[ 49.023188][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 49.023720][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 49.023720][ T72] netdev_get_by_index+0x5e/0x80 [ 49.023720][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.023720][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.023720][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.023720][ T72] ipv6_add_addr+0x411/0x2000 [ 49.023720][ T72] inet6_addr_add+0x30e/0xa40 [ 49.023720][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.023720][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.023720][ T72] netlink_rcv_skb+0x130/0x360 [ 49.023720][ T72] netlink_unicast+0x449/0x710 [ 49.023720][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.023720][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.023720][ T72] ___sys_sendmsg+0xee/0x170 [ 49.023720][ T72] __sys_sendmsg+0xcd/0x170 [ 49.023720][ T72] do_syscall_64+0xc6/0x1e0 [ 49.023720][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.023720][ T72] [ 49.026192][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 49.026192][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.026192][ T72] ipv6_find_idev+0x102/0x170 [ 49.026192][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.026192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.026192][ T72] netlink_rcv_skb+0x130/0x360 [ 49.026192][ T72] netlink_unicast+0x449/0x710 [ 49.026192][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.026192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.026192][ T72] ___sys_sendmsg+0xee/0x170 [ 49.026192][ T72] __sys_sendmsg+0xcd/0x170 [ 49.026192][ T72] do_syscall_64+0xc6/0x1e0 [ 49.026192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.026192][ T72] [ 49.027805][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 49.027805][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.027805][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.027805][ T72] ipv6_find_idev+0x102/0x170 [ 49.027805][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.027805][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.027805][ T72] netlink_rcv_skb+0x130/0x360 [ 49.027805][ T72] netlink_unicast+0x449/0x710 [ 49.027805][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.027805][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.027805][ T72] ___sys_sendmsg+0xee/0x170 [ 49.027805][ T72] __sys_sendmsg+0xcd/0x170 [ 49.027805][ T72] do_syscall_64+0xc6/0x1e0 [ 49.027805][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.027805][ T72] [ 49.029800][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 49.030108][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 49.030108][ T72] netdev_get_by_index+0x5e/0x80 [ 49.030108][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.030108][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.030108][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.030108][ T72] ipv6_add_addr+0x411/0x2000 [ 49.030108][ T72] inet6_addr_add+0x30e/0xa40 [ 49.030108][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.030108][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.030108][ T72] netlink_rcv_skb+0x130/0x360 [ 49.030108][ T72] netlink_unicast+0x449/0x710 [ 49.030108][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.030108][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.030108][ T72] ___sys_sendmsg+0xee/0x170 [ 49.030108][ T72] __sys_sendmsg+0xcd/0x170 [ 49.030108][ T72] do_syscall_64+0xc6/0x1e0 [ 49.030108][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.030108][ T72] [ 49.032446][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 49.032446][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.032446][ T72] ipv6_find_idev+0x102/0x170 [ 49.032446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.032446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.032446][ T72] netlink_rcv_skb+0x130/0x360 [ 49.032446][ T72] netlink_unicast+0x449/0x710 [ 49.032446][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.032446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.032446][ T72] ___sys_sendmsg+0xee/0x170 [ 49.032446][ T72] __sys_sendmsg+0xcd/0x170 [ 49.032446][ T72] do_syscall_64+0xc6/0x1e0 [ 49.032446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.032446][ T72] [ 49.034249][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 49.034249][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.034249][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.034249][ T72] ipv6_find_idev+0x102/0x170 [ 49.034249][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.034249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.034249][ T72] netlink_rcv_skb+0x130/0x360 [ 49.034249][ T72] netlink_unicast+0x449/0x710 [ 49.034249][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.034249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.034249][ T72] ___sys_sendmsg+0xee/0x170 [ 49.034249][ T72] __sys_sendmsg+0xcd/0x170 [ 49.034249][ T72] do_syscall_64+0xc6/0x1e0 [ 49.034249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.034249][ T72] [ 49.036186][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 49.036463][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 49.036463][ T72] netdev_get_by_index+0x5e/0x80 [ 49.036463][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.036463][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.036463][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.036463][ T72] ipv6_add_addr+0x411/0x2000 [ 49.036463][ T72] inet6_addr_add+0x30e/0xa40 [ 49.036463][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.036463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.036463][ T72] netlink_rcv_skb+0x130/0x360 [ 49.036463][ T72] netlink_unicast+0x449/0x710 [ 49.036463][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.036463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.036463][ T72] ___sys_sendmsg+0xee/0x170 [ 49.036463][ T72] __sys_sendmsg+0xcd/0x170 [ 49.036463][ T72] do_syscall_64+0xc6/0x1e0 [ 49.036463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.036463][ T72] [ 49.038666][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 49.038666][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.038666][ T72] ipv6_find_idev+0x102/0x170 [ 49.038666][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.038666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.038666][ T72] netlink_rcv_skb+0x130/0x360 [ 49.038666][ T72] netlink_unicast+0x449/0x710 [ 49.038666][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.038666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.038666][ T72] ___sys_sendmsg+0xee/0x170 [ 49.038666][ T72] __sys_sendmsg+0xcd/0x170 [ 49.038666][ T72] do_syscall_64+0xc6/0x1e0 [ 49.038666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.038666][ T72] [ 49.040321][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 49.040321][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.040321][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.040321][ T72] ipv6_find_idev+0x102/0x170 [ 49.040321][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.040321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.040321][ T72] netlink_rcv_skb+0x130/0x360 [ 49.040321][ T72] netlink_unicast+0x449/0x710 [ 49.040321][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.040321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.040321][ T72] ___sys_sendmsg+0xee/0x170 [ 49.040321][ T72] __sys_sendmsg+0xcd/0x170 [ 49.040321][ T72] do_syscall_64+0xc6/0x1e0 [ 49.040321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.040321][ T72] [ 49.042202][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 49.042628][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 49.042628][ T72] netdev_get_by_index+0x5e/0x80 [ 49.042628][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.042628][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.042628][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.042628][ T72] ipv6_add_addr+0x411/0x2000 [ 49.042628][ T72] inet6_addr_add+0x30e/0xa40 [ 49.042628][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.042628][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.042628][ T72] netlink_rcv_skb+0x130/0x360 [ 49.042628][ T72] netlink_unicast+0x449/0x710 [ 49.042628][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.042628][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.042628][ T72] ___sys_sendmsg+0xee/0x170 [ 49.042628][ T72] __sys_sendmsg+0xcd/0x170 [ 49.042628][ T72] do_syscall_64+0xc6/0x1e0 [ 49.042628][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.042628][ T72] [ 49.044767][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 49.044767][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.044767][ T72] ipv6_find_idev+0x102/0x170 [ 49.044767][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.044767][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.044767][ T72] netlink_rcv_skb+0x130/0x360 [ 49.044767][ T72] netlink_unicast+0x449/0x710 [ 49.044767][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.044767][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.044767][ T72] ___sys_sendmsg+0xee/0x170 [ 49.044767][ T72] __sys_sendmsg+0xcd/0x170 [ 49.044767][ T72] do_syscall_64+0xc6/0x1e0 [ 49.044767][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.044767][ T72] [ 49.046366][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 49.046366][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.046366][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.046366][ T72] ipv6_find_idev+0x102/0x170 [ 49.046366][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.046366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.046366][ T72] netlink_rcv_skb+0x130/0x360 [ 49.046366][ T72] netlink_unicast+0x449/0x710 [ 49.046366][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.046366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.046366][ T72] ___sys_sendmsg+0xee/0x170 [ 49.046366][ T72] __sys_sendmsg+0xcd/0x170 [ 49.046366][ T72] do_syscall_64+0xc6/0x1e0 [ 49.046366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.046366][ T72] [ 49.048159][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 49.048482][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 49.048482][ T72] netdev_get_by_index+0x5e/0x80 [ 49.048482][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.048482][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.048482][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.048482][ T72] ipv6_add_addr+0x411/0x2000 [ 49.048482][ T72] inet6_addr_add+0x30e/0xa40 [ 49.048482][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.048482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.048482][ T72] netlink_rcv_skb+0x130/0x360 [ 49.048482][ T72] netlink_unicast+0x449/0x710 [ 49.048482][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.048482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.048482][ T72] ___sys_sendmsg+0xee/0x170 [ 49.048482][ T72] __sys_sendmsg+0xcd/0x170 [ 49.048482][ T72] do_syscall_64+0xc6/0x1e0 [ 49.048482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.048482][ T72] [ 49.050537][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 49.050537][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.050537][ T72] ipv6_find_idev+0x102/0x170 [ 49.050537][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.050537][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.050537][ T72] netlink_rcv_skb+0x130/0x360 [ 49.050537][ T72] netlink_unicast+0x449/0x710 [ 49.050537][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.050537][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.050537][ T72] ___sys_sendmsg+0xee/0x170 [ 49.050537][ T72] __sys_sendmsg+0xcd/0x170 [ 49.050537][ T72] do_syscall_64+0xc6/0x1e0 [ 49.050537][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.050537][ T72] [ 49.052352][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 49.052352][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.052352][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.052352][ T72] ipv6_find_idev+0x102/0x170 [ 49.052352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.052352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.052352][ T72] netlink_rcv_skb+0x130/0x360 [ 49.052352][ T72] netlink_unicast+0x449/0x710 [ 49.052352][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.052352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.052352][ T72] ___sys_sendmsg+0xee/0x170 [ 49.052352][ T72] __sys_sendmsg+0xcd/0x170 [ 49.052352][ T72] do_syscall_64+0xc6/0x1e0 [ 49.052352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.052352][ T72] [ 49.054526][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 49.054935][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 49.054935][ T72] netdev_get_by_index+0x5e/0x80 [ 49.054935][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.054935][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.054935][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.054935][ T72] ipv6_add_addr+0x411/0x2000 [ 49.054935][ T72] inet6_addr_add+0x30e/0xa40 [ 49.054935][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.054935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.054935][ T72] netlink_rcv_skb+0x130/0x360 [ 49.054935][ T72] netlink_unicast+0x449/0x710 [ 49.054935][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.054935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.054935][ T72] ___sys_sendmsg+0xee/0x170 [ 49.054935][ T72] __sys_sendmsg+0xcd/0x170 [ 49.054935][ T72] do_syscall_64+0xc6/0x1e0 [ 49.054935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.054935][ T72] [ 49.057295][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 49.057295][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.057295][ T72] ipv6_find_idev+0x102/0x170 [ 49.057295][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.057295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.057295][ T72] netlink_rcv_skb+0x130/0x360 [ 49.057295][ T72] netlink_unicast+0x449/0x710 [ 49.057295][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.057295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.057295][ T72] ___sys_sendmsg+0xee/0x170 [ 49.057295][ T72] __sys_sendmsg+0xcd/0x170 [ 49.057295][ T72] do_syscall_64+0xc6/0x1e0 [ 49.057295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.057295][ T72] [ 49.059107][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 49.059107][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.059107][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.059107][ T72] ipv6_find_idev+0x102/0x170 [ 49.059107][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.059107][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.059107][ T72] netlink_rcv_skb+0x130/0x360 [ 49.059107][ T72] netlink_unicast+0x449/0x710 [ 49.059107][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.059107][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.059107][ T72] ___sys_sendmsg+0xee/0x170 [ 49.059107][ T72] __sys_sendmsg+0xcd/0x170 [ 49.059107][ T72] do_syscall_64+0xc6/0x1e0 [ 49.059107][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.059107][ T72] [ 49.061135][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 49.061463][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 49.061463][ T72] netdev_get_by_index+0x5e/0x80 [ 49.061463][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.061463][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.061463][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.061463][ T72] ipv6_add_addr+0x411/0x2000 [ 49.061463][ T72] inet6_addr_add+0x30e/0xa40 [ 49.061463][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.061463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.061463][ T72] netlink_rcv_skb+0x130/0x360 [ 49.061463][ T72] netlink_unicast+0x449/0x710 [ 49.061463][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.061463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.061463][ T72] ___sys_sendmsg+0xee/0x170 [ 49.061463][ T72] __sys_sendmsg+0xcd/0x170 [ 49.061463][ T72] do_syscall_64+0xc6/0x1e0 [ 49.061463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.061463][ T72] [ 49.063526][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 49.063526][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.063526][ T72] ipv6_find_idev+0x102/0x170 [ 49.063526][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.063526][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.063526][ T72] netlink_rcv_skb+0x130/0x360 [ 49.063526][ T72] netlink_unicast+0x449/0x710 [ 49.063526][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.063526][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.063526][ T72] ___sys_sendmsg+0xee/0x170 [ 49.063526][ T72] __sys_sendmsg+0xcd/0x170 [ 49.063526][ T72] do_syscall_64+0xc6/0x1e0 [ 49.063526][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.063526][ T72] [ 49.065109][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 49.065109][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.065109][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.065109][ T72] ipv6_find_idev+0x102/0x170 [ 49.065109][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.065109][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.065109][ T72] netlink_rcv_skb+0x130/0x360 [ 49.065109][ T72] netlink_unicast+0x449/0x710 [ 49.065109][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.065109][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.065109][ T72] ___sys_sendmsg+0xee/0x170 [ 49.065109][ T72] __sys_sendmsg+0xcd/0x170 [ 49.065109][ T72] do_syscall_64+0xc6/0x1e0 [ 49.065109][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.065109][ T72] [ 49.067036][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 49.067364][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 49.067364][ T72] netdev_get_by_index+0x5e/0x80 [ 49.067364][ T72] fib6_nh_init+0x3d8/0x15b0 [ 49.067364][ T72] ip6_route_info_create+0xf18/0x17d0 [ 49.067364][ T72] addrconf_f6i_alloc+0x244/0x410 [ 49.067364][ T72] ipv6_add_addr+0x411/0x2000 [ 49.067364][ T72] inet6_addr_add+0x30e/0xa40 [ 49.067364][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 49.067364][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.067364][ T72] netlink_rcv_skb+0x130/0x360 [ 49.067364][ T72] netlink_unicast+0x449/0x710 [ 49.067364][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.067364][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.067364][ T72] ___sys_sendmsg+0xee/0x170 [ 49.067364][ T72] __sys_sendmsg+0xcd/0x170 [ 49.067364][ T72] do_syscall_64+0xc6/0x1e0 [ 49.067364][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.067364][ T72] [ 49.069646][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 49.069646][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 49.069646][ T72] ipv6_find_idev+0x102/0x170 [ 49.069646][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.069646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.069646][ T72] netlink_rcv_skb+0x130/0x360 [ 49.069646][ T72] netlink_unicast+0x449/0x710 [ 49.069646][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.069646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.069646][ T72] ___sys_sendmsg+0xee/0x170 [ 49.069646][ T72] __sys_sendmsg+0xcd/0x170 [ 49.069646][ T72] do_syscall_64+0xc6/0x1e0 [ 49.069646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.069646][ T72] [ 49.071456][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 49.071456][ T72] neigh_parms_alloc+0x1e5/0x510 [ 49.071456][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 49.071456][ T72] ipv6_find_idev+0x102/0x170 [ 49.071456][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 49.071456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 49.071456][ T72] netlink_rcv_skb+0x130/0x360 [ 49.071456][ T72] netlink_unicast+0x449/0x710 [ 49.071456][ T72] netlink_sendmsg+0x723/0xbe0 [ 49.071456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 49.071456][ T72] ___sys_sendmsg+0xee/0x170 [ 49.071456][ T72] __sys_sendmsg+0xcd/0x170 [ 49.071456][ T72] do_syscall_64+0xc6/0x1e0 [ 49.071456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 49.071456][ T72] [ 59.199761][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 59.200117][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 59.200117][ T72] netdev_get_by_index+0x5e/0x80 [ 59.200117][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.200117][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.200117][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.200117][ T72] ipv6_add_addr+0x411/0x2000 [ 59.200117][ T72] inet6_addr_add+0x30e/0xa40 [ 59.200117][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.200117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.200117][ T72] netlink_rcv_skb+0x130/0x360 [ 59.200117][ T72] netlink_unicast+0x449/0x710 [ 59.200117][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.200117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.200117][ T72] ___sys_sendmsg+0xee/0x170 [ 59.200117][ T72] __sys_sendmsg+0xcd/0x170 [ 59.200117][ T72] do_syscall_64+0xc6/0x1e0 [ 59.200117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.200117][ T72] [ 59.202258][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 59.202258][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.202258][ T72] ipv6_find_idev+0x102/0x170 [ 59.202258][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.202258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.202258][ T72] netlink_rcv_skb+0x130/0x360 [ 59.202258][ T72] netlink_unicast+0x449/0x710 [ 59.202258][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.202258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.202258][ T72] ___sys_sendmsg+0xee/0x170 [ 59.202258][ T72] __sys_sendmsg+0xcd/0x170 [ 59.202258][ T72] do_syscall_64+0xc6/0x1e0 [ 59.202258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.202258][ T72] [ 59.203821][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 59.203821][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.203821][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.203821][ T72] ipv6_find_idev+0x102/0x170 [ 59.203821][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.203821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.203821][ T72] netlink_rcv_skb+0x130/0x360 [ 59.203821][ T72] netlink_unicast+0x449/0x710 [ 59.203821][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.203821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.203821][ T72] ___sys_sendmsg+0xee/0x170 [ 59.203821][ T72] __sys_sendmsg+0xcd/0x170 [ 59.203821][ T72] do_syscall_64+0xc6/0x1e0 [ 59.203821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.203821][ T72] [ 59.205552][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 59.205914][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 59.205914][ T72] netdev_get_by_index+0x5e/0x80 [ 59.205914][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.205914][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.205914][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.205914][ T72] ipv6_add_addr+0x411/0x2000 [ 59.205914][ T72] inet6_addr_add+0x30e/0xa40 [ 59.205914][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.205914][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.205914][ T72] netlink_rcv_skb+0x130/0x360 [ 59.205914][ T72] netlink_unicast+0x449/0x710 [ 59.205914][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.205914][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.205914][ T72] ___sys_sendmsg+0xee/0x170 [ 59.205914][ T72] __sys_sendmsg+0xcd/0x170 [ 59.205914][ T72] do_syscall_64+0xc6/0x1e0 [ 59.205914][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.205914][ T72] [ 59.207956][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 59.207956][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.207956][ T72] ipv6_find_idev+0x102/0x170 [ 59.207956][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.207956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.207956][ T72] netlink_rcv_skb+0x130/0x360 [ 59.207956][ T72] netlink_unicast+0x449/0x710 [ 59.207956][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.207956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.207956][ T72] ___sys_sendmsg+0xee/0x170 [ 59.207956][ T72] __sys_sendmsg+0xcd/0x170 [ 59.207956][ T72] do_syscall_64+0xc6/0x1e0 [ 59.207956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.207956][ T72] [ 59.209529][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 59.209529][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.209529][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.209529][ T72] ipv6_find_idev+0x102/0x170 [ 59.209529][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.209529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.209529][ T72] netlink_rcv_skb+0x130/0x360 [ 59.209529][ T72] netlink_unicast+0x449/0x710 [ 59.209529][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.209529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.209529][ T72] ___sys_sendmsg+0xee/0x170 [ 59.209529][ T72] __sys_sendmsg+0xcd/0x170 [ 59.209529][ T72] do_syscall_64+0xc6/0x1e0 [ 59.209529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.209529][ T72] [ 59.211270][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 59.211545][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 59.211545][ T72] netdev_get_by_index+0x5e/0x80 [ 59.211545][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.211545][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.211545][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.211545][ T72] ipv6_add_addr+0x411/0x2000 [ 59.211545][ T72] inet6_addr_add+0x30e/0xa40 [ 59.211545][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.211545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.211545][ T72] netlink_rcv_skb+0x130/0x360 [ 59.211545][ T72] netlink_unicast+0x449/0x710 [ 59.211545][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.211545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.211545][ T72] ___sys_sendmsg+0xee/0x170 [ 59.211545][ T72] __sys_sendmsg+0xcd/0x170 [ 59.211545][ T72] do_syscall_64+0xc6/0x1e0 [ 59.211545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.211545][ T72] [ 59.213599][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 59.213599][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.213599][ T72] ipv6_find_idev+0x102/0x170 [ 59.213599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.213599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.213599][ T72] netlink_rcv_skb+0x130/0x360 [ 59.213599][ T72] netlink_unicast+0x449/0x710 [ 59.213599][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.213599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.213599][ T72] ___sys_sendmsg+0xee/0x170 [ 59.213599][ T72] __sys_sendmsg+0xcd/0x170 [ 59.213599][ T72] do_syscall_64+0xc6/0x1e0 [ 59.213599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.213599][ T72] [ 59.215177][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 59.215177][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.215177][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.215177][ T72] ipv6_find_idev+0x102/0x170 [ 59.215177][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.215177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.215177][ T72] netlink_rcv_skb+0x130/0x360 [ 59.215177][ T72] netlink_unicast+0x449/0x710 [ 59.215177][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.215177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.215177][ T72] ___sys_sendmsg+0xee/0x170 [ 59.215177][ T72] __sys_sendmsg+0xcd/0x170 [ 59.215177][ T72] do_syscall_64+0xc6/0x1e0 [ 59.215177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.215177][ T72] [ 59.216914][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 59.217193][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 59.217193][ T72] netdev_get_by_index+0x5e/0x80 [ 59.217193][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.217193][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.217193][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.217193][ T72] ipv6_add_addr+0x411/0x2000 [ 59.217193][ T72] inet6_addr_add+0x30e/0xa40 [ 59.217193][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.217193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.217193][ T72] netlink_rcv_skb+0x130/0x360 [ 59.217193][ T72] netlink_unicast+0x449/0x710 [ 59.217193][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.217193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.217193][ T72] ___sys_sendmsg+0xee/0x170 [ 59.217193][ T72] __sys_sendmsg+0xcd/0x170 [ 59.217193][ T72] do_syscall_64+0xc6/0x1e0 [ 59.217193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.217193][ T72] [ 59.219240][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 59.219240][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.219240][ T72] ipv6_find_idev+0x102/0x170 [ 59.219240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.219240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.219240][ T72] netlink_rcv_skb+0x130/0x360 [ 59.219240][ T72] netlink_unicast+0x449/0x710 [ 59.219240][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.219240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.219240][ T72] ___sys_sendmsg+0xee/0x170 [ 59.219240][ T72] __sys_sendmsg+0xcd/0x170 [ 59.219240][ T72] do_syscall_64+0xc6/0x1e0 [ 59.219240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.219240][ T72] [ 59.220961][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 59.220961][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.220961][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.220961][ T72] ipv6_find_idev+0x102/0x170 [ 59.220961][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.220961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.220961][ T72] netlink_rcv_skb+0x130/0x360 [ 59.220961][ T72] netlink_unicast+0x449/0x710 [ 59.220961][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.220961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.220961][ T72] ___sys_sendmsg+0xee/0x170 [ 59.220961][ T72] __sys_sendmsg+0xcd/0x170 [ 59.220961][ T72] do_syscall_64+0xc6/0x1e0 [ 59.220961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.220961][ T72] [ 59.222893][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 59.223583][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 59.223583][ T72] netdev_get_by_index+0x5e/0x80 [ 59.223583][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.223583][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.223583][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.223583][ T72] ipv6_add_addr+0x411/0x2000 [ 59.223583][ T72] inet6_addr_add+0x30e/0xa40 [ 59.223583][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.223583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.223583][ T72] netlink_rcv_skb+0x130/0x360 [ 59.223583][ T72] netlink_unicast+0x449/0x710 [ 59.223583][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.223583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.223583][ T72] ___sys_sendmsg+0xee/0x170 [ 59.223583][ T72] __sys_sendmsg+0xcd/0x170 [ 59.223583][ T72] do_syscall_64+0xc6/0x1e0 [ 59.223583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.223583][ T72] [ 59.225917][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 59.225917][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.225917][ T72] ipv6_find_idev+0x102/0x170 [ 59.225917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.225917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.225917][ T72] netlink_rcv_skb+0x130/0x360 [ 59.225917][ T72] netlink_unicast+0x449/0x710 [ 59.225917][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.225917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.225917][ T72] ___sys_sendmsg+0xee/0x170 [ 59.225917][ T72] __sys_sendmsg+0xcd/0x170 [ 59.225917][ T72] do_syscall_64+0xc6/0x1e0 [ 59.225917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.225917][ T72] [ 59.227615][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 59.227615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.227615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.227615][ T72] ipv6_find_idev+0x102/0x170 [ 59.227615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.227615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.227615][ T72] netlink_rcv_skb+0x130/0x360 [ 59.227615][ T72] netlink_unicast+0x449/0x710 [ 59.227615][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.227615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.227615][ T72] ___sys_sendmsg+0xee/0x170 [ 59.227615][ T72] __sys_sendmsg+0xcd/0x170 [ 59.227615][ T72] do_syscall_64+0xc6/0x1e0 [ 59.227615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.227615][ T72] [ 59.229474][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 59.229753][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 59.229753][ T72] netdev_get_by_index+0x5e/0x80 [ 59.229753][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.229753][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.229753][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.229753][ T72] ipv6_add_addr+0x411/0x2000 [ 59.229753][ T72] inet6_addr_add+0x30e/0xa40 [ 59.229753][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.229753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.229753][ T72] netlink_rcv_skb+0x130/0x360 [ 59.229753][ T72] netlink_unicast+0x449/0x710 [ 59.229753][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.229753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.229753][ T72] ___sys_sendmsg+0xee/0x170 [ 59.229753][ T72] __sys_sendmsg+0xcd/0x170 [ 59.229753][ T72] do_syscall_64+0xc6/0x1e0 [ 59.229753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.229753][ T72] [ 59.231806][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 59.231806][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.231806][ T72] ipv6_find_idev+0x102/0x170 [ 59.231806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.231806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.231806][ T72] netlink_rcv_skb+0x130/0x360 [ 59.231806][ T72] netlink_unicast+0x449/0x710 [ 59.231806][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.231806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.231806][ T72] ___sys_sendmsg+0xee/0x170 [ 59.231806][ T72] __sys_sendmsg+0xcd/0x170 [ 59.231806][ T72] do_syscall_64+0xc6/0x1e0 [ 59.231806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.231806][ T72] [ 59.233365][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 59.233365][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.233365][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.233365][ T72] ipv6_find_idev+0x102/0x170 [ 59.233365][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.233365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.233365][ T72] netlink_rcv_skb+0x130/0x360 [ 59.233365][ T72] netlink_unicast+0x449/0x710 [ 59.233365][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.233365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.233365][ T72] ___sys_sendmsg+0xee/0x170 [ 59.233365][ T72] __sys_sendmsg+0xcd/0x170 [ 59.233365][ T72] do_syscall_64+0xc6/0x1e0 [ 59.233365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.233365][ T72] [ 59.235132][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 59.235468][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 59.235468][ T72] netdev_get_by_index+0x5e/0x80 [ 59.235468][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.235468][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.235468][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.235468][ T72] ipv6_add_addr+0x411/0x2000 [ 59.235468][ T72] inet6_addr_add+0x30e/0xa40 [ 59.235468][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.235468][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.235468][ T72] netlink_rcv_skb+0x130/0x360 [ 59.235468][ T72] netlink_unicast+0x449/0x710 [ 59.235468][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.235468][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.235468][ T72] ___sys_sendmsg+0xee/0x170 [ 59.235468][ T72] __sys_sendmsg+0xcd/0x170 [ 59.235468][ T72] do_syscall_64+0xc6/0x1e0 [ 59.235468][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.235468][ T72] [ 59.237618][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 59.237618][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.237618][ T72] ipv6_find_idev+0x102/0x170 [ 59.237618][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.237618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.237618][ T72] netlink_rcv_skb+0x130/0x360 [ 59.237618][ T72] netlink_unicast+0x449/0x710 [ 59.237618][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.237618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.237618][ T72] ___sys_sendmsg+0xee/0x170 [ 59.237618][ T72] __sys_sendmsg+0xcd/0x170 [ 59.237618][ T72] do_syscall_64+0xc6/0x1e0 [ 59.237618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.237618][ T72] [ 59.239357][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 59.239357][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.239357][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.239357][ T72] ipv6_find_idev+0x102/0x170 [ 59.239357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.239357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.239357][ T72] netlink_rcv_skb+0x130/0x360 [ 59.239357][ T72] netlink_unicast+0x449/0x710 [ 59.239357][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.239357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.239357][ T72] ___sys_sendmsg+0xee/0x170 [ 59.239357][ T72] __sys_sendmsg+0xcd/0x170 [ 59.239357][ T72] do_syscall_64+0xc6/0x1e0 [ 59.239357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.239357][ T72] [ 59.241345][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 59.241689][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 59.241689][ T72] netdev_get_by_index+0x5e/0x80 [ 59.241689][ T72] fib6_nh_init+0x3d8/0x15b0 [ 59.241689][ T72] ip6_route_info_create+0xf18/0x17d0 [ 59.241689][ T72] addrconf_f6i_alloc+0x244/0x410 [ 59.241689][ T72] ipv6_add_addr+0x411/0x2000 [ 59.241689][ T72] inet6_addr_add+0x30e/0xa40 [ 59.241689][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 59.241689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.241689][ T72] netlink_rcv_skb+0x130/0x360 [ 59.241689][ T72] netlink_unicast+0x449/0x710 [ 59.241689][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.241689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.241689][ T72] ___sys_sendmsg+0xee/0x170 [ 59.241689][ T72] __sys_sendmsg+0xcd/0x170 [ 59.241689][ T72] do_syscall_64+0xc6/0x1e0 [ 59.241689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.241689][ T72] [ 59.243904][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 59.243904][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 59.243904][ T72] ipv6_find_idev+0x102/0x170 [ 59.243904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.243904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.243904][ T72] netlink_rcv_skb+0x130/0x360 [ 59.243904][ T72] netlink_unicast+0x449/0x710 [ 59.243904][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.243904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.243904][ T72] ___sys_sendmsg+0xee/0x170 [ 59.243904][ T72] __sys_sendmsg+0xcd/0x170 [ 59.243904][ T72] do_syscall_64+0xc6/0x1e0 [ 59.243904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.243904][ T72] [ 59.245607][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 59.245607][ T72] neigh_parms_alloc+0x1e5/0x510 [ 59.245607][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 59.245607][ T72] ipv6_find_idev+0x102/0x170 [ 59.245607][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 59.245607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 59.245607][ T72] netlink_rcv_skb+0x130/0x360 [ 59.245607][ T72] netlink_unicast+0x449/0x710 [ 59.245607][ T72] netlink_sendmsg+0x723/0xbe0 [ 59.245607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 59.245607][ T72] ___sys_sendmsg+0xee/0x170 [ 59.245607][ T72] __sys_sendmsg+0xcd/0x170 [ 59.245607][ T72] do_syscall_64+0xc6/0x1e0 [ 59.245607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 59.245607][ T72] [ 69.390803][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 69.391201][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 69.391201][ T72] netdev_get_by_index+0x5e/0x80 [ 69.391201][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.391201][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.391201][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.391201][ T72] ipv6_add_addr+0x411/0x2000 [ 69.391201][ T72] inet6_addr_add+0x30e/0xa40 [ 69.391201][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.391201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.391201][ T72] netlink_rcv_skb+0x130/0x360 [ 69.391201][ T72] netlink_unicast+0x449/0x710 [ 69.391201][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.391201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.391201][ T72] ___sys_sendmsg+0xee/0x170 [ 69.391201][ T72] __sys_sendmsg+0xcd/0x170 [ 69.391201][ T72] do_syscall_64+0xc6/0x1e0 [ 69.391201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.391201][ T72] [ 69.393411][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 69.393411][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.393411][ T72] ipv6_find_idev+0x102/0x170 [ 69.393411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.393411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.393411][ T72] netlink_rcv_skb+0x130/0x360 [ 69.393411][ T72] netlink_unicast+0x449/0x710 [ 69.393411][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.393411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.393411][ T72] ___sys_sendmsg+0xee/0x170 [ 69.393411][ T72] __sys_sendmsg+0xcd/0x170 [ 69.393411][ T72] do_syscall_64+0xc6/0x1e0 [ 69.393411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.393411][ T72] [ 69.395042][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 69.395042][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.395042][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.395042][ T72] ipv6_find_idev+0x102/0x170 [ 69.395042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.395042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.395042][ T72] netlink_rcv_skb+0x130/0x360 [ 69.395042][ T72] netlink_unicast+0x449/0x710 [ 69.395042][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.395042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.395042][ T72] ___sys_sendmsg+0xee/0x170 [ 69.395042][ T72] __sys_sendmsg+0xcd/0x170 [ 69.395042][ T72] do_syscall_64+0xc6/0x1e0 [ 69.395042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.395042][ T72] [ 69.396777][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 69.397070][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 69.397070][ T72] netdev_get_by_index+0x5e/0x80 [ 69.397070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.397070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.397070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.397070][ T72] ipv6_add_addr+0x411/0x2000 [ 69.397070][ T72] inet6_addr_add+0x30e/0xa40 [ 69.397070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.397070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.397070][ T72] netlink_rcv_skb+0x130/0x360 [ 69.397070][ T72] netlink_unicast+0x449/0x710 [ 69.397070][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.397070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.397070][ T72] ___sys_sendmsg+0xee/0x170 [ 69.397070][ T72] __sys_sendmsg+0xcd/0x170 [ 69.397070][ T72] do_syscall_64+0xc6/0x1e0 [ 69.397070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.397070][ T72] [ 69.399103][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 69.399103][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.399103][ T72] ipv6_find_idev+0x102/0x170 [ 69.399103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.399103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.399103][ T72] netlink_rcv_skb+0x130/0x360 [ 69.399103][ T72] netlink_unicast+0x449/0x710 [ 69.399103][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.399103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.399103][ T72] ___sys_sendmsg+0xee/0x170 [ 69.399103][ T72] __sys_sendmsg+0xcd/0x170 [ 69.399103][ T72] do_syscall_64+0xc6/0x1e0 [ 69.399103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.399103][ T72] [ 69.400865][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 69.400865][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.400865][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.400865][ T72] ipv6_find_idev+0x102/0x170 [ 69.400865][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.400865][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.400865][ T72] netlink_rcv_skb+0x130/0x360 [ 69.400865][ T72] netlink_unicast+0x449/0x710 [ 69.400865][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.400865][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.400865][ T72] ___sys_sendmsg+0xee/0x170 [ 69.400865][ T72] __sys_sendmsg+0xcd/0x170 [ 69.400865][ T72] do_syscall_64+0xc6/0x1e0 [ 69.400865][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.400865][ T72] [ 69.402777][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 69.403061][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 69.403061][ T72] netdev_get_by_index+0x5e/0x80 [ 69.403061][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.403061][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.403061][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.403061][ T72] ipv6_add_addr+0x411/0x2000 [ 69.403061][ T72] inet6_addr_add+0x30e/0xa40 [ 69.403061][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.403061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.403061][ T72] netlink_rcv_skb+0x130/0x360 [ 69.403061][ T72] netlink_unicast+0x449/0x710 [ 69.403061][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.403061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.403061][ T72] ___sys_sendmsg+0xee/0x170 [ 69.403061][ T72] __sys_sendmsg+0xcd/0x170 [ 69.403061][ T72] do_syscall_64+0xc6/0x1e0 [ 69.403061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.403061][ T72] [ 69.405368][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 69.405368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.405368][ T72] ipv6_find_idev+0x102/0x170 [ 69.405368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.405368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.405368][ T72] netlink_rcv_skb+0x130/0x360 [ 69.405368][ T72] netlink_unicast+0x449/0x710 [ 69.405368][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.405368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.405368][ T72] ___sys_sendmsg+0xee/0x170 [ 69.405368][ T72] __sys_sendmsg+0xcd/0x170 [ 69.405368][ T72] do_syscall_64+0xc6/0x1e0 [ 69.405368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.405368][ T72] [ 69.407125][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 69.407125][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.407125][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.407125][ T72] ipv6_find_idev+0x102/0x170 [ 69.407125][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.407125][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.407125][ T72] netlink_rcv_skb+0x130/0x360 [ 69.407125][ T72] netlink_unicast+0x449/0x710 [ 69.407125][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.407125][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.407125][ T72] ___sys_sendmsg+0xee/0x170 [ 69.407125][ T72] __sys_sendmsg+0xcd/0x170 [ 69.407125][ T72] do_syscall_64+0xc6/0x1e0 [ 69.407125][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.407125][ T72] [ 69.409123][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 69.409481][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 69.409481][ T72] netdev_get_by_index+0x5e/0x80 [ 69.409481][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.409481][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.409481][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.409481][ T72] ipv6_add_addr+0x411/0x2000 [ 69.409481][ T72] inet6_addr_add+0x30e/0xa40 [ 69.409481][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.409481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.409481][ T72] netlink_rcv_skb+0x130/0x360 [ 69.409481][ T72] netlink_unicast+0x449/0x710 [ 69.409481][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.409481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.409481][ T72] ___sys_sendmsg+0xee/0x170 [ 69.409481][ T72] __sys_sendmsg+0xcd/0x170 [ 69.409481][ T72] do_syscall_64+0xc6/0x1e0 [ 69.409481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.409481][ T72] [ 69.411561][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 69.411561][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.411561][ T72] ipv6_find_idev+0x102/0x170 [ 69.411561][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.411561][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.411561][ T72] netlink_rcv_skb+0x130/0x360 [ 69.411561][ T72] netlink_unicast+0x449/0x710 [ 69.411561][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.411561][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.411561][ T72] ___sys_sendmsg+0xee/0x170 [ 69.411561][ T72] __sys_sendmsg+0xcd/0x170 [ 69.411561][ T72] do_syscall_64+0xc6/0x1e0 [ 69.411561][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.411561][ T72] [ 69.413168][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 69.413168][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.413168][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.413168][ T72] ipv6_find_idev+0x102/0x170 [ 69.413168][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.413168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.413168][ T72] netlink_rcv_skb+0x130/0x360 [ 69.413168][ T72] netlink_unicast+0x449/0x710 [ 69.413168][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.413168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.413168][ T72] ___sys_sendmsg+0xee/0x170 [ 69.413168][ T72] __sys_sendmsg+0xcd/0x170 [ 69.413168][ T72] do_syscall_64+0xc6/0x1e0 [ 69.413168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.413168][ T72] [ 69.415176][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 69.415535][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 69.415535][ T72] netdev_get_by_index+0x5e/0x80 [ 69.415535][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.415535][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.415535][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.415535][ T72] ipv6_add_addr+0x411/0x2000 [ 69.415535][ T72] inet6_addr_add+0x30e/0xa40 [ 69.415535][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.415535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.415535][ T72] netlink_rcv_skb+0x130/0x360 [ 69.415535][ T72] netlink_unicast+0x449/0x710 [ 69.415535][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.415535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.415535][ T72] ___sys_sendmsg+0xee/0x170 [ 69.415535][ T72] __sys_sendmsg+0xcd/0x170 [ 69.415535][ T72] do_syscall_64+0xc6/0x1e0 [ 69.415535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.415535][ T72] [ 69.417987][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 69.417987][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.417987][ T72] ipv6_find_idev+0x102/0x170 [ 69.417987][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.417987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.417987][ T72] netlink_rcv_skb+0x130/0x360 [ 69.417987][ T72] netlink_unicast+0x449/0x710 [ 69.417987][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.417987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.417987][ T72] ___sys_sendmsg+0xee/0x170 [ 69.417987][ T72] __sys_sendmsg+0xcd/0x170 [ 69.417987][ T72] do_syscall_64+0xc6/0x1e0 [ 69.417987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.417987][ T72] [ 69.419716][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 69.419716][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.419716][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.419716][ T72] ipv6_find_idev+0x102/0x170 [ 69.419716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.419716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.419716][ T72] netlink_rcv_skb+0x130/0x360 [ 69.419716][ T72] netlink_unicast+0x449/0x710 [ 69.419716][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.419716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.419716][ T72] ___sys_sendmsg+0xee/0x170 [ 69.419716][ T72] __sys_sendmsg+0xcd/0x170 [ 69.419716][ T72] do_syscall_64+0xc6/0x1e0 [ 69.419716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.419716][ T72] [ 69.421721][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 69.422150][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 69.422150][ T72] netdev_get_by_index+0x5e/0x80 [ 69.422150][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.422150][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.422150][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.422150][ T72] ipv6_add_addr+0x411/0x2000 [ 69.422150][ T72] inet6_addr_add+0x30e/0xa40 [ 69.422150][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.422150][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.422150][ T72] netlink_rcv_skb+0x130/0x360 [ 69.422150][ T72] netlink_unicast+0x449/0x710 [ 69.422150][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.422150][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.422150][ T72] ___sys_sendmsg+0xee/0x170 [ 69.422150][ T72] __sys_sendmsg+0xcd/0x170 [ 69.422150][ T72] do_syscall_64+0xc6/0x1e0 [ 69.422150][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.422150][ T72] [ 69.424338][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 69.424338][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.424338][ T72] ipv6_find_idev+0x102/0x170 [ 69.424338][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.424338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.424338][ T72] netlink_rcv_skb+0x130/0x360 [ 69.424338][ T72] netlink_unicast+0x449/0x710 [ 69.424338][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.424338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.424338][ T72] ___sys_sendmsg+0xee/0x170 [ 69.424338][ T72] __sys_sendmsg+0xcd/0x170 [ 69.424338][ T72] do_syscall_64+0xc6/0x1e0 [ 69.424338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.424338][ T72] [ 69.426033][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 69.426033][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.426033][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.426033][ T72] ipv6_find_idev+0x102/0x170 [ 69.426033][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.426033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.426033][ T72] netlink_rcv_skb+0x130/0x360 [ 69.426033][ T72] netlink_unicast+0x449/0x710 [ 69.426033][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.426033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.426033][ T72] ___sys_sendmsg+0xee/0x170 [ 69.426033][ T72] __sys_sendmsg+0xcd/0x170 [ 69.426033][ T72] do_syscall_64+0xc6/0x1e0 [ 69.426033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.426033][ T72] [ 69.428717][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 69.429057][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 69.429057][ T72] netdev_get_by_index+0x5e/0x80 [ 69.429057][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.429057][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.429057][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.429057][ T72] ipv6_add_addr+0x411/0x2000 [ 69.429057][ T72] inet6_addr_add+0x30e/0xa40 [ 69.429057][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.429057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.429057][ T72] netlink_rcv_skb+0x130/0x360 [ 69.429057][ T72] netlink_unicast+0x449/0x710 [ 69.429057][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.429057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.429057][ T72] ___sys_sendmsg+0xee/0x170 [ 69.429057][ T72] __sys_sendmsg+0xcd/0x170 [ 69.429057][ T72] do_syscall_64+0xc6/0x1e0 [ 69.429057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.429057][ T72] [ 69.431533][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 69.431533][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.431533][ T72] ipv6_find_idev+0x102/0x170 [ 69.431533][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.431533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.431533][ T72] netlink_rcv_skb+0x130/0x360 [ 69.431533][ T72] netlink_unicast+0x449/0x710 [ 69.431533][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.431533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.431533][ T72] ___sys_sendmsg+0xee/0x170 [ 69.431533][ T72] __sys_sendmsg+0xcd/0x170 [ 69.431533][ T72] do_syscall_64+0xc6/0x1e0 [ 69.431533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.431533][ T72] [ 69.433223][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 69.433223][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.433223][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.433223][ T72] ipv6_find_idev+0x102/0x170 [ 69.433223][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.433223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.433223][ T72] netlink_rcv_skb+0x130/0x360 [ 69.433223][ T72] netlink_unicast+0x449/0x710 [ 69.433223][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.433223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.433223][ T72] ___sys_sendmsg+0xee/0x170 [ 69.433223][ T72] __sys_sendmsg+0xcd/0x170 [ 69.433223][ T72] do_syscall_64+0xc6/0x1e0 [ 69.433223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.433223][ T72] [ 69.435257][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 69.435536][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 69.435536][ T72] netdev_get_by_index+0x5e/0x80 [ 69.435536][ T72] fib6_nh_init+0x3d8/0x15b0 [ 69.435536][ T72] ip6_route_info_create+0xf18/0x17d0 [ 69.435536][ T72] addrconf_f6i_alloc+0x244/0x410 [ 69.435536][ T72] ipv6_add_addr+0x411/0x2000 [ 69.435536][ T72] inet6_addr_add+0x30e/0xa40 [ 69.435536][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 69.435536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.435536][ T72] netlink_rcv_skb+0x130/0x360 [ 69.435536][ T72] netlink_unicast+0x449/0x710 [ 69.435536][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.435536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.435536][ T72] ___sys_sendmsg+0xee/0x170 [ 69.435536][ T72] __sys_sendmsg+0xcd/0x170 [ 69.435536][ T72] do_syscall_64+0xc6/0x1e0 [ 69.435536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.435536][ T72] [ 69.437572][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 69.437572][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 69.437572][ T72] ipv6_find_idev+0x102/0x170 [ 69.437572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.437572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.437572][ T72] netlink_rcv_skb+0x130/0x360 [ 69.437572][ T72] netlink_unicast+0x449/0x710 [ 69.437572][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.437572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.437572][ T72] ___sys_sendmsg+0xee/0x170 [ 69.437572][ T72] __sys_sendmsg+0xcd/0x170 [ 69.437572][ T72] do_syscall_64+0xc6/0x1e0 [ 69.437572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.437572][ T72] [ 69.439153][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 69.439153][ T72] neigh_parms_alloc+0x1e5/0x510 [ 69.439153][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 69.439153][ T72] ipv6_find_idev+0x102/0x170 [ 69.439153][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 69.439153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 69.439153][ T72] netlink_rcv_skb+0x130/0x360 [ 69.439153][ T72] netlink_unicast+0x449/0x710 [ 69.439153][ T72] netlink_sendmsg+0x723/0xbe0 [ 69.439153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 69.439153][ T72] ___sys_sendmsg+0xee/0x170 [ 69.439153][ T72] __sys_sendmsg+0xcd/0x170 [ 69.439153][ T72] do_syscall_64+0xc6/0x1e0 [ 69.439153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 69.439153][ T72] [ 79.558786][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 79.559152][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 79.559152][ T72] netdev_get_by_index+0x5e/0x80 [ 79.559152][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.559152][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.559152][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.559152][ T72] ipv6_add_addr+0x411/0x2000 [ 79.559152][ T72] inet6_addr_add+0x30e/0xa40 [ 79.559152][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.559152][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.559152][ T72] netlink_rcv_skb+0x130/0x360 [ 79.559152][ T72] netlink_unicast+0x449/0x710 [ 79.559152][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.559152][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.559152][ T72] ___sys_sendmsg+0xee/0x170 [ 79.559152][ T72] __sys_sendmsg+0xcd/0x170 [ 79.559152][ T72] do_syscall_64+0xc6/0x1e0 [ 79.559152][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.559152][ T72] [ 79.561252][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 79.561252][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.561252][ T72] ipv6_find_idev+0x102/0x170 [ 79.561252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.561252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.561252][ T72] netlink_rcv_skb+0x130/0x360 [ 79.561252][ T72] netlink_unicast+0x449/0x710 [ 79.561252][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.561252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.561252][ T72] ___sys_sendmsg+0xee/0x170 [ 79.561252][ T72] __sys_sendmsg+0xcd/0x170 [ 79.561252][ T72] do_syscall_64+0xc6/0x1e0 [ 79.561252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.561252][ T72] [ 79.562823][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 79.562823][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.562823][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.562823][ T72] ipv6_find_idev+0x102/0x170 [ 79.562823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.562823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.562823][ T72] netlink_rcv_skb+0x130/0x360 [ 79.562823][ T72] netlink_unicast+0x449/0x710 [ 79.562823][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.562823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.562823][ T72] ___sys_sendmsg+0xee/0x170 [ 79.562823][ T72] __sys_sendmsg+0xcd/0x170 [ 79.562823][ T72] do_syscall_64+0xc6/0x1e0 [ 79.562823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.562823][ T72] [ 79.564585][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 79.564873][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 79.564873][ T72] netdev_get_by_index+0x5e/0x80 [ 79.564873][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.564873][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.564873][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.564873][ T72] ipv6_add_addr+0x411/0x2000 [ 79.564873][ T72] inet6_addr_add+0x30e/0xa40 [ 79.564873][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.564873][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.564873][ T72] netlink_rcv_skb+0x130/0x360 [ 79.564873][ T72] netlink_unicast+0x449/0x710 [ 79.564873][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.564873][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.564873][ T72] ___sys_sendmsg+0xee/0x170 [ 79.564873][ T72] __sys_sendmsg+0xcd/0x170 [ 79.564873][ T72] do_syscall_64+0xc6/0x1e0 [ 79.564873][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.564873][ T72] [ 79.566930][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 79.566930][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.566930][ T72] ipv6_find_idev+0x102/0x170 [ 79.566930][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.566930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.566930][ T72] netlink_rcv_skb+0x130/0x360 [ 79.566930][ T72] netlink_unicast+0x449/0x710 [ 79.566930][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.566930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.566930][ T72] ___sys_sendmsg+0xee/0x170 [ 79.566930][ T72] __sys_sendmsg+0xcd/0x170 [ 79.566930][ T72] do_syscall_64+0xc6/0x1e0 [ 79.566930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.566930][ T72] [ 79.568504][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 79.568504][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.568504][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.568504][ T72] ipv6_find_idev+0x102/0x170 [ 79.568504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.568504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.568504][ T72] netlink_rcv_skb+0x130/0x360 [ 79.568504][ T72] netlink_unicast+0x449/0x710 [ 79.568504][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.568504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.568504][ T72] ___sys_sendmsg+0xee/0x170 [ 79.568504][ T72] __sys_sendmsg+0xcd/0x170 [ 79.568504][ T72] do_syscall_64+0xc6/0x1e0 [ 79.568504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.568504][ T72] [ 79.570217][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 79.570487][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 79.570487][ T72] netdev_get_by_index+0x5e/0x80 [ 79.570487][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.570487][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.570487][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.570487][ T72] ipv6_add_addr+0x411/0x2000 [ 79.570487][ T72] inet6_addr_add+0x30e/0xa40 [ 79.570487][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.570487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.570487][ T72] netlink_rcv_skb+0x130/0x360 [ 79.570487][ T72] netlink_unicast+0x449/0x710 [ 79.570487][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.570487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.570487][ T72] ___sys_sendmsg+0xee/0x170 [ 79.570487][ T72] __sys_sendmsg+0xcd/0x170 [ 79.570487][ T72] do_syscall_64+0xc6/0x1e0 [ 79.570487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.570487][ T72] [ 79.572539][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 79.572539][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.572539][ T72] ipv6_find_idev+0x102/0x170 [ 79.572539][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.572539][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.572539][ T72] netlink_rcv_skb+0x130/0x360 [ 79.572539][ T72] netlink_unicast+0x449/0x710 [ 79.572539][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.572539][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.572539][ T72] ___sys_sendmsg+0xee/0x170 [ 79.572539][ T72] __sys_sendmsg+0xcd/0x170 [ 79.572539][ T72] do_syscall_64+0xc6/0x1e0 [ 79.572539][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.572539][ T72] [ 79.574097][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 79.574097][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.574097][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.574097][ T72] ipv6_find_idev+0x102/0x170 [ 79.574097][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.574097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.574097][ T72] netlink_rcv_skb+0x130/0x360 [ 79.574097][ T72] netlink_unicast+0x449/0x710 [ 79.574097][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.574097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.574097][ T72] ___sys_sendmsg+0xee/0x170 [ 79.574097][ T72] __sys_sendmsg+0xcd/0x170 [ 79.574097][ T72] do_syscall_64+0xc6/0x1e0 [ 79.574097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.574097][ T72] [ 79.576246][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 79.576520][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 79.576520][ T72] netdev_get_by_index+0x5e/0x80 [ 79.576520][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.576520][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.576520][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.576520][ T72] ipv6_add_addr+0x411/0x2000 [ 79.576520][ T72] inet6_addr_add+0x30e/0xa40 [ 79.576520][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.576520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.576520][ T72] netlink_rcv_skb+0x130/0x360 [ 79.576520][ T72] netlink_unicast+0x449/0x710 [ 79.576520][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.576520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.576520][ T72] ___sys_sendmsg+0xee/0x170 [ 79.576520][ T72] __sys_sendmsg+0xcd/0x170 [ 79.576520][ T72] do_syscall_64+0xc6/0x1e0 [ 79.576520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.576520][ T72] [ 79.578568][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 79.578568][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.578568][ T72] ipv6_find_idev+0x102/0x170 [ 79.578568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.578568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.578568][ T72] netlink_rcv_skb+0x130/0x360 [ 79.578568][ T72] netlink_unicast+0x449/0x710 [ 79.578568][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.578568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.578568][ T72] ___sys_sendmsg+0xee/0x170 [ 79.578568][ T72] __sys_sendmsg+0xcd/0x170 [ 79.578568][ T72] do_syscall_64+0xc6/0x1e0 [ 79.578568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.578568][ T72] [ 79.580116][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 79.580116][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.580116][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.580116][ T72] ipv6_find_idev+0x102/0x170 [ 79.580116][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.580116][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.580116][ T72] netlink_rcv_skb+0x130/0x360 [ 79.580116][ T72] netlink_unicast+0x449/0x710 [ 79.580116][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.580116][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.580116][ T72] ___sys_sendmsg+0xee/0x170 [ 79.580116][ T72] __sys_sendmsg+0xcd/0x170 [ 79.580116][ T72] do_syscall_64+0xc6/0x1e0 [ 79.580116][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.580116][ T72] [ 79.581882][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 79.582155][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 79.582155][ T72] netdev_get_by_index+0x5e/0x80 [ 79.582155][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.582155][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.582155][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.582155][ T72] ipv6_add_addr+0x411/0x2000 [ 79.582155][ T72] inet6_addr_add+0x30e/0xa40 [ 79.582155][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.582155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.582155][ T72] netlink_rcv_skb+0x130/0x360 [ 79.582155][ T72] netlink_unicast+0x449/0x710 [ 79.582155][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.582155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.582155][ T72] ___sys_sendmsg+0xee/0x170 [ 79.582155][ T72] __sys_sendmsg+0xcd/0x170 [ 79.582155][ T72] do_syscall_64+0xc6/0x1e0 [ 79.582155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.582155][ T72] [ 79.584202][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 79.584202][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.584202][ T72] ipv6_find_idev+0x102/0x170 [ 79.584202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.584202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.584202][ T72] netlink_rcv_skb+0x130/0x360 [ 79.584202][ T72] netlink_unicast+0x449/0x710 [ 79.584202][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.584202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.584202][ T72] ___sys_sendmsg+0xee/0x170 [ 79.584202][ T72] __sys_sendmsg+0xcd/0x170 [ 79.584202][ T72] do_syscall_64+0xc6/0x1e0 [ 79.584202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.584202][ T72] [ 79.585866][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 79.585866][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.585866][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.585866][ T72] ipv6_find_idev+0x102/0x170 [ 79.585866][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.585866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.585866][ T72] netlink_rcv_skb+0x130/0x360 [ 79.585866][ T72] netlink_unicast+0x449/0x710 [ 79.585866][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.585866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.585866][ T72] ___sys_sendmsg+0xee/0x170 [ 79.585866][ T72] __sys_sendmsg+0xcd/0x170 [ 79.585866][ T72] do_syscall_64+0xc6/0x1e0 [ 79.585866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.585866][ T72] [ 79.587778][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 79.588057][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 79.588057][ T72] netdev_get_by_index+0x5e/0x80 [ 79.588057][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.588057][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.588057][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.588057][ T72] ipv6_add_addr+0x411/0x2000 [ 79.588057][ T72] inet6_addr_add+0x30e/0xa40 [ 79.588057][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.588057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.588057][ T72] netlink_rcv_skb+0x130/0x360 [ 79.588057][ T72] netlink_unicast+0x449/0x710 [ 79.588057][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.588057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.588057][ T72] ___sys_sendmsg+0xee/0x170 [ 79.588057][ T72] __sys_sendmsg+0xcd/0x170 [ 79.588057][ T72] do_syscall_64+0xc6/0x1e0 [ 79.588057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.588057][ T72] [ 79.590376][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 79.590376][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.590376][ T72] ipv6_find_idev+0x102/0x170 [ 79.590376][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.590376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.590376][ T72] netlink_rcv_skb+0x130/0x360 [ 79.590376][ T72] netlink_unicast+0x449/0x710 [ 79.590376][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.590376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.590376][ T72] ___sys_sendmsg+0xee/0x170 [ 79.590376][ T72] __sys_sendmsg+0xcd/0x170 [ 79.590376][ T72] do_syscall_64+0xc6/0x1e0 [ 79.590376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.590376][ T72] [ 79.592165][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 79.592165][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.592165][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.592165][ T72] ipv6_find_idev+0x102/0x170 [ 79.592165][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.592165][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.592165][ T72] netlink_rcv_skb+0x130/0x360 [ 79.592165][ T72] netlink_unicast+0x449/0x710 [ 79.592165][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.592165][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.592165][ T72] ___sys_sendmsg+0xee/0x170 [ 79.592165][ T72] __sys_sendmsg+0xcd/0x170 [ 79.592165][ T72] do_syscall_64+0xc6/0x1e0 [ 79.592165][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.592165][ T72] [ 79.594057][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 79.594330][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 79.594330][ T72] netdev_get_by_index+0x5e/0x80 [ 79.594330][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.594330][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.594330][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.594330][ T72] ipv6_add_addr+0x411/0x2000 [ 79.594330][ T72] inet6_addr_add+0x30e/0xa40 [ 79.594330][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.594330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.594330][ T72] netlink_rcv_skb+0x130/0x360 [ 79.594330][ T72] netlink_unicast+0x449/0x710 [ 79.594330][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.594330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.594330][ T72] ___sys_sendmsg+0xee/0x170 [ 79.594330][ T72] __sys_sendmsg+0xcd/0x170 [ 79.594330][ T72] do_syscall_64+0xc6/0x1e0 [ 79.594330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.594330][ T72] [ 79.596653][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 79.596653][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.596653][ T72] ipv6_find_idev+0x102/0x170 [ 79.596653][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.596653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.596653][ T72] netlink_rcv_skb+0x130/0x360 [ 79.596653][ T72] netlink_unicast+0x449/0x710 [ 79.596653][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.596653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.596653][ T72] ___sys_sendmsg+0xee/0x170 [ 79.596653][ T72] __sys_sendmsg+0xcd/0x170 [ 79.596653][ T72] do_syscall_64+0xc6/0x1e0 [ 79.596653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.596653][ T72] [ 79.598417][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 79.598417][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.598417][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.598417][ T72] ipv6_find_idev+0x102/0x170 [ 79.598417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.598417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.598417][ T72] netlink_rcv_skb+0x130/0x360 [ 79.598417][ T72] netlink_unicast+0x449/0x710 [ 79.598417][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.598417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.598417][ T72] ___sys_sendmsg+0xee/0x170 [ 79.598417][ T72] __sys_sendmsg+0xcd/0x170 [ 79.598417][ T72] do_syscall_64+0xc6/0x1e0 [ 79.598417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.598417][ T72] [ 79.600322][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 79.600598][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 79.600598][ T72] netdev_get_by_index+0x5e/0x80 [ 79.600598][ T72] fib6_nh_init+0x3d8/0x15b0 [ 79.600598][ T72] ip6_route_info_create+0xf18/0x17d0 [ 79.600598][ T72] addrconf_f6i_alloc+0x244/0x410 [ 79.600598][ T72] ipv6_add_addr+0x411/0x2000 [ 79.600598][ T72] inet6_addr_add+0x30e/0xa40 [ 79.600598][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 79.600598][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.600598][ T72] netlink_rcv_skb+0x130/0x360 [ 79.600598][ T72] netlink_unicast+0x449/0x710 [ 79.600598][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.600598][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.600598][ T72] ___sys_sendmsg+0xee/0x170 [ 79.600598][ T72] __sys_sendmsg+0xcd/0x170 [ 79.600598][ T72] do_syscall_64+0xc6/0x1e0 [ 79.600598][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.600598][ T72] [ 79.602839][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 79.602839][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 79.602839][ T72] ipv6_find_idev+0x102/0x170 [ 79.602839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.602839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.602839][ T72] netlink_rcv_skb+0x130/0x360 [ 79.602839][ T72] netlink_unicast+0x449/0x710 [ 79.602839][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.602839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.602839][ T72] ___sys_sendmsg+0xee/0x170 [ 79.602839][ T72] __sys_sendmsg+0xcd/0x170 [ 79.602839][ T72] do_syscall_64+0xc6/0x1e0 [ 79.602839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.602839][ T72] [ 79.604593][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 79.604593][ T72] neigh_parms_alloc+0x1e5/0x510 [ 79.604593][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 79.604593][ T72] ipv6_find_idev+0x102/0x170 [ 79.604593][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 79.604593][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 79.604593][ T72] netlink_rcv_skb+0x130/0x360 [ 79.604593][ T72] netlink_unicast+0x449/0x710 [ 79.604593][ T72] netlink_sendmsg+0x723/0xbe0 [ 79.604593][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 79.604593][ T72] ___sys_sendmsg+0xee/0x170 [ 79.604593][ T72] __sys_sendmsg+0xcd/0x170 [ 79.604593][ T72] do_syscall_64+0xc6/0x1e0 [ 79.604593][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 79.604593][ T72] [ 89.743968][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 89.744317][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 89.744317][ T72] netdev_get_by_index+0x5e/0x80 [ 89.744317][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.744317][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.744317][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.744317][ T72] ipv6_add_addr+0x411/0x2000 [ 89.744317][ T72] inet6_addr_add+0x30e/0xa40 [ 89.744317][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.744317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.744317][ T72] netlink_rcv_skb+0x130/0x360 [ 89.744317][ T72] netlink_unicast+0x449/0x710 [ 89.744317][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.744317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.744317][ T72] ___sys_sendmsg+0xee/0x170 [ 89.744317][ T72] __sys_sendmsg+0xcd/0x170 [ 89.744317][ T72] do_syscall_64+0xc6/0x1e0 [ 89.744317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.744317][ T72] [ 89.746411][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 89.746411][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.746411][ T72] ipv6_find_idev+0x102/0x170 [ 89.746411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.746411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.746411][ T72] netlink_rcv_skb+0x130/0x360 [ 89.746411][ T72] netlink_unicast+0x449/0x710 [ 89.746411][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.746411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.746411][ T72] ___sys_sendmsg+0xee/0x170 [ 89.746411][ T72] __sys_sendmsg+0xcd/0x170 [ 89.746411][ T72] do_syscall_64+0xc6/0x1e0 [ 89.746411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.746411][ T72] [ 89.748042][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 89.748042][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.748042][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.748042][ T72] ipv6_find_idev+0x102/0x170 [ 89.748042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.748042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.748042][ T72] netlink_rcv_skb+0x130/0x360 [ 89.748042][ T72] netlink_unicast+0x449/0x710 [ 89.748042][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.748042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.748042][ T72] ___sys_sendmsg+0xee/0x170 [ 89.748042][ T72] __sys_sendmsg+0xcd/0x170 [ 89.748042][ T72] do_syscall_64+0xc6/0x1e0 [ 89.748042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.748042][ T72] [ 89.749961][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 89.750256][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 89.750256][ T72] netdev_get_by_index+0x5e/0x80 [ 89.750256][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.750256][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.750256][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.750256][ T72] ipv6_add_addr+0x411/0x2000 [ 89.750256][ T72] inet6_addr_add+0x30e/0xa40 [ 89.750256][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.750256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.750256][ T72] netlink_rcv_skb+0x130/0x360 [ 89.750256][ T72] netlink_unicast+0x449/0x710 [ 89.750256][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.750256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.750256][ T72] ___sys_sendmsg+0xee/0x170 [ 89.750256][ T72] __sys_sendmsg+0xcd/0x170 [ 89.750256][ T72] do_syscall_64+0xc6/0x1e0 [ 89.750256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.750256][ T72] [ 89.752306][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 89.752306][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.752306][ T72] ipv6_find_idev+0x102/0x170 [ 89.752306][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.752306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.752306][ T72] netlink_rcv_skb+0x130/0x360 [ 89.752306][ T72] netlink_unicast+0x449/0x710 [ 89.752306][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.752306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.752306][ T72] ___sys_sendmsg+0xee/0x170 [ 89.752306][ T72] __sys_sendmsg+0xcd/0x170 [ 89.752306][ T72] do_syscall_64+0xc6/0x1e0 [ 89.752306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.752306][ T72] [ 89.753889][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 89.753889][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.753889][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.753889][ T72] ipv6_find_idev+0x102/0x170 [ 89.753889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.753889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.753889][ T72] netlink_rcv_skb+0x130/0x360 [ 89.753889][ T72] netlink_unicast+0x449/0x710 [ 89.753889][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.753889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.753889][ T72] ___sys_sendmsg+0xee/0x170 [ 89.753889][ T72] __sys_sendmsg+0xcd/0x170 [ 89.753889][ T72] do_syscall_64+0xc6/0x1e0 [ 89.753889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.753889][ T72] [ 89.755643][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 89.756008][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 89.756008][ T72] netdev_get_by_index+0x5e/0x80 [ 89.756008][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.756008][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.756008][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.756008][ T72] ipv6_add_addr+0x411/0x2000 [ 89.756008][ T72] inet6_addr_add+0x30e/0xa40 [ 89.756008][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.756008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.756008][ T72] netlink_rcv_skb+0x130/0x360 [ 89.756008][ T72] netlink_unicast+0x449/0x710 [ 89.756008][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.756008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.756008][ T72] ___sys_sendmsg+0xee/0x170 [ 89.756008][ T72] __sys_sendmsg+0xcd/0x170 [ 89.756008][ T72] do_syscall_64+0xc6/0x1e0 [ 89.756008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.756008][ T72] [ 89.758093][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 89.758093][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.758093][ T72] ipv6_find_idev+0x102/0x170 [ 89.758093][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.758093][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.758093][ T72] netlink_rcv_skb+0x130/0x360 [ 89.758093][ T72] netlink_unicast+0x449/0x710 [ 89.758093][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.758093][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.758093][ T72] ___sys_sendmsg+0xee/0x170 [ 89.758093][ T72] __sys_sendmsg+0xcd/0x170 [ 89.758093][ T72] do_syscall_64+0xc6/0x1e0 [ 89.758093][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.758093][ T72] [ 89.759790][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 89.759790][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.759790][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.759790][ T72] ipv6_find_idev+0x102/0x170 [ 89.759790][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.759790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.759790][ T72] netlink_rcv_skb+0x130/0x360 [ 89.759790][ T72] netlink_unicast+0x449/0x710 [ 89.759790][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.759790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.759790][ T72] ___sys_sendmsg+0xee/0x170 [ 89.759790][ T72] __sys_sendmsg+0xcd/0x170 [ 89.759790][ T72] do_syscall_64+0xc6/0x1e0 [ 89.759790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.759790][ T72] [ 89.761835][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 89.762113][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 89.762113][ T72] netdev_get_by_index+0x5e/0x80 [ 89.762113][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.762113][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.762113][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.762113][ T72] ipv6_add_addr+0x411/0x2000 [ 89.762113][ T72] inet6_addr_add+0x30e/0xa40 [ 89.762113][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.762113][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.762113][ T72] netlink_rcv_skb+0x130/0x360 [ 89.762113][ T72] netlink_unicast+0x449/0x710 [ 89.762113][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.762113][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.762113][ T72] ___sys_sendmsg+0xee/0x170 [ 89.762113][ T72] __sys_sendmsg+0xcd/0x170 [ 89.762113][ T72] do_syscall_64+0xc6/0x1e0 [ 89.762113][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.762113][ T72] [ 89.764329][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 89.764329][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.764329][ T72] ipv6_find_idev+0x102/0x170 [ 89.764329][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.764329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.764329][ T72] netlink_rcv_skb+0x130/0x360 [ 89.764329][ T72] netlink_unicast+0x449/0x710 [ 89.764329][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.764329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.764329][ T72] ___sys_sendmsg+0xee/0x170 [ 89.764329][ T72] __sys_sendmsg+0xcd/0x170 [ 89.764329][ T72] do_syscall_64+0xc6/0x1e0 [ 89.764329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.764329][ T72] [ 89.766069][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 89.766069][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.766069][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.766069][ T72] ipv6_find_idev+0x102/0x170 [ 89.766069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.766069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.766069][ T72] netlink_rcv_skb+0x130/0x360 [ 89.766069][ T72] netlink_unicast+0x449/0x710 [ 89.766069][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.766069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.766069][ T72] ___sys_sendmsg+0xee/0x170 [ 89.766069][ T72] __sys_sendmsg+0xcd/0x170 [ 89.766069][ T72] do_syscall_64+0xc6/0x1e0 [ 89.766069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.766069][ T72] [ 89.768473][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 89.768755][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 89.768755][ T72] netdev_get_by_index+0x5e/0x80 [ 89.768755][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.768755][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.768755][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.768755][ T72] ipv6_add_addr+0x411/0x2000 [ 89.768755][ T72] inet6_addr_add+0x30e/0xa40 [ 89.768755][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.768755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.768755][ T72] netlink_rcv_skb+0x130/0x360 [ 89.768755][ T72] netlink_unicast+0x449/0x710 [ 89.768755][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.768755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.768755][ T72] ___sys_sendmsg+0xee/0x170 [ 89.768755][ T72] __sys_sendmsg+0xcd/0x170 [ 89.768755][ T72] do_syscall_64+0xc6/0x1e0 [ 89.768755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.768755][ T72] [ 89.770921][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 89.770921][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.770921][ T72] ipv6_find_idev+0x102/0x170 [ 89.770921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.770921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.770921][ T72] netlink_rcv_skb+0x130/0x360 [ 89.770921][ T72] netlink_unicast+0x449/0x710 [ 89.770921][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.770921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.770921][ T72] ___sys_sendmsg+0xee/0x170 [ 89.770921][ T72] __sys_sendmsg+0xcd/0x170 [ 89.770921][ T72] do_syscall_64+0xc6/0x1e0 [ 89.770921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.770921][ T72] [ 89.772815][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 89.772815][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.772815][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.772815][ T72] ipv6_find_idev+0x102/0x170 [ 89.772815][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.772815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.772815][ T72] netlink_rcv_skb+0x130/0x360 [ 89.772815][ T72] netlink_unicast+0x449/0x710 [ 89.772815][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.772815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.772815][ T72] ___sys_sendmsg+0xee/0x170 [ 89.772815][ T72] __sys_sendmsg+0xcd/0x170 [ 89.772815][ T72] do_syscall_64+0xc6/0x1e0 [ 89.772815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.772815][ T72] [ 89.774803][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 89.775083][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 89.775083][ T72] netdev_get_by_index+0x5e/0x80 [ 89.775083][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.775083][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.775083][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.775083][ T72] ipv6_add_addr+0x411/0x2000 [ 89.775083][ T72] inet6_addr_add+0x30e/0xa40 [ 89.775083][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.775083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.775083][ T72] netlink_rcv_skb+0x130/0x360 [ 89.775083][ T72] netlink_unicast+0x449/0x710 [ 89.775083][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.775083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.775083][ T72] ___sys_sendmsg+0xee/0x170 [ 89.775083][ T72] __sys_sendmsg+0xcd/0x170 [ 89.775083][ T72] do_syscall_64+0xc6/0x1e0 [ 89.775083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.775083][ T72] [ 89.777164][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 89.777164][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.777164][ T72] ipv6_find_idev+0x102/0x170 [ 89.777164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.777164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.777164][ T72] netlink_rcv_skb+0x130/0x360 [ 89.777164][ T72] netlink_unicast+0x449/0x710 [ 89.777164][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.777164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.777164][ T72] ___sys_sendmsg+0xee/0x170 [ 89.777164][ T72] __sys_sendmsg+0xcd/0x170 [ 89.777164][ T72] do_syscall_64+0xc6/0x1e0 [ 89.777164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.777164][ T72] [ 89.778910][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 89.778910][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.778910][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.778910][ T72] ipv6_find_idev+0x102/0x170 [ 89.778910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.778910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.778910][ T72] netlink_rcv_skb+0x130/0x360 [ 89.778910][ T72] netlink_unicast+0x449/0x710 [ 89.778910][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.778910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.778910][ T72] ___sys_sendmsg+0xee/0x170 [ 89.778910][ T72] __sys_sendmsg+0xcd/0x170 [ 89.778910][ T72] do_syscall_64+0xc6/0x1e0 [ 89.778910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.778910][ T72] [ 89.780860][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 89.781204][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 89.781204][ T72] netdev_get_by_index+0x5e/0x80 [ 89.781204][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.781204][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.781204][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.781204][ T72] ipv6_add_addr+0x411/0x2000 [ 89.781204][ T72] inet6_addr_add+0x30e/0xa40 [ 89.781204][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.781204][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.781204][ T72] netlink_rcv_skb+0x130/0x360 [ 89.781204][ T72] netlink_unicast+0x449/0x710 [ 89.781204][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.781204][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.781204][ T72] ___sys_sendmsg+0xee/0x170 [ 89.781204][ T72] __sys_sendmsg+0xcd/0x170 [ 89.781204][ T72] do_syscall_64+0xc6/0x1e0 [ 89.781204][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.781204][ T72] [ 89.783532][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 89.783532][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.783532][ T72] ipv6_find_idev+0x102/0x170 [ 89.783532][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.783532][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.783532][ T72] netlink_rcv_skb+0x130/0x360 [ 89.783532][ T72] netlink_unicast+0x449/0x710 [ 89.783532][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.783532][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.783532][ T72] ___sys_sendmsg+0xee/0x170 [ 89.783532][ T72] __sys_sendmsg+0xcd/0x170 [ 89.783532][ T72] do_syscall_64+0xc6/0x1e0 [ 89.783532][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.783532][ T72] [ 89.785276][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 89.785276][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.785276][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.785276][ T72] ipv6_find_idev+0x102/0x170 [ 89.785276][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.785276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.785276][ T72] netlink_rcv_skb+0x130/0x360 [ 89.785276][ T72] netlink_unicast+0x449/0x710 [ 89.785276][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.785276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.785276][ T72] ___sys_sendmsg+0xee/0x170 [ 89.785276][ T72] __sys_sendmsg+0xcd/0x170 [ 89.785276][ T72] do_syscall_64+0xc6/0x1e0 [ 89.785276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.785276][ T72] [ 89.787357][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 89.787642][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 89.787642][ T72] netdev_get_by_index+0x5e/0x80 [ 89.787642][ T72] fib6_nh_init+0x3d8/0x15b0 [ 89.787642][ T72] ip6_route_info_create+0xf18/0x17d0 [ 89.787642][ T72] addrconf_f6i_alloc+0x244/0x410 [ 89.787642][ T72] ipv6_add_addr+0x411/0x2000 [ 89.787642][ T72] inet6_addr_add+0x30e/0xa40 [ 89.787642][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 89.787642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.787642][ T72] netlink_rcv_skb+0x130/0x360 [ 89.787642][ T72] netlink_unicast+0x449/0x710 [ 89.787642][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.787642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.787642][ T72] ___sys_sendmsg+0xee/0x170 [ 89.787642][ T72] __sys_sendmsg+0xcd/0x170 [ 89.787642][ T72] do_syscall_64+0xc6/0x1e0 [ 89.787642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.787642][ T72] [ 89.789964][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 89.789964][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 89.789964][ T72] ipv6_find_idev+0x102/0x170 [ 89.789964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.789964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.789964][ T72] netlink_rcv_skb+0x130/0x360 [ 89.789964][ T72] netlink_unicast+0x449/0x710 [ 89.789964][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.789964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.789964][ T72] ___sys_sendmsg+0xee/0x170 [ 89.789964][ T72] __sys_sendmsg+0xcd/0x170 [ 89.789964][ T72] do_syscall_64+0xc6/0x1e0 [ 89.789964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.789964][ T72] [ 89.791736][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 89.791736][ T72] neigh_parms_alloc+0x1e5/0x510 [ 89.791736][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 89.791736][ T72] ipv6_find_idev+0x102/0x170 [ 89.791736][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 89.791736][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 89.791736][ T72] netlink_rcv_skb+0x130/0x360 [ 89.791736][ T72] netlink_unicast+0x449/0x710 [ 89.791736][ T72] netlink_sendmsg+0x723/0xbe0 [ 89.791736][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 89.791736][ T72] ___sys_sendmsg+0xee/0x170 [ 89.791736][ T72] __sys_sendmsg+0xcd/0x170 [ 89.791736][ T72] do_syscall_64+0xc6/0x1e0 [ 89.791736][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 89.791736][ T72] [ 99.918866][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 99.924481][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 99.924481][ T72] netdev_get_by_index+0x5e/0x80 [ 99.924481][ T72] fib6_nh_init+0x3d8/0x15b0 [ 99.924481][ T72] ip6_route_info_create+0xf18/0x17d0 [ 99.924481][ T72] addrconf_f6i_alloc+0x244/0x410 [ 99.924481][ T72] ipv6_add_addr+0x411/0x2000 [ 99.924481][ T72] inet6_addr_add+0x30e/0xa40 [ 99.924481][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 99.924481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.924481][ T72] netlink_rcv_skb+0x130/0x360 [ 99.924481][ T72] netlink_unicast+0x449/0x710 [ 99.924481][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.924481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.924481][ T72] ___sys_sendmsg+0xee/0x170 [ 99.924481][ T72] __sys_sendmsg+0xcd/0x170 [ 99.924481][ T72] do_syscall_64+0xc6/0x1e0 [ 99.924481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.924481][ T72] [ 99.929522][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 99.929522][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 99.929522][ T72] ipv6_find_idev+0x102/0x170 [ 99.929522][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.929522][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.929522][ T72] netlink_rcv_skb+0x130/0x360 [ 99.929522][ T72] netlink_unicast+0x449/0x710 [ 99.929522][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.929522][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.929522][ T72] ___sys_sendmsg+0xee/0x170 [ 99.929522][ T72] __sys_sendmsg+0xcd/0x170 [ 99.929522][ T72] do_syscall_64+0xc6/0x1e0 [ 99.929522][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.929522][ T72] [ 99.933424][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 99.933424][ T72] neigh_parms_alloc+0x1e5/0x510 [ 99.933424][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 99.933424][ T72] ipv6_find_idev+0x102/0x170 [ 99.933424][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.933424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.933424][ T72] netlink_rcv_skb+0x130/0x360 [ 99.933424][ T72] netlink_unicast+0x449/0x710 [ 99.933424][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.933424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.933424][ T72] ___sys_sendmsg+0xee/0x170 [ 99.933424][ T72] __sys_sendmsg+0xcd/0x170 [ 99.933424][ T72] do_syscall_64+0xc6/0x1e0 [ 99.933424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.933424][ T72] [ 99.937260][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 99.937939][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 99.937939][ T72] netdev_get_by_index+0x5e/0x80 [ 99.937939][ T72] fib6_nh_init+0x3d8/0x15b0 [ 99.937939][ T72] ip6_route_info_create+0xf18/0x17d0 [ 99.937939][ T72] addrconf_f6i_alloc+0x244/0x410 [ 99.937939][ T72] ipv6_add_addr+0x411/0x2000 [ 99.937939][ T72] inet6_addr_add+0x30e/0xa40 [ 99.937939][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 99.937939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.937939][ T72] netlink_rcv_skb+0x130/0x360 [ 99.937939][ T72] netlink_unicast+0x449/0x710 [ 99.937939][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.937939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.937939][ T72] ___sys_sendmsg+0xee/0x170 [ 99.937939][ T72] __sys_sendmsg+0xcd/0x170 [ 99.937939][ T72] do_syscall_64+0xc6/0x1e0 [ 99.937939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.937939][ T72] [ 99.942703][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 99.942703][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 99.942703][ T72] ipv6_find_idev+0x102/0x170 [ 99.942703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.942703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.942703][ T72] netlink_rcv_skb+0x130/0x360 [ 99.942703][ T72] netlink_unicast+0x449/0x710 [ 99.942703][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.942703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.942703][ T72] ___sys_sendmsg+0xee/0x170 [ 99.942703][ T72] __sys_sendmsg+0xcd/0x170 [ 99.942703][ T72] do_syscall_64+0xc6/0x1e0 [ 99.942703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.942703][ T72] [ 99.946367][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 99.946367][ T72] neigh_parms_alloc+0x1e5/0x510 [ 99.946367][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 99.946367][ T72] ipv6_find_idev+0x102/0x170 [ 99.946367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.946367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.946367][ T72] netlink_rcv_skb+0x130/0x360 [ 99.946367][ T72] netlink_unicast+0x449/0x710 [ 99.946367][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.946367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.946367][ T72] ___sys_sendmsg+0xee/0x170 [ 99.946367][ T72] __sys_sendmsg+0xcd/0x170 [ 99.946367][ T72] do_syscall_64+0xc6/0x1e0 [ 99.946367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.946367][ T72] [ 99.951686][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 99.952348][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 99.952348][ T72] netdev_get_by_index+0x5e/0x80 [ 99.952348][ T72] fib6_nh_init+0x3d8/0x15b0 [ 99.952348][ T72] ip6_route_info_create+0xf18/0x17d0 [ 99.952348][ T72] addrconf_f6i_alloc+0x244/0x410 [ 99.952348][ T72] ipv6_add_addr+0x411/0x2000 [ 99.952348][ T72] inet6_addr_add+0x30e/0xa40 [ 99.952348][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 99.952348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.952348][ T72] netlink_rcv_skb+0x130/0x360 [ 99.952348][ T72] netlink_unicast+0x449/0x710 [ 99.952348][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.952348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.952348][ T72] ___sys_sendmsg+0xee/0x170 [ 99.952348][ T72] __sys_sendmsg+0xcd/0x170 [ 99.952348][ T72] do_syscall_64+0xc6/0x1e0 [ 99.952348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.952348][ T72] [ 99.956933][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 99.956933][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 99.956933][ T72] ipv6_find_idev+0x102/0x170 [ 99.956933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.956933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.956933][ T72] netlink_rcv_skb+0x130/0x360 [ 99.956933][ T72] netlink_unicast+0x449/0x710 [ 99.956933][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.956933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.956933][ T72] ___sys_sendmsg+0xee/0x170 [ 99.956933][ T72] __sys_sendmsg+0xcd/0x170 [ 99.956933][ T72] do_syscall_64+0xc6/0x1e0 [ 99.956933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.956933][ T72] [ 99.962809][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 99.962809][ T72] neigh_parms_alloc+0x1e5/0x510 [ 99.962809][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 99.962809][ T72] ipv6_find_idev+0x102/0x170 [ 99.962809][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.962809][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.962809][ T72] netlink_rcv_skb+0x130/0x360 [ 99.962809][ T72] netlink_unicast+0x449/0x710 [ 99.962809][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.962809][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.962809][ T72] ___sys_sendmsg+0xee/0x170 [ 99.962809][ T72] __sys_sendmsg+0xcd/0x170 [ 99.962809][ T72] do_syscall_64+0xc6/0x1e0 [ 99.962809][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.962809][ T72] [ 99.966889][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 99.967530][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 99.967530][ T72] netdev_get_by_index+0x5e/0x80 [ 99.967530][ T72] fib6_nh_init+0x3d8/0x15b0 [ 99.967530][ T72] ip6_route_info_create+0xf18/0x17d0 [ 99.967530][ T72] addrconf_f6i_alloc+0x244/0x410 [ 99.967530][ T72] ipv6_add_addr+0x411/0x2000 [ 99.967530][ T72] inet6_addr_add+0x30e/0xa40 [ 99.967530][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 99.967530][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.967530][ T72] netlink_rcv_skb+0x130/0x360 [ 99.967530][ T72] netlink_unicast+0x449/0x710 [ 99.967530][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.967530][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.967530][ T72] ___sys_sendmsg+0xee/0x170 [ 99.967530][ T72] __sys_sendmsg+0xcd/0x170 [ 99.967530][ T72] do_syscall_64+0xc6/0x1e0 [ 99.967530][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.967530][ T72] [ 99.972490][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 99.972490][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 99.972490][ T72] ipv6_find_idev+0x102/0x170 [ 99.972490][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.972490][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.972490][ T72] netlink_rcv_skb+0x130/0x360 [ 99.972490][ T72] netlink_unicast+0x449/0x710 [ 99.972490][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.972490][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.972490][ T72] ___sys_sendmsg+0xee/0x170 [ 99.972490][ T72] __sys_sendmsg+0xcd/0x170 [ 99.972490][ T72] do_syscall_64+0xc6/0x1e0 [ 99.972490][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.972490][ T72] [ 99.977037][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 99.977037][ T72] neigh_parms_alloc+0x1e5/0x510 [ 99.977037][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 99.977037][ T72] ipv6_find_idev+0x102/0x170 [ 99.977037][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.977037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.977037][ T72] netlink_rcv_skb+0x130/0x360 [ 99.977037][ T72] netlink_unicast+0x449/0x710 [ 99.977037][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.977037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.977037][ T72] ___sys_sendmsg+0xee/0x170 [ 99.977037][ T72] __sys_sendmsg+0xcd/0x170 [ 99.977037][ T72] do_syscall_64+0xc6/0x1e0 [ 99.977037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.977037][ T72] [ 99.980950][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 99.981595][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 99.981595][ T72] netdev_get_by_index+0x5e/0x80 [ 99.981595][ T72] fib6_nh_init+0x3d8/0x15b0 [ 99.981595][ T72] ip6_route_info_create+0xf18/0x17d0 [ 99.981595][ T72] addrconf_f6i_alloc+0x244/0x410 [ 99.981595][ T72] ipv6_add_addr+0x411/0x2000 [ 99.981595][ T72] inet6_addr_add+0x30e/0xa40 [ 99.981595][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 99.981595][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.981595][ T72] netlink_rcv_skb+0x130/0x360 [ 99.981595][ T72] netlink_unicast+0x449/0x710 [ 99.981595][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.981595][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.981595][ T72] ___sys_sendmsg+0xee/0x170 [ 99.981595][ T72] __sys_sendmsg+0xcd/0x170 [ 99.981595][ T72] do_syscall_64+0xc6/0x1e0 [ 99.981595][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.981595][ T72] [ 99.986494][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 99.986494][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 99.986494][ T72] ipv6_find_idev+0x102/0x170 [ 99.986494][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.986494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.986494][ T72] netlink_rcv_skb+0x130/0x360 [ 99.986494][ T72] netlink_unicast+0x449/0x710 [ 99.986494][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.986494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.986494][ T72] ___sys_sendmsg+0xee/0x170 [ 99.986494][ T72] __sys_sendmsg+0xcd/0x170 [ 99.986494][ T72] do_syscall_64+0xc6/0x1e0 [ 99.986494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.986494][ T72] [ 99.989828][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 99.989828][ T72] neigh_parms_alloc+0x1e5/0x510 [ 99.989828][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 99.989828][ T72] ipv6_find_idev+0x102/0x170 [ 99.989828][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.989828][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.989828][ T72] netlink_rcv_skb+0x130/0x360 [ 99.989828][ T72] netlink_unicast+0x449/0x710 [ 99.989828][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.989828][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.989828][ T72] ___sys_sendmsg+0xee/0x170 [ 99.989828][ T72] __sys_sendmsg+0xcd/0x170 [ 99.989828][ T72] do_syscall_64+0xc6/0x1e0 [ 99.989828][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.989828][ T72] [ 99.993629][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 99.995094][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 99.995094][ T72] netdev_get_by_index+0x5e/0x80 [ 99.995094][ T72] fib6_nh_init+0x3d8/0x15b0 [ 99.995094][ T72] ip6_route_info_create+0xf18/0x17d0 [ 99.995094][ T72] addrconf_f6i_alloc+0x244/0x410 [ 99.995094][ T72] ipv6_add_addr+0x411/0x2000 [ 99.995094][ T72] inet6_addr_add+0x30e/0xa40 [ 99.995094][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 99.995094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.995094][ T72] netlink_rcv_skb+0x130/0x360 [ 99.995094][ T72] netlink_unicast+0x449/0x710 [ 99.995094][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.995094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.995094][ T72] ___sys_sendmsg+0xee/0x170 [ 99.995094][ T72] __sys_sendmsg+0xcd/0x170 [ 99.995094][ T72] do_syscall_64+0xc6/0x1e0 [ 99.995094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.995094][ T72] [ 99.999016][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 99.999016][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 99.999016][ T72] ipv6_find_idev+0x102/0x170 [ 99.999016][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 99.999016][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 99.999016][ T72] netlink_rcv_skb+0x130/0x360 [ 99.999016][ T72] netlink_unicast+0x449/0x710 [ 99.999016][ T72] netlink_sendmsg+0x723/0xbe0 [ 99.999016][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 99.999016][ T72] ___sys_sendmsg+0xee/0x170 [ 99.999016][ T72] __sys_sendmsg+0xcd/0x170 [ 99.999016][ T72] do_syscall_64+0xc6/0x1e0 [ 99.999016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 99.999016][ T72] [ 100.002010][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 100.002010][ T72] neigh_parms_alloc+0x1e5/0x510 [ 100.002010][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 100.002010][ T72] ipv6_find_idev+0x102/0x170 [ 100.002010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 100.002010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 100.002010][ T72] netlink_rcv_skb+0x130/0x360 [ 100.002010][ T72] netlink_unicast+0x449/0x710 [ 100.002010][ T72] netlink_sendmsg+0x723/0xbe0 [ 100.002010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 100.002010][ T72] ___sys_sendmsg+0xee/0x170 [ 100.002010][ T72] __sys_sendmsg+0xcd/0x170 [ 100.002010][ T72] do_syscall_64+0xc6/0x1e0 [ 100.002010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 100.002010][ T72] [ 100.005309][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 100.006003][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 100.006003][ T72] netdev_get_by_index+0x5e/0x80 [ 100.006003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 100.006003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 100.006003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 100.006003][ T72] ipv6_add_addr+0x411/0x2000 [ 100.006003][ T72] inet6_addr_add+0x30e/0xa40 [ 100.006003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 100.006003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 100.006003][ T72] netlink_rcv_skb+0x130/0x360 [ 100.006003][ T72] netlink_unicast+0x449/0x710 [ 100.006003][ T72] netlink_sendmsg+0x723/0xbe0 [ 100.006003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 100.006003][ T72] ___sys_sendmsg+0xee/0x170 [ 100.006003][ T72] __sys_sendmsg+0xcd/0x170 [ 100.006003][ T72] do_syscall_64+0xc6/0x1e0 [ 100.006003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 100.006003][ T72] [ 100.010007][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 100.010007][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 100.010007][ T72] ipv6_find_idev+0x102/0x170 [ 100.010007][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 100.010007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 100.010007][ T72] netlink_rcv_skb+0x130/0x360 [ 100.010007][ T72] netlink_unicast+0x449/0x710 [ 100.010007][ T72] netlink_sendmsg+0x723/0xbe0 [ 100.010007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 100.010007][ T72] ___sys_sendmsg+0xee/0x170 [ 100.010007][ T72] __sys_sendmsg+0xcd/0x170 [ 100.010007][ T72] do_syscall_64+0xc6/0x1e0 [ 100.010007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 100.010007][ T72] [ 100.017933][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 100.017933][ T72] neigh_parms_alloc+0x1e5/0x510 [ 100.017933][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 100.017933][ T72] ipv6_find_idev+0x102/0x170 [ 100.017933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 100.017933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 100.017933][ T72] netlink_rcv_skb+0x130/0x360 [ 100.017933][ T72] netlink_unicast+0x449/0x710 [ 100.017933][ T72] netlink_sendmsg+0x723/0xbe0 [ 100.017933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 100.017933][ T72] ___sys_sendmsg+0xee/0x170 [ 100.017933][ T72] __sys_sendmsg+0xcd/0x170 [ 100.017933][ T72] do_syscall_64+0xc6/0x1e0 [ 100.017933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 100.017933][ T72] [ 100.022217][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 100.023027][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 100.023027][ T72] netdev_get_by_index+0x5e/0x80 [ 100.023027][ T72] fib6_nh_init+0x3d8/0x15b0 [ 100.023027][ T72] ip6_route_info_create+0xf18/0x17d0 [ 100.023027][ T72] addrconf_f6i_alloc+0x244/0x410 [ 100.023027][ T72] ipv6_add_addr+0x411/0x2000 [ 100.023027][ T72] inet6_addr_add+0x30e/0xa40 [ 100.023027][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 100.023027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 100.023027][ T72] netlink_rcv_skb+0x130/0x360 [ 100.023027][ T72] netlink_unicast+0x449/0x710 [ 100.023027][ T72] netlink_sendmsg+0x723/0xbe0 [ 100.023027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 100.023027][ T72] ___sys_sendmsg+0xee/0x170 [ 100.023027][ T72] __sys_sendmsg+0xcd/0x170 [ 100.023027][ T72] do_syscall_64+0xc6/0x1e0 [ 100.023027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 100.023027][ T72] [ 100.028080][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 100.028080][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 100.028080][ T72] ipv6_find_idev+0x102/0x170 [ 100.028080][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 100.028080][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 100.028080][ T72] netlink_rcv_skb+0x130/0x360 [ 100.028080][ T72] netlink_unicast+0x449/0x710 [ 100.028080][ T72] netlink_sendmsg+0x723/0xbe0 [ 100.028080][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 100.028080][ T72] ___sys_sendmsg+0xee/0x170 [ 100.028080][ T72] __sys_sendmsg+0xcd/0x170 [ 100.028080][ T72] do_syscall_64+0xc6/0x1e0 [ 100.028080][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 100.028080][ T72] [ 100.031881][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 100.031881][ T72] neigh_parms_alloc+0x1e5/0x510 [ 100.031881][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 100.031881][ T72] ipv6_find_idev+0x102/0x170 [ 100.031881][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 100.031881][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 100.031881][ T72] netlink_rcv_skb+0x130/0x360 [ 100.031881][ T72] netlink_unicast+0x449/0x710 [ 100.031881][ T72] netlink_sendmsg+0x723/0xbe0 [ 100.031881][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 100.031881][ T72] ___sys_sendmsg+0xee/0x170 [ 100.031881][ T72] __sys_sendmsg+0xcd/0x170 [ 100.031881][ T72] do_syscall_64+0xc6/0x1e0 [ 100.031881][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 100.031881][ T72] [ 107.596428][ C0] hrtimer: interrupt took 4963581 ns [ 110.150911][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 110.156144][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 110.156144][ T72] netdev_get_by_index+0x5e/0x80 [ 110.156144][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.156144][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.156144][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.156144][ T72] ipv6_add_addr+0x411/0x2000 [ 110.156144][ T72] inet6_addr_add+0x30e/0xa40 [ 110.156144][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.156144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.156144][ T72] netlink_rcv_skb+0x130/0x360 [ 110.156144][ T72] netlink_unicast+0x449/0x710 [ 110.156144][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.156144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.156144][ T72] ___sys_sendmsg+0xee/0x170 [ 110.156144][ T72] __sys_sendmsg+0xcd/0x170 [ 110.156144][ T72] do_syscall_64+0xc6/0x1e0 [ 110.156144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.156144][ T72] [ 110.161309][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 110.161309][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.161309][ T72] ipv6_find_idev+0x102/0x170 [ 110.161309][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.161309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.161309][ T72] netlink_rcv_skb+0x130/0x360 [ 110.161309][ T72] netlink_unicast+0x449/0x710 [ 110.161309][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.161309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.161309][ T72] ___sys_sendmsg+0xee/0x170 [ 110.161309][ T72] __sys_sendmsg+0xcd/0x170 [ 110.161309][ T72] do_syscall_64+0xc6/0x1e0 [ 110.161309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.161309][ T72] [ 110.164946][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 110.164946][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.164946][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.164946][ T72] ipv6_find_idev+0x102/0x170 [ 110.164946][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.164946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.164946][ T72] netlink_rcv_skb+0x130/0x360 [ 110.164946][ T72] netlink_unicast+0x449/0x710 [ 110.164946][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.164946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.164946][ T72] ___sys_sendmsg+0xee/0x170 [ 110.164946][ T72] __sys_sendmsg+0xcd/0x170 [ 110.164946][ T72] do_syscall_64+0xc6/0x1e0 [ 110.164946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.164946][ T72] [ 110.171445][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 110.173170][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 110.173170][ T72] netdev_get_by_index+0x5e/0x80 [ 110.173170][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.173170][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.173170][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.173170][ T72] ipv6_add_addr+0x411/0x2000 [ 110.173170][ T72] inet6_addr_add+0x30e/0xa40 [ 110.173170][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.173170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.173170][ T72] netlink_rcv_skb+0x130/0x360 [ 110.173170][ T72] netlink_unicast+0x449/0x710 [ 110.173170][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.173170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.173170][ T72] ___sys_sendmsg+0xee/0x170 [ 110.173170][ T72] __sys_sendmsg+0xcd/0x170 [ 110.173170][ T72] do_syscall_64+0xc6/0x1e0 [ 110.173170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.173170][ T72] [ 110.180409][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 110.180409][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.180409][ T72] ipv6_find_idev+0x102/0x170 [ 110.180409][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.180409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.180409][ T72] netlink_rcv_skb+0x130/0x360 [ 110.180409][ T72] netlink_unicast+0x449/0x710 [ 110.180409][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.180409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.180409][ T72] ___sys_sendmsg+0xee/0x170 [ 110.180409][ T72] __sys_sendmsg+0xcd/0x170 [ 110.180409][ T72] do_syscall_64+0xc6/0x1e0 [ 110.180409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.180409][ T72] [ 110.185304][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 110.185304][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.185304][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.185304][ T72] ipv6_find_idev+0x102/0x170 [ 110.185304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.185304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.185304][ T72] netlink_rcv_skb+0x130/0x360 [ 110.185304][ T72] netlink_unicast+0x449/0x710 [ 110.185304][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.185304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.185304][ T72] ___sys_sendmsg+0xee/0x170 [ 110.185304][ T72] __sys_sendmsg+0xcd/0x170 [ 110.185304][ T72] do_syscall_64+0xc6/0x1e0 [ 110.185304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.185304][ T72] [ 110.207836][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 110.208615][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 110.208615][ T72] netdev_get_by_index+0x5e/0x80 [ 110.208615][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.208615][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.208615][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.208615][ T72] ipv6_add_addr+0x411/0x2000 [ 110.208615][ T72] inet6_addr_add+0x30e/0xa40 [ 110.208615][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.208615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.208615][ T72] netlink_rcv_skb+0x130/0x360 [ 110.208615][ T72] netlink_unicast+0x449/0x710 [ 110.208615][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.208615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.208615][ T72] ___sys_sendmsg+0xee/0x170 [ 110.208615][ T72] __sys_sendmsg+0xcd/0x170 [ 110.208615][ T72] do_syscall_64+0xc6/0x1e0 [ 110.208615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.208615][ T72] [ 110.222585][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 110.222585][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.222585][ T72] ipv6_find_idev+0x102/0x170 [ 110.222585][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.222585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.222585][ T72] netlink_rcv_skb+0x130/0x360 [ 110.222585][ T72] netlink_unicast+0x449/0x710 [ 110.222585][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.222585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.222585][ T72] ___sys_sendmsg+0xee/0x170 [ 110.222585][ T72] __sys_sendmsg+0xcd/0x170 [ 110.222585][ T72] do_syscall_64+0xc6/0x1e0 [ 110.222585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.222585][ T72] [ 110.227613][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 110.227613][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.227613][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.227613][ T72] ipv6_find_idev+0x102/0x170 [ 110.227613][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.227613][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.227613][ T72] netlink_rcv_skb+0x130/0x360 [ 110.227613][ T72] netlink_unicast+0x449/0x710 [ 110.227613][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.227613][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.227613][ T72] ___sys_sendmsg+0xee/0x170 [ 110.227613][ T72] __sys_sendmsg+0xcd/0x170 [ 110.227613][ T72] do_syscall_64+0xc6/0x1e0 [ 110.227613][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.227613][ T72] [ 110.237005][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 110.237710][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 110.237710][ T72] netdev_get_by_index+0x5e/0x80 [ 110.237710][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.237710][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.237710][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.237710][ T72] ipv6_add_addr+0x411/0x2000 [ 110.237710][ T72] inet6_addr_add+0x30e/0xa40 [ 110.237710][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.237710][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.237710][ T72] netlink_rcv_skb+0x130/0x360 [ 110.237710][ T72] netlink_unicast+0x449/0x710 [ 110.237710][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.237710][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.237710][ T72] ___sys_sendmsg+0xee/0x170 [ 110.237710][ T72] __sys_sendmsg+0xcd/0x170 [ 110.237710][ T72] do_syscall_64+0xc6/0x1e0 [ 110.237710][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.237710][ T72] [ 110.243029][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 110.243029][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.243029][ T72] ipv6_find_idev+0x102/0x170 [ 110.243029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.243029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.243029][ T72] netlink_rcv_skb+0x130/0x360 [ 110.243029][ T72] netlink_unicast+0x449/0x710 [ 110.243029][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.243029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.243029][ T72] ___sys_sendmsg+0xee/0x170 [ 110.243029][ T72] __sys_sendmsg+0xcd/0x170 [ 110.243029][ T72] do_syscall_64+0xc6/0x1e0 [ 110.243029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.243029][ T72] [ 110.248336][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 110.248336][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.248336][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.248336][ T72] ipv6_find_idev+0x102/0x170 [ 110.248336][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.248336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.248336][ T72] netlink_rcv_skb+0x130/0x360 [ 110.248336][ T72] netlink_unicast+0x449/0x710 [ 110.248336][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.248336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.248336][ T72] ___sys_sendmsg+0xee/0x170 [ 110.248336][ T72] __sys_sendmsg+0xcd/0x170 [ 110.248336][ T72] do_syscall_64+0xc6/0x1e0 [ 110.248336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.248336][ T72] [ 110.255504][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 110.257304][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 110.257304][ T72] netdev_get_by_index+0x5e/0x80 [ 110.257304][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.257304][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.257304][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.257304][ T72] ipv6_add_addr+0x411/0x2000 [ 110.257304][ T72] inet6_addr_add+0x30e/0xa40 [ 110.257304][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.257304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.257304][ T72] netlink_rcv_skb+0x130/0x360 [ 110.257304][ T72] netlink_unicast+0x449/0x710 [ 110.257304][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.257304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.257304][ T72] ___sys_sendmsg+0xee/0x170 [ 110.257304][ T72] __sys_sendmsg+0xcd/0x170 [ 110.257304][ T72] do_syscall_64+0xc6/0x1e0 [ 110.257304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.257304][ T72] [ 110.261755][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 110.261755][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.261755][ T72] ipv6_find_idev+0x102/0x170 [ 110.261755][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.261755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.261755][ T72] netlink_rcv_skb+0x130/0x360 [ 110.261755][ T72] netlink_unicast+0x449/0x710 [ 110.261755][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.261755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.261755][ T72] ___sys_sendmsg+0xee/0x170 [ 110.261755][ T72] __sys_sendmsg+0xcd/0x170 [ 110.261755][ T72] do_syscall_64+0xc6/0x1e0 [ 110.261755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.261755][ T72] [ 110.266925][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 110.266925][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.266925][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.266925][ T72] ipv6_find_idev+0x102/0x170 [ 110.266925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.266925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.266925][ T72] netlink_rcv_skb+0x130/0x360 [ 110.266925][ T72] netlink_unicast+0x449/0x710 [ 110.266925][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.266925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.266925][ T72] ___sys_sendmsg+0xee/0x170 [ 110.266925][ T72] __sys_sendmsg+0xcd/0x170 [ 110.266925][ T72] do_syscall_64+0xc6/0x1e0 [ 110.266925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.266925][ T72] [ 110.273581][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 110.274851][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 110.274851][ T72] netdev_get_by_index+0x5e/0x80 [ 110.274851][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.274851][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.274851][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.274851][ T72] ipv6_add_addr+0x411/0x2000 [ 110.274851][ T72] inet6_addr_add+0x30e/0xa40 [ 110.274851][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.274851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.274851][ T72] netlink_rcv_skb+0x130/0x360 [ 110.274851][ T72] netlink_unicast+0x449/0x710 [ 110.274851][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.274851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.274851][ T72] ___sys_sendmsg+0xee/0x170 [ 110.274851][ T72] __sys_sendmsg+0xcd/0x170 [ 110.274851][ T72] do_syscall_64+0xc6/0x1e0 [ 110.274851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.274851][ T72] [ 110.280158][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 110.280158][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.280158][ T72] ipv6_find_idev+0x102/0x170 [ 110.280158][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.280158][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.280158][ T72] netlink_rcv_skb+0x130/0x360 [ 110.280158][ T72] netlink_unicast+0x449/0x710 [ 110.280158][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.280158][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.280158][ T72] ___sys_sendmsg+0xee/0x170 [ 110.280158][ T72] __sys_sendmsg+0xcd/0x170 [ 110.280158][ T72] do_syscall_64+0xc6/0x1e0 [ 110.280158][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.280158][ T72] [ 110.284034][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 110.284034][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.284034][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.284034][ T72] ipv6_find_idev+0x102/0x170 [ 110.284034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.284034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.284034][ T72] netlink_rcv_skb+0x130/0x360 [ 110.284034][ T72] netlink_unicast+0x449/0x710 [ 110.284034][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.284034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.284034][ T72] ___sys_sendmsg+0xee/0x170 [ 110.284034][ T72] __sys_sendmsg+0xcd/0x170 [ 110.284034][ T72] do_syscall_64+0xc6/0x1e0 [ 110.284034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.284034][ T72] [ 110.314116][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 110.316159][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 110.316159][ T72] netdev_get_by_index+0x5e/0x80 [ 110.316159][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.316159][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.316159][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.316159][ T72] ipv6_add_addr+0x411/0x2000 [ 110.316159][ T72] inet6_addr_add+0x30e/0xa40 [ 110.316159][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.316159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.316159][ T72] netlink_rcv_skb+0x130/0x360 [ 110.316159][ T72] netlink_unicast+0x449/0x710 [ 110.316159][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.316159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.316159][ T72] ___sys_sendmsg+0xee/0x170 [ 110.316159][ T72] __sys_sendmsg+0xcd/0x170 [ 110.316159][ T72] do_syscall_64+0xc6/0x1e0 [ 110.316159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.316159][ T72] [ 110.320986][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 110.320986][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.320986][ T72] ipv6_find_idev+0x102/0x170 [ 110.320986][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.320986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.320986][ T72] netlink_rcv_skb+0x130/0x360 [ 110.320986][ T72] netlink_unicast+0x449/0x710 [ 110.320986][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.320986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.320986][ T72] ___sys_sendmsg+0xee/0x170 [ 110.320986][ T72] __sys_sendmsg+0xcd/0x170 [ 110.320986][ T72] do_syscall_64+0xc6/0x1e0 [ 110.320986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.320986][ T72] [ 110.324103][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 110.324103][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.324103][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.324103][ T72] ipv6_find_idev+0x102/0x170 [ 110.324103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.324103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.324103][ T72] netlink_rcv_skb+0x130/0x360 [ 110.324103][ T72] netlink_unicast+0x449/0x710 [ 110.324103][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.324103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.324103][ T72] ___sys_sendmsg+0xee/0x170 [ 110.324103][ T72] __sys_sendmsg+0xcd/0x170 [ 110.324103][ T72] do_syscall_64+0xc6/0x1e0 [ 110.324103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.324103][ T72] [ 110.330151][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 110.331068][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 110.331068][ T72] netdev_get_by_index+0x5e/0x80 [ 110.331068][ T72] fib6_nh_init+0x3d8/0x15b0 [ 110.331068][ T72] ip6_route_info_create+0xf18/0x17d0 [ 110.331068][ T72] addrconf_f6i_alloc+0x244/0x410 [ 110.331068][ T72] ipv6_add_addr+0x411/0x2000 [ 110.331068][ T72] inet6_addr_add+0x30e/0xa40 [ 110.331068][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 110.331068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.331068][ T72] netlink_rcv_skb+0x130/0x360 [ 110.331068][ T72] netlink_unicast+0x449/0x710 [ 110.331068][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.331068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.331068][ T72] ___sys_sendmsg+0xee/0x170 [ 110.331068][ T72] __sys_sendmsg+0xcd/0x170 [ 110.331068][ T72] do_syscall_64+0xc6/0x1e0 [ 110.331068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.331068][ T72] [ 110.335085][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 110.335085][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 110.335085][ T72] ipv6_find_idev+0x102/0x170 [ 110.335085][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.335085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.335085][ T72] netlink_rcv_skb+0x130/0x360 [ 110.335085][ T72] netlink_unicast+0x449/0x710 [ 110.335085][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.335085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.335085][ T72] ___sys_sendmsg+0xee/0x170 [ 110.335085][ T72] __sys_sendmsg+0xcd/0x170 [ 110.335085][ T72] do_syscall_64+0xc6/0x1e0 [ 110.335085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.335085][ T72] [ 110.338117][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 110.338117][ T72] neigh_parms_alloc+0x1e5/0x510 [ 110.338117][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 110.338117][ T72] ipv6_find_idev+0x102/0x170 [ 110.338117][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 110.338117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 110.338117][ T72] netlink_rcv_skb+0x130/0x360 [ 110.338117][ T72] netlink_unicast+0x449/0x710 [ 110.338117][ T72] netlink_sendmsg+0x723/0xbe0 [ 110.338117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 110.338117][ T72] ___sys_sendmsg+0xee/0x170 [ 110.338117][ T72] __sys_sendmsg+0xcd/0x170 [ 110.338117][ T72] do_syscall_64+0xc6/0x1e0 [ 110.338117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 110.338117][ T72] [ 120.574850][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 120.580773][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 120.580773][ T72] netdev_get_by_index+0x5e/0x80 [ 120.580773][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.580773][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.580773][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.580773][ T72] ipv6_add_addr+0x411/0x2000 [ 120.580773][ T72] inet6_addr_add+0x30e/0xa40 [ 120.580773][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.580773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.580773][ T72] netlink_rcv_skb+0x130/0x360 [ 120.580773][ T72] netlink_unicast+0x449/0x710 [ 120.580773][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.580773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.580773][ T72] ___sys_sendmsg+0xee/0x170 [ 120.580773][ T72] __sys_sendmsg+0xcd/0x170 [ 120.580773][ T72] do_syscall_64+0xc6/0x1e0 [ 120.580773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.580773][ T72] [ 120.588784][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 120.588784][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.588784][ T72] ipv6_find_idev+0x102/0x170 [ 120.588784][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.588784][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.588784][ T72] netlink_rcv_skb+0x130/0x360 [ 120.588784][ T72] netlink_unicast+0x449/0x710 [ 120.588784][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.588784][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.588784][ T72] ___sys_sendmsg+0xee/0x170 [ 120.588784][ T72] __sys_sendmsg+0xcd/0x170 [ 120.588784][ T72] do_syscall_64+0xc6/0x1e0 [ 120.588784][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.588784][ T72] [ 120.594213][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 120.594213][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.594213][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.594213][ T72] ipv6_find_idev+0x102/0x170 [ 120.594213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.594213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.594213][ T72] netlink_rcv_skb+0x130/0x360 [ 120.594213][ T72] netlink_unicast+0x449/0x710 [ 120.594213][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.594213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.594213][ T72] ___sys_sendmsg+0xee/0x170 [ 120.594213][ T72] __sys_sendmsg+0xcd/0x170 [ 120.594213][ T72] do_syscall_64+0xc6/0x1e0 [ 120.594213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.594213][ T72] [ 120.608349][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 120.609530][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 120.609530][ T72] netdev_get_by_index+0x5e/0x80 [ 120.609530][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.609530][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.609530][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.609530][ T72] ipv6_add_addr+0x411/0x2000 [ 120.609530][ T72] inet6_addr_add+0x30e/0xa40 [ 120.609530][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.609530][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.609530][ T72] netlink_rcv_skb+0x130/0x360 [ 120.609530][ T72] netlink_unicast+0x449/0x710 [ 120.609530][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.609530][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.609530][ T72] ___sys_sendmsg+0xee/0x170 [ 120.609530][ T72] __sys_sendmsg+0xcd/0x170 [ 120.609530][ T72] do_syscall_64+0xc6/0x1e0 [ 120.609530][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.609530][ T72] [ 120.616855][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 120.616855][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.616855][ T72] ipv6_find_idev+0x102/0x170 [ 120.616855][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.616855][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.616855][ T72] netlink_rcv_skb+0x130/0x360 [ 120.616855][ T72] netlink_unicast+0x449/0x710 [ 120.616855][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.616855][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.616855][ T72] ___sys_sendmsg+0xee/0x170 [ 120.616855][ T72] __sys_sendmsg+0xcd/0x170 [ 120.616855][ T72] do_syscall_64+0xc6/0x1e0 [ 120.616855][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.616855][ T72] [ 120.622876][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 120.622876][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.622876][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.622876][ T72] ipv6_find_idev+0x102/0x170 [ 120.622876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.622876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.622876][ T72] netlink_rcv_skb+0x130/0x360 [ 120.622876][ T72] netlink_unicast+0x449/0x710 [ 120.622876][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.622876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.622876][ T72] ___sys_sendmsg+0xee/0x170 [ 120.622876][ T72] __sys_sendmsg+0xcd/0x170 [ 120.622876][ T72] do_syscall_64+0xc6/0x1e0 [ 120.622876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.622876][ T72] [ 120.641783][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 120.642343][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 120.642343][ T72] netdev_get_by_index+0x5e/0x80 [ 120.642343][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.642343][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.642343][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.642343][ T72] ipv6_add_addr+0x411/0x2000 [ 120.642343][ T72] inet6_addr_add+0x30e/0xa40 [ 120.642343][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.642343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.642343][ T72] netlink_rcv_skb+0x130/0x360 [ 120.642343][ T72] netlink_unicast+0x449/0x710 [ 120.642343][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.642343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.642343][ T72] ___sys_sendmsg+0xee/0x170 [ 120.642343][ T72] __sys_sendmsg+0xcd/0x170 [ 120.642343][ T72] do_syscall_64+0xc6/0x1e0 [ 120.642343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.642343][ T72] [ 120.646813][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 120.646813][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.646813][ T72] ipv6_find_idev+0x102/0x170 [ 120.646813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.646813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.646813][ T72] netlink_rcv_skb+0x130/0x360 [ 120.646813][ T72] netlink_unicast+0x449/0x710 [ 120.646813][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.646813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.646813][ T72] ___sys_sendmsg+0xee/0x170 [ 120.646813][ T72] __sys_sendmsg+0xcd/0x170 [ 120.646813][ T72] do_syscall_64+0xc6/0x1e0 [ 120.646813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.646813][ T72] [ 120.650265][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 120.650265][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.650265][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.650265][ T72] ipv6_find_idev+0x102/0x170 [ 120.650265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.650265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.650265][ T72] netlink_rcv_skb+0x130/0x360 [ 120.650265][ T72] netlink_unicast+0x449/0x710 [ 120.650265][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.650265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.650265][ T72] ___sys_sendmsg+0xee/0x170 [ 120.650265][ T72] __sys_sendmsg+0xcd/0x170 [ 120.650265][ T72] do_syscall_64+0xc6/0x1e0 [ 120.650265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.650265][ T72] [ 120.670685][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 120.671836][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 120.671836][ T72] netdev_get_by_index+0x5e/0x80 [ 120.671836][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.671836][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.671836][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.671836][ T72] ipv6_add_addr+0x411/0x2000 [ 120.671836][ T72] inet6_addr_add+0x30e/0xa40 [ 120.671836][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.671836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.671836][ T72] netlink_rcv_skb+0x130/0x360 [ 120.671836][ T72] netlink_unicast+0x449/0x710 [ 120.671836][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.671836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.671836][ T72] ___sys_sendmsg+0xee/0x170 [ 120.671836][ T72] __sys_sendmsg+0xcd/0x170 [ 120.671836][ T72] do_syscall_64+0xc6/0x1e0 [ 120.671836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.671836][ T72] [ 120.678115][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 120.678115][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.678115][ T72] ipv6_find_idev+0x102/0x170 [ 120.678115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.678115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.678115][ T72] netlink_rcv_skb+0x130/0x360 [ 120.678115][ T72] netlink_unicast+0x449/0x710 [ 120.678115][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.678115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.678115][ T72] ___sys_sendmsg+0xee/0x170 [ 120.678115][ T72] __sys_sendmsg+0xcd/0x170 [ 120.678115][ T72] do_syscall_64+0xc6/0x1e0 [ 120.678115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.678115][ T72] [ 120.683403][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 120.683403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.683403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.683403][ T72] ipv6_find_idev+0x102/0x170 [ 120.683403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.683403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.683403][ T72] netlink_rcv_skb+0x130/0x360 [ 120.683403][ T72] netlink_unicast+0x449/0x710 [ 120.683403][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.683403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.683403][ T72] ___sys_sendmsg+0xee/0x170 [ 120.683403][ T72] __sys_sendmsg+0xcd/0x170 [ 120.683403][ T72] do_syscall_64+0xc6/0x1e0 [ 120.683403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.683403][ T72] [ 120.687211][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 120.687782][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 120.687782][ T72] netdev_get_by_index+0x5e/0x80 [ 120.687782][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.687782][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.687782][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.687782][ T72] ipv6_add_addr+0x411/0x2000 [ 120.687782][ T72] inet6_addr_add+0x30e/0xa40 [ 120.687782][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.687782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.687782][ T72] netlink_rcv_skb+0x130/0x360 [ 120.687782][ T72] netlink_unicast+0x449/0x710 [ 120.687782][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.687782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.687782][ T72] ___sys_sendmsg+0xee/0x170 [ 120.687782][ T72] __sys_sendmsg+0xcd/0x170 [ 120.687782][ T72] do_syscall_64+0xc6/0x1e0 [ 120.687782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.687782][ T72] [ 120.694971][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 120.694971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.694971][ T72] ipv6_find_idev+0x102/0x170 [ 120.694971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.694971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.694971][ T72] netlink_rcv_skb+0x130/0x360 [ 120.694971][ T72] netlink_unicast+0x449/0x710 [ 120.694971][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.694971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.694971][ T72] ___sys_sendmsg+0xee/0x170 [ 120.694971][ T72] __sys_sendmsg+0xcd/0x170 [ 120.694971][ T72] do_syscall_64+0xc6/0x1e0 [ 120.694971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.694971][ T72] [ 120.700684][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 120.700684][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.700684][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.700684][ T72] ipv6_find_idev+0x102/0x170 [ 120.700684][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.700684][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.700684][ T72] netlink_rcv_skb+0x130/0x360 [ 120.700684][ T72] netlink_unicast+0x449/0x710 [ 120.700684][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.700684][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.700684][ T72] ___sys_sendmsg+0xee/0x170 [ 120.700684][ T72] __sys_sendmsg+0xcd/0x170 [ 120.700684][ T72] do_syscall_64+0xc6/0x1e0 [ 120.700684][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.700684][ T72] [ 120.707503][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 120.708456][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 120.708456][ T72] netdev_get_by_index+0x5e/0x80 [ 120.708456][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.708456][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.708456][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.708456][ T72] ipv6_add_addr+0x411/0x2000 [ 120.708456][ T72] inet6_addr_add+0x30e/0xa40 [ 120.708456][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.708456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.708456][ T72] netlink_rcv_skb+0x130/0x360 [ 120.708456][ T72] netlink_unicast+0x449/0x710 [ 120.708456][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.708456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.708456][ T72] ___sys_sendmsg+0xee/0x170 [ 120.708456][ T72] __sys_sendmsg+0xcd/0x170 [ 120.708456][ T72] do_syscall_64+0xc6/0x1e0 [ 120.708456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.708456][ T72] [ 120.713799][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 120.713799][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.713799][ T72] ipv6_find_idev+0x102/0x170 [ 120.713799][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.713799][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.713799][ T72] netlink_rcv_skb+0x130/0x360 [ 120.713799][ T72] netlink_unicast+0x449/0x710 [ 120.713799][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.713799][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.713799][ T72] ___sys_sendmsg+0xee/0x170 [ 120.713799][ T72] __sys_sendmsg+0xcd/0x170 [ 120.713799][ T72] do_syscall_64+0xc6/0x1e0 [ 120.713799][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.713799][ T72] [ 120.718024][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 120.718024][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.718024][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.718024][ T72] ipv6_find_idev+0x102/0x170 [ 120.718024][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.718024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.718024][ T72] netlink_rcv_skb+0x130/0x360 [ 120.718024][ T72] netlink_unicast+0x449/0x710 [ 120.718024][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.718024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.718024][ T72] ___sys_sendmsg+0xee/0x170 [ 120.718024][ T72] __sys_sendmsg+0xcd/0x170 [ 120.718024][ T72] do_syscall_64+0xc6/0x1e0 [ 120.718024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.718024][ T72] [ 120.723070][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 120.723813][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 120.723813][ T72] netdev_get_by_index+0x5e/0x80 [ 120.723813][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.723813][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.723813][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.723813][ T72] ipv6_add_addr+0x411/0x2000 [ 120.723813][ T72] inet6_addr_add+0x30e/0xa40 [ 120.723813][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.723813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.723813][ T72] netlink_rcv_skb+0x130/0x360 [ 120.723813][ T72] netlink_unicast+0x449/0x710 [ 120.723813][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.723813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.723813][ T72] ___sys_sendmsg+0xee/0x170 [ 120.723813][ T72] __sys_sendmsg+0xcd/0x170 [ 120.723813][ T72] do_syscall_64+0xc6/0x1e0 [ 120.723813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.723813][ T72] [ 120.729049][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 120.729049][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.729049][ T72] ipv6_find_idev+0x102/0x170 [ 120.729049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.729049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.729049][ T72] netlink_rcv_skb+0x130/0x360 [ 120.729049][ T72] netlink_unicast+0x449/0x710 [ 120.729049][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.729049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.729049][ T72] ___sys_sendmsg+0xee/0x170 [ 120.729049][ T72] __sys_sendmsg+0xcd/0x170 [ 120.729049][ T72] do_syscall_64+0xc6/0x1e0 [ 120.729049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.729049][ T72] [ 120.732996][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 120.732996][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.732996][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.732996][ T72] ipv6_find_idev+0x102/0x170 [ 120.732996][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.732996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.732996][ T72] netlink_rcv_skb+0x130/0x360 [ 120.732996][ T72] netlink_unicast+0x449/0x710 [ 120.732996][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.732996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.732996][ T72] ___sys_sendmsg+0xee/0x170 [ 120.732996][ T72] __sys_sendmsg+0xcd/0x170 [ 120.732996][ T72] do_syscall_64+0xc6/0x1e0 [ 120.732996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.732996][ T72] [ 120.737694][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 120.738533][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 120.738533][ T72] netdev_get_by_index+0x5e/0x80 [ 120.738533][ T72] fib6_nh_init+0x3d8/0x15b0 [ 120.738533][ T72] ip6_route_info_create+0xf18/0x17d0 [ 120.738533][ T72] addrconf_f6i_alloc+0x244/0x410 [ 120.738533][ T72] ipv6_add_addr+0x411/0x2000 [ 120.738533][ T72] inet6_addr_add+0x30e/0xa40 [ 120.738533][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 120.738533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.738533][ T72] netlink_rcv_skb+0x130/0x360 [ 120.738533][ T72] netlink_unicast+0x449/0x710 [ 120.738533][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.738533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.738533][ T72] ___sys_sendmsg+0xee/0x170 [ 120.738533][ T72] __sys_sendmsg+0xcd/0x170 [ 120.738533][ T72] do_syscall_64+0xc6/0x1e0 [ 120.738533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.738533][ T72] [ 120.744148][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 120.744148][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 120.744148][ T72] ipv6_find_idev+0x102/0x170 [ 120.744148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.744148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.744148][ T72] netlink_rcv_skb+0x130/0x360 [ 120.744148][ T72] netlink_unicast+0x449/0x710 [ 120.744148][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.744148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.744148][ T72] ___sys_sendmsg+0xee/0x170 [ 120.744148][ T72] __sys_sendmsg+0xcd/0x170 [ 120.744148][ T72] do_syscall_64+0xc6/0x1e0 [ 120.744148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.744148][ T72] [ 120.750267][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 120.750267][ T72] neigh_parms_alloc+0x1e5/0x510 [ 120.750267][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 120.750267][ T72] ipv6_find_idev+0x102/0x170 [ 120.750267][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 120.750267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 120.750267][ T72] netlink_rcv_skb+0x130/0x360 [ 120.750267][ T72] netlink_unicast+0x449/0x710 [ 120.750267][ T72] netlink_sendmsg+0x723/0xbe0 [ 120.750267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 120.750267][ T72] ___sys_sendmsg+0xee/0x170 [ 120.750267][ T72] __sys_sendmsg+0xcd/0x170 [ 120.750267][ T72] do_syscall_64+0xc6/0x1e0 [ 120.750267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 120.750267][ T72] [ 130.942850][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 130.961218][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 130.961218][ T72] netdev_get_by_index+0x5e/0x80 [ 130.961218][ T72] fib6_nh_init+0x3d8/0x15b0 [ 130.961218][ T72] ip6_route_info_create+0xf18/0x17d0 [ 130.961218][ T72] addrconf_f6i_alloc+0x244/0x410 [ 130.961218][ T72] ipv6_add_addr+0x411/0x2000 [ 130.961218][ T72] inet6_addr_add+0x30e/0xa40 [ 130.961218][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 130.961218][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.961218][ T72] netlink_rcv_skb+0x130/0x360 [ 130.961218][ T72] netlink_unicast+0x449/0x710 [ 130.961218][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.961218][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.961218][ T72] ___sys_sendmsg+0xee/0x170 [ 130.961218][ T72] __sys_sendmsg+0xcd/0x170 [ 130.961218][ T72] do_syscall_64+0xc6/0x1e0 [ 130.961218][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.961218][ T72] [ 130.964973][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 130.964973][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 130.964973][ T72] ipv6_find_idev+0x102/0x170 [ 130.964973][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 130.964973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.964973][ T72] netlink_rcv_skb+0x130/0x360 [ 130.964973][ T72] netlink_unicast+0x449/0x710 [ 130.964973][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.964973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.964973][ T72] ___sys_sendmsg+0xee/0x170 [ 130.964973][ T72] __sys_sendmsg+0xcd/0x170 [ 130.964973][ T72] do_syscall_64+0xc6/0x1e0 [ 130.964973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.964973][ T72] [ 130.967834][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 130.967834][ T72] neigh_parms_alloc+0x1e5/0x510 [ 130.967834][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 130.967834][ T72] ipv6_find_idev+0x102/0x170 [ 130.967834][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 130.967834][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.967834][ T72] netlink_rcv_skb+0x130/0x360 [ 130.967834][ T72] netlink_unicast+0x449/0x710 [ 130.967834][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.967834][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.967834][ T72] ___sys_sendmsg+0xee/0x170 [ 130.967834][ T72] __sys_sendmsg+0xcd/0x170 [ 130.967834][ T72] do_syscall_64+0xc6/0x1e0 [ 130.967834][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.967834][ T72] [ 130.981659][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 130.982223][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 130.982223][ T72] netdev_get_by_index+0x5e/0x80 [ 130.982223][ T72] fib6_nh_init+0x3d8/0x15b0 [ 130.982223][ T72] ip6_route_info_create+0xf18/0x17d0 [ 130.982223][ T72] addrconf_f6i_alloc+0x244/0x410 [ 130.982223][ T72] ipv6_add_addr+0x411/0x2000 [ 130.982223][ T72] inet6_addr_add+0x30e/0xa40 [ 130.982223][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 130.982223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.982223][ T72] netlink_rcv_skb+0x130/0x360 [ 130.982223][ T72] netlink_unicast+0x449/0x710 [ 130.982223][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.982223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.982223][ T72] ___sys_sendmsg+0xee/0x170 [ 130.982223][ T72] __sys_sendmsg+0xcd/0x170 [ 130.982223][ T72] do_syscall_64+0xc6/0x1e0 [ 130.982223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.982223][ T72] [ 130.985927][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 130.985927][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 130.985927][ T72] ipv6_find_idev+0x102/0x170 [ 130.985927][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 130.985927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.985927][ T72] netlink_rcv_skb+0x130/0x360 [ 130.985927][ T72] netlink_unicast+0x449/0x710 [ 130.985927][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.985927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.985927][ T72] ___sys_sendmsg+0xee/0x170 [ 130.985927][ T72] __sys_sendmsg+0xcd/0x170 [ 130.985927][ T72] do_syscall_64+0xc6/0x1e0 [ 130.985927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.985927][ T72] [ 130.988772][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 130.988772][ T72] neigh_parms_alloc+0x1e5/0x510 [ 130.988772][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 130.988772][ T72] ipv6_find_idev+0x102/0x170 [ 130.988772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 130.988772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.988772][ T72] netlink_rcv_skb+0x130/0x360 [ 130.988772][ T72] netlink_unicast+0x449/0x710 [ 130.988772][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.988772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.988772][ T72] ___sys_sendmsg+0xee/0x170 [ 130.988772][ T72] __sys_sendmsg+0xcd/0x170 [ 130.988772][ T72] do_syscall_64+0xc6/0x1e0 [ 130.988772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.988772][ T72] [ 130.991919][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 130.992443][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 130.992443][ T72] netdev_get_by_index+0x5e/0x80 [ 130.992443][ T72] fib6_nh_init+0x3d8/0x15b0 [ 130.992443][ T72] ip6_route_info_create+0xf18/0x17d0 [ 130.992443][ T72] addrconf_f6i_alloc+0x244/0x410 [ 130.992443][ T72] ipv6_add_addr+0x411/0x2000 [ 130.992443][ T72] inet6_addr_add+0x30e/0xa40 [ 130.992443][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 130.992443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.992443][ T72] netlink_rcv_skb+0x130/0x360 [ 130.992443][ T72] netlink_unicast+0x449/0x710 [ 130.992443][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.992443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.992443][ T72] ___sys_sendmsg+0xee/0x170 [ 130.992443][ T72] __sys_sendmsg+0xcd/0x170 [ 130.992443][ T72] do_syscall_64+0xc6/0x1e0 [ 130.992443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.992443][ T72] [ 130.996141][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 130.996141][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 130.996141][ T72] ipv6_find_idev+0x102/0x170 [ 130.996141][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 130.996141][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.996141][ T72] netlink_rcv_skb+0x130/0x360 [ 130.996141][ T72] netlink_unicast+0x449/0x710 [ 130.996141][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.996141][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.996141][ T72] ___sys_sendmsg+0xee/0x170 [ 130.996141][ T72] __sys_sendmsg+0xcd/0x170 [ 130.996141][ T72] do_syscall_64+0xc6/0x1e0 [ 130.996141][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.996141][ T72] [ 130.998934][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 130.998934][ T72] neigh_parms_alloc+0x1e5/0x510 [ 130.998934][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 130.998934][ T72] ipv6_find_idev+0x102/0x170 [ 130.998934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 130.998934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 130.998934][ T72] netlink_rcv_skb+0x130/0x360 [ 130.998934][ T72] netlink_unicast+0x449/0x710 [ 130.998934][ T72] netlink_sendmsg+0x723/0xbe0 [ 130.998934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 130.998934][ T72] ___sys_sendmsg+0xee/0x170 [ 130.998934][ T72] __sys_sendmsg+0xcd/0x170 [ 130.998934][ T72] do_syscall_64+0xc6/0x1e0 [ 130.998934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 130.998934][ T72] [ 131.032380][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 131.033083][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 131.033083][ T72] netdev_get_by_index+0x5e/0x80 [ 131.033083][ T72] fib6_nh_init+0x3d8/0x15b0 [ 131.033083][ T72] ip6_route_info_create+0xf18/0x17d0 [ 131.033083][ T72] addrconf_f6i_alloc+0x244/0x410 [ 131.033083][ T72] ipv6_add_addr+0x411/0x2000 [ 131.033083][ T72] inet6_addr_add+0x30e/0xa40 [ 131.033083][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 131.033083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.033083][ T72] netlink_rcv_skb+0x130/0x360 [ 131.033083][ T72] netlink_unicast+0x449/0x710 [ 131.033083][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.033083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.033083][ T72] ___sys_sendmsg+0xee/0x170 [ 131.033083][ T72] __sys_sendmsg+0xcd/0x170 [ 131.033083][ T72] do_syscall_64+0xc6/0x1e0 [ 131.033083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.033083][ T72] [ 131.037499][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 131.037499][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 131.037499][ T72] ipv6_find_idev+0x102/0x170 [ 131.037499][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.037499][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.037499][ T72] netlink_rcv_skb+0x130/0x360 [ 131.037499][ T72] netlink_unicast+0x449/0x710 [ 131.037499][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.037499][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.037499][ T72] ___sys_sendmsg+0xee/0x170 [ 131.037499][ T72] __sys_sendmsg+0xcd/0x170 [ 131.037499][ T72] do_syscall_64+0xc6/0x1e0 [ 131.037499][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.037499][ T72] [ 131.041193][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 131.041193][ T72] neigh_parms_alloc+0x1e5/0x510 [ 131.041193][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 131.041193][ T72] ipv6_find_idev+0x102/0x170 [ 131.041193][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.041193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.041193][ T72] netlink_rcv_skb+0x130/0x360 [ 131.041193][ T72] netlink_unicast+0x449/0x710 [ 131.041193][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.041193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.041193][ T72] ___sys_sendmsg+0xee/0x170 [ 131.041193][ T72] __sys_sendmsg+0xcd/0x170 [ 131.041193][ T72] do_syscall_64+0xc6/0x1e0 [ 131.041193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.041193][ T72] [ 131.051837][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 131.052608][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 131.052608][ T72] netdev_get_by_index+0x5e/0x80 [ 131.052608][ T72] fib6_nh_init+0x3d8/0x15b0 [ 131.052608][ T72] ip6_route_info_create+0xf18/0x17d0 [ 131.052608][ T72] addrconf_f6i_alloc+0x244/0x410 [ 131.052608][ T72] ipv6_add_addr+0x411/0x2000 [ 131.052608][ T72] inet6_addr_add+0x30e/0xa40 [ 131.052608][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 131.052608][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.052608][ T72] netlink_rcv_skb+0x130/0x360 [ 131.052608][ T72] netlink_unicast+0x449/0x710 [ 131.052608][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.052608][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.052608][ T72] ___sys_sendmsg+0xee/0x170 [ 131.052608][ T72] __sys_sendmsg+0xcd/0x170 [ 131.052608][ T72] do_syscall_64+0xc6/0x1e0 [ 131.052608][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.052608][ T72] [ 131.074935][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 131.074935][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 131.074935][ T72] ipv6_find_idev+0x102/0x170 [ 131.074935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.074935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.074935][ T72] netlink_rcv_skb+0x130/0x360 [ 131.074935][ T72] netlink_unicast+0x449/0x710 [ 131.074935][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.074935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.074935][ T72] ___sys_sendmsg+0xee/0x170 [ 131.074935][ T72] __sys_sendmsg+0xcd/0x170 [ 131.074935][ T72] do_syscall_64+0xc6/0x1e0 [ 131.074935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.074935][ T72] [ 131.078578][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 131.078578][ T72] neigh_parms_alloc+0x1e5/0x510 [ 131.078578][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 131.078578][ T72] ipv6_find_idev+0x102/0x170 [ 131.078578][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.078578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.078578][ T72] netlink_rcv_skb+0x130/0x360 [ 131.078578][ T72] netlink_unicast+0x449/0x710 [ 131.078578][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.078578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.078578][ T72] ___sys_sendmsg+0xee/0x170 [ 131.078578][ T72] __sys_sendmsg+0xcd/0x170 [ 131.078578][ T72] do_syscall_64+0xc6/0x1e0 [ 131.078578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.078578][ T72] [ 131.082932][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 131.083655][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 131.083655][ T72] netdev_get_by_index+0x5e/0x80 [ 131.083655][ T72] fib6_nh_init+0x3d8/0x15b0 [ 131.083655][ T72] ip6_route_info_create+0xf18/0x17d0 [ 131.083655][ T72] addrconf_f6i_alloc+0x244/0x410 [ 131.083655][ T72] ipv6_add_addr+0x411/0x2000 [ 131.083655][ T72] inet6_addr_add+0x30e/0xa40 [ 131.083655][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 131.083655][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.083655][ T72] netlink_rcv_skb+0x130/0x360 [ 131.083655][ T72] netlink_unicast+0x449/0x710 [ 131.083655][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.083655][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.083655][ T72] ___sys_sendmsg+0xee/0x170 [ 131.083655][ T72] __sys_sendmsg+0xcd/0x170 [ 131.083655][ T72] do_syscall_64+0xc6/0x1e0 [ 131.083655][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.083655][ T72] [ 131.088275][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 131.088275][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 131.088275][ T72] ipv6_find_idev+0x102/0x170 [ 131.088275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.088275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.088275][ T72] netlink_rcv_skb+0x130/0x360 [ 131.088275][ T72] netlink_unicast+0x449/0x710 [ 131.088275][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.088275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.088275][ T72] ___sys_sendmsg+0xee/0x170 [ 131.088275][ T72] __sys_sendmsg+0xcd/0x170 [ 131.088275][ T72] do_syscall_64+0xc6/0x1e0 [ 131.088275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.088275][ T72] [ 131.091967][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 131.091967][ T72] neigh_parms_alloc+0x1e5/0x510 [ 131.091967][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 131.091967][ T72] ipv6_find_idev+0x102/0x170 [ 131.091967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.091967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.091967][ T72] netlink_rcv_skb+0x130/0x360 [ 131.091967][ T72] netlink_unicast+0x449/0x710 [ 131.091967][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.091967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.091967][ T72] ___sys_sendmsg+0xee/0x170 [ 131.091967][ T72] __sys_sendmsg+0xcd/0x170 [ 131.091967][ T72] do_syscall_64+0xc6/0x1e0 [ 131.091967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.091967][ T72] [ 131.095958][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 131.096642][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 131.096642][ T72] netdev_get_by_index+0x5e/0x80 [ 131.096642][ T72] fib6_nh_init+0x3d8/0x15b0 [ 131.096642][ T72] ip6_route_info_create+0xf18/0x17d0 [ 131.096642][ T72] addrconf_f6i_alloc+0x244/0x410 [ 131.096642][ T72] ipv6_add_addr+0x411/0x2000 [ 131.096642][ T72] inet6_addr_add+0x30e/0xa40 [ 131.096642][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 131.096642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.096642][ T72] netlink_rcv_skb+0x130/0x360 [ 131.096642][ T72] netlink_unicast+0x449/0x710 [ 131.096642][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.096642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.096642][ T72] ___sys_sendmsg+0xee/0x170 [ 131.096642][ T72] __sys_sendmsg+0xcd/0x170 [ 131.096642][ T72] do_syscall_64+0xc6/0x1e0 [ 131.096642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.096642][ T72] [ 131.120770][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 131.120770][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 131.120770][ T72] ipv6_find_idev+0x102/0x170 [ 131.120770][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.120770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.120770][ T72] netlink_rcv_skb+0x130/0x360 [ 131.120770][ T72] netlink_unicast+0x449/0x710 [ 131.120770][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.120770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.120770][ T72] ___sys_sendmsg+0xee/0x170 [ 131.120770][ T72] __sys_sendmsg+0xcd/0x170 [ 131.120770][ T72] do_syscall_64+0xc6/0x1e0 [ 131.120770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.120770][ T72] [ 131.124142][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 131.124142][ T72] neigh_parms_alloc+0x1e5/0x510 [ 131.124142][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 131.124142][ T72] ipv6_find_idev+0x102/0x170 [ 131.124142][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.124142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.124142][ T72] netlink_rcv_skb+0x130/0x360 [ 131.124142][ T72] netlink_unicast+0x449/0x710 [ 131.124142][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.124142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.124142][ T72] ___sys_sendmsg+0xee/0x170 [ 131.124142][ T72] __sys_sendmsg+0xcd/0x170 [ 131.124142][ T72] do_syscall_64+0xc6/0x1e0 [ 131.124142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.124142][ T72] [ 131.128004][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 131.128651][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 131.128651][ T72] netdev_get_by_index+0x5e/0x80 [ 131.128651][ T72] fib6_nh_init+0x3d8/0x15b0 [ 131.128651][ T72] ip6_route_info_create+0xf18/0x17d0 [ 131.128651][ T72] addrconf_f6i_alloc+0x244/0x410 [ 131.128651][ T72] ipv6_add_addr+0x411/0x2000 [ 131.128651][ T72] inet6_addr_add+0x30e/0xa40 [ 131.128651][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 131.128651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.128651][ T72] netlink_rcv_skb+0x130/0x360 [ 131.128651][ T72] netlink_unicast+0x449/0x710 [ 131.128651][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.128651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.128651][ T72] ___sys_sendmsg+0xee/0x170 [ 131.128651][ T72] __sys_sendmsg+0xcd/0x170 [ 131.128651][ T72] do_syscall_64+0xc6/0x1e0 [ 131.128651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.128651][ T72] [ 131.132942][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 131.132942][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 131.132942][ T72] ipv6_find_idev+0x102/0x170 [ 131.132942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.132942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.132942][ T72] netlink_rcv_skb+0x130/0x360 [ 131.132942][ T72] netlink_unicast+0x449/0x710 [ 131.132942][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.132942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.132942][ T72] ___sys_sendmsg+0xee/0x170 [ 131.132942][ T72] __sys_sendmsg+0xcd/0x170 [ 131.132942][ T72] do_syscall_64+0xc6/0x1e0 [ 131.132942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.132942][ T72] [ 131.136115][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 131.136115][ T72] neigh_parms_alloc+0x1e5/0x510 [ 131.136115][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 131.136115][ T72] ipv6_find_idev+0x102/0x170 [ 131.136115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 131.136115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 131.136115][ T72] netlink_rcv_skb+0x130/0x360 [ 131.136115][ T72] netlink_unicast+0x449/0x710 [ 131.136115][ T72] netlink_sendmsg+0x723/0xbe0 [ 131.136115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 131.136115][ T72] ___sys_sendmsg+0xee/0x170 [ 131.136115][ T72] __sys_sendmsg+0xcd/0x170 [ 131.136115][ T72] do_syscall_64+0xc6/0x1e0 [ 131.136115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 131.136115][ T72] [ 141.391755][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 141.392173][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 141.392173][ T72] netdev_get_by_index+0x5e/0x80 [ 141.392173][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.392173][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.392173][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.392173][ T72] ipv6_add_addr+0x411/0x2000 [ 141.392173][ T72] inet6_addr_add+0x30e/0xa40 [ 141.392173][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.392173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.392173][ T72] netlink_rcv_skb+0x130/0x360 [ 141.392173][ T72] netlink_unicast+0x449/0x710 [ 141.392173][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.392173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.392173][ T72] ___sys_sendmsg+0xee/0x170 [ 141.392173][ T72] __sys_sendmsg+0xcd/0x170 [ 141.392173][ T72] do_syscall_64+0xc6/0x1e0 [ 141.392173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.392173][ T72] [ 141.394238][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 141.394238][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.394238][ T72] ipv6_find_idev+0x102/0x170 [ 141.394238][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.394238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.394238][ T72] netlink_rcv_skb+0x130/0x360 [ 141.394238][ T72] netlink_unicast+0x449/0x710 [ 141.394238][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.394238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.394238][ T72] ___sys_sendmsg+0xee/0x170 [ 141.394238][ T72] __sys_sendmsg+0xcd/0x170 [ 141.394238][ T72] do_syscall_64+0xc6/0x1e0 [ 141.394238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.394238][ T72] [ 141.395769][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 141.395769][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.395769][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.395769][ T72] ipv6_find_idev+0x102/0x170 [ 141.395769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.395769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.395769][ T72] netlink_rcv_skb+0x130/0x360 [ 141.395769][ T72] netlink_unicast+0x449/0x710 [ 141.395769][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.395769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.395769][ T72] ___sys_sendmsg+0xee/0x170 [ 141.395769][ T72] __sys_sendmsg+0xcd/0x170 [ 141.395769][ T72] do_syscall_64+0xc6/0x1e0 [ 141.395769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.395769][ T72] [ 141.397549][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 141.397837][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 141.397837][ T72] netdev_get_by_index+0x5e/0x80 [ 141.397837][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.397837][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.397837][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.397837][ T72] ipv6_add_addr+0x411/0x2000 [ 141.397837][ T72] inet6_addr_add+0x30e/0xa40 [ 141.397837][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.397837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.397837][ T72] netlink_rcv_skb+0x130/0x360 [ 141.397837][ T72] netlink_unicast+0x449/0x710 [ 141.397837][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.397837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.397837][ T72] ___sys_sendmsg+0xee/0x170 [ 141.397837][ T72] __sys_sendmsg+0xcd/0x170 [ 141.397837][ T72] do_syscall_64+0xc6/0x1e0 [ 141.397837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.397837][ T72] [ 141.399867][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 141.399867][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.399867][ T72] ipv6_find_idev+0x102/0x170 [ 141.399867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.399867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.399867][ T72] netlink_rcv_skb+0x130/0x360 [ 141.399867][ T72] netlink_unicast+0x449/0x710 [ 141.399867][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.399867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.399867][ T72] ___sys_sendmsg+0xee/0x170 [ 141.399867][ T72] __sys_sendmsg+0xcd/0x170 [ 141.399867][ T72] do_syscall_64+0xc6/0x1e0 [ 141.399867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.399867][ T72] [ 141.401478][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 141.401478][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.401478][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.401478][ T72] ipv6_find_idev+0x102/0x170 [ 141.401478][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.401478][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.401478][ T72] netlink_rcv_skb+0x130/0x360 [ 141.401478][ T72] netlink_unicast+0x449/0x710 [ 141.401478][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.401478][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.401478][ T72] ___sys_sendmsg+0xee/0x170 [ 141.401478][ T72] __sys_sendmsg+0xcd/0x170 [ 141.401478][ T72] do_syscall_64+0xc6/0x1e0 [ 141.401478][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.401478][ T72] [ 141.403197][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 141.403483][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 141.403483][ T72] netdev_get_by_index+0x5e/0x80 [ 141.403483][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.403483][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.403483][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.403483][ T72] ipv6_add_addr+0x411/0x2000 [ 141.403483][ T72] inet6_addr_add+0x30e/0xa40 [ 141.403483][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.403483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.403483][ T72] netlink_rcv_skb+0x130/0x360 [ 141.403483][ T72] netlink_unicast+0x449/0x710 [ 141.403483][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.403483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.403483][ T72] ___sys_sendmsg+0xee/0x170 [ 141.403483][ T72] __sys_sendmsg+0xcd/0x170 [ 141.403483][ T72] do_syscall_64+0xc6/0x1e0 [ 141.403483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.403483][ T72] [ 141.405515][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 141.405515][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.405515][ T72] ipv6_find_idev+0x102/0x170 [ 141.405515][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.405515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.405515][ T72] netlink_rcv_skb+0x130/0x360 [ 141.405515][ T72] netlink_unicast+0x449/0x710 [ 141.405515][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.405515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.405515][ T72] ___sys_sendmsg+0xee/0x170 [ 141.405515][ T72] __sys_sendmsg+0xcd/0x170 [ 141.405515][ T72] do_syscall_64+0xc6/0x1e0 [ 141.405515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.405515][ T72] [ 141.407053][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 141.407053][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.407053][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.407053][ T72] ipv6_find_idev+0x102/0x170 [ 141.407053][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.407053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.407053][ T72] netlink_rcv_skb+0x130/0x360 [ 141.407053][ T72] netlink_unicast+0x449/0x710 [ 141.407053][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.407053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.407053][ T72] ___sys_sendmsg+0xee/0x170 [ 141.407053][ T72] __sys_sendmsg+0xcd/0x170 [ 141.407053][ T72] do_syscall_64+0xc6/0x1e0 [ 141.407053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.407053][ T72] [ 141.408828][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 141.409099][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 141.409099][ T72] netdev_get_by_index+0x5e/0x80 [ 141.409099][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.409099][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.409099][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.409099][ T72] ipv6_add_addr+0x411/0x2000 [ 141.409099][ T72] inet6_addr_add+0x30e/0xa40 [ 141.409099][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.409099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.409099][ T72] netlink_rcv_skb+0x130/0x360 [ 141.409099][ T72] netlink_unicast+0x449/0x710 [ 141.409099][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.409099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.409099][ T72] ___sys_sendmsg+0xee/0x170 [ 141.409099][ T72] __sys_sendmsg+0xcd/0x170 [ 141.409099][ T72] do_syscall_64+0xc6/0x1e0 [ 141.409099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.409099][ T72] [ 141.411140][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 141.411140][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.411140][ T72] ipv6_find_idev+0x102/0x170 [ 141.411140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.411140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.411140][ T72] netlink_rcv_skb+0x130/0x360 [ 141.411140][ T72] netlink_unicast+0x449/0x710 [ 141.411140][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.411140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.411140][ T72] ___sys_sendmsg+0xee/0x170 [ 141.411140][ T72] __sys_sendmsg+0xcd/0x170 [ 141.411140][ T72] do_syscall_64+0xc6/0x1e0 [ 141.411140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.411140][ T72] [ 141.412735][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 141.412735][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.412735][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.412735][ T72] ipv6_find_idev+0x102/0x170 [ 141.412735][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.412735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.412735][ T72] netlink_rcv_skb+0x130/0x360 [ 141.412735][ T72] netlink_unicast+0x449/0x710 [ 141.412735][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.412735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.412735][ T72] ___sys_sendmsg+0xee/0x170 [ 141.412735][ T72] __sys_sendmsg+0xcd/0x170 [ 141.412735][ T72] do_syscall_64+0xc6/0x1e0 [ 141.412735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.412735][ T72] [ 141.414448][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 141.414721][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 141.414721][ T72] netdev_get_by_index+0x5e/0x80 [ 141.414721][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.414721][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.414721][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.414721][ T72] ipv6_add_addr+0x411/0x2000 [ 141.414721][ T72] inet6_addr_add+0x30e/0xa40 [ 141.414721][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.414721][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.414721][ T72] netlink_rcv_skb+0x130/0x360 [ 141.414721][ T72] netlink_unicast+0x449/0x710 [ 141.414721][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.414721][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.414721][ T72] ___sys_sendmsg+0xee/0x170 [ 141.414721][ T72] __sys_sendmsg+0xcd/0x170 [ 141.414721][ T72] do_syscall_64+0xc6/0x1e0 [ 141.414721][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.414721][ T72] [ 141.416772][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 141.416772][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.416772][ T72] ipv6_find_idev+0x102/0x170 [ 141.416772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.416772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.416772][ T72] netlink_rcv_skb+0x130/0x360 [ 141.416772][ T72] netlink_unicast+0x449/0x710 [ 141.416772][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.416772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.416772][ T72] ___sys_sendmsg+0xee/0x170 [ 141.416772][ T72] __sys_sendmsg+0xcd/0x170 [ 141.416772][ T72] do_syscall_64+0xc6/0x1e0 [ 141.416772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.416772][ T72] [ 141.418317][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 141.418317][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.418317][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.418317][ T72] ipv6_find_idev+0x102/0x170 [ 141.418317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.418317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.418317][ T72] netlink_rcv_skb+0x130/0x360 [ 141.418317][ T72] netlink_unicast+0x449/0x710 [ 141.418317][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.418317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.418317][ T72] ___sys_sendmsg+0xee/0x170 [ 141.418317][ T72] __sys_sendmsg+0xcd/0x170 [ 141.418317][ T72] do_syscall_64+0xc6/0x1e0 [ 141.418317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.418317][ T72] [ 141.420216][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 141.420524][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 141.420524][ T72] netdev_get_by_index+0x5e/0x80 [ 141.420524][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.420524][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.420524][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.420524][ T72] ipv6_add_addr+0x411/0x2000 [ 141.420524][ T72] inet6_addr_add+0x30e/0xa40 [ 141.420524][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.420524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.420524][ T72] netlink_rcv_skb+0x130/0x360 [ 141.420524][ T72] netlink_unicast+0x449/0x710 [ 141.420524][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.420524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.420524][ T72] ___sys_sendmsg+0xee/0x170 [ 141.420524][ T72] __sys_sendmsg+0xcd/0x170 [ 141.420524][ T72] do_syscall_64+0xc6/0x1e0 [ 141.420524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.420524][ T72] [ 141.422776][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 141.422776][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.422776][ T72] ipv6_find_idev+0x102/0x170 [ 141.422776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.422776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.422776][ T72] netlink_rcv_skb+0x130/0x360 [ 141.422776][ T72] netlink_unicast+0x449/0x710 [ 141.422776][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.422776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.422776][ T72] ___sys_sendmsg+0xee/0x170 [ 141.422776][ T72] __sys_sendmsg+0xcd/0x170 [ 141.422776][ T72] do_syscall_64+0xc6/0x1e0 [ 141.422776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.422776][ T72] [ 141.424491][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 141.424491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.424491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.424491][ T72] ipv6_find_idev+0x102/0x170 [ 141.424491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.424491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.424491][ T72] netlink_rcv_skb+0x130/0x360 [ 141.424491][ T72] netlink_unicast+0x449/0x710 [ 141.424491][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.424491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.424491][ T72] ___sys_sendmsg+0xee/0x170 [ 141.424491][ T72] __sys_sendmsg+0xcd/0x170 [ 141.424491][ T72] do_syscall_64+0xc6/0x1e0 [ 141.424491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.424491][ T72] [ 141.426426][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 141.426705][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 141.426705][ T72] netdev_get_by_index+0x5e/0x80 [ 141.426705][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.426705][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.426705][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.426705][ T72] ipv6_add_addr+0x411/0x2000 [ 141.426705][ T72] inet6_addr_add+0x30e/0xa40 [ 141.426705][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.426705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.426705][ T72] netlink_rcv_skb+0x130/0x360 [ 141.426705][ T72] netlink_unicast+0x449/0x710 [ 141.426705][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.426705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.426705][ T72] ___sys_sendmsg+0xee/0x170 [ 141.426705][ T72] __sys_sendmsg+0xcd/0x170 [ 141.426705][ T72] do_syscall_64+0xc6/0x1e0 [ 141.426705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.426705][ T72] [ 141.428800][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 141.428800][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.428800][ T72] ipv6_find_idev+0x102/0x170 [ 141.428800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.428800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.428800][ T72] netlink_rcv_skb+0x130/0x360 [ 141.428800][ T72] netlink_unicast+0x449/0x710 [ 141.428800][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.428800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.428800][ T72] ___sys_sendmsg+0xee/0x170 [ 141.428800][ T72] __sys_sendmsg+0xcd/0x170 [ 141.428800][ T72] do_syscall_64+0xc6/0x1e0 [ 141.428800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.428800][ T72] [ 141.430510][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 141.430510][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.430510][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.430510][ T72] ipv6_find_idev+0x102/0x170 [ 141.430510][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.430510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.430510][ T72] netlink_rcv_skb+0x130/0x360 [ 141.430510][ T72] netlink_unicast+0x449/0x710 [ 141.430510][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.430510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.430510][ T72] ___sys_sendmsg+0xee/0x170 [ 141.430510][ T72] __sys_sendmsg+0xcd/0x170 [ 141.430510][ T72] do_syscall_64+0xc6/0x1e0 [ 141.430510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.430510][ T72] [ 141.432770][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 141.433512][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 141.433512][ T72] netdev_get_by_index+0x5e/0x80 [ 141.433512][ T72] fib6_nh_init+0x3d8/0x15b0 [ 141.433512][ T72] ip6_route_info_create+0xf18/0x17d0 [ 141.433512][ T72] addrconf_f6i_alloc+0x244/0x410 [ 141.433512][ T72] ipv6_add_addr+0x411/0x2000 [ 141.433512][ T72] inet6_addr_add+0x30e/0xa40 [ 141.433512][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 141.433512][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.433512][ T72] netlink_rcv_skb+0x130/0x360 [ 141.433512][ T72] netlink_unicast+0x449/0x710 [ 141.433512][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.433512][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.433512][ T72] ___sys_sendmsg+0xee/0x170 [ 141.433512][ T72] __sys_sendmsg+0xcd/0x170 [ 141.433512][ T72] do_syscall_64+0xc6/0x1e0 [ 141.433512][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.433512][ T72] [ 141.435507][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 141.435507][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 141.435507][ T72] ipv6_find_idev+0x102/0x170 [ 141.435507][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.435507][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.435507][ T72] netlink_rcv_skb+0x130/0x360 [ 141.435507][ T72] netlink_unicast+0x449/0x710 [ 141.435507][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.435507][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.435507][ T72] ___sys_sendmsg+0xee/0x170 [ 141.435507][ T72] __sys_sendmsg+0xcd/0x170 [ 141.435507][ T72] do_syscall_64+0xc6/0x1e0 [ 141.435507][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.435507][ T72] [ 141.437020][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 141.437020][ T72] neigh_parms_alloc+0x1e5/0x510 [ 141.437020][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 141.437020][ T72] ipv6_find_idev+0x102/0x170 [ 141.437020][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 141.437020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 141.437020][ T72] netlink_rcv_skb+0x130/0x360 [ 141.437020][ T72] netlink_unicast+0x449/0x710 [ 141.437020][ T72] netlink_sendmsg+0x723/0xbe0 [ 141.437020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 141.437020][ T72] ___sys_sendmsg+0xee/0x170 [ 141.437020][ T72] __sys_sendmsg+0xcd/0x170 [ 141.437020][ T72] do_syscall_64+0xc6/0x1e0 [ 141.437020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 141.437020][ T72] [ 151.598759][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 151.599090][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 151.599090][ T72] netdev_get_by_index+0x5e/0x80 [ 151.599090][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.599090][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.599090][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.599090][ T72] ipv6_add_addr+0x411/0x2000 [ 151.599090][ T72] inet6_addr_add+0x30e/0xa40 [ 151.599090][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.599090][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.599090][ T72] netlink_rcv_skb+0x130/0x360 [ 151.599090][ T72] netlink_unicast+0x449/0x710 [ 151.599090][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.599090][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.599090][ T72] ___sys_sendmsg+0xee/0x170 [ 151.599090][ T72] __sys_sendmsg+0xcd/0x170 [ 151.599090][ T72] do_syscall_64+0xc6/0x1e0 [ 151.599090][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.599090][ T72] [ 151.601160][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 151.601160][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.601160][ T72] ipv6_find_idev+0x102/0x170 [ 151.601160][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.601160][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.601160][ T72] netlink_rcv_skb+0x130/0x360 [ 151.601160][ T72] netlink_unicast+0x449/0x710 [ 151.601160][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.601160][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.601160][ T72] ___sys_sendmsg+0xee/0x170 [ 151.601160][ T72] __sys_sendmsg+0xcd/0x170 [ 151.601160][ T72] do_syscall_64+0xc6/0x1e0 [ 151.601160][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.601160][ T72] [ 151.602732][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 151.602732][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.602732][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.602732][ T72] ipv6_find_idev+0x102/0x170 [ 151.602732][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.602732][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.602732][ T72] netlink_rcv_skb+0x130/0x360 [ 151.602732][ T72] netlink_unicast+0x449/0x710 [ 151.602732][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.602732][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.602732][ T72] ___sys_sendmsg+0xee/0x170 [ 151.602732][ T72] __sys_sendmsg+0xcd/0x170 [ 151.602732][ T72] do_syscall_64+0xc6/0x1e0 [ 151.602732][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.602732][ T72] [ 151.604408][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 151.604681][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 151.604681][ T72] netdev_get_by_index+0x5e/0x80 [ 151.604681][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.604681][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.604681][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.604681][ T72] ipv6_add_addr+0x411/0x2000 [ 151.604681][ T72] inet6_addr_add+0x30e/0xa40 [ 151.604681][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.604681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.604681][ T72] netlink_rcv_skb+0x130/0x360 [ 151.604681][ T72] netlink_unicast+0x449/0x710 [ 151.604681][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.604681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.604681][ T72] ___sys_sendmsg+0xee/0x170 [ 151.604681][ T72] __sys_sendmsg+0xcd/0x170 [ 151.604681][ T72] do_syscall_64+0xc6/0x1e0 [ 151.604681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.604681][ T72] [ 151.606725][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 151.606725][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.606725][ T72] ipv6_find_idev+0x102/0x170 [ 151.606725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.606725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.606725][ T72] netlink_rcv_skb+0x130/0x360 [ 151.606725][ T72] netlink_unicast+0x449/0x710 [ 151.606725][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.606725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.606725][ T72] ___sys_sendmsg+0xee/0x170 [ 151.606725][ T72] __sys_sendmsg+0xcd/0x170 [ 151.606725][ T72] do_syscall_64+0xc6/0x1e0 [ 151.606725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.606725][ T72] [ 151.608293][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 151.608293][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.608293][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.608293][ T72] ipv6_find_idev+0x102/0x170 [ 151.608293][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.608293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.608293][ T72] netlink_rcv_skb+0x130/0x360 [ 151.608293][ T72] netlink_unicast+0x449/0x710 [ 151.608293][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.608293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.608293][ T72] ___sys_sendmsg+0xee/0x170 [ 151.608293][ T72] __sys_sendmsg+0xcd/0x170 [ 151.608293][ T72] do_syscall_64+0xc6/0x1e0 [ 151.608293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.608293][ T72] [ 151.609969][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 151.610233][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 151.610233][ T72] netdev_get_by_index+0x5e/0x80 [ 151.610233][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.610233][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.610233][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.610233][ T72] ipv6_add_addr+0x411/0x2000 [ 151.610233][ T72] inet6_addr_add+0x30e/0xa40 [ 151.610233][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.610233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.610233][ T72] netlink_rcv_skb+0x130/0x360 [ 151.610233][ T72] netlink_unicast+0x449/0x710 [ 151.610233][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.610233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.610233][ T72] ___sys_sendmsg+0xee/0x170 [ 151.610233][ T72] __sys_sendmsg+0xcd/0x170 [ 151.610233][ T72] do_syscall_64+0xc6/0x1e0 [ 151.610233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.610233][ T72] [ 151.612367][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 151.612367][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.612367][ T72] ipv6_find_idev+0x102/0x170 [ 151.612367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.612367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.612367][ T72] netlink_rcv_skb+0x130/0x360 [ 151.612367][ T72] netlink_unicast+0x449/0x710 [ 151.612367][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.612367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.612367][ T72] ___sys_sendmsg+0xee/0x170 [ 151.612367][ T72] __sys_sendmsg+0xcd/0x170 [ 151.612367][ T72] do_syscall_64+0xc6/0x1e0 [ 151.612367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.612367][ T72] [ 151.613897][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 151.613897][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.613897][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.613897][ T72] ipv6_find_idev+0x102/0x170 [ 151.613897][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.613897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.613897][ T72] netlink_rcv_skb+0x130/0x360 [ 151.613897][ T72] netlink_unicast+0x449/0x710 [ 151.613897][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.613897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.613897][ T72] ___sys_sendmsg+0xee/0x170 [ 151.613897][ T72] __sys_sendmsg+0xcd/0x170 [ 151.613897][ T72] do_syscall_64+0xc6/0x1e0 [ 151.613897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.613897][ T72] [ 151.615697][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 151.615986][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 151.615986][ T72] netdev_get_by_index+0x5e/0x80 [ 151.615986][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.615986][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.615986][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.615986][ T72] ipv6_add_addr+0x411/0x2000 [ 151.615986][ T72] inet6_addr_add+0x30e/0xa40 [ 151.615986][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.615986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.615986][ T72] netlink_rcv_skb+0x130/0x360 [ 151.615986][ T72] netlink_unicast+0x449/0x710 [ 151.615986][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.615986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.615986][ T72] ___sys_sendmsg+0xee/0x170 [ 151.615986][ T72] __sys_sendmsg+0xcd/0x170 [ 151.615986][ T72] do_syscall_64+0xc6/0x1e0 [ 151.615986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.615986][ T72] [ 151.618010][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 151.618010][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.618010][ T72] ipv6_find_idev+0x102/0x170 [ 151.618010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.618010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.618010][ T72] netlink_rcv_skb+0x130/0x360 [ 151.618010][ T72] netlink_unicast+0x449/0x710 [ 151.618010][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.618010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.618010][ T72] ___sys_sendmsg+0xee/0x170 [ 151.618010][ T72] __sys_sendmsg+0xcd/0x170 [ 151.618010][ T72] do_syscall_64+0xc6/0x1e0 [ 151.618010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.618010][ T72] [ 151.619664][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 151.619664][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.619664][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.619664][ T72] ipv6_find_idev+0x102/0x170 [ 151.619664][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.619664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.619664][ T72] netlink_rcv_skb+0x130/0x360 [ 151.619664][ T72] netlink_unicast+0x449/0x710 [ 151.619664][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.619664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.619664][ T72] ___sys_sendmsg+0xee/0x170 [ 151.619664][ T72] __sys_sendmsg+0xcd/0x170 [ 151.619664][ T72] do_syscall_64+0xc6/0x1e0 [ 151.619664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.619664][ T72] [ 151.621679][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 151.622399][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 151.622399][ T72] netdev_get_by_index+0x5e/0x80 [ 151.622399][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.622399][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.622399][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.622399][ T72] ipv6_add_addr+0x411/0x2000 [ 151.622399][ T72] inet6_addr_add+0x30e/0xa40 [ 151.622399][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.622399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.622399][ T72] netlink_rcv_skb+0x130/0x360 [ 151.622399][ T72] netlink_unicast+0x449/0x710 [ 151.622399][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.622399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.622399][ T72] ___sys_sendmsg+0xee/0x170 [ 151.622399][ T72] __sys_sendmsg+0xcd/0x170 [ 151.622399][ T72] do_syscall_64+0xc6/0x1e0 [ 151.622399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.622399][ T72] [ 151.624413][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 151.624413][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.624413][ T72] ipv6_find_idev+0x102/0x170 [ 151.624413][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.624413][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.624413][ T72] netlink_rcv_skb+0x130/0x360 [ 151.624413][ T72] netlink_unicast+0x449/0x710 [ 151.624413][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.624413][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.624413][ T72] ___sys_sendmsg+0xee/0x170 [ 151.624413][ T72] __sys_sendmsg+0xcd/0x170 [ 151.624413][ T72] do_syscall_64+0xc6/0x1e0 [ 151.624413][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.624413][ T72] [ 151.625985][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 151.625985][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.625985][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.625985][ T72] ipv6_find_idev+0x102/0x170 [ 151.625985][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.625985][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.625985][ T72] netlink_rcv_skb+0x130/0x360 [ 151.625985][ T72] netlink_unicast+0x449/0x710 [ 151.625985][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.625985][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.625985][ T72] ___sys_sendmsg+0xee/0x170 [ 151.625985][ T72] __sys_sendmsg+0xcd/0x170 [ 151.625985][ T72] do_syscall_64+0xc6/0x1e0 [ 151.625985][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.625985][ T72] [ 151.627793][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 151.628059][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 151.628059][ T72] netdev_get_by_index+0x5e/0x80 [ 151.628059][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.628059][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.628059][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.628059][ T72] ipv6_add_addr+0x411/0x2000 [ 151.628059][ T72] inet6_addr_add+0x30e/0xa40 [ 151.628059][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.628059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.628059][ T72] netlink_rcv_skb+0x130/0x360 [ 151.628059][ T72] netlink_unicast+0x449/0x710 [ 151.628059][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.628059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.628059][ T72] ___sys_sendmsg+0xee/0x170 [ 151.628059][ T72] __sys_sendmsg+0xcd/0x170 [ 151.628059][ T72] do_syscall_64+0xc6/0x1e0 [ 151.628059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.628059][ T72] [ 151.630417][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 151.630417][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.630417][ T72] ipv6_find_idev+0x102/0x170 [ 151.630417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.630417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.630417][ T72] netlink_rcv_skb+0x130/0x360 [ 151.630417][ T72] netlink_unicast+0x449/0x710 [ 151.630417][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.630417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.630417][ T72] ___sys_sendmsg+0xee/0x170 [ 151.630417][ T72] __sys_sendmsg+0xcd/0x170 [ 151.630417][ T72] do_syscall_64+0xc6/0x1e0 [ 151.630417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.630417][ T72] [ 151.632120][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 151.632120][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.632120][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.632120][ T72] ipv6_find_idev+0x102/0x170 [ 151.632120][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.632120][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.632120][ T72] netlink_rcv_skb+0x130/0x360 [ 151.632120][ T72] netlink_unicast+0x449/0x710 [ 151.632120][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.632120][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.632120][ T72] ___sys_sendmsg+0xee/0x170 [ 151.632120][ T72] __sys_sendmsg+0xcd/0x170 [ 151.632120][ T72] do_syscall_64+0xc6/0x1e0 [ 151.632120][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.632120][ T72] [ 151.634075][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 151.634425][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 151.634425][ T72] netdev_get_by_index+0x5e/0x80 [ 151.634425][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.634425][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.634425][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.634425][ T72] ipv6_add_addr+0x411/0x2000 [ 151.634425][ T72] inet6_addr_add+0x30e/0xa40 [ 151.634425][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.634425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.634425][ T72] netlink_rcv_skb+0x130/0x360 [ 151.634425][ T72] netlink_unicast+0x449/0x710 [ 151.634425][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.634425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.634425][ T72] ___sys_sendmsg+0xee/0x170 [ 151.634425][ T72] __sys_sendmsg+0xcd/0x170 [ 151.634425][ T72] do_syscall_64+0xc6/0x1e0 [ 151.634425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.634425][ T72] [ 151.636489][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 151.636489][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.636489][ T72] ipv6_find_idev+0x102/0x170 [ 151.636489][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.636489][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.636489][ T72] netlink_rcv_skb+0x130/0x360 [ 151.636489][ T72] netlink_unicast+0x449/0x710 [ 151.636489][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.636489][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.636489][ T72] ___sys_sendmsg+0xee/0x170 [ 151.636489][ T72] __sys_sendmsg+0xcd/0x170 [ 151.636489][ T72] do_syscall_64+0xc6/0x1e0 [ 151.636489][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.636489][ T72] [ 151.638225][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 151.638225][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.638225][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.638225][ T72] ipv6_find_idev+0x102/0x170 [ 151.638225][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.638225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.638225][ T72] netlink_rcv_skb+0x130/0x360 [ 151.638225][ T72] netlink_unicast+0x449/0x710 [ 151.638225][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.638225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.638225][ T72] ___sys_sendmsg+0xee/0x170 [ 151.638225][ T72] __sys_sendmsg+0xcd/0x170 [ 151.638225][ T72] do_syscall_64+0xc6/0x1e0 [ 151.638225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.638225][ T72] [ 151.640147][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 151.640429][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 151.640429][ T72] netdev_get_by_index+0x5e/0x80 [ 151.640429][ T72] fib6_nh_init+0x3d8/0x15b0 [ 151.640429][ T72] ip6_route_info_create+0xf18/0x17d0 [ 151.640429][ T72] addrconf_f6i_alloc+0x244/0x410 [ 151.640429][ T72] ipv6_add_addr+0x411/0x2000 [ 151.640429][ T72] inet6_addr_add+0x30e/0xa40 [ 151.640429][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 151.640429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.640429][ T72] netlink_rcv_skb+0x130/0x360 [ 151.640429][ T72] netlink_unicast+0x449/0x710 [ 151.640429][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.640429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.640429][ T72] ___sys_sendmsg+0xee/0x170 [ 151.640429][ T72] __sys_sendmsg+0xcd/0x170 [ 151.640429][ T72] do_syscall_64+0xc6/0x1e0 [ 151.640429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.640429][ T72] [ 151.642644][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 151.642644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 151.642644][ T72] ipv6_find_idev+0x102/0x170 [ 151.642644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.642644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.642644][ T72] netlink_rcv_skb+0x130/0x360 [ 151.642644][ T72] netlink_unicast+0x449/0x710 [ 151.642644][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.642644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.642644][ T72] ___sys_sendmsg+0xee/0x170 [ 151.642644][ T72] __sys_sendmsg+0xcd/0x170 [ 151.642644][ T72] do_syscall_64+0xc6/0x1e0 [ 151.642644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.642644][ T72] [ 151.644331][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 151.644331][ T72] neigh_parms_alloc+0x1e5/0x510 [ 151.644331][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 151.644331][ T72] ipv6_find_idev+0x102/0x170 [ 151.644331][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 151.644331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 151.644331][ T72] netlink_rcv_skb+0x130/0x360 [ 151.644331][ T72] netlink_unicast+0x449/0x710 [ 151.644331][ T72] netlink_sendmsg+0x723/0xbe0 [ 151.644331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 151.644331][ T72] ___sys_sendmsg+0xee/0x170 [ 151.644331][ T72] __sys_sendmsg+0xcd/0x170 [ 151.644331][ T72] do_syscall_64+0xc6/0x1e0 [ 151.644331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 151.644331][ T72] [ 161.830849][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 161.831191][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 161.831191][ T72] netdev_get_by_index+0x5e/0x80 [ 161.831191][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.831191][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.831191][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.831191][ T72] ipv6_add_addr+0x411/0x2000 [ 161.831191][ T72] inet6_addr_add+0x30e/0xa40 [ 161.831191][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.831191][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.831191][ T72] netlink_rcv_skb+0x130/0x360 [ 161.831191][ T72] netlink_unicast+0x449/0x710 [ 161.831191][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.831191][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.831191][ T72] ___sys_sendmsg+0xee/0x170 [ 161.831191][ T72] __sys_sendmsg+0xcd/0x170 [ 161.831191][ T72] do_syscall_64+0xc6/0x1e0 [ 161.831191][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.831191][ T72] [ 161.833190][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 161.833190][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.833190][ T72] ipv6_find_idev+0x102/0x170 [ 161.833190][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.833190][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.833190][ T72] netlink_rcv_skb+0x130/0x360 [ 161.833190][ T72] netlink_unicast+0x449/0x710 [ 161.833190][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.833190][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.833190][ T72] ___sys_sendmsg+0xee/0x170 [ 161.833190][ T72] __sys_sendmsg+0xcd/0x170 [ 161.833190][ T72] do_syscall_64+0xc6/0x1e0 [ 161.833190][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.833190][ T72] [ 161.834744][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 161.834744][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.834744][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.834744][ T72] ipv6_find_idev+0x102/0x170 [ 161.834744][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.834744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.834744][ T72] netlink_rcv_skb+0x130/0x360 [ 161.834744][ T72] netlink_unicast+0x449/0x710 [ 161.834744][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.834744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.834744][ T72] ___sys_sendmsg+0xee/0x170 [ 161.834744][ T72] __sys_sendmsg+0xcd/0x170 [ 161.834744][ T72] do_syscall_64+0xc6/0x1e0 [ 161.834744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.834744][ T72] [ 161.836428][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 161.836699][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 161.836699][ T72] netdev_get_by_index+0x5e/0x80 [ 161.836699][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.836699][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.836699][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.836699][ T72] ipv6_add_addr+0x411/0x2000 [ 161.836699][ T72] inet6_addr_add+0x30e/0xa40 [ 161.836699][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.836699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.836699][ T72] netlink_rcv_skb+0x130/0x360 [ 161.836699][ T72] netlink_unicast+0x449/0x710 [ 161.836699][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.836699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.836699][ T72] ___sys_sendmsg+0xee/0x170 [ 161.836699][ T72] __sys_sendmsg+0xcd/0x170 [ 161.836699][ T72] do_syscall_64+0xc6/0x1e0 [ 161.836699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.836699][ T72] [ 161.838693][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 161.838693][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.838693][ T72] ipv6_find_idev+0x102/0x170 [ 161.838693][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.838693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.838693][ T72] netlink_rcv_skb+0x130/0x360 [ 161.838693][ T72] netlink_unicast+0x449/0x710 [ 161.838693][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.838693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.838693][ T72] ___sys_sendmsg+0xee/0x170 [ 161.838693][ T72] __sys_sendmsg+0xcd/0x170 [ 161.838693][ T72] do_syscall_64+0xc6/0x1e0 [ 161.838693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.838693][ T72] [ 161.840237][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 161.840237][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.840237][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.840237][ T72] ipv6_find_idev+0x102/0x170 [ 161.840237][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.840237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.840237][ T72] netlink_rcv_skb+0x130/0x360 [ 161.840237][ T72] netlink_unicast+0x449/0x710 [ 161.840237][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.840237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.840237][ T72] ___sys_sendmsg+0xee/0x170 [ 161.840237][ T72] __sys_sendmsg+0xcd/0x170 [ 161.840237][ T72] do_syscall_64+0xc6/0x1e0 [ 161.840237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.840237][ T72] [ 161.841931][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 161.842213][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 161.842213][ T72] netdev_get_by_index+0x5e/0x80 [ 161.842213][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.842213][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.842213][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.842213][ T72] ipv6_add_addr+0x411/0x2000 [ 161.842213][ T72] inet6_addr_add+0x30e/0xa40 [ 161.842213][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.842213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.842213][ T72] netlink_rcv_skb+0x130/0x360 [ 161.842213][ T72] netlink_unicast+0x449/0x710 [ 161.842213][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.842213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.842213][ T72] ___sys_sendmsg+0xee/0x170 [ 161.842213][ T72] __sys_sendmsg+0xcd/0x170 [ 161.842213][ T72] do_syscall_64+0xc6/0x1e0 [ 161.842213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.842213][ T72] [ 161.844196][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 161.844196][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.844196][ T72] ipv6_find_idev+0x102/0x170 [ 161.844196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.844196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.844196][ T72] netlink_rcv_skb+0x130/0x360 [ 161.844196][ T72] netlink_unicast+0x449/0x710 [ 161.844196][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.844196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.844196][ T72] ___sys_sendmsg+0xee/0x170 [ 161.844196][ T72] __sys_sendmsg+0xcd/0x170 [ 161.844196][ T72] do_syscall_64+0xc6/0x1e0 [ 161.844196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.844196][ T72] [ 161.845743][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 161.845743][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.845743][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.845743][ T72] ipv6_find_idev+0x102/0x170 [ 161.845743][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.845743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.845743][ T72] netlink_rcv_skb+0x130/0x360 [ 161.845743][ T72] netlink_unicast+0x449/0x710 [ 161.845743][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.845743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.845743][ T72] ___sys_sendmsg+0xee/0x170 [ 161.845743][ T72] __sys_sendmsg+0xcd/0x170 [ 161.845743][ T72] do_syscall_64+0xc6/0x1e0 [ 161.845743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.845743][ T72] [ 161.847685][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 161.847963][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 161.847963][ T72] netdev_get_by_index+0x5e/0x80 [ 161.847963][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.847963][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.847963][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.847963][ T72] ipv6_add_addr+0x411/0x2000 [ 161.847963][ T72] inet6_addr_add+0x30e/0xa40 [ 161.847963][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.847963][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.847963][ T72] netlink_rcv_skb+0x130/0x360 [ 161.847963][ T72] netlink_unicast+0x449/0x710 [ 161.847963][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.847963][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.847963][ T72] ___sys_sendmsg+0xee/0x170 [ 161.847963][ T72] __sys_sendmsg+0xcd/0x170 [ 161.847963][ T72] do_syscall_64+0xc6/0x1e0 [ 161.847963][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.847963][ T72] [ 161.850149][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 161.850149][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.850149][ T72] ipv6_find_idev+0x102/0x170 [ 161.850149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.850149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.850149][ T72] netlink_rcv_skb+0x130/0x360 [ 161.850149][ T72] netlink_unicast+0x449/0x710 [ 161.850149][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.850149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.850149][ T72] ___sys_sendmsg+0xee/0x170 [ 161.850149][ T72] __sys_sendmsg+0xcd/0x170 [ 161.850149][ T72] do_syscall_64+0xc6/0x1e0 [ 161.850149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.850149][ T72] [ 161.851897][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 161.851897][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.851897][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.851897][ T72] ipv6_find_idev+0x102/0x170 [ 161.851897][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.851897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.851897][ T72] netlink_rcv_skb+0x130/0x360 [ 161.851897][ T72] netlink_unicast+0x449/0x710 [ 161.851897][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.851897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.851897][ T72] ___sys_sendmsg+0xee/0x170 [ 161.851897][ T72] __sys_sendmsg+0xcd/0x170 [ 161.851897][ T72] do_syscall_64+0xc6/0x1e0 [ 161.851897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.851897][ T72] [ 161.853800][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 161.854123][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 161.854123][ T72] netdev_get_by_index+0x5e/0x80 [ 161.854123][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.854123][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.854123][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.854123][ T72] ipv6_add_addr+0x411/0x2000 [ 161.854123][ T72] inet6_addr_add+0x30e/0xa40 [ 161.854123][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.854123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.854123][ T72] netlink_rcv_skb+0x130/0x360 [ 161.854123][ T72] netlink_unicast+0x449/0x710 [ 161.854123][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.854123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.854123][ T72] ___sys_sendmsg+0xee/0x170 [ 161.854123][ T72] __sys_sendmsg+0xcd/0x170 [ 161.854123][ T72] do_syscall_64+0xc6/0x1e0 [ 161.854123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.854123][ T72] [ 161.856284][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 161.856284][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.856284][ T72] ipv6_find_idev+0x102/0x170 [ 161.856284][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.856284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.856284][ T72] netlink_rcv_skb+0x130/0x360 [ 161.856284][ T72] netlink_unicast+0x449/0x710 [ 161.856284][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.856284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.856284][ T72] ___sys_sendmsg+0xee/0x170 [ 161.856284][ T72] __sys_sendmsg+0xcd/0x170 [ 161.856284][ T72] do_syscall_64+0xc6/0x1e0 [ 161.856284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.856284][ T72] [ 161.857948][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 161.857948][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.857948][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.857948][ T72] ipv6_find_idev+0x102/0x170 [ 161.857948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.857948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.857948][ T72] netlink_rcv_skb+0x130/0x360 [ 161.857948][ T72] netlink_unicast+0x449/0x710 [ 161.857948][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.857948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.857948][ T72] ___sys_sendmsg+0xee/0x170 [ 161.857948][ T72] __sys_sendmsg+0xcd/0x170 [ 161.857948][ T72] do_syscall_64+0xc6/0x1e0 [ 161.857948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.857948][ T72] [ 161.860343][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 161.860656][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 161.860656][ T72] netdev_get_by_index+0x5e/0x80 [ 161.860656][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.860656][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.860656][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.860656][ T72] ipv6_add_addr+0x411/0x2000 [ 161.860656][ T72] inet6_addr_add+0x30e/0xa40 [ 161.860656][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.860656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.860656][ T72] netlink_rcv_skb+0x130/0x360 [ 161.860656][ T72] netlink_unicast+0x449/0x710 [ 161.860656][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.860656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.860656][ T72] ___sys_sendmsg+0xee/0x170 [ 161.860656][ T72] __sys_sendmsg+0xcd/0x170 [ 161.860656][ T72] do_syscall_64+0xc6/0x1e0 [ 161.860656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.860656][ T72] [ 161.862611][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 161.862611][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.862611][ T72] ipv6_find_idev+0x102/0x170 [ 161.862611][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.862611][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.862611][ T72] netlink_rcv_skb+0x130/0x360 [ 161.862611][ T72] netlink_unicast+0x449/0x710 [ 161.862611][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.862611][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.862611][ T72] ___sys_sendmsg+0xee/0x170 [ 161.862611][ T72] __sys_sendmsg+0xcd/0x170 [ 161.862611][ T72] do_syscall_64+0xc6/0x1e0 [ 161.862611][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.862611][ T72] [ 161.864234][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 161.864234][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.864234][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.864234][ T72] ipv6_find_idev+0x102/0x170 [ 161.864234][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.864234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.864234][ T72] netlink_rcv_skb+0x130/0x360 [ 161.864234][ T72] netlink_unicast+0x449/0x710 [ 161.864234][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.864234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.864234][ T72] ___sys_sendmsg+0xee/0x170 [ 161.864234][ T72] __sys_sendmsg+0xcd/0x170 [ 161.864234][ T72] do_syscall_64+0xc6/0x1e0 [ 161.864234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.864234][ T72] [ 161.866181][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 161.866507][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 161.866507][ T72] netdev_get_by_index+0x5e/0x80 [ 161.866507][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.866507][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.866507][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.866507][ T72] ipv6_add_addr+0x411/0x2000 [ 161.866507][ T72] inet6_addr_add+0x30e/0xa40 [ 161.866507][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.866507][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.866507][ T72] netlink_rcv_skb+0x130/0x360 [ 161.866507][ T72] netlink_unicast+0x449/0x710 [ 161.866507][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.866507][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.866507][ T72] ___sys_sendmsg+0xee/0x170 [ 161.866507][ T72] __sys_sendmsg+0xcd/0x170 [ 161.866507][ T72] do_syscall_64+0xc6/0x1e0 [ 161.866507][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.866507][ T72] [ 161.868700][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 161.868700][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.868700][ T72] ipv6_find_idev+0x102/0x170 [ 161.868700][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.868700][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.868700][ T72] netlink_rcv_skb+0x130/0x360 [ 161.868700][ T72] netlink_unicast+0x449/0x710 [ 161.868700][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.868700][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.868700][ T72] ___sys_sendmsg+0xee/0x170 [ 161.868700][ T72] __sys_sendmsg+0xcd/0x170 [ 161.868700][ T72] do_syscall_64+0xc6/0x1e0 [ 161.868700][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.868700][ T72] [ 161.870418][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 161.870418][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.870418][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.870418][ T72] ipv6_find_idev+0x102/0x170 [ 161.870418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.870418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.870418][ T72] netlink_rcv_skb+0x130/0x360 [ 161.870418][ T72] netlink_unicast+0x449/0x710 [ 161.870418][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.870418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.870418][ T72] ___sys_sendmsg+0xee/0x170 [ 161.870418][ T72] __sys_sendmsg+0xcd/0x170 [ 161.870418][ T72] do_syscall_64+0xc6/0x1e0 [ 161.870418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.870418][ T72] [ 161.872440][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 161.872705][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 161.872705][ T72] netdev_get_by_index+0x5e/0x80 [ 161.872705][ T72] fib6_nh_init+0x3d8/0x15b0 [ 161.872705][ T72] ip6_route_info_create+0xf18/0x17d0 [ 161.872705][ T72] addrconf_f6i_alloc+0x244/0x410 [ 161.872705][ T72] ipv6_add_addr+0x411/0x2000 [ 161.872705][ T72] inet6_addr_add+0x30e/0xa40 [ 161.872705][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 161.872705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.872705][ T72] netlink_rcv_skb+0x130/0x360 [ 161.872705][ T72] netlink_unicast+0x449/0x710 [ 161.872705][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.872705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.872705][ T72] ___sys_sendmsg+0xee/0x170 [ 161.872705][ T72] __sys_sendmsg+0xcd/0x170 [ 161.872705][ T72] do_syscall_64+0xc6/0x1e0 [ 161.872705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.872705][ T72] [ 161.874790][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 161.874790][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 161.874790][ T72] ipv6_find_idev+0x102/0x170 [ 161.874790][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.874790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.874790][ T72] netlink_rcv_skb+0x130/0x360 [ 161.874790][ T72] netlink_unicast+0x449/0x710 [ 161.874790][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.874790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.874790][ T72] ___sys_sendmsg+0xee/0x170 [ 161.874790][ T72] __sys_sendmsg+0xcd/0x170 [ 161.874790][ T72] do_syscall_64+0xc6/0x1e0 [ 161.874790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.874790][ T72] [ 161.876326][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 161.876326][ T72] neigh_parms_alloc+0x1e5/0x510 [ 161.876326][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 161.876326][ T72] ipv6_find_idev+0x102/0x170 [ 161.876326][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 161.876326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 161.876326][ T72] netlink_rcv_skb+0x130/0x360 [ 161.876326][ T72] netlink_unicast+0x449/0x710 [ 161.876326][ T72] netlink_sendmsg+0x723/0xbe0 [ 161.876326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 161.876326][ T72] ___sys_sendmsg+0xee/0x170 [ 161.876326][ T72] __sys_sendmsg+0xcd/0x170 [ 161.876326][ T72] do_syscall_64+0xc6/0x1e0 [ 161.876326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 161.876326][ T72] [ 171.950812][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 171.951220][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 171.951220][ T72] netdev_get_by_index+0x5e/0x80 [ 171.951220][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.951220][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.951220][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.951220][ T72] ipv6_add_addr+0x411/0x2000 [ 171.951220][ T72] inet6_addr_add+0x30e/0xa40 [ 171.951220][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.951220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.951220][ T72] netlink_rcv_skb+0x130/0x360 [ 171.951220][ T72] netlink_unicast+0x449/0x710 [ 171.951220][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.951220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.951220][ T72] ___sys_sendmsg+0xee/0x170 [ 171.951220][ T72] __sys_sendmsg+0xcd/0x170 [ 171.951220][ T72] do_syscall_64+0xc6/0x1e0 [ 171.951220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.951220][ T72] [ 171.953556][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 171.953556][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 171.953556][ T72] ipv6_find_idev+0x102/0x170 [ 171.953556][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.953556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.953556][ T72] netlink_rcv_skb+0x130/0x360 [ 171.953556][ T72] netlink_unicast+0x449/0x710 [ 171.953556][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.953556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.953556][ T72] ___sys_sendmsg+0xee/0x170 [ 171.953556][ T72] __sys_sendmsg+0xcd/0x170 [ 171.953556][ T72] do_syscall_64+0xc6/0x1e0 [ 171.953556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.953556][ T72] [ 171.955348][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 171.955348][ T72] neigh_parms_alloc+0x1e5/0x510 [ 171.955348][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 171.955348][ T72] ipv6_find_idev+0x102/0x170 [ 171.955348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.955348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.955348][ T72] netlink_rcv_skb+0x130/0x360 [ 171.955348][ T72] netlink_unicast+0x449/0x710 [ 171.955348][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.955348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.955348][ T72] ___sys_sendmsg+0xee/0x170 [ 171.955348][ T72] __sys_sendmsg+0xcd/0x170 [ 171.955348][ T72] do_syscall_64+0xc6/0x1e0 [ 171.955348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.955348][ T72] [ 171.957321][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 171.957650][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 171.957650][ T72] netdev_get_by_index+0x5e/0x80 [ 171.957650][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.957650][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.957650][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.957650][ T72] ipv6_add_addr+0x411/0x2000 [ 171.957650][ T72] inet6_addr_add+0x30e/0xa40 [ 171.957650][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.957650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.957650][ T72] netlink_rcv_skb+0x130/0x360 [ 171.957650][ T72] netlink_unicast+0x449/0x710 [ 171.957650][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.957650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.957650][ T72] ___sys_sendmsg+0xee/0x170 [ 171.957650][ T72] __sys_sendmsg+0xcd/0x170 [ 171.957650][ T72] do_syscall_64+0xc6/0x1e0 [ 171.957650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.957650][ T72] [ 171.959981][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 171.959981][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 171.959981][ T72] ipv6_find_idev+0x102/0x170 [ 171.959981][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.959981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.959981][ T72] netlink_rcv_skb+0x130/0x360 [ 171.959981][ T72] netlink_unicast+0x449/0x710 [ 171.959981][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.959981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.959981][ T72] ___sys_sendmsg+0xee/0x170 [ 171.959981][ T72] __sys_sendmsg+0xcd/0x170 [ 171.959981][ T72] do_syscall_64+0xc6/0x1e0 [ 171.959981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.959981][ T72] [ 171.961779][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 171.961779][ T72] neigh_parms_alloc+0x1e5/0x510 [ 171.961779][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 171.961779][ T72] ipv6_find_idev+0x102/0x170 [ 171.961779][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.961779][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.961779][ T72] netlink_rcv_skb+0x130/0x360 [ 171.961779][ T72] netlink_unicast+0x449/0x710 [ 171.961779][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.961779][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.961779][ T72] ___sys_sendmsg+0xee/0x170 [ 171.961779][ T72] __sys_sendmsg+0xcd/0x170 [ 171.961779][ T72] do_syscall_64+0xc6/0x1e0 [ 171.961779][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.961779][ T72] [ 171.963758][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 171.964073][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 171.964073][ T72] netdev_get_by_index+0x5e/0x80 [ 171.964073][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.964073][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.964073][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.964073][ T72] ipv6_add_addr+0x411/0x2000 [ 171.964073][ T72] inet6_addr_add+0x30e/0xa40 [ 171.964073][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.964073][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.964073][ T72] netlink_rcv_skb+0x130/0x360 [ 171.964073][ T72] netlink_unicast+0x449/0x710 [ 171.964073][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.964073][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.964073][ T72] ___sys_sendmsg+0xee/0x170 [ 171.964073][ T72] __sys_sendmsg+0xcd/0x170 [ 171.964073][ T72] do_syscall_64+0xc6/0x1e0 [ 171.964073][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.964073][ T72] [ 171.966404][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 171.966404][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 171.966404][ T72] ipv6_find_idev+0x102/0x170 [ 171.966404][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.966404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.966404][ T72] netlink_rcv_skb+0x130/0x360 [ 171.966404][ T72] netlink_unicast+0x449/0x710 [ 171.966404][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.966404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.966404][ T72] ___sys_sendmsg+0xee/0x170 [ 171.966404][ T72] __sys_sendmsg+0xcd/0x170 [ 171.966404][ T72] do_syscall_64+0xc6/0x1e0 [ 171.966404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.966404][ T72] [ 171.968203][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 171.968203][ T72] neigh_parms_alloc+0x1e5/0x510 [ 171.968203][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 171.968203][ T72] ipv6_find_idev+0x102/0x170 [ 171.968203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.968203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.968203][ T72] netlink_rcv_skb+0x130/0x360 [ 171.968203][ T72] netlink_unicast+0x449/0x710 [ 171.968203][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.968203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.968203][ T72] ___sys_sendmsg+0xee/0x170 [ 171.968203][ T72] __sys_sendmsg+0xcd/0x170 [ 171.968203][ T72] do_syscall_64+0xc6/0x1e0 [ 171.968203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.968203][ T72] [ 171.970338][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 171.970653][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 171.970653][ T72] netdev_get_by_index+0x5e/0x80 [ 171.970653][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.970653][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.970653][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.970653][ T72] ipv6_add_addr+0x411/0x2000 [ 171.970653][ T72] inet6_addr_add+0x30e/0xa40 [ 171.970653][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.970653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.970653][ T72] netlink_rcv_skb+0x130/0x360 [ 171.970653][ T72] netlink_unicast+0x449/0x710 [ 171.970653][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.970653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.970653][ T72] ___sys_sendmsg+0xee/0x170 [ 171.970653][ T72] __sys_sendmsg+0xcd/0x170 [ 171.970653][ T72] do_syscall_64+0xc6/0x1e0 [ 171.970653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.970653][ T72] [ 171.973208][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 171.973208][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 171.973208][ T72] ipv6_find_idev+0x102/0x170 [ 171.973208][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.973208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.973208][ T72] netlink_rcv_skb+0x130/0x360 [ 171.973208][ T72] netlink_unicast+0x449/0x710 [ 171.973208][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.973208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.973208][ T72] ___sys_sendmsg+0xee/0x170 [ 171.973208][ T72] __sys_sendmsg+0xcd/0x170 [ 171.973208][ T72] do_syscall_64+0xc6/0x1e0 [ 171.973208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.973208][ T72] [ 171.975201][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 171.975201][ T72] neigh_parms_alloc+0x1e5/0x510 [ 171.975201][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 171.975201][ T72] ipv6_find_idev+0x102/0x170 [ 171.975201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.975201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.975201][ T72] netlink_rcv_skb+0x130/0x360 [ 171.975201][ T72] netlink_unicast+0x449/0x710 [ 171.975201][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.975201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.975201][ T72] ___sys_sendmsg+0xee/0x170 [ 171.975201][ T72] __sys_sendmsg+0xcd/0x170 [ 171.975201][ T72] do_syscall_64+0xc6/0x1e0 [ 171.975201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.975201][ T72] [ 171.977353][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 171.977660][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 171.977660][ T72] netdev_get_by_index+0x5e/0x80 [ 171.977660][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.977660][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.977660][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.977660][ T72] ipv6_add_addr+0x411/0x2000 [ 171.977660][ T72] inet6_addr_add+0x30e/0xa40 [ 171.977660][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.977660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.977660][ T72] netlink_rcv_skb+0x130/0x360 [ 171.977660][ T72] netlink_unicast+0x449/0x710 [ 171.977660][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.977660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.977660][ T72] ___sys_sendmsg+0xee/0x170 [ 171.977660][ T72] __sys_sendmsg+0xcd/0x170 [ 171.977660][ T72] do_syscall_64+0xc6/0x1e0 [ 171.977660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.977660][ T72] [ 171.980051][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 171.980051][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 171.980051][ T72] ipv6_find_idev+0x102/0x170 [ 171.980051][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.980051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.980051][ T72] netlink_rcv_skb+0x130/0x360 [ 171.980051][ T72] netlink_unicast+0x449/0x710 [ 171.980051][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.980051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.980051][ T72] ___sys_sendmsg+0xee/0x170 [ 171.980051][ T72] __sys_sendmsg+0xcd/0x170 [ 171.980051][ T72] do_syscall_64+0xc6/0x1e0 [ 171.980051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.980051][ T72] [ 171.982046][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 171.982046][ T72] neigh_parms_alloc+0x1e5/0x510 [ 171.982046][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 171.982046][ T72] ipv6_find_idev+0x102/0x170 [ 171.982046][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.982046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.982046][ T72] netlink_rcv_skb+0x130/0x360 [ 171.982046][ T72] netlink_unicast+0x449/0x710 [ 171.982046][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.982046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.982046][ T72] ___sys_sendmsg+0xee/0x170 [ 171.982046][ T72] __sys_sendmsg+0xcd/0x170 [ 171.982046][ T72] do_syscall_64+0xc6/0x1e0 [ 171.982046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.982046][ T72] [ 171.984699][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 171.985075][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 171.985075][ T72] netdev_get_by_index+0x5e/0x80 [ 171.985075][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.985075][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.985075][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.985075][ T72] ipv6_add_addr+0x411/0x2000 [ 171.985075][ T72] inet6_addr_add+0x30e/0xa40 [ 171.985075][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.985075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.985075][ T72] netlink_rcv_skb+0x130/0x360 [ 171.985075][ T72] netlink_unicast+0x449/0x710 [ 171.985075][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.985075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.985075][ T72] ___sys_sendmsg+0xee/0x170 [ 171.985075][ T72] __sys_sendmsg+0xcd/0x170 [ 171.985075][ T72] do_syscall_64+0xc6/0x1e0 [ 171.985075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.985075][ T72] [ 171.987423][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 171.987423][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 171.987423][ T72] ipv6_find_idev+0x102/0x170 [ 171.987423][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.987423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.987423][ T72] netlink_rcv_skb+0x130/0x360 [ 171.987423][ T72] netlink_unicast+0x449/0x710 [ 171.987423][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.987423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.987423][ T72] ___sys_sendmsg+0xee/0x170 [ 171.987423][ T72] __sys_sendmsg+0xcd/0x170 [ 171.987423][ T72] do_syscall_64+0xc6/0x1e0 [ 171.987423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.987423][ T72] [ 171.989462][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 171.989462][ T72] neigh_parms_alloc+0x1e5/0x510 [ 171.989462][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 171.989462][ T72] ipv6_find_idev+0x102/0x170 [ 171.989462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.989462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.989462][ T72] netlink_rcv_skb+0x130/0x360 [ 171.989462][ T72] netlink_unicast+0x449/0x710 [ 171.989462][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.989462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.989462][ T72] ___sys_sendmsg+0xee/0x170 [ 171.989462][ T72] __sys_sendmsg+0xcd/0x170 [ 171.989462][ T72] do_syscall_64+0xc6/0x1e0 [ 171.989462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.989462][ T72] [ 171.991713][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 171.992090][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 171.992090][ T72] netdev_get_by_index+0x5e/0x80 [ 171.992090][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.992090][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.992090][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.992090][ T72] ipv6_add_addr+0x411/0x2000 [ 171.992090][ T72] inet6_addr_add+0x30e/0xa40 [ 171.992090][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.992090][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.992090][ T72] netlink_rcv_skb+0x130/0x360 [ 171.992090][ T72] netlink_unicast+0x449/0x710 [ 171.992090][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.992090][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.992090][ T72] ___sys_sendmsg+0xee/0x170 [ 171.992090][ T72] __sys_sendmsg+0xcd/0x170 [ 171.992090][ T72] do_syscall_64+0xc6/0x1e0 [ 171.992090][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.992090][ T72] [ 171.994437][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 171.994437][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 171.994437][ T72] ipv6_find_idev+0x102/0x170 [ 171.994437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.994437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.994437][ T72] netlink_rcv_skb+0x130/0x360 [ 171.994437][ T72] netlink_unicast+0x449/0x710 [ 171.994437][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.994437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.994437][ T72] ___sys_sendmsg+0xee/0x170 [ 171.994437][ T72] __sys_sendmsg+0xcd/0x170 [ 171.994437][ T72] do_syscall_64+0xc6/0x1e0 [ 171.994437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.994437][ T72] [ 171.996314][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 171.996314][ T72] neigh_parms_alloc+0x1e5/0x510 [ 171.996314][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 171.996314][ T72] ipv6_find_idev+0x102/0x170 [ 171.996314][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 171.996314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.996314][ T72] netlink_rcv_skb+0x130/0x360 [ 171.996314][ T72] netlink_unicast+0x449/0x710 [ 171.996314][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.996314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.996314][ T72] ___sys_sendmsg+0xee/0x170 [ 171.996314][ T72] __sys_sendmsg+0xcd/0x170 [ 171.996314][ T72] do_syscall_64+0xc6/0x1e0 [ 171.996314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.996314][ T72] [ 171.998577][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 171.998946][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 171.998946][ T72] netdev_get_by_index+0x5e/0x80 [ 171.998946][ T72] fib6_nh_init+0x3d8/0x15b0 [ 171.998946][ T72] ip6_route_info_create+0xf18/0x17d0 [ 171.998946][ T72] addrconf_f6i_alloc+0x244/0x410 [ 171.998946][ T72] ipv6_add_addr+0x411/0x2000 [ 171.998946][ T72] inet6_addr_add+0x30e/0xa40 [ 171.998946][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 171.998946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 171.998946][ T72] netlink_rcv_skb+0x130/0x360 [ 171.998946][ T72] netlink_unicast+0x449/0x710 [ 171.998946][ T72] netlink_sendmsg+0x723/0xbe0 [ 171.998946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 171.998946][ T72] ___sys_sendmsg+0xee/0x170 [ 171.998946][ T72] __sys_sendmsg+0xcd/0x170 [ 171.998946][ T72] do_syscall_64+0xc6/0x1e0 [ 171.998946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 171.998946][ T72] [ 172.001298][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 172.001298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 172.001298][ T72] ipv6_find_idev+0x102/0x170 [ 172.001298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 172.001298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 172.001298][ T72] netlink_rcv_skb+0x130/0x360 [ 172.001298][ T72] netlink_unicast+0x449/0x710 [ 172.001298][ T72] netlink_sendmsg+0x723/0xbe0 [ 172.001298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 172.001298][ T72] ___sys_sendmsg+0xee/0x170 [ 172.001298][ T72] __sys_sendmsg+0xcd/0x170 [ 172.001298][ T72] do_syscall_64+0xc6/0x1e0 [ 172.001298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 172.001298][ T72] [ 172.003252][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 172.003252][ T72] neigh_parms_alloc+0x1e5/0x510 [ 172.003252][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 172.003252][ T72] ipv6_find_idev+0x102/0x170 [ 172.003252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 172.003252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 172.003252][ T72] netlink_rcv_skb+0x130/0x360 [ 172.003252][ T72] netlink_unicast+0x449/0x710 [ 172.003252][ T72] netlink_sendmsg+0x723/0xbe0 [ 172.003252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 172.003252][ T72] ___sys_sendmsg+0xee/0x170 [ 172.003252][ T72] __sys_sendmsg+0xcd/0x170 [ 172.003252][ T72] do_syscall_64+0xc6/0x1e0 [ 172.003252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 172.003252][ T72] [ 182.086825][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 182.087245][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 182.087245][ T72] netdev_get_by_index+0x5e/0x80 [ 182.087245][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.087245][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.087245][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.087245][ T72] ipv6_add_addr+0x411/0x2000 [ 182.087245][ T72] inet6_addr_add+0x30e/0xa40 [ 182.087245][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.087245][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.087245][ T72] netlink_rcv_skb+0x130/0x360 [ 182.087245][ T72] netlink_unicast+0x449/0x710 [ 182.087245][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.087245][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.087245][ T72] ___sys_sendmsg+0xee/0x170 [ 182.087245][ T72] __sys_sendmsg+0xcd/0x170 [ 182.087245][ T72] do_syscall_64+0xc6/0x1e0 [ 182.087245][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.087245][ T72] [ 182.089307][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 182.089307][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.089307][ T72] ipv6_find_idev+0x102/0x170 [ 182.089307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.089307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.089307][ T72] netlink_rcv_skb+0x130/0x360 [ 182.089307][ T72] netlink_unicast+0x449/0x710 [ 182.089307][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.089307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.089307][ T72] ___sys_sendmsg+0xee/0x170 [ 182.089307][ T72] __sys_sendmsg+0xcd/0x170 [ 182.089307][ T72] do_syscall_64+0xc6/0x1e0 [ 182.089307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.089307][ T72] [ 182.090890][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 182.090890][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.090890][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.090890][ T72] ipv6_find_idev+0x102/0x170 [ 182.090890][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.090890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.090890][ T72] netlink_rcv_skb+0x130/0x360 [ 182.090890][ T72] netlink_unicast+0x449/0x710 [ 182.090890][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.090890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.090890][ T72] ___sys_sendmsg+0xee/0x170 [ 182.090890][ T72] __sys_sendmsg+0xcd/0x170 [ 182.090890][ T72] do_syscall_64+0xc6/0x1e0 [ 182.090890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.090890][ T72] [ 182.092625][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 182.092915][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 182.092915][ T72] netdev_get_by_index+0x5e/0x80 [ 182.092915][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.092915][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.092915][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.092915][ T72] ipv6_add_addr+0x411/0x2000 [ 182.092915][ T72] inet6_addr_add+0x30e/0xa40 [ 182.092915][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.092915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.092915][ T72] netlink_rcv_skb+0x130/0x360 [ 182.092915][ T72] netlink_unicast+0x449/0x710 [ 182.092915][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.092915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.092915][ T72] ___sys_sendmsg+0xee/0x170 [ 182.092915][ T72] __sys_sendmsg+0xcd/0x170 [ 182.092915][ T72] do_syscall_64+0xc6/0x1e0 [ 182.092915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.092915][ T72] [ 182.094932][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 182.094932][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.094932][ T72] ipv6_find_idev+0x102/0x170 [ 182.094932][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.094932][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.094932][ T72] netlink_rcv_skb+0x130/0x360 [ 182.094932][ T72] netlink_unicast+0x449/0x710 [ 182.094932][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.094932][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.094932][ T72] ___sys_sendmsg+0xee/0x170 [ 182.094932][ T72] __sys_sendmsg+0xcd/0x170 [ 182.094932][ T72] do_syscall_64+0xc6/0x1e0 [ 182.094932][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.094932][ T72] [ 182.096484][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 182.096484][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.096484][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.096484][ T72] ipv6_find_idev+0x102/0x170 [ 182.096484][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.096484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.096484][ T72] netlink_rcv_skb+0x130/0x360 [ 182.096484][ T72] netlink_unicast+0x449/0x710 [ 182.096484][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.096484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.096484][ T72] ___sys_sendmsg+0xee/0x170 [ 182.096484][ T72] __sys_sendmsg+0xcd/0x170 [ 182.096484][ T72] do_syscall_64+0xc6/0x1e0 [ 182.096484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.096484][ T72] [ 182.098188][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 182.098456][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 182.098456][ T72] netdev_get_by_index+0x5e/0x80 [ 182.098456][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.098456][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.098456][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.098456][ T72] ipv6_add_addr+0x411/0x2000 [ 182.098456][ T72] inet6_addr_add+0x30e/0xa40 [ 182.098456][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.098456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.098456][ T72] netlink_rcv_skb+0x130/0x360 [ 182.098456][ T72] netlink_unicast+0x449/0x710 [ 182.098456][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.098456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.098456][ T72] ___sys_sendmsg+0xee/0x170 [ 182.098456][ T72] __sys_sendmsg+0xcd/0x170 [ 182.098456][ T72] do_syscall_64+0xc6/0x1e0 [ 182.098456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.098456][ T72] [ 182.100482][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 182.100482][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.100482][ T72] ipv6_find_idev+0x102/0x170 [ 182.100482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.100482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.100482][ T72] netlink_rcv_skb+0x130/0x360 [ 182.100482][ T72] netlink_unicast+0x449/0x710 [ 182.100482][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.100482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.100482][ T72] ___sys_sendmsg+0xee/0x170 [ 182.100482][ T72] __sys_sendmsg+0xcd/0x170 [ 182.100482][ T72] do_syscall_64+0xc6/0x1e0 [ 182.100482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.100482][ T72] [ 182.102023][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 182.102023][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.102023][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.102023][ T72] ipv6_find_idev+0x102/0x170 [ 182.102023][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.102023][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.102023][ T72] netlink_rcv_skb+0x130/0x360 [ 182.102023][ T72] netlink_unicast+0x449/0x710 [ 182.102023][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.102023][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.102023][ T72] ___sys_sendmsg+0xee/0x170 [ 182.102023][ T72] __sys_sendmsg+0xcd/0x170 [ 182.102023][ T72] do_syscall_64+0xc6/0x1e0 [ 182.102023][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.102023][ T72] [ 182.103723][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 182.104460][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 182.104460][ T72] netdev_get_by_index+0x5e/0x80 [ 182.104460][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.104460][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.104460][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.104460][ T72] ipv6_add_addr+0x411/0x2000 [ 182.104460][ T72] inet6_addr_add+0x30e/0xa40 [ 182.104460][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.104460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.104460][ T72] netlink_rcv_skb+0x130/0x360 [ 182.104460][ T72] netlink_unicast+0x449/0x710 [ 182.104460][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.104460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.104460][ T72] ___sys_sendmsg+0xee/0x170 [ 182.104460][ T72] __sys_sendmsg+0xcd/0x170 [ 182.104460][ T72] do_syscall_64+0xc6/0x1e0 [ 182.104460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.104460][ T72] [ 182.106449][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 182.106449][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.106449][ T72] ipv6_find_idev+0x102/0x170 [ 182.106449][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.106449][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.106449][ T72] netlink_rcv_skb+0x130/0x360 [ 182.106449][ T72] netlink_unicast+0x449/0x710 [ 182.106449][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.106449][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.106449][ T72] ___sys_sendmsg+0xee/0x170 [ 182.106449][ T72] __sys_sendmsg+0xcd/0x170 [ 182.106449][ T72] do_syscall_64+0xc6/0x1e0 [ 182.106449][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.106449][ T72] [ 182.107989][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 182.107989][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.107989][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.107989][ T72] ipv6_find_idev+0x102/0x170 [ 182.107989][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.107989][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.107989][ T72] netlink_rcv_skb+0x130/0x360 [ 182.107989][ T72] netlink_unicast+0x449/0x710 [ 182.107989][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.107989][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.107989][ T72] ___sys_sendmsg+0xee/0x170 [ 182.107989][ T72] __sys_sendmsg+0xcd/0x170 [ 182.107989][ T72] do_syscall_64+0xc6/0x1e0 [ 182.107989][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.107989][ T72] [ 182.109726][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 182.110058][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 182.110058][ T72] netdev_get_by_index+0x5e/0x80 [ 182.110058][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.110058][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.110058][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.110058][ T72] ipv6_add_addr+0x411/0x2000 [ 182.110058][ T72] inet6_addr_add+0x30e/0xa40 [ 182.110058][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.110058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.110058][ T72] netlink_rcv_skb+0x130/0x360 [ 182.110058][ T72] netlink_unicast+0x449/0x710 [ 182.110058][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.110058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.110058][ T72] ___sys_sendmsg+0xee/0x170 [ 182.110058][ T72] __sys_sendmsg+0xcd/0x170 [ 182.110058][ T72] do_syscall_64+0xc6/0x1e0 [ 182.110058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.110058][ T72] [ 182.112068][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 182.112068][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.112068][ T72] ipv6_find_idev+0x102/0x170 [ 182.112068][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.112068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.112068][ T72] netlink_rcv_skb+0x130/0x360 [ 182.112068][ T72] netlink_unicast+0x449/0x710 [ 182.112068][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.112068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.112068][ T72] ___sys_sendmsg+0xee/0x170 [ 182.112068][ T72] __sys_sendmsg+0xcd/0x170 [ 182.112068][ T72] do_syscall_64+0xc6/0x1e0 [ 182.112068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.112068][ T72] [ 182.113623][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 182.113623][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.113623][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.113623][ T72] ipv6_find_idev+0x102/0x170 [ 182.113623][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.113623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.113623][ T72] netlink_rcv_skb+0x130/0x360 [ 182.113623][ T72] netlink_unicast+0x449/0x710 [ 182.113623][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.113623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.113623][ T72] ___sys_sendmsg+0xee/0x170 [ 182.113623][ T72] __sys_sendmsg+0xcd/0x170 [ 182.113623][ T72] do_syscall_64+0xc6/0x1e0 [ 182.113623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.113623][ T72] [ 182.115366][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 182.115631][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 182.115631][ T72] netdev_get_by_index+0x5e/0x80 [ 182.115631][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.115631][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.115631][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.115631][ T72] ipv6_add_addr+0x411/0x2000 [ 182.115631][ T72] inet6_addr_add+0x30e/0xa40 [ 182.115631][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.115631][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.115631][ T72] netlink_rcv_skb+0x130/0x360 [ 182.115631][ T72] netlink_unicast+0x449/0x710 [ 182.115631][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.115631][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.115631][ T72] ___sys_sendmsg+0xee/0x170 [ 182.115631][ T72] __sys_sendmsg+0xcd/0x170 [ 182.115631][ T72] do_syscall_64+0xc6/0x1e0 [ 182.115631][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.115631][ T72] [ 182.117707][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 182.117707][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.117707][ T72] ipv6_find_idev+0x102/0x170 [ 182.117707][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.117707][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.117707][ T72] netlink_rcv_skb+0x130/0x360 [ 182.117707][ T72] netlink_unicast+0x449/0x710 [ 182.117707][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.117707][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.117707][ T72] ___sys_sendmsg+0xee/0x170 [ 182.117707][ T72] __sys_sendmsg+0xcd/0x170 [ 182.117707][ T72] do_syscall_64+0xc6/0x1e0 [ 182.117707][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.117707][ T72] [ 182.119446][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 182.119446][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.119446][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.119446][ T72] ipv6_find_idev+0x102/0x170 [ 182.119446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.119446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.119446][ T72] netlink_rcv_skb+0x130/0x360 [ 182.119446][ T72] netlink_unicast+0x449/0x710 [ 182.119446][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.119446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.119446][ T72] ___sys_sendmsg+0xee/0x170 [ 182.119446][ T72] __sys_sendmsg+0xcd/0x170 [ 182.119446][ T72] do_syscall_64+0xc6/0x1e0 [ 182.119446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.119446][ T72] [ 182.121446][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 182.121712][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 182.121712][ T72] netdev_get_by_index+0x5e/0x80 [ 182.121712][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.121712][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.121712][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.121712][ T72] ipv6_add_addr+0x411/0x2000 [ 182.121712][ T72] inet6_addr_add+0x30e/0xa40 [ 182.121712][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.121712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.121712][ T72] netlink_rcv_skb+0x130/0x360 [ 182.121712][ T72] netlink_unicast+0x449/0x710 [ 182.121712][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.121712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.121712][ T72] ___sys_sendmsg+0xee/0x170 [ 182.121712][ T72] __sys_sendmsg+0xcd/0x170 [ 182.121712][ T72] do_syscall_64+0xc6/0x1e0 [ 182.121712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.121712][ T72] [ 182.123967][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 182.123967][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.123967][ T72] ipv6_find_idev+0x102/0x170 [ 182.123967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.123967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.123967][ T72] netlink_rcv_skb+0x130/0x360 [ 182.123967][ T72] netlink_unicast+0x449/0x710 [ 182.123967][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.123967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.123967][ T72] ___sys_sendmsg+0xee/0x170 [ 182.123967][ T72] __sys_sendmsg+0xcd/0x170 [ 182.123967][ T72] do_syscall_64+0xc6/0x1e0 [ 182.123967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.123967][ T72] [ 182.125714][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 182.125714][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.125714][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.125714][ T72] ipv6_find_idev+0x102/0x170 [ 182.125714][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.125714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.125714][ T72] netlink_rcv_skb+0x130/0x360 [ 182.125714][ T72] netlink_unicast+0x449/0x710 [ 182.125714][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.125714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.125714][ T72] ___sys_sendmsg+0xee/0x170 [ 182.125714][ T72] __sys_sendmsg+0xcd/0x170 [ 182.125714][ T72] do_syscall_64+0xc6/0x1e0 [ 182.125714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.125714][ T72] [ 182.127640][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 182.127964][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 182.127964][ T72] netdev_get_by_index+0x5e/0x80 [ 182.127964][ T72] fib6_nh_init+0x3d8/0x15b0 [ 182.127964][ T72] ip6_route_info_create+0xf18/0x17d0 [ 182.127964][ T72] addrconf_f6i_alloc+0x244/0x410 [ 182.127964][ T72] ipv6_add_addr+0x411/0x2000 [ 182.127964][ T72] inet6_addr_add+0x30e/0xa40 [ 182.127964][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 182.127964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.127964][ T72] netlink_rcv_skb+0x130/0x360 [ 182.127964][ T72] netlink_unicast+0x449/0x710 [ 182.127964][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.127964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.127964][ T72] ___sys_sendmsg+0xee/0x170 [ 182.127964][ T72] __sys_sendmsg+0xcd/0x170 [ 182.127964][ T72] do_syscall_64+0xc6/0x1e0 [ 182.127964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.127964][ T72] [ 182.130182][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 182.130182][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 182.130182][ T72] ipv6_find_idev+0x102/0x170 [ 182.130182][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.130182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.130182][ T72] netlink_rcv_skb+0x130/0x360 [ 182.130182][ T72] netlink_unicast+0x449/0x710 [ 182.130182][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.130182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.130182][ T72] ___sys_sendmsg+0xee/0x170 [ 182.130182][ T72] __sys_sendmsg+0xcd/0x170 [ 182.130182][ T72] do_syscall_64+0xc6/0x1e0 [ 182.130182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.130182][ T72] [ 182.131975][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 182.131975][ T72] neigh_parms_alloc+0x1e5/0x510 [ 182.131975][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 182.131975][ T72] ipv6_find_idev+0x102/0x170 [ 182.131975][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 182.131975][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 182.131975][ T72] netlink_rcv_skb+0x130/0x360 [ 182.131975][ T72] netlink_unicast+0x449/0x710 [ 182.131975][ T72] netlink_sendmsg+0x723/0xbe0 [ 182.131975][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 182.131975][ T72] ___sys_sendmsg+0xee/0x170 [ 182.131975][ T72] __sys_sendmsg+0xcd/0x170 [ 182.131975][ T72] do_syscall_64+0xc6/0x1e0 [ 182.131975][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 182.131975][ T72] [ 192.382857][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 192.383419][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 192.383419][ T72] netdev_get_by_index+0x5e/0x80 [ 192.383419][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.383419][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.383419][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.383419][ T72] ipv6_add_addr+0x411/0x2000 [ 192.383419][ T72] inet6_addr_add+0x30e/0xa40 [ 192.383419][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.383419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.383419][ T72] netlink_rcv_skb+0x130/0x360 [ 192.383419][ T72] netlink_unicast+0x449/0x710 [ 192.383419][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.383419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.383419][ T72] ___sys_sendmsg+0xee/0x170 [ 192.383419][ T72] __sys_sendmsg+0xcd/0x170 [ 192.383419][ T72] do_syscall_64+0xc6/0x1e0 [ 192.383419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.383419][ T72] [ 192.385853][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 192.385853][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.385853][ T72] ipv6_find_idev+0x102/0x170 [ 192.385853][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.385853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.385853][ T72] netlink_rcv_skb+0x130/0x360 [ 192.385853][ T72] netlink_unicast+0x449/0x710 [ 192.385853][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.385853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.385853][ T72] ___sys_sendmsg+0xee/0x170 [ 192.385853][ T72] __sys_sendmsg+0xcd/0x170 [ 192.385853][ T72] do_syscall_64+0xc6/0x1e0 [ 192.385853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.385853][ T72] [ 192.387728][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 192.387728][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.387728][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.387728][ T72] ipv6_find_idev+0x102/0x170 [ 192.387728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.387728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.387728][ T72] netlink_rcv_skb+0x130/0x360 [ 192.387728][ T72] netlink_unicast+0x449/0x710 [ 192.387728][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.387728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.387728][ T72] ___sys_sendmsg+0xee/0x170 [ 192.387728][ T72] __sys_sendmsg+0xcd/0x170 [ 192.387728][ T72] do_syscall_64+0xc6/0x1e0 [ 192.387728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.387728][ T72] [ 192.389762][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 192.390086][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 192.390086][ T72] netdev_get_by_index+0x5e/0x80 [ 192.390086][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.390086][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.390086][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.390086][ T72] ipv6_add_addr+0x411/0x2000 [ 192.390086][ T72] inet6_addr_add+0x30e/0xa40 [ 192.390086][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.390086][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.390086][ T72] netlink_rcv_skb+0x130/0x360 [ 192.390086][ T72] netlink_unicast+0x449/0x710 [ 192.390086][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.390086][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.390086][ T72] ___sys_sendmsg+0xee/0x170 [ 192.390086][ T72] __sys_sendmsg+0xcd/0x170 [ 192.390086][ T72] do_syscall_64+0xc6/0x1e0 [ 192.390086][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.390086][ T72] [ 192.392431][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 192.392431][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.392431][ T72] ipv6_find_idev+0x102/0x170 [ 192.392431][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.392431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.392431][ T72] netlink_rcv_skb+0x130/0x360 [ 192.392431][ T72] netlink_unicast+0x449/0x710 [ 192.392431][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.392431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.392431][ T72] ___sys_sendmsg+0xee/0x170 [ 192.392431][ T72] __sys_sendmsg+0xcd/0x170 [ 192.392431][ T72] do_syscall_64+0xc6/0x1e0 [ 192.392431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.392431][ T72] [ 192.394245][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 192.394245][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.394245][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.394245][ T72] ipv6_find_idev+0x102/0x170 [ 192.394245][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.394245][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.394245][ T72] netlink_rcv_skb+0x130/0x360 [ 192.394245][ T72] netlink_unicast+0x449/0x710 [ 192.394245][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.394245][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.394245][ T72] ___sys_sendmsg+0xee/0x170 [ 192.394245][ T72] __sys_sendmsg+0xcd/0x170 [ 192.394245][ T72] do_syscall_64+0xc6/0x1e0 [ 192.394245][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.394245][ T72] [ 192.396232][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 192.396534][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 192.396534][ T72] netdev_get_by_index+0x5e/0x80 [ 192.396534][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.396534][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.396534][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.396534][ T72] ipv6_add_addr+0x411/0x2000 [ 192.396534][ T72] inet6_addr_add+0x30e/0xa40 [ 192.396534][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.396534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.396534][ T72] netlink_rcv_skb+0x130/0x360 [ 192.396534][ T72] netlink_unicast+0x449/0x710 [ 192.396534][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.396534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.396534][ T72] ___sys_sendmsg+0xee/0x170 [ 192.396534][ T72] __sys_sendmsg+0xcd/0x170 [ 192.396534][ T72] do_syscall_64+0xc6/0x1e0 [ 192.396534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.396534][ T72] [ 192.398932][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 192.398932][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.398932][ T72] ipv6_find_idev+0x102/0x170 [ 192.398932][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.398932][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.398932][ T72] netlink_rcv_skb+0x130/0x360 [ 192.398932][ T72] netlink_unicast+0x449/0x710 [ 192.398932][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.398932][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.398932][ T72] ___sys_sendmsg+0xee/0x170 [ 192.398932][ T72] __sys_sendmsg+0xcd/0x170 [ 192.398932][ T72] do_syscall_64+0xc6/0x1e0 [ 192.398932][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.398932][ T72] [ 192.400768][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 192.400768][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.400768][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.400768][ T72] ipv6_find_idev+0x102/0x170 [ 192.400768][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.400768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.400768][ T72] netlink_rcv_skb+0x130/0x360 [ 192.400768][ T72] netlink_unicast+0x449/0x710 [ 192.400768][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.400768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.400768][ T72] ___sys_sendmsg+0xee/0x170 [ 192.400768][ T72] __sys_sendmsg+0xcd/0x170 [ 192.400768][ T72] do_syscall_64+0xc6/0x1e0 [ 192.400768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.400768][ T72] [ 192.402807][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 192.403121][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 192.403121][ T72] netdev_get_by_index+0x5e/0x80 [ 192.403121][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.403121][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.403121][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.403121][ T72] ipv6_add_addr+0x411/0x2000 [ 192.403121][ T72] inet6_addr_add+0x30e/0xa40 [ 192.403121][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.403121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.403121][ T72] netlink_rcv_skb+0x130/0x360 [ 192.403121][ T72] netlink_unicast+0x449/0x710 [ 192.403121][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.403121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.403121][ T72] ___sys_sendmsg+0xee/0x170 [ 192.403121][ T72] __sys_sendmsg+0xcd/0x170 [ 192.403121][ T72] do_syscall_64+0xc6/0x1e0 [ 192.403121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.403121][ T72] [ 192.405504][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 192.405504][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.405504][ T72] ipv6_find_idev+0x102/0x170 [ 192.405504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.405504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.405504][ T72] netlink_rcv_skb+0x130/0x360 [ 192.405504][ T72] netlink_unicast+0x449/0x710 [ 192.405504][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.405504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.405504][ T72] ___sys_sendmsg+0xee/0x170 [ 192.405504][ T72] __sys_sendmsg+0xcd/0x170 [ 192.405504][ T72] do_syscall_64+0xc6/0x1e0 [ 192.405504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.405504][ T72] [ 192.407344][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 192.407344][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.407344][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.407344][ T72] ipv6_find_idev+0x102/0x170 [ 192.407344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.407344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.407344][ T72] netlink_rcv_skb+0x130/0x360 [ 192.407344][ T72] netlink_unicast+0x449/0x710 [ 192.407344][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.407344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.407344][ T72] ___sys_sendmsg+0xee/0x170 [ 192.407344][ T72] __sys_sendmsg+0xcd/0x170 [ 192.407344][ T72] do_syscall_64+0xc6/0x1e0 [ 192.407344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.407344][ T72] [ 192.409791][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 192.410098][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 192.410098][ T72] netdev_get_by_index+0x5e/0x80 [ 192.410098][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.410098][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.410098][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.410098][ T72] ipv6_add_addr+0x411/0x2000 [ 192.410098][ T72] inet6_addr_add+0x30e/0xa40 [ 192.410098][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.410098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.410098][ T72] netlink_rcv_skb+0x130/0x360 [ 192.410098][ T72] netlink_unicast+0x449/0x710 [ 192.410098][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.410098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.410098][ T72] ___sys_sendmsg+0xee/0x170 [ 192.410098][ T72] __sys_sendmsg+0xcd/0x170 [ 192.410098][ T72] do_syscall_64+0xc6/0x1e0 [ 192.410098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.410098][ T72] [ 192.412535][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 192.412535][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.412535][ T72] ipv6_find_idev+0x102/0x170 [ 192.412535][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.412535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.412535][ T72] netlink_rcv_skb+0x130/0x360 [ 192.412535][ T72] netlink_unicast+0x449/0x710 [ 192.412535][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.412535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.412535][ T72] ___sys_sendmsg+0xee/0x170 [ 192.412535][ T72] __sys_sendmsg+0xcd/0x170 [ 192.412535][ T72] do_syscall_64+0xc6/0x1e0 [ 192.412535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.412535][ T72] [ 192.414404][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 192.414404][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.414404][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.414404][ T72] ipv6_find_idev+0x102/0x170 [ 192.414404][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.414404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.414404][ T72] netlink_rcv_skb+0x130/0x360 [ 192.414404][ T72] netlink_unicast+0x449/0x710 [ 192.414404][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.414404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.414404][ T72] ___sys_sendmsg+0xee/0x170 [ 192.414404][ T72] __sys_sendmsg+0xcd/0x170 [ 192.414404][ T72] do_syscall_64+0xc6/0x1e0 [ 192.414404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.414404][ T72] [ 192.416469][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 192.416855][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 192.416855][ T72] netdev_get_by_index+0x5e/0x80 [ 192.416855][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.416855][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.416855][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.416855][ T72] ipv6_add_addr+0x411/0x2000 [ 192.416855][ T72] inet6_addr_add+0x30e/0xa40 [ 192.416855][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.416855][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.416855][ T72] netlink_rcv_skb+0x130/0x360 [ 192.416855][ T72] netlink_unicast+0x449/0x710 [ 192.416855][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.416855][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.416855][ T72] ___sys_sendmsg+0xee/0x170 [ 192.416855][ T72] __sys_sendmsg+0xcd/0x170 [ 192.416855][ T72] do_syscall_64+0xc6/0x1e0 [ 192.416855][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.416855][ T72] [ 192.419353][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 192.419353][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.419353][ T72] ipv6_find_idev+0x102/0x170 [ 192.419353][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.419353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.419353][ T72] netlink_rcv_skb+0x130/0x360 [ 192.419353][ T72] netlink_unicast+0x449/0x710 [ 192.419353][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.419353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.419353][ T72] ___sys_sendmsg+0xee/0x170 [ 192.419353][ T72] __sys_sendmsg+0xcd/0x170 [ 192.419353][ T72] do_syscall_64+0xc6/0x1e0 [ 192.419353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.419353][ T72] [ 192.421467][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 192.421467][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.421467][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.421467][ T72] ipv6_find_idev+0x102/0x170 [ 192.421467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.421467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.421467][ T72] netlink_rcv_skb+0x130/0x360 [ 192.421467][ T72] netlink_unicast+0x449/0x710 [ 192.421467][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.421467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.421467][ T72] ___sys_sendmsg+0xee/0x170 [ 192.421467][ T72] __sys_sendmsg+0xcd/0x170 [ 192.421467][ T72] do_syscall_64+0xc6/0x1e0 [ 192.421467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.421467][ T72] [ 192.423654][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 192.424038][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 192.424038][ T72] netdev_get_by_index+0x5e/0x80 [ 192.424038][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.424038][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.424038][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.424038][ T72] ipv6_add_addr+0x411/0x2000 [ 192.424038][ T72] inet6_addr_add+0x30e/0xa40 [ 192.424038][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.424038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.424038][ T72] netlink_rcv_skb+0x130/0x360 [ 192.424038][ T72] netlink_unicast+0x449/0x710 [ 192.424038][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.424038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.424038][ T72] ___sys_sendmsg+0xee/0x170 [ 192.424038][ T72] __sys_sendmsg+0xcd/0x170 [ 192.424038][ T72] do_syscall_64+0xc6/0x1e0 [ 192.424038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.424038][ T72] [ 192.426580][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 192.426580][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.426580][ T72] ipv6_find_idev+0x102/0x170 [ 192.426580][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.426580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.426580][ T72] netlink_rcv_skb+0x130/0x360 [ 192.426580][ T72] netlink_unicast+0x449/0x710 [ 192.426580][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.426580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.426580][ T72] ___sys_sendmsg+0xee/0x170 [ 192.426580][ T72] __sys_sendmsg+0xcd/0x170 [ 192.426580][ T72] do_syscall_64+0xc6/0x1e0 [ 192.426580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.426580][ T72] [ 192.428612][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 192.428612][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.428612][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.428612][ T72] ipv6_find_idev+0x102/0x170 [ 192.428612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.428612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.428612][ T72] netlink_rcv_skb+0x130/0x360 [ 192.428612][ T72] netlink_unicast+0x449/0x710 [ 192.428612][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.428612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.428612][ T72] ___sys_sendmsg+0xee/0x170 [ 192.428612][ T72] __sys_sendmsg+0xcd/0x170 [ 192.428612][ T72] do_syscall_64+0xc6/0x1e0 [ 192.428612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.428612][ T72] [ 192.430825][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 192.431126][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 192.431126][ T72] netdev_get_by_index+0x5e/0x80 [ 192.431126][ T72] fib6_nh_init+0x3d8/0x15b0 [ 192.431126][ T72] ip6_route_info_create+0xf18/0x17d0 [ 192.431126][ T72] addrconf_f6i_alloc+0x244/0x410 [ 192.431126][ T72] ipv6_add_addr+0x411/0x2000 [ 192.431126][ T72] inet6_addr_add+0x30e/0xa40 [ 192.431126][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 192.431126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.431126][ T72] netlink_rcv_skb+0x130/0x360 [ 192.431126][ T72] netlink_unicast+0x449/0x710 [ 192.431126][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.431126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.431126][ T72] ___sys_sendmsg+0xee/0x170 [ 192.431126][ T72] __sys_sendmsg+0xcd/0x170 [ 192.431126][ T72] do_syscall_64+0xc6/0x1e0 [ 192.431126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.431126][ T72] [ 192.433832][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 192.433832][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 192.433832][ T72] ipv6_find_idev+0x102/0x170 [ 192.433832][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.433832][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.433832][ T72] netlink_rcv_skb+0x130/0x360 [ 192.433832][ T72] netlink_unicast+0x449/0x710 [ 192.433832][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.433832][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.433832][ T72] ___sys_sendmsg+0xee/0x170 [ 192.433832][ T72] __sys_sendmsg+0xcd/0x170 [ 192.433832][ T72] do_syscall_64+0xc6/0x1e0 [ 192.433832][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.433832][ T72] [ 192.435850][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 192.435850][ T72] neigh_parms_alloc+0x1e5/0x510 [ 192.435850][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 192.435850][ T72] ipv6_find_idev+0x102/0x170 [ 192.435850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 192.435850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 192.435850][ T72] netlink_rcv_skb+0x130/0x360 [ 192.435850][ T72] netlink_unicast+0x449/0x710 [ 192.435850][ T72] netlink_sendmsg+0x723/0xbe0 [ 192.435850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 192.435850][ T72] ___sys_sendmsg+0xee/0x170 [ 192.435850][ T72] __sys_sendmsg+0xcd/0x170 [ 192.435850][ T72] do_syscall_64+0xc6/0x1e0 [ 192.435850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 192.435850][ T72] [ 202.438825][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 202.439338][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 202.439338][ T72] netdev_get_by_index+0x5e/0x80 [ 202.439338][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.439338][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.439338][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.439338][ T72] ipv6_add_addr+0x411/0x2000 [ 202.439338][ T72] inet6_addr_add+0x30e/0xa40 [ 202.439338][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.439338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.439338][ T72] netlink_rcv_skb+0x130/0x360 [ 202.439338][ T72] netlink_unicast+0x449/0x710 [ 202.439338][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.439338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.439338][ T72] ___sys_sendmsg+0xee/0x170 [ 202.439338][ T72] __sys_sendmsg+0xcd/0x170 [ 202.439338][ T72] do_syscall_64+0xc6/0x1e0 [ 202.439338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.439338][ T72] [ 202.442549][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 202.442549][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.442549][ T72] ipv6_find_idev+0x102/0x170 [ 202.442549][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.442549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.442549][ T72] netlink_rcv_skb+0x130/0x360 [ 202.442549][ T72] netlink_unicast+0x449/0x710 [ 202.442549][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.442549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.442549][ T72] ___sys_sendmsg+0xee/0x170 [ 202.442549][ T72] __sys_sendmsg+0xcd/0x170 [ 202.442549][ T72] do_syscall_64+0xc6/0x1e0 [ 202.442549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.442549][ T72] [ 202.444992][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 202.444992][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.444992][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.444992][ T72] ipv6_find_idev+0x102/0x170 [ 202.444992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.444992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.444992][ T72] netlink_rcv_skb+0x130/0x360 [ 202.444992][ T72] netlink_unicast+0x449/0x710 [ 202.444992][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.444992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.444992][ T72] ___sys_sendmsg+0xee/0x170 [ 202.444992][ T72] __sys_sendmsg+0xcd/0x170 [ 202.444992][ T72] do_syscall_64+0xc6/0x1e0 [ 202.444992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.444992][ T72] [ 202.447688][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 202.448144][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 202.448144][ T72] netdev_get_by_index+0x5e/0x80 [ 202.448144][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.448144][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.448144][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.448144][ T72] ipv6_add_addr+0x411/0x2000 [ 202.448144][ T72] inet6_addr_add+0x30e/0xa40 [ 202.448144][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.448144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.448144][ T72] netlink_rcv_skb+0x130/0x360 [ 202.448144][ T72] netlink_unicast+0x449/0x710 [ 202.448144][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.448144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.448144][ T72] ___sys_sendmsg+0xee/0x170 [ 202.448144][ T72] __sys_sendmsg+0xcd/0x170 [ 202.448144][ T72] do_syscall_64+0xc6/0x1e0 [ 202.448144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.448144][ T72] [ 202.451340][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 202.451340][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.451340][ T72] ipv6_find_idev+0x102/0x170 [ 202.451340][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.451340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.451340][ T72] netlink_rcv_skb+0x130/0x360 [ 202.451340][ T72] netlink_unicast+0x449/0x710 [ 202.451340][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.451340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.451340][ T72] ___sys_sendmsg+0xee/0x170 [ 202.451340][ T72] __sys_sendmsg+0xcd/0x170 [ 202.451340][ T72] do_syscall_64+0xc6/0x1e0 [ 202.451340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.451340][ T72] [ 202.453831][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 202.453831][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.453831][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.453831][ T72] ipv6_find_idev+0x102/0x170 [ 202.453831][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.453831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.453831][ T72] netlink_rcv_skb+0x130/0x360 [ 202.453831][ T72] netlink_unicast+0x449/0x710 [ 202.453831][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.453831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.453831][ T72] ___sys_sendmsg+0xee/0x170 [ 202.453831][ T72] __sys_sendmsg+0xcd/0x170 [ 202.453831][ T72] do_syscall_64+0xc6/0x1e0 [ 202.453831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.453831][ T72] [ 202.456514][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 202.456961][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 202.456961][ T72] netdev_get_by_index+0x5e/0x80 [ 202.456961][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.456961][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.456961][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.456961][ T72] ipv6_add_addr+0x411/0x2000 [ 202.456961][ T72] inet6_addr_add+0x30e/0xa40 [ 202.456961][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.456961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.456961][ T72] netlink_rcv_skb+0x130/0x360 [ 202.456961][ T72] netlink_unicast+0x449/0x710 [ 202.456961][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.456961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.456961][ T72] ___sys_sendmsg+0xee/0x170 [ 202.456961][ T72] __sys_sendmsg+0xcd/0x170 [ 202.456961][ T72] do_syscall_64+0xc6/0x1e0 [ 202.456961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.456961][ T72] [ 202.460158][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 202.460158][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.460158][ T72] ipv6_find_idev+0x102/0x170 [ 202.460158][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.460158][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.460158][ T72] netlink_rcv_skb+0x130/0x360 [ 202.460158][ T72] netlink_unicast+0x449/0x710 [ 202.460158][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.460158][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.460158][ T72] ___sys_sendmsg+0xee/0x170 [ 202.460158][ T72] __sys_sendmsg+0xcd/0x170 [ 202.460158][ T72] do_syscall_64+0xc6/0x1e0 [ 202.460158][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.460158][ T72] [ 202.462636][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 202.462636][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.462636][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.462636][ T72] ipv6_find_idev+0x102/0x170 [ 202.462636][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.462636][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.462636][ T72] netlink_rcv_skb+0x130/0x360 [ 202.462636][ T72] netlink_unicast+0x449/0x710 [ 202.462636][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.462636][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.462636][ T72] ___sys_sendmsg+0xee/0x170 [ 202.462636][ T72] __sys_sendmsg+0xcd/0x170 [ 202.462636][ T72] do_syscall_64+0xc6/0x1e0 [ 202.462636][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.462636][ T72] [ 202.465320][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 202.465746][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 202.465746][ T72] netdev_get_by_index+0x5e/0x80 [ 202.465746][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.465746][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.465746][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.465746][ T72] ipv6_add_addr+0x411/0x2000 [ 202.465746][ T72] inet6_addr_add+0x30e/0xa40 [ 202.465746][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.465746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.465746][ T72] netlink_rcv_skb+0x130/0x360 [ 202.465746][ T72] netlink_unicast+0x449/0x710 [ 202.465746][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.465746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.465746][ T72] ___sys_sendmsg+0xee/0x170 [ 202.465746][ T72] __sys_sendmsg+0xcd/0x170 [ 202.465746][ T72] do_syscall_64+0xc6/0x1e0 [ 202.465746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.465746][ T72] [ 202.468922][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 202.468922][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.468922][ T72] ipv6_find_idev+0x102/0x170 [ 202.468922][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.468922][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.468922][ T72] netlink_rcv_skb+0x130/0x360 [ 202.468922][ T72] netlink_unicast+0x449/0x710 [ 202.468922][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.468922][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.468922][ T72] ___sys_sendmsg+0xee/0x170 [ 202.468922][ T72] __sys_sendmsg+0xcd/0x170 [ 202.468922][ T72] do_syscall_64+0xc6/0x1e0 [ 202.468922][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.468922][ T72] [ 202.471387][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 202.471387][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.471387][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.471387][ T72] ipv6_find_idev+0x102/0x170 [ 202.471387][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.471387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.471387][ T72] netlink_rcv_skb+0x130/0x360 [ 202.471387][ T72] netlink_unicast+0x449/0x710 [ 202.471387][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.471387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.471387][ T72] ___sys_sendmsg+0xee/0x170 [ 202.471387][ T72] __sys_sendmsg+0xcd/0x170 [ 202.471387][ T72] do_syscall_64+0xc6/0x1e0 [ 202.471387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.471387][ T72] [ 202.474539][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 202.475254][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 202.475254][ T72] netdev_get_by_index+0x5e/0x80 [ 202.475254][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.475254][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.475254][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.475254][ T72] ipv6_add_addr+0x411/0x2000 [ 202.475254][ T72] inet6_addr_add+0x30e/0xa40 [ 202.475254][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.475254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.475254][ T72] netlink_rcv_skb+0x130/0x360 [ 202.475254][ T72] netlink_unicast+0x449/0x710 [ 202.475254][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.475254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.475254][ T72] ___sys_sendmsg+0xee/0x170 [ 202.475254][ T72] __sys_sendmsg+0xcd/0x170 [ 202.475254][ T72] do_syscall_64+0xc6/0x1e0 [ 202.475254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.475254][ T72] [ 202.478400][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 202.478400][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.478400][ T72] ipv6_find_idev+0x102/0x170 [ 202.478400][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.478400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.478400][ T72] netlink_rcv_skb+0x130/0x360 [ 202.478400][ T72] netlink_unicast+0x449/0x710 [ 202.478400][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.478400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.478400][ T72] ___sys_sendmsg+0xee/0x170 [ 202.478400][ T72] __sys_sendmsg+0xcd/0x170 [ 202.478400][ T72] do_syscall_64+0xc6/0x1e0 [ 202.478400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.478400][ T72] [ 202.480876][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 202.480876][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.480876][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.480876][ T72] ipv6_find_idev+0x102/0x170 [ 202.480876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.480876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.480876][ T72] netlink_rcv_skb+0x130/0x360 [ 202.480876][ T72] netlink_unicast+0x449/0x710 [ 202.480876][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.480876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.480876][ T72] ___sys_sendmsg+0xee/0x170 [ 202.480876][ T72] __sys_sendmsg+0xcd/0x170 [ 202.480876][ T72] do_syscall_64+0xc6/0x1e0 [ 202.480876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.480876][ T72] [ 202.483563][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 202.484061][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 202.484061][ T72] netdev_get_by_index+0x5e/0x80 [ 202.484061][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.484061][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.484061][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.484061][ T72] ipv6_add_addr+0x411/0x2000 [ 202.484061][ T72] inet6_addr_add+0x30e/0xa40 [ 202.484061][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.484061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.484061][ T72] netlink_rcv_skb+0x130/0x360 [ 202.484061][ T72] netlink_unicast+0x449/0x710 [ 202.484061][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.484061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.484061][ T72] ___sys_sendmsg+0xee/0x170 [ 202.484061][ T72] __sys_sendmsg+0xcd/0x170 [ 202.484061][ T72] do_syscall_64+0xc6/0x1e0 [ 202.484061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.484061][ T72] [ 202.487207][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 202.487207][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.487207][ T72] ipv6_find_idev+0x102/0x170 [ 202.487207][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.487207][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.487207][ T72] netlink_rcv_skb+0x130/0x360 [ 202.487207][ T72] netlink_unicast+0x449/0x710 [ 202.487207][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.487207][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.487207][ T72] ___sys_sendmsg+0xee/0x170 [ 202.487207][ T72] __sys_sendmsg+0xcd/0x170 [ 202.487207][ T72] do_syscall_64+0xc6/0x1e0 [ 202.487207][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.487207][ T72] [ 202.489657][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 202.489657][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.489657][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.489657][ T72] ipv6_find_idev+0x102/0x170 [ 202.489657][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.489657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.489657][ T72] netlink_rcv_skb+0x130/0x360 [ 202.489657][ T72] netlink_unicast+0x449/0x710 [ 202.489657][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.489657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.489657][ T72] ___sys_sendmsg+0xee/0x170 [ 202.489657][ T72] __sys_sendmsg+0xcd/0x170 [ 202.489657][ T72] do_syscall_64+0xc6/0x1e0 [ 202.489657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.489657][ T72] [ 202.492747][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 202.493180][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 202.493180][ T72] netdev_get_by_index+0x5e/0x80 [ 202.493180][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.493180][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.493180][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.493180][ T72] ipv6_add_addr+0x411/0x2000 [ 202.493180][ T72] inet6_addr_add+0x30e/0xa40 [ 202.493180][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.493180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.493180][ T72] netlink_rcv_skb+0x130/0x360 [ 202.493180][ T72] netlink_unicast+0x449/0x710 [ 202.493180][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.493180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.493180][ T72] ___sys_sendmsg+0xee/0x170 [ 202.493180][ T72] __sys_sendmsg+0xcd/0x170 [ 202.493180][ T72] do_syscall_64+0xc6/0x1e0 [ 202.493180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.493180][ T72] [ 202.496696][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 202.496696][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.496696][ T72] ipv6_find_idev+0x102/0x170 [ 202.496696][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.496696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.496696][ T72] netlink_rcv_skb+0x130/0x360 [ 202.496696][ T72] netlink_unicast+0x449/0x710 [ 202.496696][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.496696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.496696][ T72] ___sys_sendmsg+0xee/0x170 [ 202.496696][ T72] __sys_sendmsg+0xcd/0x170 [ 202.496696][ T72] do_syscall_64+0xc6/0x1e0 [ 202.496696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.496696][ T72] [ 202.499460][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 202.499460][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.499460][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.499460][ T72] ipv6_find_idev+0x102/0x170 [ 202.499460][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.499460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.499460][ T72] netlink_rcv_skb+0x130/0x360 [ 202.499460][ T72] netlink_unicast+0x449/0x710 [ 202.499460][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.499460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.499460][ T72] ___sys_sendmsg+0xee/0x170 [ 202.499460][ T72] __sys_sendmsg+0xcd/0x170 [ 202.499460][ T72] do_syscall_64+0xc6/0x1e0 [ 202.499460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.499460][ T72] [ 202.502601][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 202.503122][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 202.503122][ T72] netdev_get_by_index+0x5e/0x80 [ 202.503122][ T72] fib6_nh_init+0x3d8/0x15b0 [ 202.503122][ T72] ip6_route_info_create+0xf18/0x17d0 [ 202.503122][ T72] addrconf_f6i_alloc+0x244/0x410 [ 202.503122][ T72] ipv6_add_addr+0x411/0x2000 [ 202.503122][ T72] inet6_addr_add+0x30e/0xa40 [ 202.503122][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 202.503122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.503122][ T72] netlink_rcv_skb+0x130/0x360 [ 202.503122][ T72] netlink_unicast+0x449/0x710 [ 202.503122][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.503122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.503122][ T72] ___sys_sendmsg+0xee/0x170 [ 202.503122][ T72] __sys_sendmsg+0xcd/0x170 [ 202.503122][ T72] do_syscall_64+0xc6/0x1e0 [ 202.503122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.503122][ T72] [ 202.506534][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 202.506534][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 202.506534][ T72] ipv6_find_idev+0x102/0x170 [ 202.506534][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.506534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.506534][ T72] netlink_rcv_skb+0x130/0x360 [ 202.506534][ T72] netlink_unicast+0x449/0x710 [ 202.506534][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.506534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.506534][ T72] ___sys_sendmsg+0xee/0x170 [ 202.506534][ T72] __sys_sendmsg+0xcd/0x170 [ 202.506534][ T72] do_syscall_64+0xc6/0x1e0 [ 202.506534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.506534][ T72] [ 202.509329][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 202.509329][ T72] neigh_parms_alloc+0x1e5/0x510 [ 202.509329][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 202.509329][ T72] ipv6_find_idev+0x102/0x170 [ 202.509329][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 202.509329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 202.509329][ T72] netlink_rcv_skb+0x130/0x360 [ 202.509329][ T72] netlink_unicast+0x449/0x710 [ 202.509329][ T72] netlink_sendmsg+0x723/0xbe0 [ 202.509329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 202.509329][ T72] ___sys_sendmsg+0xee/0x170 [ 202.509329][ T72] __sys_sendmsg+0xcd/0x170 [ 202.509329][ T72] do_syscall_64+0xc6/0x1e0 [ 202.509329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 202.509329][ T72] [ 212.542923][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 212.543309][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 212.543309][ T72] netdev_get_by_index+0x5e/0x80 [ 212.543309][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.543309][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.543309][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.543309][ T72] ipv6_add_addr+0x411/0x2000 [ 212.543309][ T72] inet6_addr_add+0x30e/0xa40 [ 212.543309][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.543309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.543309][ T72] netlink_rcv_skb+0x130/0x360 [ 212.543309][ T72] netlink_unicast+0x449/0x710 [ 212.543309][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.543309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.543309][ T72] ___sys_sendmsg+0xee/0x170 [ 212.543309][ T72] __sys_sendmsg+0xcd/0x170 [ 212.543309][ T72] do_syscall_64+0xc6/0x1e0 [ 212.543309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.543309][ T72] [ 212.545325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 212.545325][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.545325][ T72] ipv6_find_idev+0x102/0x170 [ 212.545325][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.545325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.545325][ T72] netlink_rcv_skb+0x130/0x360 [ 212.545325][ T72] netlink_unicast+0x449/0x710 [ 212.545325][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.545325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.545325][ T72] ___sys_sendmsg+0xee/0x170 [ 212.545325][ T72] __sys_sendmsg+0xcd/0x170 [ 212.545325][ T72] do_syscall_64+0xc6/0x1e0 [ 212.545325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.545325][ T72] [ 212.546844][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 212.546844][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.546844][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.546844][ T72] ipv6_find_idev+0x102/0x170 [ 212.546844][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.546844][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.546844][ T72] netlink_rcv_skb+0x130/0x360 [ 212.546844][ T72] netlink_unicast+0x449/0x710 [ 212.546844][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.546844][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.546844][ T72] ___sys_sendmsg+0xee/0x170 [ 212.546844][ T72] __sys_sendmsg+0xcd/0x170 [ 212.546844][ T72] do_syscall_64+0xc6/0x1e0 [ 212.546844][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.546844][ T72] [ 212.548541][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 212.548828][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 212.548828][ T72] netdev_get_by_index+0x5e/0x80 [ 212.548828][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.548828][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.548828][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.548828][ T72] ipv6_add_addr+0x411/0x2000 [ 212.548828][ T72] inet6_addr_add+0x30e/0xa40 [ 212.548828][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.548828][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.548828][ T72] netlink_rcv_skb+0x130/0x360 [ 212.548828][ T72] netlink_unicast+0x449/0x710 [ 212.548828][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.548828][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.548828][ T72] ___sys_sendmsg+0xee/0x170 [ 212.548828][ T72] __sys_sendmsg+0xcd/0x170 [ 212.548828][ T72] do_syscall_64+0xc6/0x1e0 [ 212.548828][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.548828][ T72] [ 212.550838][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 212.550838][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.550838][ T72] ipv6_find_idev+0x102/0x170 [ 212.550838][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.550838][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.550838][ T72] netlink_rcv_skb+0x130/0x360 [ 212.550838][ T72] netlink_unicast+0x449/0x710 [ 212.550838][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.550838][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.550838][ T72] ___sys_sendmsg+0xee/0x170 [ 212.550838][ T72] __sys_sendmsg+0xcd/0x170 [ 212.550838][ T72] do_syscall_64+0xc6/0x1e0 [ 212.550838][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.550838][ T72] [ 212.552358][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 212.552358][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.552358][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.552358][ T72] ipv6_find_idev+0x102/0x170 [ 212.552358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.552358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.552358][ T72] netlink_rcv_skb+0x130/0x360 [ 212.552358][ T72] netlink_unicast+0x449/0x710 [ 212.552358][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.552358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.552358][ T72] ___sys_sendmsg+0xee/0x170 [ 212.552358][ T72] __sys_sendmsg+0xcd/0x170 [ 212.552358][ T72] do_syscall_64+0xc6/0x1e0 [ 212.552358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.552358][ T72] [ 212.554030][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 212.554293][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 212.554293][ T72] netdev_get_by_index+0x5e/0x80 [ 212.554293][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.554293][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.554293][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.554293][ T72] ipv6_add_addr+0x411/0x2000 [ 212.554293][ T72] inet6_addr_add+0x30e/0xa40 [ 212.554293][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.554293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.554293][ T72] netlink_rcv_skb+0x130/0x360 [ 212.554293][ T72] netlink_unicast+0x449/0x710 [ 212.554293][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.554293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.554293][ T72] ___sys_sendmsg+0xee/0x170 [ 212.554293][ T72] __sys_sendmsg+0xcd/0x170 [ 212.554293][ T72] do_syscall_64+0xc6/0x1e0 [ 212.554293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.554293][ T72] [ 212.556276][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 212.556276][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.556276][ T72] ipv6_find_idev+0x102/0x170 [ 212.556276][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.556276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.556276][ T72] netlink_rcv_skb+0x130/0x360 [ 212.556276][ T72] netlink_unicast+0x449/0x710 [ 212.556276][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.556276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.556276][ T72] ___sys_sendmsg+0xee/0x170 [ 212.556276][ T72] __sys_sendmsg+0xcd/0x170 [ 212.556276][ T72] do_syscall_64+0xc6/0x1e0 [ 212.556276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.556276][ T72] [ 212.557808][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 212.557808][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.557808][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.557808][ T72] ipv6_find_idev+0x102/0x170 [ 212.557808][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.557808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.557808][ T72] netlink_rcv_skb+0x130/0x360 [ 212.557808][ T72] netlink_unicast+0x449/0x710 [ 212.557808][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.557808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.557808][ T72] ___sys_sendmsg+0xee/0x170 [ 212.557808][ T72] __sys_sendmsg+0xcd/0x170 [ 212.557808][ T72] do_syscall_64+0xc6/0x1e0 [ 212.557808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.557808][ T72] [ 212.559469][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 212.559736][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 212.559736][ T72] netdev_get_by_index+0x5e/0x80 [ 212.559736][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.559736][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.559736][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.559736][ T72] ipv6_add_addr+0x411/0x2000 [ 212.559736][ T72] inet6_addr_add+0x30e/0xa40 [ 212.559736][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.559736][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.559736][ T72] netlink_rcv_skb+0x130/0x360 [ 212.559736][ T72] netlink_unicast+0x449/0x710 [ 212.559736][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.559736][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.559736][ T72] ___sys_sendmsg+0xee/0x170 [ 212.559736][ T72] __sys_sendmsg+0xcd/0x170 [ 212.559736][ T72] do_syscall_64+0xc6/0x1e0 [ 212.559736][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.559736][ T72] [ 212.561717][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 212.561717][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.561717][ T72] ipv6_find_idev+0x102/0x170 [ 212.561717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.561717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.561717][ T72] netlink_rcv_skb+0x130/0x360 [ 212.561717][ T72] netlink_unicast+0x449/0x710 [ 212.561717][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.561717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.561717][ T72] ___sys_sendmsg+0xee/0x170 [ 212.561717][ T72] __sys_sendmsg+0xcd/0x170 [ 212.561717][ T72] do_syscall_64+0xc6/0x1e0 [ 212.561717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.561717][ T72] [ 212.563252][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 212.563252][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.563252][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.563252][ T72] ipv6_find_idev+0x102/0x170 [ 212.563252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.563252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.563252][ T72] netlink_rcv_skb+0x130/0x360 [ 212.563252][ T72] netlink_unicast+0x449/0x710 [ 212.563252][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.563252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.563252][ T72] ___sys_sendmsg+0xee/0x170 [ 212.563252][ T72] __sys_sendmsg+0xcd/0x170 [ 212.563252][ T72] do_syscall_64+0xc6/0x1e0 [ 212.563252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.563252][ T72] [ 212.565325][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 212.565595][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 212.565595][ T72] netdev_get_by_index+0x5e/0x80 [ 212.565595][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.565595][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.565595][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.565595][ T72] ipv6_add_addr+0x411/0x2000 [ 212.565595][ T72] inet6_addr_add+0x30e/0xa40 [ 212.565595][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.565595][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.565595][ T72] netlink_rcv_skb+0x130/0x360 [ 212.565595][ T72] netlink_unicast+0x449/0x710 [ 212.565595][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.565595][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.565595][ T72] ___sys_sendmsg+0xee/0x170 [ 212.565595][ T72] __sys_sendmsg+0xcd/0x170 [ 212.565595][ T72] do_syscall_64+0xc6/0x1e0 [ 212.565595][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.565595][ T72] [ 212.567569][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 212.567569][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.567569][ T72] ipv6_find_idev+0x102/0x170 [ 212.567569][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.567569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.567569][ T72] netlink_rcv_skb+0x130/0x360 [ 212.567569][ T72] netlink_unicast+0x449/0x710 [ 212.567569][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.567569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.567569][ T72] ___sys_sendmsg+0xee/0x170 [ 212.567569][ T72] __sys_sendmsg+0xcd/0x170 [ 212.567569][ T72] do_syscall_64+0xc6/0x1e0 [ 212.567569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.567569][ T72] [ 212.569085][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 212.569085][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.569085][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.569085][ T72] ipv6_find_idev+0x102/0x170 [ 212.569085][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.569085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.569085][ T72] netlink_rcv_skb+0x130/0x360 [ 212.569085][ T72] netlink_unicast+0x449/0x710 [ 212.569085][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.569085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.569085][ T72] ___sys_sendmsg+0xee/0x170 [ 212.569085][ T72] __sys_sendmsg+0xcd/0x170 [ 212.569085][ T72] do_syscall_64+0xc6/0x1e0 [ 212.569085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.569085][ T72] [ 212.570803][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 212.571064][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 212.571064][ T72] netdev_get_by_index+0x5e/0x80 [ 212.571064][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.571064][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.571064][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.571064][ T72] ipv6_add_addr+0x411/0x2000 [ 212.571064][ T72] inet6_addr_add+0x30e/0xa40 [ 212.571064][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.571064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.571064][ T72] netlink_rcv_skb+0x130/0x360 [ 212.571064][ T72] netlink_unicast+0x449/0x710 [ 212.571064][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.571064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.571064][ T72] ___sys_sendmsg+0xee/0x170 [ 212.571064][ T72] __sys_sendmsg+0xcd/0x170 [ 212.571064][ T72] do_syscall_64+0xc6/0x1e0 [ 212.571064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.571064][ T72] [ 212.573170][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 212.573170][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.573170][ T72] ipv6_find_idev+0x102/0x170 [ 212.573170][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.573170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.573170][ T72] netlink_rcv_skb+0x130/0x360 [ 212.573170][ T72] netlink_unicast+0x449/0x710 [ 212.573170][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.573170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.573170][ T72] ___sys_sendmsg+0xee/0x170 [ 212.573170][ T72] __sys_sendmsg+0xcd/0x170 [ 212.573170][ T72] do_syscall_64+0xc6/0x1e0 [ 212.573170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.573170][ T72] [ 212.574869][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 212.574869][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.574869][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.574869][ T72] ipv6_find_idev+0x102/0x170 [ 212.574869][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.574869][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.574869][ T72] netlink_rcv_skb+0x130/0x360 [ 212.574869][ T72] netlink_unicast+0x449/0x710 [ 212.574869][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.574869][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.574869][ T72] ___sys_sendmsg+0xee/0x170 [ 212.574869][ T72] __sys_sendmsg+0xcd/0x170 [ 212.574869][ T72] do_syscall_64+0xc6/0x1e0 [ 212.574869][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.574869][ T72] [ 212.576764][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 212.577029][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 212.577029][ T72] netdev_get_by_index+0x5e/0x80 [ 212.577029][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.577029][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.577029][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.577029][ T72] ipv6_add_addr+0x411/0x2000 [ 212.577029][ T72] inet6_addr_add+0x30e/0xa40 [ 212.577029][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.577029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.577029][ T72] netlink_rcv_skb+0x130/0x360 [ 212.577029][ T72] netlink_unicast+0x449/0x710 [ 212.577029][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.577029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.577029][ T72] ___sys_sendmsg+0xee/0x170 [ 212.577029][ T72] __sys_sendmsg+0xcd/0x170 [ 212.577029][ T72] do_syscall_64+0xc6/0x1e0 [ 212.577029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.577029][ T72] [ 212.579286][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 212.579286][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.579286][ T72] ipv6_find_idev+0x102/0x170 [ 212.579286][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.579286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.579286][ T72] netlink_rcv_skb+0x130/0x360 [ 212.579286][ T72] netlink_unicast+0x449/0x710 [ 212.579286][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.579286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.579286][ T72] ___sys_sendmsg+0xee/0x170 [ 212.579286][ T72] __sys_sendmsg+0xcd/0x170 [ 212.579286][ T72] do_syscall_64+0xc6/0x1e0 [ 212.579286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.579286][ T72] [ 212.580996][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 212.580996][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.580996][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.580996][ T72] ipv6_find_idev+0x102/0x170 [ 212.580996][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.580996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.580996][ T72] netlink_rcv_skb+0x130/0x360 [ 212.580996][ T72] netlink_unicast+0x449/0x710 [ 212.580996][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.580996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.580996][ T72] ___sys_sendmsg+0xee/0x170 [ 212.580996][ T72] __sys_sendmsg+0xcd/0x170 [ 212.580996][ T72] do_syscall_64+0xc6/0x1e0 [ 212.580996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.580996][ T72] [ 212.582881][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 212.583199][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 212.583199][ T72] netdev_get_by_index+0x5e/0x80 [ 212.583199][ T72] fib6_nh_init+0x3d8/0x15b0 [ 212.583199][ T72] ip6_route_info_create+0xf18/0x17d0 [ 212.583199][ T72] addrconf_f6i_alloc+0x244/0x410 [ 212.583199][ T72] ipv6_add_addr+0x411/0x2000 [ 212.583199][ T72] inet6_addr_add+0x30e/0xa40 [ 212.583199][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 212.583199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.583199][ T72] netlink_rcv_skb+0x130/0x360 [ 212.583199][ T72] netlink_unicast+0x449/0x710 [ 212.583199][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.583199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.583199][ T72] ___sys_sendmsg+0xee/0x170 [ 212.583199][ T72] __sys_sendmsg+0xcd/0x170 [ 212.583199][ T72] do_syscall_64+0xc6/0x1e0 [ 212.583199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.583199][ T72] [ 212.585361][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 212.585361][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 212.585361][ T72] ipv6_find_idev+0x102/0x170 [ 212.585361][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.585361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.585361][ T72] netlink_rcv_skb+0x130/0x360 [ 212.585361][ T72] netlink_unicast+0x449/0x710 [ 212.585361][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.585361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.585361][ T72] ___sys_sendmsg+0xee/0x170 [ 212.585361][ T72] __sys_sendmsg+0xcd/0x170 [ 212.585361][ T72] do_syscall_64+0xc6/0x1e0 [ 212.585361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.585361][ T72] [ 212.587054][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 212.587054][ T72] neigh_parms_alloc+0x1e5/0x510 [ 212.587054][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 212.587054][ T72] ipv6_find_idev+0x102/0x170 [ 212.587054][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 212.587054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 212.587054][ T72] netlink_rcv_skb+0x130/0x360 [ 212.587054][ T72] netlink_unicast+0x449/0x710 [ 212.587054][ T72] netlink_sendmsg+0x723/0xbe0 [ 212.587054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 212.587054][ T72] ___sys_sendmsg+0xee/0x170 [ 212.587054][ T72] __sys_sendmsg+0xcd/0x170 [ 212.587054][ T72] do_syscall_64+0xc6/0x1e0 [ 212.587054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 212.587054][ T72] [ 222.614878][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 222.615281][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 222.615281][ T72] netdev_get_by_index+0x5e/0x80 [ 222.615281][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.615281][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.615281][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.615281][ T72] ipv6_add_addr+0x411/0x2000 [ 222.615281][ T72] inet6_addr_add+0x30e/0xa40 [ 222.615281][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.615281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.615281][ T72] netlink_rcv_skb+0x130/0x360 [ 222.615281][ T72] netlink_unicast+0x449/0x710 [ 222.615281][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.615281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.615281][ T72] ___sys_sendmsg+0xee/0x170 [ 222.615281][ T72] __sys_sendmsg+0xcd/0x170 [ 222.615281][ T72] do_syscall_64+0xc6/0x1e0 [ 222.615281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.615281][ T72] [ 222.617281][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 222.617281][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.617281][ T72] ipv6_find_idev+0x102/0x170 [ 222.617281][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.617281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.617281][ T72] netlink_rcv_skb+0x130/0x360 [ 222.617281][ T72] netlink_unicast+0x449/0x710 [ 222.617281][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.617281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.617281][ T72] ___sys_sendmsg+0xee/0x170 [ 222.617281][ T72] __sys_sendmsg+0xcd/0x170 [ 222.617281][ T72] do_syscall_64+0xc6/0x1e0 [ 222.617281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.617281][ T72] [ 222.618852][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 222.618852][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.618852][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.618852][ T72] ipv6_find_idev+0x102/0x170 [ 222.618852][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.618852][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.618852][ T72] netlink_rcv_skb+0x130/0x360 [ 222.618852][ T72] netlink_unicast+0x449/0x710 [ 222.618852][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.618852][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.618852][ T72] ___sys_sendmsg+0xee/0x170 [ 222.618852][ T72] __sys_sendmsg+0xcd/0x170 [ 222.618852][ T72] do_syscall_64+0xc6/0x1e0 [ 222.618852][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.618852][ T72] [ 222.620551][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 222.620859][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 222.620859][ T72] netdev_get_by_index+0x5e/0x80 [ 222.620859][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.620859][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.620859][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.620859][ T72] ipv6_add_addr+0x411/0x2000 [ 222.620859][ T72] inet6_addr_add+0x30e/0xa40 [ 222.620859][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.620859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.620859][ T72] netlink_rcv_skb+0x130/0x360 [ 222.620859][ T72] netlink_unicast+0x449/0x710 [ 222.620859][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.620859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.620859][ T72] ___sys_sendmsg+0xee/0x170 [ 222.620859][ T72] __sys_sendmsg+0xcd/0x170 [ 222.620859][ T72] do_syscall_64+0xc6/0x1e0 [ 222.620859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.620859][ T72] [ 222.622847][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 222.622847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.622847][ T72] ipv6_find_idev+0x102/0x170 [ 222.622847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.622847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.622847][ T72] netlink_rcv_skb+0x130/0x360 [ 222.622847][ T72] netlink_unicast+0x449/0x710 [ 222.622847][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.622847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.622847][ T72] ___sys_sendmsg+0xee/0x170 [ 222.622847][ T72] __sys_sendmsg+0xcd/0x170 [ 222.622847][ T72] do_syscall_64+0xc6/0x1e0 [ 222.622847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.622847][ T72] [ 222.624371][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 222.624371][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.624371][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.624371][ T72] ipv6_find_idev+0x102/0x170 [ 222.624371][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.624371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.624371][ T72] netlink_rcv_skb+0x130/0x360 [ 222.624371][ T72] netlink_unicast+0x449/0x710 [ 222.624371][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.624371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.624371][ T72] ___sys_sendmsg+0xee/0x170 [ 222.624371][ T72] __sys_sendmsg+0xcd/0x170 [ 222.624371][ T72] do_syscall_64+0xc6/0x1e0 [ 222.624371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.624371][ T72] [ 222.626089][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 222.626375][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 222.626375][ T72] netdev_get_by_index+0x5e/0x80 [ 222.626375][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.626375][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.626375][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.626375][ T72] ipv6_add_addr+0x411/0x2000 [ 222.626375][ T72] inet6_addr_add+0x30e/0xa40 [ 222.626375][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.626375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.626375][ T72] netlink_rcv_skb+0x130/0x360 [ 222.626375][ T72] netlink_unicast+0x449/0x710 [ 222.626375][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.626375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.626375][ T72] ___sys_sendmsg+0xee/0x170 [ 222.626375][ T72] __sys_sendmsg+0xcd/0x170 [ 222.626375][ T72] do_syscall_64+0xc6/0x1e0 [ 222.626375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.626375][ T72] [ 222.628359][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 222.628359][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.628359][ T72] ipv6_find_idev+0x102/0x170 [ 222.628359][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.628359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.628359][ T72] netlink_rcv_skb+0x130/0x360 [ 222.628359][ T72] netlink_unicast+0x449/0x710 [ 222.628359][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.628359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.628359][ T72] ___sys_sendmsg+0xee/0x170 [ 222.628359][ T72] __sys_sendmsg+0xcd/0x170 [ 222.628359][ T72] do_syscall_64+0xc6/0x1e0 [ 222.628359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.628359][ T72] [ 222.629880][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 222.629880][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.629880][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.629880][ T72] ipv6_find_idev+0x102/0x170 [ 222.629880][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.629880][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.629880][ T72] netlink_rcv_skb+0x130/0x360 [ 222.629880][ T72] netlink_unicast+0x449/0x710 [ 222.629880][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.629880][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.629880][ T72] ___sys_sendmsg+0xee/0x170 [ 222.629880][ T72] __sys_sendmsg+0xcd/0x170 [ 222.629880][ T72] do_syscall_64+0xc6/0x1e0 [ 222.629880][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.629880][ T72] [ 222.631547][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 222.632268][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 222.632268][ T72] netdev_get_by_index+0x5e/0x80 [ 222.632268][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.632268][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.632268][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.632268][ T72] ipv6_add_addr+0x411/0x2000 [ 222.632268][ T72] inet6_addr_add+0x30e/0xa40 [ 222.632268][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.632268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.632268][ T72] netlink_rcv_skb+0x130/0x360 [ 222.632268][ T72] netlink_unicast+0x449/0x710 [ 222.632268][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.632268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.632268][ T72] ___sys_sendmsg+0xee/0x170 [ 222.632268][ T72] __sys_sendmsg+0xcd/0x170 [ 222.632268][ T72] do_syscall_64+0xc6/0x1e0 [ 222.632268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.632268][ T72] [ 222.634237][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 222.634237][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.634237][ T72] ipv6_find_idev+0x102/0x170 [ 222.634237][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.634237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.634237][ T72] netlink_rcv_skb+0x130/0x360 [ 222.634237][ T72] netlink_unicast+0x449/0x710 [ 222.634237][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.634237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.634237][ T72] ___sys_sendmsg+0xee/0x170 [ 222.634237][ T72] __sys_sendmsg+0xcd/0x170 [ 222.634237][ T72] do_syscall_64+0xc6/0x1e0 [ 222.634237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.634237][ T72] [ 222.635753][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 222.635753][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.635753][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.635753][ T72] ipv6_find_idev+0x102/0x170 [ 222.635753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.635753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.635753][ T72] netlink_rcv_skb+0x130/0x360 [ 222.635753][ T72] netlink_unicast+0x449/0x710 [ 222.635753][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.635753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.635753][ T72] ___sys_sendmsg+0xee/0x170 [ 222.635753][ T72] __sys_sendmsg+0xcd/0x170 [ 222.635753][ T72] do_syscall_64+0xc6/0x1e0 [ 222.635753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.635753][ T72] [ 222.637595][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 222.637931][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 222.637931][ T72] netdev_get_by_index+0x5e/0x80 [ 222.637931][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.637931][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.637931][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.637931][ T72] ipv6_add_addr+0x411/0x2000 [ 222.637931][ T72] inet6_addr_add+0x30e/0xa40 [ 222.637931][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.637931][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.637931][ T72] netlink_rcv_skb+0x130/0x360 [ 222.637931][ T72] netlink_unicast+0x449/0x710 [ 222.637931][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.637931][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.637931][ T72] ___sys_sendmsg+0xee/0x170 [ 222.637931][ T72] __sys_sendmsg+0xcd/0x170 [ 222.637931][ T72] do_syscall_64+0xc6/0x1e0 [ 222.637931][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.637931][ T72] [ 222.639997][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 222.639997][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.639997][ T72] ipv6_find_idev+0x102/0x170 [ 222.639997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.639997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.639997][ T72] netlink_rcv_skb+0x130/0x360 [ 222.639997][ T72] netlink_unicast+0x449/0x710 [ 222.639997][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.639997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.639997][ T72] ___sys_sendmsg+0xee/0x170 [ 222.639997][ T72] __sys_sendmsg+0xcd/0x170 [ 222.639997][ T72] do_syscall_64+0xc6/0x1e0 [ 222.639997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.639997][ T72] [ 222.641593][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 222.641593][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.641593][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.641593][ T72] ipv6_find_idev+0x102/0x170 [ 222.641593][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.641593][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.641593][ T72] netlink_rcv_skb+0x130/0x360 [ 222.641593][ T72] netlink_unicast+0x449/0x710 [ 222.641593][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.641593][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.641593][ T72] ___sys_sendmsg+0xee/0x170 [ 222.641593][ T72] __sys_sendmsg+0xcd/0x170 [ 222.641593][ T72] do_syscall_64+0xc6/0x1e0 [ 222.641593][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.641593][ T72] [ 222.643405][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 222.643693][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 222.643693][ T72] netdev_get_by_index+0x5e/0x80 [ 222.643693][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.643693][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.643693][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.643693][ T72] ipv6_add_addr+0x411/0x2000 [ 222.643693][ T72] inet6_addr_add+0x30e/0xa40 [ 222.643693][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.643693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.643693][ T72] netlink_rcv_skb+0x130/0x360 [ 222.643693][ T72] netlink_unicast+0x449/0x710 [ 222.643693][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.643693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.643693][ T72] ___sys_sendmsg+0xee/0x170 [ 222.643693][ T72] __sys_sendmsg+0xcd/0x170 [ 222.643693][ T72] do_syscall_64+0xc6/0x1e0 [ 222.643693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.643693][ T72] [ 222.645817][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 222.645817][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.645817][ T72] ipv6_find_idev+0x102/0x170 [ 222.645817][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.645817][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.645817][ T72] netlink_rcv_skb+0x130/0x360 [ 222.645817][ T72] netlink_unicast+0x449/0x710 [ 222.645817][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.645817][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.645817][ T72] ___sys_sendmsg+0xee/0x170 [ 222.645817][ T72] __sys_sendmsg+0xcd/0x170 [ 222.645817][ T72] do_syscall_64+0xc6/0x1e0 [ 222.645817][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.645817][ T72] [ 222.647639][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 222.647639][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.647639][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.647639][ T72] ipv6_find_idev+0x102/0x170 [ 222.647639][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.647639][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.647639][ T72] netlink_rcv_skb+0x130/0x360 [ 222.647639][ T72] netlink_unicast+0x449/0x710 [ 222.647639][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.647639][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.647639][ T72] ___sys_sendmsg+0xee/0x170 [ 222.647639][ T72] __sys_sendmsg+0xcd/0x170 [ 222.647639][ T72] do_syscall_64+0xc6/0x1e0 [ 222.647639][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.647639][ T72] [ 222.649630][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 222.650010][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 222.650010][ T72] netdev_get_by_index+0x5e/0x80 [ 222.650010][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.650010][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.650010][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.650010][ T72] ipv6_add_addr+0x411/0x2000 [ 222.650010][ T72] inet6_addr_add+0x30e/0xa40 [ 222.650010][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.650010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.650010][ T72] netlink_rcv_skb+0x130/0x360 [ 222.650010][ T72] netlink_unicast+0x449/0x710 [ 222.650010][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.650010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.650010][ T72] ___sys_sendmsg+0xee/0x170 [ 222.650010][ T72] __sys_sendmsg+0xcd/0x170 [ 222.650010][ T72] do_syscall_64+0xc6/0x1e0 [ 222.650010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.650010][ T72] [ 222.652248][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 222.652248][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.652248][ T72] ipv6_find_idev+0x102/0x170 [ 222.652248][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.652248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.652248][ T72] netlink_rcv_skb+0x130/0x360 [ 222.652248][ T72] netlink_unicast+0x449/0x710 [ 222.652248][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.652248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.652248][ T72] ___sys_sendmsg+0xee/0x170 [ 222.652248][ T72] __sys_sendmsg+0xcd/0x170 [ 222.652248][ T72] do_syscall_64+0xc6/0x1e0 [ 222.652248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.652248][ T72] [ 222.654010][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 222.654010][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.654010][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.654010][ T72] ipv6_find_idev+0x102/0x170 [ 222.654010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.654010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.654010][ T72] netlink_rcv_skb+0x130/0x360 [ 222.654010][ T72] netlink_unicast+0x449/0x710 [ 222.654010][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.654010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.654010][ T72] ___sys_sendmsg+0xee/0x170 [ 222.654010][ T72] __sys_sendmsg+0xcd/0x170 [ 222.654010][ T72] do_syscall_64+0xc6/0x1e0 [ 222.654010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.654010][ T72] [ 222.656024][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 222.656312][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 222.656312][ T72] netdev_get_by_index+0x5e/0x80 [ 222.656312][ T72] fib6_nh_init+0x3d8/0x15b0 [ 222.656312][ T72] ip6_route_info_create+0xf18/0x17d0 [ 222.656312][ T72] addrconf_f6i_alloc+0x244/0x410 [ 222.656312][ T72] ipv6_add_addr+0x411/0x2000 [ 222.656312][ T72] inet6_addr_add+0x30e/0xa40 [ 222.656312][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 222.656312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.656312][ T72] netlink_rcv_skb+0x130/0x360 [ 222.656312][ T72] netlink_unicast+0x449/0x710 [ 222.656312][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.656312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.656312][ T72] ___sys_sendmsg+0xee/0x170 [ 222.656312][ T72] __sys_sendmsg+0xcd/0x170 [ 222.656312][ T72] do_syscall_64+0xc6/0x1e0 [ 222.656312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.656312][ T72] [ 222.658675][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 222.658675][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 222.658675][ T72] ipv6_find_idev+0x102/0x170 [ 222.658675][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.658675][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.658675][ T72] netlink_rcv_skb+0x130/0x360 [ 222.658675][ T72] netlink_unicast+0x449/0x710 [ 222.658675][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.658675][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.658675][ T72] ___sys_sendmsg+0xee/0x170 [ 222.658675][ T72] __sys_sendmsg+0xcd/0x170 [ 222.658675][ T72] do_syscall_64+0xc6/0x1e0 [ 222.658675][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.658675][ T72] [ 222.660458][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 222.660458][ T72] neigh_parms_alloc+0x1e5/0x510 [ 222.660458][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 222.660458][ T72] ipv6_find_idev+0x102/0x170 [ 222.660458][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 222.660458][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 222.660458][ T72] netlink_rcv_skb+0x130/0x360 [ 222.660458][ T72] netlink_unicast+0x449/0x710 [ 222.660458][ T72] netlink_sendmsg+0x723/0xbe0 [ 222.660458][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 222.660458][ T72] ___sys_sendmsg+0xee/0x170 [ 222.660458][ T72] __sys_sendmsg+0xcd/0x170 [ 222.660458][ T72] do_syscall_64+0xc6/0x1e0 [ 222.660458][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 222.660458][ T72] [ 232.726824][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 232.727243][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 232.727243][ T72] netdev_get_by_index+0x5e/0x80 [ 232.727243][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.727243][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.727243][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.727243][ T72] ipv6_add_addr+0x411/0x2000 [ 232.727243][ T72] inet6_addr_add+0x30e/0xa40 [ 232.727243][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.727243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.727243][ T72] netlink_rcv_skb+0x130/0x360 [ 232.727243][ T72] netlink_unicast+0x449/0x710 [ 232.727243][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.727243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.727243][ T72] ___sys_sendmsg+0xee/0x170 [ 232.727243][ T72] __sys_sendmsg+0xcd/0x170 [ 232.727243][ T72] do_syscall_64+0xc6/0x1e0 [ 232.727243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.727243][ T72] [ 232.729377][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 232.729377][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.729377][ T72] ipv6_find_idev+0x102/0x170 [ 232.729377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.729377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.729377][ T72] netlink_rcv_skb+0x130/0x360 [ 232.729377][ T72] netlink_unicast+0x449/0x710 [ 232.729377][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.729377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.729377][ T72] ___sys_sendmsg+0xee/0x170 [ 232.729377][ T72] __sys_sendmsg+0xcd/0x170 [ 232.729377][ T72] do_syscall_64+0xc6/0x1e0 [ 232.729377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.729377][ T72] [ 232.731033][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 232.731033][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.731033][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.731033][ T72] ipv6_find_idev+0x102/0x170 [ 232.731033][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.731033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.731033][ T72] netlink_rcv_skb+0x130/0x360 [ 232.731033][ T72] netlink_unicast+0x449/0x710 [ 232.731033][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.731033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.731033][ T72] ___sys_sendmsg+0xee/0x170 [ 232.731033][ T72] __sys_sendmsg+0xcd/0x170 [ 232.731033][ T72] do_syscall_64+0xc6/0x1e0 [ 232.731033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.731033][ T72] [ 232.732847][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 232.733119][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 232.733119][ T72] netdev_get_by_index+0x5e/0x80 [ 232.733119][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.733119][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.733119][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.733119][ T72] ipv6_add_addr+0x411/0x2000 [ 232.733119][ T72] inet6_addr_add+0x30e/0xa40 [ 232.733119][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.733119][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.733119][ T72] netlink_rcv_skb+0x130/0x360 [ 232.733119][ T72] netlink_unicast+0x449/0x710 [ 232.733119][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.733119][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.733119][ T72] ___sys_sendmsg+0xee/0x170 [ 232.733119][ T72] __sys_sendmsg+0xcd/0x170 [ 232.733119][ T72] do_syscall_64+0xc6/0x1e0 [ 232.733119][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.733119][ T72] [ 232.735268][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 232.735268][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.735268][ T72] ipv6_find_idev+0x102/0x170 [ 232.735268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.735268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.735268][ T72] netlink_rcv_skb+0x130/0x360 [ 232.735268][ T72] netlink_unicast+0x449/0x710 [ 232.735268][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.735268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.735268][ T72] ___sys_sendmsg+0xee/0x170 [ 232.735268][ T72] __sys_sendmsg+0xcd/0x170 [ 232.735268][ T72] do_syscall_64+0xc6/0x1e0 [ 232.735268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.735268][ T72] [ 232.736904][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 232.736904][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.736904][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.736904][ T72] ipv6_find_idev+0x102/0x170 [ 232.736904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.736904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.736904][ T72] netlink_rcv_skb+0x130/0x360 [ 232.736904][ T72] netlink_unicast+0x449/0x710 [ 232.736904][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.736904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.736904][ T72] ___sys_sendmsg+0xee/0x170 [ 232.736904][ T72] __sys_sendmsg+0xcd/0x170 [ 232.736904][ T72] do_syscall_64+0xc6/0x1e0 [ 232.736904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.736904][ T72] [ 232.738780][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 232.739067][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 232.739067][ T72] netdev_get_by_index+0x5e/0x80 [ 232.739067][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.739067][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.739067][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.739067][ T72] ipv6_add_addr+0x411/0x2000 [ 232.739067][ T72] inet6_addr_add+0x30e/0xa40 [ 232.739067][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.739067][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.739067][ T72] netlink_rcv_skb+0x130/0x360 [ 232.739067][ T72] netlink_unicast+0x449/0x710 [ 232.739067][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.739067][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.739067][ T72] ___sys_sendmsg+0xee/0x170 [ 232.739067][ T72] __sys_sendmsg+0xcd/0x170 [ 232.739067][ T72] do_syscall_64+0xc6/0x1e0 [ 232.739067][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.739067][ T72] [ 232.741148][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 232.741148][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.741148][ T72] ipv6_find_idev+0x102/0x170 [ 232.741148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.741148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.741148][ T72] netlink_rcv_skb+0x130/0x360 [ 232.741148][ T72] netlink_unicast+0x449/0x710 [ 232.741148][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.741148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.741148][ T72] ___sys_sendmsg+0xee/0x170 [ 232.741148][ T72] __sys_sendmsg+0xcd/0x170 [ 232.741148][ T72] do_syscall_64+0xc6/0x1e0 [ 232.741148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.741148][ T72] [ 232.742725][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 232.742725][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.742725][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.742725][ T72] ipv6_find_idev+0x102/0x170 [ 232.742725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.742725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.742725][ T72] netlink_rcv_skb+0x130/0x360 [ 232.742725][ T72] netlink_unicast+0x449/0x710 [ 232.742725][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.742725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.742725][ T72] ___sys_sendmsg+0xee/0x170 [ 232.742725][ T72] __sys_sendmsg+0xcd/0x170 [ 232.742725][ T72] do_syscall_64+0xc6/0x1e0 [ 232.742725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.742725][ T72] [ 232.744426][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 232.744692][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 232.744692][ T72] netdev_get_by_index+0x5e/0x80 [ 232.744692][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.744692][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.744692][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.744692][ T72] ipv6_add_addr+0x411/0x2000 [ 232.744692][ T72] inet6_addr_add+0x30e/0xa40 [ 232.744692][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.744692][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.744692][ T72] netlink_rcv_skb+0x130/0x360 [ 232.744692][ T72] netlink_unicast+0x449/0x710 [ 232.744692][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.744692][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.744692][ T72] ___sys_sendmsg+0xee/0x170 [ 232.744692][ T72] __sys_sendmsg+0xcd/0x170 [ 232.744692][ T72] do_syscall_64+0xc6/0x1e0 [ 232.744692][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.744692][ T72] [ 232.746713][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 232.746713][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.746713][ T72] ipv6_find_idev+0x102/0x170 [ 232.746713][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.746713][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.746713][ T72] netlink_rcv_skb+0x130/0x360 [ 232.746713][ T72] netlink_unicast+0x449/0x710 [ 232.746713][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.746713][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.746713][ T72] ___sys_sendmsg+0xee/0x170 [ 232.746713][ T72] __sys_sendmsg+0xcd/0x170 [ 232.746713][ T72] do_syscall_64+0xc6/0x1e0 [ 232.746713][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.746713][ T72] [ 232.748248][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 232.748248][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.748248][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.748248][ T72] ipv6_find_idev+0x102/0x170 [ 232.748248][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.748248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.748248][ T72] netlink_rcv_skb+0x130/0x360 [ 232.748248][ T72] netlink_unicast+0x449/0x710 [ 232.748248][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.748248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.748248][ T72] ___sys_sendmsg+0xee/0x170 [ 232.748248][ T72] __sys_sendmsg+0xcd/0x170 [ 232.748248][ T72] do_syscall_64+0xc6/0x1e0 [ 232.748248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.748248][ T72] [ 232.749995][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 232.750260][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 232.750260][ T72] netdev_get_by_index+0x5e/0x80 [ 232.750260][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.750260][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.750260][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.750260][ T72] ipv6_add_addr+0x411/0x2000 [ 232.750260][ T72] inet6_addr_add+0x30e/0xa40 [ 232.750260][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.750260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.750260][ T72] netlink_rcv_skb+0x130/0x360 [ 232.750260][ T72] netlink_unicast+0x449/0x710 [ 232.750260][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.750260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.750260][ T72] ___sys_sendmsg+0xee/0x170 [ 232.750260][ T72] __sys_sendmsg+0xcd/0x170 [ 232.750260][ T72] do_syscall_64+0xc6/0x1e0 [ 232.750260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.750260][ T72] [ 232.752256][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 232.752256][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.752256][ T72] ipv6_find_idev+0x102/0x170 [ 232.752256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.752256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.752256][ T72] netlink_rcv_skb+0x130/0x360 [ 232.752256][ T72] netlink_unicast+0x449/0x710 [ 232.752256][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.752256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.752256][ T72] ___sys_sendmsg+0xee/0x170 [ 232.752256][ T72] __sys_sendmsg+0xcd/0x170 [ 232.752256][ T72] do_syscall_64+0xc6/0x1e0 [ 232.752256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.752256][ T72] [ 232.753847][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 232.753847][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.753847][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.753847][ T72] ipv6_find_idev+0x102/0x170 [ 232.753847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.753847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.753847][ T72] netlink_rcv_skb+0x130/0x360 [ 232.753847][ T72] netlink_unicast+0x449/0x710 [ 232.753847][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.753847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.753847][ T72] ___sys_sendmsg+0xee/0x170 [ 232.753847][ T72] __sys_sendmsg+0xcd/0x170 [ 232.753847][ T72] do_syscall_64+0xc6/0x1e0 [ 232.753847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.753847][ T72] [ 232.755825][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 232.756087][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 232.756087][ T72] netdev_get_by_index+0x5e/0x80 [ 232.756087][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.756087][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.756087][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.756087][ T72] ipv6_add_addr+0x411/0x2000 [ 232.756087][ T72] inet6_addr_add+0x30e/0xa40 [ 232.756087][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.756087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.756087][ T72] netlink_rcv_skb+0x130/0x360 [ 232.756087][ T72] netlink_unicast+0x449/0x710 [ 232.756087][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.756087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.756087][ T72] ___sys_sendmsg+0xee/0x170 [ 232.756087][ T72] __sys_sendmsg+0xcd/0x170 [ 232.756087][ T72] do_syscall_64+0xc6/0x1e0 [ 232.756087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.756087][ T72] [ 232.758365][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 232.758365][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.758365][ T72] ipv6_find_idev+0x102/0x170 [ 232.758365][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.758365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.758365][ T72] netlink_rcv_skb+0x130/0x360 [ 232.758365][ T72] netlink_unicast+0x449/0x710 [ 232.758365][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.758365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.758365][ T72] ___sys_sendmsg+0xee/0x170 [ 232.758365][ T72] __sys_sendmsg+0xcd/0x170 [ 232.758365][ T72] do_syscall_64+0xc6/0x1e0 [ 232.758365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.758365][ T72] [ 232.760094][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 232.760094][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.760094][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.760094][ T72] ipv6_find_idev+0x102/0x170 [ 232.760094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.760094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.760094][ T72] netlink_rcv_skb+0x130/0x360 [ 232.760094][ T72] netlink_unicast+0x449/0x710 [ 232.760094][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.760094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.760094][ T72] ___sys_sendmsg+0xee/0x170 [ 232.760094][ T72] __sys_sendmsg+0xcd/0x170 [ 232.760094][ T72] do_syscall_64+0xc6/0x1e0 [ 232.760094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.760094][ T72] [ 232.762048][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 232.762328][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 232.762328][ T72] netdev_get_by_index+0x5e/0x80 [ 232.762328][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.762328][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.762328][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.762328][ T72] ipv6_add_addr+0x411/0x2000 [ 232.762328][ T72] inet6_addr_add+0x30e/0xa40 [ 232.762328][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.762328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.762328][ T72] netlink_rcv_skb+0x130/0x360 [ 232.762328][ T72] netlink_unicast+0x449/0x710 [ 232.762328][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.762328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.762328][ T72] ___sys_sendmsg+0xee/0x170 [ 232.762328][ T72] __sys_sendmsg+0xcd/0x170 [ 232.762328][ T72] do_syscall_64+0xc6/0x1e0 [ 232.762328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.762328][ T72] [ 232.764523][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 232.764523][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.764523][ T72] ipv6_find_idev+0x102/0x170 [ 232.764523][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.764523][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.764523][ T72] netlink_rcv_skb+0x130/0x360 [ 232.764523][ T72] netlink_unicast+0x449/0x710 [ 232.764523][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.764523][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.764523][ T72] ___sys_sendmsg+0xee/0x170 [ 232.764523][ T72] __sys_sendmsg+0xcd/0x170 [ 232.764523][ T72] do_syscall_64+0xc6/0x1e0 [ 232.764523][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.764523][ T72] [ 232.766315][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 232.766315][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.766315][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.766315][ T72] ipv6_find_idev+0x102/0x170 [ 232.766315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.766315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.766315][ T72] netlink_rcv_skb+0x130/0x360 [ 232.766315][ T72] netlink_unicast+0x449/0x710 [ 232.766315][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.766315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.766315][ T72] ___sys_sendmsg+0xee/0x170 [ 232.766315][ T72] __sys_sendmsg+0xcd/0x170 [ 232.766315][ T72] do_syscall_64+0xc6/0x1e0 [ 232.766315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.766315][ T72] [ 232.768231][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 232.768504][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 232.768504][ T72] netdev_get_by_index+0x5e/0x80 [ 232.768504][ T72] fib6_nh_init+0x3d8/0x15b0 [ 232.768504][ T72] ip6_route_info_create+0xf18/0x17d0 [ 232.768504][ T72] addrconf_f6i_alloc+0x244/0x410 [ 232.768504][ T72] ipv6_add_addr+0x411/0x2000 [ 232.768504][ T72] inet6_addr_add+0x30e/0xa40 [ 232.768504][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 232.768504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.768504][ T72] netlink_rcv_skb+0x130/0x360 [ 232.768504][ T72] netlink_unicast+0x449/0x710 [ 232.768504][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.768504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.768504][ T72] ___sys_sendmsg+0xee/0x170 [ 232.768504][ T72] __sys_sendmsg+0xcd/0x170 [ 232.768504][ T72] do_syscall_64+0xc6/0x1e0 [ 232.768504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.768504][ T72] [ 232.770769][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 232.770769][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 232.770769][ T72] ipv6_find_idev+0x102/0x170 [ 232.770769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.770769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.770769][ T72] netlink_rcv_skb+0x130/0x360 [ 232.770769][ T72] netlink_unicast+0x449/0x710 [ 232.770769][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.770769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.770769][ T72] ___sys_sendmsg+0xee/0x170 [ 232.770769][ T72] __sys_sendmsg+0xcd/0x170 [ 232.770769][ T72] do_syscall_64+0xc6/0x1e0 [ 232.770769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.770769][ T72] [ 232.772429][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 232.772429][ T72] neigh_parms_alloc+0x1e5/0x510 [ 232.772429][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 232.772429][ T72] ipv6_find_idev+0x102/0x170 [ 232.772429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 232.772429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 232.772429][ T72] netlink_rcv_skb+0x130/0x360 [ 232.772429][ T72] netlink_unicast+0x449/0x710 [ 232.772429][ T72] netlink_sendmsg+0x723/0xbe0 [ 232.772429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 232.772429][ T72] ___sys_sendmsg+0xee/0x170 [ 232.772429][ T72] __sys_sendmsg+0xcd/0x170 [ 232.772429][ T72] do_syscall_64+0xc6/0x1e0 [ 232.772429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 232.772429][ T72] [ 243.014840][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 243.015286][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 243.015286][ T72] netdev_get_by_index+0x5e/0x80 [ 243.015286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.015286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.015286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.015286][ T72] ipv6_add_addr+0x411/0x2000 [ 243.015286][ T72] inet6_addr_add+0x30e/0xa40 [ 243.015286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.015286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.015286][ T72] netlink_rcv_skb+0x130/0x360 [ 243.015286][ T72] netlink_unicast+0x449/0x710 [ 243.015286][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.015286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.015286][ T72] ___sys_sendmsg+0xee/0x170 [ 243.015286][ T72] __sys_sendmsg+0xcd/0x170 [ 243.015286][ T72] do_syscall_64+0xc6/0x1e0 [ 243.015286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.015286][ T72] [ 243.017662][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 243.017662][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.017662][ T72] ipv6_find_idev+0x102/0x170 [ 243.017662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.017662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.017662][ T72] netlink_rcv_skb+0x130/0x360 [ 243.017662][ T72] netlink_unicast+0x449/0x710 [ 243.017662][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.017662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.017662][ T72] ___sys_sendmsg+0xee/0x170 [ 243.017662][ T72] __sys_sendmsg+0xcd/0x170 [ 243.017662][ T72] do_syscall_64+0xc6/0x1e0 [ 243.017662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.017662][ T72] [ 243.019225][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 243.019225][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.019225][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.019225][ T72] ipv6_find_idev+0x102/0x170 [ 243.019225][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.019225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.019225][ T72] netlink_rcv_skb+0x130/0x360 [ 243.019225][ T72] netlink_unicast+0x449/0x710 [ 243.019225][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.019225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.019225][ T72] ___sys_sendmsg+0xee/0x170 [ 243.019225][ T72] __sys_sendmsg+0xcd/0x170 [ 243.019225][ T72] do_syscall_64+0xc6/0x1e0 [ 243.019225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.019225][ T72] [ 243.020938][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 243.021208][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 243.021208][ T72] netdev_get_by_index+0x5e/0x80 [ 243.021208][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.021208][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.021208][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.021208][ T72] ipv6_add_addr+0x411/0x2000 [ 243.021208][ T72] inet6_addr_add+0x30e/0xa40 [ 243.021208][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.021208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.021208][ T72] netlink_rcv_skb+0x130/0x360 [ 243.021208][ T72] netlink_unicast+0x449/0x710 [ 243.021208][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.021208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.021208][ T72] ___sys_sendmsg+0xee/0x170 [ 243.021208][ T72] __sys_sendmsg+0xcd/0x170 [ 243.021208][ T72] do_syscall_64+0xc6/0x1e0 [ 243.021208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.021208][ T72] [ 243.023187][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 243.023187][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.023187][ T72] ipv6_find_idev+0x102/0x170 [ 243.023187][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.023187][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.023187][ T72] netlink_rcv_skb+0x130/0x360 [ 243.023187][ T72] netlink_unicast+0x449/0x710 [ 243.023187][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.023187][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.023187][ T72] ___sys_sendmsg+0xee/0x170 [ 243.023187][ T72] __sys_sendmsg+0xcd/0x170 [ 243.023187][ T72] do_syscall_64+0xc6/0x1e0 [ 243.023187][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.023187][ T72] [ 243.024741][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 243.024741][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.024741][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.024741][ T72] ipv6_find_idev+0x102/0x170 [ 243.024741][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.024741][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.024741][ T72] netlink_rcv_skb+0x130/0x360 [ 243.024741][ T72] netlink_unicast+0x449/0x710 [ 243.024741][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.024741][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.024741][ T72] ___sys_sendmsg+0xee/0x170 [ 243.024741][ T72] __sys_sendmsg+0xcd/0x170 [ 243.024741][ T72] do_syscall_64+0xc6/0x1e0 [ 243.024741][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.024741][ T72] [ 243.026441][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 243.026710][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 243.026710][ T72] netdev_get_by_index+0x5e/0x80 [ 243.026710][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.026710][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.026710][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.026710][ T72] ipv6_add_addr+0x411/0x2000 [ 243.026710][ T72] inet6_addr_add+0x30e/0xa40 [ 243.026710][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.026710][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.026710][ T72] netlink_rcv_skb+0x130/0x360 [ 243.026710][ T72] netlink_unicast+0x449/0x710 [ 243.026710][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.026710][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.026710][ T72] ___sys_sendmsg+0xee/0x170 [ 243.026710][ T72] __sys_sendmsg+0xcd/0x170 [ 243.026710][ T72] do_syscall_64+0xc6/0x1e0 [ 243.026710][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.026710][ T72] [ 243.028741][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 243.028741][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.028741][ T72] ipv6_find_idev+0x102/0x170 [ 243.028741][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.028741][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.028741][ T72] netlink_rcv_skb+0x130/0x360 [ 243.028741][ T72] netlink_unicast+0x449/0x710 [ 243.028741][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.028741][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.028741][ T72] ___sys_sendmsg+0xee/0x170 [ 243.028741][ T72] __sys_sendmsg+0xcd/0x170 [ 243.028741][ T72] do_syscall_64+0xc6/0x1e0 [ 243.028741][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.028741][ T72] [ 243.030331][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 243.030331][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.030331][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.030331][ T72] ipv6_find_idev+0x102/0x170 [ 243.030331][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.030331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.030331][ T72] netlink_rcv_skb+0x130/0x360 [ 243.030331][ T72] netlink_unicast+0x449/0x710 [ 243.030331][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.030331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.030331][ T72] ___sys_sendmsg+0xee/0x170 [ 243.030331][ T72] __sys_sendmsg+0xcd/0x170 [ 243.030331][ T72] do_syscall_64+0xc6/0x1e0 [ 243.030331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.030331][ T72] [ 243.032020][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 243.032300][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 243.032300][ T72] netdev_get_by_index+0x5e/0x80 [ 243.032300][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.032300][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.032300][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.032300][ T72] ipv6_add_addr+0x411/0x2000 [ 243.032300][ T72] inet6_addr_add+0x30e/0xa40 [ 243.032300][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.032300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.032300][ T72] netlink_rcv_skb+0x130/0x360 [ 243.032300][ T72] netlink_unicast+0x449/0x710 [ 243.032300][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.032300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.032300][ T72] ___sys_sendmsg+0xee/0x170 [ 243.032300][ T72] __sys_sendmsg+0xcd/0x170 [ 243.032300][ T72] do_syscall_64+0xc6/0x1e0 [ 243.032300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.032300][ T72] [ 243.034288][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 243.034288][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.034288][ T72] ipv6_find_idev+0x102/0x170 [ 243.034288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.034288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.034288][ T72] netlink_rcv_skb+0x130/0x360 [ 243.034288][ T72] netlink_unicast+0x449/0x710 [ 243.034288][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.034288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.034288][ T72] ___sys_sendmsg+0xee/0x170 [ 243.034288][ T72] __sys_sendmsg+0xcd/0x170 [ 243.034288][ T72] do_syscall_64+0xc6/0x1e0 [ 243.034288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.034288][ T72] [ 243.035917][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 243.035917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.035917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.035917][ T72] ipv6_find_idev+0x102/0x170 [ 243.035917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.035917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.035917][ T72] netlink_rcv_skb+0x130/0x360 [ 243.035917][ T72] netlink_unicast+0x449/0x710 [ 243.035917][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.035917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.035917][ T72] ___sys_sendmsg+0xee/0x170 [ 243.035917][ T72] __sys_sendmsg+0xcd/0x170 [ 243.035917][ T72] do_syscall_64+0xc6/0x1e0 [ 243.035917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.035917][ T72] [ 243.038059][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 243.038338][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 243.038338][ T72] netdev_get_by_index+0x5e/0x80 [ 243.038338][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.038338][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.038338][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.038338][ T72] ipv6_add_addr+0x411/0x2000 [ 243.038338][ T72] inet6_addr_add+0x30e/0xa40 [ 243.038338][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.038338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.038338][ T72] netlink_rcv_skb+0x130/0x360 [ 243.038338][ T72] netlink_unicast+0x449/0x710 [ 243.038338][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.038338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.038338][ T72] ___sys_sendmsg+0xee/0x170 [ 243.038338][ T72] __sys_sendmsg+0xcd/0x170 [ 243.038338][ T72] do_syscall_64+0xc6/0x1e0 [ 243.038338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.038338][ T72] [ 243.040339][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 243.040339][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.040339][ T72] ipv6_find_idev+0x102/0x170 [ 243.040339][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.040339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.040339][ T72] netlink_rcv_skb+0x130/0x360 [ 243.040339][ T72] netlink_unicast+0x449/0x710 [ 243.040339][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.040339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.040339][ T72] ___sys_sendmsg+0xee/0x170 [ 243.040339][ T72] __sys_sendmsg+0xcd/0x170 [ 243.040339][ T72] do_syscall_64+0xc6/0x1e0 [ 243.040339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.040339][ T72] [ 243.041870][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 243.041870][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.041870][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.041870][ T72] ipv6_find_idev+0x102/0x170 [ 243.041870][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.041870][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.041870][ T72] netlink_rcv_skb+0x130/0x360 [ 243.041870][ T72] netlink_unicast+0x449/0x710 [ 243.041870][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.041870][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.041870][ T72] ___sys_sendmsg+0xee/0x170 [ 243.041870][ T72] __sys_sendmsg+0xcd/0x170 [ 243.041870][ T72] do_syscall_64+0xc6/0x1e0 [ 243.041870][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.041870][ T72] [ 243.043653][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 243.043990][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 243.043990][ T72] netdev_get_by_index+0x5e/0x80 [ 243.043990][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.043990][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.043990][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.043990][ T72] ipv6_add_addr+0x411/0x2000 [ 243.043990][ T72] inet6_addr_add+0x30e/0xa40 [ 243.043990][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.043990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.043990][ T72] netlink_rcv_skb+0x130/0x360 [ 243.043990][ T72] netlink_unicast+0x449/0x710 [ 243.043990][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.043990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.043990][ T72] ___sys_sendmsg+0xee/0x170 [ 243.043990][ T72] __sys_sendmsg+0xcd/0x170 [ 243.043990][ T72] do_syscall_64+0xc6/0x1e0 [ 243.043990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.043990][ T72] [ 243.046010][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 243.046010][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.046010][ T72] ipv6_find_idev+0x102/0x170 [ 243.046010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.046010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.046010][ T72] netlink_rcv_skb+0x130/0x360 [ 243.046010][ T72] netlink_unicast+0x449/0x710 [ 243.046010][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.046010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.046010][ T72] ___sys_sendmsg+0xee/0x170 [ 243.046010][ T72] __sys_sendmsg+0xcd/0x170 [ 243.046010][ T72] do_syscall_64+0xc6/0x1e0 [ 243.046010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.046010][ T72] [ 243.047822][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 243.047822][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.047822][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.047822][ T72] ipv6_find_idev+0x102/0x170 [ 243.047822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.047822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.047822][ T72] netlink_rcv_skb+0x130/0x360 [ 243.047822][ T72] netlink_unicast+0x449/0x710 [ 243.047822][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.047822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.047822][ T72] ___sys_sendmsg+0xee/0x170 [ 243.047822][ T72] __sys_sendmsg+0xcd/0x170 [ 243.047822][ T72] do_syscall_64+0xc6/0x1e0 [ 243.047822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.047822][ T72] [ 243.049880][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 243.050154][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 243.050154][ T72] netdev_get_by_index+0x5e/0x80 [ 243.050154][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.050154][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.050154][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.050154][ T72] ipv6_add_addr+0x411/0x2000 [ 243.050154][ T72] inet6_addr_add+0x30e/0xa40 [ 243.050154][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.050154][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.050154][ T72] netlink_rcv_skb+0x130/0x360 [ 243.050154][ T72] netlink_unicast+0x449/0x710 [ 243.050154][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.050154][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.050154][ T72] ___sys_sendmsg+0xee/0x170 [ 243.050154][ T72] __sys_sendmsg+0xcd/0x170 [ 243.050154][ T72] do_syscall_64+0xc6/0x1e0 [ 243.050154][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.050154][ T72] [ 243.052280][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 243.052280][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.052280][ T72] ipv6_find_idev+0x102/0x170 [ 243.052280][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.052280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.052280][ T72] netlink_rcv_skb+0x130/0x360 [ 243.052280][ T72] netlink_unicast+0x449/0x710 [ 243.052280][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.052280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.052280][ T72] ___sys_sendmsg+0xee/0x170 [ 243.052280][ T72] __sys_sendmsg+0xcd/0x170 [ 243.052280][ T72] do_syscall_64+0xc6/0x1e0 [ 243.052280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.052280][ T72] [ 243.053997][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 243.053997][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.053997][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.053997][ T72] ipv6_find_idev+0x102/0x170 [ 243.053997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.053997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.053997][ T72] netlink_rcv_skb+0x130/0x360 [ 243.053997][ T72] netlink_unicast+0x449/0x710 [ 243.053997][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.053997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.053997][ T72] ___sys_sendmsg+0xee/0x170 [ 243.053997][ T72] __sys_sendmsg+0xcd/0x170 [ 243.053997][ T72] do_syscall_64+0xc6/0x1e0 [ 243.053997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.053997][ T72] [ 243.055895][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 243.056167][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 243.056167][ T72] netdev_get_by_index+0x5e/0x80 [ 243.056167][ T72] fib6_nh_init+0x3d8/0x15b0 [ 243.056167][ T72] ip6_route_info_create+0xf18/0x17d0 [ 243.056167][ T72] addrconf_f6i_alloc+0x244/0x410 [ 243.056167][ T72] ipv6_add_addr+0x411/0x2000 [ 243.056167][ T72] inet6_addr_add+0x30e/0xa40 [ 243.056167][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 243.056167][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.056167][ T72] netlink_rcv_skb+0x130/0x360 [ 243.056167][ T72] netlink_unicast+0x449/0x710 [ 243.056167][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.056167][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.056167][ T72] ___sys_sendmsg+0xee/0x170 [ 243.056167][ T72] __sys_sendmsg+0xcd/0x170 [ 243.056167][ T72] do_syscall_64+0xc6/0x1e0 [ 243.056167][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.056167][ T72] [ 243.058442][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 243.058442][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 243.058442][ T72] ipv6_find_idev+0x102/0x170 [ 243.058442][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.058442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.058442][ T72] netlink_rcv_skb+0x130/0x360 [ 243.058442][ T72] netlink_unicast+0x449/0x710 [ 243.058442][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.058442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.058442][ T72] ___sys_sendmsg+0xee/0x170 [ 243.058442][ T72] __sys_sendmsg+0xcd/0x170 [ 243.058442][ T72] do_syscall_64+0xc6/0x1e0 [ 243.058442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.058442][ T72] [ 243.060168][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 243.060168][ T72] neigh_parms_alloc+0x1e5/0x510 [ 243.060168][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 243.060168][ T72] ipv6_find_idev+0x102/0x170 [ 243.060168][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 243.060168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 243.060168][ T72] netlink_rcv_skb+0x130/0x360 [ 243.060168][ T72] netlink_unicast+0x449/0x710 [ 243.060168][ T72] netlink_sendmsg+0x723/0xbe0 [ 243.060168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 243.060168][ T72] ___sys_sendmsg+0xee/0x170 [ 243.060168][ T72] __sys_sendmsg+0xcd/0x170 [ 243.060168][ T72] do_syscall_64+0xc6/0x1e0 [ 243.060168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 243.060168][ T72] [ 253.310846][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 253.311260][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 253.311260][ T72] netdev_get_by_index+0x5e/0x80 [ 253.311260][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.311260][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.311260][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.311260][ T72] ipv6_add_addr+0x411/0x2000 [ 253.311260][ T72] inet6_addr_add+0x30e/0xa40 [ 253.311260][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.311260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.311260][ T72] netlink_rcv_skb+0x130/0x360 [ 253.311260][ T72] netlink_unicast+0x449/0x710 [ 253.311260][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.311260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.311260][ T72] ___sys_sendmsg+0xee/0x170 [ 253.311260][ T72] __sys_sendmsg+0xcd/0x170 [ 253.311260][ T72] do_syscall_64+0xc6/0x1e0 [ 253.311260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.311260][ T72] [ 253.313269][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 253.313269][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.313269][ T72] ipv6_find_idev+0x102/0x170 [ 253.313269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.313269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.313269][ T72] netlink_rcv_skb+0x130/0x360 [ 253.313269][ T72] netlink_unicast+0x449/0x710 [ 253.313269][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.313269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.313269][ T72] ___sys_sendmsg+0xee/0x170 [ 253.313269][ T72] __sys_sendmsg+0xcd/0x170 [ 253.313269][ T72] do_syscall_64+0xc6/0x1e0 [ 253.313269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.313269][ T72] [ 253.314811][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 253.314811][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.314811][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.314811][ T72] ipv6_find_idev+0x102/0x170 [ 253.314811][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.314811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.314811][ T72] netlink_rcv_skb+0x130/0x360 [ 253.314811][ T72] netlink_unicast+0x449/0x710 [ 253.314811][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.314811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.314811][ T72] ___sys_sendmsg+0xee/0x170 [ 253.314811][ T72] __sys_sendmsg+0xcd/0x170 [ 253.314811][ T72] do_syscall_64+0xc6/0x1e0 [ 253.314811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.314811][ T72] [ 253.316517][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 253.316805][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 253.316805][ T72] netdev_get_by_index+0x5e/0x80 [ 253.316805][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.316805][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.316805][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.316805][ T72] ipv6_add_addr+0x411/0x2000 [ 253.316805][ T72] inet6_addr_add+0x30e/0xa40 [ 253.316805][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.316805][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.316805][ T72] netlink_rcv_skb+0x130/0x360 [ 253.316805][ T72] netlink_unicast+0x449/0x710 [ 253.316805][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.316805][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.316805][ T72] ___sys_sendmsg+0xee/0x170 [ 253.316805][ T72] __sys_sendmsg+0xcd/0x170 [ 253.316805][ T72] do_syscall_64+0xc6/0x1e0 [ 253.316805][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.316805][ T72] [ 253.318846][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 253.318846][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.318846][ T72] ipv6_find_idev+0x102/0x170 [ 253.318846][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.318846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.318846][ T72] netlink_rcv_skb+0x130/0x360 [ 253.318846][ T72] netlink_unicast+0x449/0x710 [ 253.318846][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.318846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.318846][ T72] ___sys_sendmsg+0xee/0x170 [ 253.318846][ T72] __sys_sendmsg+0xcd/0x170 [ 253.318846][ T72] do_syscall_64+0xc6/0x1e0 [ 253.318846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.318846][ T72] [ 253.320467][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 253.320467][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.320467][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.320467][ T72] ipv6_find_idev+0x102/0x170 [ 253.320467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.320467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.320467][ T72] netlink_rcv_skb+0x130/0x360 [ 253.320467][ T72] netlink_unicast+0x449/0x710 [ 253.320467][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.320467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.320467][ T72] ___sys_sendmsg+0xee/0x170 [ 253.320467][ T72] __sys_sendmsg+0xcd/0x170 [ 253.320467][ T72] do_syscall_64+0xc6/0x1e0 [ 253.320467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.320467][ T72] [ 253.322164][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 253.322436][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 253.322436][ T72] netdev_get_by_index+0x5e/0x80 [ 253.322436][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.322436][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.322436][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.322436][ T72] ipv6_add_addr+0x411/0x2000 [ 253.322436][ T72] inet6_addr_add+0x30e/0xa40 [ 253.322436][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.322436][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.322436][ T72] netlink_rcv_skb+0x130/0x360 [ 253.322436][ T72] netlink_unicast+0x449/0x710 [ 253.322436][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.322436][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.322436][ T72] ___sys_sendmsg+0xee/0x170 [ 253.322436][ T72] __sys_sendmsg+0xcd/0x170 [ 253.322436][ T72] do_syscall_64+0xc6/0x1e0 [ 253.322436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.322436][ T72] [ 253.324421][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 253.324421][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.324421][ T72] ipv6_find_idev+0x102/0x170 [ 253.324421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.324421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.324421][ T72] netlink_rcv_skb+0x130/0x360 [ 253.324421][ T72] netlink_unicast+0x449/0x710 [ 253.324421][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.324421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.324421][ T72] ___sys_sendmsg+0xee/0x170 [ 253.324421][ T72] __sys_sendmsg+0xcd/0x170 [ 253.324421][ T72] do_syscall_64+0xc6/0x1e0 [ 253.324421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.324421][ T72] [ 253.325954][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 253.325954][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.325954][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.325954][ T72] ipv6_find_idev+0x102/0x170 [ 253.325954][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.325954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.325954][ T72] netlink_rcv_skb+0x130/0x360 [ 253.325954][ T72] netlink_unicast+0x449/0x710 [ 253.325954][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.325954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.325954][ T72] ___sys_sendmsg+0xee/0x170 [ 253.325954][ T72] __sys_sendmsg+0xcd/0x170 [ 253.325954][ T72] do_syscall_64+0xc6/0x1e0 [ 253.325954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.325954][ T72] [ 253.327659][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 253.328382][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 253.328382][ T72] netdev_get_by_index+0x5e/0x80 [ 253.328382][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.328382][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.328382][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.328382][ T72] ipv6_add_addr+0x411/0x2000 [ 253.328382][ T72] inet6_addr_add+0x30e/0xa40 [ 253.328382][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.328382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.328382][ T72] netlink_rcv_skb+0x130/0x360 [ 253.328382][ T72] netlink_unicast+0x449/0x710 [ 253.328382][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.328382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.328382][ T72] ___sys_sendmsg+0xee/0x170 [ 253.328382][ T72] __sys_sendmsg+0xcd/0x170 [ 253.328382][ T72] do_syscall_64+0xc6/0x1e0 [ 253.328382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.328382][ T72] [ 253.330516][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 253.330516][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.330516][ T72] ipv6_find_idev+0x102/0x170 [ 253.330516][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.330516][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.330516][ T72] netlink_rcv_skb+0x130/0x360 [ 253.330516][ T72] netlink_unicast+0x449/0x710 [ 253.330516][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.330516][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.330516][ T72] ___sys_sendmsg+0xee/0x170 [ 253.330516][ T72] __sys_sendmsg+0xcd/0x170 [ 253.330516][ T72] do_syscall_64+0xc6/0x1e0 [ 253.330516][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.330516][ T72] [ 253.332044][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 253.332044][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.332044][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.332044][ T72] ipv6_find_idev+0x102/0x170 [ 253.332044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.332044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.332044][ T72] netlink_rcv_skb+0x130/0x360 [ 253.332044][ T72] netlink_unicast+0x449/0x710 [ 253.332044][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.332044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.332044][ T72] ___sys_sendmsg+0xee/0x170 [ 253.332044][ T72] __sys_sendmsg+0xcd/0x170 [ 253.332044][ T72] do_syscall_64+0xc6/0x1e0 [ 253.332044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.332044][ T72] [ 253.333773][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 253.334037][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 253.334037][ T72] netdev_get_by_index+0x5e/0x80 [ 253.334037][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.334037][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.334037][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.334037][ T72] ipv6_add_addr+0x411/0x2000 [ 253.334037][ T72] inet6_addr_add+0x30e/0xa40 [ 253.334037][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.334037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.334037][ T72] netlink_rcv_skb+0x130/0x360 [ 253.334037][ T72] netlink_unicast+0x449/0x710 [ 253.334037][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.334037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.334037][ T72] ___sys_sendmsg+0xee/0x170 [ 253.334037][ T72] __sys_sendmsg+0xcd/0x170 [ 253.334037][ T72] do_syscall_64+0xc6/0x1e0 [ 253.334037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.334037][ T72] [ 253.336022][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 253.336022][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.336022][ T72] ipv6_find_idev+0x102/0x170 [ 253.336022][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.336022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.336022][ T72] netlink_rcv_skb+0x130/0x360 [ 253.336022][ T72] netlink_unicast+0x449/0x710 [ 253.336022][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.336022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.336022][ T72] ___sys_sendmsg+0xee/0x170 [ 253.336022][ T72] __sys_sendmsg+0xcd/0x170 [ 253.336022][ T72] do_syscall_64+0xc6/0x1e0 [ 253.336022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.336022][ T72] [ 253.337565][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 253.337565][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.337565][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.337565][ T72] ipv6_find_idev+0x102/0x170 [ 253.337565][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.337565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.337565][ T72] netlink_rcv_skb+0x130/0x360 [ 253.337565][ T72] netlink_unicast+0x449/0x710 [ 253.337565][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.337565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.337565][ T72] ___sys_sendmsg+0xee/0x170 [ 253.337565][ T72] __sys_sendmsg+0xcd/0x170 [ 253.337565][ T72] do_syscall_64+0xc6/0x1e0 [ 253.337565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.337565][ T72] [ 253.339305][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 253.339569][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 253.339569][ T72] netdev_get_by_index+0x5e/0x80 [ 253.339569][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.339569][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.339569][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.339569][ T72] ipv6_add_addr+0x411/0x2000 [ 253.339569][ T72] inet6_addr_add+0x30e/0xa40 [ 253.339569][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.339569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.339569][ T72] netlink_rcv_skb+0x130/0x360 [ 253.339569][ T72] netlink_unicast+0x449/0x710 [ 253.339569][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.339569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.339569][ T72] ___sys_sendmsg+0xee/0x170 [ 253.339569][ T72] __sys_sendmsg+0xcd/0x170 [ 253.339569][ T72] do_syscall_64+0xc6/0x1e0 [ 253.339569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.339569][ T72] [ 253.341648][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 253.341648][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.341648][ T72] ipv6_find_idev+0x102/0x170 [ 253.341648][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.341648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.341648][ T72] netlink_rcv_skb+0x130/0x360 [ 253.341648][ T72] netlink_unicast+0x449/0x710 [ 253.341648][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.341648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.341648][ T72] ___sys_sendmsg+0xee/0x170 [ 253.341648][ T72] __sys_sendmsg+0xcd/0x170 [ 253.341648][ T72] do_syscall_64+0xc6/0x1e0 [ 253.341648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.341648][ T72] [ 253.343355][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 253.343355][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.343355][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.343355][ T72] ipv6_find_idev+0x102/0x170 [ 253.343355][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.343355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.343355][ T72] netlink_rcv_skb+0x130/0x360 [ 253.343355][ T72] netlink_unicast+0x449/0x710 [ 253.343355][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.343355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.343355][ T72] ___sys_sendmsg+0xee/0x170 [ 253.343355][ T72] __sys_sendmsg+0xcd/0x170 [ 253.343355][ T72] do_syscall_64+0xc6/0x1e0 [ 253.343355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.343355][ T72] [ 253.345376][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 253.345637][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 253.345637][ T72] netdev_get_by_index+0x5e/0x80 [ 253.345637][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.345637][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.345637][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.345637][ T72] ipv6_add_addr+0x411/0x2000 [ 253.345637][ T72] inet6_addr_add+0x30e/0xa40 [ 253.345637][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.345637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.345637][ T72] netlink_rcv_skb+0x130/0x360 [ 253.345637][ T72] netlink_unicast+0x449/0x710 [ 253.345637][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.345637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.345637][ T72] ___sys_sendmsg+0xee/0x170 [ 253.345637][ T72] __sys_sendmsg+0xcd/0x170 [ 253.345637][ T72] do_syscall_64+0xc6/0x1e0 [ 253.345637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.345637][ T72] [ 253.347795][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 253.347795][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.347795][ T72] ipv6_find_idev+0x102/0x170 [ 253.347795][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.347795][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.347795][ T72] netlink_rcv_skb+0x130/0x360 [ 253.347795][ T72] netlink_unicast+0x449/0x710 [ 253.347795][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.347795][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.347795][ T72] ___sys_sendmsg+0xee/0x170 [ 253.347795][ T72] __sys_sendmsg+0xcd/0x170 [ 253.347795][ T72] do_syscall_64+0xc6/0x1e0 [ 253.347795][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.347795][ T72] [ 253.349497][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 253.349497][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.349497][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.349497][ T72] ipv6_find_idev+0x102/0x170 [ 253.349497][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.349497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.349497][ T72] netlink_rcv_skb+0x130/0x360 [ 253.349497][ T72] netlink_unicast+0x449/0x710 [ 253.349497][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.349497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.349497][ T72] ___sys_sendmsg+0xee/0x170 [ 253.349497][ T72] __sys_sendmsg+0xcd/0x170 [ 253.349497][ T72] do_syscall_64+0xc6/0x1e0 [ 253.349497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.349497][ T72] [ 253.351394][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 253.351654][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 253.351654][ T72] netdev_get_by_index+0x5e/0x80 [ 253.351654][ T72] fib6_nh_init+0x3d8/0x15b0 [ 253.351654][ T72] ip6_route_info_create+0xf18/0x17d0 [ 253.351654][ T72] addrconf_f6i_alloc+0x244/0x410 [ 253.351654][ T72] ipv6_add_addr+0x411/0x2000 [ 253.351654][ T72] inet6_addr_add+0x30e/0xa40 [ 253.351654][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 253.351654][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.351654][ T72] netlink_rcv_skb+0x130/0x360 [ 253.351654][ T72] netlink_unicast+0x449/0x710 [ 253.351654][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.351654][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.351654][ T72] ___sys_sendmsg+0xee/0x170 [ 253.351654][ T72] __sys_sendmsg+0xcd/0x170 [ 253.351654][ T72] do_syscall_64+0xc6/0x1e0 [ 253.351654][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.351654][ T72] [ 253.353960][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 253.353960][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 253.353960][ T72] ipv6_find_idev+0x102/0x170 [ 253.353960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.353960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.353960][ T72] netlink_rcv_skb+0x130/0x360 [ 253.353960][ T72] netlink_unicast+0x449/0x710 [ 253.353960][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.353960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.353960][ T72] ___sys_sendmsg+0xee/0x170 [ 253.353960][ T72] __sys_sendmsg+0xcd/0x170 [ 253.353960][ T72] do_syscall_64+0xc6/0x1e0 [ 253.353960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.353960][ T72] [ 253.355686][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 253.355686][ T72] neigh_parms_alloc+0x1e5/0x510 [ 253.355686][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 253.355686][ T72] ipv6_find_idev+0x102/0x170 [ 253.355686][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 253.355686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 253.355686][ T72] netlink_rcv_skb+0x130/0x360 [ 253.355686][ T72] netlink_unicast+0x449/0x710 [ 253.355686][ T72] netlink_sendmsg+0x723/0xbe0 [ 253.355686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 253.355686][ T72] ___sys_sendmsg+0xee/0x170 [ 253.355686][ T72] __sys_sendmsg+0xcd/0x170 [ 253.355686][ T72] do_syscall_64+0xc6/0x1e0 [ 253.355686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 253.355686][ T72] [ 263.838879][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 263.839290][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 263.839290][ T72] netdev_get_by_index+0x5e/0x80 [ 263.839290][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.839290][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.839290][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.839290][ T72] ipv6_add_addr+0x411/0x2000 [ 263.839290][ T72] inet6_addr_add+0x30e/0xa40 [ 263.839290][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.839290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.839290][ T72] netlink_rcv_skb+0x130/0x360 [ 263.839290][ T72] netlink_unicast+0x449/0x710 [ 263.839290][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.839290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.839290][ T72] ___sys_sendmsg+0xee/0x170 [ 263.839290][ T72] __sys_sendmsg+0xcd/0x170 [ 263.839290][ T72] do_syscall_64+0xc6/0x1e0 [ 263.839290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.839290][ T72] [ 263.841852][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 263.841852][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.841852][ T72] ipv6_find_idev+0x102/0x170 [ 263.841852][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.841852][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.841852][ T72] netlink_rcv_skb+0x130/0x360 [ 263.841852][ T72] netlink_unicast+0x449/0x710 [ 263.841852][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.841852][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.841852][ T72] ___sys_sendmsg+0xee/0x170 [ 263.841852][ T72] __sys_sendmsg+0xcd/0x170 [ 263.841852][ T72] do_syscall_64+0xc6/0x1e0 [ 263.841852][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.841852][ T72] [ 263.844196][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 263.844196][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.844196][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.844196][ T72] ipv6_find_idev+0x102/0x170 [ 263.844196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.844196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.844196][ T72] netlink_rcv_skb+0x130/0x360 [ 263.844196][ T72] netlink_unicast+0x449/0x710 [ 263.844196][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.844196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.844196][ T72] ___sys_sendmsg+0xee/0x170 [ 263.844196][ T72] __sys_sendmsg+0xcd/0x170 [ 263.844196][ T72] do_syscall_64+0xc6/0x1e0 [ 263.844196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.844196][ T72] [ 263.846828][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 263.847255][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 263.847255][ T72] netdev_get_by_index+0x5e/0x80 [ 263.847255][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.847255][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.847255][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.847255][ T72] ipv6_add_addr+0x411/0x2000 [ 263.847255][ T72] inet6_addr_add+0x30e/0xa40 [ 263.847255][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.847255][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.847255][ T72] netlink_rcv_skb+0x130/0x360 [ 263.847255][ T72] netlink_unicast+0x449/0x710 [ 263.847255][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.847255][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.847255][ T72] ___sys_sendmsg+0xee/0x170 [ 263.847255][ T72] __sys_sendmsg+0xcd/0x170 [ 263.847255][ T72] do_syscall_64+0xc6/0x1e0 [ 263.847255][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.847255][ T72] [ 263.850351][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 263.850351][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.850351][ T72] ipv6_find_idev+0x102/0x170 [ 263.850351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.850351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.850351][ T72] netlink_rcv_skb+0x130/0x360 [ 263.850351][ T72] netlink_unicast+0x449/0x710 [ 263.850351][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.850351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.850351][ T72] ___sys_sendmsg+0xee/0x170 [ 263.850351][ T72] __sys_sendmsg+0xcd/0x170 [ 263.850351][ T72] do_syscall_64+0xc6/0x1e0 [ 263.850351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.850351][ T72] [ 263.852766][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 263.852766][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.852766][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.852766][ T72] ipv6_find_idev+0x102/0x170 [ 263.852766][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.852766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.852766][ T72] netlink_rcv_skb+0x130/0x360 [ 263.852766][ T72] netlink_unicast+0x449/0x710 [ 263.852766][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.852766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.852766][ T72] ___sys_sendmsg+0xee/0x170 [ 263.852766][ T72] __sys_sendmsg+0xcd/0x170 [ 263.852766][ T72] do_syscall_64+0xc6/0x1e0 [ 263.852766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.852766][ T72] [ 263.855429][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 263.855860][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 263.855860][ T72] netdev_get_by_index+0x5e/0x80 [ 263.855860][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.855860][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.855860][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.855860][ T72] ipv6_add_addr+0x411/0x2000 [ 263.855860][ T72] inet6_addr_add+0x30e/0xa40 [ 263.855860][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.855860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.855860][ T72] netlink_rcv_skb+0x130/0x360 [ 263.855860][ T72] netlink_unicast+0x449/0x710 [ 263.855860][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.855860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.855860][ T72] ___sys_sendmsg+0xee/0x170 [ 263.855860][ T72] __sys_sendmsg+0xcd/0x170 [ 263.855860][ T72] do_syscall_64+0xc6/0x1e0 [ 263.855860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.855860][ T72] [ 263.858960][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 263.858960][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.858960][ T72] ipv6_find_idev+0x102/0x170 [ 263.858960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.858960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.858960][ T72] netlink_rcv_skb+0x130/0x360 [ 263.858960][ T72] netlink_unicast+0x449/0x710 [ 263.858960][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.858960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.858960][ T72] ___sys_sendmsg+0xee/0x170 [ 263.858960][ T72] __sys_sendmsg+0xcd/0x170 [ 263.858960][ T72] do_syscall_64+0xc6/0x1e0 [ 263.858960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.858960][ T72] [ 263.861358][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 263.861358][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.861358][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.861358][ T72] ipv6_find_idev+0x102/0x170 [ 263.861358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.861358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.861358][ T72] netlink_rcv_skb+0x130/0x360 [ 263.861358][ T72] netlink_unicast+0x449/0x710 [ 263.861358][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.861358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.861358][ T72] ___sys_sendmsg+0xee/0x170 [ 263.861358][ T72] __sys_sendmsg+0xcd/0x170 [ 263.861358][ T72] do_syscall_64+0xc6/0x1e0 [ 263.861358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.861358][ T72] [ 263.863930][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 263.864351][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 263.864351][ T72] netdev_get_by_index+0x5e/0x80 [ 263.864351][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.864351][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.864351][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.864351][ T72] ipv6_add_addr+0x411/0x2000 [ 263.864351][ T72] inet6_addr_add+0x30e/0xa40 [ 263.864351][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.864351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.864351][ T72] netlink_rcv_skb+0x130/0x360 [ 263.864351][ T72] netlink_unicast+0x449/0x710 [ 263.864351][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.864351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.864351][ T72] ___sys_sendmsg+0xee/0x170 [ 263.864351][ T72] __sys_sendmsg+0xcd/0x170 [ 263.864351][ T72] do_syscall_64+0xc6/0x1e0 [ 263.864351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.864351][ T72] [ 263.867337][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 263.867337][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.867337][ T72] ipv6_find_idev+0x102/0x170 [ 263.867337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.867337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.867337][ T72] netlink_rcv_skb+0x130/0x360 [ 263.867337][ T72] netlink_unicast+0x449/0x710 [ 263.867337][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.867337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.867337][ T72] ___sys_sendmsg+0xee/0x170 [ 263.867337][ T72] __sys_sendmsg+0xcd/0x170 [ 263.867337][ T72] do_syscall_64+0xc6/0x1e0 [ 263.867337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.867337][ T72] [ 263.869703][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 263.869703][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.869703][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.869703][ T72] ipv6_find_idev+0x102/0x170 [ 263.869703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.869703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.869703][ T72] netlink_rcv_skb+0x130/0x360 [ 263.869703][ T72] netlink_unicast+0x449/0x710 [ 263.869703][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.869703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.869703][ T72] ___sys_sendmsg+0xee/0x170 [ 263.869703][ T72] __sys_sendmsg+0xcd/0x170 [ 263.869703][ T72] do_syscall_64+0xc6/0x1e0 [ 263.869703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.869703][ T72] [ 263.873133][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 263.873570][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 263.873570][ T72] netdev_get_by_index+0x5e/0x80 [ 263.873570][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.873570][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.873570][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.873570][ T72] ipv6_add_addr+0x411/0x2000 [ 263.873570][ T72] inet6_addr_add+0x30e/0xa40 [ 263.873570][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.873570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.873570][ T72] netlink_rcv_skb+0x130/0x360 [ 263.873570][ T72] netlink_unicast+0x449/0x710 [ 263.873570][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.873570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.873570][ T72] ___sys_sendmsg+0xee/0x170 [ 263.873570][ T72] __sys_sendmsg+0xcd/0x170 [ 263.873570][ T72] do_syscall_64+0xc6/0x1e0 [ 263.873570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.873570][ T72] [ 263.876670][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 263.876670][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.876670][ T72] ipv6_find_idev+0x102/0x170 [ 263.876670][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.876670][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.876670][ T72] netlink_rcv_skb+0x130/0x360 [ 263.876670][ T72] netlink_unicast+0x449/0x710 [ 263.876670][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.876670][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.876670][ T72] ___sys_sendmsg+0xee/0x170 [ 263.876670][ T72] __sys_sendmsg+0xcd/0x170 [ 263.876670][ T72] do_syscall_64+0xc6/0x1e0 [ 263.876670][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.876670][ T72] [ 263.879076][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 263.879076][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.879076][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.879076][ T72] ipv6_find_idev+0x102/0x170 [ 263.879076][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.879076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.879076][ T72] netlink_rcv_skb+0x130/0x360 [ 263.879076][ T72] netlink_unicast+0x449/0x710 [ 263.879076][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.879076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.879076][ T72] ___sys_sendmsg+0xee/0x170 [ 263.879076][ T72] __sys_sendmsg+0xcd/0x170 [ 263.879076][ T72] do_syscall_64+0xc6/0x1e0 [ 263.879076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.879076][ T72] [ 263.881816][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 263.882242][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 263.882242][ T72] netdev_get_by_index+0x5e/0x80 [ 263.882242][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.882242][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.882242][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.882242][ T72] ipv6_add_addr+0x411/0x2000 [ 263.882242][ T72] inet6_addr_add+0x30e/0xa40 [ 263.882242][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.882242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.882242][ T72] netlink_rcv_skb+0x130/0x360 [ 263.882242][ T72] netlink_unicast+0x449/0x710 [ 263.882242][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.882242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.882242][ T72] ___sys_sendmsg+0xee/0x170 [ 263.882242][ T72] __sys_sendmsg+0xcd/0x170 [ 263.882242][ T72] do_syscall_64+0xc6/0x1e0 [ 263.882242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.882242][ T72] [ 263.885553][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 263.885553][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.885553][ T72] ipv6_find_idev+0x102/0x170 [ 263.885553][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.885553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.885553][ T72] netlink_rcv_skb+0x130/0x360 [ 263.885553][ T72] netlink_unicast+0x449/0x710 [ 263.885553][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.885553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.885553][ T72] ___sys_sendmsg+0xee/0x170 [ 263.885553][ T72] __sys_sendmsg+0xcd/0x170 [ 263.885553][ T72] do_syscall_64+0xc6/0x1e0 [ 263.885553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.885553][ T72] [ 263.888302][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 263.888302][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.888302][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.888302][ T72] ipv6_find_idev+0x102/0x170 [ 263.888302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.888302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.888302][ T72] netlink_rcv_skb+0x130/0x360 [ 263.888302][ T72] netlink_unicast+0x449/0x710 [ 263.888302][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.888302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.888302][ T72] ___sys_sendmsg+0xee/0x170 [ 263.888302][ T72] __sys_sendmsg+0xcd/0x170 [ 263.888302][ T72] do_syscall_64+0xc6/0x1e0 [ 263.888302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.888302][ T72] [ 263.891641][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 263.892166][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 263.892166][ T72] netdev_get_by_index+0x5e/0x80 [ 263.892166][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.892166][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.892166][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.892166][ T72] ipv6_add_addr+0x411/0x2000 [ 263.892166][ T72] inet6_addr_add+0x30e/0xa40 [ 263.892166][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.892166][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.892166][ T72] netlink_rcv_skb+0x130/0x360 [ 263.892166][ T72] netlink_unicast+0x449/0x710 [ 263.892166][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.892166][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.892166][ T72] ___sys_sendmsg+0xee/0x170 [ 263.892166][ T72] __sys_sendmsg+0xcd/0x170 [ 263.892166][ T72] do_syscall_64+0xc6/0x1e0 [ 263.892166][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.892166][ T72] [ 263.895700][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 263.895700][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.895700][ T72] ipv6_find_idev+0x102/0x170 [ 263.895700][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.895700][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.895700][ T72] netlink_rcv_skb+0x130/0x360 [ 263.895700][ T72] netlink_unicast+0x449/0x710 [ 263.895700][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.895700][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.895700][ T72] ___sys_sendmsg+0xee/0x170 [ 263.895700][ T72] __sys_sendmsg+0xcd/0x170 [ 263.895700][ T72] do_syscall_64+0xc6/0x1e0 [ 263.895700][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.895700][ T72] [ 263.898567][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 263.898567][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.898567][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.898567][ T72] ipv6_find_idev+0x102/0x170 [ 263.898567][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.898567][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.898567][ T72] netlink_rcv_skb+0x130/0x360 [ 263.898567][ T72] netlink_unicast+0x449/0x710 [ 263.898567][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.898567][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.898567][ T72] ___sys_sendmsg+0xee/0x170 [ 263.898567][ T72] __sys_sendmsg+0xcd/0x170 [ 263.898567][ T72] do_syscall_64+0xc6/0x1e0 [ 263.898567][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.898567][ T72] [ 263.901687][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 263.902196][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 263.902196][ T72] netdev_get_by_index+0x5e/0x80 [ 263.902196][ T72] fib6_nh_init+0x3d8/0x15b0 [ 263.902196][ T72] ip6_route_info_create+0xf18/0x17d0 [ 263.902196][ T72] addrconf_f6i_alloc+0x244/0x410 [ 263.902196][ T72] ipv6_add_addr+0x411/0x2000 [ 263.902196][ T72] inet6_addr_add+0x30e/0xa40 [ 263.902196][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 263.902196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.902196][ T72] netlink_rcv_skb+0x130/0x360 [ 263.902196][ T72] netlink_unicast+0x449/0x710 [ 263.902196][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.902196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.902196][ T72] ___sys_sendmsg+0xee/0x170 [ 263.902196][ T72] __sys_sendmsg+0xcd/0x170 [ 263.902196][ T72] do_syscall_64+0xc6/0x1e0 [ 263.902196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.902196][ T72] [ 263.905773][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 263.905773][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 263.905773][ T72] ipv6_find_idev+0x102/0x170 [ 263.905773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.905773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.905773][ T72] netlink_rcv_skb+0x130/0x360 [ 263.905773][ T72] netlink_unicast+0x449/0x710 [ 263.905773][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.905773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.905773][ T72] ___sys_sendmsg+0xee/0x170 [ 263.905773][ T72] __sys_sendmsg+0xcd/0x170 [ 263.905773][ T72] do_syscall_64+0xc6/0x1e0 [ 263.905773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.905773][ T72] [ 263.908643][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 263.908643][ T72] neigh_parms_alloc+0x1e5/0x510 [ 263.908643][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 263.908643][ T72] ipv6_find_idev+0x102/0x170 [ 263.908643][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 263.908643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 263.908643][ T72] netlink_rcv_skb+0x130/0x360 [ 263.908643][ T72] netlink_unicast+0x449/0x710 [ 263.908643][ T72] netlink_sendmsg+0x723/0xbe0 [ 263.908643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 263.908643][ T72] ___sys_sendmsg+0xee/0x170 [ 263.908643][ T72] __sys_sendmsg+0xcd/0x170 [ 263.908643][ T72] do_syscall_64+0xc6/0x1e0 [ 263.908643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 263.908643][ T72] [ 274.166846][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 274.167446][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 274.167446][ T72] netdev_get_by_index+0x5e/0x80 [ 274.167446][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.167446][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.167446][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.167446][ T72] ipv6_add_addr+0x411/0x2000 [ 274.167446][ T72] inet6_addr_add+0x30e/0xa40 [ 274.167446][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.167446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.167446][ T72] netlink_rcv_skb+0x130/0x360 [ 274.167446][ T72] netlink_unicast+0x449/0x710 [ 274.167446][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.167446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.167446][ T72] ___sys_sendmsg+0xee/0x170 [ 274.167446][ T72] __sys_sendmsg+0xcd/0x170 [ 274.167446][ T72] do_syscall_64+0xc6/0x1e0 [ 274.167446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.167446][ T72] [ 274.170637][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 274.170637][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.170637][ T72] ipv6_find_idev+0x102/0x170 [ 274.170637][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.170637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.170637][ T72] netlink_rcv_skb+0x130/0x360 [ 274.170637][ T72] netlink_unicast+0x449/0x710 [ 274.170637][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.170637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.170637][ T72] ___sys_sendmsg+0xee/0x170 [ 274.170637][ T72] __sys_sendmsg+0xcd/0x170 [ 274.170637][ T72] do_syscall_64+0xc6/0x1e0 [ 274.170637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.170637][ T72] [ 274.173109][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 274.173109][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.173109][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.173109][ T72] ipv6_find_idev+0x102/0x170 [ 274.173109][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.173109][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.173109][ T72] netlink_rcv_skb+0x130/0x360 [ 274.173109][ T72] netlink_unicast+0x449/0x710 [ 274.173109][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.173109][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.173109][ T72] ___sys_sendmsg+0xee/0x170 [ 274.173109][ T72] __sys_sendmsg+0xcd/0x170 [ 274.173109][ T72] do_syscall_64+0xc6/0x1e0 [ 274.173109][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.173109][ T72] [ 274.175822][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 274.176317][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 274.176317][ T72] netdev_get_by_index+0x5e/0x80 [ 274.176317][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.176317][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.176317][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.176317][ T72] ipv6_add_addr+0x411/0x2000 [ 274.176317][ T72] inet6_addr_add+0x30e/0xa40 [ 274.176317][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.176317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.176317][ T72] netlink_rcv_skb+0x130/0x360 [ 274.176317][ T72] netlink_unicast+0x449/0x710 [ 274.176317][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.176317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.176317][ T72] ___sys_sendmsg+0xee/0x170 [ 274.176317][ T72] __sys_sendmsg+0xcd/0x170 [ 274.176317][ T72] do_syscall_64+0xc6/0x1e0 [ 274.176317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.176317][ T72] [ 274.179549][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 274.179549][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.179549][ T72] ipv6_find_idev+0x102/0x170 [ 274.179549][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.179549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.179549][ T72] netlink_rcv_skb+0x130/0x360 [ 274.179549][ T72] netlink_unicast+0x449/0x710 [ 274.179549][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.179549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.179549][ T72] ___sys_sendmsg+0xee/0x170 [ 274.179549][ T72] __sys_sendmsg+0xcd/0x170 [ 274.179549][ T72] do_syscall_64+0xc6/0x1e0 [ 274.179549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.179549][ T72] [ 274.181981][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 274.181981][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.181981][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.181981][ T72] ipv6_find_idev+0x102/0x170 [ 274.181981][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.181981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.181981][ T72] netlink_rcv_skb+0x130/0x360 [ 274.181981][ T72] netlink_unicast+0x449/0x710 [ 274.181981][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.181981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.181981][ T72] ___sys_sendmsg+0xee/0x170 [ 274.181981][ T72] __sys_sendmsg+0xcd/0x170 [ 274.181981][ T72] do_syscall_64+0xc6/0x1e0 [ 274.181981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.181981][ T72] [ 274.184459][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 274.184799][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 274.184799][ T72] netdev_get_by_index+0x5e/0x80 [ 274.184799][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.184799][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.184799][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.184799][ T72] ipv6_add_addr+0x411/0x2000 [ 274.184799][ T72] inet6_addr_add+0x30e/0xa40 [ 274.184799][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.184799][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.184799][ T72] netlink_rcv_skb+0x130/0x360 [ 274.184799][ T72] netlink_unicast+0x449/0x710 [ 274.184799][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.184799][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.184799][ T72] ___sys_sendmsg+0xee/0x170 [ 274.184799][ T72] __sys_sendmsg+0xcd/0x170 [ 274.184799][ T72] do_syscall_64+0xc6/0x1e0 [ 274.184799][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.184799][ T72] [ 274.187929][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 274.187929][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.187929][ T72] ipv6_find_idev+0x102/0x170 [ 274.187929][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.187929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.187929][ T72] netlink_rcv_skb+0x130/0x360 [ 274.187929][ T72] netlink_unicast+0x449/0x710 [ 274.187929][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.187929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.187929][ T72] ___sys_sendmsg+0xee/0x170 [ 274.187929][ T72] __sys_sendmsg+0xcd/0x170 [ 274.187929][ T72] do_syscall_64+0xc6/0x1e0 [ 274.187929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.187929][ T72] [ 274.189492][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 274.189492][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.189492][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.189492][ T72] ipv6_find_idev+0x102/0x170 [ 274.189492][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.189492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.189492][ T72] netlink_rcv_skb+0x130/0x360 [ 274.189492][ T72] netlink_unicast+0x449/0x710 [ 274.189492][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.189492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.189492][ T72] ___sys_sendmsg+0xee/0x170 [ 274.189492][ T72] __sys_sendmsg+0xcd/0x170 [ 274.189492][ T72] do_syscall_64+0xc6/0x1e0 [ 274.189492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.189492][ T72] [ 274.191552][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 274.192290][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 274.192290][ T72] netdev_get_by_index+0x5e/0x80 [ 274.192290][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.192290][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.192290][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.192290][ T72] ipv6_add_addr+0x411/0x2000 [ 274.192290][ T72] inet6_addr_add+0x30e/0xa40 [ 274.192290][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.192290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.192290][ T72] netlink_rcv_skb+0x130/0x360 [ 274.192290][ T72] netlink_unicast+0x449/0x710 [ 274.192290][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.192290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.192290][ T72] ___sys_sendmsg+0xee/0x170 [ 274.192290][ T72] __sys_sendmsg+0xcd/0x170 [ 274.192290][ T72] do_syscall_64+0xc6/0x1e0 [ 274.192290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.192290][ T72] [ 274.194306][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 274.194306][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.194306][ T72] ipv6_find_idev+0x102/0x170 [ 274.194306][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.194306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.194306][ T72] netlink_rcv_skb+0x130/0x360 [ 274.194306][ T72] netlink_unicast+0x449/0x710 [ 274.194306][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.194306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.194306][ T72] ___sys_sendmsg+0xee/0x170 [ 274.194306][ T72] __sys_sendmsg+0xcd/0x170 [ 274.194306][ T72] do_syscall_64+0xc6/0x1e0 [ 274.194306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.194306][ T72] [ 274.195860][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 274.195860][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.195860][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.195860][ T72] ipv6_find_idev+0x102/0x170 [ 274.195860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.195860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.195860][ T72] netlink_rcv_skb+0x130/0x360 [ 274.195860][ T72] netlink_unicast+0x449/0x710 [ 274.195860][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.195860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.195860][ T72] ___sys_sendmsg+0xee/0x170 [ 274.195860][ T72] __sys_sendmsg+0xcd/0x170 [ 274.195860][ T72] do_syscall_64+0xc6/0x1e0 [ 274.195860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.195860][ T72] [ 274.197674][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 274.198003][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 274.198003][ T72] netdev_get_by_index+0x5e/0x80 [ 274.198003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.198003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.198003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.198003][ T72] ipv6_add_addr+0x411/0x2000 [ 274.198003][ T72] inet6_addr_add+0x30e/0xa40 [ 274.198003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.198003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.198003][ T72] netlink_rcv_skb+0x130/0x360 [ 274.198003][ T72] netlink_unicast+0x449/0x710 [ 274.198003][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.198003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.198003][ T72] ___sys_sendmsg+0xee/0x170 [ 274.198003][ T72] __sys_sendmsg+0xcd/0x170 [ 274.198003][ T72] do_syscall_64+0xc6/0x1e0 [ 274.198003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.198003][ T72] [ 274.200872][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 274.200872][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.200872][ T72] ipv6_find_idev+0x102/0x170 [ 274.200872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.200872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.200872][ T72] netlink_rcv_skb+0x130/0x360 [ 274.200872][ T72] netlink_unicast+0x449/0x710 [ 274.200872][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.200872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.200872][ T72] ___sys_sendmsg+0xee/0x170 [ 274.200872][ T72] __sys_sendmsg+0xcd/0x170 [ 274.200872][ T72] do_syscall_64+0xc6/0x1e0 [ 274.200872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.200872][ T72] [ 274.203279][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 274.203279][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.203279][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.203279][ T72] ipv6_find_idev+0x102/0x170 [ 274.203279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.203279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.203279][ T72] netlink_rcv_skb+0x130/0x360 [ 274.203279][ T72] netlink_unicast+0x449/0x710 [ 274.203279][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.203279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.203279][ T72] ___sys_sendmsg+0xee/0x170 [ 274.203279][ T72] __sys_sendmsg+0xcd/0x170 [ 274.203279][ T72] do_syscall_64+0xc6/0x1e0 [ 274.203279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.203279][ T72] [ 274.205885][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 274.206381][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 274.206381][ T72] netdev_get_by_index+0x5e/0x80 [ 274.206381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.206381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.206381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.206381][ T72] ipv6_add_addr+0x411/0x2000 [ 274.206381][ T72] inet6_addr_add+0x30e/0xa40 [ 274.206381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.206381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.206381][ T72] netlink_rcv_skb+0x130/0x360 [ 274.206381][ T72] netlink_unicast+0x449/0x710 [ 274.206381][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.206381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.206381][ T72] ___sys_sendmsg+0xee/0x170 [ 274.206381][ T72] __sys_sendmsg+0xcd/0x170 [ 274.206381][ T72] do_syscall_64+0xc6/0x1e0 [ 274.206381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.206381][ T72] [ 274.209368][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 274.209368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.209368][ T72] ipv6_find_idev+0x102/0x170 [ 274.209368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.209368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.209368][ T72] netlink_rcv_skb+0x130/0x360 [ 274.209368][ T72] netlink_unicast+0x449/0x710 [ 274.209368][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.209368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.209368][ T72] ___sys_sendmsg+0xee/0x170 [ 274.209368][ T72] __sys_sendmsg+0xcd/0x170 [ 274.209368][ T72] do_syscall_64+0xc6/0x1e0 [ 274.209368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.209368][ T72] [ 274.212082][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 274.212082][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.212082][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.212082][ T72] ipv6_find_idev+0x102/0x170 [ 274.212082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.212082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.212082][ T72] netlink_rcv_skb+0x130/0x360 [ 274.212082][ T72] netlink_unicast+0x449/0x710 [ 274.212082][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.212082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.212082][ T72] ___sys_sendmsg+0xee/0x170 [ 274.212082][ T72] __sys_sendmsg+0xcd/0x170 [ 274.212082][ T72] do_syscall_64+0xc6/0x1e0 [ 274.212082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.212082][ T72] [ 274.215220][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 274.215725][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 274.215725][ T72] netdev_get_by_index+0x5e/0x80 [ 274.215725][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.215725][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.215725][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.215725][ T72] ipv6_add_addr+0x411/0x2000 [ 274.215725][ T72] inet6_addr_add+0x30e/0xa40 [ 274.215725][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.215725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.215725][ T72] netlink_rcv_skb+0x130/0x360 [ 274.215725][ T72] netlink_unicast+0x449/0x710 [ 274.215725][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.215725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.215725][ T72] ___sys_sendmsg+0xee/0x170 [ 274.215725][ T72] __sys_sendmsg+0xcd/0x170 [ 274.215725][ T72] do_syscall_64+0xc6/0x1e0 [ 274.215725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.215725][ T72] [ 274.219222][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 274.219222][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.219222][ T72] ipv6_find_idev+0x102/0x170 [ 274.219222][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.219222][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.219222][ T72] netlink_rcv_skb+0x130/0x360 [ 274.219222][ T72] netlink_unicast+0x449/0x710 [ 274.219222][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.219222][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.219222][ T72] ___sys_sendmsg+0xee/0x170 [ 274.219222][ T72] __sys_sendmsg+0xcd/0x170 [ 274.219222][ T72] do_syscall_64+0xc6/0x1e0 [ 274.219222][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.219222][ T72] [ 274.221906][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 274.221906][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.221906][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.221906][ T72] ipv6_find_idev+0x102/0x170 [ 274.221906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.221906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.221906][ T72] netlink_rcv_skb+0x130/0x360 [ 274.221906][ T72] netlink_unicast+0x449/0x710 [ 274.221906][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.221906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.221906][ T72] ___sys_sendmsg+0xee/0x170 [ 274.221906][ T72] __sys_sendmsg+0xcd/0x170 [ 274.221906][ T72] do_syscall_64+0xc6/0x1e0 [ 274.221906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.221906][ T72] [ 274.224892][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 274.225407][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 274.225407][ T72] netdev_get_by_index+0x5e/0x80 [ 274.225407][ T72] fib6_nh_init+0x3d8/0x15b0 [ 274.225407][ T72] ip6_route_info_create+0xf18/0x17d0 [ 274.225407][ T72] addrconf_f6i_alloc+0x244/0x410 [ 274.225407][ T72] ipv6_add_addr+0x411/0x2000 [ 274.225407][ T72] inet6_addr_add+0x30e/0xa40 [ 274.225407][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 274.225407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.225407][ T72] netlink_rcv_skb+0x130/0x360 [ 274.225407][ T72] netlink_unicast+0x449/0x710 [ 274.225407][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.225407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.225407][ T72] ___sys_sendmsg+0xee/0x170 [ 274.225407][ T72] __sys_sendmsg+0xcd/0x170 [ 274.225407][ T72] do_syscall_64+0xc6/0x1e0 [ 274.225407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.225407][ T72] [ 274.228846][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 274.228846][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 274.228846][ T72] ipv6_find_idev+0x102/0x170 [ 274.228846][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.228846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.228846][ T72] netlink_rcv_skb+0x130/0x360 [ 274.228846][ T72] netlink_unicast+0x449/0x710 [ 274.228846][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.228846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.228846][ T72] ___sys_sendmsg+0xee/0x170 [ 274.228846][ T72] __sys_sendmsg+0xcd/0x170 [ 274.228846][ T72] do_syscall_64+0xc6/0x1e0 [ 274.228846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.228846][ T72] [ 274.231570][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 274.231570][ T72] neigh_parms_alloc+0x1e5/0x510 [ 274.231570][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 274.231570][ T72] ipv6_find_idev+0x102/0x170 [ 274.231570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 274.231570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 274.231570][ T72] netlink_rcv_skb+0x130/0x360 [ 274.231570][ T72] netlink_unicast+0x449/0x710 [ 274.231570][ T72] netlink_sendmsg+0x723/0xbe0 [ 274.231570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 274.231570][ T72] ___sys_sendmsg+0xee/0x170 [ 274.231570][ T72] __sys_sendmsg+0xcd/0x170 [ 274.231570][ T72] do_syscall_64+0xc6/0x1e0 [ 274.231570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 274.231570][ T72] [ 284.486830][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 284.487259][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 284.487259][ T72] netdev_get_by_index+0x5e/0x80 [ 284.487259][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.487259][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.487259][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.487259][ T72] ipv6_add_addr+0x411/0x2000 [ 284.487259][ T72] inet6_addr_add+0x30e/0xa40 [ 284.487259][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.487259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.487259][ T72] netlink_rcv_skb+0x130/0x360 [ 284.487259][ T72] netlink_unicast+0x449/0x710 [ 284.487259][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.487259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.487259][ T72] ___sys_sendmsg+0xee/0x170 [ 284.487259][ T72] __sys_sendmsg+0xcd/0x170 [ 284.487259][ T72] do_syscall_64+0xc6/0x1e0 [ 284.487259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.487259][ T72] [ 284.489257][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 284.489257][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.489257][ T72] ipv6_find_idev+0x102/0x170 [ 284.489257][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.489257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.489257][ T72] netlink_rcv_skb+0x130/0x360 [ 284.489257][ T72] netlink_unicast+0x449/0x710 [ 284.489257][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.489257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.489257][ T72] ___sys_sendmsg+0xee/0x170 [ 284.489257][ T72] __sys_sendmsg+0xcd/0x170 [ 284.489257][ T72] do_syscall_64+0xc6/0x1e0 [ 284.489257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.489257][ T72] [ 284.490808][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 284.490808][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.490808][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.490808][ T72] ipv6_find_idev+0x102/0x170 [ 284.490808][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.490808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.490808][ T72] netlink_rcv_skb+0x130/0x360 [ 284.490808][ T72] netlink_unicast+0x449/0x710 [ 284.490808][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.490808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.490808][ T72] ___sys_sendmsg+0xee/0x170 [ 284.490808][ T72] __sys_sendmsg+0xcd/0x170 [ 284.490808][ T72] do_syscall_64+0xc6/0x1e0 [ 284.490808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.490808][ T72] [ 284.492652][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 284.493266][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 284.493266][ T72] netdev_get_by_index+0x5e/0x80 [ 284.493266][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.493266][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.493266][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.493266][ T72] ipv6_add_addr+0x411/0x2000 [ 284.493266][ T72] inet6_addr_add+0x30e/0xa40 [ 284.493266][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.493266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.493266][ T72] netlink_rcv_skb+0x130/0x360 [ 284.493266][ T72] netlink_unicast+0x449/0x710 [ 284.493266][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.493266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.493266][ T72] ___sys_sendmsg+0xee/0x170 [ 284.493266][ T72] __sys_sendmsg+0xcd/0x170 [ 284.493266][ T72] do_syscall_64+0xc6/0x1e0 [ 284.493266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.493266][ T72] [ 284.495311][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 284.495311][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.495311][ T72] ipv6_find_idev+0x102/0x170 [ 284.495311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.495311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.495311][ T72] netlink_rcv_skb+0x130/0x360 [ 284.495311][ T72] netlink_unicast+0x449/0x710 [ 284.495311][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.495311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.495311][ T72] ___sys_sendmsg+0xee/0x170 [ 284.495311][ T72] __sys_sendmsg+0xcd/0x170 [ 284.495311][ T72] do_syscall_64+0xc6/0x1e0 [ 284.495311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.495311][ T72] [ 284.497101][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 284.497101][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.497101][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.497101][ T72] ipv6_find_idev+0x102/0x170 [ 284.497101][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.497101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.497101][ T72] netlink_rcv_skb+0x130/0x360 [ 284.497101][ T72] netlink_unicast+0x449/0x710 [ 284.497101][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.497101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.497101][ T72] ___sys_sendmsg+0xee/0x170 [ 284.497101][ T72] __sys_sendmsg+0xcd/0x170 [ 284.497101][ T72] do_syscall_64+0xc6/0x1e0 [ 284.497101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.497101][ T72] [ 284.499167][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 284.499488][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 284.499488][ T72] netdev_get_by_index+0x5e/0x80 [ 284.499488][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.499488][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.499488][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.499488][ T72] ipv6_add_addr+0x411/0x2000 [ 284.499488][ T72] inet6_addr_add+0x30e/0xa40 [ 284.499488][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.499488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.499488][ T72] netlink_rcv_skb+0x130/0x360 [ 284.499488][ T72] netlink_unicast+0x449/0x710 [ 284.499488][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.499488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.499488][ T72] ___sys_sendmsg+0xee/0x170 [ 284.499488][ T72] __sys_sendmsg+0xcd/0x170 [ 284.499488][ T72] do_syscall_64+0xc6/0x1e0 [ 284.499488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.499488][ T72] [ 284.501527][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 284.501527][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.501527][ T72] ipv6_find_idev+0x102/0x170 [ 284.501527][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.501527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.501527][ T72] netlink_rcv_skb+0x130/0x360 [ 284.501527][ T72] netlink_unicast+0x449/0x710 [ 284.501527][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.501527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.501527][ T72] ___sys_sendmsg+0xee/0x170 [ 284.501527][ T72] __sys_sendmsg+0xcd/0x170 [ 284.501527][ T72] do_syscall_64+0xc6/0x1e0 [ 284.501527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.501527][ T72] [ 284.503069][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 284.503069][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.503069][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.503069][ T72] ipv6_find_idev+0x102/0x170 [ 284.503069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.503069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.503069][ T72] netlink_rcv_skb+0x130/0x360 [ 284.503069][ T72] netlink_unicast+0x449/0x710 [ 284.503069][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.503069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.503069][ T72] ___sys_sendmsg+0xee/0x170 [ 284.503069][ T72] __sys_sendmsg+0xcd/0x170 [ 284.503069][ T72] do_syscall_64+0xc6/0x1e0 [ 284.503069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.503069][ T72] [ 284.504810][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 284.505124][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 284.505124][ T72] netdev_get_by_index+0x5e/0x80 [ 284.505124][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.505124][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.505124][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.505124][ T72] ipv6_add_addr+0x411/0x2000 [ 284.505124][ T72] inet6_addr_add+0x30e/0xa40 [ 284.505124][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.505124][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.505124][ T72] netlink_rcv_skb+0x130/0x360 [ 284.505124][ T72] netlink_unicast+0x449/0x710 [ 284.505124][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.505124][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.505124][ T72] ___sys_sendmsg+0xee/0x170 [ 284.505124][ T72] __sys_sendmsg+0xcd/0x170 [ 284.505124][ T72] do_syscall_64+0xc6/0x1e0 [ 284.505124][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.505124][ T72] [ 284.507153][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 284.507153][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.507153][ T72] ipv6_find_idev+0x102/0x170 [ 284.507153][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.507153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.507153][ T72] netlink_rcv_skb+0x130/0x360 [ 284.507153][ T72] netlink_unicast+0x449/0x710 [ 284.507153][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.507153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.507153][ T72] ___sys_sendmsg+0xee/0x170 [ 284.507153][ T72] __sys_sendmsg+0xcd/0x170 [ 284.507153][ T72] do_syscall_64+0xc6/0x1e0 [ 284.507153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.507153][ T72] [ 284.508720][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 284.508720][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.508720][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.508720][ T72] ipv6_find_idev+0x102/0x170 [ 284.508720][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.508720][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.508720][ T72] netlink_rcv_skb+0x130/0x360 [ 284.508720][ T72] netlink_unicast+0x449/0x710 [ 284.508720][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.508720][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.508720][ T72] ___sys_sendmsg+0xee/0x170 [ 284.508720][ T72] __sys_sendmsg+0xcd/0x170 [ 284.508720][ T72] do_syscall_64+0xc6/0x1e0 [ 284.508720][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.508720][ T72] [ 284.510909][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 284.511229][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 284.511229][ T72] netdev_get_by_index+0x5e/0x80 [ 284.511229][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.511229][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.511229][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.511229][ T72] ipv6_add_addr+0x411/0x2000 [ 284.511229][ T72] inet6_addr_add+0x30e/0xa40 [ 284.511229][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.511229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.511229][ T72] netlink_rcv_skb+0x130/0x360 [ 284.511229][ T72] netlink_unicast+0x449/0x710 [ 284.511229][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.511229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.511229][ T72] ___sys_sendmsg+0xee/0x170 [ 284.511229][ T72] __sys_sendmsg+0xcd/0x170 [ 284.511229][ T72] do_syscall_64+0xc6/0x1e0 [ 284.511229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.511229][ T72] [ 284.513227][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 284.513227][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.513227][ T72] ipv6_find_idev+0x102/0x170 [ 284.513227][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.513227][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.513227][ T72] netlink_rcv_skb+0x130/0x360 [ 284.513227][ T72] netlink_unicast+0x449/0x710 [ 284.513227][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.513227][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.513227][ T72] ___sys_sendmsg+0xee/0x170 [ 284.513227][ T72] __sys_sendmsg+0xcd/0x170 [ 284.513227][ T72] do_syscall_64+0xc6/0x1e0 [ 284.513227][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.513227][ T72] [ 284.514769][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 284.514769][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.514769][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.514769][ T72] ipv6_find_idev+0x102/0x170 [ 284.514769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.514769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.514769][ T72] netlink_rcv_skb+0x130/0x360 [ 284.514769][ T72] netlink_unicast+0x449/0x710 [ 284.514769][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.514769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.514769][ T72] ___sys_sendmsg+0xee/0x170 [ 284.514769][ T72] __sys_sendmsg+0xcd/0x170 [ 284.514769][ T72] do_syscall_64+0xc6/0x1e0 [ 284.514769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.514769][ T72] [ 284.516550][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 284.516891][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 284.516891][ T72] netdev_get_by_index+0x5e/0x80 [ 284.516891][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.516891][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.516891][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.516891][ T72] ipv6_add_addr+0x411/0x2000 [ 284.516891][ T72] inet6_addr_add+0x30e/0xa40 [ 284.516891][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.516891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.516891][ T72] netlink_rcv_skb+0x130/0x360 [ 284.516891][ T72] netlink_unicast+0x449/0x710 [ 284.516891][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.516891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.516891][ T72] ___sys_sendmsg+0xee/0x170 [ 284.516891][ T72] __sys_sendmsg+0xcd/0x170 [ 284.516891][ T72] do_syscall_64+0xc6/0x1e0 [ 284.516891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.516891][ T72] [ 284.519020][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 284.519020][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.519020][ T72] ipv6_find_idev+0x102/0x170 [ 284.519020][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.519020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.519020][ T72] netlink_rcv_skb+0x130/0x360 [ 284.519020][ T72] netlink_unicast+0x449/0x710 [ 284.519020][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.519020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.519020][ T72] ___sys_sendmsg+0xee/0x170 [ 284.519020][ T72] __sys_sendmsg+0xcd/0x170 [ 284.519020][ T72] do_syscall_64+0xc6/0x1e0 [ 284.519020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.519020][ T72] [ 284.520796][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 284.520796][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.520796][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.520796][ T72] ipv6_find_idev+0x102/0x170 [ 284.520796][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.520796][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.520796][ T72] netlink_rcv_skb+0x130/0x360 [ 284.520796][ T72] netlink_unicast+0x449/0x710 [ 284.520796][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.520796][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.520796][ T72] ___sys_sendmsg+0xee/0x170 [ 284.520796][ T72] __sys_sendmsg+0xcd/0x170 [ 284.520796][ T72] do_syscall_64+0xc6/0x1e0 [ 284.520796][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.520796][ T72] [ 284.522802][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 284.523125][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 284.523125][ T72] netdev_get_by_index+0x5e/0x80 [ 284.523125][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.523125][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.523125][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.523125][ T72] ipv6_add_addr+0x411/0x2000 [ 284.523125][ T72] inet6_addr_add+0x30e/0xa40 [ 284.523125][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.523125][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.523125][ T72] netlink_rcv_skb+0x130/0x360 [ 284.523125][ T72] netlink_unicast+0x449/0x710 [ 284.523125][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.523125][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.523125][ T72] ___sys_sendmsg+0xee/0x170 [ 284.523125][ T72] __sys_sendmsg+0xcd/0x170 [ 284.523125][ T72] do_syscall_64+0xc6/0x1e0 [ 284.523125][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.523125][ T72] [ 284.525330][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 284.525330][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.525330][ T72] ipv6_find_idev+0x102/0x170 [ 284.525330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.525330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.525330][ T72] netlink_rcv_skb+0x130/0x360 [ 284.525330][ T72] netlink_unicast+0x449/0x710 [ 284.525330][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.525330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.525330][ T72] ___sys_sendmsg+0xee/0x170 [ 284.525330][ T72] __sys_sendmsg+0xcd/0x170 [ 284.525330][ T72] do_syscall_64+0xc6/0x1e0 [ 284.525330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.525330][ T72] [ 284.527110][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 284.527110][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.527110][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.527110][ T72] ipv6_find_idev+0x102/0x170 [ 284.527110][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.527110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.527110][ T72] netlink_rcv_skb+0x130/0x360 [ 284.527110][ T72] netlink_unicast+0x449/0x710 [ 284.527110][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.527110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.527110][ T72] ___sys_sendmsg+0xee/0x170 [ 284.527110][ T72] __sys_sendmsg+0xcd/0x170 [ 284.527110][ T72] do_syscall_64+0xc6/0x1e0 [ 284.527110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.527110][ T72] [ 284.529223][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 284.529569][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 284.529569][ T72] netdev_get_by_index+0x5e/0x80 [ 284.529569][ T72] fib6_nh_init+0x3d8/0x15b0 [ 284.529569][ T72] ip6_route_info_create+0xf18/0x17d0 [ 284.529569][ T72] addrconf_f6i_alloc+0x244/0x410 [ 284.529569][ T72] ipv6_add_addr+0x411/0x2000 [ 284.529569][ T72] inet6_addr_add+0x30e/0xa40 [ 284.529569][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 284.529569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.529569][ T72] netlink_rcv_skb+0x130/0x360 [ 284.529569][ T72] netlink_unicast+0x449/0x710 [ 284.529569][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.529569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.529569][ T72] ___sys_sendmsg+0xee/0x170 [ 284.529569][ T72] __sys_sendmsg+0xcd/0x170 [ 284.529569][ T72] do_syscall_64+0xc6/0x1e0 [ 284.529569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.529569][ T72] [ 284.531905][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 284.531905][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 284.531905][ T72] ipv6_find_idev+0x102/0x170 [ 284.531905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.531905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.531905][ T72] netlink_rcv_skb+0x130/0x360 [ 284.531905][ T72] netlink_unicast+0x449/0x710 [ 284.531905][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.531905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.531905][ T72] ___sys_sendmsg+0xee/0x170 [ 284.531905][ T72] __sys_sendmsg+0xcd/0x170 [ 284.531905][ T72] do_syscall_64+0xc6/0x1e0 [ 284.531905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.531905][ T72] [ 284.533565][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 284.533565][ T72] neigh_parms_alloc+0x1e5/0x510 [ 284.533565][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 284.533565][ T72] ipv6_find_idev+0x102/0x170 [ 284.533565][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 284.533565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 284.533565][ T72] netlink_rcv_skb+0x130/0x360 [ 284.533565][ T72] netlink_unicast+0x449/0x710 [ 284.533565][ T72] netlink_sendmsg+0x723/0xbe0 [ 284.533565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 284.533565][ T72] ___sys_sendmsg+0xee/0x170 [ 284.533565][ T72] __sys_sendmsg+0xcd/0x170 [ 284.533565][ T72] do_syscall_64+0xc6/0x1e0 [ 284.533565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 284.533565][ T72] [ 294.710798][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 294.711289][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 294.711289][ T72] netdev_get_by_index+0x5e/0x80 [ 294.711289][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.711289][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.711289][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.711289][ T72] ipv6_add_addr+0x411/0x2000 [ 294.711289][ T72] inet6_addr_add+0x30e/0xa40 [ 294.711289][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.711289][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.711289][ T72] netlink_rcv_skb+0x130/0x360 [ 294.711289][ T72] netlink_unicast+0x449/0x710 [ 294.711289][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.711289][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.711289][ T72] ___sys_sendmsg+0xee/0x170 [ 294.711289][ T72] __sys_sendmsg+0xcd/0x170 [ 294.711289][ T72] do_syscall_64+0xc6/0x1e0 [ 294.711289][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.711289][ T72] [ 294.713510][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 294.713510][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.713510][ T72] ipv6_find_idev+0x102/0x170 [ 294.713510][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.713510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.713510][ T72] netlink_rcv_skb+0x130/0x360 [ 294.713510][ T72] netlink_unicast+0x449/0x710 [ 294.713510][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.713510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.713510][ T72] ___sys_sendmsg+0xee/0x170 [ 294.713510][ T72] __sys_sendmsg+0xcd/0x170 [ 294.713510][ T72] do_syscall_64+0xc6/0x1e0 [ 294.713510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.713510][ T72] [ 294.715203][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 294.715203][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.715203][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.715203][ T72] ipv6_find_idev+0x102/0x170 [ 294.715203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.715203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.715203][ T72] netlink_rcv_skb+0x130/0x360 [ 294.715203][ T72] netlink_unicast+0x449/0x710 [ 294.715203][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.715203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.715203][ T72] ___sys_sendmsg+0xee/0x170 [ 294.715203][ T72] __sys_sendmsg+0xcd/0x170 [ 294.715203][ T72] do_syscall_64+0xc6/0x1e0 [ 294.715203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.715203][ T72] [ 294.717067][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 294.717366][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 294.717366][ T72] netdev_get_by_index+0x5e/0x80 [ 294.717366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.717366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.717366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.717366][ T72] ipv6_add_addr+0x411/0x2000 [ 294.717366][ T72] inet6_addr_add+0x30e/0xa40 [ 294.717366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.717366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.717366][ T72] netlink_rcv_skb+0x130/0x360 [ 294.717366][ T72] netlink_unicast+0x449/0x710 [ 294.717366][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.717366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.717366][ T72] ___sys_sendmsg+0xee/0x170 [ 294.717366][ T72] __sys_sendmsg+0xcd/0x170 [ 294.717366][ T72] do_syscall_64+0xc6/0x1e0 [ 294.717366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.717366][ T72] [ 294.719590][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 294.719590][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.719590][ T72] ipv6_find_idev+0x102/0x170 [ 294.719590][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.719590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.719590][ T72] netlink_rcv_skb+0x130/0x360 [ 294.719590][ T72] netlink_unicast+0x449/0x710 [ 294.719590][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.719590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.719590][ T72] ___sys_sendmsg+0xee/0x170 [ 294.719590][ T72] __sys_sendmsg+0xcd/0x170 [ 294.719590][ T72] do_syscall_64+0xc6/0x1e0 [ 294.719590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.719590][ T72] [ 294.721309][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 294.721309][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.721309][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.721309][ T72] ipv6_find_idev+0x102/0x170 [ 294.721309][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.721309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.721309][ T72] netlink_rcv_skb+0x130/0x360 [ 294.721309][ T72] netlink_unicast+0x449/0x710 [ 294.721309][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.721309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.721309][ T72] ___sys_sendmsg+0xee/0x170 [ 294.721309][ T72] __sys_sendmsg+0xcd/0x170 [ 294.721309][ T72] do_syscall_64+0xc6/0x1e0 [ 294.721309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.721309][ T72] [ 294.723166][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 294.723464][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 294.723464][ T72] netdev_get_by_index+0x5e/0x80 [ 294.723464][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.723464][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.723464][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.723464][ T72] ipv6_add_addr+0x411/0x2000 [ 294.723464][ T72] inet6_addr_add+0x30e/0xa40 [ 294.723464][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.723464][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.723464][ T72] netlink_rcv_skb+0x130/0x360 [ 294.723464][ T72] netlink_unicast+0x449/0x710 [ 294.723464][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.723464][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.723464][ T72] ___sys_sendmsg+0xee/0x170 [ 294.723464][ T72] __sys_sendmsg+0xcd/0x170 [ 294.723464][ T72] do_syscall_64+0xc6/0x1e0 [ 294.723464][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.723464][ T72] [ 294.725670][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 294.725670][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.725670][ T72] ipv6_find_idev+0x102/0x170 [ 294.725670][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.725670][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.725670][ T72] netlink_rcv_skb+0x130/0x360 [ 294.725670][ T72] netlink_unicast+0x449/0x710 [ 294.725670][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.725670][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.725670][ T72] ___sys_sendmsg+0xee/0x170 [ 294.725670][ T72] __sys_sendmsg+0xcd/0x170 [ 294.725670][ T72] do_syscall_64+0xc6/0x1e0 [ 294.725670][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.725670][ T72] [ 294.727377][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 294.727377][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.727377][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.727377][ T72] ipv6_find_idev+0x102/0x170 [ 294.727377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.727377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.727377][ T72] netlink_rcv_skb+0x130/0x360 [ 294.727377][ T72] netlink_unicast+0x449/0x710 [ 294.727377][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.727377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.727377][ T72] ___sys_sendmsg+0xee/0x170 [ 294.727377][ T72] __sys_sendmsg+0xcd/0x170 [ 294.727377][ T72] do_syscall_64+0xc6/0x1e0 [ 294.727377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.727377][ T72] [ 294.729232][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 294.729535][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 294.729535][ T72] netdev_get_by_index+0x5e/0x80 [ 294.729535][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.729535][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.729535][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.729535][ T72] ipv6_add_addr+0x411/0x2000 [ 294.729535][ T72] inet6_addr_add+0x30e/0xa40 [ 294.729535][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.729535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.729535][ T72] netlink_rcv_skb+0x130/0x360 [ 294.729535][ T72] netlink_unicast+0x449/0x710 [ 294.729535][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.729535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.729535][ T72] ___sys_sendmsg+0xee/0x170 [ 294.729535][ T72] __sys_sendmsg+0xcd/0x170 [ 294.729535][ T72] do_syscall_64+0xc6/0x1e0 [ 294.729535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.729535][ T72] [ 294.731757][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 294.731757][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.731757][ T72] ipv6_find_idev+0x102/0x170 [ 294.731757][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.731757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.731757][ T72] netlink_rcv_skb+0x130/0x360 [ 294.731757][ T72] netlink_unicast+0x449/0x710 [ 294.731757][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.731757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.731757][ T72] ___sys_sendmsg+0xee/0x170 [ 294.731757][ T72] __sys_sendmsg+0xcd/0x170 [ 294.731757][ T72] do_syscall_64+0xc6/0x1e0 [ 294.731757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.731757][ T72] [ 294.733472][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 294.733472][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.733472][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.733472][ T72] ipv6_find_idev+0x102/0x170 [ 294.733472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.733472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.733472][ T72] netlink_rcv_skb+0x130/0x360 [ 294.733472][ T72] netlink_unicast+0x449/0x710 [ 294.733472][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.733472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.733472][ T72] ___sys_sendmsg+0xee/0x170 [ 294.733472][ T72] __sys_sendmsg+0xcd/0x170 [ 294.733472][ T72] do_syscall_64+0xc6/0x1e0 [ 294.733472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.733472][ T72] [ 294.735752][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 294.736043][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 294.736043][ T72] netdev_get_by_index+0x5e/0x80 [ 294.736043][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.736043][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.736043][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.736043][ T72] ipv6_add_addr+0x411/0x2000 [ 294.736043][ T72] inet6_addr_add+0x30e/0xa40 [ 294.736043][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.736043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.736043][ T72] netlink_rcv_skb+0x130/0x360 [ 294.736043][ T72] netlink_unicast+0x449/0x710 [ 294.736043][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.736043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.736043][ T72] ___sys_sendmsg+0xee/0x170 [ 294.736043][ T72] __sys_sendmsg+0xcd/0x170 [ 294.736043][ T72] do_syscall_64+0xc6/0x1e0 [ 294.736043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.736043][ T72] [ 294.738239][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 294.738239][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.738239][ T72] ipv6_find_idev+0x102/0x170 [ 294.738239][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.738239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.738239][ T72] netlink_rcv_skb+0x130/0x360 [ 294.738239][ T72] netlink_unicast+0x449/0x710 [ 294.738239][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.738239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.738239][ T72] ___sys_sendmsg+0xee/0x170 [ 294.738239][ T72] __sys_sendmsg+0xcd/0x170 [ 294.738239][ T72] do_syscall_64+0xc6/0x1e0 [ 294.738239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.738239][ T72] [ 294.739957][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 294.739957][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.739957][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.739957][ T72] ipv6_find_idev+0x102/0x170 [ 294.739957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.739957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.739957][ T72] netlink_rcv_skb+0x130/0x360 [ 294.739957][ T72] netlink_unicast+0x449/0x710 [ 294.739957][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.739957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.739957][ T72] ___sys_sendmsg+0xee/0x170 [ 294.739957][ T72] __sys_sendmsg+0xcd/0x170 [ 294.739957][ T72] do_syscall_64+0xc6/0x1e0 [ 294.739957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.739957][ T72] [ 294.741851][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 294.742139][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 294.742139][ T72] netdev_get_by_index+0x5e/0x80 [ 294.742139][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.742139][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.742139][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.742139][ T72] ipv6_add_addr+0x411/0x2000 [ 294.742139][ T72] inet6_addr_add+0x30e/0xa40 [ 294.742139][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.742139][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.742139][ T72] netlink_rcv_skb+0x130/0x360 [ 294.742139][ T72] netlink_unicast+0x449/0x710 [ 294.742139][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.742139][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.742139][ T72] ___sys_sendmsg+0xee/0x170 [ 294.742139][ T72] __sys_sendmsg+0xcd/0x170 [ 294.742139][ T72] do_syscall_64+0xc6/0x1e0 [ 294.742139][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.742139][ T72] [ 294.744458][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 294.744458][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.744458][ T72] ipv6_find_idev+0x102/0x170 [ 294.744458][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.744458][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.744458][ T72] netlink_rcv_skb+0x130/0x360 [ 294.744458][ T72] netlink_unicast+0x449/0x710 [ 294.744458][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.744458][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.744458][ T72] ___sys_sendmsg+0xee/0x170 [ 294.744458][ T72] __sys_sendmsg+0xcd/0x170 [ 294.744458][ T72] do_syscall_64+0xc6/0x1e0 [ 294.744458][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.744458][ T72] [ 294.746327][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 294.746327][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.746327][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.746327][ T72] ipv6_find_idev+0x102/0x170 [ 294.746327][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.746327][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.746327][ T72] netlink_rcv_skb+0x130/0x360 [ 294.746327][ T72] netlink_unicast+0x449/0x710 [ 294.746327][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.746327][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.746327][ T72] ___sys_sendmsg+0xee/0x170 [ 294.746327][ T72] __sys_sendmsg+0xcd/0x170 [ 294.746327][ T72] do_syscall_64+0xc6/0x1e0 [ 294.746327][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.746327][ T72] [ 294.748394][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 294.748676][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 294.748676][ T72] netdev_get_by_index+0x5e/0x80 [ 294.748676][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.748676][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.748676][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.748676][ T72] ipv6_add_addr+0x411/0x2000 [ 294.748676][ T72] inet6_addr_add+0x30e/0xa40 [ 294.748676][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.748676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.748676][ T72] netlink_rcv_skb+0x130/0x360 [ 294.748676][ T72] netlink_unicast+0x449/0x710 [ 294.748676][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.748676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.748676][ T72] ___sys_sendmsg+0xee/0x170 [ 294.748676][ T72] __sys_sendmsg+0xcd/0x170 [ 294.748676][ T72] do_syscall_64+0xc6/0x1e0 [ 294.748676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.748676][ T72] [ 294.751146][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 294.751146][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.751146][ T72] ipv6_find_idev+0x102/0x170 [ 294.751146][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.751146][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.751146][ T72] netlink_rcv_skb+0x130/0x360 [ 294.751146][ T72] netlink_unicast+0x449/0x710 [ 294.751146][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.751146][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.751146][ T72] ___sys_sendmsg+0xee/0x170 [ 294.751146][ T72] __sys_sendmsg+0xcd/0x170 [ 294.751146][ T72] do_syscall_64+0xc6/0x1e0 [ 294.751146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.751146][ T72] [ 294.753084][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 294.753084][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.753084][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.753084][ T72] ipv6_find_idev+0x102/0x170 [ 294.753084][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.753084][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.753084][ T72] netlink_rcv_skb+0x130/0x360 [ 294.753084][ T72] netlink_unicast+0x449/0x710 [ 294.753084][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.753084][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.753084][ T72] ___sys_sendmsg+0xee/0x170 [ 294.753084][ T72] __sys_sendmsg+0xcd/0x170 [ 294.753084][ T72] do_syscall_64+0xc6/0x1e0 [ 294.753084][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.753084][ T72] [ 294.755154][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 294.755444][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 294.755444][ T72] netdev_get_by_index+0x5e/0x80 [ 294.755444][ T72] fib6_nh_init+0x3d8/0x15b0 [ 294.755444][ T72] ip6_route_info_create+0xf18/0x17d0 [ 294.755444][ T72] addrconf_f6i_alloc+0x244/0x410 [ 294.755444][ T72] ipv6_add_addr+0x411/0x2000 [ 294.755444][ T72] inet6_addr_add+0x30e/0xa40 [ 294.755444][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 294.755444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.755444][ T72] netlink_rcv_skb+0x130/0x360 [ 294.755444][ T72] netlink_unicast+0x449/0x710 [ 294.755444][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.755444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.755444][ T72] ___sys_sendmsg+0xee/0x170 [ 294.755444][ T72] __sys_sendmsg+0xcd/0x170 [ 294.755444][ T72] do_syscall_64+0xc6/0x1e0 [ 294.755444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.755444][ T72] [ 294.757872][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 294.757872][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 294.757872][ T72] ipv6_find_idev+0x102/0x170 [ 294.757872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.757872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.757872][ T72] netlink_rcv_skb+0x130/0x360 [ 294.757872][ T72] netlink_unicast+0x449/0x710 [ 294.757872][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.757872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.757872][ T72] ___sys_sendmsg+0xee/0x170 [ 294.757872][ T72] __sys_sendmsg+0xcd/0x170 [ 294.757872][ T72] do_syscall_64+0xc6/0x1e0 [ 294.757872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.757872][ T72] [ 294.759763][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 294.759763][ T72] neigh_parms_alloc+0x1e5/0x510 [ 294.759763][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 294.759763][ T72] ipv6_find_idev+0x102/0x170 [ 294.759763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 294.759763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 294.759763][ T72] netlink_rcv_skb+0x130/0x360 [ 294.759763][ T72] netlink_unicast+0x449/0x710 [ 294.759763][ T72] netlink_sendmsg+0x723/0xbe0 [ 294.759763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 294.759763][ T72] ___sys_sendmsg+0xee/0x170 [ 294.759763][ T72] __sys_sendmsg+0xcd/0x170 [ 294.759763][ T72] do_syscall_64+0xc6/0x1e0 [ 294.759763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 294.759763][ T72] [ 304.998902][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 304.999303][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 304.999303][ T72] netdev_get_by_index+0x5e/0x80 [ 304.999303][ T72] fib6_nh_init+0x3d8/0x15b0 [ 304.999303][ T72] ip6_route_info_create+0xf18/0x17d0 [ 304.999303][ T72] addrconf_f6i_alloc+0x244/0x410 [ 304.999303][ T72] ipv6_add_addr+0x411/0x2000 [ 304.999303][ T72] inet6_addr_add+0x30e/0xa40 [ 304.999303][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 304.999303][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 304.999303][ T72] netlink_rcv_skb+0x130/0x360 [ 304.999303][ T72] netlink_unicast+0x449/0x710 [ 304.999303][ T72] netlink_sendmsg+0x723/0xbe0 [ 304.999303][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 304.999303][ T72] ___sys_sendmsg+0xee/0x170 [ 304.999303][ T72] __sys_sendmsg+0xcd/0x170 [ 304.999303][ T72] do_syscall_64+0xc6/0x1e0 [ 304.999303][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 304.999303][ T72] [ 305.001446][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 305.001446][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.001446][ T72] ipv6_find_idev+0x102/0x170 [ 305.001446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.001446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.001446][ T72] netlink_rcv_skb+0x130/0x360 [ 305.001446][ T72] netlink_unicast+0x449/0x710 [ 305.001446][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.001446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.001446][ T72] ___sys_sendmsg+0xee/0x170 [ 305.001446][ T72] __sys_sendmsg+0xcd/0x170 [ 305.001446][ T72] do_syscall_64+0xc6/0x1e0 [ 305.001446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.001446][ T72] [ 305.003130][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 305.003130][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.003130][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.003130][ T72] ipv6_find_idev+0x102/0x170 [ 305.003130][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.003130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.003130][ T72] netlink_rcv_skb+0x130/0x360 [ 305.003130][ T72] netlink_unicast+0x449/0x710 [ 305.003130][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.003130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.003130][ T72] ___sys_sendmsg+0xee/0x170 [ 305.003130][ T72] __sys_sendmsg+0xcd/0x170 [ 305.003130][ T72] do_syscall_64+0xc6/0x1e0 [ 305.003130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.003130][ T72] [ 305.004971][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 305.005385][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 305.005385][ T72] netdev_get_by_index+0x5e/0x80 [ 305.005385][ T72] fib6_nh_init+0x3d8/0x15b0 [ 305.005385][ T72] ip6_route_info_create+0xf18/0x17d0 [ 305.005385][ T72] addrconf_f6i_alloc+0x244/0x410 [ 305.005385][ T72] ipv6_add_addr+0x411/0x2000 [ 305.005385][ T72] inet6_addr_add+0x30e/0xa40 [ 305.005385][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 305.005385][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.005385][ T72] netlink_rcv_skb+0x130/0x360 [ 305.005385][ T72] netlink_unicast+0x449/0x710 [ 305.005385][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.005385][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.005385][ T72] ___sys_sendmsg+0xee/0x170 [ 305.005385][ T72] __sys_sendmsg+0xcd/0x170 [ 305.005385][ T72] do_syscall_64+0xc6/0x1e0 [ 305.005385][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.005385][ T72] [ 305.007393][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 305.007393][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.007393][ T72] ipv6_find_idev+0x102/0x170 [ 305.007393][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.007393][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.007393][ T72] netlink_rcv_skb+0x130/0x360 [ 305.007393][ T72] netlink_unicast+0x449/0x710 [ 305.007393][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.007393][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.007393][ T72] ___sys_sendmsg+0xee/0x170 [ 305.007393][ T72] __sys_sendmsg+0xcd/0x170 [ 305.007393][ T72] do_syscall_64+0xc6/0x1e0 [ 305.007393][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.007393][ T72] [ 305.009064][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 305.009064][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.009064][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.009064][ T72] ipv6_find_idev+0x102/0x170 [ 305.009064][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.009064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.009064][ T72] netlink_rcv_skb+0x130/0x360 [ 305.009064][ T72] netlink_unicast+0x449/0x710 [ 305.009064][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.009064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.009064][ T72] ___sys_sendmsg+0xee/0x170 [ 305.009064][ T72] __sys_sendmsg+0xcd/0x170 [ 305.009064][ T72] do_syscall_64+0xc6/0x1e0 [ 305.009064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.009064][ T72] [ 305.010943][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 305.011230][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 305.011230][ T72] netdev_get_by_index+0x5e/0x80 [ 305.011230][ T72] fib6_nh_init+0x3d8/0x15b0 [ 305.011230][ T72] ip6_route_info_create+0xf18/0x17d0 [ 305.011230][ T72] addrconf_f6i_alloc+0x244/0x410 [ 305.011230][ T72] ipv6_add_addr+0x411/0x2000 [ 305.011230][ T72] inet6_addr_add+0x30e/0xa40 [ 305.011230][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 305.011230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.011230][ T72] netlink_rcv_skb+0x130/0x360 [ 305.011230][ T72] netlink_unicast+0x449/0x710 [ 305.011230][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.011230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.011230][ T72] ___sys_sendmsg+0xee/0x170 [ 305.011230][ T72] __sys_sendmsg+0xcd/0x170 [ 305.011230][ T72] do_syscall_64+0xc6/0x1e0 [ 305.011230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.011230][ T72] [ 305.013409][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 305.013409][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.013409][ T72] ipv6_find_idev+0x102/0x170 [ 305.013409][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.013409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.013409][ T72] netlink_rcv_skb+0x130/0x360 [ 305.013409][ T72] netlink_unicast+0x449/0x710 [ 305.013409][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.013409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.013409][ T72] ___sys_sendmsg+0xee/0x170 [ 305.013409][ T72] __sys_sendmsg+0xcd/0x170 [ 305.013409][ T72] do_syscall_64+0xc6/0x1e0 [ 305.013409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.013409][ T72] [ 305.015096][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 305.015096][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.015096][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.015096][ T72] ipv6_find_idev+0x102/0x170 [ 305.015096][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.015096][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.015096][ T72] netlink_rcv_skb+0x130/0x360 [ 305.015096][ T72] netlink_unicast+0x449/0x710 [ 305.015096][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.015096][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.015096][ T72] ___sys_sendmsg+0xee/0x170 [ 305.015096][ T72] __sys_sendmsg+0xcd/0x170 [ 305.015096][ T72] do_syscall_64+0xc6/0x1e0 [ 305.015096][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.015096][ T72] [ 305.016932][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 305.017216][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 305.017216][ T72] netdev_get_by_index+0x5e/0x80 [ 305.017216][ T72] fib6_nh_init+0x3d8/0x15b0 [ 305.017216][ T72] ip6_route_info_create+0xf18/0x17d0 [ 305.017216][ T72] addrconf_f6i_alloc+0x244/0x410 [ 305.017216][ T72] ipv6_add_addr+0x411/0x2000 [ 305.017216][ T72] inet6_addr_add+0x30e/0xa40 [ 305.017216][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 305.017216][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.017216][ T72] netlink_rcv_skb+0x130/0x360 [ 305.017216][ T72] netlink_unicast+0x449/0x710 [ 305.017216][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.017216][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.017216][ T72] ___sys_sendmsg+0xee/0x170 [ 305.017216][ T72] __sys_sendmsg+0xcd/0x170 [ 305.017216][ T72] do_syscall_64+0xc6/0x1e0 [ 305.017216][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.017216][ T72] [ 305.019185][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 305.019185][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.019185][ T72] ipv6_find_idev+0x102/0x170 [ 305.019185][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.019185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.019185][ T72] netlink_rcv_skb+0x130/0x360 [ 305.019185][ T72] netlink_unicast+0x449/0x710 [ 305.019185][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.019185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.019185][ T72] ___sys_sendmsg+0xee/0x170 [ 305.019185][ T72] __sys_sendmsg+0xcd/0x170 [ 305.019185][ T72] do_syscall_64+0xc6/0x1e0 [ 305.019185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.019185][ T72] [ 305.020722][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 305.020722][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.020722][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.020722][ T72] ipv6_find_idev+0x102/0x170 [ 305.020722][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.020722][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.020722][ T72] netlink_rcv_skb+0x130/0x360 [ 305.020722][ T72] netlink_unicast+0x449/0x710 [ 305.020722][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.020722][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.020722][ T72] ___sys_sendmsg+0xee/0x170 [ 305.020722][ T72] __sys_sendmsg+0xcd/0x170 [ 305.020722][ T72] do_syscall_64+0xc6/0x1e0 [ 305.020722][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.020722][ T72] [ 305.022799][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 305.023058][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 305.023058][ T72] netdev_get_by_index+0x5e/0x80 [ 305.023058][ T72] fib6_nh_init+0x3d8/0x15b0 [ 305.023058][ T72] ip6_route_info_create+0xf18/0x17d0 [ 305.023058][ T72] addrconf_f6i_alloc+0x244/0x410 [ 305.023058][ T72] ipv6_add_addr+0x411/0x2000 [ 305.023058][ T72] inet6_addr_add+0x30e/0xa40 [ 305.023058][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 305.023058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.023058][ T72] netlink_rcv_skb+0x130/0x360 [ 305.023058][ T72] netlink_unicast+0x449/0x710 [ 305.023058][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.023058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.023058][ T72] ___sys_sendmsg+0xee/0x170 [ 305.023058][ T72] __sys_sendmsg+0xcd/0x170 [ 305.023058][ T72] do_syscall_64+0xc6/0x1e0 [ 305.023058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.023058][ T72] [ 305.025048][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 305.025048][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.025048][ T72] ipv6_find_idev+0x102/0x170 [ 305.025048][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.025048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.025048][ T72] netlink_rcv_skb+0x130/0x360 [ 305.025048][ T72] netlink_unicast+0x449/0x710 [ 305.025048][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.025048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.025048][ T72] ___sys_sendmsg+0xee/0x170 [ 305.025048][ T72] __sys_sendmsg+0xcd/0x170 [ 305.025048][ T72] do_syscall_64+0xc6/0x1e0 [ 305.025048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.025048][ T72] [ 305.026557][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 305.026557][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.026557][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.026557][ T72] ipv6_find_idev+0x102/0x170 [ 305.026557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.026557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.026557][ T72] netlink_rcv_skb+0x130/0x360 [ 305.026557][ T72] netlink_unicast+0x449/0x710 [ 305.026557][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.026557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.026557][ T72] ___sys_sendmsg+0xee/0x170 [ 305.026557][ T72] __sys_sendmsg+0xcd/0x170 [ 305.026557][ T72] do_syscall_64+0xc6/0x1e0 [ 305.026557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.026557][ T72] [ 305.028266][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 305.028526][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 305.028526][ T72] netdev_get_by_index+0x5e/0x80 [ 305.028526][ T72] fib6_nh_init+0x3d8/0x15b0 [ 305.028526][ T72] ip6_route_info_create+0xf18/0x17d0 [ 305.028526][ T72] addrconf_f6i_alloc+0x244/0x410 [ 305.028526][ T72] ipv6_add_addr+0x411/0x2000 [ 305.028526][ T72] inet6_addr_add+0x30e/0xa40 [ 305.028526][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 305.028526][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.028526][ T72] netlink_rcv_skb+0x130/0x360 [ 305.028526][ T72] netlink_unicast+0x449/0x710 [ 305.028526][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.028526][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.028526][ T72] ___sys_sendmsg+0xee/0x170 [ 305.028526][ T72] __sys_sendmsg+0xcd/0x170 [ 305.028526][ T72] do_syscall_64+0xc6/0x1e0 [ 305.028526][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.028526][ T72] [ 305.030642][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 305.030642][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.030642][ T72] ipv6_find_idev+0x102/0x170 [ 305.030642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.030642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.030642][ T72] netlink_rcv_skb+0x130/0x360 [ 305.030642][ T72] netlink_unicast+0x449/0x710 [ 305.030642][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.030642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.030642][ T72] ___sys_sendmsg+0xee/0x170 [ 305.030642][ T72] __sys_sendmsg+0xcd/0x170 [ 305.030642][ T72] do_syscall_64+0xc6/0x1e0 [ 305.030642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.030642][ T72] [ 305.032344][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 305.032344][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.032344][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.032344][ T72] ipv6_find_idev+0x102/0x170 [ 305.032344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.032344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.032344][ T72] netlink_rcv_skb+0x130/0x360 [ 305.032344][ T72] netlink_unicast+0x449/0x710 [ 305.032344][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.032344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.032344][ T72] ___sys_sendmsg+0xee/0x170 [ 305.032344][ T72] __sys_sendmsg+0xcd/0x170 [ 305.032344][ T72] do_syscall_64+0xc6/0x1e0 [ 305.032344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.032344][ T72] [ 305.034218][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 305.034480][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 305.034480][ T72] netdev_get_by_index+0x5e/0x80 [ 305.034480][ T72] fib6_nh_init+0x3d8/0x15b0 [ 305.034480][ T72] ip6_route_info_create+0xf18/0x17d0 [ 305.034480][ T72] addrconf_f6i_alloc+0x244/0x410 [ 305.034480][ T72] ipv6_add_addr+0x411/0x2000 [ 305.034480][ T72] inet6_addr_add+0x30e/0xa40 [ 305.034480][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 305.034480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.034480][ T72] netlink_rcv_skb+0x130/0x360 [ 305.034480][ T72] netlink_unicast+0x449/0x710 [ 305.034480][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.034480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.034480][ T72] ___sys_sendmsg+0xee/0x170 [ 305.034480][ T72] __sys_sendmsg+0xcd/0x170 [ 305.034480][ T72] do_syscall_64+0xc6/0x1e0 [ 305.034480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.034480][ T72] [ 305.036931][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 305.036931][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.036931][ T72] ipv6_find_idev+0x102/0x170 [ 305.036931][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.036931][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.036931][ T72] netlink_rcv_skb+0x130/0x360 [ 305.036931][ T72] netlink_unicast+0x449/0x710 [ 305.036931][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.036931][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.036931][ T72] ___sys_sendmsg+0xee/0x170 [ 305.036931][ T72] __sys_sendmsg+0xcd/0x170 [ 305.036931][ T72] do_syscall_64+0xc6/0x1e0 [ 305.036931][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.036931][ T72] [ 305.038930][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 305.038930][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.038930][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.038930][ T72] ipv6_find_idev+0x102/0x170 [ 305.038930][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.038930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.038930][ T72] netlink_rcv_skb+0x130/0x360 [ 305.038930][ T72] netlink_unicast+0x449/0x710 [ 305.038930][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.038930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.038930][ T72] ___sys_sendmsg+0xee/0x170 [ 305.038930][ T72] __sys_sendmsg+0xcd/0x170 [ 305.038930][ T72] do_syscall_64+0xc6/0x1e0 [ 305.038930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.038930][ T72] [ 305.041370][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 305.041633][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 305.041633][ T72] netdev_get_by_index+0x5e/0x80 [ 305.041633][ T72] fib6_nh_init+0x3d8/0x15b0 [ 305.041633][ T72] ip6_route_info_create+0xf18/0x17d0 [ 305.041633][ T72] addrconf_f6i_alloc+0x244/0x410 [ 305.041633][ T72] ipv6_add_addr+0x411/0x2000 [ 305.041633][ T72] inet6_addr_add+0x30e/0xa40 [ 305.041633][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 305.041633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.041633][ T72] netlink_rcv_skb+0x130/0x360 [ 305.041633][ T72] netlink_unicast+0x449/0x710 [ 305.041633][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.041633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.041633][ T72] ___sys_sendmsg+0xee/0x170 [ 305.041633][ T72] __sys_sendmsg+0xcd/0x170 [ 305.041633][ T72] do_syscall_64+0xc6/0x1e0 [ 305.041633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.041633][ T72] [ 305.043839][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 305.043839][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 305.043839][ T72] ipv6_find_idev+0x102/0x170 [ 305.043839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.043839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.043839][ T72] netlink_rcv_skb+0x130/0x360 [ 305.043839][ T72] netlink_unicast+0x449/0x710 [ 305.043839][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.043839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.043839][ T72] ___sys_sendmsg+0xee/0x170 [ 305.043839][ T72] __sys_sendmsg+0xcd/0x170 [ 305.043839][ T72] do_syscall_64+0xc6/0x1e0 [ 305.043839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.043839][ T72] [ 305.045680][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 305.045680][ T72] neigh_parms_alloc+0x1e5/0x510 [ 305.045680][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 305.045680][ T72] ipv6_find_idev+0x102/0x170 [ 305.045680][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 305.045680][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 305.045680][ T72] netlink_rcv_skb+0x130/0x360 [ 305.045680][ T72] netlink_unicast+0x449/0x710 [ 305.045680][ T72] netlink_sendmsg+0x723/0xbe0 [ 305.045680][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 305.045680][ T72] ___sys_sendmsg+0xee/0x170 [ 305.045680][ T72] __sys_sendmsg+0xcd/0x170 [ 305.045680][ T72] do_syscall_64+0xc6/0x1e0 [ 305.045680][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 305.045680][ T72] [ 315.286837][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 315.287332][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 315.287332][ T72] netdev_get_by_index+0x5e/0x80 [ 315.287332][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.287332][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.287332][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.287332][ T72] ipv6_add_addr+0x411/0x2000 [ 315.287332][ T72] inet6_addr_add+0x30e/0xa40 [ 315.287332][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.287332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.287332][ T72] netlink_rcv_skb+0x130/0x360 [ 315.287332][ T72] netlink_unicast+0x449/0x710 [ 315.287332][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.287332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.287332][ T72] ___sys_sendmsg+0xee/0x170 [ 315.287332][ T72] __sys_sendmsg+0xcd/0x170 [ 315.287332][ T72] do_syscall_64+0xc6/0x1e0 [ 315.287332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.287332][ T72] [ 315.289375][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 315.289375][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.289375][ T72] ipv6_find_idev+0x102/0x170 [ 315.289375][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.289375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.289375][ T72] netlink_rcv_skb+0x130/0x360 [ 315.289375][ T72] netlink_unicast+0x449/0x710 [ 315.289375][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.289375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.289375][ T72] ___sys_sendmsg+0xee/0x170 [ 315.289375][ T72] __sys_sendmsg+0xcd/0x170 [ 315.289375][ T72] do_syscall_64+0xc6/0x1e0 [ 315.289375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.289375][ T72] [ 315.290926][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 315.290926][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.290926][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.290926][ T72] ipv6_find_idev+0x102/0x170 [ 315.290926][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.290926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.290926][ T72] netlink_rcv_skb+0x130/0x360 [ 315.290926][ T72] netlink_unicast+0x449/0x710 [ 315.290926][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.290926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.290926][ T72] ___sys_sendmsg+0xee/0x170 [ 315.290926][ T72] __sys_sendmsg+0xcd/0x170 [ 315.290926][ T72] do_syscall_64+0xc6/0x1e0 [ 315.290926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.290926][ T72] [ 315.292654][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 315.292940][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 315.292940][ T72] netdev_get_by_index+0x5e/0x80 [ 315.292940][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.292940][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.292940][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.292940][ T72] ipv6_add_addr+0x411/0x2000 [ 315.292940][ T72] inet6_addr_add+0x30e/0xa40 [ 315.292940][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.292940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.292940][ T72] netlink_rcv_skb+0x130/0x360 [ 315.292940][ T72] netlink_unicast+0x449/0x710 [ 315.292940][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.292940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.292940][ T72] ___sys_sendmsg+0xee/0x170 [ 315.292940][ T72] __sys_sendmsg+0xcd/0x170 [ 315.292940][ T72] do_syscall_64+0xc6/0x1e0 [ 315.292940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.292940][ T72] [ 315.295032][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 315.295032][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.295032][ T72] ipv6_find_idev+0x102/0x170 [ 315.295032][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.295032][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.295032][ T72] netlink_rcv_skb+0x130/0x360 [ 315.295032][ T72] netlink_unicast+0x449/0x710 [ 315.295032][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.295032][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.295032][ T72] ___sys_sendmsg+0xee/0x170 [ 315.295032][ T72] __sys_sendmsg+0xcd/0x170 [ 315.295032][ T72] do_syscall_64+0xc6/0x1e0 [ 315.295032][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.295032][ T72] [ 315.296735][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 315.296735][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.296735][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.296735][ T72] ipv6_find_idev+0x102/0x170 [ 315.296735][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.296735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.296735][ T72] netlink_rcv_skb+0x130/0x360 [ 315.296735][ T72] netlink_unicast+0x449/0x710 [ 315.296735][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.296735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.296735][ T72] ___sys_sendmsg+0xee/0x170 [ 315.296735][ T72] __sys_sendmsg+0xcd/0x170 [ 315.296735][ T72] do_syscall_64+0xc6/0x1e0 [ 315.296735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.296735][ T72] [ 315.298693][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 315.299013][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 315.299013][ T72] netdev_get_by_index+0x5e/0x80 [ 315.299013][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.299013][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.299013][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.299013][ T72] ipv6_add_addr+0x411/0x2000 [ 315.299013][ T72] inet6_addr_add+0x30e/0xa40 [ 315.299013][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.299013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.299013][ T72] netlink_rcv_skb+0x130/0x360 [ 315.299013][ T72] netlink_unicast+0x449/0x710 [ 315.299013][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.299013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.299013][ T72] ___sys_sendmsg+0xee/0x170 [ 315.299013][ T72] __sys_sendmsg+0xcd/0x170 [ 315.299013][ T72] do_syscall_64+0xc6/0x1e0 [ 315.299013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.299013][ T72] [ 315.301343][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 315.301343][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.301343][ T72] ipv6_find_idev+0x102/0x170 [ 315.301343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.301343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.301343][ T72] netlink_rcv_skb+0x130/0x360 [ 315.301343][ T72] netlink_unicast+0x449/0x710 [ 315.301343][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.301343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.301343][ T72] ___sys_sendmsg+0xee/0x170 [ 315.301343][ T72] __sys_sendmsg+0xcd/0x170 [ 315.301343][ T72] do_syscall_64+0xc6/0x1e0 [ 315.301343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.301343][ T72] [ 315.303100][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 315.303100][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.303100][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.303100][ T72] ipv6_find_idev+0x102/0x170 [ 315.303100][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.303100][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.303100][ T72] netlink_rcv_skb+0x130/0x360 [ 315.303100][ T72] netlink_unicast+0x449/0x710 [ 315.303100][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.303100][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.303100][ T72] ___sys_sendmsg+0xee/0x170 [ 315.303100][ T72] __sys_sendmsg+0xcd/0x170 [ 315.303100][ T72] do_syscall_64+0xc6/0x1e0 [ 315.303100][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.303100][ T72] [ 315.305051][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 315.305367][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 315.305367][ T72] netdev_get_by_index+0x5e/0x80 [ 315.305367][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.305367][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.305367][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.305367][ T72] ipv6_add_addr+0x411/0x2000 [ 315.305367][ T72] inet6_addr_add+0x30e/0xa40 [ 315.305367][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.305367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.305367][ T72] netlink_rcv_skb+0x130/0x360 [ 315.305367][ T72] netlink_unicast+0x449/0x710 [ 315.305367][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.305367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.305367][ T72] ___sys_sendmsg+0xee/0x170 [ 315.305367][ T72] __sys_sendmsg+0xcd/0x170 [ 315.305367][ T72] do_syscall_64+0xc6/0x1e0 [ 315.305367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.305367][ T72] [ 315.307600][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 315.307600][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.307600][ T72] ipv6_find_idev+0x102/0x170 [ 315.307600][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.307600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.307600][ T72] netlink_rcv_skb+0x130/0x360 [ 315.307600][ T72] netlink_unicast+0x449/0x710 [ 315.307600][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.307600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.307600][ T72] ___sys_sendmsg+0xee/0x170 [ 315.307600][ T72] __sys_sendmsg+0xcd/0x170 [ 315.307600][ T72] do_syscall_64+0xc6/0x1e0 [ 315.307600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.307600][ T72] [ 315.309324][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 315.309324][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.309324][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.309324][ T72] ipv6_find_idev+0x102/0x170 [ 315.309324][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.309324][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.309324][ T72] netlink_rcv_skb+0x130/0x360 [ 315.309324][ T72] netlink_unicast+0x449/0x710 [ 315.309324][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.309324][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.309324][ T72] ___sys_sendmsg+0xee/0x170 [ 315.309324][ T72] __sys_sendmsg+0xcd/0x170 [ 315.309324][ T72] do_syscall_64+0xc6/0x1e0 [ 315.309324][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.309324][ T72] [ 315.311651][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 315.312334][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 315.312334][ T72] netdev_get_by_index+0x5e/0x80 [ 315.312334][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.312334][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.312334][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.312334][ T72] ipv6_add_addr+0x411/0x2000 [ 315.312334][ T72] inet6_addr_add+0x30e/0xa40 [ 315.312334][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.312334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.312334][ T72] netlink_rcv_skb+0x130/0x360 [ 315.312334][ T72] netlink_unicast+0x449/0x710 [ 315.312334][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.312334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.312334][ T72] ___sys_sendmsg+0xee/0x170 [ 315.312334][ T72] __sys_sendmsg+0xcd/0x170 [ 315.312334][ T72] do_syscall_64+0xc6/0x1e0 [ 315.312334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.312334][ T72] [ 315.314629][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 315.314629][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.314629][ T72] ipv6_find_idev+0x102/0x170 [ 315.314629][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.314629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.314629][ T72] netlink_rcv_skb+0x130/0x360 [ 315.314629][ T72] netlink_unicast+0x449/0x710 [ 315.314629][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.314629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.314629][ T72] ___sys_sendmsg+0xee/0x170 [ 315.314629][ T72] __sys_sendmsg+0xcd/0x170 [ 315.314629][ T72] do_syscall_64+0xc6/0x1e0 [ 315.314629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.314629][ T72] [ 315.316448][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 315.316448][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.316448][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.316448][ T72] ipv6_find_idev+0x102/0x170 [ 315.316448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.316448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.316448][ T72] netlink_rcv_skb+0x130/0x360 [ 315.316448][ T72] netlink_unicast+0x449/0x710 [ 315.316448][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.316448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.316448][ T72] ___sys_sendmsg+0xee/0x170 [ 315.316448][ T72] __sys_sendmsg+0xcd/0x170 [ 315.316448][ T72] do_syscall_64+0xc6/0x1e0 [ 315.316448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.316448][ T72] [ 315.318359][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 315.318657][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 315.318657][ T72] netdev_get_by_index+0x5e/0x80 [ 315.318657][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.318657][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.318657][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.318657][ T72] ipv6_add_addr+0x411/0x2000 [ 315.318657][ T72] inet6_addr_add+0x30e/0xa40 [ 315.318657][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.318657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.318657][ T72] netlink_rcv_skb+0x130/0x360 [ 315.318657][ T72] netlink_unicast+0x449/0x710 [ 315.318657][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.318657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.318657][ T72] ___sys_sendmsg+0xee/0x170 [ 315.318657][ T72] __sys_sendmsg+0xcd/0x170 [ 315.318657][ T72] do_syscall_64+0xc6/0x1e0 [ 315.318657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.318657][ T72] [ 315.320994][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 315.320994][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.320994][ T72] ipv6_find_idev+0x102/0x170 [ 315.320994][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.320994][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.320994][ T72] netlink_rcv_skb+0x130/0x360 [ 315.320994][ T72] netlink_unicast+0x449/0x710 [ 315.320994][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.320994][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.320994][ T72] ___sys_sendmsg+0xee/0x170 [ 315.320994][ T72] __sys_sendmsg+0xcd/0x170 [ 315.320994][ T72] do_syscall_64+0xc6/0x1e0 [ 315.320994][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.320994][ T72] [ 315.322770][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 315.322770][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.322770][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.322770][ T72] ipv6_find_idev+0x102/0x170 [ 315.322770][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.322770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.322770][ T72] netlink_rcv_skb+0x130/0x360 [ 315.322770][ T72] netlink_unicast+0x449/0x710 [ 315.322770][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.322770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.322770][ T72] ___sys_sendmsg+0xee/0x170 [ 315.322770][ T72] __sys_sendmsg+0xcd/0x170 [ 315.322770][ T72] do_syscall_64+0xc6/0x1e0 [ 315.322770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.322770][ T72] [ 315.324920][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 315.325221][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 315.325221][ T72] netdev_get_by_index+0x5e/0x80 [ 315.325221][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.325221][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.325221][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.325221][ T72] ipv6_add_addr+0x411/0x2000 [ 315.325221][ T72] inet6_addr_add+0x30e/0xa40 [ 315.325221][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.325221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.325221][ T72] netlink_rcv_skb+0x130/0x360 [ 315.325221][ T72] netlink_unicast+0x449/0x710 [ 315.325221][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.325221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.325221][ T72] ___sys_sendmsg+0xee/0x170 [ 315.325221][ T72] __sys_sendmsg+0xcd/0x170 [ 315.325221][ T72] do_syscall_64+0xc6/0x1e0 [ 315.325221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.325221][ T72] [ 315.327565][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 315.327565][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.327565][ T72] ipv6_find_idev+0x102/0x170 [ 315.327565][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.327565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.327565][ T72] netlink_rcv_skb+0x130/0x360 [ 315.327565][ T72] netlink_unicast+0x449/0x710 [ 315.327565][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.327565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.327565][ T72] ___sys_sendmsg+0xee/0x170 [ 315.327565][ T72] __sys_sendmsg+0xcd/0x170 [ 315.327565][ T72] do_syscall_64+0xc6/0x1e0 [ 315.327565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.327565][ T72] [ 315.329398][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 315.329398][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.329398][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.329398][ T72] ipv6_find_idev+0x102/0x170 [ 315.329398][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.329398][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.329398][ T72] netlink_rcv_skb+0x130/0x360 [ 315.329398][ T72] netlink_unicast+0x449/0x710 [ 315.329398][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.329398][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.329398][ T72] ___sys_sendmsg+0xee/0x170 [ 315.329398][ T72] __sys_sendmsg+0xcd/0x170 [ 315.329398][ T72] do_syscall_64+0xc6/0x1e0 [ 315.329398][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.329398][ T72] [ 315.331403][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 315.331705][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 315.331705][ T72] netdev_get_by_index+0x5e/0x80 [ 315.331705][ T72] fib6_nh_init+0x3d8/0x15b0 [ 315.331705][ T72] ip6_route_info_create+0xf18/0x17d0 [ 315.331705][ T72] addrconf_f6i_alloc+0x244/0x410 [ 315.331705][ T72] ipv6_add_addr+0x411/0x2000 [ 315.331705][ T72] inet6_addr_add+0x30e/0xa40 [ 315.331705][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 315.331705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.331705][ T72] netlink_rcv_skb+0x130/0x360 [ 315.331705][ T72] netlink_unicast+0x449/0x710 [ 315.331705][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.331705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.331705][ T72] ___sys_sendmsg+0xee/0x170 [ 315.331705][ T72] __sys_sendmsg+0xcd/0x170 [ 315.331705][ T72] do_syscall_64+0xc6/0x1e0 [ 315.331705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.331705][ T72] [ 315.334177][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 315.334177][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 315.334177][ T72] ipv6_find_idev+0x102/0x170 [ 315.334177][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.334177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.334177][ T72] netlink_rcv_skb+0x130/0x360 [ 315.334177][ T72] netlink_unicast+0x449/0x710 [ 315.334177][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.334177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.334177][ T72] ___sys_sendmsg+0xee/0x170 [ 315.334177][ T72] __sys_sendmsg+0xcd/0x170 [ 315.334177][ T72] do_syscall_64+0xc6/0x1e0 [ 315.334177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.334177][ T72] [ 315.336120][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 315.336120][ T72] neigh_parms_alloc+0x1e5/0x510 [ 315.336120][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 315.336120][ T72] ipv6_find_idev+0x102/0x170 [ 315.336120][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 315.336120][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 315.336120][ T72] netlink_rcv_skb+0x130/0x360 [ 315.336120][ T72] netlink_unicast+0x449/0x710 [ 315.336120][ T72] netlink_sendmsg+0x723/0xbe0 [ 315.336120][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 315.336120][ T72] ___sys_sendmsg+0xee/0x170 [ 315.336120][ T72] __sys_sendmsg+0xcd/0x170 [ 315.336120][ T72] do_syscall_64+0xc6/0x1e0 [ 315.336120][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 315.336120][ T72] [ 325.574828][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 325.575286][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 325.575286][ T72] netdev_get_by_index+0x5e/0x80 [ 325.575286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.575286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.575286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.575286][ T72] ipv6_add_addr+0x411/0x2000 [ 325.575286][ T72] inet6_addr_add+0x30e/0xa40 [ 325.575286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.575286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.575286][ T72] netlink_rcv_skb+0x130/0x360 [ 325.575286][ T72] netlink_unicast+0x449/0x710 [ 325.575286][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.575286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.575286][ T72] ___sys_sendmsg+0xee/0x170 [ 325.575286][ T72] __sys_sendmsg+0xcd/0x170 [ 325.575286][ T72] do_syscall_64+0xc6/0x1e0 [ 325.575286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.575286][ T72] [ 325.577774][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 325.577774][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.577774][ T72] ipv6_find_idev+0x102/0x170 [ 325.577774][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.577774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.577774][ T72] netlink_rcv_skb+0x130/0x360 [ 325.577774][ T72] netlink_unicast+0x449/0x710 [ 325.577774][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.577774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.577774][ T72] ___sys_sendmsg+0xee/0x170 [ 325.577774][ T72] __sys_sendmsg+0xcd/0x170 [ 325.577774][ T72] do_syscall_64+0xc6/0x1e0 [ 325.577774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.577774][ T72] [ 325.579686][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 325.579686][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.579686][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.579686][ T72] ipv6_find_idev+0x102/0x170 [ 325.579686][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.579686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.579686][ T72] netlink_rcv_skb+0x130/0x360 [ 325.579686][ T72] netlink_unicast+0x449/0x710 [ 325.579686][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.579686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.579686][ T72] ___sys_sendmsg+0xee/0x170 [ 325.579686][ T72] __sys_sendmsg+0xcd/0x170 [ 325.579686][ T72] do_syscall_64+0xc6/0x1e0 [ 325.579686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.579686][ T72] [ 325.581766][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 325.582094][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 325.582094][ T72] netdev_get_by_index+0x5e/0x80 [ 325.582094][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.582094][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.582094][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.582094][ T72] ipv6_add_addr+0x411/0x2000 [ 325.582094][ T72] inet6_addr_add+0x30e/0xa40 [ 325.582094][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.582094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.582094][ T72] netlink_rcv_skb+0x130/0x360 [ 325.582094][ T72] netlink_unicast+0x449/0x710 [ 325.582094][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.582094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.582094][ T72] ___sys_sendmsg+0xee/0x170 [ 325.582094][ T72] __sys_sendmsg+0xcd/0x170 [ 325.582094][ T72] do_syscall_64+0xc6/0x1e0 [ 325.582094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.582094][ T72] [ 325.584557][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 325.584557][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.584557][ T72] ipv6_find_idev+0x102/0x170 [ 325.584557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.584557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.584557][ T72] netlink_rcv_skb+0x130/0x360 [ 325.584557][ T72] netlink_unicast+0x449/0x710 [ 325.584557][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.584557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.584557][ T72] ___sys_sendmsg+0xee/0x170 [ 325.584557][ T72] __sys_sendmsg+0xcd/0x170 [ 325.584557][ T72] do_syscall_64+0xc6/0x1e0 [ 325.584557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.584557][ T72] [ 325.586456][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 325.586456][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.586456][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.586456][ T72] ipv6_find_idev+0x102/0x170 [ 325.586456][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.586456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.586456][ T72] netlink_rcv_skb+0x130/0x360 [ 325.586456][ T72] netlink_unicast+0x449/0x710 [ 325.586456][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.586456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.586456][ T72] ___sys_sendmsg+0xee/0x170 [ 325.586456][ T72] __sys_sendmsg+0xcd/0x170 [ 325.586456][ T72] do_syscall_64+0xc6/0x1e0 [ 325.586456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.586456][ T72] [ 325.588526][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 325.588861][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 325.588861][ T72] netdev_get_by_index+0x5e/0x80 [ 325.588861][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.588861][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.588861][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.588861][ T72] ipv6_add_addr+0x411/0x2000 [ 325.588861][ T72] inet6_addr_add+0x30e/0xa40 [ 325.588861][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.588861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.588861][ T72] netlink_rcv_skb+0x130/0x360 [ 325.588861][ T72] netlink_unicast+0x449/0x710 [ 325.588861][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.588861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.588861][ T72] ___sys_sendmsg+0xee/0x170 [ 325.588861][ T72] __sys_sendmsg+0xcd/0x170 [ 325.588861][ T72] do_syscall_64+0xc6/0x1e0 [ 325.588861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.588861][ T72] [ 325.591326][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 325.591326][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.591326][ T72] ipv6_find_idev+0x102/0x170 [ 325.591326][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.591326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.591326][ T72] netlink_rcv_skb+0x130/0x360 [ 325.591326][ T72] netlink_unicast+0x449/0x710 [ 325.591326][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.591326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.591326][ T72] ___sys_sendmsg+0xee/0x170 [ 325.591326][ T72] __sys_sendmsg+0xcd/0x170 [ 325.591326][ T72] do_syscall_64+0xc6/0x1e0 [ 325.591326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.591326][ T72] [ 325.593220][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 325.593220][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.593220][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.593220][ T72] ipv6_find_idev+0x102/0x170 [ 325.593220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.593220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.593220][ T72] netlink_rcv_skb+0x130/0x360 [ 325.593220][ T72] netlink_unicast+0x449/0x710 [ 325.593220][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.593220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.593220][ T72] ___sys_sendmsg+0xee/0x170 [ 325.593220][ T72] __sys_sendmsg+0xcd/0x170 [ 325.593220][ T72] do_syscall_64+0xc6/0x1e0 [ 325.593220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.593220][ T72] [ 325.595282][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 325.595605][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 325.595605][ T72] netdev_get_by_index+0x5e/0x80 [ 325.595605][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.595605][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.595605][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.595605][ T72] ipv6_add_addr+0x411/0x2000 [ 325.595605][ T72] inet6_addr_add+0x30e/0xa40 [ 325.595605][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.595605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.595605][ T72] netlink_rcv_skb+0x130/0x360 [ 325.595605][ T72] netlink_unicast+0x449/0x710 [ 325.595605][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.595605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.595605][ T72] ___sys_sendmsg+0xee/0x170 [ 325.595605][ T72] __sys_sendmsg+0xcd/0x170 [ 325.595605][ T72] do_syscall_64+0xc6/0x1e0 [ 325.595605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.595605][ T72] [ 325.598049][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 325.598049][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.598049][ T72] ipv6_find_idev+0x102/0x170 [ 325.598049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.598049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.598049][ T72] netlink_rcv_skb+0x130/0x360 [ 325.598049][ T72] netlink_unicast+0x449/0x710 [ 325.598049][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.598049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.598049][ T72] ___sys_sendmsg+0xee/0x170 [ 325.598049][ T72] __sys_sendmsg+0xcd/0x170 [ 325.598049][ T72] do_syscall_64+0xc6/0x1e0 [ 325.598049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.598049][ T72] [ 325.599947][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 325.599947][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.599947][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.599947][ T72] ipv6_find_idev+0x102/0x170 [ 325.599947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.599947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.599947][ T72] netlink_rcv_skb+0x130/0x360 [ 325.599947][ T72] netlink_unicast+0x449/0x710 [ 325.599947][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.599947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.599947][ T72] ___sys_sendmsg+0xee/0x170 [ 325.599947][ T72] __sys_sendmsg+0xcd/0x170 [ 325.599947][ T72] do_syscall_64+0xc6/0x1e0 [ 325.599947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.599947][ T72] [ 325.602409][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 325.602731][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 325.602731][ T72] netdev_get_by_index+0x5e/0x80 [ 325.602731][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.602731][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.602731][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.602731][ T72] ipv6_add_addr+0x411/0x2000 [ 325.602731][ T72] inet6_addr_add+0x30e/0xa40 [ 325.602731][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.602731][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.602731][ T72] netlink_rcv_skb+0x130/0x360 [ 325.602731][ T72] netlink_unicast+0x449/0x710 [ 325.602731][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.602731][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.602731][ T72] ___sys_sendmsg+0xee/0x170 [ 325.602731][ T72] __sys_sendmsg+0xcd/0x170 [ 325.602731][ T72] do_syscall_64+0xc6/0x1e0 [ 325.602731][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.602731][ T72] [ 325.605180][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 325.605180][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.605180][ T72] ipv6_find_idev+0x102/0x170 [ 325.605180][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.605180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.605180][ T72] netlink_rcv_skb+0x130/0x360 [ 325.605180][ T72] netlink_unicast+0x449/0x710 [ 325.605180][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.605180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.605180][ T72] ___sys_sendmsg+0xee/0x170 [ 325.605180][ T72] __sys_sendmsg+0xcd/0x170 [ 325.605180][ T72] do_syscall_64+0xc6/0x1e0 [ 325.605180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.605180][ T72] [ 325.607069][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 325.607069][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.607069][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.607069][ T72] ipv6_find_idev+0x102/0x170 [ 325.607069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.607069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.607069][ T72] netlink_rcv_skb+0x130/0x360 [ 325.607069][ T72] netlink_unicast+0x449/0x710 [ 325.607069][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.607069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.607069][ T72] ___sys_sendmsg+0xee/0x170 [ 325.607069][ T72] __sys_sendmsg+0xcd/0x170 [ 325.607069][ T72] do_syscall_64+0xc6/0x1e0 [ 325.607069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.607069][ T72] [ 325.609179][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 325.609506][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 325.609506][ T72] netdev_get_by_index+0x5e/0x80 [ 325.609506][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.609506][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.609506][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.609506][ T72] ipv6_add_addr+0x411/0x2000 [ 325.609506][ T72] inet6_addr_add+0x30e/0xa40 [ 325.609506][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.609506][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.609506][ T72] netlink_rcv_skb+0x130/0x360 [ 325.609506][ T72] netlink_unicast+0x449/0x710 [ 325.609506][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.609506][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.609506][ T72] ___sys_sendmsg+0xee/0x170 [ 325.609506][ T72] __sys_sendmsg+0xcd/0x170 [ 325.609506][ T72] do_syscall_64+0xc6/0x1e0 [ 325.609506][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.609506][ T72] [ 325.612109][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 325.612109][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.612109][ T72] ipv6_find_idev+0x102/0x170 [ 325.612109][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.612109][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.612109][ T72] netlink_rcv_skb+0x130/0x360 [ 325.612109][ T72] netlink_unicast+0x449/0x710 [ 325.612109][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.612109][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.612109][ T72] ___sys_sendmsg+0xee/0x170 [ 325.612109][ T72] __sys_sendmsg+0xcd/0x170 [ 325.612109][ T72] do_syscall_64+0xc6/0x1e0 [ 325.612109][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.612109][ T72] [ 325.614250][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 325.614250][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.614250][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.614250][ T72] ipv6_find_idev+0x102/0x170 [ 325.614250][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.614250][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.614250][ T72] netlink_rcv_skb+0x130/0x360 [ 325.614250][ T72] netlink_unicast+0x449/0x710 [ 325.614250][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.614250][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.614250][ T72] ___sys_sendmsg+0xee/0x170 [ 325.614250][ T72] __sys_sendmsg+0xcd/0x170 [ 325.614250][ T72] do_syscall_64+0xc6/0x1e0 [ 325.614250][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.614250][ T72] [ 325.616540][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 325.616927][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 325.616927][ T72] netdev_get_by_index+0x5e/0x80 [ 325.616927][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.616927][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.616927][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.616927][ T72] ipv6_add_addr+0x411/0x2000 [ 325.616927][ T72] inet6_addr_add+0x30e/0xa40 [ 325.616927][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.616927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.616927][ T72] netlink_rcv_skb+0x130/0x360 [ 325.616927][ T72] netlink_unicast+0x449/0x710 [ 325.616927][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.616927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.616927][ T72] ___sys_sendmsg+0xee/0x170 [ 325.616927][ T72] __sys_sendmsg+0xcd/0x170 [ 325.616927][ T72] do_syscall_64+0xc6/0x1e0 [ 325.616927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.616927][ T72] [ 325.619570][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 325.619570][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.619570][ T72] ipv6_find_idev+0x102/0x170 [ 325.619570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.619570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.619570][ T72] netlink_rcv_skb+0x130/0x360 [ 325.619570][ T72] netlink_unicast+0x449/0x710 [ 325.619570][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.619570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.619570][ T72] ___sys_sendmsg+0xee/0x170 [ 325.619570][ T72] __sys_sendmsg+0xcd/0x170 [ 325.619570][ T72] do_syscall_64+0xc6/0x1e0 [ 325.619570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.619570][ T72] [ 325.621643][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 325.621643][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.621643][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.621643][ T72] ipv6_find_idev+0x102/0x170 [ 325.621643][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.621643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.621643][ T72] netlink_rcv_skb+0x130/0x360 [ 325.621643][ T72] netlink_unicast+0x449/0x710 [ 325.621643][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.621643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.621643][ T72] ___sys_sendmsg+0xee/0x170 [ 325.621643][ T72] __sys_sendmsg+0xcd/0x170 [ 325.621643][ T72] do_syscall_64+0xc6/0x1e0 [ 325.621643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.621643][ T72] [ 325.623931][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 325.624247][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 325.624247][ T72] netdev_get_by_index+0x5e/0x80 [ 325.624247][ T72] fib6_nh_init+0x3d8/0x15b0 [ 325.624247][ T72] ip6_route_info_create+0xf18/0x17d0 [ 325.624247][ T72] addrconf_f6i_alloc+0x244/0x410 [ 325.624247][ T72] ipv6_add_addr+0x411/0x2000 [ 325.624247][ T72] inet6_addr_add+0x30e/0xa40 [ 325.624247][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 325.624247][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.624247][ T72] netlink_rcv_skb+0x130/0x360 [ 325.624247][ T72] netlink_unicast+0x449/0x710 [ 325.624247][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.624247][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.624247][ T72] ___sys_sendmsg+0xee/0x170 [ 325.624247][ T72] __sys_sendmsg+0xcd/0x170 [ 325.624247][ T72] do_syscall_64+0xc6/0x1e0 [ 325.624247][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.624247][ T72] [ 325.627007][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 325.627007][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 325.627007][ T72] ipv6_find_idev+0x102/0x170 [ 325.627007][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.627007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.627007][ T72] netlink_rcv_skb+0x130/0x360 [ 325.627007][ T72] netlink_unicast+0x449/0x710 [ 325.627007][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.627007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.627007][ T72] ___sys_sendmsg+0xee/0x170 [ 325.627007][ T72] __sys_sendmsg+0xcd/0x170 [ 325.627007][ T72] do_syscall_64+0xc6/0x1e0 [ 325.627007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.627007][ T72] [ 325.629079][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 325.629079][ T72] neigh_parms_alloc+0x1e5/0x510 [ 325.629079][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 325.629079][ T72] ipv6_find_idev+0x102/0x170 [ 325.629079][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 325.629079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 325.629079][ T72] netlink_rcv_skb+0x130/0x360 [ 325.629079][ T72] netlink_unicast+0x449/0x710 [ 325.629079][ T72] netlink_sendmsg+0x723/0xbe0 [ 325.629079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 325.629079][ T72] ___sys_sendmsg+0xee/0x170 [ 325.629079][ T72] __sys_sendmsg+0xcd/0x170 [ 325.629079][ T72] do_syscall_64+0xc6/0x1e0 [ 325.629079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 325.629079][ T72] [ 335.870825][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 335.871242][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 335.871242][ T72] netdev_get_by_index+0x5e/0x80 [ 335.871242][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.871242][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.871242][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.871242][ T72] ipv6_add_addr+0x411/0x2000 [ 335.871242][ T72] inet6_addr_add+0x30e/0xa40 [ 335.871242][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.871242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.871242][ T72] netlink_rcv_skb+0x130/0x360 [ 335.871242][ T72] netlink_unicast+0x449/0x710 [ 335.871242][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.871242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.871242][ T72] ___sys_sendmsg+0xee/0x170 [ 335.871242][ T72] __sys_sendmsg+0xcd/0x170 [ 335.871242][ T72] do_syscall_64+0xc6/0x1e0 [ 335.871242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.871242][ T72] [ 335.873320][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 335.873320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.873320][ T72] ipv6_find_idev+0x102/0x170 [ 335.873320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.873320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.873320][ T72] netlink_rcv_skb+0x130/0x360 [ 335.873320][ T72] netlink_unicast+0x449/0x710 [ 335.873320][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.873320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.873320][ T72] ___sys_sendmsg+0xee/0x170 [ 335.873320][ T72] __sys_sendmsg+0xcd/0x170 [ 335.873320][ T72] do_syscall_64+0xc6/0x1e0 [ 335.873320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.873320][ T72] [ 335.874878][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 335.874878][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.874878][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.874878][ T72] ipv6_find_idev+0x102/0x170 [ 335.874878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.874878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.874878][ T72] netlink_rcv_skb+0x130/0x360 [ 335.874878][ T72] netlink_unicast+0x449/0x710 [ 335.874878][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.874878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.874878][ T72] ___sys_sendmsg+0xee/0x170 [ 335.874878][ T72] __sys_sendmsg+0xcd/0x170 [ 335.874878][ T72] do_syscall_64+0xc6/0x1e0 [ 335.874878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.874878][ T72] [ 335.876589][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 335.876875][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 335.876875][ T72] netdev_get_by_index+0x5e/0x80 [ 335.876875][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.876875][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.876875][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.876875][ T72] ipv6_add_addr+0x411/0x2000 [ 335.876875][ T72] inet6_addr_add+0x30e/0xa40 [ 335.876875][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.876875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.876875][ T72] netlink_rcv_skb+0x130/0x360 [ 335.876875][ T72] netlink_unicast+0x449/0x710 [ 335.876875][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.876875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.876875][ T72] ___sys_sendmsg+0xee/0x170 [ 335.876875][ T72] __sys_sendmsg+0xcd/0x170 [ 335.876875][ T72] do_syscall_64+0xc6/0x1e0 [ 335.876875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.876875][ T72] [ 335.878880][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 335.878880][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.878880][ T72] ipv6_find_idev+0x102/0x170 [ 335.878880][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.878880][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.878880][ T72] netlink_rcv_skb+0x130/0x360 [ 335.878880][ T72] netlink_unicast+0x449/0x710 [ 335.878880][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.878880][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.878880][ T72] ___sys_sendmsg+0xee/0x170 [ 335.878880][ T72] __sys_sendmsg+0xcd/0x170 [ 335.878880][ T72] do_syscall_64+0xc6/0x1e0 [ 335.878880][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.878880][ T72] [ 335.880427][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 335.880427][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.880427][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.880427][ T72] ipv6_find_idev+0x102/0x170 [ 335.880427][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.880427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.880427][ T72] netlink_rcv_skb+0x130/0x360 [ 335.880427][ T72] netlink_unicast+0x449/0x710 [ 335.880427][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.880427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.880427][ T72] ___sys_sendmsg+0xee/0x170 [ 335.880427][ T72] __sys_sendmsg+0xcd/0x170 [ 335.880427][ T72] do_syscall_64+0xc6/0x1e0 [ 335.880427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.880427][ T72] [ 335.882132][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 335.882407][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 335.882407][ T72] netdev_get_by_index+0x5e/0x80 [ 335.882407][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.882407][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.882407][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.882407][ T72] ipv6_add_addr+0x411/0x2000 [ 335.882407][ T72] inet6_addr_add+0x30e/0xa40 [ 335.882407][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.882407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.882407][ T72] netlink_rcv_skb+0x130/0x360 [ 335.882407][ T72] netlink_unicast+0x449/0x710 [ 335.882407][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.882407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.882407][ T72] ___sys_sendmsg+0xee/0x170 [ 335.882407][ T72] __sys_sendmsg+0xcd/0x170 [ 335.882407][ T72] do_syscall_64+0xc6/0x1e0 [ 335.882407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.882407][ T72] [ 335.884428][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 335.884428][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.884428][ T72] ipv6_find_idev+0x102/0x170 [ 335.884428][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.884428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.884428][ T72] netlink_rcv_skb+0x130/0x360 [ 335.884428][ T72] netlink_unicast+0x449/0x710 [ 335.884428][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.884428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.884428][ T72] ___sys_sendmsg+0xee/0x170 [ 335.884428][ T72] __sys_sendmsg+0xcd/0x170 [ 335.884428][ T72] do_syscall_64+0xc6/0x1e0 [ 335.884428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.884428][ T72] [ 335.885986][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 335.885986][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.885986][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.885986][ T72] ipv6_find_idev+0x102/0x170 [ 335.885986][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.885986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.885986][ T72] netlink_rcv_skb+0x130/0x360 [ 335.885986][ T72] netlink_unicast+0x449/0x710 [ 335.885986][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.885986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.885986][ T72] ___sys_sendmsg+0xee/0x170 [ 335.885986][ T72] __sys_sendmsg+0xcd/0x170 [ 335.885986][ T72] do_syscall_64+0xc6/0x1e0 [ 335.885986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.885986][ T72] [ 335.887697][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 335.888426][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 335.888426][ T72] netdev_get_by_index+0x5e/0x80 [ 335.888426][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.888426][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.888426][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.888426][ T72] ipv6_add_addr+0x411/0x2000 [ 335.888426][ T72] inet6_addr_add+0x30e/0xa40 [ 335.888426][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.888426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.888426][ T72] netlink_rcv_skb+0x130/0x360 [ 335.888426][ T72] netlink_unicast+0x449/0x710 [ 335.888426][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.888426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.888426][ T72] ___sys_sendmsg+0xee/0x170 [ 335.888426][ T72] __sys_sendmsg+0xcd/0x170 [ 335.888426][ T72] do_syscall_64+0xc6/0x1e0 [ 335.888426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.888426][ T72] [ 335.890462][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 335.890462][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.890462][ T72] ipv6_find_idev+0x102/0x170 [ 335.890462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.890462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.890462][ T72] netlink_rcv_skb+0x130/0x360 [ 335.890462][ T72] netlink_unicast+0x449/0x710 [ 335.890462][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.890462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.890462][ T72] ___sys_sendmsg+0xee/0x170 [ 335.890462][ T72] __sys_sendmsg+0xcd/0x170 [ 335.890462][ T72] do_syscall_64+0xc6/0x1e0 [ 335.890462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.890462][ T72] [ 335.891996][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 335.891996][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.891996][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.891996][ T72] ipv6_find_idev+0x102/0x170 [ 335.891996][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.891996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.891996][ T72] netlink_rcv_skb+0x130/0x360 [ 335.891996][ T72] netlink_unicast+0x449/0x710 [ 335.891996][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.891996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.891996][ T72] ___sys_sendmsg+0xee/0x170 [ 335.891996][ T72] __sys_sendmsg+0xcd/0x170 [ 335.891996][ T72] do_syscall_64+0xc6/0x1e0 [ 335.891996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.891996][ T72] [ 335.893716][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 335.894041][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 335.894041][ T72] netdev_get_by_index+0x5e/0x80 [ 335.894041][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.894041][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.894041][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.894041][ T72] ipv6_add_addr+0x411/0x2000 [ 335.894041][ T72] inet6_addr_add+0x30e/0xa40 [ 335.894041][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.894041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.894041][ T72] netlink_rcv_skb+0x130/0x360 [ 335.894041][ T72] netlink_unicast+0x449/0x710 [ 335.894041][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.894041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.894041][ T72] ___sys_sendmsg+0xee/0x170 [ 335.894041][ T72] __sys_sendmsg+0xcd/0x170 [ 335.894041][ T72] do_syscall_64+0xc6/0x1e0 [ 335.894041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.894041][ T72] [ 335.896049][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 335.896049][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.896049][ T72] ipv6_find_idev+0x102/0x170 [ 335.896049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.896049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.896049][ T72] netlink_rcv_skb+0x130/0x360 [ 335.896049][ T72] netlink_unicast+0x449/0x710 [ 335.896049][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.896049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.896049][ T72] ___sys_sendmsg+0xee/0x170 [ 335.896049][ T72] __sys_sendmsg+0xcd/0x170 [ 335.896049][ T72] do_syscall_64+0xc6/0x1e0 [ 335.896049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.896049][ T72] [ 335.897597][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 335.897597][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.897597][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.897597][ T72] ipv6_find_idev+0x102/0x170 [ 335.897597][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.897597][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.897597][ T72] netlink_rcv_skb+0x130/0x360 [ 335.897597][ T72] netlink_unicast+0x449/0x710 [ 335.897597][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.897597][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.897597][ T72] ___sys_sendmsg+0xee/0x170 [ 335.897597][ T72] __sys_sendmsg+0xcd/0x170 [ 335.897597][ T72] do_syscall_64+0xc6/0x1e0 [ 335.897597][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.897597][ T72] [ 335.899318][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 335.899598][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 335.899598][ T72] netdev_get_by_index+0x5e/0x80 [ 335.899598][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.899598][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.899598][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.899598][ T72] ipv6_add_addr+0x411/0x2000 [ 335.899598][ T72] inet6_addr_add+0x30e/0xa40 [ 335.899598][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.899598][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.899598][ T72] netlink_rcv_skb+0x130/0x360 [ 335.899598][ T72] netlink_unicast+0x449/0x710 [ 335.899598][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.899598][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.899598][ T72] ___sys_sendmsg+0xee/0x170 [ 335.899598][ T72] __sys_sendmsg+0xcd/0x170 [ 335.899598][ T72] do_syscall_64+0xc6/0x1e0 [ 335.899598][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.899598][ T72] [ 335.901655][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 335.901655][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.901655][ T72] ipv6_find_idev+0x102/0x170 [ 335.901655][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.901655][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.901655][ T72] netlink_rcv_skb+0x130/0x360 [ 335.901655][ T72] netlink_unicast+0x449/0x710 [ 335.901655][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.901655][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.901655][ T72] ___sys_sendmsg+0xee/0x170 [ 335.901655][ T72] __sys_sendmsg+0xcd/0x170 [ 335.901655][ T72] do_syscall_64+0xc6/0x1e0 [ 335.901655][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.901655][ T72] [ 335.903426][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 335.903426][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.903426][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.903426][ T72] ipv6_find_idev+0x102/0x170 [ 335.903426][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.903426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.903426][ T72] netlink_rcv_skb+0x130/0x360 [ 335.903426][ T72] netlink_unicast+0x449/0x710 [ 335.903426][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.903426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.903426][ T72] ___sys_sendmsg+0xee/0x170 [ 335.903426][ T72] __sys_sendmsg+0xcd/0x170 [ 335.903426][ T72] do_syscall_64+0xc6/0x1e0 [ 335.903426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.903426][ T72] [ 335.905333][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 335.905596][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 335.905596][ T72] netdev_get_by_index+0x5e/0x80 [ 335.905596][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.905596][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.905596][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.905596][ T72] ipv6_add_addr+0x411/0x2000 [ 335.905596][ T72] inet6_addr_add+0x30e/0xa40 [ 335.905596][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.905596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.905596][ T72] netlink_rcv_skb+0x130/0x360 [ 335.905596][ T72] netlink_unicast+0x449/0x710 [ 335.905596][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.905596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.905596][ T72] ___sys_sendmsg+0xee/0x170 [ 335.905596][ T72] __sys_sendmsg+0xcd/0x170 [ 335.905596][ T72] do_syscall_64+0xc6/0x1e0 [ 335.905596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.905596][ T72] [ 335.907843][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 335.907843][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.907843][ T72] ipv6_find_idev+0x102/0x170 [ 335.907843][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.907843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.907843][ T72] netlink_rcv_skb+0x130/0x360 [ 335.907843][ T72] netlink_unicast+0x449/0x710 [ 335.907843][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.907843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.907843][ T72] ___sys_sendmsg+0xee/0x170 [ 335.907843][ T72] __sys_sendmsg+0xcd/0x170 [ 335.907843][ T72] do_syscall_64+0xc6/0x1e0 [ 335.907843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.907843][ T72] [ 335.909581][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 335.909581][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.909581][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.909581][ T72] ipv6_find_idev+0x102/0x170 [ 335.909581][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.909581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.909581][ T72] netlink_rcv_skb+0x130/0x360 [ 335.909581][ T72] netlink_unicast+0x449/0x710 [ 335.909581][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.909581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.909581][ T72] ___sys_sendmsg+0xee/0x170 [ 335.909581][ T72] __sys_sendmsg+0xcd/0x170 [ 335.909581][ T72] do_syscall_64+0xc6/0x1e0 [ 335.909581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.909581][ T72] [ 335.911499][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 335.911831][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 335.911831][ T72] netdev_get_by_index+0x5e/0x80 [ 335.911831][ T72] fib6_nh_init+0x3d8/0x15b0 [ 335.911831][ T72] ip6_route_info_create+0xf18/0x17d0 [ 335.911831][ T72] addrconf_f6i_alloc+0x244/0x410 [ 335.911831][ T72] ipv6_add_addr+0x411/0x2000 [ 335.911831][ T72] inet6_addr_add+0x30e/0xa40 [ 335.911831][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 335.911831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.911831][ T72] netlink_rcv_skb+0x130/0x360 [ 335.911831][ T72] netlink_unicast+0x449/0x710 [ 335.911831][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.911831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.911831][ T72] ___sys_sendmsg+0xee/0x170 [ 335.911831][ T72] __sys_sendmsg+0xcd/0x170 [ 335.911831][ T72] do_syscall_64+0xc6/0x1e0 [ 335.911831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.911831][ T72] [ 335.914092][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 335.914092][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 335.914092][ T72] ipv6_find_idev+0x102/0x170 [ 335.914092][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.914092][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.914092][ T72] netlink_rcv_skb+0x130/0x360 [ 335.914092][ T72] netlink_unicast+0x449/0x710 [ 335.914092][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.914092][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.914092][ T72] ___sys_sendmsg+0xee/0x170 [ 335.914092][ T72] __sys_sendmsg+0xcd/0x170 [ 335.914092][ T72] do_syscall_64+0xc6/0x1e0 [ 335.914092][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.914092][ T72] [ 335.915814][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 335.915814][ T72] neigh_parms_alloc+0x1e5/0x510 [ 335.915814][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 335.915814][ T72] ipv6_find_idev+0x102/0x170 [ 335.915814][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 335.915814][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 335.915814][ T72] netlink_rcv_skb+0x130/0x360 [ 335.915814][ T72] netlink_unicast+0x449/0x710 [ 335.915814][ T72] netlink_sendmsg+0x723/0xbe0 [ 335.915814][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 335.915814][ T72] ___sys_sendmsg+0xee/0x170 [ 335.915814][ T72] __sys_sendmsg+0xcd/0x170 [ 335.915814][ T72] do_syscall_64+0xc6/0x1e0 [ 335.915814][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 335.915814][ T72] [ 346.158788][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 346.159195][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 346.159195][ T72] netdev_get_by_index+0x5e/0x80 [ 346.159195][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.159195][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.159195][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.159195][ T72] ipv6_add_addr+0x411/0x2000 [ 346.159195][ T72] inet6_addr_add+0x30e/0xa40 [ 346.159195][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.159195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.159195][ T72] netlink_rcv_skb+0x130/0x360 [ 346.159195][ T72] netlink_unicast+0x449/0x710 [ 346.159195][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.159195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.159195][ T72] ___sys_sendmsg+0xee/0x170 [ 346.159195][ T72] __sys_sendmsg+0xcd/0x170 [ 346.159195][ T72] do_syscall_64+0xc6/0x1e0 [ 346.159195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.159195][ T72] [ 346.161428][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 346.161428][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.161428][ T72] ipv6_find_idev+0x102/0x170 [ 346.161428][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.161428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.161428][ T72] netlink_rcv_skb+0x130/0x360 [ 346.161428][ T72] netlink_unicast+0x449/0x710 [ 346.161428][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.161428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.161428][ T72] ___sys_sendmsg+0xee/0x170 [ 346.161428][ T72] __sys_sendmsg+0xcd/0x170 [ 346.161428][ T72] do_syscall_64+0xc6/0x1e0 [ 346.161428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.161428][ T72] [ 346.163133][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 346.163133][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.163133][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.163133][ T72] ipv6_find_idev+0x102/0x170 [ 346.163133][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.163133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.163133][ T72] netlink_rcv_skb+0x130/0x360 [ 346.163133][ T72] netlink_unicast+0x449/0x710 [ 346.163133][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.163133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.163133][ T72] ___sys_sendmsg+0xee/0x170 [ 346.163133][ T72] __sys_sendmsg+0xcd/0x170 [ 346.163133][ T72] do_syscall_64+0xc6/0x1e0 [ 346.163133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.163133][ T72] [ 346.164979][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 346.165269][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 346.165269][ T72] netdev_get_by_index+0x5e/0x80 [ 346.165269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.165269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.165269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.165269][ T72] ipv6_add_addr+0x411/0x2000 [ 346.165269][ T72] inet6_addr_add+0x30e/0xa40 [ 346.165269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.165269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.165269][ T72] netlink_rcv_skb+0x130/0x360 [ 346.165269][ T72] netlink_unicast+0x449/0x710 [ 346.165269][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.165269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.165269][ T72] ___sys_sendmsg+0xee/0x170 [ 346.165269][ T72] __sys_sendmsg+0xcd/0x170 [ 346.165269][ T72] do_syscall_64+0xc6/0x1e0 [ 346.165269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.165269][ T72] [ 346.167450][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 346.167450][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.167450][ T72] ipv6_find_idev+0x102/0x170 [ 346.167450][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.167450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.167450][ T72] netlink_rcv_skb+0x130/0x360 [ 346.167450][ T72] netlink_unicast+0x449/0x710 [ 346.167450][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.167450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.167450][ T72] ___sys_sendmsg+0xee/0x170 [ 346.167450][ T72] __sys_sendmsg+0xcd/0x170 [ 346.167450][ T72] do_syscall_64+0xc6/0x1e0 [ 346.167450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.167450][ T72] [ 346.169139][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 346.169139][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.169139][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.169139][ T72] ipv6_find_idev+0x102/0x170 [ 346.169139][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.169139][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.169139][ T72] netlink_rcv_skb+0x130/0x360 [ 346.169139][ T72] netlink_unicast+0x449/0x710 [ 346.169139][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.169139][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.169139][ T72] ___sys_sendmsg+0xee/0x170 [ 346.169139][ T72] __sys_sendmsg+0xcd/0x170 [ 346.169139][ T72] do_syscall_64+0xc6/0x1e0 [ 346.169139][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.169139][ T72] [ 346.170991][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 346.171281][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 346.171281][ T72] netdev_get_by_index+0x5e/0x80 [ 346.171281][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.171281][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.171281][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.171281][ T72] ipv6_add_addr+0x411/0x2000 [ 346.171281][ T72] inet6_addr_add+0x30e/0xa40 [ 346.171281][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.171281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.171281][ T72] netlink_rcv_skb+0x130/0x360 [ 346.171281][ T72] netlink_unicast+0x449/0x710 [ 346.171281][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.171281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.171281][ T72] ___sys_sendmsg+0xee/0x170 [ 346.171281][ T72] __sys_sendmsg+0xcd/0x170 [ 346.171281][ T72] do_syscall_64+0xc6/0x1e0 [ 346.171281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.171281][ T72] [ 346.173470][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 346.173470][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.173470][ T72] ipv6_find_idev+0x102/0x170 [ 346.173470][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.173470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.173470][ T72] netlink_rcv_skb+0x130/0x360 [ 346.173470][ T72] netlink_unicast+0x449/0x710 [ 346.173470][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.173470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.173470][ T72] ___sys_sendmsg+0xee/0x170 [ 346.173470][ T72] __sys_sendmsg+0xcd/0x170 [ 346.173470][ T72] do_syscall_64+0xc6/0x1e0 [ 346.173470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.173470][ T72] [ 346.175149][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 346.175149][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.175149][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.175149][ T72] ipv6_find_idev+0x102/0x170 [ 346.175149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.175149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.175149][ T72] netlink_rcv_skb+0x130/0x360 [ 346.175149][ T72] netlink_unicast+0x449/0x710 [ 346.175149][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.175149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.175149][ T72] ___sys_sendmsg+0xee/0x170 [ 346.175149][ T72] __sys_sendmsg+0xcd/0x170 [ 346.175149][ T72] do_syscall_64+0xc6/0x1e0 [ 346.175149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.175149][ T72] [ 346.176990][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 346.177277][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 346.177277][ T72] netdev_get_by_index+0x5e/0x80 [ 346.177277][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.177277][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.177277][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.177277][ T72] ipv6_add_addr+0x411/0x2000 [ 346.177277][ T72] inet6_addr_add+0x30e/0xa40 [ 346.177277][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.177277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.177277][ T72] netlink_rcv_skb+0x130/0x360 [ 346.177277][ T72] netlink_unicast+0x449/0x710 [ 346.177277][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.177277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.177277][ T72] ___sys_sendmsg+0xee/0x170 [ 346.177277][ T72] __sys_sendmsg+0xcd/0x170 [ 346.177277][ T72] do_syscall_64+0xc6/0x1e0 [ 346.177277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.177277][ T72] [ 346.179481][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 346.179481][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.179481][ T72] ipv6_find_idev+0x102/0x170 [ 346.179481][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.179481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.179481][ T72] netlink_rcv_skb+0x130/0x360 [ 346.179481][ T72] netlink_unicast+0x449/0x710 [ 346.179481][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.179481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.179481][ T72] ___sys_sendmsg+0xee/0x170 [ 346.179481][ T72] __sys_sendmsg+0xcd/0x170 [ 346.179481][ T72] do_syscall_64+0xc6/0x1e0 [ 346.179481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.179481][ T72] [ 346.181164][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 346.181164][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.181164][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.181164][ T72] ipv6_find_idev+0x102/0x170 [ 346.181164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.181164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.181164][ T72] netlink_rcv_skb+0x130/0x360 [ 346.181164][ T72] netlink_unicast+0x449/0x710 [ 346.181164][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.181164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.181164][ T72] ___sys_sendmsg+0xee/0x170 [ 346.181164][ T72] __sys_sendmsg+0xcd/0x170 [ 346.181164][ T72] do_syscall_64+0xc6/0x1e0 [ 346.181164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.181164][ T72] [ 346.183426][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 346.183719][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 346.183719][ T72] netdev_get_by_index+0x5e/0x80 [ 346.183719][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.183719][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.183719][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.183719][ T72] ipv6_add_addr+0x411/0x2000 [ 346.183719][ T72] inet6_addr_add+0x30e/0xa40 [ 346.183719][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.183719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.183719][ T72] netlink_rcv_skb+0x130/0x360 [ 346.183719][ T72] netlink_unicast+0x449/0x710 [ 346.183719][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.183719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.183719][ T72] ___sys_sendmsg+0xee/0x170 [ 346.183719][ T72] __sys_sendmsg+0xcd/0x170 [ 346.183719][ T72] do_syscall_64+0xc6/0x1e0 [ 346.183719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.183719][ T72] [ 346.185902][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 346.185902][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.185902][ T72] ipv6_find_idev+0x102/0x170 [ 346.185902][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.185902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.185902][ T72] netlink_rcv_skb+0x130/0x360 [ 346.185902][ T72] netlink_unicast+0x449/0x710 [ 346.185902][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.185902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.185902][ T72] ___sys_sendmsg+0xee/0x170 [ 346.185902][ T72] __sys_sendmsg+0xcd/0x170 [ 346.185902][ T72] do_syscall_64+0xc6/0x1e0 [ 346.185902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.185902][ T72] [ 346.187482][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 346.187482][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.187482][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.187482][ T72] ipv6_find_idev+0x102/0x170 [ 346.187482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.187482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.187482][ T72] netlink_rcv_skb+0x130/0x360 [ 346.187482][ T72] netlink_unicast+0x449/0x710 [ 346.187482][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.187482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.187482][ T72] ___sys_sendmsg+0xee/0x170 [ 346.187482][ T72] __sys_sendmsg+0xcd/0x170 [ 346.187482][ T72] do_syscall_64+0xc6/0x1e0 [ 346.187482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.187482][ T72] [ 346.189202][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 346.189475][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 346.189475][ T72] netdev_get_by_index+0x5e/0x80 [ 346.189475][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.189475][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.189475][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.189475][ T72] ipv6_add_addr+0x411/0x2000 [ 346.189475][ T72] inet6_addr_add+0x30e/0xa40 [ 346.189475][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.189475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.189475][ T72] netlink_rcv_skb+0x130/0x360 [ 346.189475][ T72] netlink_unicast+0x449/0x710 [ 346.189475][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.189475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.189475][ T72] ___sys_sendmsg+0xee/0x170 [ 346.189475][ T72] __sys_sendmsg+0xcd/0x170 [ 346.189475][ T72] do_syscall_64+0xc6/0x1e0 [ 346.189475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.189475][ T72] [ 346.191572][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 346.191572][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.191572][ T72] ipv6_find_idev+0x102/0x170 [ 346.191572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.191572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.191572][ T72] netlink_rcv_skb+0x130/0x360 [ 346.191572][ T72] netlink_unicast+0x449/0x710 [ 346.191572][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.191572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.191572][ T72] ___sys_sendmsg+0xee/0x170 [ 346.191572][ T72] __sys_sendmsg+0xcd/0x170 [ 346.191572][ T72] do_syscall_64+0xc6/0x1e0 [ 346.191572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.191572][ T72] [ 346.193345][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 346.193345][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.193345][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.193345][ T72] ipv6_find_idev+0x102/0x170 [ 346.193345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.193345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.193345][ T72] netlink_rcv_skb+0x130/0x360 [ 346.193345][ T72] netlink_unicast+0x449/0x710 [ 346.193345][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.193345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.193345][ T72] ___sys_sendmsg+0xee/0x170 [ 346.193345][ T72] __sys_sendmsg+0xcd/0x170 [ 346.193345][ T72] do_syscall_64+0xc6/0x1e0 [ 346.193345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.193345][ T72] [ 346.195237][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 346.195502][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 346.195502][ T72] netdev_get_by_index+0x5e/0x80 [ 346.195502][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.195502][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.195502][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.195502][ T72] ipv6_add_addr+0x411/0x2000 [ 346.195502][ T72] inet6_addr_add+0x30e/0xa40 [ 346.195502][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.195502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.195502][ T72] netlink_rcv_skb+0x130/0x360 [ 346.195502][ T72] netlink_unicast+0x449/0x710 [ 346.195502][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.195502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.195502][ T72] ___sys_sendmsg+0xee/0x170 [ 346.195502][ T72] __sys_sendmsg+0xcd/0x170 [ 346.195502][ T72] do_syscall_64+0xc6/0x1e0 [ 346.195502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.195502][ T72] [ 346.197717][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 346.197717][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.197717][ T72] ipv6_find_idev+0x102/0x170 [ 346.197717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.197717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.197717][ T72] netlink_rcv_skb+0x130/0x360 [ 346.197717][ T72] netlink_unicast+0x449/0x710 [ 346.197717][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.197717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.197717][ T72] ___sys_sendmsg+0xee/0x170 [ 346.197717][ T72] __sys_sendmsg+0xcd/0x170 [ 346.197717][ T72] do_syscall_64+0xc6/0x1e0 [ 346.197717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.197717][ T72] [ 346.199432][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 346.199432][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.199432][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.199432][ T72] ipv6_find_idev+0x102/0x170 [ 346.199432][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.199432][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.199432][ T72] netlink_rcv_skb+0x130/0x360 [ 346.199432][ T72] netlink_unicast+0x449/0x710 [ 346.199432][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.199432][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.199432][ T72] ___sys_sendmsg+0xee/0x170 [ 346.199432][ T72] __sys_sendmsg+0xcd/0x170 [ 346.199432][ T72] do_syscall_64+0xc6/0x1e0 [ 346.199432][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.199432][ T72] [ 346.201316][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 346.201584][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 346.201584][ T72] netdev_get_by_index+0x5e/0x80 [ 346.201584][ T72] fib6_nh_init+0x3d8/0x15b0 [ 346.201584][ T72] ip6_route_info_create+0xf18/0x17d0 [ 346.201584][ T72] addrconf_f6i_alloc+0x244/0x410 [ 346.201584][ T72] ipv6_add_addr+0x411/0x2000 [ 346.201584][ T72] inet6_addr_add+0x30e/0xa40 [ 346.201584][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 346.201584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.201584][ T72] netlink_rcv_skb+0x130/0x360 [ 346.201584][ T72] netlink_unicast+0x449/0x710 [ 346.201584][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.201584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.201584][ T72] ___sys_sendmsg+0xee/0x170 [ 346.201584][ T72] __sys_sendmsg+0xcd/0x170 [ 346.201584][ T72] do_syscall_64+0xc6/0x1e0 [ 346.201584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.201584][ T72] [ 346.203900][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 346.203900][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 346.203900][ T72] ipv6_find_idev+0x102/0x170 [ 346.203900][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.203900][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.203900][ T72] netlink_rcv_skb+0x130/0x360 [ 346.203900][ T72] netlink_unicast+0x449/0x710 [ 346.203900][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.203900][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.203900][ T72] ___sys_sendmsg+0xee/0x170 [ 346.203900][ T72] __sys_sendmsg+0xcd/0x170 [ 346.203900][ T72] do_syscall_64+0xc6/0x1e0 [ 346.203900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.203900][ T72] [ 346.205763][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 346.205763][ T72] neigh_parms_alloc+0x1e5/0x510 [ 346.205763][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 346.205763][ T72] ipv6_find_idev+0x102/0x170 [ 346.205763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 346.205763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 346.205763][ T72] netlink_rcv_skb+0x130/0x360 [ 346.205763][ T72] netlink_unicast+0x449/0x710 [ 346.205763][ T72] netlink_sendmsg+0x723/0xbe0 [ 346.205763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 346.205763][ T72] ___sys_sendmsg+0xee/0x170 [ 346.205763][ T72] __sys_sendmsg+0xcd/0x170 [ 346.205763][ T72] do_syscall_64+0xc6/0x1e0 [ 346.205763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 346.205763][ T72] [ 356.430812][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 356.431402][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 356.431402][ T72] netdev_get_by_index+0x5e/0x80 [ 356.431402][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.431402][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.431402][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.431402][ T72] ipv6_add_addr+0x411/0x2000 [ 356.431402][ T72] inet6_addr_add+0x30e/0xa40 [ 356.431402][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.431402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.431402][ T72] netlink_rcv_skb+0x130/0x360 [ 356.431402][ T72] netlink_unicast+0x449/0x710 [ 356.431402][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.431402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.431402][ T72] ___sys_sendmsg+0xee/0x170 [ 356.431402][ T72] __sys_sendmsg+0xcd/0x170 [ 356.431402][ T72] do_syscall_64+0xc6/0x1e0 [ 356.431402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.431402][ T72] [ 356.434165][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 356.434165][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.434165][ T72] ipv6_find_idev+0x102/0x170 [ 356.434165][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.434165][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.434165][ T72] netlink_rcv_skb+0x130/0x360 [ 356.434165][ T72] netlink_unicast+0x449/0x710 [ 356.434165][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.434165][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.434165][ T72] ___sys_sendmsg+0xee/0x170 [ 356.434165][ T72] __sys_sendmsg+0xcd/0x170 [ 356.434165][ T72] do_syscall_64+0xc6/0x1e0 [ 356.434165][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.434165][ T72] [ 356.435960][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 356.435960][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.435960][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.435960][ T72] ipv6_find_idev+0x102/0x170 [ 356.435960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.435960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.435960][ T72] netlink_rcv_skb+0x130/0x360 [ 356.435960][ T72] netlink_unicast+0x449/0x710 [ 356.435960][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.435960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.435960][ T72] ___sys_sendmsg+0xee/0x170 [ 356.435960][ T72] __sys_sendmsg+0xcd/0x170 [ 356.435960][ T72] do_syscall_64+0xc6/0x1e0 [ 356.435960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.435960][ T72] [ 356.438154][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 356.438467][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 356.438467][ T72] netdev_get_by_index+0x5e/0x80 [ 356.438467][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.438467][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.438467][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.438467][ T72] ipv6_add_addr+0x411/0x2000 [ 356.438467][ T72] inet6_addr_add+0x30e/0xa40 [ 356.438467][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.438467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.438467][ T72] netlink_rcv_skb+0x130/0x360 [ 356.438467][ T72] netlink_unicast+0x449/0x710 [ 356.438467][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.438467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.438467][ T72] ___sys_sendmsg+0xee/0x170 [ 356.438467][ T72] __sys_sendmsg+0xcd/0x170 [ 356.438467][ T72] do_syscall_64+0xc6/0x1e0 [ 356.438467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.438467][ T72] [ 356.440707][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 356.440707][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.440707][ T72] ipv6_find_idev+0x102/0x170 [ 356.440707][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.440707][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.440707][ T72] netlink_rcv_skb+0x130/0x360 [ 356.440707][ T72] netlink_unicast+0x449/0x710 [ 356.440707][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.440707][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.440707][ T72] ___sys_sendmsg+0xee/0x170 [ 356.440707][ T72] __sys_sendmsg+0xcd/0x170 [ 356.440707][ T72] do_syscall_64+0xc6/0x1e0 [ 356.440707][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.440707][ T72] [ 356.442451][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 356.442451][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.442451][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.442451][ T72] ipv6_find_idev+0x102/0x170 [ 356.442451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.442451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.442451][ T72] netlink_rcv_skb+0x130/0x360 [ 356.442451][ T72] netlink_unicast+0x449/0x710 [ 356.442451][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.442451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.442451][ T72] ___sys_sendmsg+0xee/0x170 [ 356.442451][ T72] __sys_sendmsg+0xcd/0x170 [ 356.442451][ T72] do_syscall_64+0xc6/0x1e0 [ 356.442451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.442451][ T72] [ 356.444413][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 356.444711][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 356.444711][ T72] netdev_get_by_index+0x5e/0x80 [ 356.444711][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.444711][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.444711][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.444711][ T72] ipv6_add_addr+0x411/0x2000 [ 356.444711][ T72] inet6_addr_add+0x30e/0xa40 [ 356.444711][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.444711][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.444711][ T72] netlink_rcv_skb+0x130/0x360 [ 356.444711][ T72] netlink_unicast+0x449/0x710 [ 356.444711][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.444711][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.444711][ T72] ___sys_sendmsg+0xee/0x170 [ 356.444711][ T72] __sys_sendmsg+0xcd/0x170 [ 356.444711][ T72] do_syscall_64+0xc6/0x1e0 [ 356.444711][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.444711][ T72] [ 356.446930][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 356.446930][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.446930][ T72] ipv6_find_idev+0x102/0x170 [ 356.446930][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.446930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.446930][ T72] netlink_rcv_skb+0x130/0x360 [ 356.446930][ T72] netlink_unicast+0x449/0x710 [ 356.446930][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.446930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.446930][ T72] ___sys_sendmsg+0xee/0x170 [ 356.446930][ T72] __sys_sendmsg+0xcd/0x170 [ 356.446930][ T72] do_syscall_64+0xc6/0x1e0 [ 356.446930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.446930][ T72] [ 356.449018][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 356.449018][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.449018][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.449018][ T72] ipv6_find_idev+0x102/0x170 [ 356.449018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.449018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.449018][ T72] netlink_rcv_skb+0x130/0x360 [ 356.449018][ T72] netlink_unicast+0x449/0x710 [ 356.449018][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.449018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.449018][ T72] ___sys_sendmsg+0xee/0x170 [ 356.449018][ T72] __sys_sendmsg+0xcd/0x170 [ 356.449018][ T72] do_syscall_64+0xc6/0x1e0 [ 356.449018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.449018][ T72] [ 356.450920][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 356.451223][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 356.451223][ T72] netdev_get_by_index+0x5e/0x80 [ 356.451223][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.451223][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.451223][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.451223][ T72] ipv6_add_addr+0x411/0x2000 [ 356.451223][ T72] inet6_addr_add+0x30e/0xa40 [ 356.451223][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.451223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.451223][ T72] netlink_rcv_skb+0x130/0x360 [ 356.451223][ T72] netlink_unicast+0x449/0x710 [ 356.451223][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.451223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.451223][ T72] ___sys_sendmsg+0xee/0x170 [ 356.451223][ T72] __sys_sendmsg+0xcd/0x170 [ 356.451223][ T72] do_syscall_64+0xc6/0x1e0 [ 356.451223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.451223][ T72] [ 356.453465][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 356.453465][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.453465][ T72] ipv6_find_idev+0x102/0x170 [ 356.453465][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.453465][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.453465][ T72] netlink_rcv_skb+0x130/0x360 [ 356.453465][ T72] netlink_unicast+0x449/0x710 [ 356.453465][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.453465][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.453465][ T72] ___sys_sendmsg+0xee/0x170 [ 356.453465][ T72] __sys_sendmsg+0xcd/0x170 [ 356.453465][ T72] do_syscall_64+0xc6/0x1e0 [ 356.453465][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.453465][ T72] [ 356.455214][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 356.455214][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.455214][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.455214][ T72] ipv6_find_idev+0x102/0x170 [ 356.455214][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.455214][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.455214][ T72] netlink_rcv_skb+0x130/0x360 [ 356.455214][ T72] netlink_unicast+0x449/0x710 [ 356.455214][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.455214][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.455214][ T72] ___sys_sendmsg+0xee/0x170 [ 356.455214][ T72] __sys_sendmsg+0xcd/0x170 [ 356.455214][ T72] do_syscall_64+0xc6/0x1e0 [ 356.455214][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.455214][ T72] [ 356.457621][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 356.458311][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 356.458311][ T72] netdev_get_by_index+0x5e/0x80 [ 356.458311][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.458311][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.458311][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.458311][ T72] ipv6_add_addr+0x411/0x2000 [ 356.458311][ T72] inet6_addr_add+0x30e/0xa40 [ 356.458311][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.458311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.458311][ T72] netlink_rcv_skb+0x130/0x360 [ 356.458311][ T72] netlink_unicast+0x449/0x710 [ 356.458311][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.458311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.458311][ T72] ___sys_sendmsg+0xee/0x170 [ 356.458311][ T72] __sys_sendmsg+0xcd/0x170 [ 356.458311][ T72] do_syscall_64+0xc6/0x1e0 [ 356.458311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.458311][ T72] [ 356.460670][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 356.460670][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.460670][ T72] ipv6_find_idev+0x102/0x170 [ 356.460670][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.460670][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.460670][ T72] netlink_rcv_skb+0x130/0x360 [ 356.460670][ T72] netlink_unicast+0x449/0x710 [ 356.460670][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.460670][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.460670][ T72] ___sys_sendmsg+0xee/0x170 [ 356.460670][ T72] __sys_sendmsg+0xcd/0x170 [ 356.460670][ T72] do_syscall_64+0xc6/0x1e0 [ 356.460670][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.460670][ T72] [ 356.462434][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 356.462434][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.462434][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.462434][ T72] ipv6_find_idev+0x102/0x170 [ 356.462434][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.462434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.462434][ T72] netlink_rcv_skb+0x130/0x360 [ 356.462434][ T72] netlink_unicast+0x449/0x710 [ 356.462434][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.462434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.462434][ T72] ___sys_sendmsg+0xee/0x170 [ 356.462434][ T72] __sys_sendmsg+0xcd/0x170 [ 356.462434][ T72] do_syscall_64+0xc6/0x1e0 [ 356.462434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.462434][ T72] [ 356.464387][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 356.464694][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 356.464694][ T72] netdev_get_by_index+0x5e/0x80 [ 356.464694][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.464694][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.464694][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.464694][ T72] ipv6_add_addr+0x411/0x2000 [ 356.464694][ T72] inet6_addr_add+0x30e/0xa40 [ 356.464694][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.464694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.464694][ T72] netlink_rcv_skb+0x130/0x360 [ 356.464694][ T72] netlink_unicast+0x449/0x710 [ 356.464694][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.464694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.464694][ T72] ___sys_sendmsg+0xee/0x170 [ 356.464694][ T72] __sys_sendmsg+0xcd/0x170 [ 356.464694][ T72] do_syscall_64+0xc6/0x1e0 [ 356.464694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.464694][ T72] [ 356.467020][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 356.467020][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.467020][ T72] ipv6_find_idev+0x102/0x170 [ 356.467020][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.467020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.467020][ T72] netlink_rcv_skb+0x130/0x360 [ 356.467020][ T72] netlink_unicast+0x449/0x710 [ 356.467020][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.467020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.467020][ T72] ___sys_sendmsg+0xee/0x170 [ 356.467020][ T72] __sys_sendmsg+0xcd/0x170 [ 356.467020][ T72] do_syscall_64+0xc6/0x1e0 [ 356.467020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.467020][ T72] [ 356.468804][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 356.468804][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.468804][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.468804][ T72] ipv6_find_idev+0x102/0x170 [ 356.468804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.468804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.468804][ T72] netlink_rcv_skb+0x130/0x360 [ 356.468804][ T72] netlink_unicast+0x449/0x710 [ 356.468804][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.468804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.468804][ T72] ___sys_sendmsg+0xee/0x170 [ 356.468804][ T72] __sys_sendmsg+0xcd/0x170 [ 356.468804][ T72] do_syscall_64+0xc6/0x1e0 [ 356.468804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.468804][ T72] [ 356.470876][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 356.471170][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 356.471170][ T72] netdev_get_by_index+0x5e/0x80 [ 356.471170][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.471170][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.471170][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.471170][ T72] ipv6_add_addr+0x411/0x2000 [ 356.471170][ T72] inet6_addr_add+0x30e/0xa40 [ 356.471170][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.471170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.471170][ T72] netlink_rcv_skb+0x130/0x360 [ 356.471170][ T72] netlink_unicast+0x449/0x710 [ 356.471170][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.471170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.471170][ T72] ___sys_sendmsg+0xee/0x170 [ 356.471170][ T72] __sys_sendmsg+0xcd/0x170 [ 356.471170][ T72] do_syscall_64+0xc6/0x1e0 [ 356.471170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.471170][ T72] [ 356.473580][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 356.473580][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.473580][ T72] ipv6_find_idev+0x102/0x170 [ 356.473580][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.473580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.473580][ T72] netlink_rcv_skb+0x130/0x360 [ 356.473580][ T72] netlink_unicast+0x449/0x710 [ 356.473580][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.473580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.473580][ T72] ___sys_sendmsg+0xee/0x170 [ 356.473580][ T72] __sys_sendmsg+0xcd/0x170 [ 356.473580][ T72] do_syscall_64+0xc6/0x1e0 [ 356.473580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.473580][ T72] [ 356.475408][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 356.475408][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.475408][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.475408][ T72] ipv6_find_idev+0x102/0x170 [ 356.475408][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.475408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.475408][ T72] netlink_rcv_skb+0x130/0x360 [ 356.475408][ T72] netlink_unicast+0x449/0x710 [ 356.475408][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.475408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.475408][ T72] ___sys_sendmsg+0xee/0x170 [ 356.475408][ T72] __sys_sendmsg+0xcd/0x170 [ 356.475408][ T72] do_syscall_64+0xc6/0x1e0 [ 356.475408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.475408][ T72] [ 356.477573][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 356.477929][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 356.477929][ T72] netdev_get_by_index+0x5e/0x80 [ 356.477929][ T72] fib6_nh_init+0x3d8/0x15b0 [ 356.477929][ T72] ip6_route_info_create+0xf18/0x17d0 [ 356.477929][ T72] addrconf_f6i_alloc+0x244/0x410 [ 356.477929][ T72] ipv6_add_addr+0x411/0x2000 [ 356.477929][ T72] inet6_addr_add+0x30e/0xa40 [ 356.477929][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 356.477929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.477929][ T72] netlink_rcv_skb+0x130/0x360 [ 356.477929][ T72] netlink_unicast+0x449/0x710 [ 356.477929][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.477929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.477929][ T72] ___sys_sendmsg+0xee/0x170 [ 356.477929][ T72] __sys_sendmsg+0xcd/0x170 [ 356.477929][ T72] do_syscall_64+0xc6/0x1e0 [ 356.477929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.477929][ T72] [ 356.480327][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 356.480327][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 356.480327][ T72] ipv6_find_idev+0x102/0x170 [ 356.480327][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.480327][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.480327][ T72] netlink_rcv_skb+0x130/0x360 [ 356.480327][ T72] netlink_unicast+0x449/0x710 [ 356.480327][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.480327][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.480327][ T72] ___sys_sendmsg+0xee/0x170 [ 356.480327][ T72] __sys_sendmsg+0xcd/0x170 [ 356.480327][ T72] do_syscall_64+0xc6/0x1e0 [ 356.480327][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.480327][ T72] [ 356.482241][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 356.482241][ T72] neigh_parms_alloc+0x1e5/0x510 [ 356.482241][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 356.482241][ T72] ipv6_find_idev+0x102/0x170 [ 356.482241][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 356.482241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 356.482241][ T72] netlink_rcv_skb+0x130/0x360 [ 356.482241][ T72] netlink_unicast+0x449/0x710 [ 356.482241][ T72] netlink_sendmsg+0x723/0xbe0 [ 356.482241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 356.482241][ T72] ___sys_sendmsg+0xee/0x170 [ 356.482241][ T72] __sys_sendmsg+0xcd/0x170 [ 356.482241][ T72] do_syscall_64+0xc6/0x1e0 [ 356.482241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 356.482241][ T72] [ 366.726842][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 366.727249][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 366.727249][ T72] netdev_get_by_index+0x5e/0x80 [ 366.727249][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.727249][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.727249][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.727249][ T72] ipv6_add_addr+0x411/0x2000 [ 366.727249][ T72] inet6_addr_add+0x30e/0xa40 [ 366.727249][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.727249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.727249][ T72] netlink_rcv_skb+0x130/0x360 [ 366.727249][ T72] netlink_unicast+0x449/0x710 [ 366.727249][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.727249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.727249][ T72] ___sys_sendmsg+0xee/0x170 [ 366.727249][ T72] __sys_sendmsg+0xcd/0x170 [ 366.727249][ T72] do_syscall_64+0xc6/0x1e0 [ 366.727249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.727249][ T72] [ 366.729234][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 366.729234][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.729234][ T72] ipv6_find_idev+0x102/0x170 [ 366.729234][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.729234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.729234][ T72] netlink_rcv_skb+0x130/0x360 [ 366.729234][ T72] netlink_unicast+0x449/0x710 [ 366.729234][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.729234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.729234][ T72] ___sys_sendmsg+0xee/0x170 [ 366.729234][ T72] __sys_sendmsg+0xcd/0x170 [ 366.729234][ T72] do_syscall_64+0xc6/0x1e0 [ 366.729234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.729234][ T72] [ 366.730753][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 366.730753][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.730753][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.730753][ T72] ipv6_find_idev+0x102/0x170 [ 366.730753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.730753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.730753][ T72] netlink_rcv_skb+0x130/0x360 [ 366.730753][ T72] netlink_unicast+0x449/0x710 [ 366.730753][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.730753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.730753][ T72] ___sys_sendmsg+0xee/0x170 [ 366.730753][ T72] __sys_sendmsg+0xcd/0x170 [ 366.730753][ T72] do_syscall_64+0xc6/0x1e0 [ 366.730753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.730753][ T72] [ 366.732415][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 366.732683][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 366.732683][ T72] netdev_get_by_index+0x5e/0x80 [ 366.732683][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.732683][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.732683][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.732683][ T72] ipv6_add_addr+0x411/0x2000 [ 366.732683][ T72] inet6_addr_add+0x30e/0xa40 [ 366.732683][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.732683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.732683][ T72] netlink_rcv_skb+0x130/0x360 [ 366.732683][ T72] netlink_unicast+0x449/0x710 [ 366.732683][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.732683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.732683][ T72] ___sys_sendmsg+0xee/0x170 [ 366.732683][ T72] __sys_sendmsg+0xcd/0x170 [ 366.732683][ T72] do_syscall_64+0xc6/0x1e0 [ 366.732683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.732683][ T72] [ 366.734648][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 366.734648][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.734648][ T72] ipv6_find_idev+0x102/0x170 [ 366.734648][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.734648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.734648][ T72] netlink_rcv_skb+0x130/0x360 [ 366.734648][ T72] netlink_unicast+0x449/0x710 [ 366.734648][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.734648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.734648][ T72] ___sys_sendmsg+0xee/0x170 [ 366.734648][ T72] __sys_sendmsg+0xcd/0x170 [ 366.734648][ T72] do_syscall_64+0xc6/0x1e0 [ 366.734648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.734648][ T72] [ 366.736181][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 366.736181][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.736181][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.736181][ T72] ipv6_find_idev+0x102/0x170 [ 366.736181][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.736181][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.736181][ T72] netlink_rcv_skb+0x130/0x360 [ 366.736181][ T72] netlink_unicast+0x449/0x710 [ 366.736181][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.736181][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.736181][ T72] ___sys_sendmsg+0xee/0x170 [ 366.736181][ T72] __sys_sendmsg+0xcd/0x170 [ 366.736181][ T72] do_syscall_64+0xc6/0x1e0 [ 366.736181][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.736181][ T72] [ 366.737843][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 366.738112][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 366.738112][ T72] netdev_get_by_index+0x5e/0x80 [ 366.738112][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.738112][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.738112][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.738112][ T72] ipv6_add_addr+0x411/0x2000 [ 366.738112][ T72] inet6_addr_add+0x30e/0xa40 [ 366.738112][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.738112][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.738112][ T72] netlink_rcv_skb+0x130/0x360 [ 366.738112][ T72] netlink_unicast+0x449/0x710 [ 366.738112][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.738112][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.738112][ T72] ___sys_sendmsg+0xee/0x170 [ 366.738112][ T72] __sys_sendmsg+0xcd/0x170 [ 366.738112][ T72] do_syscall_64+0xc6/0x1e0 [ 366.738112][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.738112][ T72] [ 366.740095][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 366.740095][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.740095][ T72] ipv6_find_idev+0x102/0x170 [ 366.740095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.740095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.740095][ T72] netlink_rcv_skb+0x130/0x360 [ 366.740095][ T72] netlink_unicast+0x449/0x710 [ 366.740095][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.740095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.740095][ T72] ___sys_sendmsg+0xee/0x170 [ 366.740095][ T72] __sys_sendmsg+0xcd/0x170 [ 366.740095][ T72] do_syscall_64+0xc6/0x1e0 [ 366.740095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.740095][ T72] [ 366.741604][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 366.741604][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.741604][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.741604][ T72] ipv6_find_idev+0x102/0x170 [ 366.741604][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.741604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.741604][ T72] netlink_rcv_skb+0x130/0x360 [ 366.741604][ T72] netlink_unicast+0x449/0x710 [ 366.741604][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.741604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.741604][ T72] ___sys_sendmsg+0xee/0x170 [ 366.741604][ T72] __sys_sendmsg+0xcd/0x170 [ 366.741604][ T72] do_syscall_64+0xc6/0x1e0 [ 366.741604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.741604][ T72] [ 366.743266][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 366.743547][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 366.743547][ T72] netdev_get_by_index+0x5e/0x80 [ 366.743547][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.743547][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.743547][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.743547][ T72] ipv6_add_addr+0x411/0x2000 [ 366.743547][ T72] inet6_addr_add+0x30e/0xa40 [ 366.743547][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.743547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.743547][ T72] netlink_rcv_skb+0x130/0x360 [ 366.743547][ T72] netlink_unicast+0x449/0x710 [ 366.743547][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.743547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.743547][ T72] ___sys_sendmsg+0xee/0x170 [ 366.743547][ T72] __sys_sendmsg+0xcd/0x170 [ 366.743547][ T72] do_syscall_64+0xc6/0x1e0 [ 366.743547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.743547][ T72] [ 366.745520][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 366.745520][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.745520][ T72] ipv6_find_idev+0x102/0x170 [ 366.745520][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.745520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.745520][ T72] netlink_rcv_skb+0x130/0x360 [ 366.745520][ T72] netlink_unicast+0x449/0x710 [ 366.745520][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.745520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.745520][ T72] ___sys_sendmsg+0xee/0x170 [ 366.745520][ T72] __sys_sendmsg+0xcd/0x170 [ 366.745520][ T72] do_syscall_64+0xc6/0x1e0 [ 366.745520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.745520][ T72] [ 366.747033][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 366.747033][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.747033][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.747033][ T72] ipv6_find_idev+0x102/0x170 [ 366.747033][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.747033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.747033][ T72] netlink_rcv_skb+0x130/0x360 [ 366.747033][ T72] netlink_unicast+0x449/0x710 [ 366.747033][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.747033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.747033][ T72] ___sys_sendmsg+0xee/0x170 [ 366.747033][ T72] __sys_sendmsg+0xcd/0x170 [ 366.747033][ T72] do_syscall_64+0xc6/0x1e0 [ 366.747033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.747033][ T72] [ 366.749098][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 366.749368][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 366.749368][ T72] netdev_get_by_index+0x5e/0x80 [ 366.749368][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.749368][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.749368][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.749368][ T72] ipv6_add_addr+0x411/0x2000 [ 366.749368][ T72] inet6_addr_add+0x30e/0xa40 [ 366.749368][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.749368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.749368][ T72] netlink_rcv_skb+0x130/0x360 [ 366.749368][ T72] netlink_unicast+0x449/0x710 [ 366.749368][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.749368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.749368][ T72] ___sys_sendmsg+0xee/0x170 [ 366.749368][ T72] __sys_sendmsg+0xcd/0x170 [ 366.749368][ T72] do_syscall_64+0xc6/0x1e0 [ 366.749368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.749368][ T72] [ 366.751327][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 366.751327][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.751327][ T72] ipv6_find_idev+0x102/0x170 [ 366.751327][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.751327][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.751327][ T72] netlink_rcv_skb+0x130/0x360 [ 366.751327][ T72] netlink_unicast+0x449/0x710 [ 366.751327][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.751327][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.751327][ T72] ___sys_sendmsg+0xee/0x170 [ 366.751327][ T72] __sys_sendmsg+0xcd/0x170 [ 366.751327][ T72] do_syscall_64+0xc6/0x1e0 [ 366.751327][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.751327][ T72] [ 366.752842][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 366.752842][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.752842][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.752842][ T72] ipv6_find_idev+0x102/0x170 [ 366.752842][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.752842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.752842][ T72] netlink_rcv_skb+0x130/0x360 [ 366.752842][ T72] netlink_unicast+0x449/0x710 [ 366.752842][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.752842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.752842][ T72] ___sys_sendmsg+0xee/0x170 [ 366.752842][ T72] __sys_sendmsg+0xcd/0x170 [ 366.752842][ T72] do_syscall_64+0xc6/0x1e0 [ 366.752842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.752842][ T72] [ 366.754537][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 366.754848][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 366.754848][ T72] netdev_get_by_index+0x5e/0x80 [ 366.754848][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.754848][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.754848][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.754848][ T72] ipv6_add_addr+0x411/0x2000 [ 366.754848][ T72] inet6_addr_add+0x30e/0xa40 [ 366.754848][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.754848][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.754848][ T72] netlink_rcv_skb+0x130/0x360 [ 366.754848][ T72] netlink_unicast+0x449/0x710 [ 366.754848][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.754848][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.754848][ T72] ___sys_sendmsg+0xee/0x170 [ 366.754848][ T72] __sys_sendmsg+0xcd/0x170 [ 366.754848][ T72] do_syscall_64+0xc6/0x1e0 [ 366.754848][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.754848][ T72] [ 366.756943][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 366.756943][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.756943][ T72] ipv6_find_idev+0x102/0x170 [ 366.756943][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.756943][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.756943][ T72] netlink_rcv_skb+0x130/0x360 [ 366.756943][ T72] netlink_unicast+0x449/0x710 [ 366.756943][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.756943][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.756943][ T72] ___sys_sendmsg+0xee/0x170 [ 366.756943][ T72] __sys_sendmsg+0xcd/0x170 [ 366.756943][ T72] do_syscall_64+0xc6/0x1e0 [ 366.756943][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.756943][ T72] [ 366.758638][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 366.758638][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.758638][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.758638][ T72] ipv6_find_idev+0x102/0x170 [ 366.758638][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.758638][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.758638][ T72] netlink_rcv_skb+0x130/0x360 [ 366.758638][ T72] netlink_unicast+0x449/0x710 [ 366.758638][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.758638][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.758638][ T72] ___sys_sendmsg+0xee/0x170 [ 366.758638][ T72] __sys_sendmsg+0xcd/0x170 [ 366.758638][ T72] do_syscall_64+0xc6/0x1e0 [ 366.758638][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.758638][ T72] [ 366.760594][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 366.760907][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 366.760907][ T72] netdev_get_by_index+0x5e/0x80 [ 366.760907][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.760907][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.760907][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.760907][ T72] ipv6_add_addr+0x411/0x2000 [ 366.760907][ T72] inet6_addr_add+0x30e/0xa40 [ 366.760907][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.760907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.760907][ T72] netlink_rcv_skb+0x130/0x360 [ 366.760907][ T72] netlink_unicast+0x449/0x710 [ 366.760907][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.760907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.760907][ T72] ___sys_sendmsg+0xee/0x170 [ 366.760907][ T72] __sys_sendmsg+0xcd/0x170 [ 366.760907][ T72] do_syscall_64+0xc6/0x1e0 [ 366.760907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.760907][ T72] [ 366.763046][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 366.763046][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.763046][ T72] ipv6_find_idev+0x102/0x170 [ 366.763046][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.763046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.763046][ T72] netlink_rcv_skb+0x130/0x360 [ 366.763046][ T72] netlink_unicast+0x449/0x710 [ 366.763046][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.763046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.763046][ T72] ___sys_sendmsg+0xee/0x170 [ 366.763046][ T72] __sys_sendmsg+0xcd/0x170 [ 366.763046][ T72] do_syscall_64+0xc6/0x1e0 [ 366.763046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.763046][ T72] [ 366.764735][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 366.764735][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.764735][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.764735][ T72] ipv6_find_idev+0x102/0x170 [ 366.764735][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.764735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.764735][ T72] netlink_rcv_skb+0x130/0x360 [ 366.764735][ T72] netlink_unicast+0x449/0x710 [ 366.764735][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.764735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.764735][ T72] ___sys_sendmsg+0xee/0x170 [ 366.764735][ T72] __sys_sendmsg+0xcd/0x170 [ 366.764735][ T72] do_syscall_64+0xc6/0x1e0 [ 366.764735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.764735][ T72] [ 366.766666][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 366.766984][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 366.766984][ T72] netdev_get_by_index+0x5e/0x80 [ 366.766984][ T72] fib6_nh_init+0x3d8/0x15b0 [ 366.766984][ T72] ip6_route_info_create+0xf18/0x17d0 [ 366.766984][ T72] addrconf_f6i_alloc+0x244/0x410 [ 366.766984][ T72] ipv6_add_addr+0x411/0x2000 [ 366.766984][ T72] inet6_addr_add+0x30e/0xa40 [ 366.766984][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 366.766984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.766984][ T72] netlink_rcv_skb+0x130/0x360 [ 366.766984][ T72] netlink_unicast+0x449/0x710 [ 366.766984][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.766984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.766984][ T72] ___sys_sendmsg+0xee/0x170 [ 366.766984][ T72] __sys_sendmsg+0xcd/0x170 [ 366.766984][ T72] do_syscall_64+0xc6/0x1e0 [ 366.766984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.766984][ T72] [ 366.769135][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 366.769135][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 366.769135][ T72] ipv6_find_idev+0x102/0x170 [ 366.769135][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.769135][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.769135][ T72] netlink_rcv_skb+0x130/0x360 [ 366.769135][ T72] netlink_unicast+0x449/0x710 [ 366.769135][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.769135][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.769135][ T72] ___sys_sendmsg+0xee/0x170 [ 366.769135][ T72] __sys_sendmsg+0xcd/0x170 [ 366.769135][ T72] do_syscall_64+0xc6/0x1e0 [ 366.769135][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.769135][ T72] [ 366.770907][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 366.770907][ T72] neigh_parms_alloc+0x1e5/0x510 [ 366.770907][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 366.770907][ T72] ipv6_find_idev+0x102/0x170 [ 366.770907][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 366.770907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 366.770907][ T72] netlink_rcv_skb+0x130/0x360 [ 366.770907][ T72] netlink_unicast+0x449/0x710 [ 366.770907][ T72] netlink_sendmsg+0x723/0xbe0 [ 366.770907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 366.770907][ T72] ___sys_sendmsg+0xee/0x170 [ 366.770907][ T72] __sys_sendmsg+0xcd/0x170 [ 366.770907][ T72] do_syscall_64+0xc6/0x1e0 [ 366.770907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 366.770907][ T72] [ 369.958834][ T42] INFO: task modprobe:1060 blocked for more than 122 seconds. [ 369.959280][ T42] Not tainted 6.8.0-virtme #1 [ 369.959607][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 369.959867][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 369.960124][ T42] Call Trace: [ 369.960223][ T42] [ 369.960301][ T42] __schedule+0x705/0x1ac0 [ 369.960442][ T42] ? __pfx___schedule+0x10/0x10 [ 369.960578][ T42] ? schedule+0x1a5/0x210 [ 369.960686][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 369.960833][ T42] ? mark_lock+0x38/0x3e0 [ 369.960931][ T42] ? do_raw_spin_lock+0x131/0x270 [ 369.961061][ T42] ? schedule+0x1a5/0x210 [ 369.961161][ T42] schedule+0xdf/0x210 [ 369.961268][ T42] schedule_preempt_disabled+0x15/0x30 [ 369.961542][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 369.961687][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 369.961856][ T42] ? kasan_save_stack+0x34/0x50 [ 369.961985][ T42] ? kasan_save_stack+0x24/0x50 [ 369.962115][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 369.962248][ T42] ? lock_acquire+0x1c1/0x220 [ 369.962378][ T42] ? register_pernet_subsys+0x1a/0x50 [ 369.962511][ T42] down_write+0x1c9/0x200 [ 369.962609][ T42] ? __pfx_down_write+0x10/0x10 [ 369.962750][ T42] ? __pfx___lock_release+0x10/0x10 [ 369.962894][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 369.963119][ T42] register_pernet_subsys+0x1a/0x50 [ 369.963253][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 369.963435][ T42] do_one_initcall+0xc8/0x3f0 [ 369.963564][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 369.963693][ T42] ? __create_object+0x5e/0xb0 [ 369.963848][ T42] ? kasan_unpoison+0x27/0x60 [ 369.963996][ T42] do_init_module+0x233/0x740 [ 369.964137][ T42] load_module+0x16b5/0x2350 [ 369.964278][ T42] ? __pfx_load_module+0x10/0x10 [ 369.964407][ T42] ? kernel_read_file+0x3d2/0x520 [ 369.964542][ T42] ? kernel_read_file+0x300/0x520 [ 369.964672][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 369.964817][ T42] ? init_module_from_file+0xd2/0x130 [ 369.964945][ T42] init_module_from_file+0xd2/0x130 [ 369.965075][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 369.965234][ T42] ? __lock_release+0x103/0x460 [ 369.965360][ T42] ? idempotent_init_module+0x32a/0x620 [ 369.965500][ T42] ? idempotent_init_module+0x32a/0x620 [ 369.965629][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 369.965771][ T42] idempotent_init_module+0x342/0x620 [ 369.965900][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 369.966078][ T42] __x64_sys_finit_module+0xbe/0x130 [ 369.966217][ T42] do_syscall_64+0xc6/0x1e0 [ 369.966347][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 369.966503][ T42] RIP: 0033:0x7f69f7397e5d [ 369.966642][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 369.966858][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 369.967056][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 369.967246][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 369.967443][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 369.967630][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 369.967852][ T42] [ 369.967955][ T42] [ 369.967955][ T42] Showing all locks held in the system: [ 369.968144][ T42] 1 lock held by khungtaskd/42: [ 369.968273][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 369.968504][ T42] 2 locks held by kworker/u20:1/60: [ 369.968624][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 369.968885][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 369.969178][ T42] 3 locks held by kworker/u16:1/72: [ 369.969310][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 369.969562][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 369.969792][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 369.970023][ T42] 1 lock held by modprobe/1060: [ 369.970147][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 369.970396][ T42] [ 369.970462][ T42] ============================================= [ 369.970462][ T42] [ 377.126881][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 377.127486][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 377.127486][ T72] netdev_get_by_index+0x5e/0x80 [ 377.127486][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.127486][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.127486][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.127486][ T72] ipv6_add_addr+0x411/0x2000 [ 377.127486][ T72] inet6_addr_add+0x30e/0xa40 [ 377.127486][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.127486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.127486][ T72] netlink_rcv_skb+0x130/0x360 [ 377.127486][ T72] netlink_unicast+0x449/0x710 [ 377.127486][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.127486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.127486][ T72] ___sys_sendmsg+0xee/0x170 [ 377.127486][ T72] __sys_sendmsg+0xcd/0x170 [ 377.127486][ T72] do_syscall_64+0xc6/0x1e0 [ 377.127486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.127486][ T72] [ 377.130804][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 377.130804][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.130804][ T72] ipv6_find_idev+0x102/0x170 [ 377.130804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.130804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.130804][ T72] netlink_rcv_skb+0x130/0x360 [ 377.130804][ T72] netlink_unicast+0x449/0x710 [ 377.130804][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.130804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.130804][ T72] ___sys_sendmsg+0xee/0x170 [ 377.130804][ T72] __sys_sendmsg+0xcd/0x170 [ 377.130804][ T72] do_syscall_64+0xc6/0x1e0 [ 377.130804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.130804][ T72] [ 377.133403][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 377.133403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.133403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.133403][ T72] ipv6_find_idev+0x102/0x170 [ 377.133403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.133403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.133403][ T72] netlink_rcv_skb+0x130/0x360 [ 377.133403][ T72] netlink_unicast+0x449/0x710 [ 377.133403][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.133403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.133403][ T72] ___sys_sendmsg+0xee/0x170 [ 377.133403][ T72] __sys_sendmsg+0xcd/0x170 [ 377.133403][ T72] do_syscall_64+0xc6/0x1e0 [ 377.133403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.133403][ T72] [ 377.136116][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 377.136581][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 377.136581][ T72] netdev_get_by_index+0x5e/0x80 [ 377.136581][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.136581][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.136581][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.136581][ T72] ipv6_add_addr+0x411/0x2000 [ 377.136581][ T72] inet6_addr_add+0x30e/0xa40 [ 377.136581][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.136581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.136581][ T72] netlink_rcv_skb+0x130/0x360 [ 377.136581][ T72] netlink_unicast+0x449/0x710 [ 377.136581][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.136581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.136581][ T72] ___sys_sendmsg+0xee/0x170 [ 377.136581][ T72] __sys_sendmsg+0xcd/0x170 [ 377.136581][ T72] do_syscall_64+0xc6/0x1e0 [ 377.136581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.136581][ T72] [ 377.139746][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 377.139746][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.139746][ T72] ipv6_find_idev+0x102/0x170 [ 377.139746][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.139746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.139746][ T72] netlink_rcv_skb+0x130/0x360 [ 377.139746][ T72] netlink_unicast+0x449/0x710 [ 377.139746][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.139746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.139746][ T72] ___sys_sendmsg+0xee/0x170 [ 377.139746][ T72] __sys_sendmsg+0xcd/0x170 [ 377.139746][ T72] do_syscall_64+0xc6/0x1e0 [ 377.139746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.139746][ T72] [ 377.142303][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 377.142303][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.142303][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.142303][ T72] ipv6_find_idev+0x102/0x170 [ 377.142303][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.142303][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.142303][ T72] netlink_rcv_skb+0x130/0x360 [ 377.142303][ T72] netlink_unicast+0x449/0x710 [ 377.142303][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.142303][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.142303][ T72] ___sys_sendmsg+0xee/0x170 [ 377.142303][ T72] __sys_sendmsg+0xcd/0x170 [ 377.142303][ T72] do_syscall_64+0xc6/0x1e0 [ 377.142303][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.142303][ T72] [ 377.145113][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 377.145551][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 377.145551][ T72] netdev_get_by_index+0x5e/0x80 [ 377.145551][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.145551][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.145551][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.145551][ T72] ipv6_add_addr+0x411/0x2000 [ 377.145551][ T72] inet6_addr_add+0x30e/0xa40 [ 377.145551][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.145551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.145551][ T72] netlink_rcv_skb+0x130/0x360 [ 377.145551][ T72] netlink_unicast+0x449/0x710 [ 377.145551][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.145551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.145551][ T72] ___sys_sendmsg+0xee/0x170 [ 377.145551][ T72] __sys_sendmsg+0xcd/0x170 [ 377.145551][ T72] do_syscall_64+0xc6/0x1e0 [ 377.145551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.145551][ T72] [ 377.148875][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 377.148875][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.148875][ T72] ipv6_find_idev+0x102/0x170 [ 377.148875][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.148875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.148875][ T72] netlink_rcv_skb+0x130/0x360 [ 377.148875][ T72] netlink_unicast+0x449/0x710 [ 377.148875][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.148875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.148875][ T72] ___sys_sendmsg+0xee/0x170 [ 377.148875][ T72] __sys_sendmsg+0xcd/0x170 [ 377.148875][ T72] do_syscall_64+0xc6/0x1e0 [ 377.148875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.148875][ T72] [ 377.151432][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 377.151432][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.151432][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.151432][ T72] ipv6_find_idev+0x102/0x170 [ 377.151432][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.151432][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.151432][ T72] netlink_rcv_skb+0x130/0x360 [ 377.151432][ T72] netlink_unicast+0x449/0x710 [ 377.151432][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.151432][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.151432][ T72] ___sys_sendmsg+0xee/0x170 [ 377.151432][ T72] __sys_sendmsg+0xcd/0x170 [ 377.151432][ T72] do_syscall_64+0xc6/0x1e0 [ 377.151432][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.151432][ T72] [ 377.154243][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 377.154694][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 377.154694][ T72] netdev_get_by_index+0x5e/0x80 [ 377.154694][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.154694][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.154694][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.154694][ T72] ipv6_add_addr+0x411/0x2000 [ 377.154694][ T72] inet6_addr_add+0x30e/0xa40 [ 377.154694][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.154694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.154694][ T72] netlink_rcv_skb+0x130/0x360 [ 377.154694][ T72] netlink_unicast+0x449/0x710 [ 377.154694][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.154694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.154694][ T72] ___sys_sendmsg+0xee/0x170 [ 377.154694][ T72] __sys_sendmsg+0xcd/0x170 [ 377.154694][ T72] do_syscall_64+0xc6/0x1e0 [ 377.154694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.154694][ T72] [ 377.157971][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 377.157971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.157971][ T72] ipv6_find_idev+0x102/0x170 [ 377.157971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.157971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.157971][ T72] netlink_rcv_skb+0x130/0x360 [ 377.157971][ T72] netlink_unicast+0x449/0x710 [ 377.157971][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.157971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.157971][ T72] ___sys_sendmsg+0xee/0x170 [ 377.157971][ T72] __sys_sendmsg+0xcd/0x170 [ 377.157971][ T72] do_syscall_64+0xc6/0x1e0 [ 377.157971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.157971][ T72] [ 377.160558][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 377.160558][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.160558][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.160558][ T72] ipv6_find_idev+0x102/0x170 [ 377.160558][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.160558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.160558][ T72] netlink_rcv_skb+0x130/0x360 [ 377.160558][ T72] netlink_unicast+0x449/0x710 [ 377.160558][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.160558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.160558][ T72] ___sys_sendmsg+0xee/0x170 [ 377.160558][ T72] __sys_sendmsg+0xcd/0x170 [ 377.160558][ T72] do_syscall_64+0xc6/0x1e0 [ 377.160558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.160558][ T72] [ 377.163426][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 377.163969][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 377.163969][ T72] netdev_get_by_index+0x5e/0x80 [ 377.163969][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.163969][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.163969][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.163969][ T72] ipv6_add_addr+0x411/0x2000 [ 377.163969][ T72] inet6_addr_add+0x30e/0xa40 [ 377.163969][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.163969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.163969][ T72] netlink_rcv_skb+0x130/0x360 [ 377.163969][ T72] netlink_unicast+0x449/0x710 [ 377.163969][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.163969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.163969][ T72] ___sys_sendmsg+0xee/0x170 [ 377.163969][ T72] __sys_sendmsg+0xcd/0x170 [ 377.163969][ T72] do_syscall_64+0xc6/0x1e0 [ 377.163969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.163969][ T72] [ 377.167130][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 377.167130][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.167130][ T72] ipv6_find_idev+0x102/0x170 [ 377.167130][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.167130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.167130][ T72] netlink_rcv_skb+0x130/0x360 [ 377.167130][ T72] netlink_unicast+0x449/0x710 [ 377.167130][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.167130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.167130][ T72] ___sys_sendmsg+0xee/0x170 [ 377.167130][ T72] __sys_sendmsg+0xcd/0x170 [ 377.167130][ T72] do_syscall_64+0xc6/0x1e0 [ 377.167130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.167130][ T72] [ 377.169599][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 377.169599][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.169599][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.169599][ T72] ipv6_find_idev+0x102/0x170 [ 377.169599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.169599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.169599][ T72] netlink_rcv_skb+0x130/0x360 [ 377.169599][ T72] netlink_unicast+0x449/0x710 [ 377.169599][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.169599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.169599][ T72] ___sys_sendmsg+0xee/0x170 [ 377.169599][ T72] __sys_sendmsg+0xcd/0x170 [ 377.169599][ T72] do_syscall_64+0xc6/0x1e0 [ 377.169599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.169599][ T72] [ 377.172668][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 377.173199][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 377.173199][ T72] netdev_get_by_index+0x5e/0x80 [ 377.173199][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.173199][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.173199][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.173199][ T72] ipv6_add_addr+0x411/0x2000 [ 377.173199][ T72] inet6_addr_add+0x30e/0xa40 [ 377.173199][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.173199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.173199][ T72] netlink_rcv_skb+0x130/0x360 [ 377.173199][ T72] netlink_unicast+0x449/0x710 [ 377.173199][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.173199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.173199][ T72] ___sys_sendmsg+0xee/0x170 [ 377.173199][ T72] __sys_sendmsg+0xcd/0x170 [ 377.173199][ T72] do_syscall_64+0xc6/0x1e0 [ 377.173199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.173199][ T72] [ 377.176727][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 377.176727][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.176727][ T72] ipv6_find_idev+0x102/0x170 [ 377.176727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.176727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.176727][ T72] netlink_rcv_skb+0x130/0x360 [ 377.176727][ T72] netlink_unicast+0x449/0x710 [ 377.176727][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.176727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.176727][ T72] ___sys_sendmsg+0xee/0x170 [ 377.176727][ T72] __sys_sendmsg+0xcd/0x170 [ 377.176727][ T72] do_syscall_64+0xc6/0x1e0 [ 377.176727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.176727][ T72] [ 377.179401][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 377.179401][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.179401][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.179401][ T72] ipv6_find_idev+0x102/0x170 [ 377.179401][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.179401][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.179401][ T72] netlink_rcv_skb+0x130/0x360 [ 377.179401][ T72] netlink_unicast+0x449/0x710 [ 377.179401][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.179401][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.179401][ T72] ___sys_sendmsg+0xee/0x170 [ 377.179401][ T72] __sys_sendmsg+0xcd/0x170 [ 377.179401][ T72] do_syscall_64+0xc6/0x1e0 [ 377.179401][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.179401][ T72] [ 377.182455][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 377.182997][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 377.182997][ T72] netdev_get_by_index+0x5e/0x80 [ 377.182997][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.182997][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.182997][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.182997][ T72] ipv6_add_addr+0x411/0x2000 [ 377.182997][ T72] inet6_addr_add+0x30e/0xa40 [ 377.182997][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.182997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.182997][ T72] netlink_rcv_skb+0x130/0x360 [ 377.182997][ T72] netlink_unicast+0x449/0x710 [ 377.182997][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.182997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.182997][ T72] ___sys_sendmsg+0xee/0x170 [ 377.182997][ T72] __sys_sendmsg+0xcd/0x170 [ 377.182997][ T72] do_syscall_64+0xc6/0x1e0 [ 377.182997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.182997][ T72] [ 377.186532][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 377.186532][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.186532][ T72] ipv6_find_idev+0x102/0x170 [ 377.186532][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.186532][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.186532][ T72] netlink_rcv_skb+0x130/0x360 [ 377.186532][ T72] netlink_unicast+0x449/0x710 [ 377.186532][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.186532][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.186532][ T72] ___sys_sendmsg+0xee/0x170 [ 377.186532][ T72] __sys_sendmsg+0xcd/0x170 [ 377.186532][ T72] do_syscall_64+0xc6/0x1e0 [ 377.186532][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.186532][ T72] [ 377.189204][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 377.189204][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.189204][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.189204][ T72] ipv6_find_idev+0x102/0x170 [ 377.189204][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.189204][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.189204][ T72] netlink_rcv_skb+0x130/0x360 [ 377.189204][ T72] netlink_unicast+0x449/0x710 [ 377.189204][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.189204][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.189204][ T72] ___sys_sendmsg+0xee/0x170 [ 377.189204][ T72] __sys_sendmsg+0xcd/0x170 [ 377.189204][ T72] do_syscall_64+0xc6/0x1e0 [ 377.189204][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.189204][ T72] [ 377.192179][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 377.192604][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 377.192604][ T72] netdev_get_by_index+0x5e/0x80 [ 377.192604][ T72] fib6_nh_init+0x3d8/0x15b0 [ 377.192604][ T72] ip6_route_info_create+0xf18/0x17d0 [ 377.192604][ T72] addrconf_f6i_alloc+0x244/0x410 [ 377.192604][ T72] ipv6_add_addr+0x411/0x2000 [ 377.192604][ T72] inet6_addr_add+0x30e/0xa40 [ 377.192604][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 377.192604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.192604][ T72] netlink_rcv_skb+0x130/0x360 [ 377.192604][ T72] netlink_unicast+0x449/0x710 [ 377.192604][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.192604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.192604][ T72] ___sys_sendmsg+0xee/0x170 [ 377.192604][ T72] __sys_sendmsg+0xcd/0x170 [ 377.192604][ T72] do_syscall_64+0xc6/0x1e0 [ 377.192604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.192604][ T72] [ 377.195992][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 377.195992][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 377.195992][ T72] ipv6_find_idev+0x102/0x170 [ 377.195992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.195992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.195992][ T72] netlink_rcv_skb+0x130/0x360 [ 377.195992][ T72] netlink_unicast+0x449/0x710 [ 377.195992][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.195992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.195992][ T72] ___sys_sendmsg+0xee/0x170 [ 377.195992][ T72] __sys_sendmsg+0xcd/0x170 [ 377.195992][ T72] do_syscall_64+0xc6/0x1e0 [ 377.195992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.195992][ T72] [ 377.198586][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 377.198586][ T72] neigh_parms_alloc+0x1e5/0x510 [ 377.198586][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 377.198586][ T72] ipv6_find_idev+0x102/0x170 [ 377.198586][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 377.198586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 377.198586][ T72] netlink_rcv_skb+0x130/0x360 [ 377.198586][ T72] netlink_unicast+0x449/0x710 [ 377.198586][ T72] netlink_sendmsg+0x723/0xbe0 [ 377.198586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 377.198586][ T72] ___sys_sendmsg+0xee/0x170 [ 377.198586][ T72] __sys_sendmsg+0xcd/0x170 [ 377.198586][ T72] do_syscall_64+0xc6/0x1e0 [ 377.198586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 377.198586][ T72] [ 387.334826][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 387.335296][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 387.335296][ T72] netdev_get_by_index+0x5e/0x80 [ 387.335296][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.335296][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.335296][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.335296][ T72] ipv6_add_addr+0x411/0x2000 [ 387.335296][ T72] inet6_addr_add+0x30e/0xa40 [ 387.335296][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.335296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.335296][ T72] netlink_rcv_skb+0x130/0x360 [ 387.335296][ T72] netlink_unicast+0x449/0x710 [ 387.335296][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.335296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.335296][ T72] ___sys_sendmsg+0xee/0x170 [ 387.335296][ T72] __sys_sendmsg+0xcd/0x170 [ 387.335296][ T72] do_syscall_64+0xc6/0x1e0 [ 387.335296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.335296][ T72] [ 387.337290][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 387.337290][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.337290][ T72] ipv6_find_idev+0x102/0x170 [ 387.337290][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.337290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.337290][ T72] netlink_rcv_skb+0x130/0x360 [ 387.337290][ T72] netlink_unicast+0x449/0x710 [ 387.337290][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.337290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.337290][ T72] ___sys_sendmsg+0xee/0x170 [ 387.337290][ T72] __sys_sendmsg+0xcd/0x170 [ 387.337290][ T72] do_syscall_64+0xc6/0x1e0 [ 387.337290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.337290][ T72] [ 387.338812][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 387.338812][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.338812][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.338812][ T72] ipv6_find_idev+0x102/0x170 [ 387.338812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.338812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.338812][ T72] netlink_rcv_skb+0x130/0x360 [ 387.338812][ T72] netlink_unicast+0x449/0x710 [ 387.338812][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.338812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.338812][ T72] ___sys_sendmsg+0xee/0x170 [ 387.338812][ T72] __sys_sendmsg+0xcd/0x170 [ 387.338812][ T72] do_syscall_64+0xc6/0x1e0 [ 387.338812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.338812][ T72] [ 387.340483][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 387.340757][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 387.340757][ T72] netdev_get_by_index+0x5e/0x80 [ 387.340757][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.340757][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.340757][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.340757][ T72] ipv6_add_addr+0x411/0x2000 [ 387.340757][ T72] inet6_addr_add+0x30e/0xa40 [ 387.340757][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.340757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.340757][ T72] netlink_rcv_skb+0x130/0x360 [ 387.340757][ T72] netlink_unicast+0x449/0x710 [ 387.340757][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.340757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.340757][ T72] ___sys_sendmsg+0xee/0x170 [ 387.340757][ T72] __sys_sendmsg+0xcd/0x170 [ 387.340757][ T72] do_syscall_64+0xc6/0x1e0 [ 387.340757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.340757][ T72] [ 387.342724][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 387.342724][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.342724][ T72] ipv6_find_idev+0x102/0x170 [ 387.342724][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.342724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.342724][ T72] netlink_rcv_skb+0x130/0x360 [ 387.342724][ T72] netlink_unicast+0x449/0x710 [ 387.342724][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.342724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.342724][ T72] ___sys_sendmsg+0xee/0x170 [ 387.342724][ T72] __sys_sendmsg+0xcd/0x170 [ 387.342724][ T72] do_syscall_64+0xc6/0x1e0 [ 387.342724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.342724][ T72] [ 387.344242][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 387.344242][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.344242][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.344242][ T72] ipv6_find_idev+0x102/0x170 [ 387.344242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.344242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.344242][ T72] netlink_rcv_skb+0x130/0x360 [ 387.344242][ T72] netlink_unicast+0x449/0x710 [ 387.344242][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.344242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.344242][ T72] ___sys_sendmsg+0xee/0x170 [ 387.344242][ T72] __sys_sendmsg+0xcd/0x170 [ 387.344242][ T72] do_syscall_64+0xc6/0x1e0 [ 387.344242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.344242][ T72] [ 387.345902][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 387.346185][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 387.346185][ T72] netdev_get_by_index+0x5e/0x80 [ 387.346185][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.346185][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.346185][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.346185][ T72] ipv6_add_addr+0x411/0x2000 [ 387.346185][ T72] inet6_addr_add+0x30e/0xa40 [ 387.346185][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.346185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.346185][ T72] netlink_rcv_skb+0x130/0x360 [ 387.346185][ T72] netlink_unicast+0x449/0x710 [ 387.346185][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.346185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.346185][ T72] ___sys_sendmsg+0xee/0x170 [ 387.346185][ T72] __sys_sendmsg+0xcd/0x170 [ 387.346185][ T72] do_syscall_64+0xc6/0x1e0 [ 387.346185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.346185][ T72] [ 387.348160][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 387.348160][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.348160][ T72] ipv6_find_idev+0x102/0x170 [ 387.348160][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.348160][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.348160][ T72] netlink_rcv_skb+0x130/0x360 [ 387.348160][ T72] netlink_unicast+0x449/0x710 [ 387.348160][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.348160][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.348160][ T72] ___sys_sendmsg+0xee/0x170 [ 387.348160][ T72] __sys_sendmsg+0xcd/0x170 [ 387.348160][ T72] do_syscall_64+0xc6/0x1e0 [ 387.348160][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.348160][ T72] [ 387.349688][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 387.349688][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.349688][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.349688][ T72] ipv6_find_idev+0x102/0x170 [ 387.349688][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.349688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.349688][ T72] netlink_rcv_skb+0x130/0x360 [ 387.349688][ T72] netlink_unicast+0x449/0x710 [ 387.349688][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.349688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.349688][ T72] ___sys_sendmsg+0xee/0x170 [ 387.349688][ T72] __sys_sendmsg+0xcd/0x170 [ 387.349688][ T72] do_syscall_64+0xc6/0x1e0 [ 387.349688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.349688][ T72] [ 387.351359][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 387.351617][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 387.351617][ T72] netdev_get_by_index+0x5e/0x80 [ 387.351617][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.351617][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.351617][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.351617][ T72] ipv6_add_addr+0x411/0x2000 [ 387.351617][ T72] inet6_addr_add+0x30e/0xa40 [ 387.351617][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.351617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.351617][ T72] netlink_rcv_skb+0x130/0x360 [ 387.351617][ T72] netlink_unicast+0x449/0x710 [ 387.351617][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.351617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.351617][ T72] ___sys_sendmsg+0xee/0x170 [ 387.351617][ T72] __sys_sendmsg+0xcd/0x170 [ 387.351617][ T72] do_syscall_64+0xc6/0x1e0 [ 387.351617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.351617][ T72] [ 387.353583][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 387.353583][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.353583][ T72] ipv6_find_idev+0x102/0x170 [ 387.353583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.353583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.353583][ T72] netlink_rcv_skb+0x130/0x360 [ 387.353583][ T72] netlink_unicast+0x449/0x710 [ 387.353583][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.353583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.353583][ T72] ___sys_sendmsg+0xee/0x170 [ 387.353583][ T72] __sys_sendmsg+0xcd/0x170 [ 387.353583][ T72] do_syscall_64+0xc6/0x1e0 [ 387.353583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.353583][ T72] [ 387.355098][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 387.355098][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.355098][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.355098][ T72] ipv6_find_idev+0x102/0x170 [ 387.355098][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.355098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.355098][ T72] netlink_rcv_skb+0x130/0x360 [ 387.355098][ T72] netlink_unicast+0x449/0x710 [ 387.355098][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.355098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.355098][ T72] ___sys_sendmsg+0xee/0x170 [ 387.355098][ T72] __sys_sendmsg+0xcd/0x170 [ 387.355098][ T72] do_syscall_64+0xc6/0x1e0 [ 387.355098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.355098][ T72] [ 387.357161][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 387.357420][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 387.357420][ T72] netdev_get_by_index+0x5e/0x80 [ 387.357420][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.357420][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.357420][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.357420][ T72] ipv6_add_addr+0x411/0x2000 [ 387.357420][ T72] inet6_addr_add+0x30e/0xa40 [ 387.357420][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.357420][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.357420][ T72] netlink_rcv_skb+0x130/0x360 [ 387.357420][ T72] netlink_unicast+0x449/0x710 [ 387.357420][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.357420][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.357420][ T72] ___sys_sendmsg+0xee/0x170 [ 387.357420][ T72] __sys_sendmsg+0xcd/0x170 [ 387.357420][ T72] do_syscall_64+0xc6/0x1e0 [ 387.357420][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.357420][ T72] [ 387.359408][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 387.359408][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.359408][ T72] ipv6_find_idev+0x102/0x170 [ 387.359408][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.359408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.359408][ T72] netlink_rcv_skb+0x130/0x360 [ 387.359408][ T72] netlink_unicast+0x449/0x710 [ 387.359408][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.359408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.359408][ T72] ___sys_sendmsg+0xee/0x170 [ 387.359408][ T72] __sys_sendmsg+0xcd/0x170 [ 387.359408][ T72] do_syscall_64+0xc6/0x1e0 [ 387.359408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.359408][ T72] [ 387.360927][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 387.360927][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.360927][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.360927][ T72] ipv6_find_idev+0x102/0x170 [ 387.360927][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.360927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.360927][ T72] netlink_rcv_skb+0x130/0x360 [ 387.360927][ T72] netlink_unicast+0x449/0x710 [ 387.360927][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.360927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.360927][ T72] ___sys_sendmsg+0xee/0x170 [ 387.360927][ T72] __sys_sendmsg+0xcd/0x170 [ 387.360927][ T72] do_syscall_64+0xc6/0x1e0 [ 387.360927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.360927][ T72] [ 387.362638][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 387.362960][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 387.362960][ T72] netdev_get_by_index+0x5e/0x80 [ 387.362960][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.362960][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.362960][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.362960][ T72] ipv6_add_addr+0x411/0x2000 [ 387.362960][ T72] inet6_addr_add+0x30e/0xa40 [ 387.362960][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.362960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.362960][ T72] netlink_rcv_skb+0x130/0x360 [ 387.362960][ T72] netlink_unicast+0x449/0x710 [ 387.362960][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.362960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.362960][ T72] ___sys_sendmsg+0xee/0x170 [ 387.362960][ T72] __sys_sendmsg+0xcd/0x170 [ 387.362960][ T72] do_syscall_64+0xc6/0x1e0 [ 387.362960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.362960][ T72] [ 387.365078][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 387.365078][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.365078][ T72] ipv6_find_idev+0x102/0x170 [ 387.365078][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.365078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.365078][ T72] netlink_rcv_skb+0x130/0x360 [ 387.365078][ T72] netlink_unicast+0x449/0x710 [ 387.365078][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.365078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.365078][ T72] ___sys_sendmsg+0xee/0x170 [ 387.365078][ T72] __sys_sendmsg+0xcd/0x170 [ 387.365078][ T72] do_syscall_64+0xc6/0x1e0 [ 387.365078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.365078][ T72] [ 387.366776][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 387.366776][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.366776][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.366776][ T72] ipv6_find_idev+0x102/0x170 [ 387.366776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.366776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.366776][ T72] netlink_rcv_skb+0x130/0x360 [ 387.366776][ T72] netlink_unicast+0x449/0x710 [ 387.366776][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.366776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.366776][ T72] ___sys_sendmsg+0xee/0x170 [ 387.366776][ T72] __sys_sendmsg+0xcd/0x170 [ 387.366776][ T72] do_syscall_64+0xc6/0x1e0 [ 387.366776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.366776][ T72] [ 387.368661][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 387.368978][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 387.368978][ T72] netdev_get_by_index+0x5e/0x80 [ 387.368978][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.368978][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.368978][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.368978][ T72] ipv6_add_addr+0x411/0x2000 [ 387.368978][ T72] inet6_addr_add+0x30e/0xa40 [ 387.368978][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.368978][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.368978][ T72] netlink_rcv_skb+0x130/0x360 [ 387.368978][ T72] netlink_unicast+0x449/0x710 [ 387.368978][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.368978][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.368978][ T72] ___sys_sendmsg+0xee/0x170 [ 387.368978][ T72] __sys_sendmsg+0xcd/0x170 [ 387.368978][ T72] do_syscall_64+0xc6/0x1e0 [ 387.368978][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.368978][ T72] [ 387.371217][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 387.371217][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.371217][ T72] ipv6_find_idev+0x102/0x170 [ 387.371217][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.371217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.371217][ T72] netlink_rcv_skb+0x130/0x360 [ 387.371217][ T72] netlink_unicast+0x449/0x710 [ 387.371217][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.371217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.371217][ T72] ___sys_sendmsg+0xee/0x170 [ 387.371217][ T72] __sys_sendmsg+0xcd/0x170 [ 387.371217][ T72] do_syscall_64+0xc6/0x1e0 [ 387.371217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.371217][ T72] [ 387.372916][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 387.372916][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.372916][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.372916][ T72] ipv6_find_idev+0x102/0x170 [ 387.372916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.372916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.372916][ T72] netlink_rcv_skb+0x130/0x360 [ 387.372916][ T72] netlink_unicast+0x449/0x710 [ 387.372916][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.372916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.372916][ T72] ___sys_sendmsg+0xee/0x170 [ 387.372916][ T72] __sys_sendmsg+0xcd/0x170 [ 387.372916][ T72] do_syscall_64+0xc6/0x1e0 [ 387.372916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.372916][ T72] [ 387.374820][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 387.375088][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 387.375088][ T72] netdev_get_by_index+0x5e/0x80 [ 387.375088][ T72] fib6_nh_init+0x3d8/0x15b0 [ 387.375088][ T72] ip6_route_info_create+0xf18/0x17d0 [ 387.375088][ T72] addrconf_f6i_alloc+0x244/0x410 [ 387.375088][ T72] ipv6_add_addr+0x411/0x2000 [ 387.375088][ T72] inet6_addr_add+0x30e/0xa40 [ 387.375088][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 387.375088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.375088][ T72] netlink_rcv_skb+0x130/0x360 [ 387.375088][ T72] netlink_unicast+0x449/0x710 [ 387.375088][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.375088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.375088][ T72] ___sys_sendmsg+0xee/0x170 [ 387.375088][ T72] __sys_sendmsg+0xcd/0x170 [ 387.375088][ T72] do_syscall_64+0xc6/0x1e0 [ 387.375088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.375088][ T72] [ 387.377331][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 387.377331][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 387.377331][ T72] ipv6_find_idev+0x102/0x170 [ 387.377331][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.377331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.377331][ T72] netlink_rcv_skb+0x130/0x360 [ 387.377331][ T72] netlink_unicast+0x449/0x710 [ 387.377331][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.377331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.377331][ T72] ___sys_sendmsg+0xee/0x170 [ 387.377331][ T72] __sys_sendmsg+0xcd/0x170 [ 387.377331][ T72] do_syscall_64+0xc6/0x1e0 [ 387.377331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.377331][ T72] [ 387.379031][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 387.379031][ T72] neigh_parms_alloc+0x1e5/0x510 [ 387.379031][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 387.379031][ T72] ipv6_find_idev+0x102/0x170 [ 387.379031][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 387.379031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 387.379031][ T72] netlink_rcv_skb+0x130/0x360 [ 387.379031][ T72] netlink_unicast+0x449/0x710 [ 387.379031][ T72] netlink_sendmsg+0x723/0xbe0 [ 387.379031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 387.379031][ T72] ___sys_sendmsg+0xee/0x170 [ 387.379031][ T72] __sys_sendmsg+0xcd/0x170 [ 387.379031][ T72] do_syscall_64+0xc6/0x1e0 [ 387.379031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 387.379031][ T72] [ 397.622900][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 397.623325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 397.623325][ T72] netdev_get_by_index+0x5e/0x80 [ 397.623325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.623325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.623325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.623325][ T72] ipv6_add_addr+0x411/0x2000 [ 397.623325][ T72] inet6_addr_add+0x30e/0xa40 [ 397.623325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.623325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.623325][ T72] netlink_rcv_skb+0x130/0x360 [ 397.623325][ T72] netlink_unicast+0x449/0x710 [ 397.623325][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.623325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.623325][ T72] ___sys_sendmsg+0xee/0x170 [ 397.623325][ T72] __sys_sendmsg+0xcd/0x170 [ 397.623325][ T72] do_syscall_64+0xc6/0x1e0 [ 397.623325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.623325][ T72] [ 397.625505][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 397.625505][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.625505][ T72] ipv6_find_idev+0x102/0x170 [ 397.625505][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.625505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.625505][ T72] netlink_rcv_skb+0x130/0x360 [ 397.625505][ T72] netlink_unicast+0x449/0x710 [ 397.625505][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.625505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.625505][ T72] ___sys_sendmsg+0xee/0x170 [ 397.625505][ T72] __sys_sendmsg+0xcd/0x170 [ 397.625505][ T72] do_syscall_64+0xc6/0x1e0 [ 397.625505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.625505][ T72] [ 397.627203][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 397.627203][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.627203][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.627203][ T72] ipv6_find_idev+0x102/0x170 [ 397.627203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.627203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.627203][ T72] netlink_rcv_skb+0x130/0x360 [ 397.627203][ T72] netlink_unicast+0x449/0x710 [ 397.627203][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.627203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.627203][ T72] ___sys_sendmsg+0xee/0x170 [ 397.627203][ T72] __sys_sendmsg+0xcd/0x170 [ 397.627203][ T72] do_syscall_64+0xc6/0x1e0 [ 397.627203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.627203][ T72] [ 397.629092][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 397.629397][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 397.629397][ T72] netdev_get_by_index+0x5e/0x80 [ 397.629397][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.629397][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.629397][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.629397][ T72] ipv6_add_addr+0x411/0x2000 [ 397.629397][ T72] inet6_addr_add+0x30e/0xa40 [ 397.629397][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.629397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.629397][ T72] netlink_rcv_skb+0x130/0x360 [ 397.629397][ T72] netlink_unicast+0x449/0x710 [ 397.629397][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.629397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.629397][ T72] ___sys_sendmsg+0xee/0x170 [ 397.629397][ T72] __sys_sendmsg+0xcd/0x170 [ 397.629397][ T72] do_syscall_64+0xc6/0x1e0 [ 397.629397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.629397][ T72] [ 397.631601][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 397.631601][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.631601][ T72] ipv6_find_idev+0x102/0x170 [ 397.631601][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.631601][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.631601][ T72] netlink_rcv_skb+0x130/0x360 [ 397.631601][ T72] netlink_unicast+0x449/0x710 [ 397.631601][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.631601][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.631601][ T72] ___sys_sendmsg+0xee/0x170 [ 397.631601][ T72] __sys_sendmsg+0xcd/0x170 [ 397.631601][ T72] do_syscall_64+0xc6/0x1e0 [ 397.631601][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.631601][ T72] [ 397.633298][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 397.633298][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.633298][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.633298][ T72] ipv6_find_idev+0x102/0x170 [ 397.633298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.633298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.633298][ T72] netlink_rcv_skb+0x130/0x360 [ 397.633298][ T72] netlink_unicast+0x449/0x710 [ 397.633298][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.633298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.633298][ T72] ___sys_sendmsg+0xee/0x170 [ 397.633298][ T72] __sys_sendmsg+0xcd/0x170 [ 397.633298][ T72] do_syscall_64+0xc6/0x1e0 [ 397.633298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.633298][ T72] [ 397.635171][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 397.635460][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 397.635460][ T72] netdev_get_by_index+0x5e/0x80 [ 397.635460][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.635460][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.635460][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.635460][ T72] ipv6_add_addr+0x411/0x2000 [ 397.635460][ T72] inet6_addr_add+0x30e/0xa40 [ 397.635460][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.635460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.635460][ T72] netlink_rcv_skb+0x130/0x360 [ 397.635460][ T72] netlink_unicast+0x449/0x710 [ 397.635460][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.635460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.635460][ T72] ___sys_sendmsg+0xee/0x170 [ 397.635460][ T72] __sys_sendmsg+0xcd/0x170 [ 397.635460][ T72] do_syscall_64+0xc6/0x1e0 [ 397.635460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.635460][ T72] [ 397.637709][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 397.637709][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.637709][ T72] ipv6_find_idev+0x102/0x170 [ 397.637709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.637709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.637709][ T72] netlink_rcv_skb+0x130/0x360 [ 397.637709][ T72] netlink_unicast+0x449/0x710 [ 397.637709][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.637709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.637709][ T72] ___sys_sendmsg+0xee/0x170 [ 397.637709][ T72] __sys_sendmsg+0xcd/0x170 [ 397.637709][ T72] do_syscall_64+0xc6/0x1e0 [ 397.637709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.637709][ T72] [ 397.639454][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 397.639454][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.639454][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.639454][ T72] ipv6_find_idev+0x102/0x170 [ 397.639454][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.639454][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.639454][ T72] netlink_rcv_skb+0x130/0x360 [ 397.639454][ T72] netlink_unicast+0x449/0x710 [ 397.639454][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.639454][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.639454][ T72] ___sys_sendmsg+0xee/0x170 [ 397.639454][ T72] __sys_sendmsg+0xcd/0x170 [ 397.639454][ T72] do_syscall_64+0xc6/0x1e0 [ 397.639454][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.639454][ T72] [ 397.641328][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 397.641621][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 397.641621][ T72] netdev_get_by_index+0x5e/0x80 [ 397.641621][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.641621][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.641621][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.641621][ T72] ipv6_add_addr+0x411/0x2000 [ 397.641621][ T72] inet6_addr_add+0x30e/0xa40 [ 397.641621][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.641621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.641621][ T72] netlink_rcv_skb+0x130/0x360 [ 397.641621][ T72] netlink_unicast+0x449/0x710 [ 397.641621][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.641621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.641621][ T72] ___sys_sendmsg+0xee/0x170 [ 397.641621][ T72] __sys_sendmsg+0xcd/0x170 [ 397.641621][ T72] do_syscall_64+0xc6/0x1e0 [ 397.641621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.641621][ T72] [ 397.643827][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 397.643827][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.643827][ T72] ipv6_find_idev+0x102/0x170 [ 397.643827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.643827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.643827][ T72] netlink_rcv_skb+0x130/0x360 [ 397.643827][ T72] netlink_unicast+0x449/0x710 [ 397.643827][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.643827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.643827][ T72] ___sys_sendmsg+0xee/0x170 [ 397.643827][ T72] __sys_sendmsg+0xcd/0x170 [ 397.643827][ T72] do_syscall_64+0xc6/0x1e0 [ 397.643827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.643827][ T72] [ 397.645517][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 397.645517][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.645517][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.645517][ T72] ipv6_find_idev+0x102/0x170 [ 397.645517][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.645517][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.645517][ T72] netlink_rcv_skb+0x130/0x360 [ 397.645517][ T72] netlink_unicast+0x449/0x710 [ 397.645517][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.645517][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.645517][ T72] ___sys_sendmsg+0xee/0x170 [ 397.645517][ T72] __sys_sendmsg+0xcd/0x170 [ 397.645517][ T72] do_syscall_64+0xc6/0x1e0 [ 397.645517][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.645517][ T72] [ 397.647783][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 397.648383][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 397.648383][ T72] netdev_get_by_index+0x5e/0x80 [ 397.648383][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.648383][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.648383][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.648383][ T72] ipv6_add_addr+0x411/0x2000 [ 397.648383][ T72] inet6_addr_add+0x30e/0xa40 [ 397.648383][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.648383][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.648383][ T72] netlink_rcv_skb+0x130/0x360 [ 397.648383][ T72] netlink_unicast+0x449/0x710 [ 397.648383][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.648383][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.648383][ T72] ___sys_sendmsg+0xee/0x170 [ 397.648383][ T72] __sys_sendmsg+0xcd/0x170 [ 397.648383][ T72] do_syscall_64+0xc6/0x1e0 [ 397.648383][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.648383][ T72] [ 397.650460][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 397.650460][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.650460][ T72] ipv6_find_idev+0x102/0x170 [ 397.650460][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.650460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.650460][ T72] netlink_rcv_skb+0x130/0x360 [ 397.650460][ T72] netlink_unicast+0x449/0x710 [ 397.650460][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.650460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.650460][ T72] ___sys_sendmsg+0xee/0x170 [ 397.650460][ T72] __sys_sendmsg+0xcd/0x170 [ 397.650460][ T72] do_syscall_64+0xc6/0x1e0 [ 397.650460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.650460][ T72] [ 397.652006][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 397.652006][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.652006][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.652006][ T72] ipv6_find_idev+0x102/0x170 [ 397.652006][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.652006][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.652006][ T72] netlink_rcv_skb+0x130/0x360 [ 397.652006][ T72] netlink_unicast+0x449/0x710 [ 397.652006][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.652006][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.652006][ T72] ___sys_sendmsg+0xee/0x170 [ 397.652006][ T72] __sys_sendmsg+0xcd/0x170 [ 397.652006][ T72] do_syscall_64+0xc6/0x1e0 [ 397.652006][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.652006][ T72] [ 397.653760][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 397.654084][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 397.654084][ T72] netdev_get_by_index+0x5e/0x80 [ 397.654084][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.654084][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.654084][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.654084][ T72] ipv6_add_addr+0x411/0x2000 [ 397.654084][ T72] inet6_addr_add+0x30e/0xa40 [ 397.654084][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.654084][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.654084][ T72] netlink_rcv_skb+0x130/0x360 [ 397.654084][ T72] netlink_unicast+0x449/0x710 [ 397.654084][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.654084][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.654084][ T72] ___sys_sendmsg+0xee/0x170 [ 397.654084][ T72] __sys_sendmsg+0xcd/0x170 [ 397.654084][ T72] do_syscall_64+0xc6/0x1e0 [ 397.654084][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.654084][ T72] [ 397.656104][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 397.656104][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.656104][ T72] ipv6_find_idev+0x102/0x170 [ 397.656104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.656104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.656104][ T72] netlink_rcv_skb+0x130/0x360 [ 397.656104][ T72] netlink_unicast+0x449/0x710 [ 397.656104][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.656104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.656104][ T72] ___sys_sendmsg+0xee/0x170 [ 397.656104][ T72] __sys_sendmsg+0xcd/0x170 [ 397.656104][ T72] do_syscall_64+0xc6/0x1e0 [ 397.656104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.656104][ T72] [ 397.657661][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 397.657661][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.657661][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.657661][ T72] ipv6_find_idev+0x102/0x170 [ 397.657661][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.657661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.657661][ T72] netlink_rcv_skb+0x130/0x360 [ 397.657661][ T72] netlink_unicast+0x449/0x710 [ 397.657661][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.657661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.657661][ T72] ___sys_sendmsg+0xee/0x170 [ 397.657661][ T72] __sys_sendmsg+0xcd/0x170 [ 397.657661][ T72] do_syscall_64+0xc6/0x1e0 [ 397.657661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.657661][ T72] [ 397.659650][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 397.659981][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 397.659981][ T72] netdev_get_by_index+0x5e/0x80 [ 397.659981][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.659981][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.659981][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.659981][ T72] ipv6_add_addr+0x411/0x2000 [ 397.659981][ T72] inet6_addr_add+0x30e/0xa40 [ 397.659981][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.659981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.659981][ T72] netlink_rcv_skb+0x130/0x360 [ 397.659981][ T72] netlink_unicast+0x449/0x710 [ 397.659981][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.659981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.659981][ T72] ___sys_sendmsg+0xee/0x170 [ 397.659981][ T72] __sys_sendmsg+0xcd/0x170 [ 397.659981][ T72] do_syscall_64+0xc6/0x1e0 [ 397.659981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.659981][ T72] [ 397.662225][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 397.662225][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.662225][ T72] ipv6_find_idev+0x102/0x170 [ 397.662225][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.662225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.662225][ T72] netlink_rcv_skb+0x130/0x360 [ 397.662225][ T72] netlink_unicast+0x449/0x710 [ 397.662225][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.662225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.662225][ T72] ___sys_sendmsg+0xee/0x170 [ 397.662225][ T72] __sys_sendmsg+0xcd/0x170 [ 397.662225][ T72] do_syscall_64+0xc6/0x1e0 [ 397.662225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.662225][ T72] [ 397.663943][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 397.663943][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.663943][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.663943][ T72] ipv6_find_idev+0x102/0x170 [ 397.663943][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.663943][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.663943][ T72] netlink_rcv_skb+0x130/0x360 [ 397.663943][ T72] netlink_unicast+0x449/0x710 [ 397.663943][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.663943][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.663943][ T72] ___sys_sendmsg+0xee/0x170 [ 397.663943][ T72] __sys_sendmsg+0xcd/0x170 [ 397.663943][ T72] do_syscall_64+0xc6/0x1e0 [ 397.663943][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.663943][ T72] [ 397.665946][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 397.666271][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 397.666271][ T72] netdev_get_by_index+0x5e/0x80 [ 397.666271][ T72] fib6_nh_init+0x3d8/0x15b0 [ 397.666271][ T72] ip6_route_info_create+0xf18/0x17d0 [ 397.666271][ T72] addrconf_f6i_alloc+0x244/0x410 [ 397.666271][ T72] ipv6_add_addr+0x411/0x2000 [ 397.666271][ T72] inet6_addr_add+0x30e/0xa40 [ 397.666271][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 397.666271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.666271][ T72] netlink_rcv_skb+0x130/0x360 [ 397.666271][ T72] netlink_unicast+0x449/0x710 [ 397.666271][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.666271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.666271][ T72] ___sys_sendmsg+0xee/0x170 [ 397.666271][ T72] __sys_sendmsg+0xcd/0x170 [ 397.666271][ T72] do_syscall_64+0xc6/0x1e0 [ 397.666271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.666271][ T72] [ 397.668445][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 397.668445][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 397.668445][ T72] ipv6_find_idev+0x102/0x170 [ 397.668445][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.668445][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.668445][ T72] netlink_rcv_skb+0x130/0x360 [ 397.668445][ T72] netlink_unicast+0x449/0x710 [ 397.668445][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.668445][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.668445][ T72] ___sys_sendmsg+0xee/0x170 [ 397.668445][ T72] __sys_sendmsg+0xcd/0x170 [ 397.668445][ T72] do_syscall_64+0xc6/0x1e0 [ 397.668445][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.668445][ T72] [ 397.670199][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 397.670199][ T72] neigh_parms_alloc+0x1e5/0x510 [ 397.670199][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 397.670199][ T72] ipv6_find_idev+0x102/0x170 [ 397.670199][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 397.670199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 397.670199][ T72] netlink_rcv_skb+0x130/0x360 [ 397.670199][ T72] netlink_unicast+0x449/0x710 [ 397.670199][ T72] netlink_sendmsg+0x723/0xbe0 [ 397.670199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 397.670199][ T72] ___sys_sendmsg+0xee/0x170 [ 397.670199][ T72] __sys_sendmsg+0xcd/0x170 [ 397.670199][ T72] do_syscall_64+0xc6/0x1e0 [ 397.670199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 397.670199][ T72] [ 407.862813][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 407.863291][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 407.863291][ T72] netdev_get_by_index+0x5e/0x80 [ 407.863291][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.863291][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.863291][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.863291][ T72] ipv6_add_addr+0x411/0x2000 [ 407.863291][ T72] inet6_addr_add+0x30e/0xa40 [ 407.863291][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.863291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.863291][ T72] netlink_rcv_skb+0x130/0x360 [ 407.863291][ T72] netlink_unicast+0x449/0x710 [ 407.863291][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.863291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.863291][ T72] ___sys_sendmsg+0xee/0x170 [ 407.863291][ T72] __sys_sendmsg+0xcd/0x170 [ 407.863291][ T72] do_syscall_64+0xc6/0x1e0 [ 407.863291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.863291][ T72] [ 407.865510][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 407.865510][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.865510][ T72] ipv6_find_idev+0x102/0x170 [ 407.865510][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.865510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.865510][ T72] netlink_rcv_skb+0x130/0x360 [ 407.865510][ T72] netlink_unicast+0x449/0x710 [ 407.865510][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.865510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.865510][ T72] ___sys_sendmsg+0xee/0x170 [ 407.865510][ T72] __sys_sendmsg+0xcd/0x170 [ 407.865510][ T72] do_syscall_64+0xc6/0x1e0 [ 407.865510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.865510][ T72] [ 407.867210][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 407.867210][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.867210][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.867210][ T72] ipv6_find_idev+0x102/0x170 [ 407.867210][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.867210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.867210][ T72] netlink_rcv_skb+0x130/0x360 [ 407.867210][ T72] netlink_unicast+0x449/0x710 [ 407.867210][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.867210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.867210][ T72] ___sys_sendmsg+0xee/0x170 [ 407.867210][ T72] __sys_sendmsg+0xcd/0x170 [ 407.867210][ T72] do_syscall_64+0xc6/0x1e0 [ 407.867210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.867210][ T72] [ 407.869103][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 407.869410][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 407.869410][ T72] netdev_get_by_index+0x5e/0x80 [ 407.869410][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.869410][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.869410][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.869410][ T72] ipv6_add_addr+0x411/0x2000 [ 407.869410][ T72] inet6_addr_add+0x30e/0xa40 [ 407.869410][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.869410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.869410][ T72] netlink_rcv_skb+0x130/0x360 [ 407.869410][ T72] netlink_unicast+0x449/0x710 [ 407.869410][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.869410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.869410][ T72] ___sys_sendmsg+0xee/0x170 [ 407.869410][ T72] __sys_sendmsg+0xcd/0x170 [ 407.869410][ T72] do_syscall_64+0xc6/0x1e0 [ 407.869410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.869410][ T72] [ 407.871641][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 407.871641][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.871641][ T72] ipv6_find_idev+0x102/0x170 [ 407.871641][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.871641][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.871641][ T72] netlink_rcv_skb+0x130/0x360 [ 407.871641][ T72] netlink_unicast+0x449/0x710 [ 407.871641][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.871641][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.871641][ T72] ___sys_sendmsg+0xee/0x170 [ 407.871641][ T72] __sys_sendmsg+0xcd/0x170 [ 407.871641][ T72] do_syscall_64+0xc6/0x1e0 [ 407.871641][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.871641][ T72] [ 407.873342][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 407.873342][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.873342][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.873342][ T72] ipv6_find_idev+0x102/0x170 [ 407.873342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.873342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.873342][ T72] netlink_rcv_skb+0x130/0x360 [ 407.873342][ T72] netlink_unicast+0x449/0x710 [ 407.873342][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.873342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.873342][ T72] ___sys_sendmsg+0xee/0x170 [ 407.873342][ T72] __sys_sendmsg+0xcd/0x170 [ 407.873342][ T72] do_syscall_64+0xc6/0x1e0 [ 407.873342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.873342][ T72] [ 407.875211][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 407.875518][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 407.875518][ T72] netdev_get_by_index+0x5e/0x80 [ 407.875518][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.875518][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.875518][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.875518][ T72] ipv6_add_addr+0x411/0x2000 [ 407.875518][ T72] inet6_addr_add+0x30e/0xa40 [ 407.875518][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.875518][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.875518][ T72] netlink_rcv_skb+0x130/0x360 [ 407.875518][ T72] netlink_unicast+0x449/0x710 [ 407.875518][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.875518][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.875518][ T72] ___sys_sendmsg+0xee/0x170 [ 407.875518][ T72] __sys_sendmsg+0xcd/0x170 [ 407.875518][ T72] do_syscall_64+0xc6/0x1e0 [ 407.875518][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.875518][ T72] [ 407.877714][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 407.877714][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.877714][ T72] ipv6_find_idev+0x102/0x170 [ 407.877714][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.877714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.877714][ T72] netlink_rcv_skb+0x130/0x360 [ 407.877714][ T72] netlink_unicast+0x449/0x710 [ 407.877714][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.877714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.877714][ T72] ___sys_sendmsg+0xee/0x170 [ 407.877714][ T72] __sys_sendmsg+0xcd/0x170 [ 407.877714][ T72] do_syscall_64+0xc6/0x1e0 [ 407.877714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.877714][ T72] [ 407.879435][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 407.879435][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.879435][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.879435][ T72] ipv6_find_idev+0x102/0x170 [ 407.879435][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.879435][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.879435][ T72] netlink_rcv_skb+0x130/0x360 [ 407.879435][ T72] netlink_unicast+0x449/0x710 [ 407.879435][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.879435][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.879435][ T72] ___sys_sendmsg+0xee/0x170 [ 407.879435][ T72] __sys_sendmsg+0xcd/0x170 [ 407.879435][ T72] do_syscall_64+0xc6/0x1e0 [ 407.879435][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.879435][ T72] [ 407.881297][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 407.881586][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 407.881586][ T72] netdev_get_by_index+0x5e/0x80 [ 407.881586][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.881586][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.881586][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.881586][ T72] ipv6_add_addr+0x411/0x2000 [ 407.881586][ T72] inet6_addr_add+0x30e/0xa40 [ 407.881586][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.881586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.881586][ T72] netlink_rcv_skb+0x130/0x360 [ 407.881586][ T72] netlink_unicast+0x449/0x710 [ 407.881586][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.881586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.881586][ T72] ___sys_sendmsg+0xee/0x170 [ 407.881586][ T72] __sys_sendmsg+0xcd/0x170 [ 407.881586][ T72] do_syscall_64+0xc6/0x1e0 [ 407.881586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.881586][ T72] [ 407.883816][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 407.883816][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.883816][ T72] ipv6_find_idev+0x102/0x170 [ 407.883816][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.883816][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.883816][ T72] netlink_rcv_skb+0x130/0x360 [ 407.883816][ T72] netlink_unicast+0x449/0x710 [ 407.883816][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.883816][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.883816][ T72] ___sys_sendmsg+0xee/0x170 [ 407.883816][ T72] __sys_sendmsg+0xcd/0x170 [ 407.883816][ T72] do_syscall_64+0xc6/0x1e0 [ 407.883816][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.883816][ T72] [ 407.885509][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 407.885509][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.885509][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.885509][ T72] ipv6_find_idev+0x102/0x170 [ 407.885509][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.885509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.885509][ T72] netlink_rcv_skb+0x130/0x360 [ 407.885509][ T72] netlink_unicast+0x449/0x710 [ 407.885509][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.885509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.885509][ T72] ___sys_sendmsg+0xee/0x170 [ 407.885509][ T72] __sys_sendmsg+0xcd/0x170 [ 407.885509][ T72] do_syscall_64+0xc6/0x1e0 [ 407.885509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.885509][ T72] [ 407.887815][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 407.888438][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 407.888438][ T72] netdev_get_by_index+0x5e/0x80 [ 407.888438][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.888438][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.888438][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.888438][ T72] ipv6_add_addr+0x411/0x2000 [ 407.888438][ T72] inet6_addr_add+0x30e/0xa40 [ 407.888438][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.888438][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.888438][ T72] netlink_rcv_skb+0x130/0x360 [ 407.888438][ T72] netlink_unicast+0x449/0x710 [ 407.888438][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.888438][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.888438][ T72] ___sys_sendmsg+0xee/0x170 [ 407.888438][ T72] __sys_sendmsg+0xcd/0x170 [ 407.888438][ T72] do_syscall_64+0xc6/0x1e0 [ 407.888438][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.888438][ T72] [ 407.890650][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 407.890650][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.890650][ T72] ipv6_find_idev+0x102/0x170 [ 407.890650][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.890650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.890650][ T72] netlink_rcv_skb+0x130/0x360 [ 407.890650][ T72] netlink_unicast+0x449/0x710 [ 407.890650][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.890650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.890650][ T72] ___sys_sendmsg+0xee/0x170 [ 407.890650][ T72] __sys_sendmsg+0xcd/0x170 [ 407.890650][ T72] do_syscall_64+0xc6/0x1e0 [ 407.890650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.890650][ T72] [ 407.892344][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 407.892344][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.892344][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.892344][ T72] ipv6_find_idev+0x102/0x170 [ 407.892344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.892344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.892344][ T72] netlink_rcv_skb+0x130/0x360 [ 407.892344][ T72] netlink_unicast+0x449/0x710 [ 407.892344][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.892344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.892344][ T72] ___sys_sendmsg+0xee/0x170 [ 407.892344][ T72] __sys_sendmsg+0xcd/0x170 [ 407.892344][ T72] do_syscall_64+0xc6/0x1e0 [ 407.892344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.892344][ T72] [ 407.894178][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 407.894464][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 407.894464][ T72] netdev_get_by_index+0x5e/0x80 [ 407.894464][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.894464][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.894464][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.894464][ T72] ipv6_add_addr+0x411/0x2000 [ 407.894464][ T72] inet6_addr_add+0x30e/0xa40 [ 407.894464][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.894464][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.894464][ T72] netlink_rcv_skb+0x130/0x360 [ 407.894464][ T72] netlink_unicast+0x449/0x710 [ 407.894464][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.894464][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.894464][ T72] ___sys_sendmsg+0xee/0x170 [ 407.894464][ T72] __sys_sendmsg+0xcd/0x170 [ 407.894464][ T72] do_syscall_64+0xc6/0x1e0 [ 407.894464][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.894464][ T72] [ 407.896661][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 407.896661][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.896661][ T72] ipv6_find_idev+0x102/0x170 [ 407.896661][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.896661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.896661][ T72] netlink_rcv_skb+0x130/0x360 [ 407.896661][ T72] netlink_unicast+0x449/0x710 [ 407.896661][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.896661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.896661][ T72] ___sys_sendmsg+0xee/0x170 [ 407.896661][ T72] __sys_sendmsg+0xcd/0x170 [ 407.896661][ T72] do_syscall_64+0xc6/0x1e0 [ 407.896661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.896661][ T72] [ 407.898395][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 407.898395][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.898395][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.898395][ T72] ipv6_find_idev+0x102/0x170 [ 407.898395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.898395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.898395][ T72] netlink_rcv_skb+0x130/0x360 [ 407.898395][ T72] netlink_unicast+0x449/0x710 [ 407.898395][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.898395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.898395][ T72] ___sys_sendmsg+0xee/0x170 [ 407.898395][ T72] __sys_sendmsg+0xcd/0x170 [ 407.898395][ T72] do_syscall_64+0xc6/0x1e0 [ 407.898395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.898395][ T72] [ 407.900491][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 407.900832][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 407.900832][ T72] netdev_get_by_index+0x5e/0x80 [ 407.900832][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.900832][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.900832][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.900832][ T72] ipv6_add_addr+0x411/0x2000 [ 407.900832][ T72] inet6_addr_add+0x30e/0xa40 [ 407.900832][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.900832][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.900832][ T72] netlink_rcv_skb+0x130/0x360 [ 407.900832][ T72] netlink_unicast+0x449/0x710 [ 407.900832][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.900832][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.900832][ T72] ___sys_sendmsg+0xee/0x170 [ 407.900832][ T72] __sys_sendmsg+0xcd/0x170 [ 407.900832][ T72] do_syscall_64+0xc6/0x1e0 [ 407.900832][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.900832][ T72] [ 407.903182][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 407.903182][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.903182][ T72] ipv6_find_idev+0x102/0x170 [ 407.903182][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.903182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.903182][ T72] netlink_rcv_skb+0x130/0x360 [ 407.903182][ T72] netlink_unicast+0x449/0x710 [ 407.903182][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.903182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.903182][ T72] ___sys_sendmsg+0xee/0x170 [ 407.903182][ T72] __sys_sendmsg+0xcd/0x170 [ 407.903182][ T72] do_syscall_64+0xc6/0x1e0 [ 407.903182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.903182][ T72] [ 407.905045][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 407.905045][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.905045][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.905045][ T72] ipv6_find_idev+0x102/0x170 [ 407.905045][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.905045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.905045][ T72] netlink_rcv_skb+0x130/0x360 [ 407.905045][ T72] netlink_unicast+0x449/0x710 [ 407.905045][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.905045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.905045][ T72] ___sys_sendmsg+0xee/0x170 [ 407.905045][ T72] __sys_sendmsg+0xcd/0x170 [ 407.905045][ T72] do_syscall_64+0xc6/0x1e0 [ 407.905045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.905045][ T72] [ 407.907158][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 407.907517][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 407.907517][ T72] netdev_get_by_index+0x5e/0x80 [ 407.907517][ T72] fib6_nh_init+0x3d8/0x15b0 [ 407.907517][ T72] ip6_route_info_create+0xf18/0x17d0 [ 407.907517][ T72] addrconf_f6i_alloc+0x244/0x410 [ 407.907517][ T72] ipv6_add_addr+0x411/0x2000 [ 407.907517][ T72] inet6_addr_add+0x30e/0xa40 [ 407.907517][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 407.907517][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.907517][ T72] netlink_rcv_skb+0x130/0x360 [ 407.907517][ T72] netlink_unicast+0x449/0x710 [ 407.907517][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.907517][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.907517][ T72] ___sys_sendmsg+0xee/0x170 [ 407.907517][ T72] __sys_sendmsg+0xcd/0x170 [ 407.907517][ T72] do_syscall_64+0xc6/0x1e0 [ 407.907517][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.907517][ T72] [ 407.909965][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 407.909965][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 407.909965][ T72] ipv6_find_idev+0x102/0x170 [ 407.909965][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.909965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.909965][ T72] netlink_rcv_skb+0x130/0x360 [ 407.909965][ T72] netlink_unicast+0x449/0x710 [ 407.909965][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.909965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.909965][ T72] ___sys_sendmsg+0xee/0x170 [ 407.909965][ T72] __sys_sendmsg+0xcd/0x170 [ 407.909965][ T72] do_syscall_64+0xc6/0x1e0 [ 407.909965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.909965][ T72] [ 407.911851][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 407.911851][ T72] neigh_parms_alloc+0x1e5/0x510 [ 407.911851][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 407.911851][ T72] ipv6_find_idev+0x102/0x170 [ 407.911851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 407.911851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 407.911851][ T72] netlink_rcv_skb+0x130/0x360 [ 407.911851][ T72] netlink_unicast+0x449/0x710 [ 407.911851][ T72] netlink_sendmsg+0x723/0xbe0 [ 407.911851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 407.911851][ T72] ___sys_sendmsg+0xee/0x170 [ 407.911851][ T72] __sys_sendmsg+0xcd/0x170 [ 407.911851][ T72] do_syscall_64+0xc6/0x1e0 [ 407.911851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 407.911851][ T72] [ 418.166875][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 418.167319][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 418.167319][ T72] netdev_get_by_index+0x5e/0x80 [ 418.167319][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.167319][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.167319][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.167319][ T72] ipv6_add_addr+0x411/0x2000 [ 418.167319][ T72] inet6_addr_add+0x30e/0xa40 [ 418.167319][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.167319][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.167319][ T72] netlink_rcv_skb+0x130/0x360 [ 418.167319][ T72] netlink_unicast+0x449/0x710 [ 418.167319][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.167319][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.167319][ T72] ___sys_sendmsg+0xee/0x170 [ 418.167319][ T72] __sys_sendmsg+0xcd/0x170 [ 418.167319][ T72] do_syscall_64+0xc6/0x1e0 [ 418.167319][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.167319][ T72] [ 418.169332][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 418.169332][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.169332][ T72] ipv6_find_idev+0x102/0x170 [ 418.169332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.169332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.169332][ T72] netlink_rcv_skb+0x130/0x360 [ 418.169332][ T72] netlink_unicast+0x449/0x710 [ 418.169332][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.169332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.169332][ T72] ___sys_sendmsg+0xee/0x170 [ 418.169332][ T72] __sys_sendmsg+0xcd/0x170 [ 418.169332][ T72] do_syscall_64+0xc6/0x1e0 [ 418.169332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.169332][ T72] [ 418.170848][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 418.170848][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.170848][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.170848][ T72] ipv6_find_idev+0x102/0x170 [ 418.170848][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.170848][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.170848][ T72] netlink_rcv_skb+0x130/0x360 [ 418.170848][ T72] netlink_unicast+0x449/0x710 [ 418.170848][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.170848][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.170848][ T72] ___sys_sendmsg+0xee/0x170 [ 418.170848][ T72] __sys_sendmsg+0xcd/0x170 [ 418.170848][ T72] do_syscall_64+0xc6/0x1e0 [ 418.170848][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.170848][ T72] [ 418.172509][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 418.172789][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 418.172789][ T72] netdev_get_by_index+0x5e/0x80 [ 418.172789][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.172789][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.172789][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.172789][ T72] ipv6_add_addr+0x411/0x2000 [ 418.172789][ T72] inet6_addr_add+0x30e/0xa40 [ 418.172789][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.172789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.172789][ T72] netlink_rcv_skb+0x130/0x360 [ 418.172789][ T72] netlink_unicast+0x449/0x710 [ 418.172789][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.172789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.172789][ T72] ___sys_sendmsg+0xee/0x170 [ 418.172789][ T72] __sys_sendmsg+0xcd/0x170 [ 418.172789][ T72] do_syscall_64+0xc6/0x1e0 [ 418.172789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.172789][ T72] [ 418.174753][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 418.174753][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.174753][ T72] ipv6_find_idev+0x102/0x170 [ 418.174753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.174753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.174753][ T72] netlink_rcv_skb+0x130/0x360 [ 418.174753][ T72] netlink_unicast+0x449/0x710 [ 418.174753][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.174753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.174753][ T72] ___sys_sendmsg+0xee/0x170 [ 418.174753][ T72] __sys_sendmsg+0xcd/0x170 [ 418.174753][ T72] do_syscall_64+0xc6/0x1e0 [ 418.174753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.174753][ T72] [ 418.176263][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 418.176263][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.176263][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.176263][ T72] ipv6_find_idev+0x102/0x170 [ 418.176263][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.176263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.176263][ T72] netlink_rcv_skb+0x130/0x360 [ 418.176263][ T72] netlink_unicast+0x449/0x710 [ 418.176263][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.176263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.176263][ T72] ___sys_sendmsg+0xee/0x170 [ 418.176263][ T72] __sys_sendmsg+0xcd/0x170 [ 418.176263][ T72] do_syscall_64+0xc6/0x1e0 [ 418.176263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.176263][ T72] [ 418.177914][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 418.178177][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 418.178177][ T72] netdev_get_by_index+0x5e/0x80 [ 418.178177][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.178177][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.178177][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.178177][ T72] ipv6_add_addr+0x411/0x2000 [ 418.178177][ T72] inet6_addr_add+0x30e/0xa40 [ 418.178177][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.178177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.178177][ T72] netlink_rcv_skb+0x130/0x360 [ 418.178177][ T72] netlink_unicast+0x449/0x710 [ 418.178177][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.178177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.178177][ T72] ___sys_sendmsg+0xee/0x170 [ 418.178177][ T72] __sys_sendmsg+0xcd/0x170 [ 418.178177][ T72] do_syscall_64+0xc6/0x1e0 [ 418.178177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.178177][ T72] [ 418.180160][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 418.180160][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.180160][ T72] ipv6_find_idev+0x102/0x170 [ 418.180160][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.180160][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.180160][ T72] netlink_rcv_skb+0x130/0x360 [ 418.180160][ T72] netlink_unicast+0x449/0x710 [ 418.180160][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.180160][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.180160][ T72] ___sys_sendmsg+0xee/0x170 [ 418.180160][ T72] __sys_sendmsg+0xcd/0x170 [ 418.180160][ T72] do_syscall_64+0xc6/0x1e0 [ 418.180160][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.180160][ T72] [ 418.181685][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 418.181685][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.181685][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.181685][ T72] ipv6_find_idev+0x102/0x170 [ 418.181685][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.181685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.181685][ T72] netlink_rcv_skb+0x130/0x360 [ 418.181685][ T72] netlink_unicast+0x449/0x710 [ 418.181685][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.181685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.181685][ T72] ___sys_sendmsg+0xee/0x170 [ 418.181685][ T72] __sys_sendmsg+0xcd/0x170 [ 418.181685][ T72] do_syscall_64+0xc6/0x1e0 [ 418.181685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.181685][ T72] [ 418.183345][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 418.183608][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 418.183608][ T72] netdev_get_by_index+0x5e/0x80 [ 418.183608][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.183608][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.183608][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.183608][ T72] ipv6_add_addr+0x411/0x2000 [ 418.183608][ T72] inet6_addr_add+0x30e/0xa40 [ 418.183608][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.183608][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.183608][ T72] netlink_rcv_skb+0x130/0x360 [ 418.183608][ T72] netlink_unicast+0x449/0x710 [ 418.183608][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.183608][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.183608][ T72] ___sys_sendmsg+0xee/0x170 [ 418.183608][ T72] __sys_sendmsg+0xcd/0x170 [ 418.183608][ T72] do_syscall_64+0xc6/0x1e0 [ 418.183608][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.183608][ T72] [ 418.185576][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 418.185576][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.185576][ T72] ipv6_find_idev+0x102/0x170 [ 418.185576][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.185576][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.185576][ T72] netlink_rcv_skb+0x130/0x360 [ 418.185576][ T72] netlink_unicast+0x449/0x710 [ 418.185576][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.185576][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.185576][ T72] ___sys_sendmsg+0xee/0x170 [ 418.185576][ T72] __sys_sendmsg+0xcd/0x170 [ 418.185576][ T72] do_syscall_64+0xc6/0x1e0 [ 418.185576][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.185576][ T72] [ 418.187097][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 418.187097][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.187097][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.187097][ T72] ipv6_find_idev+0x102/0x170 [ 418.187097][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.187097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.187097][ T72] netlink_rcv_skb+0x130/0x360 [ 418.187097][ T72] netlink_unicast+0x449/0x710 [ 418.187097][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.187097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.187097][ T72] ___sys_sendmsg+0xee/0x170 [ 418.187097][ T72] __sys_sendmsg+0xcd/0x170 [ 418.187097][ T72] do_syscall_64+0xc6/0x1e0 [ 418.187097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.187097][ T72] [ 418.189196][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 418.189461][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 418.189461][ T72] netdev_get_by_index+0x5e/0x80 [ 418.189461][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.189461][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.189461][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.189461][ T72] ipv6_add_addr+0x411/0x2000 [ 418.189461][ T72] inet6_addr_add+0x30e/0xa40 [ 418.189461][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.189461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.189461][ T72] netlink_rcv_skb+0x130/0x360 [ 418.189461][ T72] netlink_unicast+0x449/0x710 [ 418.189461][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.189461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.189461][ T72] ___sys_sendmsg+0xee/0x170 [ 418.189461][ T72] __sys_sendmsg+0xcd/0x170 [ 418.189461][ T72] do_syscall_64+0xc6/0x1e0 [ 418.189461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.189461][ T72] [ 418.191445][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 418.191445][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.191445][ T72] ipv6_find_idev+0x102/0x170 [ 418.191445][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.191445][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.191445][ T72] netlink_rcv_skb+0x130/0x360 [ 418.191445][ T72] netlink_unicast+0x449/0x710 [ 418.191445][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.191445][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.191445][ T72] ___sys_sendmsg+0xee/0x170 [ 418.191445][ T72] __sys_sendmsg+0xcd/0x170 [ 418.191445][ T72] do_syscall_64+0xc6/0x1e0 [ 418.191445][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.191445][ T72] [ 418.192959][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 418.192959][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.192959][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.192959][ T72] ipv6_find_idev+0x102/0x170 [ 418.192959][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.192959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.192959][ T72] netlink_rcv_skb+0x130/0x360 [ 418.192959][ T72] netlink_unicast+0x449/0x710 [ 418.192959][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.192959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.192959][ T72] ___sys_sendmsg+0xee/0x170 [ 418.192959][ T72] __sys_sendmsg+0xcd/0x170 [ 418.192959][ T72] do_syscall_64+0xc6/0x1e0 [ 418.192959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.192959][ T72] [ 418.194670][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 418.194984][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 418.194984][ T72] netdev_get_by_index+0x5e/0x80 [ 418.194984][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.194984][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.194984][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.194984][ T72] ipv6_add_addr+0x411/0x2000 [ 418.194984][ T72] inet6_addr_add+0x30e/0xa40 [ 418.194984][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.194984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.194984][ T72] netlink_rcv_skb+0x130/0x360 [ 418.194984][ T72] netlink_unicast+0x449/0x710 [ 418.194984][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.194984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.194984][ T72] ___sys_sendmsg+0xee/0x170 [ 418.194984][ T72] __sys_sendmsg+0xcd/0x170 [ 418.194984][ T72] do_syscall_64+0xc6/0x1e0 [ 418.194984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.194984][ T72] [ 418.197004][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 418.197004][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.197004][ T72] ipv6_find_idev+0x102/0x170 [ 418.197004][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.197004][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.197004][ T72] netlink_rcv_skb+0x130/0x360 [ 418.197004][ T72] netlink_unicast+0x449/0x710 [ 418.197004][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.197004][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.197004][ T72] ___sys_sendmsg+0xee/0x170 [ 418.197004][ T72] __sys_sendmsg+0xcd/0x170 [ 418.197004][ T72] do_syscall_64+0xc6/0x1e0 [ 418.197004][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.197004][ T72] [ 418.198750][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 418.198750][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.198750][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.198750][ T72] ipv6_find_idev+0x102/0x170 [ 418.198750][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.198750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.198750][ T72] netlink_rcv_skb+0x130/0x360 [ 418.198750][ T72] netlink_unicast+0x449/0x710 [ 418.198750][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.198750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.198750][ T72] ___sys_sendmsg+0xee/0x170 [ 418.198750][ T72] __sys_sendmsg+0xcd/0x170 [ 418.198750][ T72] do_syscall_64+0xc6/0x1e0 [ 418.198750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.198750][ T72] [ 418.200684][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 418.200998][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 418.200998][ T72] netdev_get_by_index+0x5e/0x80 [ 418.200998][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.200998][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.200998][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.200998][ T72] ipv6_add_addr+0x411/0x2000 [ 418.200998][ T72] inet6_addr_add+0x30e/0xa40 [ 418.200998][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.200998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.200998][ T72] netlink_rcv_skb+0x130/0x360 [ 418.200998][ T72] netlink_unicast+0x449/0x710 [ 418.200998][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.200998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.200998][ T72] ___sys_sendmsg+0xee/0x170 [ 418.200998][ T72] __sys_sendmsg+0xcd/0x170 [ 418.200998][ T72] do_syscall_64+0xc6/0x1e0 [ 418.200998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.200998][ T72] [ 418.203149][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 418.203149][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.203149][ T72] ipv6_find_idev+0x102/0x170 [ 418.203149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.203149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.203149][ T72] netlink_rcv_skb+0x130/0x360 [ 418.203149][ T72] netlink_unicast+0x449/0x710 [ 418.203149][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.203149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.203149][ T72] ___sys_sendmsg+0xee/0x170 [ 418.203149][ T72] __sys_sendmsg+0xcd/0x170 [ 418.203149][ T72] do_syscall_64+0xc6/0x1e0 [ 418.203149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.203149][ T72] [ 418.204849][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 418.204849][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.204849][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.204849][ T72] ipv6_find_idev+0x102/0x170 [ 418.204849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.204849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.204849][ T72] netlink_rcv_skb+0x130/0x360 [ 418.204849][ T72] netlink_unicast+0x449/0x710 [ 418.204849][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.204849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.204849][ T72] ___sys_sendmsg+0xee/0x170 [ 418.204849][ T72] __sys_sendmsg+0xcd/0x170 [ 418.204849][ T72] do_syscall_64+0xc6/0x1e0 [ 418.204849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.204849][ T72] [ 418.206723][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 418.207258][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 418.207258][ T72] netdev_get_by_index+0x5e/0x80 [ 418.207258][ T72] fib6_nh_init+0x3d8/0x15b0 [ 418.207258][ T72] ip6_route_info_create+0xf18/0x17d0 [ 418.207258][ T72] addrconf_f6i_alloc+0x244/0x410 [ 418.207258][ T72] ipv6_add_addr+0x411/0x2000 [ 418.207258][ T72] inet6_addr_add+0x30e/0xa40 [ 418.207258][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 418.207258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.207258][ T72] netlink_rcv_skb+0x130/0x360 [ 418.207258][ T72] netlink_unicast+0x449/0x710 [ 418.207258][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.207258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.207258][ T72] ___sys_sendmsg+0xee/0x170 [ 418.207258][ T72] __sys_sendmsg+0xcd/0x170 [ 418.207258][ T72] do_syscall_64+0xc6/0x1e0 [ 418.207258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.207258][ T72] [ 418.209469][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 418.209469][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 418.209469][ T72] ipv6_find_idev+0x102/0x170 [ 418.209469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.209469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.209469][ T72] netlink_rcv_skb+0x130/0x360 [ 418.209469][ T72] netlink_unicast+0x449/0x710 [ 418.209469][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.209469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.209469][ T72] ___sys_sendmsg+0xee/0x170 [ 418.209469][ T72] __sys_sendmsg+0xcd/0x170 [ 418.209469][ T72] do_syscall_64+0xc6/0x1e0 [ 418.209469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.209469][ T72] [ 418.211154][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 418.211154][ T72] neigh_parms_alloc+0x1e5/0x510 [ 418.211154][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 418.211154][ T72] ipv6_find_idev+0x102/0x170 [ 418.211154][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 418.211154][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 418.211154][ T72] netlink_rcv_skb+0x130/0x360 [ 418.211154][ T72] netlink_unicast+0x449/0x710 [ 418.211154][ T72] netlink_sendmsg+0x723/0xbe0 [ 418.211154][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 418.211154][ T72] ___sys_sendmsg+0xee/0x170 [ 418.211154][ T72] __sys_sendmsg+0xcd/0x170 [ 418.211154][ T72] do_syscall_64+0xc6/0x1e0 [ 418.211154][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 418.211154][ T72] [ 428.462815][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 428.463315][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 428.463315][ T72] netdev_get_by_index+0x5e/0x80 [ 428.463315][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.463315][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.463315][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.463315][ T72] ipv6_add_addr+0x411/0x2000 [ 428.463315][ T72] inet6_addr_add+0x30e/0xa40 [ 428.463315][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.463315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.463315][ T72] netlink_rcv_skb+0x130/0x360 [ 428.463315][ T72] netlink_unicast+0x449/0x710 [ 428.463315][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.463315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.463315][ T72] ___sys_sendmsg+0xee/0x170 [ 428.463315][ T72] __sys_sendmsg+0xcd/0x170 [ 428.463315][ T72] do_syscall_64+0xc6/0x1e0 [ 428.463315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.463315][ T72] [ 428.465406][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 428.465406][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.465406][ T72] ipv6_find_idev+0x102/0x170 [ 428.465406][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.465406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.465406][ T72] netlink_rcv_skb+0x130/0x360 [ 428.465406][ T72] netlink_unicast+0x449/0x710 [ 428.465406][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.465406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.465406][ T72] ___sys_sendmsg+0xee/0x170 [ 428.465406][ T72] __sys_sendmsg+0xcd/0x170 [ 428.465406][ T72] do_syscall_64+0xc6/0x1e0 [ 428.465406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.465406][ T72] [ 428.466944][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 428.466944][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.466944][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.466944][ T72] ipv6_find_idev+0x102/0x170 [ 428.466944][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.466944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.466944][ T72] netlink_rcv_skb+0x130/0x360 [ 428.466944][ T72] netlink_unicast+0x449/0x710 [ 428.466944][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.466944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.466944][ T72] ___sys_sendmsg+0xee/0x170 [ 428.466944][ T72] __sys_sendmsg+0xcd/0x170 [ 428.466944][ T72] do_syscall_64+0xc6/0x1e0 [ 428.466944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.466944][ T72] [ 428.468635][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 428.468942][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 428.468942][ T72] netdev_get_by_index+0x5e/0x80 [ 428.468942][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.468942][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.468942][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.468942][ T72] ipv6_add_addr+0x411/0x2000 [ 428.468942][ T72] inet6_addr_add+0x30e/0xa40 [ 428.468942][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.468942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.468942][ T72] netlink_rcv_skb+0x130/0x360 [ 428.468942][ T72] netlink_unicast+0x449/0x710 [ 428.468942][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.468942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.468942][ T72] ___sys_sendmsg+0xee/0x170 [ 428.468942][ T72] __sys_sendmsg+0xcd/0x170 [ 428.468942][ T72] do_syscall_64+0xc6/0x1e0 [ 428.468942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.468942][ T72] [ 428.470936][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 428.470936][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.470936][ T72] ipv6_find_idev+0x102/0x170 [ 428.470936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.470936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.470936][ T72] netlink_rcv_skb+0x130/0x360 [ 428.470936][ T72] netlink_unicast+0x449/0x710 [ 428.470936][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.470936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.470936][ T72] ___sys_sendmsg+0xee/0x170 [ 428.470936][ T72] __sys_sendmsg+0xcd/0x170 [ 428.470936][ T72] do_syscall_64+0xc6/0x1e0 [ 428.470936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.470936][ T72] [ 428.472491][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 428.472491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.472491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.472491][ T72] ipv6_find_idev+0x102/0x170 [ 428.472491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.472491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.472491][ T72] netlink_rcv_skb+0x130/0x360 [ 428.472491][ T72] netlink_unicast+0x449/0x710 [ 428.472491][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.472491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.472491][ T72] ___sys_sendmsg+0xee/0x170 [ 428.472491][ T72] __sys_sendmsg+0xcd/0x170 [ 428.472491][ T72] do_syscall_64+0xc6/0x1e0 [ 428.472491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.472491][ T72] [ 428.474195][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 428.474461][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 428.474461][ T72] netdev_get_by_index+0x5e/0x80 [ 428.474461][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.474461][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.474461][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.474461][ T72] ipv6_add_addr+0x411/0x2000 [ 428.474461][ T72] inet6_addr_add+0x30e/0xa40 [ 428.474461][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.474461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.474461][ T72] netlink_rcv_skb+0x130/0x360 [ 428.474461][ T72] netlink_unicast+0x449/0x710 [ 428.474461][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.474461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.474461][ T72] ___sys_sendmsg+0xee/0x170 [ 428.474461][ T72] __sys_sendmsg+0xcd/0x170 [ 428.474461][ T72] do_syscall_64+0xc6/0x1e0 [ 428.474461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.474461][ T72] [ 428.476444][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 428.476444][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.476444][ T72] ipv6_find_idev+0x102/0x170 [ 428.476444][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.476444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.476444][ T72] netlink_rcv_skb+0x130/0x360 [ 428.476444][ T72] netlink_unicast+0x449/0x710 [ 428.476444][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.476444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.476444][ T72] ___sys_sendmsg+0xee/0x170 [ 428.476444][ T72] __sys_sendmsg+0xcd/0x170 [ 428.476444][ T72] do_syscall_64+0xc6/0x1e0 [ 428.476444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.476444][ T72] [ 428.477992][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 428.477992][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.477992][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.477992][ T72] ipv6_find_idev+0x102/0x170 [ 428.477992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.477992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.477992][ T72] netlink_rcv_skb+0x130/0x360 [ 428.477992][ T72] netlink_unicast+0x449/0x710 [ 428.477992][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.477992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.477992][ T72] ___sys_sendmsg+0xee/0x170 [ 428.477992][ T72] __sys_sendmsg+0xcd/0x170 [ 428.477992][ T72] do_syscall_64+0xc6/0x1e0 [ 428.477992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.477992][ T72] [ 428.479703][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 428.480048][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 428.480048][ T72] netdev_get_by_index+0x5e/0x80 [ 428.480048][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.480048][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.480048][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.480048][ T72] ipv6_add_addr+0x411/0x2000 [ 428.480048][ T72] inet6_addr_add+0x30e/0xa40 [ 428.480048][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.480048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.480048][ T72] netlink_rcv_skb+0x130/0x360 [ 428.480048][ T72] netlink_unicast+0x449/0x710 [ 428.480048][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.480048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.480048][ T72] ___sys_sendmsg+0xee/0x170 [ 428.480048][ T72] __sys_sendmsg+0xcd/0x170 [ 428.480048][ T72] do_syscall_64+0xc6/0x1e0 [ 428.480048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.480048][ T72] [ 428.482037][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 428.482037][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.482037][ T72] ipv6_find_idev+0x102/0x170 [ 428.482037][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.482037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.482037][ T72] netlink_rcv_skb+0x130/0x360 [ 428.482037][ T72] netlink_unicast+0x449/0x710 [ 428.482037][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.482037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.482037][ T72] ___sys_sendmsg+0xee/0x170 [ 428.482037][ T72] __sys_sendmsg+0xcd/0x170 [ 428.482037][ T72] do_syscall_64+0xc6/0x1e0 [ 428.482037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.482037][ T72] [ 428.483574][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 428.483574][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.483574][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.483574][ T72] ipv6_find_idev+0x102/0x170 [ 428.483574][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.483574][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.483574][ T72] netlink_rcv_skb+0x130/0x360 [ 428.483574][ T72] netlink_unicast+0x449/0x710 [ 428.483574][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.483574][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.483574][ T72] ___sys_sendmsg+0xee/0x170 [ 428.483574][ T72] __sys_sendmsg+0xcd/0x170 [ 428.483574][ T72] do_syscall_64+0xc6/0x1e0 [ 428.483574][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.483574][ T72] [ 428.485313][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 428.485620][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 428.485620][ T72] netdev_get_by_index+0x5e/0x80 [ 428.485620][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.485620][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.485620][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.485620][ T72] ipv6_add_addr+0x411/0x2000 [ 428.485620][ T72] inet6_addr_add+0x30e/0xa40 [ 428.485620][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.485620][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.485620][ T72] netlink_rcv_skb+0x130/0x360 [ 428.485620][ T72] netlink_unicast+0x449/0x710 [ 428.485620][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.485620][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.485620][ T72] ___sys_sendmsg+0xee/0x170 [ 428.485620][ T72] __sys_sendmsg+0xcd/0x170 [ 428.485620][ T72] do_syscall_64+0xc6/0x1e0 [ 428.485620][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.485620][ T72] [ 428.487638][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 428.487638][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.487638][ T72] ipv6_find_idev+0x102/0x170 [ 428.487638][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.487638][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.487638][ T72] netlink_rcv_skb+0x130/0x360 [ 428.487638][ T72] netlink_unicast+0x449/0x710 [ 428.487638][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.487638][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.487638][ T72] ___sys_sendmsg+0xee/0x170 [ 428.487638][ T72] __sys_sendmsg+0xcd/0x170 [ 428.487638][ T72] do_syscall_64+0xc6/0x1e0 [ 428.487638][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.487638][ T72] [ 428.489181][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 428.489181][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.489181][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.489181][ T72] ipv6_find_idev+0x102/0x170 [ 428.489181][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.489181][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.489181][ T72] netlink_rcv_skb+0x130/0x360 [ 428.489181][ T72] netlink_unicast+0x449/0x710 [ 428.489181][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.489181][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.489181][ T72] ___sys_sendmsg+0xee/0x170 [ 428.489181][ T72] __sys_sendmsg+0xcd/0x170 [ 428.489181][ T72] do_syscall_64+0xc6/0x1e0 [ 428.489181][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.489181][ T72] [ 428.491026][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 428.491336][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 428.491336][ T72] netdev_get_by_index+0x5e/0x80 [ 428.491336][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.491336][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.491336][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.491336][ T72] ipv6_add_addr+0x411/0x2000 [ 428.491336][ T72] inet6_addr_add+0x30e/0xa40 [ 428.491336][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.491336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.491336][ T72] netlink_rcv_skb+0x130/0x360 [ 428.491336][ T72] netlink_unicast+0x449/0x710 [ 428.491336][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.491336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.491336][ T72] ___sys_sendmsg+0xee/0x170 [ 428.491336][ T72] __sys_sendmsg+0xcd/0x170 [ 428.491336][ T72] do_syscall_64+0xc6/0x1e0 [ 428.491336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.491336][ T72] [ 428.493562][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 428.493562][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.493562][ T72] ipv6_find_idev+0x102/0x170 [ 428.493562][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.493562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.493562][ T72] netlink_rcv_skb+0x130/0x360 [ 428.493562][ T72] netlink_unicast+0x449/0x710 [ 428.493562][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.493562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.493562][ T72] ___sys_sendmsg+0xee/0x170 [ 428.493562][ T72] __sys_sendmsg+0xcd/0x170 [ 428.493562][ T72] do_syscall_64+0xc6/0x1e0 [ 428.493562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.493562][ T72] [ 428.495273][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 428.495273][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.495273][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.495273][ T72] ipv6_find_idev+0x102/0x170 [ 428.495273][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.495273][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.495273][ T72] netlink_rcv_skb+0x130/0x360 [ 428.495273][ T72] netlink_unicast+0x449/0x710 [ 428.495273][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.495273][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.495273][ T72] ___sys_sendmsg+0xee/0x170 [ 428.495273][ T72] __sys_sendmsg+0xcd/0x170 [ 428.495273][ T72] do_syscall_64+0xc6/0x1e0 [ 428.495273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.495273][ T72] [ 428.497241][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 428.497548][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 428.497548][ T72] netdev_get_by_index+0x5e/0x80 [ 428.497548][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.497548][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.497548][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.497548][ T72] ipv6_add_addr+0x411/0x2000 [ 428.497548][ T72] inet6_addr_add+0x30e/0xa40 [ 428.497548][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.497548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.497548][ T72] netlink_rcv_skb+0x130/0x360 [ 428.497548][ T72] netlink_unicast+0x449/0x710 [ 428.497548][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.497548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.497548][ T72] ___sys_sendmsg+0xee/0x170 [ 428.497548][ T72] __sys_sendmsg+0xcd/0x170 [ 428.497548][ T72] do_syscall_64+0xc6/0x1e0 [ 428.497548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.497548][ T72] [ 428.499735][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 428.499735][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.499735][ T72] ipv6_find_idev+0x102/0x170 [ 428.499735][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.499735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.499735][ T72] netlink_rcv_skb+0x130/0x360 [ 428.499735][ T72] netlink_unicast+0x449/0x710 [ 428.499735][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.499735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.499735][ T72] ___sys_sendmsg+0xee/0x170 [ 428.499735][ T72] __sys_sendmsg+0xcd/0x170 [ 428.499735][ T72] do_syscall_64+0xc6/0x1e0 [ 428.499735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.499735][ T72] [ 428.501451][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 428.501451][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.501451][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.501451][ T72] ipv6_find_idev+0x102/0x170 [ 428.501451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.501451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.501451][ T72] netlink_rcv_skb+0x130/0x360 [ 428.501451][ T72] netlink_unicast+0x449/0x710 [ 428.501451][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.501451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.501451][ T72] ___sys_sendmsg+0xee/0x170 [ 428.501451][ T72] __sys_sendmsg+0xcd/0x170 [ 428.501451][ T72] do_syscall_64+0xc6/0x1e0 [ 428.501451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.501451][ T72] [ 428.503489][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 428.503818][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 428.503818][ T72] netdev_get_by_index+0x5e/0x80 [ 428.503818][ T72] fib6_nh_init+0x3d8/0x15b0 [ 428.503818][ T72] ip6_route_info_create+0xf18/0x17d0 [ 428.503818][ T72] addrconf_f6i_alloc+0x244/0x410 [ 428.503818][ T72] ipv6_add_addr+0x411/0x2000 [ 428.503818][ T72] inet6_addr_add+0x30e/0xa40 [ 428.503818][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 428.503818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.503818][ T72] netlink_rcv_skb+0x130/0x360 [ 428.503818][ T72] netlink_unicast+0x449/0x710 [ 428.503818][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.503818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.503818][ T72] ___sys_sendmsg+0xee/0x170 [ 428.503818][ T72] __sys_sendmsg+0xcd/0x170 [ 428.503818][ T72] do_syscall_64+0xc6/0x1e0 [ 428.503818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.503818][ T72] [ 428.505992][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 428.505992][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 428.505992][ T72] ipv6_find_idev+0x102/0x170 [ 428.505992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.505992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.505992][ T72] netlink_rcv_skb+0x130/0x360 [ 428.505992][ T72] netlink_unicast+0x449/0x710 [ 428.505992][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.505992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.505992][ T72] ___sys_sendmsg+0xee/0x170 [ 428.505992][ T72] __sys_sendmsg+0xcd/0x170 [ 428.505992][ T72] do_syscall_64+0xc6/0x1e0 [ 428.505992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.505992][ T72] [ 428.507709][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 428.507709][ T72] neigh_parms_alloc+0x1e5/0x510 [ 428.507709][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 428.507709][ T72] ipv6_find_idev+0x102/0x170 [ 428.507709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 428.507709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 428.507709][ T72] netlink_rcv_skb+0x130/0x360 [ 428.507709][ T72] netlink_unicast+0x449/0x710 [ 428.507709][ T72] netlink_sendmsg+0x723/0xbe0 [ 428.507709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 428.507709][ T72] ___sys_sendmsg+0xee/0x170 [ 428.507709][ T72] __sys_sendmsg+0xcd/0x170 [ 428.507709][ T72] do_syscall_64+0xc6/0x1e0 [ 428.507709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 428.507709][ T72] [ 438.758896][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 438.759309][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 438.759309][ T72] netdev_get_by_index+0x5e/0x80 [ 438.759309][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.759309][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.759309][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.759309][ T72] ipv6_add_addr+0x411/0x2000 [ 438.759309][ T72] inet6_addr_add+0x30e/0xa40 [ 438.759309][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.759309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.759309][ T72] netlink_rcv_skb+0x130/0x360 [ 438.759309][ T72] netlink_unicast+0x449/0x710 [ 438.759309][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.759309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.759309][ T72] ___sys_sendmsg+0xee/0x170 [ 438.759309][ T72] __sys_sendmsg+0xcd/0x170 [ 438.759309][ T72] do_syscall_64+0xc6/0x1e0 [ 438.759309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.759309][ T72] [ 438.761291][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 438.761291][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.761291][ T72] ipv6_find_idev+0x102/0x170 [ 438.761291][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.761291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.761291][ T72] netlink_rcv_skb+0x130/0x360 [ 438.761291][ T72] netlink_unicast+0x449/0x710 [ 438.761291][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.761291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.761291][ T72] ___sys_sendmsg+0xee/0x170 [ 438.761291][ T72] __sys_sendmsg+0xcd/0x170 [ 438.761291][ T72] do_syscall_64+0xc6/0x1e0 [ 438.761291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.761291][ T72] [ 438.762887][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 438.762887][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.762887][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.762887][ T72] ipv6_find_idev+0x102/0x170 [ 438.762887][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.762887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.762887][ T72] netlink_rcv_skb+0x130/0x360 [ 438.762887][ T72] netlink_unicast+0x449/0x710 [ 438.762887][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.762887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.762887][ T72] ___sys_sendmsg+0xee/0x170 [ 438.762887][ T72] __sys_sendmsg+0xcd/0x170 [ 438.762887][ T72] do_syscall_64+0xc6/0x1e0 [ 438.762887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.762887][ T72] [ 438.764717][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 438.765010][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 438.765010][ T72] netdev_get_by_index+0x5e/0x80 [ 438.765010][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.765010][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.765010][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.765010][ T72] ipv6_add_addr+0x411/0x2000 [ 438.765010][ T72] inet6_addr_add+0x30e/0xa40 [ 438.765010][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.765010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.765010][ T72] netlink_rcv_skb+0x130/0x360 [ 438.765010][ T72] netlink_unicast+0x449/0x710 [ 438.765010][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.765010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.765010][ T72] ___sys_sendmsg+0xee/0x170 [ 438.765010][ T72] __sys_sendmsg+0xcd/0x170 [ 438.765010][ T72] do_syscall_64+0xc6/0x1e0 [ 438.765010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.765010][ T72] [ 438.767004][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 438.767004][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.767004][ T72] ipv6_find_idev+0x102/0x170 [ 438.767004][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.767004][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.767004][ T72] netlink_rcv_skb+0x130/0x360 [ 438.767004][ T72] netlink_unicast+0x449/0x710 [ 438.767004][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.767004][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.767004][ T72] ___sys_sendmsg+0xee/0x170 [ 438.767004][ T72] __sys_sendmsg+0xcd/0x170 [ 438.767004][ T72] do_syscall_64+0xc6/0x1e0 [ 438.767004][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.767004][ T72] [ 438.768657][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 438.768657][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.768657][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.768657][ T72] ipv6_find_idev+0x102/0x170 [ 438.768657][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.768657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.768657][ T72] netlink_rcv_skb+0x130/0x360 [ 438.768657][ T72] netlink_unicast+0x449/0x710 [ 438.768657][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.768657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.768657][ T72] ___sys_sendmsg+0xee/0x170 [ 438.768657][ T72] __sys_sendmsg+0xcd/0x170 [ 438.768657][ T72] do_syscall_64+0xc6/0x1e0 [ 438.768657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.768657][ T72] [ 438.770464][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 438.770745][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 438.770745][ T72] netdev_get_by_index+0x5e/0x80 [ 438.770745][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.770745][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.770745][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.770745][ T72] ipv6_add_addr+0x411/0x2000 [ 438.770745][ T72] inet6_addr_add+0x30e/0xa40 [ 438.770745][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.770745][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.770745][ T72] netlink_rcv_skb+0x130/0x360 [ 438.770745][ T72] netlink_unicast+0x449/0x710 [ 438.770745][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.770745][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.770745][ T72] ___sys_sendmsg+0xee/0x170 [ 438.770745][ T72] __sys_sendmsg+0xcd/0x170 [ 438.770745][ T72] do_syscall_64+0xc6/0x1e0 [ 438.770745][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.770745][ T72] [ 438.772703][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 438.772703][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.772703][ T72] ipv6_find_idev+0x102/0x170 [ 438.772703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.772703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.772703][ T72] netlink_rcv_skb+0x130/0x360 [ 438.772703][ T72] netlink_unicast+0x449/0x710 [ 438.772703][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.772703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.772703][ T72] ___sys_sendmsg+0xee/0x170 [ 438.772703][ T72] __sys_sendmsg+0xcd/0x170 [ 438.772703][ T72] do_syscall_64+0xc6/0x1e0 [ 438.772703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.772703][ T72] [ 438.774332][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 438.774332][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.774332][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.774332][ T72] ipv6_find_idev+0x102/0x170 [ 438.774332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.774332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.774332][ T72] netlink_rcv_skb+0x130/0x360 [ 438.774332][ T72] netlink_unicast+0x449/0x710 [ 438.774332][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.774332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.774332][ T72] ___sys_sendmsg+0xee/0x170 [ 438.774332][ T72] __sys_sendmsg+0xcd/0x170 [ 438.774332][ T72] do_syscall_64+0xc6/0x1e0 [ 438.774332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.774332][ T72] [ 438.776148][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 438.776418][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 438.776418][ T72] netdev_get_by_index+0x5e/0x80 [ 438.776418][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.776418][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.776418][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.776418][ T72] ipv6_add_addr+0x411/0x2000 [ 438.776418][ T72] inet6_addr_add+0x30e/0xa40 [ 438.776418][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.776418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.776418][ T72] netlink_rcv_skb+0x130/0x360 [ 438.776418][ T72] netlink_unicast+0x449/0x710 [ 438.776418][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.776418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.776418][ T72] ___sys_sendmsg+0xee/0x170 [ 438.776418][ T72] __sys_sendmsg+0xcd/0x170 [ 438.776418][ T72] do_syscall_64+0xc6/0x1e0 [ 438.776418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.776418][ T72] [ 438.778402][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 438.778402][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.778402][ T72] ipv6_find_idev+0x102/0x170 [ 438.778402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.778402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.778402][ T72] netlink_rcv_skb+0x130/0x360 [ 438.778402][ T72] netlink_unicast+0x449/0x710 [ 438.778402][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.778402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.778402][ T72] ___sys_sendmsg+0xee/0x170 [ 438.778402][ T72] __sys_sendmsg+0xcd/0x170 [ 438.778402][ T72] do_syscall_64+0xc6/0x1e0 [ 438.778402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.778402][ T72] [ 438.779932][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 438.779932][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.779932][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.779932][ T72] ipv6_find_idev+0x102/0x170 [ 438.779932][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.779932][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.779932][ T72] netlink_rcv_skb+0x130/0x360 [ 438.779932][ T72] netlink_unicast+0x449/0x710 [ 438.779932][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.779932][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.779932][ T72] ___sys_sendmsg+0xee/0x170 [ 438.779932][ T72] __sys_sendmsg+0xcd/0x170 [ 438.779932][ T72] do_syscall_64+0xc6/0x1e0 [ 438.779932][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.779932][ T72] [ 438.782019][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 438.782296][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 438.782296][ T72] netdev_get_by_index+0x5e/0x80 [ 438.782296][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.782296][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.782296][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.782296][ T72] ipv6_add_addr+0x411/0x2000 [ 438.782296][ T72] inet6_addr_add+0x30e/0xa40 [ 438.782296][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.782296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.782296][ T72] netlink_rcv_skb+0x130/0x360 [ 438.782296][ T72] netlink_unicast+0x449/0x710 [ 438.782296][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.782296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.782296][ T72] ___sys_sendmsg+0xee/0x170 [ 438.782296][ T72] __sys_sendmsg+0xcd/0x170 [ 438.782296][ T72] do_syscall_64+0xc6/0x1e0 [ 438.782296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.782296][ T72] [ 438.784257][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 438.784257][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.784257][ T72] ipv6_find_idev+0x102/0x170 [ 438.784257][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.784257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.784257][ T72] netlink_rcv_skb+0x130/0x360 [ 438.784257][ T72] netlink_unicast+0x449/0x710 [ 438.784257][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.784257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.784257][ T72] ___sys_sendmsg+0xee/0x170 [ 438.784257][ T72] __sys_sendmsg+0xcd/0x170 [ 438.784257][ T72] do_syscall_64+0xc6/0x1e0 [ 438.784257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.784257][ T72] [ 438.785767][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 438.785767][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.785767][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.785767][ T72] ipv6_find_idev+0x102/0x170 [ 438.785767][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.785767][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.785767][ T72] netlink_rcv_skb+0x130/0x360 [ 438.785767][ T72] netlink_unicast+0x449/0x710 [ 438.785767][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.785767][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.785767][ T72] ___sys_sendmsg+0xee/0x170 [ 438.785767][ T72] __sys_sendmsg+0xcd/0x170 [ 438.785767][ T72] do_syscall_64+0xc6/0x1e0 [ 438.785767][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.785767][ T72] [ 438.787463][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 438.787749][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 438.787749][ T72] netdev_get_by_index+0x5e/0x80 [ 438.787749][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.787749][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.787749][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.787749][ T72] ipv6_add_addr+0x411/0x2000 [ 438.787749][ T72] inet6_addr_add+0x30e/0xa40 [ 438.787749][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.787749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.787749][ T72] netlink_rcv_skb+0x130/0x360 [ 438.787749][ T72] netlink_unicast+0x449/0x710 [ 438.787749][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.787749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.787749][ T72] ___sys_sendmsg+0xee/0x170 [ 438.787749][ T72] __sys_sendmsg+0xcd/0x170 [ 438.787749][ T72] do_syscall_64+0xc6/0x1e0 [ 438.787749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.787749][ T72] [ 438.789786][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 438.789786][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.789786][ T72] ipv6_find_idev+0x102/0x170 [ 438.789786][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.789786][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.789786][ T72] netlink_rcv_skb+0x130/0x360 [ 438.789786][ T72] netlink_unicast+0x449/0x710 [ 438.789786][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.789786][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.789786][ T72] ___sys_sendmsg+0xee/0x170 [ 438.789786][ T72] __sys_sendmsg+0xcd/0x170 [ 438.789786][ T72] do_syscall_64+0xc6/0x1e0 [ 438.789786][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.789786][ T72] [ 438.791419][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 438.791419][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.791419][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.791419][ T72] ipv6_find_idev+0x102/0x170 [ 438.791419][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.791419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.791419][ T72] netlink_rcv_skb+0x130/0x360 [ 438.791419][ T72] netlink_unicast+0x449/0x710 [ 438.791419][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.791419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.791419][ T72] ___sys_sendmsg+0xee/0x170 [ 438.791419][ T72] __sys_sendmsg+0xcd/0x170 [ 438.791419][ T72] do_syscall_64+0xc6/0x1e0 [ 438.791419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.791419][ T72] [ 438.793174][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 438.793431][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 438.793431][ T72] netdev_get_by_index+0x5e/0x80 [ 438.793431][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.793431][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.793431][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.793431][ T72] ipv6_add_addr+0x411/0x2000 [ 438.793431][ T72] inet6_addr_add+0x30e/0xa40 [ 438.793431][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.793431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.793431][ T72] netlink_rcv_skb+0x130/0x360 [ 438.793431][ T72] netlink_unicast+0x449/0x710 [ 438.793431][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.793431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.793431][ T72] ___sys_sendmsg+0xee/0x170 [ 438.793431][ T72] __sys_sendmsg+0xcd/0x170 [ 438.793431][ T72] do_syscall_64+0xc6/0x1e0 [ 438.793431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.793431][ T72] [ 438.795524][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 438.795524][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.795524][ T72] ipv6_find_idev+0x102/0x170 [ 438.795524][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.795524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.795524][ T72] netlink_rcv_skb+0x130/0x360 [ 438.795524][ T72] netlink_unicast+0x449/0x710 [ 438.795524][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.795524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.795524][ T72] ___sys_sendmsg+0xee/0x170 [ 438.795524][ T72] __sys_sendmsg+0xcd/0x170 [ 438.795524][ T72] do_syscall_64+0xc6/0x1e0 [ 438.795524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.795524][ T72] [ 438.797189][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 438.797189][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.797189][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.797189][ T72] ipv6_find_idev+0x102/0x170 [ 438.797189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.797189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.797189][ T72] netlink_rcv_skb+0x130/0x360 [ 438.797189][ T72] netlink_unicast+0x449/0x710 [ 438.797189][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.797189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.797189][ T72] ___sys_sendmsg+0xee/0x170 [ 438.797189][ T72] __sys_sendmsg+0xcd/0x170 [ 438.797189][ T72] do_syscall_64+0xc6/0x1e0 [ 438.797189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.797189][ T72] [ 438.798956][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 438.799216][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 438.799216][ T72] netdev_get_by_index+0x5e/0x80 [ 438.799216][ T72] fib6_nh_init+0x3d8/0x15b0 [ 438.799216][ T72] ip6_route_info_create+0xf18/0x17d0 [ 438.799216][ T72] addrconf_f6i_alloc+0x244/0x410 [ 438.799216][ T72] ipv6_add_addr+0x411/0x2000 [ 438.799216][ T72] inet6_addr_add+0x30e/0xa40 [ 438.799216][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 438.799216][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.799216][ T72] netlink_rcv_skb+0x130/0x360 [ 438.799216][ T72] netlink_unicast+0x449/0x710 [ 438.799216][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.799216][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.799216][ T72] ___sys_sendmsg+0xee/0x170 [ 438.799216][ T72] __sys_sendmsg+0xcd/0x170 [ 438.799216][ T72] do_syscall_64+0xc6/0x1e0 [ 438.799216][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.799216][ T72] [ 438.801310][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 438.801310][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 438.801310][ T72] ipv6_find_idev+0x102/0x170 [ 438.801310][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.801310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.801310][ T72] netlink_rcv_skb+0x130/0x360 [ 438.801310][ T72] netlink_unicast+0x449/0x710 [ 438.801310][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.801310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.801310][ T72] ___sys_sendmsg+0xee/0x170 [ 438.801310][ T72] __sys_sendmsg+0xcd/0x170 [ 438.801310][ T72] do_syscall_64+0xc6/0x1e0 [ 438.801310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.801310][ T72] [ 438.802949][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 438.802949][ T72] neigh_parms_alloc+0x1e5/0x510 [ 438.802949][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 438.802949][ T72] ipv6_find_idev+0x102/0x170 [ 438.802949][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 438.802949][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 438.802949][ T72] netlink_rcv_skb+0x130/0x360 [ 438.802949][ T72] netlink_unicast+0x449/0x710 [ 438.802949][ T72] netlink_sendmsg+0x723/0xbe0 [ 438.802949][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 438.802949][ T72] ___sys_sendmsg+0xee/0x170 [ 438.802949][ T72] __sys_sendmsg+0xcd/0x170 [ 438.802949][ T72] do_syscall_64+0xc6/0x1e0 [ 438.802949][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 438.802949][ T72] [ 448.934868][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 448.935343][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 448.935343][ T72] netdev_get_by_index+0x5e/0x80 [ 448.935343][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.935343][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.935343][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.935343][ T72] ipv6_add_addr+0x411/0x2000 [ 448.935343][ T72] inet6_addr_add+0x30e/0xa40 [ 448.935343][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.935343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.935343][ T72] netlink_rcv_skb+0x130/0x360 [ 448.935343][ T72] netlink_unicast+0x449/0x710 [ 448.935343][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.935343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.935343][ T72] ___sys_sendmsg+0xee/0x170 [ 448.935343][ T72] __sys_sendmsg+0xcd/0x170 [ 448.935343][ T72] do_syscall_64+0xc6/0x1e0 [ 448.935343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.935343][ T72] [ 448.937361][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 448.937361][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.937361][ T72] ipv6_find_idev+0x102/0x170 [ 448.937361][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.937361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.937361][ T72] netlink_rcv_skb+0x130/0x360 [ 448.937361][ T72] netlink_unicast+0x449/0x710 [ 448.937361][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.937361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.937361][ T72] ___sys_sendmsg+0xee/0x170 [ 448.937361][ T72] __sys_sendmsg+0xcd/0x170 [ 448.937361][ T72] do_syscall_64+0xc6/0x1e0 [ 448.937361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.937361][ T72] [ 448.938913][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 448.938913][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.938913][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.938913][ T72] ipv6_find_idev+0x102/0x170 [ 448.938913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.938913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.938913][ T72] netlink_rcv_skb+0x130/0x360 [ 448.938913][ T72] netlink_unicast+0x449/0x710 [ 448.938913][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.938913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.938913][ T72] ___sys_sendmsg+0xee/0x170 [ 448.938913][ T72] __sys_sendmsg+0xcd/0x170 [ 448.938913][ T72] do_syscall_64+0xc6/0x1e0 [ 448.938913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.938913][ T72] [ 448.940612][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 448.940902][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 448.940902][ T72] netdev_get_by_index+0x5e/0x80 [ 448.940902][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.940902][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.940902][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.940902][ T72] ipv6_add_addr+0x411/0x2000 [ 448.940902][ T72] inet6_addr_add+0x30e/0xa40 [ 448.940902][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.940902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.940902][ T72] netlink_rcv_skb+0x130/0x360 [ 448.940902][ T72] netlink_unicast+0x449/0x710 [ 448.940902][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.940902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.940902][ T72] ___sys_sendmsg+0xee/0x170 [ 448.940902][ T72] __sys_sendmsg+0xcd/0x170 [ 448.940902][ T72] do_syscall_64+0xc6/0x1e0 [ 448.940902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.940902][ T72] [ 448.942903][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 448.942903][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.942903][ T72] ipv6_find_idev+0x102/0x170 [ 448.942903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.942903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.942903][ T72] netlink_rcv_skb+0x130/0x360 [ 448.942903][ T72] netlink_unicast+0x449/0x710 [ 448.942903][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.942903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.942903][ T72] ___sys_sendmsg+0xee/0x170 [ 448.942903][ T72] __sys_sendmsg+0xcd/0x170 [ 448.942903][ T72] do_syscall_64+0xc6/0x1e0 [ 448.942903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.942903][ T72] [ 448.944441][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 448.944441][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.944441][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.944441][ T72] ipv6_find_idev+0x102/0x170 [ 448.944441][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.944441][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.944441][ T72] netlink_rcv_skb+0x130/0x360 [ 448.944441][ T72] netlink_unicast+0x449/0x710 [ 448.944441][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.944441][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.944441][ T72] ___sys_sendmsg+0xee/0x170 [ 448.944441][ T72] __sys_sendmsg+0xcd/0x170 [ 448.944441][ T72] do_syscall_64+0xc6/0x1e0 [ 448.944441][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.944441][ T72] [ 448.946128][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 448.946410][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 448.946410][ T72] netdev_get_by_index+0x5e/0x80 [ 448.946410][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.946410][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.946410][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.946410][ T72] ipv6_add_addr+0x411/0x2000 [ 448.946410][ T72] inet6_addr_add+0x30e/0xa40 [ 448.946410][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.946410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.946410][ T72] netlink_rcv_skb+0x130/0x360 [ 448.946410][ T72] netlink_unicast+0x449/0x710 [ 448.946410][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.946410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.946410][ T72] ___sys_sendmsg+0xee/0x170 [ 448.946410][ T72] __sys_sendmsg+0xcd/0x170 [ 448.946410][ T72] do_syscall_64+0xc6/0x1e0 [ 448.946410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.946410][ T72] [ 448.948396][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 448.948396][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.948396][ T72] ipv6_find_idev+0x102/0x170 [ 448.948396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.948396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.948396][ T72] netlink_rcv_skb+0x130/0x360 [ 448.948396][ T72] netlink_unicast+0x449/0x710 [ 448.948396][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.948396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.948396][ T72] ___sys_sendmsg+0xee/0x170 [ 448.948396][ T72] __sys_sendmsg+0xcd/0x170 [ 448.948396][ T72] do_syscall_64+0xc6/0x1e0 [ 448.948396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.948396][ T72] [ 448.949940][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 448.949940][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.949940][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.949940][ T72] ipv6_find_idev+0x102/0x170 [ 448.949940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.949940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.949940][ T72] netlink_rcv_skb+0x130/0x360 [ 448.949940][ T72] netlink_unicast+0x449/0x710 [ 448.949940][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.949940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.949940][ T72] ___sys_sendmsg+0xee/0x170 [ 448.949940][ T72] __sys_sendmsg+0xcd/0x170 [ 448.949940][ T72] do_syscall_64+0xc6/0x1e0 [ 448.949940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.949940][ T72] [ 448.951623][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 448.952317][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 448.952317][ T72] netdev_get_by_index+0x5e/0x80 [ 448.952317][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.952317][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.952317][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.952317][ T72] ipv6_add_addr+0x411/0x2000 [ 448.952317][ T72] inet6_addr_add+0x30e/0xa40 [ 448.952317][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.952317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.952317][ T72] netlink_rcv_skb+0x130/0x360 [ 448.952317][ T72] netlink_unicast+0x449/0x710 [ 448.952317][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.952317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.952317][ T72] ___sys_sendmsg+0xee/0x170 [ 448.952317][ T72] __sys_sendmsg+0xcd/0x170 [ 448.952317][ T72] do_syscall_64+0xc6/0x1e0 [ 448.952317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.952317][ T72] [ 448.954299][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 448.954299][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.954299][ T72] ipv6_find_idev+0x102/0x170 [ 448.954299][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.954299][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.954299][ T72] netlink_rcv_skb+0x130/0x360 [ 448.954299][ T72] netlink_unicast+0x449/0x710 [ 448.954299][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.954299][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.954299][ T72] ___sys_sendmsg+0xee/0x170 [ 448.954299][ T72] __sys_sendmsg+0xcd/0x170 [ 448.954299][ T72] do_syscall_64+0xc6/0x1e0 [ 448.954299][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.954299][ T72] [ 448.955840][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 448.955840][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.955840][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.955840][ T72] ipv6_find_idev+0x102/0x170 [ 448.955840][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.955840][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.955840][ T72] netlink_rcv_skb+0x130/0x360 [ 448.955840][ T72] netlink_unicast+0x449/0x710 [ 448.955840][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.955840][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.955840][ T72] ___sys_sendmsg+0xee/0x170 [ 448.955840][ T72] __sys_sendmsg+0xcd/0x170 [ 448.955840][ T72] do_syscall_64+0xc6/0x1e0 [ 448.955840][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.955840][ T72] [ 448.957584][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 448.957899][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 448.957899][ T72] netdev_get_by_index+0x5e/0x80 [ 448.957899][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.957899][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.957899][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.957899][ T72] ipv6_add_addr+0x411/0x2000 [ 448.957899][ T72] inet6_addr_add+0x30e/0xa40 [ 448.957899][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.957899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.957899][ T72] netlink_rcv_skb+0x130/0x360 [ 448.957899][ T72] netlink_unicast+0x449/0x710 [ 448.957899][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.957899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.957899][ T72] ___sys_sendmsg+0xee/0x170 [ 448.957899][ T72] __sys_sendmsg+0xcd/0x170 [ 448.957899][ T72] do_syscall_64+0xc6/0x1e0 [ 448.957899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.957899][ T72] [ 448.959935][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 448.959935][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.959935][ T72] ipv6_find_idev+0x102/0x170 [ 448.959935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.959935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.959935][ T72] netlink_rcv_skb+0x130/0x360 [ 448.959935][ T72] netlink_unicast+0x449/0x710 [ 448.959935][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.959935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.959935][ T72] ___sys_sendmsg+0xee/0x170 [ 448.959935][ T72] __sys_sendmsg+0xcd/0x170 [ 448.959935][ T72] do_syscall_64+0xc6/0x1e0 [ 448.959935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.959935][ T72] [ 448.961487][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 448.961487][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.961487][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.961487][ T72] ipv6_find_idev+0x102/0x170 [ 448.961487][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.961487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.961487][ T72] netlink_rcv_skb+0x130/0x360 [ 448.961487][ T72] netlink_unicast+0x449/0x710 [ 448.961487][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.961487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.961487][ T72] ___sys_sendmsg+0xee/0x170 [ 448.961487][ T72] __sys_sendmsg+0xcd/0x170 [ 448.961487][ T72] do_syscall_64+0xc6/0x1e0 [ 448.961487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.961487][ T72] [ 448.963222][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 448.963533][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 448.963533][ T72] netdev_get_by_index+0x5e/0x80 [ 448.963533][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.963533][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.963533][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.963533][ T72] ipv6_add_addr+0x411/0x2000 [ 448.963533][ T72] inet6_addr_add+0x30e/0xa40 [ 448.963533][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.963533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.963533][ T72] netlink_rcv_skb+0x130/0x360 [ 448.963533][ T72] netlink_unicast+0x449/0x710 [ 448.963533][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.963533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.963533][ T72] ___sys_sendmsg+0xee/0x170 [ 448.963533][ T72] __sys_sendmsg+0xcd/0x170 [ 448.963533][ T72] do_syscall_64+0xc6/0x1e0 [ 448.963533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.963533][ T72] [ 448.965541][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 448.965541][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.965541][ T72] ipv6_find_idev+0x102/0x170 [ 448.965541][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.965541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.965541][ T72] netlink_rcv_skb+0x130/0x360 [ 448.965541][ T72] netlink_unicast+0x449/0x710 [ 448.965541][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.965541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.965541][ T72] ___sys_sendmsg+0xee/0x170 [ 448.965541][ T72] __sys_sendmsg+0xcd/0x170 [ 448.965541][ T72] do_syscall_64+0xc6/0x1e0 [ 448.965541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.965541][ T72] [ 448.967277][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 448.967277][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.967277][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.967277][ T72] ipv6_find_idev+0x102/0x170 [ 448.967277][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.967277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.967277][ T72] netlink_rcv_skb+0x130/0x360 [ 448.967277][ T72] netlink_unicast+0x449/0x710 [ 448.967277][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.967277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.967277][ T72] ___sys_sendmsg+0xee/0x170 [ 448.967277][ T72] __sys_sendmsg+0xcd/0x170 [ 448.967277][ T72] do_syscall_64+0xc6/0x1e0 [ 448.967277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.967277][ T72] [ 448.969262][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 448.969574][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 448.969574][ T72] netdev_get_by_index+0x5e/0x80 [ 448.969574][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.969574][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.969574][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.969574][ T72] ipv6_add_addr+0x411/0x2000 [ 448.969574][ T72] inet6_addr_add+0x30e/0xa40 [ 448.969574][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.969574][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.969574][ T72] netlink_rcv_skb+0x130/0x360 [ 448.969574][ T72] netlink_unicast+0x449/0x710 [ 448.969574][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.969574][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.969574][ T72] ___sys_sendmsg+0xee/0x170 [ 448.969574][ T72] __sys_sendmsg+0xcd/0x170 [ 448.969574][ T72] do_syscall_64+0xc6/0x1e0 [ 448.969574][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.969574][ T72] [ 448.971746][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 448.971746][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.971746][ T72] ipv6_find_idev+0x102/0x170 [ 448.971746][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.971746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.971746][ T72] netlink_rcv_skb+0x130/0x360 [ 448.971746][ T72] netlink_unicast+0x449/0x710 [ 448.971746][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.971746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.971746][ T72] ___sys_sendmsg+0xee/0x170 [ 448.971746][ T72] __sys_sendmsg+0xcd/0x170 [ 448.971746][ T72] do_syscall_64+0xc6/0x1e0 [ 448.971746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.971746][ T72] [ 448.973461][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 448.973461][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.973461][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.973461][ T72] ipv6_find_idev+0x102/0x170 [ 448.973461][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.973461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.973461][ T72] netlink_rcv_skb+0x130/0x360 [ 448.973461][ T72] netlink_unicast+0x449/0x710 [ 448.973461][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.973461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.973461][ T72] ___sys_sendmsg+0xee/0x170 [ 448.973461][ T72] __sys_sendmsg+0xcd/0x170 [ 448.973461][ T72] do_syscall_64+0xc6/0x1e0 [ 448.973461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.973461][ T72] [ 448.975427][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 448.975749][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 448.975749][ T72] netdev_get_by_index+0x5e/0x80 [ 448.975749][ T72] fib6_nh_init+0x3d8/0x15b0 [ 448.975749][ T72] ip6_route_info_create+0xf18/0x17d0 [ 448.975749][ T72] addrconf_f6i_alloc+0x244/0x410 [ 448.975749][ T72] ipv6_add_addr+0x411/0x2000 [ 448.975749][ T72] inet6_addr_add+0x30e/0xa40 [ 448.975749][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 448.975749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.975749][ T72] netlink_rcv_skb+0x130/0x360 [ 448.975749][ T72] netlink_unicast+0x449/0x710 [ 448.975749][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.975749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.975749][ T72] ___sys_sendmsg+0xee/0x170 [ 448.975749][ T72] __sys_sendmsg+0xcd/0x170 [ 448.975749][ T72] do_syscall_64+0xc6/0x1e0 [ 448.975749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.975749][ T72] [ 448.977922][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 448.977922][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 448.977922][ T72] ipv6_find_idev+0x102/0x170 [ 448.977922][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.977922][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.977922][ T72] netlink_rcv_skb+0x130/0x360 [ 448.977922][ T72] netlink_unicast+0x449/0x710 [ 448.977922][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.977922][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.977922][ T72] ___sys_sendmsg+0xee/0x170 [ 448.977922][ T72] __sys_sendmsg+0xcd/0x170 [ 448.977922][ T72] do_syscall_64+0xc6/0x1e0 [ 448.977922][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.977922][ T72] [ 448.979696][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 448.979696][ T72] neigh_parms_alloc+0x1e5/0x510 [ 448.979696][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 448.979696][ T72] ipv6_find_idev+0x102/0x170 [ 448.979696][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 448.979696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 448.979696][ T72] netlink_rcv_skb+0x130/0x360 [ 448.979696][ T72] netlink_unicast+0x449/0x710 [ 448.979696][ T72] netlink_sendmsg+0x723/0xbe0 [ 448.979696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 448.979696][ T72] ___sys_sendmsg+0xee/0x170 [ 448.979696][ T72] __sys_sendmsg+0xcd/0x170 [ 448.979696][ T72] do_syscall_64+0xc6/0x1e0 [ 448.979696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 448.979696][ T72] [ 459.222960][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 459.223461][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 459.223461][ T72] netdev_get_by_index+0x5e/0x80 [ 459.223461][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.223461][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.223461][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.223461][ T72] ipv6_add_addr+0x411/0x2000 [ 459.223461][ T72] inet6_addr_add+0x30e/0xa40 [ 459.223461][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.223461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.223461][ T72] netlink_rcv_skb+0x130/0x360 [ 459.223461][ T72] netlink_unicast+0x449/0x710 [ 459.223461][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.223461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.223461][ T72] ___sys_sendmsg+0xee/0x170 [ 459.223461][ T72] __sys_sendmsg+0xcd/0x170 [ 459.223461][ T72] do_syscall_64+0xc6/0x1e0 [ 459.223461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.223461][ T72] [ 459.225483][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 459.225483][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.225483][ T72] ipv6_find_idev+0x102/0x170 [ 459.225483][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.225483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.225483][ T72] netlink_rcv_skb+0x130/0x360 [ 459.225483][ T72] netlink_unicast+0x449/0x710 [ 459.225483][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.225483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.225483][ T72] ___sys_sendmsg+0xee/0x170 [ 459.225483][ T72] __sys_sendmsg+0xcd/0x170 [ 459.225483][ T72] do_syscall_64+0xc6/0x1e0 [ 459.225483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.225483][ T72] [ 459.227027][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 459.227027][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.227027][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.227027][ T72] ipv6_find_idev+0x102/0x170 [ 459.227027][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.227027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.227027][ T72] netlink_rcv_skb+0x130/0x360 [ 459.227027][ T72] netlink_unicast+0x449/0x710 [ 459.227027][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.227027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.227027][ T72] ___sys_sendmsg+0xee/0x170 [ 459.227027][ T72] __sys_sendmsg+0xcd/0x170 [ 459.227027][ T72] do_syscall_64+0xc6/0x1e0 [ 459.227027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.227027][ T72] [ 459.228779][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 459.229087][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 459.229087][ T72] netdev_get_by_index+0x5e/0x80 [ 459.229087][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.229087][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.229087][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.229087][ T72] ipv6_add_addr+0x411/0x2000 [ 459.229087][ T72] inet6_addr_add+0x30e/0xa40 [ 459.229087][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.229087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.229087][ T72] netlink_rcv_skb+0x130/0x360 [ 459.229087][ T72] netlink_unicast+0x449/0x710 [ 459.229087][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.229087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.229087][ T72] ___sys_sendmsg+0xee/0x170 [ 459.229087][ T72] __sys_sendmsg+0xcd/0x170 [ 459.229087][ T72] do_syscall_64+0xc6/0x1e0 [ 459.229087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.229087][ T72] [ 459.231093][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 459.231093][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.231093][ T72] ipv6_find_idev+0x102/0x170 [ 459.231093][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.231093][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.231093][ T72] netlink_rcv_skb+0x130/0x360 [ 459.231093][ T72] netlink_unicast+0x449/0x710 [ 459.231093][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.231093][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.231093][ T72] ___sys_sendmsg+0xee/0x170 [ 459.231093][ T72] __sys_sendmsg+0xcd/0x170 [ 459.231093][ T72] do_syscall_64+0xc6/0x1e0 [ 459.231093][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.231093][ T72] [ 459.232624][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 459.232624][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.232624][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.232624][ T72] ipv6_find_idev+0x102/0x170 [ 459.232624][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.232624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.232624][ T72] netlink_rcv_skb+0x130/0x360 [ 459.232624][ T72] netlink_unicast+0x449/0x710 [ 459.232624][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.232624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.232624][ T72] ___sys_sendmsg+0xee/0x170 [ 459.232624][ T72] __sys_sendmsg+0xcd/0x170 [ 459.232624][ T72] do_syscall_64+0xc6/0x1e0 [ 459.232624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.232624][ T72] [ 459.234330][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 459.234603][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 459.234603][ T72] netdev_get_by_index+0x5e/0x80 [ 459.234603][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.234603][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.234603][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.234603][ T72] ipv6_add_addr+0x411/0x2000 [ 459.234603][ T72] inet6_addr_add+0x30e/0xa40 [ 459.234603][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.234603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.234603][ T72] netlink_rcv_skb+0x130/0x360 [ 459.234603][ T72] netlink_unicast+0x449/0x710 [ 459.234603][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.234603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.234603][ T72] ___sys_sendmsg+0xee/0x170 [ 459.234603][ T72] __sys_sendmsg+0xcd/0x170 [ 459.234603][ T72] do_syscall_64+0xc6/0x1e0 [ 459.234603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.234603][ T72] [ 459.236591][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 459.236591][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.236591][ T72] ipv6_find_idev+0x102/0x170 [ 459.236591][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.236591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.236591][ T72] netlink_rcv_skb+0x130/0x360 [ 459.236591][ T72] netlink_unicast+0x449/0x710 [ 459.236591][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.236591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.236591][ T72] ___sys_sendmsg+0xee/0x170 [ 459.236591][ T72] __sys_sendmsg+0xcd/0x170 [ 459.236591][ T72] do_syscall_64+0xc6/0x1e0 [ 459.236591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.236591][ T72] [ 459.238133][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 459.238133][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.238133][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.238133][ T72] ipv6_find_idev+0x102/0x170 [ 459.238133][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.238133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.238133][ T72] netlink_rcv_skb+0x130/0x360 [ 459.238133][ T72] netlink_unicast+0x449/0x710 [ 459.238133][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.238133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.238133][ T72] ___sys_sendmsg+0xee/0x170 [ 459.238133][ T72] __sys_sendmsg+0xcd/0x170 [ 459.238133][ T72] do_syscall_64+0xc6/0x1e0 [ 459.238133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.238133][ T72] [ 459.239841][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 459.240110][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 459.240110][ T72] netdev_get_by_index+0x5e/0x80 [ 459.240110][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.240110][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.240110][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.240110][ T72] ipv6_add_addr+0x411/0x2000 [ 459.240110][ T72] inet6_addr_add+0x30e/0xa40 [ 459.240110][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.240110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.240110][ T72] netlink_rcv_skb+0x130/0x360 [ 459.240110][ T72] netlink_unicast+0x449/0x710 [ 459.240110][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.240110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.240110][ T72] ___sys_sendmsg+0xee/0x170 [ 459.240110][ T72] __sys_sendmsg+0xcd/0x170 [ 459.240110][ T72] do_syscall_64+0xc6/0x1e0 [ 459.240110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.240110][ T72] [ 459.242104][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 459.242104][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.242104][ T72] ipv6_find_idev+0x102/0x170 [ 459.242104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.242104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.242104][ T72] netlink_rcv_skb+0x130/0x360 [ 459.242104][ T72] netlink_unicast+0x449/0x710 [ 459.242104][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.242104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.242104][ T72] ___sys_sendmsg+0xee/0x170 [ 459.242104][ T72] __sys_sendmsg+0xcd/0x170 [ 459.242104][ T72] do_syscall_64+0xc6/0x1e0 [ 459.242104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.242104][ T72] [ 459.243643][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 459.243643][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.243643][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.243643][ T72] ipv6_find_idev+0x102/0x170 [ 459.243643][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.243643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.243643][ T72] netlink_rcv_skb+0x130/0x360 [ 459.243643][ T72] netlink_unicast+0x449/0x710 [ 459.243643][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.243643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.243643][ T72] ___sys_sendmsg+0xee/0x170 [ 459.243643][ T72] __sys_sendmsg+0xcd/0x170 [ 459.243643][ T72] do_syscall_64+0xc6/0x1e0 [ 459.243643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.243643][ T72] [ 459.245753][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 459.246358][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 459.246358][ T72] netdev_get_by_index+0x5e/0x80 [ 459.246358][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.246358][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.246358][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.246358][ T72] ipv6_add_addr+0x411/0x2000 [ 459.246358][ T72] inet6_addr_add+0x30e/0xa40 [ 459.246358][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.246358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.246358][ T72] netlink_rcv_skb+0x130/0x360 [ 459.246358][ T72] netlink_unicast+0x449/0x710 [ 459.246358][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.246358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.246358][ T72] ___sys_sendmsg+0xee/0x170 [ 459.246358][ T72] __sys_sendmsg+0xcd/0x170 [ 459.246358][ T72] do_syscall_64+0xc6/0x1e0 [ 459.246358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.246358][ T72] [ 459.248340][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 459.248340][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.248340][ T72] ipv6_find_idev+0x102/0x170 [ 459.248340][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.248340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.248340][ T72] netlink_rcv_skb+0x130/0x360 [ 459.248340][ T72] netlink_unicast+0x449/0x710 [ 459.248340][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.248340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.248340][ T72] ___sys_sendmsg+0xee/0x170 [ 459.248340][ T72] __sys_sendmsg+0xcd/0x170 [ 459.248340][ T72] do_syscall_64+0xc6/0x1e0 [ 459.248340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.248340][ T72] [ 459.249889][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 459.249889][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.249889][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.249889][ T72] ipv6_find_idev+0x102/0x170 [ 459.249889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.249889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.249889][ T72] netlink_rcv_skb+0x130/0x360 [ 459.249889][ T72] netlink_unicast+0x449/0x710 [ 459.249889][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.249889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.249889][ T72] ___sys_sendmsg+0xee/0x170 [ 459.249889][ T72] __sys_sendmsg+0xcd/0x170 [ 459.249889][ T72] do_syscall_64+0xc6/0x1e0 [ 459.249889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.249889][ T72] [ 459.251582][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 459.251912][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 459.251912][ T72] netdev_get_by_index+0x5e/0x80 [ 459.251912][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.251912][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.251912][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.251912][ T72] ipv6_add_addr+0x411/0x2000 [ 459.251912][ T72] inet6_addr_add+0x30e/0xa40 [ 459.251912][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.251912][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.251912][ T72] netlink_rcv_skb+0x130/0x360 [ 459.251912][ T72] netlink_unicast+0x449/0x710 [ 459.251912][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.251912][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.251912][ T72] ___sys_sendmsg+0xee/0x170 [ 459.251912][ T72] __sys_sendmsg+0xcd/0x170 [ 459.251912][ T72] do_syscall_64+0xc6/0x1e0 [ 459.251912][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.251912][ T72] [ 459.253917][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 459.253917][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.253917][ T72] ipv6_find_idev+0x102/0x170 [ 459.253917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.253917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.253917][ T72] netlink_rcv_skb+0x130/0x360 [ 459.253917][ T72] netlink_unicast+0x449/0x710 [ 459.253917][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.253917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.253917][ T72] ___sys_sendmsg+0xee/0x170 [ 459.253917][ T72] __sys_sendmsg+0xcd/0x170 [ 459.253917][ T72] do_syscall_64+0xc6/0x1e0 [ 459.253917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.253917][ T72] [ 459.255467][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 459.255467][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.255467][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.255467][ T72] ipv6_find_idev+0x102/0x170 [ 459.255467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.255467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.255467][ T72] netlink_rcv_skb+0x130/0x360 [ 459.255467][ T72] netlink_unicast+0x449/0x710 [ 459.255467][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.255467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.255467][ T72] ___sys_sendmsg+0xee/0x170 [ 459.255467][ T72] __sys_sendmsg+0xcd/0x170 [ 459.255467][ T72] do_syscall_64+0xc6/0x1e0 [ 459.255467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.255467][ T72] [ 459.257432][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 459.257748][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 459.257748][ T72] netdev_get_by_index+0x5e/0x80 [ 459.257748][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.257748][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.257748][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.257748][ T72] ipv6_add_addr+0x411/0x2000 [ 459.257748][ T72] inet6_addr_add+0x30e/0xa40 [ 459.257748][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.257748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.257748][ T72] netlink_rcv_skb+0x130/0x360 [ 459.257748][ T72] netlink_unicast+0x449/0x710 [ 459.257748][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.257748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.257748][ T72] ___sys_sendmsg+0xee/0x170 [ 459.257748][ T72] __sys_sendmsg+0xcd/0x170 [ 459.257748][ T72] do_syscall_64+0xc6/0x1e0 [ 459.257748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.257748][ T72] [ 459.260003][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 459.260003][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.260003][ T72] ipv6_find_idev+0x102/0x170 [ 459.260003][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.260003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.260003][ T72] netlink_rcv_skb+0x130/0x360 [ 459.260003][ T72] netlink_unicast+0x449/0x710 [ 459.260003][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.260003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.260003][ T72] ___sys_sendmsg+0xee/0x170 [ 459.260003][ T72] __sys_sendmsg+0xcd/0x170 [ 459.260003][ T72] do_syscall_64+0xc6/0x1e0 [ 459.260003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.260003][ T72] [ 459.261716][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 459.261716][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.261716][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.261716][ T72] ipv6_find_idev+0x102/0x170 [ 459.261716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.261716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.261716][ T72] netlink_rcv_skb+0x130/0x360 [ 459.261716][ T72] netlink_unicast+0x449/0x710 [ 459.261716][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.261716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.261716][ T72] ___sys_sendmsg+0xee/0x170 [ 459.261716][ T72] __sys_sendmsg+0xcd/0x170 [ 459.261716][ T72] do_syscall_64+0xc6/0x1e0 [ 459.261716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.261716][ T72] [ 459.263629][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 459.263961][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 459.263961][ T72] netdev_get_by_index+0x5e/0x80 [ 459.263961][ T72] fib6_nh_init+0x3d8/0x15b0 [ 459.263961][ T72] ip6_route_info_create+0xf18/0x17d0 [ 459.263961][ T72] addrconf_f6i_alloc+0x244/0x410 [ 459.263961][ T72] ipv6_add_addr+0x411/0x2000 [ 459.263961][ T72] inet6_addr_add+0x30e/0xa40 [ 459.263961][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 459.263961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.263961][ T72] netlink_rcv_skb+0x130/0x360 [ 459.263961][ T72] netlink_unicast+0x449/0x710 [ 459.263961][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.263961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.263961][ T72] ___sys_sendmsg+0xee/0x170 [ 459.263961][ T72] __sys_sendmsg+0xcd/0x170 [ 459.263961][ T72] do_syscall_64+0xc6/0x1e0 [ 459.263961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.263961][ T72] [ 459.266159][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 459.266159][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 459.266159][ T72] ipv6_find_idev+0x102/0x170 [ 459.266159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.266159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.266159][ T72] netlink_rcv_skb+0x130/0x360 [ 459.266159][ T72] netlink_unicast+0x449/0x710 [ 459.266159][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.266159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.266159][ T72] ___sys_sendmsg+0xee/0x170 [ 459.266159][ T72] __sys_sendmsg+0xcd/0x170 [ 459.266159][ T72] do_syscall_64+0xc6/0x1e0 [ 459.266159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.266159][ T72] [ 459.267896][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 459.267896][ T72] neigh_parms_alloc+0x1e5/0x510 [ 459.267896][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 459.267896][ T72] ipv6_find_idev+0x102/0x170 [ 459.267896][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 459.267896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 459.267896][ T72] netlink_rcv_skb+0x130/0x360 [ 459.267896][ T72] netlink_unicast+0x449/0x710 [ 459.267896][ T72] netlink_sendmsg+0x723/0xbe0 [ 459.267896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 459.267896][ T72] ___sys_sendmsg+0xee/0x170 [ 459.267896][ T72] __sys_sendmsg+0xcd/0x170 [ 459.267896][ T72] do_syscall_64+0xc6/0x1e0 [ 459.267896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 459.267896][ T72] [ 469.510840][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 469.511245][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 469.511245][ T72] netdev_get_by_index+0x5e/0x80 [ 469.511245][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.511245][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.511245][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.511245][ T72] ipv6_add_addr+0x411/0x2000 [ 469.511245][ T72] inet6_addr_add+0x30e/0xa40 [ 469.511245][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.511245][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.511245][ T72] netlink_rcv_skb+0x130/0x360 [ 469.511245][ T72] netlink_unicast+0x449/0x710 [ 469.511245][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.511245][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.511245][ T72] ___sys_sendmsg+0xee/0x170 [ 469.511245][ T72] __sys_sendmsg+0xcd/0x170 [ 469.511245][ T72] do_syscall_64+0xc6/0x1e0 [ 469.511245][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.511245][ T72] [ 469.513276][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 469.513276][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.513276][ T72] ipv6_find_idev+0x102/0x170 [ 469.513276][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.513276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.513276][ T72] netlink_rcv_skb+0x130/0x360 [ 469.513276][ T72] netlink_unicast+0x449/0x710 [ 469.513276][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.513276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.513276][ T72] ___sys_sendmsg+0xee/0x170 [ 469.513276][ T72] __sys_sendmsg+0xcd/0x170 [ 469.513276][ T72] do_syscall_64+0xc6/0x1e0 [ 469.513276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.513276][ T72] [ 469.514840][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 469.514840][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.514840][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.514840][ T72] ipv6_find_idev+0x102/0x170 [ 469.514840][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.514840][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.514840][ T72] netlink_rcv_skb+0x130/0x360 [ 469.514840][ T72] netlink_unicast+0x449/0x710 [ 469.514840][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.514840][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.514840][ T72] ___sys_sendmsg+0xee/0x170 [ 469.514840][ T72] __sys_sendmsg+0xcd/0x170 [ 469.514840][ T72] do_syscall_64+0xc6/0x1e0 [ 469.514840][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.514840][ T72] [ 469.516551][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 469.516851][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 469.516851][ T72] netdev_get_by_index+0x5e/0x80 [ 469.516851][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.516851][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.516851][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.516851][ T72] ipv6_add_addr+0x411/0x2000 [ 469.516851][ T72] inet6_addr_add+0x30e/0xa40 [ 469.516851][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.516851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.516851][ T72] netlink_rcv_skb+0x130/0x360 [ 469.516851][ T72] netlink_unicast+0x449/0x710 [ 469.516851][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.516851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.516851][ T72] ___sys_sendmsg+0xee/0x170 [ 469.516851][ T72] __sys_sendmsg+0xcd/0x170 [ 469.516851][ T72] do_syscall_64+0xc6/0x1e0 [ 469.516851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.516851][ T72] [ 469.518873][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 469.518873][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.518873][ T72] ipv6_find_idev+0x102/0x170 [ 469.518873][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.518873][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.518873][ T72] netlink_rcv_skb+0x130/0x360 [ 469.518873][ T72] netlink_unicast+0x449/0x710 [ 469.518873][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.518873][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.518873][ T72] ___sys_sendmsg+0xee/0x170 [ 469.518873][ T72] __sys_sendmsg+0xcd/0x170 [ 469.518873][ T72] do_syscall_64+0xc6/0x1e0 [ 469.518873][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.518873][ T72] [ 469.520411][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 469.520411][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.520411][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.520411][ T72] ipv6_find_idev+0x102/0x170 [ 469.520411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.520411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.520411][ T72] netlink_rcv_skb+0x130/0x360 [ 469.520411][ T72] netlink_unicast+0x449/0x710 [ 469.520411][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.520411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.520411][ T72] ___sys_sendmsg+0xee/0x170 [ 469.520411][ T72] __sys_sendmsg+0xcd/0x170 [ 469.520411][ T72] do_syscall_64+0xc6/0x1e0 [ 469.520411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.520411][ T72] [ 469.522117][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 469.522393][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 469.522393][ T72] netdev_get_by_index+0x5e/0x80 [ 469.522393][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.522393][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.522393][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.522393][ T72] ipv6_add_addr+0x411/0x2000 [ 469.522393][ T72] inet6_addr_add+0x30e/0xa40 [ 469.522393][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.522393][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.522393][ T72] netlink_rcv_skb+0x130/0x360 [ 469.522393][ T72] netlink_unicast+0x449/0x710 [ 469.522393][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.522393][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.522393][ T72] ___sys_sendmsg+0xee/0x170 [ 469.522393][ T72] __sys_sendmsg+0xcd/0x170 [ 469.522393][ T72] do_syscall_64+0xc6/0x1e0 [ 469.522393][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.522393][ T72] [ 469.524389][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 469.524389][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.524389][ T72] ipv6_find_idev+0x102/0x170 [ 469.524389][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.524389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.524389][ T72] netlink_rcv_skb+0x130/0x360 [ 469.524389][ T72] netlink_unicast+0x449/0x710 [ 469.524389][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.524389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.524389][ T72] ___sys_sendmsg+0xee/0x170 [ 469.524389][ T72] __sys_sendmsg+0xcd/0x170 [ 469.524389][ T72] do_syscall_64+0xc6/0x1e0 [ 469.524389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.524389][ T72] [ 469.525925][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 469.525925][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.525925][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.525925][ T72] ipv6_find_idev+0x102/0x170 [ 469.525925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.525925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.525925][ T72] netlink_rcv_skb+0x130/0x360 [ 469.525925][ T72] netlink_unicast+0x449/0x710 [ 469.525925][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.525925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.525925][ T72] ___sys_sendmsg+0xee/0x170 [ 469.525925][ T72] __sys_sendmsg+0xcd/0x170 [ 469.525925][ T72] do_syscall_64+0xc6/0x1e0 [ 469.525925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.525925][ T72] [ 469.527599][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 469.528314][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 469.528314][ T72] netdev_get_by_index+0x5e/0x80 [ 469.528314][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.528314][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.528314][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.528314][ T72] ipv6_add_addr+0x411/0x2000 [ 469.528314][ T72] inet6_addr_add+0x30e/0xa40 [ 469.528314][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.528314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.528314][ T72] netlink_rcv_skb+0x130/0x360 [ 469.528314][ T72] netlink_unicast+0x449/0x710 [ 469.528314][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.528314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.528314][ T72] ___sys_sendmsg+0xee/0x170 [ 469.528314][ T72] __sys_sendmsg+0xcd/0x170 [ 469.528314][ T72] do_syscall_64+0xc6/0x1e0 [ 469.528314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.528314][ T72] [ 469.530320][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 469.530320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.530320][ T72] ipv6_find_idev+0x102/0x170 [ 469.530320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.530320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.530320][ T72] netlink_rcv_skb+0x130/0x360 [ 469.530320][ T72] netlink_unicast+0x449/0x710 [ 469.530320][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.530320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.530320][ T72] ___sys_sendmsg+0xee/0x170 [ 469.530320][ T72] __sys_sendmsg+0xcd/0x170 [ 469.530320][ T72] do_syscall_64+0xc6/0x1e0 [ 469.530320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.530320][ T72] [ 469.531868][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 469.531868][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.531868][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.531868][ T72] ipv6_find_idev+0x102/0x170 [ 469.531868][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.531868][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.531868][ T72] netlink_rcv_skb+0x130/0x360 [ 469.531868][ T72] netlink_unicast+0x449/0x710 [ 469.531868][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.531868][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.531868][ T72] ___sys_sendmsg+0xee/0x170 [ 469.531868][ T72] __sys_sendmsg+0xcd/0x170 [ 469.531868][ T72] do_syscall_64+0xc6/0x1e0 [ 469.531868][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.531868][ T72] [ 469.533589][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 469.533917][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 469.533917][ T72] netdev_get_by_index+0x5e/0x80 [ 469.533917][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.533917][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.533917][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.533917][ T72] ipv6_add_addr+0x411/0x2000 [ 469.533917][ T72] inet6_addr_add+0x30e/0xa40 [ 469.533917][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.533917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.533917][ T72] netlink_rcv_skb+0x130/0x360 [ 469.533917][ T72] netlink_unicast+0x449/0x710 [ 469.533917][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.533917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.533917][ T72] ___sys_sendmsg+0xee/0x170 [ 469.533917][ T72] __sys_sendmsg+0xcd/0x170 [ 469.533917][ T72] do_syscall_64+0xc6/0x1e0 [ 469.533917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.533917][ T72] [ 469.535907][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 469.535907][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.535907][ T72] ipv6_find_idev+0x102/0x170 [ 469.535907][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.535907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.535907][ T72] netlink_rcv_skb+0x130/0x360 [ 469.535907][ T72] netlink_unicast+0x449/0x710 [ 469.535907][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.535907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.535907][ T72] ___sys_sendmsg+0xee/0x170 [ 469.535907][ T72] __sys_sendmsg+0xcd/0x170 [ 469.535907][ T72] do_syscall_64+0xc6/0x1e0 [ 469.535907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.535907][ T72] [ 469.537447][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 469.537447][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.537447][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.537447][ T72] ipv6_find_idev+0x102/0x170 [ 469.537447][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.537447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.537447][ T72] netlink_rcv_skb+0x130/0x360 [ 469.537447][ T72] netlink_unicast+0x449/0x710 [ 469.537447][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.537447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.537447][ T72] ___sys_sendmsg+0xee/0x170 [ 469.537447][ T72] __sys_sendmsg+0xcd/0x170 [ 469.537447][ T72] do_syscall_64+0xc6/0x1e0 [ 469.537447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.537447][ T72] [ 469.539186][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 469.539496][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 469.539496][ T72] netdev_get_by_index+0x5e/0x80 [ 469.539496][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.539496][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.539496][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.539496][ T72] ipv6_add_addr+0x411/0x2000 [ 469.539496][ T72] inet6_addr_add+0x30e/0xa40 [ 469.539496][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.539496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.539496][ T72] netlink_rcv_skb+0x130/0x360 [ 469.539496][ T72] netlink_unicast+0x449/0x710 [ 469.539496][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.539496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.539496][ T72] ___sys_sendmsg+0xee/0x170 [ 469.539496][ T72] __sys_sendmsg+0xcd/0x170 [ 469.539496][ T72] do_syscall_64+0xc6/0x1e0 [ 469.539496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.539496][ T72] [ 469.541483][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 469.541483][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.541483][ T72] ipv6_find_idev+0x102/0x170 [ 469.541483][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.541483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.541483][ T72] netlink_rcv_skb+0x130/0x360 [ 469.541483][ T72] netlink_unicast+0x449/0x710 [ 469.541483][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.541483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.541483][ T72] ___sys_sendmsg+0xee/0x170 [ 469.541483][ T72] __sys_sendmsg+0xcd/0x170 [ 469.541483][ T72] do_syscall_64+0xc6/0x1e0 [ 469.541483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.541483][ T72] [ 469.543148][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 469.543148][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.543148][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.543148][ T72] ipv6_find_idev+0x102/0x170 [ 469.543148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.543148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.543148][ T72] netlink_rcv_skb+0x130/0x360 [ 469.543148][ T72] netlink_unicast+0x449/0x710 [ 469.543148][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.543148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.543148][ T72] ___sys_sendmsg+0xee/0x170 [ 469.543148][ T72] __sys_sendmsg+0xcd/0x170 [ 469.543148][ T72] do_syscall_64+0xc6/0x1e0 [ 469.543148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.543148][ T72] [ 469.544957][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 469.545266][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 469.545266][ T72] netdev_get_by_index+0x5e/0x80 [ 469.545266][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.545266][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.545266][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.545266][ T72] ipv6_add_addr+0x411/0x2000 [ 469.545266][ T72] inet6_addr_add+0x30e/0xa40 [ 469.545266][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.545266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.545266][ T72] netlink_rcv_skb+0x130/0x360 [ 469.545266][ T72] netlink_unicast+0x449/0x710 [ 469.545266][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.545266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.545266][ T72] ___sys_sendmsg+0xee/0x170 [ 469.545266][ T72] __sys_sendmsg+0xcd/0x170 [ 469.545266][ T72] do_syscall_64+0xc6/0x1e0 [ 469.545266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.545266][ T72] [ 469.547414][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 469.547414][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.547414][ T72] ipv6_find_idev+0x102/0x170 [ 469.547414][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.547414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.547414][ T72] netlink_rcv_skb+0x130/0x360 [ 469.547414][ T72] netlink_unicast+0x449/0x710 [ 469.547414][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.547414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.547414][ T72] ___sys_sendmsg+0xee/0x170 [ 469.547414][ T72] __sys_sendmsg+0xcd/0x170 [ 469.547414][ T72] do_syscall_64+0xc6/0x1e0 [ 469.547414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.547414][ T72] [ 469.549095][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 469.549095][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.549095][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.549095][ T72] ipv6_find_idev+0x102/0x170 [ 469.549095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.549095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.549095][ T72] netlink_rcv_skb+0x130/0x360 [ 469.549095][ T72] netlink_unicast+0x449/0x710 [ 469.549095][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.549095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.549095][ T72] ___sys_sendmsg+0xee/0x170 [ 469.549095][ T72] __sys_sendmsg+0xcd/0x170 [ 469.549095][ T72] do_syscall_64+0xc6/0x1e0 [ 469.549095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.549095][ T72] [ 469.550946][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 469.551269][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 469.551269][ T72] netdev_get_by_index+0x5e/0x80 [ 469.551269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 469.551269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 469.551269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 469.551269][ T72] ipv6_add_addr+0x411/0x2000 [ 469.551269][ T72] inet6_addr_add+0x30e/0xa40 [ 469.551269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 469.551269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.551269][ T72] netlink_rcv_skb+0x130/0x360 [ 469.551269][ T72] netlink_unicast+0x449/0x710 [ 469.551269][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.551269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.551269][ T72] ___sys_sendmsg+0xee/0x170 [ 469.551269][ T72] __sys_sendmsg+0xcd/0x170 [ 469.551269][ T72] do_syscall_64+0xc6/0x1e0 [ 469.551269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.551269][ T72] [ 469.553317][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 469.553317][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 469.553317][ T72] ipv6_find_idev+0x102/0x170 [ 469.553317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.553317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.553317][ T72] netlink_rcv_skb+0x130/0x360 [ 469.553317][ T72] netlink_unicast+0x449/0x710 [ 469.553317][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.553317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.553317][ T72] ___sys_sendmsg+0xee/0x170 [ 469.553317][ T72] __sys_sendmsg+0xcd/0x170 [ 469.553317][ T72] do_syscall_64+0xc6/0x1e0 [ 469.553317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.553317][ T72] [ 469.554977][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 469.554977][ T72] neigh_parms_alloc+0x1e5/0x510 [ 469.554977][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 469.554977][ T72] ipv6_find_idev+0x102/0x170 [ 469.554977][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 469.554977][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 469.554977][ T72] netlink_rcv_skb+0x130/0x360 [ 469.554977][ T72] netlink_unicast+0x449/0x710 [ 469.554977][ T72] netlink_sendmsg+0x723/0xbe0 [ 469.554977][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 469.554977][ T72] ___sys_sendmsg+0xee/0x170 [ 469.554977][ T72] __sys_sendmsg+0xcd/0x170 [ 469.554977][ T72] do_syscall_64+0xc6/0x1e0 [ 469.554977][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 469.554977][ T72] [ 479.798830][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 479.799259][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 479.799259][ T72] netdev_get_by_index+0x5e/0x80 [ 479.799259][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.799259][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.799259][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.799259][ T72] ipv6_add_addr+0x411/0x2000 [ 479.799259][ T72] inet6_addr_add+0x30e/0xa40 [ 479.799259][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.799259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.799259][ T72] netlink_rcv_skb+0x130/0x360 [ 479.799259][ T72] netlink_unicast+0x449/0x710 [ 479.799259][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.799259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.799259][ T72] ___sys_sendmsg+0xee/0x170 [ 479.799259][ T72] __sys_sendmsg+0xcd/0x170 [ 479.799259][ T72] do_syscall_64+0xc6/0x1e0 [ 479.799259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.799259][ T72] [ 479.801269][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 479.801269][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.801269][ T72] ipv6_find_idev+0x102/0x170 [ 479.801269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.801269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.801269][ T72] netlink_rcv_skb+0x130/0x360 [ 479.801269][ T72] netlink_unicast+0x449/0x710 [ 479.801269][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.801269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.801269][ T72] ___sys_sendmsg+0xee/0x170 [ 479.801269][ T72] __sys_sendmsg+0xcd/0x170 [ 479.801269][ T72] do_syscall_64+0xc6/0x1e0 [ 479.801269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.801269][ T72] [ 479.802816][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 479.802816][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.802816][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.802816][ T72] ipv6_find_idev+0x102/0x170 [ 479.802816][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.802816][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.802816][ T72] netlink_rcv_skb+0x130/0x360 [ 479.802816][ T72] netlink_unicast+0x449/0x710 [ 479.802816][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.802816][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.802816][ T72] ___sys_sendmsg+0xee/0x170 [ 479.802816][ T72] __sys_sendmsg+0xcd/0x170 [ 479.802816][ T72] do_syscall_64+0xc6/0x1e0 [ 479.802816][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.802816][ T72] [ 479.804654][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 479.804972][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 479.804972][ T72] netdev_get_by_index+0x5e/0x80 [ 479.804972][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.804972][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.804972][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.804972][ T72] ipv6_add_addr+0x411/0x2000 [ 479.804972][ T72] inet6_addr_add+0x30e/0xa40 [ 479.804972][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.804972][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.804972][ T72] netlink_rcv_skb+0x130/0x360 [ 479.804972][ T72] netlink_unicast+0x449/0x710 [ 479.804972][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.804972][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.804972][ T72] ___sys_sendmsg+0xee/0x170 [ 479.804972][ T72] __sys_sendmsg+0xcd/0x170 [ 479.804972][ T72] do_syscall_64+0xc6/0x1e0 [ 479.804972][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.804972][ T72] [ 479.806971][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 479.806971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.806971][ T72] ipv6_find_idev+0x102/0x170 [ 479.806971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.806971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.806971][ T72] netlink_rcv_skb+0x130/0x360 [ 479.806971][ T72] netlink_unicast+0x449/0x710 [ 479.806971][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.806971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.806971][ T72] ___sys_sendmsg+0xee/0x170 [ 479.806971][ T72] __sys_sendmsg+0xcd/0x170 [ 479.806971][ T72] do_syscall_64+0xc6/0x1e0 [ 479.806971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.806971][ T72] [ 479.808508][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 479.808508][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.808508][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.808508][ T72] ipv6_find_idev+0x102/0x170 [ 479.808508][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.808508][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.808508][ T72] netlink_rcv_skb+0x130/0x360 [ 479.808508][ T72] netlink_unicast+0x449/0x710 [ 479.808508][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.808508][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.808508][ T72] ___sys_sendmsg+0xee/0x170 [ 479.808508][ T72] __sys_sendmsg+0xcd/0x170 [ 479.808508][ T72] do_syscall_64+0xc6/0x1e0 [ 479.808508][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.808508][ T72] [ 479.810209][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 479.810495][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 479.810495][ T72] netdev_get_by_index+0x5e/0x80 [ 479.810495][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.810495][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.810495][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.810495][ T72] ipv6_add_addr+0x411/0x2000 [ 479.810495][ T72] inet6_addr_add+0x30e/0xa40 [ 479.810495][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.810495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.810495][ T72] netlink_rcv_skb+0x130/0x360 [ 479.810495][ T72] netlink_unicast+0x449/0x710 [ 479.810495][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.810495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.810495][ T72] ___sys_sendmsg+0xee/0x170 [ 479.810495][ T72] __sys_sendmsg+0xcd/0x170 [ 479.810495][ T72] do_syscall_64+0xc6/0x1e0 [ 479.810495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.810495][ T72] [ 479.812483][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 479.812483][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.812483][ T72] ipv6_find_idev+0x102/0x170 [ 479.812483][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.812483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.812483][ T72] netlink_rcv_skb+0x130/0x360 [ 479.812483][ T72] netlink_unicast+0x449/0x710 [ 479.812483][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.812483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.812483][ T72] ___sys_sendmsg+0xee/0x170 [ 479.812483][ T72] __sys_sendmsg+0xcd/0x170 [ 479.812483][ T72] do_syscall_64+0xc6/0x1e0 [ 479.812483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.812483][ T72] [ 479.814406][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 479.814406][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.814406][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.814406][ T72] ipv6_find_idev+0x102/0x170 [ 479.814406][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.814406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.814406][ T72] netlink_rcv_skb+0x130/0x360 [ 479.814406][ T72] netlink_unicast+0x449/0x710 [ 479.814406][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.814406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.814406][ T72] ___sys_sendmsg+0xee/0x170 [ 479.814406][ T72] __sys_sendmsg+0xcd/0x170 [ 479.814406][ T72] do_syscall_64+0xc6/0x1e0 [ 479.814406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.814406][ T72] [ 479.816089][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 479.816389][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 479.816389][ T72] netdev_get_by_index+0x5e/0x80 [ 479.816389][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.816389][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.816389][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.816389][ T72] ipv6_add_addr+0x411/0x2000 [ 479.816389][ T72] inet6_addr_add+0x30e/0xa40 [ 479.816389][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.816389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.816389][ T72] netlink_rcv_skb+0x130/0x360 [ 479.816389][ T72] netlink_unicast+0x449/0x710 [ 479.816389][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.816389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.816389][ T72] ___sys_sendmsg+0xee/0x170 [ 479.816389][ T72] __sys_sendmsg+0xcd/0x170 [ 479.816389][ T72] do_syscall_64+0xc6/0x1e0 [ 479.816389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.816389][ T72] [ 479.818381][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 479.818381][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.818381][ T72] ipv6_find_idev+0x102/0x170 [ 479.818381][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.818381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.818381][ T72] netlink_rcv_skb+0x130/0x360 [ 479.818381][ T72] netlink_unicast+0x449/0x710 [ 479.818381][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.818381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.818381][ T72] ___sys_sendmsg+0xee/0x170 [ 479.818381][ T72] __sys_sendmsg+0xcd/0x170 [ 479.818381][ T72] do_syscall_64+0xc6/0x1e0 [ 479.818381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.818381][ T72] [ 479.819951][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 479.819951][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.819951][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.819951][ T72] ipv6_find_idev+0x102/0x170 [ 479.819951][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.819951][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.819951][ T72] netlink_rcv_skb+0x130/0x360 [ 479.819951][ T72] netlink_unicast+0x449/0x710 [ 479.819951][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.819951][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.819951][ T72] ___sys_sendmsg+0xee/0x170 [ 479.819951][ T72] __sys_sendmsg+0xcd/0x170 [ 479.819951][ T72] do_syscall_64+0xc6/0x1e0 [ 479.819951][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.819951][ T72] [ 479.822082][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 479.822680][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 479.822680][ T72] netdev_get_by_index+0x5e/0x80 [ 479.822680][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.822680][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.822680][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.822680][ T72] ipv6_add_addr+0x411/0x2000 [ 479.822680][ T72] inet6_addr_add+0x30e/0xa40 [ 479.822680][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.822680][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.822680][ T72] netlink_rcv_skb+0x130/0x360 [ 479.822680][ T72] netlink_unicast+0x449/0x710 [ 479.822680][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.822680][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.822680][ T72] ___sys_sendmsg+0xee/0x170 [ 479.822680][ T72] __sys_sendmsg+0xcd/0x170 [ 479.822680][ T72] do_syscall_64+0xc6/0x1e0 [ 479.822680][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.822680][ T72] [ 479.824697][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 479.824697][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.824697][ T72] ipv6_find_idev+0x102/0x170 [ 479.824697][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.824697][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.824697][ T72] netlink_rcv_skb+0x130/0x360 [ 479.824697][ T72] netlink_unicast+0x449/0x710 [ 479.824697][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.824697][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.824697][ T72] ___sys_sendmsg+0xee/0x170 [ 479.824697][ T72] __sys_sendmsg+0xcd/0x170 [ 479.824697][ T72] do_syscall_64+0xc6/0x1e0 [ 479.824697][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.824697][ T72] [ 479.826236][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 479.826236][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.826236][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.826236][ T72] ipv6_find_idev+0x102/0x170 [ 479.826236][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.826236][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.826236][ T72] netlink_rcv_skb+0x130/0x360 [ 479.826236][ T72] netlink_unicast+0x449/0x710 [ 479.826236][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.826236][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.826236][ T72] ___sys_sendmsg+0xee/0x170 [ 479.826236][ T72] __sys_sendmsg+0xcd/0x170 [ 479.826236][ T72] do_syscall_64+0xc6/0x1e0 [ 479.826236][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.826236][ T72] [ 479.827921][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 479.828220][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 479.828220][ T72] netdev_get_by_index+0x5e/0x80 [ 479.828220][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.828220][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.828220][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.828220][ T72] ipv6_add_addr+0x411/0x2000 [ 479.828220][ T72] inet6_addr_add+0x30e/0xa40 [ 479.828220][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.828220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.828220][ T72] netlink_rcv_skb+0x130/0x360 [ 479.828220][ T72] netlink_unicast+0x449/0x710 [ 479.828220][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.828220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.828220][ T72] ___sys_sendmsg+0xee/0x170 [ 479.828220][ T72] __sys_sendmsg+0xcd/0x170 [ 479.828220][ T72] do_syscall_64+0xc6/0x1e0 [ 479.828220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.828220][ T72] [ 479.830246][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 479.830246][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.830246][ T72] ipv6_find_idev+0x102/0x170 [ 479.830246][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.830246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.830246][ T72] netlink_rcv_skb+0x130/0x360 [ 479.830246][ T72] netlink_unicast+0x449/0x710 [ 479.830246][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.830246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.830246][ T72] ___sys_sendmsg+0xee/0x170 [ 479.830246][ T72] __sys_sendmsg+0xcd/0x170 [ 479.830246][ T72] do_syscall_64+0xc6/0x1e0 [ 479.830246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.830246][ T72] [ 479.831854][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 479.831854][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.831854][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.831854][ T72] ipv6_find_idev+0x102/0x170 [ 479.831854][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.831854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.831854][ T72] netlink_rcv_skb+0x130/0x360 [ 479.831854][ T72] netlink_unicast+0x449/0x710 [ 479.831854][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.831854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.831854][ T72] ___sys_sendmsg+0xee/0x170 [ 479.831854][ T72] __sys_sendmsg+0xcd/0x170 [ 479.831854][ T72] do_syscall_64+0xc6/0x1e0 [ 479.831854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.831854][ T72] [ 479.833846][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 479.834160][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 479.834160][ T72] netdev_get_by_index+0x5e/0x80 [ 479.834160][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.834160][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.834160][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.834160][ T72] ipv6_add_addr+0x411/0x2000 [ 479.834160][ T72] inet6_addr_add+0x30e/0xa40 [ 479.834160][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.834160][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.834160][ T72] netlink_rcv_skb+0x130/0x360 [ 479.834160][ T72] netlink_unicast+0x449/0x710 [ 479.834160][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.834160][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.834160][ T72] ___sys_sendmsg+0xee/0x170 [ 479.834160][ T72] __sys_sendmsg+0xcd/0x170 [ 479.834160][ T72] do_syscall_64+0xc6/0x1e0 [ 479.834160][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.834160][ T72] [ 479.836343][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 479.836343][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.836343][ T72] ipv6_find_idev+0x102/0x170 [ 479.836343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.836343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.836343][ T72] netlink_rcv_skb+0x130/0x360 [ 479.836343][ T72] netlink_unicast+0x449/0x710 [ 479.836343][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.836343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.836343][ T72] ___sys_sendmsg+0xee/0x170 [ 479.836343][ T72] __sys_sendmsg+0xcd/0x170 [ 479.836343][ T72] do_syscall_64+0xc6/0x1e0 [ 479.836343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.836343][ T72] [ 479.838057][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 479.838057][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.838057][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.838057][ T72] ipv6_find_idev+0x102/0x170 [ 479.838057][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.838057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.838057][ T72] netlink_rcv_skb+0x130/0x360 [ 479.838057][ T72] netlink_unicast+0x449/0x710 [ 479.838057][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.838057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.838057][ T72] ___sys_sendmsg+0xee/0x170 [ 479.838057][ T72] __sys_sendmsg+0xcd/0x170 [ 479.838057][ T72] do_syscall_64+0xc6/0x1e0 [ 479.838057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.838057][ T72] [ 479.840116][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 479.840431][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 479.840431][ T72] netdev_get_by_index+0x5e/0x80 [ 479.840431][ T72] fib6_nh_init+0x3d8/0x15b0 [ 479.840431][ T72] ip6_route_info_create+0xf18/0x17d0 [ 479.840431][ T72] addrconf_f6i_alloc+0x244/0x410 [ 479.840431][ T72] ipv6_add_addr+0x411/0x2000 [ 479.840431][ T72] inet6_addr_add+0x30e/0xa40 [ 479.840431][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 479.840431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.840431][ T72] netlink_rcv_skb+0x130/0x360 [ 479.840431][ T72] netlink_unicast+0x449/0x710 [ 479.840431][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.840431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.840431][ T72] ___sys_sendmsg+0xee/0x170 [ 479.840431][ T72] __sys_sendmsg+0xcd/0x170 [ 479.840431][ T72] do_syscall_64+0xc6/0x1e0 [ 479.840431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.840431][ T72] [ 479.842599][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 479.842599][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 479.842599][ T72] ipv6_find_idev+0x102/0x170 [ 479.842599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.842599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.842599][ T72] netlink_rcv_skb+0x130/0x360 [ 479.842599][ T72] netlink_unicast+0x449/0x710 [ 479.842599][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.842599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.842599][ T72] ___sys_sendmsg+0xee/0x170 [ 479.842599][ T72] __sys_sendmsg+0xcd/0x170 [ 479.842599][ T72] do_syscall_64+0xc6/0x1e0 [ 479.842599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.842599][ T72] [ 479.844267][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 479.844267][ T72] neigh_parms_alloc+0x1e5/0x510 [ 479.844267][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 479.844267][ T72] ipv6_find_idev+0x102/0x170 [ 479.844267][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 479.844267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 479.844267][ T72] netlink_rcv_skb+0x130/0x360 [ 479.844267][ T72] netlink_unicast+0x449/0x710 [ 479.844267][ T72] netlink_sendmsg+0x723/0xbe0 [ 479.844267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 479.844267][ T72] ___sys_sendmsg+0xee/0x170 [ 479.844267][ T72] __sys_sendmsg+0xcd/0x170 [ 479.844267][ T72] do_syscall_64+0xc6/0x1e0 [ 479.844267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 479.844267][ T72] [ 490.086853][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 490.087270][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 490.087270][ T72] netdev_get_by_index+0x5e/0x80 [ 490.087270][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.087270][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.087270][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.087270][ T72] ipv6_add_addr+0x411/0x2000 [ 490.087270][ T72] inet6_addr_add+0x30e/0xa40 [ 490.087270][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.087270][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.087270][ T72] netlink_rcv_skb+0x130/0x360 [ 490.087270][ T72] netlink_unicast+0x449/0x710 [ 490.087270][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.087270][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.087270][ T72] ___sys_sendmsg+0xee/0x170 [ 490.087270][ T72] __sys_sendmsg+0xcd/0x170 [ 490.087270][ T72] do_syscall_64+0xc6/0x1e0 [ 490.087270][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.087270][ T72] [ 490.089446][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 490.089446][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.089446][ T72] ipv6_find_idev+0x102/0x170 [ 490.089446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.089446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.089446][ T72] netlink_rcv_skb+0x130/0x360 [ 490.089446][ T72] netlink_unicast+0x449/0x710 [ 490.089446][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.089446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.089446][ T72] ___sys_sendmsg+0xee/0x170 [ 490.089446][ T72] __sys_sendmsg+0xcd/0x170 [ 490.089446][ T72] do_syscall_64+0xc6/0x1e0 [ 490.089446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.089446][ T72] [ 490.091081][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 490.091081][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.091081][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.091081][ T72] ipv6_find_idev+0x102/0x170 [ 490.091081][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.091081][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.091081][ T72] netlink_rcv_skb+0x130/0x360 [ 490.091081][ T72] netlink_unicast+0x449/0x710 [ 490.091081][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.091081][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.091081][ T72] ___sys_sendmsg+0xee/0x170 [ 490.091081][ T72] __sys_sendmsg+0xcd/0x170 [ 490.091081][ T72] do_syscall_64+0xc6/0x1e0 [ 490.091081][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.091081][ T72] [ 490.092914][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 490.093251][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 490.093251][ T72] netdev_get_by_index+0x5e/0x80 [ 490.093251][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.093251][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.093251][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.093251][ T72] ipv6_add_addr+0x411/0x2000 [ 490.093251][ T72] inet6_addr_add+0x30e/0xa40 [ 490.093251][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.093251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.093251][ T72] netlink_rcv_skb+0x130/0x360 [ 490.093251][ T72] netlink_unicast+0x449/0x710 [ 490.093251][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.093251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.093251][ T72] ___sys_sendmsg+0xee/0x170 [ 490.093251][ T72] __sys_sendmsg+0xcd/0x170 [ 490.093251][ T72] do_syscall_64+0xc6/0x1e0 [ 490.093251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.093251][ T72] [ 490.095266][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 490.095266][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.095266][ T72] ipv6_find_idev+0x102/0x170 [ 490.095266][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.095266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.095266][ T72] netlink_rcv_skb+0x130/0x360 [ 490.095266][ T72] netlink_unicast+0x449/0x710 [ 490.095266][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.095266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.095266][ T72] ___sys_sendmsg+0xee/0x170 [ 490.095266][ T72] __sys_sendmsg+0xcd/0x170 [ 490.095266][ T72] do_syscall_64+0xc6/0x1e0 [ 490.095266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.095266][ T72] [ 490.096803][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 490.096803][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.096803][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.096803][ T72] ipv6_find_idev+0x102/0x170 [ 490.096803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.096803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.096803][ T72] netlink_rcv_skb+0x130/0x360 [ 490.096803][ T72] netlink_unicast+0x449/0x710 [ 490.096803][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.096803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.096803][ T72] ___sys_sendmsg+0xee/0x170 [ 490.096803][ T72] __sys_sendmsg+0xcd/0x170 [ 490.096803][ T72] do_syscall_64+0xc6/0x1e0 [ 490.096803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.096803][ T72] [ 490.098552][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 490.098913][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 490.098913][ T72] netdev_get_by_index+0x5e/0x80 [ 490.098913][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.098913][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.098913][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.098913][ T72] ipv6_add_addr+0x411/0x2000 [ 490.098913][ T72] inet6_addr_add+0x30e/0xa40 [ 490.098913][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.098913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.098913][ T72] netlink_rcv_skb+0x130/0x360 [ 490.098913][ T72] netlink_unicast+0x449/0x710 [ 490.098913][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.098913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.098913][ T72] ___sys_sendmsg+0xee/0x170 [ 490.098913][ T72] __sys_sendmsg+0xcd/0x170 [ 490.098913][ T72] do_syscall_64+0xc6/0x1e0 [ 490.098913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.098913][ T72] [ 490.100909][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 490.100909][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.100909][ T72] ipv6_find_idev+0x102/0x170 [ 490.100909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.100909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.100909][ T72] netlink_rcv_skb+0x130/0x360 [ 490.100909][ T72] netlink_unicast+0x449/0x710 [ 490.100909][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.100909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.100909][ T72] ___sys_sendmsg+0xee/0x170 [ 490.100909][ T72] __sys_sendmsg+0xcd/0x170 [ 490.100909][ T72] do_syscall_64+0xc6/0x1e0 [ 490.100909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.100909][ T72] [ 490.102446][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 490.102446][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.102446][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.102446][ T72] ipv6_find_idev+0x102/0x170 [ 490.102446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.102446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.102446][ T72] netlink_rcv_skb+0x130/0x360 [ 490.102446][ T72] netlink_unicast+0x449/0x710 [ 490.102446][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.102446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.102446][ T72] ___sys_sendmsg+0xee/0x170 [ 490.102446][ T72] __sys_sendmsg+0xcd/0x170 [ 490.102446][ T72] do_syscall_64+0xc6/0x1e0 [ 490.102446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.102446][ T72] [ 490.104134][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 490.104428][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 490.104428][ T72] netdev_get_by_index+0x5e/0x80 [ 490.104428][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.104428][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.104428][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.104428][ T72] ipv6_add_addr+0x411/0x2000 [ 490.104428][ T72] inet6_addr_add+0x30e/0xa40 [ 490.104428][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.104428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.104428][ T72] netlink_rcv_skb+0x130/0x360 [ 490.104428][ T72] netlink_unicast+0x449/0x710 [ 490.104428][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.104428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.104428][ T72] ___sys_sendmsg+0xee/0x170 [ 490.104428][ T72] __sys_sendmsg+0xcd/0x170 [ 490.104428][ T72] do_syscall_64+0xc6/0x1e0 [ 490.104428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.104428][ T72] [ 490.106433][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 490.106433][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.106433][ T72] ipv6_find_idev+0x102/0x170 [ 490.106433][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.106433][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.106433][ T72] netlink_rcv_skb+0x130/0x360 [ 490.106433][ T72] netlink_unicast+0x449/0x710 [ 490.106433][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.106433][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.106433][ T72] ___sys_sendmsg+0xee/0x170 [ 490.106433][ T72] __sys_sendmsg+0xcd/0x170 [ 490.106433][ T72] do_syscall_64+0xc6/0x1e0 [ 490.106433][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.106433][ T72] [ 490.108006][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 490.108006][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.108006][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.108006][ T72] ipv6_find_idev+0x102/0x170 [ 490.108006][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.108006][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.108006][ T72] netlink_rcv_skb+0x130/0x360 [ 490.108006][ T72] netlink_unicast+0x449/0x710 [ 490.108006][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.108006][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.108006][ T72] ___sys_sendmsg+0xee/0x170 [ 490.108006][ T72] __sys_sendmsg+0xcd/0x170 [ 490.108006][ T72] do_syscall_64+0xc6/0x1e0 [ 490.108006][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.108006][ T72] [ 490.109895][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 490.110250][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 490.110250][ T72] netdev_get_by_index+0x5e/0x80 [ 490.110250][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.110250][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.110250][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.110250][ T72] ipv6_add_addr+0x411/0x2000 [ 490.110250][ T72] inet6_addr_add+0x30e/0xa40 [ 490.110250][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.110250][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.110250][ T72] netlink_rcv_skb+0x130/0x360 [ 490.110250][ T72] netlink_unicast+0x449/0x710 [ 490.110250][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.110250][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.110250][ T72] ___sys_sendmsg+0xee/0x170 [ 490.110250][ T72] __sys_sendmsg+0xcd/0x170 [ 490.110250][ T72] do_syscall_64+0xc6/0x1e0 [ 490.110250][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.110250][ T72] [ 490.112267][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 490.112267][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.112267][ T72] ipv6_find_idev+0x102/0x170 [ 490.112267][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.112267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.112267][ T72] netlink_rcv_skb+0x130/0x360 [ 490.112267][ T72] netlink_unicast+0x449/0x710 [ 490.112267][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.112267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.112267][ T72] ___sys_sendmsg+0xee/0x170 [ 490.112267][ T72] __sys_sendmsg+0xcd/0x170 [ 490.112267][ T72] do_syscall_64+0xc6/0x1e0 [ 490.112267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.112267][ T72] [ 490.113801][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 490.113801][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.113801][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.113801][ T72] ipv6_find_idev+0x102/0x170 [ 490.113801][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.113801][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.113801][ T72] netlink_rcv_skb+0x130/0x360 [ 490.113801][ T72] netlink_unicast+0x449/0x710 [ 490.113801][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.113801][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.113801][ T72] ___sys_sendmsg+0xee/0x170 [ 490.113801][ T72] __sys_sendmsg+0xcd/0x170 [ 490.113801][ T72] do_syscall_64+0xc6/0x1e0 [ 490.113801][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.113801][ T72] [ 490.115772][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 490.116095][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 490.116095][ T72] netdev_get_by_index+0x5e/0x80 [ 490.116095][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.116095][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.116095][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.116095][ T72] ipv6_add_addr+0x411/0x2000 [ 490.116095][ T72] inet6_addr_add+0x30e/0xa40 [ 490.116095][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.116095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.116095][ T72] netlink_rcv_skb+0x130/0x360 [ 490.116095][ T72] netlink_unicast+0x449/0x710 [ 490.116095][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.116095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.116095][ T72] ___sys_sendmsg+0xee/0x170 [ 490.116095][ T72] __sys_sendmsg+0xcd/0x170 [ 490.116095][ T72] do_syscall_64+0xc6/0x1e0 [ 490.116095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.116095][ T72] [ 490.118277][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 490.118277][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.118277][ T72] ipv6_find_idev+0x102/0x170 [ 490.118277][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.118277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.118277][ T72] netlink_rcv_skb+0x130/0x360 [ 490.118277][ T72] netlink_unicast+0x449/0x710 [ 490.118277][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.118277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.118277][ T72] ___sys_sendmsg+0xee/0x170 [ 490.118277][ T72] __sys_sendmsg+0xcd/0x170 [ 490.118277][ T72] do_syscall_64+0xc6/0x1e0 [ 490.118277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.118277][ T72] [ 490.120060][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 490.120060][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.120060][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.120060][ T72] ipv6_find_idev+0x102/0x170 [ 490.120060][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.120060][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.120060][ T72] netlink_rcv_skb+0x130/0x360 [ 490.120060][ T72] netlink_unicast+0x449/0x710 [ 490.120060][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.120060][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.120060][ T72] ___sys_sendmsg+0xee/0x170 [ 490.120060][ T72] __sys_sendmsg+0xcd/0x170 [ 490.120060][ T72] do_syscall_64+0xc6/0x1e0 [ 490.120060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.120060][ T72] [ 490.122001][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 490.122317][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 490.122317][ T72] netdev_get_by_index+0x5e/0x80 [ 490.122317][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.122317][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.122317][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.122317][ T72] ipv6_add_addr+0x411/0x2000 [ 490.122317][ T72] inet6_addr_add+0x30e/0xa40 [ 490.122317][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.122317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.122317][ T72] netlink_rcv_skb+0x130/0x360 [ 490.122317][ T72] netlink_unicast+0x449/0x710 [ 490.122317][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.122317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.122317][ T72] ___sys_sendmsg+0xee/0x170 [ 490.122317][ T72] __sys_sendmsg+0xcd/0x170 [ 490.122317][ T72] do_syscall_64+0xc6/0x1e0 [ 490.122317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.122317][ T72] [ 490.124493][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 490.124493][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.124493][ T72] ipv6_find_idev+0x102/0x170 [ 490.124493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.124493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.124493][ T72] netlink_rcv_skb+0x130/0x360 [ 490.124493][ T72] netlink_unicast+0x449/0x710 [ 490.124493][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.124493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.124493][ T72] ___sys_sendmsg+0xee/0x170 [ 490.124493][ T72] __sys_sendmsg+0xcd/0x170 [ 490.124493][ T72] do_syscall_64+0xc6/0x1e0 [ 490.124493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.124493][ T72] [ 490.126217][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 490.126217][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.126217][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.126217][ T72] ipv6_find_idev+0x102/0x170 [ 490.126217][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.126217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.126217][ T72] netlink_rcv_skb+0x130/0x360 [ 490.126217][ T72] netlink_unicast+0x449/0x710 [ 490.126217][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.126217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.126217][ T72] ___sys_sendmsg+0xee/0x170 [ 490.126217][ T72] __sys_sendmsg+0xcd/0x170 [ 490.126217][ T72] do_syscall_64+0xc6/0x1e0 [ 490.126217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.126217][ T72] [ 490.128206][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 490.128517][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 490.128517][ T72] netdev_get_by_index+0x5e/0x80 [ 490.128517][ T72] fib6_nh_init+0x3d8/0x15b0 [ 490.128517][ T72] ip6_route_info_create+0xf18/0x17d0 [ 490.128517][ T72] addrconf_f6i_alloc+0x244/0x410 [ 490.128517][ T72] ipv6_add_addr+0x411/0x2000 [ 490.128517][ T72] inet6_addr_add+0x30e/0xa40 [ 490.128517][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 490.128517][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.128517][ T72] netlink_rcv_skb+0x130/0x360 [ 490.128517][ T72] netlink_unicast+0x449/0x710 [ 490.128517][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.128517][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.128517][ T72] ___sys_sendmsg+0xee/0x170 [ 490.128517][ T72] __sys_sendmsg+0xcd/0x170 [ 490.128517][ T72] do_syscall_64+0xc6/0x1e0 [ 490.128517][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.128517][ T72] [ 490.130763][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 490.130763][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 490.130763][ T72] ipv6_find_idev+0x102/0x170 [ 490.130763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.130763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.130763][ T72] netlink_rcv_skb+0x130/0x360 [ 490.130763][ T72] netlink_unicast+0x449/0x710 [ 490.130763][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.130763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.130763][ T72] ___sys_sendmsg+0xee/0x170 [ 490.130763][ T72] __sys_sendmsg+0xcd/0x170 [ 490.130763][ T72] do_syscall_64+0xc6/0x1e0 [ 490.130763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.130763][ T72] [ 490.132497][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 490.132497][ T72] neigh_parms_alloc+0x1e5/0x510 [ 490.132497][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 490.132497][ T72] ipv6_find_idev+0x102/0x170 [ 490.132497][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 490.132497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 490.132497][ T72] netlink_rcv_skb+0x130/0x360 [ 490.132497][ T72] netlink_unicast+0x449/0x710 [ 490.132497][ T72] netlink_sendmsg+0x723/0xbe0 [ 490.132497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 490.132497][ T72] ___sys_sendmsg+0xee/0x170 [ 490.132497][ T72] __sys_sendmsg+0xcd/0x170 [ 490.132497][ T72] do_syscall_64+0xc6/0x1e0 [ 490.132497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 490.132497][ T72] [ 492.838889][ T42] INFO: task modprobe:1060 blocked for more than 245 seconds. [ 492.839184][ T42] Not tainted 6.8.0-virtme #1 [ 492.839307][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 492.839516][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 492.839809][ T42] Call Trace: [ 492.839935][ T42] [ 492.840009][ T42] __schedule+0x705/0x1ac0 [ 492.840146][ T42] ? __pfx___schedule+0x10/0x10 [ 492.840279][ T42] ? schedule+0x1a5/0x210 [ 492.840378][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 492.840509][ T42] ? mark_lock+0x38/0x3e0 [ 492.840605][ T42] ? do_raw_spin_lock+0x131/0x270 [ 492.840752][ T42] ? schedule+0x1a5/0x210 [ 492.840853][ T42] schedule+0xdf/0x210 [ 492.840954][ T42] schedule_preempt_disabled+0x15/0x30 [ 492.841081][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 492.841215][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 492.841370][ T42] ? kasan_save_stack+0x34/0x50 [ 492.841496][ T42] ? kasan_save_stack+0x24/0x50 [ 492.841623][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 492.841764][ T42] ? lock_acquire+0x1c1/0x220 [ 492.841890][ T42] ? register_pernet_subsys+0x1a/0x50 [ 492.842028][ T42] down_write+0x1c9/0x200 [ 492.842126][ T42] ? __pfx_down_write+0x10/0x10 [ 492.842252][ T42] ? __pfx___lock_release+0x10/0x10 [ 492.842383][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 492.842569][ T42] register_pernet_subsys+0x1a/0x50 [ 492.842696][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 492.842893][ T42] do_one_initcall+0xc8/0x3f0 [ 492.843023][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 492.843153][ T42] ? __create_object+0x5e/0xb0 [ 492.843283][ T42] ? kasan_unpoison+0x27/0x60 [ 492.843416][ T42] do_init_module+0x233/0x740 [ 492.843551][ T42] load_module+0x16b5/0x2350 [ 492.843692][ T42] ? __pfx_load_module+0x10/0x10 [ 492.843844][ T42] ? kernel_read_file+0x3d2/0x520 [ 492.843980][ T42] ? kernel_read_file+0x300/0x520 [ 492.844111][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 492.844248][ T42] ? init_module_from_file+0xd2/0x130 [ 492.844384][ T42] init_module_from_file+0xd2/0x130 [ 492.844530][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 492.844689][ T42] ? __lock_release+0x103/0x460 [ 492.844828][ T42] ? idempotent_init_module+0x32a/0x620 [ 492.844965][ T42] ? idempotent_init_module+0x32a/0x620 [ 492.845094][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 492.845226][ T42] idempotent_init_module+0x342/0x620 [ 492.845358][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 492.845533][ T42] __x64_sys_finit_module+0xbe/0x130 [ 492.845664][ T42] do_syscall_64+0xc6/0x1e0 [ 492.845804][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 492.845964][ T42] RIP: 0033:0x7f69f7397e5d [ 492.846094][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 492.846289][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 492.846474][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 492.846672][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 492.846868][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 492.847057][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 492.847255][ T42] [ 492.847356][ T42] [ 492.847356][ T42] Showing all locks held in the system: [ 492.847533][ T42] 1 lock held by khungtaskd/42: [ 492.847655][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 492.847908][ T42] 2 locks held by kworker/u20:1/60: [ 492.848045][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 492.848299][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 492.848584][ T42] 3 locks held by kworker/u16:1/72: [ 492.848719][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 492.848994][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 492.849218][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 492.849448][ T42] 1 lock held by modprobe/1060: [ 492.849571][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 492.849843][ T42] [ 492.849907][ T42] ============================================= [ 492.849907][ T42] [ 500.374819][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 500.375235][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 500.375235][ T72] netdev_get_by_index+0x5e/0x80 [ 500.375235][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.375235][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.375235][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.375235][ T72] ipv6_add_addr+0x411/0x2000 [ 500.375235][ T72] inet6_addr_add+0x30e/0xa40 [ 500.375235][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.375235][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.375235][ T72] netlink_rcv_skb+0x130/0x360 [ 500.375235][ T72] netlink_unicast+0x449/0x710 [ 500.375235][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.375235][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.375235][ T72] ___sys_sendmsg+0xee/0x170 [ 500.375235][ T72] __sys_sendmsg+0xcd/0x170 [ 500.375235][ T72] do_syscall_64+0xc6/0x1e0 [ 500.375235][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.375235][ T72] [ 500.377274][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 500.377274][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.377274][ T72] ipv6_find_idev+0x102/0x170 [ 500.377274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.377274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.377274][ T72] netlink_rcv_skb+0x130/0x360 [ 500.377274][ T72] netlink_unicast+0x449/0x710 [ 500.377274][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.377274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.377274][ T72] ___sys_sendmsg+0xee/0x170 [ 500.377274][ T72] __sys_sendmsg+0xcd/0x170 [ 500.377274][ T72] do_syscall_64+0xc6/0x1e0 [ 500.377274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.377274][ T72] [ 500.378939][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 500.378939][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.378939][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.378939][ T72] ipv6_find_idev+0x102/0x170 [ 500.378939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.378939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.378939][ T72] netlink_rcv_skb+0x130/0x360 [ 500.378939][ T72] netlink_unicast+0x449/0x710 [ 500.378939][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.378939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.378939][ T72] ___sys_sendmsg+0xee/0x170 [ 500.378939][ T72] __sys_sendmsg+0xcd/0x170 [ 500.378939][ T72] do_syscall_64+0xc6/0x1e0 [ 500.378939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.378939][ T72] [ 500.380641][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 500.380927][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 500.380927][ T72] netdev_get_by_index+0x5e/0x80 [ 500.380927][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.380927][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.380927][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.380927][ T72] ipv6_add_addr+0x411/0x2000 [ 500.380927][ T72] inet6_addr_add+0x30e/0xa40 [ 500.380927][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.380927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.380927][ T72] netlink_rcv_skb+0x130/0x360 [ 500.380927][ T72] netlink_unicast+0x449/0x710 [ 500.380927][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.380927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.380927][ T72] ___sys_sendmsg+0xee/0x170 [ 500.380927][ T72] __sys_sendmsg+0xcd/0x170 [ 500.380927][ T72] do_syscall_64+0xc6/0x1e0 [ 500.380927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.380927][ T72] [ 500.382917][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 500.382917][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.382917][ T72] ipv6_find_idev+0x102/0x170 [ 500.382917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.382917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.382917][ T72] netlink_rcv_skb+0x130/0x360 [ 500.382917][ T72] netlink_unicast+0x449/0x710 [ 500.382917][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.382917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.382917][ T72] ___sys_sendmsg+0xee/0x170 [ 500.382917][ T72] __sys_sendmsg+0xcd/0x170 [ 500.382917][ T72] do_syscall_64+0xc6/0x1e0 [ 500.382917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.382917][ T72] [ 500.384461][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 500.384461][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.384461][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.384461][ T72] ipv6_find_idev+0x102/0x170 [ 500.384461][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.384461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.384461][ T72] netlink_rcv_skb+0x130/0x360 [ 500.384461][ T72] netlink_unicast+0x449/0x710 [ 500.384461][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.384461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.384461][ T72] ___sys_sendmsg+0xee/0x170 [ 500.384461][ T72] __sys_sendmsg+0xcd/0x170 [ 500.384461][ T72] do_syscall_64+0xc6/0x1e0 [ 500.384461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.384461][ T72] [ 500.386154][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 500.386416][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 500.386416][ T72] netdev_get_by_index+0x5e/0x80 [ 500.386416][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.386416][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.386416][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.386416][ T72] ipv6_add_addr+0x411/0x2000 [ 500.386416][ T72] inet6_addr_add+0x30e/0xa40 [ 500.386416][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.386416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.386416][ T72] netlink_rcv_skb+0x130/0x360 [ 500.386416][ T72] netlink_unicast+0x449/0x710 [ 500.386416][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.386416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.386416][ T72] ___sys_sendmsg+0xee/0x170 [ 500.386416][ T72] __sys_sendmsg+0xcd/0x170 [ 500.386416][ T72] do_syscall_64+0xc6/0x1e0 [ 500.386416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.386416][ T72] [ 500.388403][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 500.388403][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.388403][ T72] ipv6_find_idev+0x102/0x170 [ 500.388403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.388403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.388403][ T72] netlink_rcv_skb+0x130/0x360 [ 500.388403][ T72] netlink_unicast+0x449/0x710 [ 500.388403][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.388403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.388403][ T72] ___sys_sendmsg+0xee/0x170 [ 500.388403][ T72] __sys_sendmsg+0xcd/0x170 [ 500.388403][ T72] do_syscall_64+0xc6/0x1e0 [ 500.388403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.388403][ T72] [ 500.389945][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 500.389945][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.389945][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.389945][ T72] ipv6_find_idev+0x102/0x170 [ 500.389945][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.389945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.389945][ T72] netlink_rcv_skb+0x130/0x360 [ 500.389945][ T72] netlink_unicast+0x449/0x710 [ 500.389945][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.389945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.389945][ T72] ___sys_sendmsg+0xee/0x170 [ 500.389945][ T72] __sys_sendmsg+0xcd/0x170 [ 500.389945][ T72] do_syscall_64+0xc6/0x1e0 [ 500.389945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.389945][ T72] [ 500.391632][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 500.392351][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 500.392351][ T72] netdev_get_by_index+0x5e/0x80 [ 500.392351][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.392351][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.392351][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.392351][ T72] ipv6_add_addr+0x411/0x2000 [ 500.392351][ T72] inet6_addr_add+0x30e/0xa40 [ 500.392351][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.392351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.392351][ T72] netlink_rcv_skb+0x130/0x360 [ 500.392351][ T72] netlink_unicast+0x449/0x710 [ 500.392351][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.392351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.392351][ T72] ___sys_sendmsg+0xee/0x170 [ 500.392351][ T72] __sys_sendmsg+0xcd/0x170 [ 500.392351][ T72] do_syscall_64+0xc6/0x1e0 [ 500.392351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.392351][ T72] [ 500.394345][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 500.394345][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.394345][ T72] ipv6_find_idev+0x102/0x170 [ 500.394345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.394345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.394345][ T72] netlink_rcv_skb+0x130/0x360 [ 500.394345][ T72] netlink_unicast+0x449/0x710 [ 500.394345][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.394345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.394345][ T72] ___sys_sendmsg+0xee/0x170 [ 500.394345][ T72] __sys_sendmsg+0xcd/0x170 [ 500.394345][ T72] do_syscall_64+0xc6/0x1e0 [ 500.394345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.394345][ T72] [ 500.395874][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 500.395874][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.395874][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.395874][ T72] ipv6_find_idev+0x102/0x170 [ 500.395874][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.395874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.395874][ T72] netlink_rcv_skb+0x130/0x360 [ 500.395874][ T72] netlink_unicast+0x449/0x710 [ 500.395874][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.395874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.395874][ T72] ___sys_sendmsg+0xee/0x170 [ 500.395874][ T72] __sys_sendmsg+0xcd/0x170 [ 500.395874][ T72] do_syscall_64+0xc6/0x1e0 [ 500.395874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.395874][ T72] [ 500.397611][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 500.397936][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 500.397936][ T72] netdev_get_by_index+0x5e/0x80 [ 500.397936][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.397936][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.397936][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.397936][ T72] ipv6_add_addr+0x411/0x2000 [ 500.397936][ T72] inet6_addr_add+0x30e/0xa40 [ 500.397936][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.397936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.397936][ T72] netlink_rcv_skb+0x130/0x360 [ 500.397936][ T72] netlink_unicast+0x449/0x710 [ 500.397936][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.397936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.397936][ T72] ___sys_sendmsg+0xee/0x170 [ 500.397936][ T72] __sys_sendmsg+0xcd/0x170 [ 500.397936][ T72] do_syscall_64+0xc6/0x1e0 [ 500.397936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.397936][ T72] [ 500.399940][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 500.399940][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.399940][ T72] ipv6_find_idev+0x102/0x170 [ 500.399940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.399940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.399940][ T72] netlink_rcv_skb+0x130/0x360 [ 500.399940][ T72] netlink_unicast+0x449/0x710 [ 500.399940][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.399940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.399940][ T72] ___sys_sendmsg+0xee/0x170 [ 500.399940][ T72] __sys_sendmsg+0xcd/0x170 [ 500.399940][ T72] do_syscall_64+0xc6/0x1e0 [ 500.399940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.399940][ T72] [ 500.401479][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 500.401479][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.401479][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.401479][ T72] ipv6_find_idev+0x102/0x170 [ 500.401479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.401479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.401479][ T72] netlink_rcv_skb+0x130/0x360 [ 500.401479][ T72] netlink_unicast+0x449/0x710 [ 500.401479][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.401479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.401479][ T72] ___sys_sendmsg+0xee/0x170 [ 500.401479][ T72] __sys_sendmsg+0xcd/0x170 [ 500.401479][ T72] do_syscall_64+0xc6/0x1e0 [ 500.401479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.401479][ T72] [ 500.403207][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 500.403516][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 500.403516][ T72] netdev_get_by_index+0x5e/0x80 [ 500.403516][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.403516][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.403516][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.403516][ T72] ipv6_add_addr+0x411/0x2000 [ 500.403516][ T72] inet6_addr_add+0x30e/0xa40 [ 500.403516][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.403516][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.403516][ T72] netlink_rcv_skb+0x130/0x360 [ 500.403516][ T72] netlink_unicast+0x449/0x710 [ 500.403516][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.403516][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.403516][ T72] ___sys_sendmsg+0xee/0x170 [ 500.403516][ T72] __sys_sendmsg+0xcd/0x170 [ 500.403516][ T72] do_syscall_64+0xc6/0x1e0 [ 500.403516][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.403516][ T72] [ 500.405503][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 500.405503][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.405503][ T72] ipv6_find_idev+0x102/0x170 [ 500.405503][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.405503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.405503][ T72] netlink_rcv_skb+0x130/0x360 [ 500.405503][ T72] netlink_unicast+0x449/0x710 [ 500.405503][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.405503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.405503][ T72] ___sys_sendmsg+0xee/0x170 [ 500.405503][ T72] __sys_sendmsg+0xcd/0x170 [ 500.405503][ T72] do_syscall_64+0xc6/0x1e0 [ 500.405503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.405503][ T72] [ 500.407207][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 500.407207][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.407207][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.407207][ T72] ipv6_find_idev+0x102/0x170 [ 500.407207][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.407207][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.407207][ T72] netlink_rcv_skb+0x130/0x360 [ 500.407207][ T72] netlink_unicast+0x449/0x710 [ 500.407207][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.407207][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.407207][ T72] ___sys_sendmsg+0xee/0x170 [ 500.407207][ T72] __sys_sendmsg+0xcd/0x170 [ 500.407207][ T72] do_syscall_64+0xc6/0x1e0 [ 500.407207][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.407207][ T72] [ 500.409145][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 500.409454][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 500.409454][ T72] netdev_get_by_index+0x5e/0x80 [ 500.409454][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.409454][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.409454][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.409454][ T72] ipv6_add_addr+0x411/0x2000 [ 500.409454][ T72] inet6_addr_add+0x30e/0xa40 [ 500.409454][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.409454][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.409454][ T72] netlink_rcv_skb+0x130/0x360 [ 500.409454][ T72] netlink_unicast+0x449/0x710 [ 500.409454][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.409454][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.409454][ T72] ___sys_sendmsg+0xee/0x170 [ 500.409454][ T72] __sys_sendmsg+0xcd/0x170 [ 500.409454][ T72] do_syscall_64+0xc6/0x1e0 [ 500.409454][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.409454][ T72] [ 500.411687][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 500.411687][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.411687][ T72] ipv6_find_idev+0x102/0x170 [ 500.411687][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.411687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.411687][ T72] netlink_rcv_skb+0x130/0x360 [ 500.411687][ T72] netlink_unicast+0x449/0x710 [ 500.411687][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.411687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.411687][ T72] ___sys_sendmsg+0xee/0x170 [ 500.411687][ T72] __sys_sendmsg+0xcd/0x170 [ 500.411687][ T72] do_syscall_64+0xc6/0x1e0 [ 500.411687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.411687][ T72] [ 500.413403][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 500.413403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.413403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.413403][ T72] ipv6_find_idev+0x102/0x170 [ 500.413403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.413403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.413403][ T72] netlink_rcv_skb+0x130/0x360 [ 500.413403][ T72] netlink_unicast+0x449/0x710 [ 500.413403][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.413403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.413403][ T72] ___sys_sendmsg+0xee/0x170 [ 500.413403][ T72] __sys_sendmsg+0xcd/0x170 [ 500.413403][ T72] do_syscall_64+0xc6/0x1e0 [ 500.413403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.413403][ T72] [ 500.415365][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 500.415699][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 500.415699][ T72] netdev_get_by_index+0x5e/0x80 [ 500.415699][ T72] fib6_nh_init+0x3d8/0x15b0 [ 500.415699][ T72] ip6_route_info_create+0xf18/0x17d0 [ 500.415699][ T72] addrconf_f6i_alloc+0x244/0x410 [ 500.415699][ T72] ipv6_add_addr+0x411/0x2000 [ 500.415699][ T72] inet6_addr_add+0x30e/0xa40 [ 500.415699][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 500.415699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.415699][ T72] netlink_rcv_skb+0x130/0x360 [ 500.415699][ T72] netlink_unicast+0x449/0x710 [ 500.415699][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.415699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.415699][ T72] ___sys_sendmsg+0xee/0x170 [ 500.415699][ T72] __sys_sendmsg+0xcd/0x170 [ 500.415699][ T72] do_syscall_64+0xc6/0x1e0 [ 500.415699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.415699][ T72] [ 500.417876][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 500.417876][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 500.417876][ T72] ipv6_find_idev+0x102/0x170 [ 500.417876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.417876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.417876][ T72] netlink_rcv_skb+0x130/0x360 [ 500.417876][ T72] netlink_unicast+0x449/0x710 [ 500.417876][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.417876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.417876][ T72] ___sys_sendmsg+0xee/0x170 [ 500.417876][ T72] __sys_sendmsg+0xcd/0x170 [ 500.417876][ T72] do_syscall_64+0xc6/0x1e0 [ 500.417876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.417876][ T72] [ 500.419598][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 500.419598][ T72] neigh_parms_alloc+0x1e5/0x510 [ 500.419598][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 500.419598][ T72] ipv6_find_idev+0x102/0x170 [ 500.419598][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 500.419598][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 500.419598][ T72] netlink_rcv_skb+0x130/0x360 [ 500.419598][ T72] netlink_unicast+0x449/0x710 [ 500.419598][ T72] netlink_sendmsg+0x723/0xbe0 [ 500.419598][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 500.419598][ T72] ___sys_sendmsg+0xee/0x170 [ 500.419598][ T72] __sys_sendmsg+0xcd/0x170 [ 500.419598][ T72] do_syscall_64+0xc6/0x1e0 [ 500.419598][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 500.419598][ T72] [ 510.662925][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 510.663407][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 510.663407][ T72] netdev_get_by_index+0x5e/0x80 [ 510.663407][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.663407][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.663407][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.663407][ T72] ipv6_add_addr+0x411/0x2000 [ 510.663407][ T72] inet6_addr_add+0x30e/0xa40 [ 510.663407][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.663407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.663407][ T72] netlink_rcv_skb+0x130/0x360 [ 510.663407][ T72] netlink_unicast+0x449/0x710 [ 510.663407][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.663407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.663407][ T72] ___sys_sendmsg+0xee/0x170 [ 510.663407][ T72] __sys_sendmsg+0xcd/0x170 [ 510.663407][ T72] do_syscall_64+0xc6/0x1e0 [ 510.663407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.663407][ T72] [ 510.665427][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 510.665427][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.665427][ T72] ipv6_find_idev+0x102/0x170 [ 510.665427][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.665427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.665427][ T72] netlink_rcv_skb+0x130/0x360 [ 510.665427][ T72] netlink_unicast+0x449/0x710 [ 510.665427][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.665427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.665427][ T72] ___sys_sendmsg+0xee/0x170 [ 510.665427][ T72] __sys_sendmsg+0xcd/0x170 [ 510.665427][ T72] do_syscall_64+0xc6/0x1e0 [ 510.665427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.665427][ T72] [ 510.666964][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 510.666964][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.666964][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.666964][ T72] ipv6_find_idev+0x102/0x170 [ 510.666964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.666964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.666964][ T72] netlink_rcv_skb+0x130/0x360 [ 510.666964][ T72] netlink_unicast+0x449/0x710 [ 510.666964][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.666964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.666964][ T72] ___sys_sendmsg+0xee/0x170 [ 510.666964][ T72] __sys_sendmsg+0xcd/0x170 [ 510.666964][ T72] do_syscall_64+0xc6/0x1e0 [ 510.666964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.666964][ T72] [ 510.668688][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 510.668977][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 510.668977][ T72] netdev_get_by_index+0x5e/0x80 [ 510.668977][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.668977][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.668977][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.668977][ T72] ipv6_add_addr+0x411/0x2000 [ 510.668977][ T72] inet6_addr_add+0x30e/0xa40 [ 510.668977][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.668977][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.668977][ T72] netlink_rcv_skb+0x130/0x360 [ 510.668977][ T72] netlink_unicast+0x449/0x710 [ 510.668977][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.668977][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.668977][ T72] ___sys_sendmsg+0xee/0x170 [ 510.668977][ T72] __sys_sendmsg+0xcd/0x170 [ 510.668977][ T72] do_syscall_64+0xc6/0x1e0 [ 510.668977][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.668977][ T72] [ 510.670971][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 510.670971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.670971][ T72] ipv6_find_idev+0x102/0x170 [ 510.670971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.670971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.670971][ T72] netlink_rcv_skb+0x130/0x360 [ 510.670971][ T72] netlink_unicast+0x449/0x710 [ 510.670971][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.670971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.670971][ T72] ___sys_sendmsg+0xee/0x170 [ 510.670971][ T72] __sys_sendmsg+0xcd/0x170 [ 510.670971][ T72] do_syscall_64+0xc6/0x1e0 [ 510.670971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.670971][ T72] [ 510.672513][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 510.672513][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.672513][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.672513][ T72] ipv6_find_idev+0x102/0x170 [ 510.672513][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.672513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.672513][ T72] netlink_rcv_skb+0x130/0x360 [ 510.672513][ T72] netlink_unicast+0x449/0x710 [ 510.672513][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.672513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.672513][ T72] ___sys_sendmsg+0xee/0x170 [ 510.672513][ T72] __sys_sendmsg+0xcd/0x170 [ 510.672513][ T72] do_syscall_64+0xc6/0x1e0 [ 510.672513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.672513][ T72] [ 510.674209][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 510.674480][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 510.674480][ T72] netdev_get_by_index+0x5e/0x80 [ 510.674480][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.674480][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.674480][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.674480][ T72] ipv6_add_addr+0x411/0x2000 [ 510.674480][ T72] inet6_addr_add+0x30e/0xa40 [ 510.674480][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.674480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.674480][ T72] netlink_rcv_skb+0x130/0x360 [ 510.674480][ T72] netlink_unicast+0x449/0x710 [ 510.674480][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.674480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.674480][ T72] ___sys_sendmsg+0xee/0x170 [ 510.674480][ T72] __sys_sendmsg+0xcd/0x170 [ 510.674480][ T72] do_syscall_64+0xc6/0x1e0 [ 510.674480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.674480][ T72] [ 510.676480][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 510.676480][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.676480][ T72] ipv6_find_idev+0x102/0x170 [ 510.676480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.676480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.676480][ T72] netlink_rcv_skb+0x130/0x360 [ 510.676480][ T72] netlink_unicast+0x449/0x710 [ 510.676480][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.676480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.676480][ T72] ___sys_sendmsg+0xee/0x170 [ 510.676480][ T72] __sys_sendmsg+0xcd/0x170 [ 510.676480][ T72] do_syscall_64+0xc6/0x1e0 [ 510.676480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.676480][ T72] [ 510.678035][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 510.678035][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.678035][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.678035][ T72] ipv6_find_idev+0x102/0x170 [ 510.678035][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.678035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.678035][ T72] netlink_rcv_skb+0x130/0x360 [ 510.678035][ T72] netlink_unicast+0x449/0x710 [ 510.678035][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.678035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.678035][ T72] ___sys_sendmsg+0xee/0x170 [ 510.678035][ T72] __sys_sendmsg+0xcd/0x170 [ 510.678035][ T72] do_syscall_64+0xc6/0x1e0 [ 510.678035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.678035][ T72] [ 510.679725][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 510.680425][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 510.680425][ T72] netdev_get_by_index+0x5e/0x80 [ 510.680425][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.680425][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.680425][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.680425][ T72] ipv6_add_addr+0x411/0x2000 [ 510.680425][ T72] inet6_addr_add+0x30e/0xa40 [ 510.680425][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.680425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.680425][ T72] netlink_rcv_skb+0x130/0x360 [ 510.680425][ T72] netlink_unicast+0x449/0x710 [ 510.680425][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.680425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.680425][ T72] ___sys_sendmsg+0xee/0x170 [ 510.680425][ T72] __sys_sendmsg+0xcd/0x170 [ 510.680425][ T72] do_syscall_64+0xc6/0x1e0 [ 510.680425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.680425][ T72] [ 510.682402][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 510.682402][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.682402][ T72] ipv6_find_idev+0x102/0x170 [ 510.682402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.682402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.682402][ T72] netlink_rcv_skb+0x130/0x360 [ 510.682402][ T72] netlink_unicast+0x449/0x710 [ 510.682402][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.682402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.682402][ T72] ___sys_sendmsg+0xee/0x170 [ 510.682402][ T72] __sys_sendmsg+0xcd/0x170 [ 510.682402][ T72] do_syscall_64+0xc6/0x1e0 [ 510.682402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.682402][ T72] [ 510.683933][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 510.683933][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.683933][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.683933][ T72] ipv6_find_idev+0x102/0x170 [ 510.683933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.683933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.683933][ T72] netlink_rcv_skb+0x130/0x360 [ 510.683933][ T72] netlink_unicast+0x449/0x710 [ 510.683933][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.683933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.683933][ T72] ___sys_sendmsg+0xee/0x170 [ 510.683933][ T72] __sys_sendmsg+0xcd/0x170 [ 510.683933][ T72] do_syscall_64+0xc6/0x1e0 [ 510.683933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.683933][ T72] [ 510.685660][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 510.685974][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 510.685974][ T72] netdev_get_by_index+0x5e/0x80 [ 510.685974][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.685974][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.685974][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.685974][ T72] ipv6_add_addr+0x411/0x2000 [ 510.685974][ T72] inet6_addr_add+0x30e/0xa40 [ 510.685974][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.685974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.685974][ T72] netlink_rcv_skb+0x130/0x360 [ 510.685974][ T72] netlink_unicast+0x449/0x710 [ 510.685974][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.685974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.685974][ T72] ___sys_sendmsg+0xee/0x170 [ 510.685974][ T72] __sys_sendmsg+0xcd/0x170 [ 510.685974][ T72] do_syscall_64+0xc6/0x1e0 [ 510.685974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.685974][ T72] [ 510.687967][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 510.687967][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.687967][ T72] ipv6_find_idev+0x102/0x170 [ 510.687967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.687967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.687967][ T72] netlink_rcv_skb+0x130/0x360 [ 510.687967][ T72] netlink_unicast+0x449/0x710 [ 510.687967][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.687967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.687967][ T72] ___sys_sendmsg+0xee/0x170 [ 510.687967][ T72] __sys_sendmsg+0xcd/0x170 [ 510.687967][ T72] do_syscall_64+0xc6/0x1e0 [ 510.687967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.687967][ T72] [ 510.689584][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 510.689584][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.689584][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.689584][ T72] ipv6_find_idev+0x102/0x170 [ 510.689584][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.689584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.689584][ T72] netlink_rcv_skb+0x130/0x360 [ 510.689584][ T72] netlink_unicast+0x449/0x710 [ 510.689584][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.689584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.689584][ T72] ___sys_sendmsg+0xee/0x170 [ 510.689584][ T72] __sys_sendmsg+0xcd/0x170 [ 510.689584][ T72] do_syscall_64+0xc6/0x1e0 [ 510.689584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.689584][ T72] [ 510.691307][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 510.691617][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 510.691617][ T72] netdev_get_by_index+0x5e/0x80 [ 510.691617][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.691617][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.691617][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.691617][ T72] ipv6_add_addr+0x411/0x2000 [ 510.691617][ T72] inet6_addr_add+0x30e/0xa40 [ 510.691617][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.691617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.691617][ T72] netlink_rcv_skb+0x130/0x360 [ 510.691617][ T72] netlink_unicast+0x449/0x710 [ 510.691617][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.691617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.691617][ T72] ___sys_sendmsg+0xee/0x170 [ 510.691617][ T72] __sys_sendmsg+0xcd/0x170 [ 510.691617][ T72] do_syscall_64+0xc6/0x1e0 [ 510.691617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.691617][ T72] [ 510.693864][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 510.693864][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.693864][ T72] ipv6_find_idev+0x102/0x170 [ 510.693864][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.693864][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.693864][ T72] netlink_rcv_skb+0x130/0x360 [ 510.693864][ T72] netlink_unicast+0x449/0x710 [ 510.693864][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.693864][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.693864][ T72] ___sys_sendmsg+0xee/0x170 [ 510.693864][ T72] __sys_sendmsg+0xcd/0x170 [ 510.693864][ T72] do_syscall_64+0xc6/0x1e0 [ 510.693864][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.693864][ T72] [ 510.695580][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 510.695580][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.695580][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.695580][ T72] ipv6_find_idev+0x102/0x170 [ 510.695580][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.695580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.695580][ T72] netlink_rcv_skb+0x130/0x360 [ 510.695580][ T72] netlink_unicast+0x449/0x710 [ 510.695580][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.695580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.695580][ T72] ___sys_sendmsg+0xee/0x170 [ 510.695580][ T72] __sys_sendmsg+0xcd/0x170 [ 510.695580][ T72] do_syscall_64+0xc6/0x1e0 [ 510.695580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.695580][ T72] [ 510.697473][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 510.697837][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 510.697837][ T72] netdev_get_by_index+0x5e/0x80 [ 510.697837][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.697837][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.697837][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.697837][ T72] ipv6_add_addr+0x411/0x2000 [ 510.697837][ T72] inet6_addr_add+0x30e/0xa40 [ 510.697837][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.697837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.697837][ T72] netlink_rcv_skb+0x130/0x360 [ 510.697837][ T72] netlink_unicast+0x449/0x710 [ 510.697837][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.697837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.697837][ T72] ___sys_sendmsg+0xee/0x170 [ 510.697837][ T72] __sys_sendmsg+0xcd/0x170 [ 510.697837][ T72] do_syscall_64+0xc6/0x1e0 [ 510.697837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.697837][ T72] [ 510.700013][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 510.700013][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.700013][ T72] ipv6_find_idev+0x102/0x170 [ 510.700013][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.700013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.700013][ T72] netlink_rcv_skb+0x130/0x360 [ 510.700013][ T72] netlink_unicast+0x449/0x710 [ 510.700013][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.700013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.700013][ T72] ___sys_sendmsg+0xee/0x170 [ 510.700013][ T72] __sys_sendmsg+0xcd/0x170 [ 510.700013][ T72] do_syscall_64+0xc6/0x1e0 [ 510.700013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.700013][ T72] [ 510.701787][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 510.701787][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.701787][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.701787][ T72] ipv6_find_idev+0x102/0x170 [ 510.701787][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.701787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.701787][ T72] netlink_rcv_skb+0x130/0x360 [ 510.701787][ T72] netlink_unicast+0x449/0x710 [ 510.701787][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.701787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.701787][ T72] ___sys_sendmsg+0xee/0x170 [ 510.701787][ T72] __sys_sendmsg+0xcd/0x170 [ 510.701787][ T72] do_syscall_64+0xc6/0x1e0 [ 510.701787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.701787][ T72] [ 510.703688][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 510.704391][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 510.704391][ T72] netdev_get_by_index+0x5e/0x80 [ 510.704391][ T72] fib6_nh_init+0x3d8/0x15b0 [ 510.704391][ T72] ip6_route_info_create+0xf18/0x17d0 [ 510.704391][ T72] addrconf_f6i_alloc+0x244/0x410 [ 510.704391][ T72] ipv6_add_addr+0x411/0x2000 [ 510.704391][ T72] inet6_addr_add+0x30e/0xa40 [ 510.704391][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 510.704391][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.704391][ T72] netlink_rcv_skb+0x130/0x360 [ 510.704391][ T72] netlink_unicast+0x449/0x710 [ 510.704391][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.704391][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.704391][ T72] ___sys_sendmsg+0xee/0x170 [ 510.704391][ T72] __sys_sendmsg+0xcd/0x170 [ 510.704391][ T72] do_syscall_64+0xc6/0x1e0 [ 510.704391][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.704391][ T72] [ 510.706596][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 510.706596][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 510.706596][ T72] ipv6_find_idev+0x102/0x170 [ 510.706596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.706596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.706596][ T72] netlink_rcv_skb+0x130/0x360 [ 510.706596][ T72] netlink_unicast+0x449/0x710 [ 510.706596][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.706596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.706596][ T72] ___sys_sendmsg+0xee/0x170 [ 510.706596][ T72] __sys_sendmsg+0xcd/0x170 [ 510.706596][ T72] do_syscall_64+0xc6/0x1e0 [ 510.706596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.706596][ T72] [ 510.708320][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 510.708320][ T72] neigh_parms_alloc+0x1e5/0x510 [ 510.708320][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 510.708320][ T72] ipv6_find_idev+0x102/0x170 [ 510.708320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 510.708320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 510.708320][ T72] netlink_rcv_skb+0x130/0x360 [ 510.708320][ T72] netlink_unicast+0x449/0x710 [ 510.708320][ T72] netlink_sendmsg+0x723/0xbe0 [ 510.708320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 510.708320][ T72] ___sys_sendmsg+0xee/0x170 [ 510.708320][ T72] __sys_sendmsg+0xcd/0x170 [ 510.708320][ T72] do_syscall_64+0xc6/0x1e0 [ 510.708320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 510.708320][ T72] [ 521.158854][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 521.159370][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 521.159370][ T72] netdev_get_by_index+0x5e/0x80 [ 521.159370][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.159370][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.159370][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.159370][ T72] ipv6_add_addr+0x411/0x2000 [ 521.159370][ T72] inet6_addr_add+0x30e/0xa40 [ 521.159370][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.159370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.159370][ T72] netlink_rcv_skb+0x130/0x360 [ 521.159370][ T72] netlink_unicast+0x449/0x710 [ 521.159370][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.159370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.159370][ T72] ___sys_sendmsg+0xee/0x170 [ 521.159370][ T72] __sys_sendmsg+0xcd/0x170 [ 521.159370][ T72] do_syscall_64+0xc6/0x1e0 [ 521.159370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.159370][ T72] [ 521.162451][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 521.162451][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.162451][ T72] ipv6_find_idev+0x102/0x170 [ 521.162451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.162451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.162451][ T72] netlink_rcv_skb+0x130/0x360 [ 521.162451][ T72] netlink_unicast+0x449/0x710 [ 521.162451][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.162451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.162451][ T72] ___sys_sendmsg+0xee/0x170 [ 521.162451][ T72] __sys_sendmsg+0xcd/0x170 [ 521.162451][ T72] do_syscall_64+0xc6/0x1e0 [ 521.162451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.162451][ T72] [ 521.164912][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 521.164912][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.164912][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.164912][ T72] ipv6_find_idev+0x102/0x170 [ 521.164912][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.164912][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.164912][ T72] netlink_rcv_skb+0x130/0x360 [ 521.164912][ T72] netlink_unicast+0x449/0x710 [ 521.164912][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.164912][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.164912][ T72] ___sys_sendmsg+0xee/0x170 [ 521.164912][ T72] __sys_sendmsg+0xcd/0x170 [ 521.164912][ T72] do_syscall_64+0xc6/0x1e0 [ 521.164912][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.164912][ T72] [ 521.167444][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 521.167875][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 521.167875][ T72] netdev_get_by_index+0x5e/0x80 [ 521.167875][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.167875][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.167875][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.167875][ T72] ipv6_add_addr+0x411/0x2000 [ 521.167875][ T72] inet6_addr_add+0x30e/0xa40 [ 521.167875][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.167875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.167875][ T72] netlink_rcv_skb+0x130/0x360 [ 521.167875][ T72] netlink_unicast+0x449/0x710 [ 521.167875][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.167875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.167875][ T72] ___sys_sendmsg+0xee/0x170 [ 521.167875][ T72] __sys_sendmsg+0xcd/0x170 [ 521.167875][ T72] do_syscall_64+0xc6/0x1e0 [ 521.167875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.167875][ T72] [ 521.170919][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 521.170919][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.170919][ T72] ipv6_find_idev+0x102/0x170 [ 521.170919][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.170919][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.170919][ T72] netlink_rcv_skb+0x130/0x360 [ 521.170919][ T72] netlink_unicast+0x449/0x710 [ 521.170919][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.170919][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.170919][ T72] ___sys_sendmsg+0xee/0x170 [ 521.170919][ T72] __sys_sendmsg+0xcd/0x170 [ 521.170919][ T72] do_syscall_64+0xc6/0x1e0 [ 521.170919][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.170919][ T72] [ 521.173321][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 521.173321][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.173321][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.173321][ T72] ipv6_find_idev+0x102/0x170 [ 521.173321][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.173321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.173321][ T72] netlink_rcv_skb+0x130/0x360 [ 521.173321][ T72] netlink_unicast+0x449/0x710 [ 521.173321][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.173321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.173321][ T72] ___sys_sendmsg+0xee/0x170 [ 521.173321][ T72] __sys_sendmsg+0xcd/0x170 [ 521.173321][ T72] do_syscall_64+0xc6/0x1e0 [ 521.173321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.173321][ T72] [ 521.175926][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 521.176346][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 521.176346][ T72] netdev_get_by_index+0x5e/0x80 [ 521.176346][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.176346][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.176346][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.176346][ T72] ipv6_add_addr+0x411/0x2000 [ 521.176346][ T72] inet6_addr_add+0x30e/0xa40 [ 521.176346][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.176346][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.176346][ T72] netlink_rcv_skb+0x130/0x360 [ 521.176346][ T72] netlink_unicast+0x449/0x710 [ 521.176346][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.176346][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.176346][ T72] ___sys_sendmsg+0xee/0x170 [ 521.176346][ T72] __sys_sendmsg+0xcd/0x170 [ 521.176346][ T72] do_syscall_64+0xc6/0x1e0 [ 521.176346][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.176346][ T72] [ 521.179426][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 521.179426][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.179426][ T72] ipv6_find_idev+0x102/0x170 [ 521.179426][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.179426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.179426][ T72] netlink_rcv_skb+0x130/0x360 [ 521.179426][ T72] netlink_unicast+0x449/0x710 [ 521.179426][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.179426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.179426][ T72] ___sys_sendmsg+0xee/0x170 [ 521.179426][ T72] __sys_sendmsg+0xcd/0x170 [ 521.179426][ T72] do_syscall_64+0xc6/0x1e0 [ 521.179426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.179426][ T72] [ 521.181803][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 521.181803][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.181803][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.181803][ T72] ipv6_find_idev+0x102/0x170 [ 521.181803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.181803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.181803][ T72] netlink_rcv_skb+0x130/0x360 [ 521.181803][ T72] netlink_unicast+0x449/0x710 [ 521.181803][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.181803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.181803][ T72] ___sys_sendmsg+0xee/0x170 [ 521.181803][ T72] __sys_sendmsg+0xcd/0x170 [ 521.181803][ T72] do_syscall_64+0xc6/0x1e0 [ 521.181803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.181803][ T72] [ 521.184349][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 521.184747][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 521.184747][ T72] netdev_get_by_index+0x5e/0x80 [ 521.184747][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.184747][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.184747][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.184747][ T72] ipv6_add_addr+0x411/0x2000 [ 521.184747][ T72] inet6_addr_add+0x30e/0xa40 [ 521.184747][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.184747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.184747][ T72] netlink_rcv_skb+0x130/0x360 [ 521.184747][ T72] netlink_unicast+0x449/0x710 [ 521.184747][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.184747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.184747][ T72] ___sys_sendmsg+0xee/0x170 [ 521.184747][ T72] __sys_sendmsg+0xcd/0x170 [ 521.184747][ T72] do_syscall_64+0xc6/0x1e0 [ 521.184747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.184747][ T72] [ 521.187773][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 521.187773][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.187773][ T72] ipv6_find_idev+0x102/0x170 [ 521.187773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.187773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.187773][ T72] netlink_rcv_skb+0x130/0x360 [ 521.187773][ T72] netlink_unicast+0x449/0x710 [ 521.187773][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.187773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.187773][ T72] ___sys_sendmsg+0xee/0x170 [ 521.187773][ T72] __sys_sendmsg+0xcd/0x170 [ 521.187773][ T72] do_syscall_64+0xc6/0x1e0 [ 521.187773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.187773][ T72] [ 521.190448][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 521.190448][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.190448][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.190448][ T72] ipv6_find_idev+0x102/0x170 [ 521.190448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.190448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.190448][ T72] netlink_rcv_skb+0x130/0x360 [ 521.190448][ T72] netlink_unicast+0x449/0x710 [ 521.190448][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.190448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.190448][ T72] ___sys_sendmsg+0xee/0x170 [ 521.190448][ T72] __sys_sendmsg+0xcd/0x170 [ 521.190448][ T72] do_syscall_64+0xc6/0x1e0 [ 521.190448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.190448][ T72] [ 521.193217][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 521.193629][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 521.193629][ T72] netdev_get_by_index+0x5e/0x80 [ 521.193629][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.193629][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.193629][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.193629][ T72] ipv6_add_addr+0x411/0x2000 [ 521.193629][ T72] inet6_addr_add+0x30e/0xa40 [ 521.193629][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.193629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.193629][ T72] netlink_rcv_skb+0x130/0x360 [ 521.193629][ T72] netlink_unicast+0x449/0x710 [ 521.193629][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.193629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.193629][ T72] ___sys_sendmsg+0xee/0x170 [ 521.193629][ T72] __sys_sendmsg+0xcd/0x170 [ 521.193629][ T72] do_syscall_64+0xc6/0x1e0 [ 521.193629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.193629][ T72] [ 521.196725][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 521.196725][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.196725][ T72] ipv6_find_idev+0x102/0x170 [ 521.196725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.196725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.196725][ T72] netlink_rcv_skb+0x130/0x360 [ 521.196725][ T72] netlink_unicast+0x449/0x710 [ 521.196725][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.196725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.196725][ T72] ___sys_sendmsg+0xee/0x170 [ 521.196725][ T72] __sys_sendmsg+0xcd/0x170 [ 521.196725][ T72] do_syscall_64+0xc6/0x1e0 [ 521.196725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.196725][ T72] [ 521.199144][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 521.199144][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.199144][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.199144][ T72] ipv6_find_idev+0x102/0x170 [ 521.199144][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.199144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.199144][ T72] netlink_rcv_skb+0x130/0x360 [ 521.199144][ T72] netlink_unicast+0x449/0x710 [ 521.199144][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.199144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.199144][ T72] ___sys_sendmsg+0xee/0x170 [ 521.199144][ T72] __sys_sendmsg+0xcd/0x170 [ 521.199144][ T72] do_syscall_64+0xc6/0x1e0 [ 521.199144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.199144][ T72] [ 521.202640][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 521.203151][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 521.203151][ T72] netdev_get_by_index+0x5e/0x80 [ 521.203151][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.203151][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.203151][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.203151][ T72] ipv6_add_addr+0x411/0x2000 [ 521.203151][ T72] inet6_addr_add+0x30e/0xa40 [ 521.203151][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.203151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.203151][ T72] netlink_rcv_skb+0x130/0x360 [ 521.203151][ T72] netlink_unicast+0x449/0x710 [ 521.203151][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.203151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.203151][ T72] ___sys_sendmsg+0xee/0x170 [ 521.203151][ T72] __sys_sendmsg+0xcd/0x170 [ 521.203151][ T72] do_syscall_64+0xc6/0x1e0 [ 521.203151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.203151][ T72] [ 521.206550][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 521.206550][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.206550][ T72] ipv6_find_idev+0x102/0x170 [ 521.206550][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.206550][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.206550][ T72] netlink_rcv_skb+0x130/0x360 [ 521.206550][ T72] netlink_unicast+0x449/0x710 [ 521.206550][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.206550][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.206550][ T72] ___sys_sendmsg+0xee/0x170 [ 521.206550][ T72] __sys_sendmsg+0xcd/0x170 [ 521.206550][ T72] do_syscall_64+0xc6/0x1e0 [ 521.206550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.206550][ T72] [ 521.209150][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 521.209150][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.209150][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.209150][ T72] ipv6_find_idev+0x102/0x170 [ 521.209150][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.209150][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.209150][ T72] netlink_rcv_skb+0x130/0x360 [ 521.209150][ T72] netlink_unicast+0x449/0x710 [ 521.209150][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.209150][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.209150][ T72] ___sys_sendmsg+0xee/0x170 [ 521.209150][ T72] __sys_sendmsg+0xcd/0x170 [ 521.209150][ T72] do_syscall_64+0xc6/0x1e0 [ 521.209150][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.209150][ T72] [ 521.212264][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 521.212679][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 521.212679][ T72] netdev_get_by_index+0x5e/0x80 [ 521.212679][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.212679][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.212679][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.212679][ T72] ipv6_add_addr+0x411/0x2000 [ 521.212679][ T72] inet6_addr_add+0x30e/0xa40 [ 521.212679][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.212679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.212679][ T72] netlink_rcv_skb+0x130/0x360 [ 521.212679][ T72] netlink_unicast+0x449/0x710 [ 521.212679][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.212679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.212679][ T72] ___sys_sendmsg+0xee/0x170 [ 521.212679][ T72] __sys_sendmsg+0xcd/0x170 [ 521.212679][ T72] do_syscall_64+0xc6/0x1e0 [ 521.212679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.212679][ T72] [ 521.216202][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 521.216202][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.216202][ T72] ipv6_find_idev+0x102/0x170 [ 521.216202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.216202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.216202][ T72] netlink_rcv_skb+0x130/0x360 [ 521.216202][ T72] netlink_unicast+0x449/0x710 [ 521.216202][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.216202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.216202][ T72] ___sys_sendmsg+0xee/0x170 [ 521.216202][ T72] __sys_sendmsg+0xcd/0x170 [ 521.216202][ T72] do_syscall_64+0xc6/0x1e0 [ 521.216202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.216202][ T72] [ 521.218742][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 521.218742][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.218742][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.218742][ T72] ipv6_find_idev+0x102/0x170 [ 521.218742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.218742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.218742][ T72] netlink_rcv_skb+0x130/0x360 [ 521.218742][ T72] netlink_unicast+0x449/0x710 [ 521.218742][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.218742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.218742][ T72] ___sys_sendmsg+0xee/0x170 [ 521.218742][ T72] __sys_sendmsg+0xcd/0x170 [ 521.218742][ T72] do_syscall_64+0xc6/0x1e0 [ 521.218742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.218742][ T72] [ 521.221676][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 521.222188][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 521.222188][ T72] netdev_get_by_index+0x5e/0x80 [ 521.222188][ T72] fib6_nh_init+0x3d8/0x15b0 [ 521.222188][ T72] ip6_route_info_create+0xf18/0x17d0 [ 521.222188][ T72] addrconf_f6i_alloc+0x244/0x410 [ 521.222188][ T72] ipv6_add_addr+0x411/0x2000 [ 521.222188][ T72] inet6_addr_add+0x30e/0xa40 [ 521.222188][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 521.222188][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.222188][ T72] netlink_rcv_skb+0x130/0x360 [ 521.222188][ T72] netlink_unicast+0x449/0x710 [ 521.222188][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.222188][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.222188][ T72] ___sys_sendmsg+0xee/0x170 [ 521.222188][ T72] __sys_sendmsg+0xcd/0x170 [ 521.222188][ T72] do_syscall_64+0xc6/0x1e0 [ 521.222188][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.222188][ T72] [ 521.225644][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 521.225644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 521.225644][ T72] ipv6_find_idev+0x102/0x170 [ 521.225644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.225644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.225644][ T72] netlink_rcv_skb+0x130/0x360 [ 521.225644][ T72] netlink_unicast+0x449/0x710 [ 521.225644][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.225644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.225644][ T72] ___sys_sendmsg+0xee/0x170 [ 521.225644][ T72] __sys_sendmsg+0xcd/0x170 [ 521.225644][ T72] do_syscall_64+0xc6/0x1e0 [ 521.225644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.225644][ T72] [ 521.228351][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 521.228351][ T72] neigh_parms_alloc+0x1e5/0x510 [ 521.228351][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 521.228351][ T72] ipv6_find_idev+0x102/0x170 [ 521.228351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 521.228351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 521.228351][ T72] netlink_rcv_skb+0x130/0x360 [ 521.228351][ T72] netlink_unicast+0x449/0x710 [ 521.228351][ T72] netlink_sendmsg+0x723/0xbe0 [ 521.228351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 521.228351][ T72] ___sys_sendmsg+0xee/0x170 [ 521.228351][ T72] __sys_sendmsg+0xcd/0x170 [ 521.228351][ T72] do_syscall_64+0xc6/0x1e0 [ 521.228351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 521.228351][ T72] [ 531.366815][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 531.367294][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 531.367294][ T72] netdev_get_by_index+0x5e/0x80 [ 531.367294][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.367294][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.367294][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.367294][ T72] ipv6_add_addr+0x411/0x2000 [ 531.367294][ T72] inet6_addr_add+0x30e/0xa40 [ 531.367294][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.367294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.367294][ T72] netlink_rcv_skb+0x130/0x360 [ 531.367294][ T72] netlink_unicast+0x449/0x710 [ 531.367294][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.367294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.367294][ T72] ___sys_sendmsg+0xee/0x170 [ 531.367294][ T72] __sys_sendmsg+0xcd/0x170 [ 531.367294][ T72] do_syscall_64+0xc6/0x1e0 [ 531.367294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.367294][ T72] [ 531.369424][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 531.369424][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.369424][ T72] ipv6_find_idev+0x102/0x170 [ 531.369424][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.369424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.369424][ T72] netlink_rcv_skb+0x130/0x360 [ 531.369424][ T72] netlink_unicast+0x449/0x710 [ 531.369424][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.369424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.369424][ T72] ___sys_sendmsg+0xee/0x170 [ 531.369424][ T72] __sys_sendmsg+0xcd/0x170 [ 531.369424][ T72] do_syscall_64+0xc6/0x1e0 [ 531.369424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.369424][ T72] [ 531.371031][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 531.371031][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.371031][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.371031][ T72] ipv6_find_idev+0x102/0x170 [ 531.371031][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.371031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.371031][ T72] netlink_rcv_skb+0x130/0x360 [ 531.371031][ T72] netlink_unicast+0x449/0x710 [ 531.371031][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.371031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.371031][ T72] ___sys_sendmsg+0xee/0x170 [ 531.371031][ T72] __sys_sendmsg+0xcd/0x170 [ 531.371031][ T72] do_syscall_64+0xc6/0x1e0 [ 531.371031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.371031][ T72] [ 531.372728][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 531.373010][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 531.373010][ T72] netdev_get_by_index+0x5e/0x80 [ 531.373010][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.373010][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.373010][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.373010][ T72] ipv6_add_addr+0x411/0x2000 [ 531.373010][ T72] inet6_addr_add+0x30e/0xa40 [ 531.373010][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.373010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.373010][ T72] netlink_rcv_skb+0x130/0x360 [ 531.373010][ T72] netlink_unicast+0x449/0x710 [ 531.373010][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.373010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.373010][ T72] ___sys_sendmsg+0xee/0x170 [ 531.373010][ T72] __sys_sendmsg+0xcd/0x170 [ 531.373010][ T72] do_syscall_64+0xc6/0x1e0 [ 531.373010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.373010][ T72] [ 531.375141][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 531.375141][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.375141][ T72] ipv6_find_idev+0x102/0x170 [ 531.375141][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.375141][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.375141][ T72] netlink_rcv_skb+0x130/0x360 [ 531.375141][ T72] netlink_unicast+0x449/0x710 [ 531.375141][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.375141][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.375141][ T72] ___sys_sendmsg+0xee/0x170 [ 531.375141][ T72] __sys_sendmsg+0xcd/0x170 [ 531.375141][ T72] do_syscall_64+0xc6/0x1e0 [ 531.375141][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.375141][ T72] [ 531.376660][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 531.376660][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.376660][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.376660][ T72] ipv6_find_idev+0x102/0x170 [ 531.376660][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.376660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.376660][ T72] netlink_rcv_skb+0x130/0x360 [ 531.376660][ T72] netlink_unicast+0x449/0x710 [ 531.376660][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.376660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.376660][ T72] ___sys_sendmsg+0xee/0x170 [ 531.376660][ T72] __sys_sendmsg+0xcd/0x170 [ 531.376660][ T72] do_syscall_64+0xc6/0x1e0 [ 531.376660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.376660][ T72] [ 531.378371][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 531.378708][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 531.378708][ T72] netdev_get_by_index+0x5e/0x80 [ 531.378708][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.378708][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.378708][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.378708][ T72] ipv6_add_addr+0x411/0x2000 [ 531.378708][ T72] inet6_addr_add+0x30e/0xa40 [ 531.378708][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.378708][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.378708][ T72] netlink_rcv_skb+0x130/0x360 [ 531.378708][ T72] netlink_unicast+0x449/0x710 [ 531.378708][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.378708][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.378708][ T72] ___sys_sendmsg+0xee/0x170 [ 531.378708][ T72] __sys_sendmsg+0xcd/0x170 [ 531.378708][ T72] do_syscall_64+0xc6/0x1e0 [ 531.378708][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.378708][ T72] [ 531.380763][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 531.380763][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.380763][ T72] ipv6_find_idev+0x102/0x170 [ 531.380763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.380763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.380763][ T72] netlink_rcv_skb+0x130/0x360 [ 531.380763][ T72] netlink_unicast+0x449/0x710 [ 531.380763][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.380763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.380763][ T72] ___sys_sendmsg+0xee/0x170 [ 531.380763][ T72] __sys_sendmsg+0xcd/0x170 [ 531.380763][ T72] do_syscall_64+0xc6/0x1e0 [ 531.380763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.380763][ T72] [ 531.382332][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 531.382332][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.382332][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.382332][ T72] ipv6_find_idev+0x102/0x170 [ 531.382332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.382332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.382332][ T72] netlink_rcv_skb+0x130/0x360 [ 531.382332][ T72] netlink_unicast+0x449/0x710 [ 531.382332][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.382332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.382332][ T72] ___sys_sendmsg+0xee/0x170 [ 531.382332][ T72] __sys_sendmsg+0xcd/0x170 [ 531.382332][ T72] do_syscall_64+0xc6/0x1e0 [ 531.382332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.382332][ T72] [ 531.384114][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 531.384408][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 531.384408][ T72] netdev_get_by_index+0x5e/0x80 [ 531.384408][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.384408][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.384408][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.384408][ T72] ipv6_add_addr+0x411/0x2000 [ 531.384408][ T72] inet6_addr_add+0x30e/0xa40 [ 531.384408][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.384408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.384408][ T72] netlink_rcv_skb+0x130/0x360 [ 531.384408][ T72] netlink_unicast+0x449/0x710 [ 531.384408][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.384408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.384408][ T72] ___sys_sendmsg+0xee/0x170 [ 531.384408][ T72] __sys_sendmsg+0xcd/0x170 [ 531.384408][ T72] do_syscall_64+0xc6/0x1e0 [ 531.384408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.384408][ T72] [ 531.386445][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 531.386445][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.386445][ T72] ipv6_find_idev+0x102/0x170 [ 531.386445][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.386445][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.386445][ T72] netlink_rcv_skb+0x130/0x360 [ 531.386445][ T72] netlink_unicast+0x449/0x710 [ 531.386445][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.386445][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.386445][ T72] ___sys_sendmsg+0xee/0x170 [ 531.386445][ T72] __sys_sendmsg+0xcd/0x170 [ 531.386445][ T72] do_syscall_64+0xc6/0x1e0 [ 531.386445][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.386445][ T72] [ 531.388053][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 531.388053][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.388053][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.388053][ T72] ipv6_find_idev+0x102/0x170 [ 531.388053][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.388053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.388053][ T72] netlink_rcv_skb+0x130/0x360 [ 531.388053][ T72] netlink_unicast+0x449/0x710 [ 531.388053][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.388053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.388053][ T72] ___sys_sendmsg+0xee/0x170 [ 531.388053][ T72] __sys_sendmsg+0xcd/0x170 [ 531.388053][ T72] do_syscall_64+0xc6/0x1e0 [ 531.388053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.388053][ T72] [ 531.390219][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 531.390510][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 531.390510][ T72] netdev_get_by_index+0x5e/0x80 [ 531.390510][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.390510][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.390510][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.390510][ T72] ipv6_add_addr+0x411/0x2000 [ 531.390510][ T72] inet6_addr_add+0x30e/0xa40 [ 531.390510][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.390510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.390510][ T72] netlink_rcv_skb+0x130/0x360 [ 531.390510][ T72] netlink_unicast+0x449/0x710 [ 531.390510][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.390510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.390510][ T72] ___sys_sendmsg+0xee/0x170 [ 531.390510][ T72] __sys_sendmsg+0xcd/0x170 [ 531.390510][ T72] do_syscall_64+0xc6/0x1e0 [ 531.390510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.390510][ T72] [ 531.392555][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 531.392555][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.392555][ T72] ipv6_find_idev+0x102/0x170 [ 531.392555][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.392555][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.392555][ T72] netlink_rcv_skb+0x130/0x360 [ 531.392555][ T72] netlink_unicast+0x449/0x710 [ 531.392555][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.392555][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.392555][ T72] ___sys_sendmsg+0xee/0x170 [ 531.392555][ T72] __sys_sendmsg+0xcd/0x170 [ 531.392555][ T72] do_syscall_64+0xc6/0x1e0 [ 531.392555][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.392555][ T72] [ 531.394189][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 531.394189][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.394189][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.394189][ T72] ipv6_find_idev+0x102/0x170 [ 531.394189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.394189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.394189][ T72] netlink_rcv_skb+0x130/0x360 [ 531.394189][ T72] netlink_unicast+0x449/0x710 [ 531.394189][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.394189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.394189][ T72] ___sys_sendmsg+0xee/0x170 [ 531.394189][ T72] __sys_sendmsg+0xcd/0x170 [ 531.394189][ T72] do_syscall_64+0xc6/0x1e0 [ 531.394189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.394189][ T72] [ 531.395891][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 531.396150][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 531.396150][ T72] netdev_get_by_index+0x5e/0x80 [ 531.396150][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.396150][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.396150][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.396150][ T72] ipv6_add_addr+0x411/0x2000 [ 531.396150][ T72] inet6_addr_add+0x30e/0xa40 [ 531.396150][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.396150][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.396150][ T72] netlink_rcv_skb+0x130/0x360 [ 531.396150][ T72] netlink_unicast+0x449/0x710 [ 531.396150][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.396150][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.396150][ T72] ___sys_sendmsg+0xee/0x170 [ 531.396150][ T72] __sys_sendmsg+0xcd/0x170 [ 531.396150][ T72] do_syscall_64+0xc6/0x1e0 [ 531.396150][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.396150][ T72] [ 531.398298][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 531.398298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.398298][ T72] ipv6_find_idev+0x102/0x170 [ 531.398298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.398298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.398298][ T72] netlink_rcv_skb+0x130/0x360 [ 531.398298][ T72] netlink_unicast+0x449/0x710 [ 531.398298][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.398298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.398298][ T72] ___sys_sendmsg+0xee/0x170 [ 531.398298][ T72] __sys_sendmsg+0xcd/0x170 [ 531.398298][ T72] do_syscall_64+0xc6/0x1e0 [ 531.398298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.398298][ T72] [ 531.400083][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 531.400083][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.400083][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.400083][ T72] ipv6_find_idev+0x102/0x170 [ 531.400083][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.400083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.400083][ T72] netlink_rcv_skb+0x130/0x360 [ 531.400083][ T72] netlink_unicast+0x449/0x710 [ 531.400083][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.400083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.400083][ T72] ___sys_sendmsg+0xee/0x170 [ 531.400083][ T72] __sys_sendmsg+0xcd/0x170 [ 531.400083][ T72] do_syscall_64+0xc6/0x1e0 [ 531.400083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.400083][ T72] [ 531.401970][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 531.402231][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 531.402231][ T72] netdev_get_by_index+0x5e/0x80 [ 531.402231][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.402231][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.402231][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.402231][ T72] ipv6_add_addr+0x411/0x2000 [ 531.402231][ T72] inet6_addr_add+0x30e/0xa40 [ 531.402231][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.402231][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.402231][ T72] netlink_rcv_skb+0x130/0x360 [ 531.402231][ T72] netlink_unicast+0x449/0x710 [ 531.402231][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.402231][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.402231][ T72] ___sys_sendmsg+0xee/0x170 [ 531.402231][ T72] __sys_sendmsg+0xcd/0x170 [ 531.402231][ T72] do_syscall_64+0xc6/0x1e0 [ 531.402231][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.402231][ T72] [ 531.404437][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 531.404437][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.404437][ T72] ipv6_find_idev+0x102/0x170 [ 531.404437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.404437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.404437][ T72] netlink_rcv_skb+0x130/0x360 [ 531.404437][ T72] netlink_unicast+0x449/0x710 [ 531.404437][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.404437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.404437][ T72] ___sys_sendmsg+0xee/0x170 [ 531.404437][ T72] __sys_sendmsg+0xcd/0x170 [ 531.404437][ T72] do_syscall_64+0xc6/0x1e0 [ 531.404437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.404437][ T72] [ 531.406128][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 531.406128][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.406128][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.406128][ T72] ipv6_find_idev+0x102/0x170 [ 531.406128][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.406128][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.406128][ T72] netlink_rcv_skb+0x130/0x360 [ 531.406128][ T72] netlink_unicast+0x449/0x710 [ 531.406128][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.406128][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.406128][ T72] ___sys_sendmsg+0xee/0x170 [ 531.406128][ T72] __sys_sendmsg+0xcd/0x170 [ 531.406128][ T72] do_syscall_64+0xc6/0x1e0 [ 531.406128][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.406128][ T72] [ 531.408092][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 531.408368][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 531.408368][ T72] netdev_get_by_index+0x5e/0x80 [ 531.408368][ T72] fib6_nh_init+0x3d8/0x15b0 [ 531.408368][ T72] ip6_route_info_create+0xf18/0x17d0 [ 531.408368][ T72] addrconf_f6i_alloc+0x244/0x410 [ 531.408368][ T72] ipv6_add_addr+0x411/0x2000 [ 531.408368][ T72] inet6_addr_add+0x30e/0xa40 [ 531.408368][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 531.408368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.408368][ T72] netlink_rcv_skb+0x130/0x360 [ 531.408368][ T72] netlink_unicast+0x449/0x710 [ 531.408368][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.408368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.408368][ T72] ___sys_sendmsg+0xee/0x170 [ 531.408368][ T72] __sys_sendmsg+0xcd/0x170 [ 531.408368][ T72] do_syscall_64+0xc6/0x1e0 [ 531.408368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.408368][ T72] [ 531.410740][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 531.410740][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 531.410740][ T72] ipv6_find_idev+0x102/0x170 [ 531.410740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.410740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.410740][ T72] netlink_rcv_skb+0x130/0x360 [ 531.410740][ T72] netlink_unicast+0x449/0x710 [ 531.410740][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.410740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.410740][ T72] ___sys_sendmsg+0xee/0x170 [ 531.410740][ T72] __sys_sendmsg+0xcd/0x170 [ 531.410740][ T72] do_syscall_64+0xc6/0x1e0 [ 531.410740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.410740][ T72] [ 531.412429][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 531.412429][ T72] neigh_parms_alloc+0x1e5/0x510 [ 531.412429][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 531.412429][ T72] ipv6_find_idev+0x102/0x170 [ 531.412429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 531.412429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 531.412429][ T72] netlink_rcv_skb+0x130/0x360 [ 531.412429][ T72] netlink_unicast+0x449/0x710 [ 531.412429][ T72] netlink_sendmsg+0x723/0xbe0 [ 531.412429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 531.412429][ T72] ___sys_sendmsg+0xee/0x170 [ 531.412429][ T72] __sys_sendmsg+0xcd/0x170 [ 531.412429][ T72] do_syscall_64+0xc6/0x1e0 [ 531.412429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 531.412429][ T72] [ 541.654843][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 541.655301][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 541.655301][ T72] netdev_get_by_index+0x5e/0x80 [ 541.655301][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.655301][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.655301][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.655301][ T72] ipv6_add_addr+0x411/0x2000 [ 541.655301][ T72] inet6_addr_add+0x30e/0xa40 [ 541.655301][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.655301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.655301][ T72] netlink_rcv_skb+0x130/0x360 [ 541.655301][ T72] netlink_unicast+0x449/0x710 [ 541.655301][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.655301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.655301][ T72] ___sys_sendmsg+0xee/0x170 [ 541.655301][ T72] __sys_sendmsg+0xcd/0x170 [ 541.655301][ T72] do_syscall_64+0xc6/0x1e0 [ 541.655301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.655301][ T72] [ 541.657337][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 541.657337][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.657337][ T72] ipv6_find_idev+0x102/0x170 [ 541.657337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.657337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.657337][ T72] netlink_rcv_skb+0x130/0x360 [ 541.657337][ T72] netlink_unicast+0x449/0x710 [ 541.657337][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.657337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.657337][ T72] ___sys_sendmsg+0xee/0x170 [ 541.657337][ T72] __sys_sendmsg+0xcd/0x170 [ 541.657337][ T72] do_syscall_64+0xc6/0x1e0 [ 541.657337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.657337][ T72] [ 541.658916][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 541.658916][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.658916][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.658916][ T72] ipv6_find_idev+0x102/0x170 [ 541.658916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.658916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.658916][ T72] netlink_rcv_skb+0x130/0x360 [ 541.658916][ T72] netlink_unicast+0x449/0x710 [ 541.658916][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.658916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.658916][ T72] ___sys_sendmsg+0xee/0x170 [ 541.658916][ T72] __sys_sendmsg+0xcd/0x170 [ 541.658916][ T72] do_syscall_64+0xc6/0x1e0 [ 541.658916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.658916][ T72] [ 541.660609][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 541.660896][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 541.660896][ T72] netdev_get_by_index+0x5e/0x80 [ 541.660896][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.660896][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.660896][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.660896][ T72] ipv6_add_addr+0x411/0x2000 [ 541.660896][ T72] inet6_addr_add+0x30e/0xa40 [ 541.660896][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.660896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.660896][ T72] netlink_rcv_skb+0x130/0x360 [ 541.660896][ T72] netlink_unicast+0x449/0x710 [ 541.660896][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.660896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.660896][ T72] ___sys_sendmsg+0xee/0x170 [ 541.660896][ T72] __sys_sendmsg+0xcd/0x170 [ 541.660896][ T72] do_syscall_64+0xc6/0x1e0 [ 541.660896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.660896][ T72] [ 541.662934][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 541.662934][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.662934][ T72] ipv6_find_idev+0x102/0x170 [ 541.662934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.662934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.662934][ T72] netlink_rcv_skb+0x130/0x360 [ 541.662934][ T72] netlink_unicast+0x449/0x710 [ 541.662934][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.662934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.662934][ T72] ___sys_sendmsg+0xee/0x170 [ 541.662934][ T72] __sys_sendmsg+0xcd/0x170 [ 541.662934][ T72] do_syscall_64+0xc6/0x1e0 [ 541.662934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.662934][ T72] [ 541.664516][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 541.664516][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.664516][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.664516][ T72] ipv6_find_idev+0x102/0x170 [ 541.664516][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.664516][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.664516][ T72] netlink_rcv_skb+0x130/0x360 [ 541.664516][ T72] netlink_unicast+0x449/0x710 [ 541.664516][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.664516][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.664516][ T72] ___sys_sendmsg+0xee/0x170 [ 541.664516][ T72] __sys_sendmsg+0xcd/0x170 [ 541.664516][ T72] do_syscall_64+0xc6/0x1e0 [ 541.664516][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.664516][ T72] [ 541.666297][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 541.666604][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 541.666604][ T72] netdev_get_by_index+0x5e/0x80 [ 541.666604][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.666604][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.666604][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.666604][ T72] ipv6_add_addr+0x411/0x2000 [ 541.666604][ T72] inet6_addr_add+0x30e/0xa40 [ 541.666604][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.666604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.666604][ T72] netlink_rcv_skb+0x130/0x360 [ 541.666604][ T72] netlink_unicast+0x449/0x710 [ 541.666604][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.666604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.666604][ T72] ___sys_sendmsg+0xee/0x170 [ 541.666604][ T72] __sys_sendmsg+0xcd/0x170 [ 541.666604][ T72] do_syscall_64+0xc6/0x1e0 [ 541.666604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.666604][ T72] [ 541.668653][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 541.668653][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.668653][ T72] ipv6_find_idev+0x102/0x170 [ 541.668653][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.668653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.668653][ T72] netlink_rcv_skb+0x130/0x360 [ 541.668653][ T72] netlink_unicast+0x449/0x710 [ 541.668653][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.668653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.668653][ T72] ___sys_sendmsg+0xee/0x170 [ 541.668653][ T72] __sys_sendmsg+0xcd/0x170 [ 541.668653][ T72] do_syscall_64+0xc6/0x1e0 [ 541.668653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.668653][ T72] [ 541.670204][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 541.670204][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.670204][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.670204][ T72] ipv6_find_idev+0x102/0x170 [ 541.670204][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.670204][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.670204][ T72] netlink_rcv_skb+0x130/0x360 [ 541.670204][ T72] netlink_unicast+0x449/0x710 [ 541.670204][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.670204][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.670204][ T72] ___sys_sendmsg+0xee/0x170 [ 541.670204][ T72] __sys_sendmsg+0xcd/0x170 [ 541.670204][ T72] do_syscall_64+0xc6/0x1e0 [ 541.670204][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.670204][ T72] [ 541.672002][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 541.672266][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 541.672266][ T72] netdev_get_by_index+0x5e/0x80 [ 541.672266][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.672266][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.672266][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.672266][ T72] ipv6_add_addr+0x411/0x2000 [ 541.672266][ T72] inet6_addr_add+0x30e/0xa40 [ 541.672266][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.672266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.672266][ T72] netlink_rcv_skb+0x130/0x360 [ 541.672266][ T72] netlink_unicast+0x449/0x710 [ 541.672266][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.672266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.672266][ T72] ___sys_sendmsg+0xee/0x170 [ 541.672266][ T72] __sys_sendmsg+0xcd/0x170 [ 541.672266][ T72] do_syscall_64+0xc6/0x1e0 [ 541.672266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.672266][ T72] [ 541.674312][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 541.674312][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.674312][ T72] ipv6_find_idev+0x102/0x170 [ 541.674312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.674312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.674312][ T72] netlink_rcv_skb+0x130/0x360 [ 541.674312][ T72] netlink_unicast+0x449/0x710 [ 541.674312][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.674312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.674312][ T72] ___sys_sendmsg+0xee/0x170 [ 541.674312][ T72] __sys_sendmsg+0xcd/0x170 [ 541.674312][ T72] do_syscall_64+0xc6/0x1e0 [ 541.674312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.674312][ T72] [ 541.675848][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 541.675848][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.675848][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.675848][ T72] ipv6_find_idev+0x102/0x170 [ 541.675848][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.675848][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.675848][ T72] netlink_rcv_skb+0x130/0x360 [ 541.675848][ T72] netlink_unicast+0x449/0x710 [ 541.675848][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.675848][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.675848][ T72] ___sys_sendmsg+0xee/0x170 [ 541.675848][ T72] __sys_sendmsg+0xcd/0x170 [ 541.675848][ T72] do_syscall_64+0xc6/0x1e0 [ 541.675848][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.675848][ T72] [ 541.677931][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 541.678195][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 541.678195][ T72] netdev_get_by_index+0x5e/0x80 [ 541.678195][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.678195][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.678195][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.678195][ T72] ipv6_add_addr+0x411/0x2000 [ 541.678195][ T72] inet6_addr_add+0x30e/0xa40 [ 541.678195][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.678195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.678195][ T72] netlink_rcv_skb+0x130/0x360 [ 541.678195][ T72] netlink_unicast+0x449/0x710 [ 541.678195][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.678195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.678195][ T72] ___sys_sendmsg+0xee/0x170 [ 541.678195][ T72] __sys_sendmsg+0xcd/0x170 [ 541.678195][ T72] do_syscall_64+0xc6/0x1e0 [ 541.678195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.678195][ T72] [ 541.680303][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 541.680303][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.680303][ T72] ipv6_find_idev+0x102/0x170 [ 541.680303][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.680303][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.680303][ T72] netlink_rcv_skb+0x130/0x360 [ 541.680303][ T72] netlink_unicast+0x449/0x710 [ 541.680303][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.680303][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.680303][ T72] ___sys_sendmsg+0xee/0x170 [ 541.680303][ T72] __sys_sendmsg+0xcd/0x170 [ 541.680303][ T72] do_syscall_64+0xc6/0x1e0 [ 541.680303][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.680303][ T72] [ 541.681841][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 541.681841][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.681841][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.681841][ T72] ipv6_find_idev+0x102/0x170 [ 541.681841][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.681841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.681841][ T72] netlink_rcv_skb+0x130/0x360 [ 541.681841][ T72] netlink_unicast+0x449/0x710 [ 541.681841][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.681841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.681841][ T72] ___sys_sendmsg+0xee/0x170 [ 541.681841][ T72] __sys_sendmsg+0xcd/0x170 [ 541.681841][ T72] do_syscall_64+0xc6/0x1e0 [ 541.681841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.681841][ T72] [ 541.683573][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 541.683899][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 541.683899][ T72] netdev_get_by_index+0x5e/0x80 [ 541.683899][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.683899][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.683899][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.683899][ T72] ipv6_add_addr+0x411/0x2000 [ 541.683899][ T72] inet6_addr_add+0x30e/0xa40 [ 541.683899][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.683899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.683899][ T72] netlink_rcv_skb+0x130/0x360 [ 541.683899][ T72] netlink_unicast+0x449/0x710 [ 541.683899][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.683899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.683899][ T72] ___sys_sendmsg+0xee/0x170 [ 541.683899][ T72] __sys_sendmsg+0xcd/0x170 [ 541.683899][ T72] do_syscall_64+0xc6/0x1e0 [ 541.683899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.683899][ T72] [ 541.685935][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 541.685935][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.685935][ T72] ipv6_find_idev+0x102/0x170 [ 541.685935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.685935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.685935][ T72] netlink_rcv_skb+0x130/0x360 [ 541.685935][ T72] netlink_unicast+0x449/0x710 [ 541.685935][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.685935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.685935][ T72] ___sys_sendmsg+0xee/0x170 [ 541.685935][ T72] __sys_sendmsg+0xcd/0x170 [ 541.685935][ T72] do_syscall_64+0xc6/0x1e0 [ 541.685935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.685935][ T72] [ 541.688192][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 541.688192][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.688192][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.688192][ T72] ipv6_find_idev+0x102/0x170 [ 541.688192][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.688192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.688192][ T72] netlink_rcv_skb+0x130/0x360 [ 541.688192][ T72] netlink_unicast+0x449/0x710 [ 541.688192][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.688192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.688192][ T72] ___sys_sendmsg+0xee/0x170 [ 541.688192][ T72] __sys_sendmsg+0xcd/0x170 [ 541.688192][ T72] do_syscall_64+0xc6/0x1e0 [ 541.688192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.688192][ T72] [ 541.690143][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 541.690402][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 541.690402][ T72] netdev_get_by_index+0x5e/0x80 [ 541.690402][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.690402][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.690402][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.690402][ T72] ipv6_add_addr+0x411/0x2000 [ 541.690402][ T72] inet6_addr_add+0x30e/0xa40 [ 541.690402][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.690402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.690402][ T72] netlink_rcv_skb+0x130/0x360 [ 541.690402][ T72] netlink_unicast+0x449/0x710 [ 541.690402][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.690402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.690402][ T72] ___sys_sendmsg+0xee/0x170 [ 541.690402][ T72] __sys_sendmsg+0xcd/0x170 [ 541.690402][ T72] do_syscall_64+0xc6/0x1e0 [ 541.690402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.690402][ T72] [ 541.692546][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 541.692546][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.692546][ T72] ipv6_find_idev+0x102/0x170 [ 541.692546][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.692546][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.692546][ T72] netlink_rcv_skb+0x130/0x360 [ 541.692546][ T72] netlink_unicast+0x449/0x710 [ 541.692546][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.692546][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.692546][ T72] ___sys_sendmsg+0xee/0x170 [ 541.692546][ T72] __sys_sendmsg+0xcd/0x170 [ 541.692546][ T72] do_syscall_64+0xc6/0x1e0 [ 541.692546][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.692546][ T72] [ 541.694244][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 541.694244][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.694244][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.694244][ T72] ipv6_find_idev+0x102/0x170 [ 541.694244][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.694244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.694244][ T72] netlink_rcv_skb+0x130/0x360 [ 541.694244][ T72] netlink_unicast+0x449/0x710 [ 541.694244][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.694244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.694244][ T72] ___sys_sendmsg+0xee/0x170 [ 541.694244][ T72] __sys_sendmsg+0xcd/0x170 [ 541.694244][ T72] do_syscall_64+0xc6/0x1e0 [ 541.694244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.694244][ T72] [ 541.696217][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 541.696496][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 541.696496][ T72] netdev_get_by_index+0x5e/0x80 [ 541.696496][ T72] fib6_nh_init+0x3d8/0x15b0 [ 541.696496][ T72] ip6_route_info_create+0xf18/0x17d0 [ 541.696496][ T72] addrconf_f6i_alloc+0x244/0x410 [ 541.696496][ T72] ipv6_add_addr+0x411/0x2000 [ 541.696496][ T72] inet6_addr_add+0x30e/0xa40 [ 541.696496][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 541.696496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.696496][ T72] netlink_rcv_skb+0x130/0x360 [ 541.696496][ T72] netlink_unicast+0x449/0x710 [ 541.696496][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.696496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.696496][ T72] ___sys_sendmsg+0xee/0x170 [ 541.696496][ T72] __sys_sendmsg+0xcd/0x170 [ 541.696496][ T72] do_syscall_64+0xc6/0x1e0 [ 541.696496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.696496][ T72] [ 541.698823][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 541.698823][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 541.698823][ T72] ipv6_find_idev+0x102/0x170 [ 541.698823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.698823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.698823][ T72] netlink_rcv_skb+0x130/0x360 [ 541.698823][ T72] netlink_unicast+0x449/0x710 [ 541.698823][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.698823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.698823][ T72] ___sys_sendmsg+0xee/0x170 [ 541.698823][ T72] __sys_sendmsg+0xcd/0x170 [ 541.698823][ T72] do_syscall_64+0xc6/0x1e0 [ 541.698823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.698823][ T72] [ 541.700512][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 541.700512][ T72] neigh_parms_alloc+0x1e5/0x510 [ 541.700512][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 541.700512][ T72] ipv6_find_idev+0x102/0x170 [ 541.700512][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 541.700512][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 541.700512][ T72] netlink_rcv_skb+0x130/0x360 [ 541.700512][ T72] netlink_unicast+0x449/0x710 [ 541.700512][ T72] netlink_sendmsg+0x723/0xbe0 [ 541.700512][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 541.700512][ T72] ___sys_sendmsg+0xee/0x170 [ 541.700512][ T72] __sys_sendmsg+0xcd/0x170 [ 541.700512][ T72] do_syscall_64+0xc6/0x1e0 [ 541.700512][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 541.700512][ T72] [ 551.774840][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 551.775298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 551.775298][ T72] netdev_get_by_index+0x5e/0x80 [ 551.775298][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.775298][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.775298][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.775298][ T72] ipv6_add_addr+0x411/0x2000 [ 551.775298][ T72] inet6_addr_add+0x30e/0xa40 [ 551.775298][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.775298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.775298][ T72] netlink_rcv_skb+0x130/0x360 [ 551.775298][ T72] netlink_unicast+0x449/0x710 [ 551.775298][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.775298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.775298][ T72] ___sys_sendmsg+0xee/0x170 [ 551.775298][ T72] __sys_sendmsg+0xcd/0x170 [ 551.775298][ T72] do_syscall_64+0xc6/0x1e0 [ 551.775298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.775298][ T72] [ 551.777275][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 551.777275][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.777275][ T72] ipv6_find_idev+0x102/0x170 [ 551.777275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.777275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.777275][ T72] netlink_rcv_skb+0x130/0x360 [ 551.777275][ T72] netlink_unicast+0x449/0x710 [ 551.777275][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.777275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.777275][ T72] ___sys_sendmsg+0xee/0x170 [ 551.777275][ T72] __sys_sendmsg+0xcd/0x170 [ 551.777275][ T72] do_syscall_64+0xc6/0x1e0 [ 551.777275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.777275][ T72] [ 551.778810][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 551.778810][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.778810][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.778810][ T72] ipv6_find_idev+0x102/0x170 [ 551.778810][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.778810][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.778810][ T72] netlink_rcv_skb+0x130/0x360 [ 551.778810][ T72] netlink_unicast+0x449/0x710 [ 551.778810][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.778810][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.778810][ T72] ___sys_sendmsg+0xee/0x170 [ 551.778810][ T72] __sys_sendmsg+0xcd/0x170 [ 551.778810][ T72] do_syscall_64+0xc6/0x1e0 [ 551.778810][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.778810][ T72] [ 551.780471][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 551.780746][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 551.780746][ T72] netdev_get_by_index+0x5e/0x80 [ 551.780746][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.780746][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.780746][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.780746][ T72] ipv6_add_addr+0x411/0x2000 [ 551.780746][ T72] inet6_addr_add+0x30e/0xa40 [ 551.780746][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.780746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.780746][ T72] netlink_rcv_skb+0x130/0x360 [ 551.780746][ T72] netlink_unicast+0x449/0x710 [ 551.780746][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.780746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.780746][ T72] ___sys_sendmsg+0xee/0x170 [ 551.780746][ T72] __sys_sendmsg+0xcd/0x170 [ 551.780746][ T72] do_syscall_64+0xc6/0x1e0 [ 551.780746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.780746][ T72] [ 551.782725][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 551.782725][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.782725][ T72] ipv6_find_idev+0x102/0x170 [ 551.782725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.782725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.782725][ T72] netlink_rcv_skb+0x130/0x360 [ 551.782725][ T72] netlink_unicast+0x449/0x710 [ 551.782725][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.782725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.782725][ T72] ___sys_sendmsg+0xee/0x170 [ 551.782725][ T72] __sys_sendmsg+0xcd/0x170 [ 551.782725][ T72] do_syscall_64+0xc6/0x1e0 [ 551.782725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.782725][ T72] [ 551.784263][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 551.784263][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.784263][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.784263][ T72] ipv6_find_idev+0x102/0x170 [ 551.784263][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.784263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.784263][ T72] netlink_rcv_skb+0x130/0x360 [ 551.784263][ T72] netlink_unicast+0x449/0x710 [ 551.784263][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.784263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.784263][ T72] ___sys_sendmsg+0xee/0x170 [ 551.784263][ T72] __sys_sendmsg+0xcd/0x170 [ 551.784263][ T72] do_syscall_64+0xc6/0x1e0 [ 551.784263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.784263][ T72] [ 551.785927][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 551.786196][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 551.786196][ T72] netdev_get_by_index+0x5e/0x80 [ 551.786196][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.786196][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.786196][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.786196][ T72] ipv6_add_addr+0x411/0x2000 [ 551.786196][ T72] inet6_addr_add+0x30e/0xa40 [ 551.786196][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.786196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.786196][ T72] netlink_rcv_skb+0x130/0x360 [ 551.786196][ T72] netlink_unicast+0x449/0x710 [ 551.786196][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.786196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.786196][ T72] ___sys_sendmsg+0xee/0x170 [ 551.786196][ T72] __sys_sendmsg+0xcd/0x170 [ 551.786196][ T72] do_syscall_64+0xc6/0x1e0 [ 551.786196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.786196][ T72] [ 551.788164][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 551.788164][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.788164][ T72] ipv6_find_idev+0x102/0x170 [ 551.788164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.788164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.788164][ T72] netlink_rcv_skb+0x130/0x360 [ 551.788164][ T72] netlink_unicast+0x449/0x710 [ 551.788164][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.788164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.788164][ T72] ___sys_sendmsg+0xee/0x170 [ 551.788164][ T72] __sys_sendmsg+0xcd/0x170 [ 551.788164][ T72] do_syscall_64+0xc6/0x1e0 [ 551.788164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.788164][ T72] [ 551.789680][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 551.789680][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.789680][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.789680][ T72] ipv6_find_idev+0x102/0x170 [ 551.789680][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.789680][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.789680][ T72] netlink_rcv_skb+0x130/0x360 [ 551.789680][ T72] netlink_unicast+0x449/0x710 [ 551.789680][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.789680][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.789680][ T72] ___sys_sendmsg+0xee/0x170 [ 551.789680][ T72] __sys_sendmsg+0xcd/0x170 [ 551.789680][ T72] do_syscall_64+0xc6/0x1e0 [ 551.789680][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.789680][ T72] [ 551.791334][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 551.791596][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 551.791596][ T72] netdev_get_by_index+0x5e/0x80 [ 551.791596][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.791596][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.791596][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.791596][ T72] ipv6_add_addr+0x411/0x2000 [ 551.791596][ T72] inet6_addr_add+0x30e/0xa40 [ 551.791596][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.791596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.791596][ T72] netlink_rcv_skb+0x130/0x360 [ 551.791596][ T72] netlink_unicast+0x449/0x710 [ 551.791596][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.791596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.791596][ T72] ___sys_sendmsg+0xee/0x170 [ 551.791596][ T72] __sys_sendmsg+0xcd/0x170 [ 551.791596][ T72] do_syscall_64+0xc6/0x1e0 [ 551.791596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.791596][ T72] [ 551.793564][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 551.793564][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.793564][ T72] ipv6_find_idev+0x102/0x170 [ 551.793564][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.793564][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.793564][ T72] netlink_rcv_skb+0x130/0x360 [ 551.793564][ T72] netlink_unicast+0x449/0x710 [ 551.793564][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.793564][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.793564][ T72] ___sys_sendmsg+0xee/0x170 [ 551.793564][ T72] __sys_sendmsg+0xcd/0x170 [ 551.793564][ T72] do_syscall_64+0xc6/0x1e0 [ 551.793564][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.793564][ T72] [ 551.795091][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 551.795091][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.795091][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.795091][ T72] ipv6_find_idev+0x102/0x170 [ 551.795091][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.795091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.795091][ T72] netlink_rcv_skb+0x130/0x360 [ 551.795091][ T72] netlink_unicast+0x449/0x710 [ 551.795091][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.795091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.795091][ T72] ___sys_sendmsg+0xee/0x170 [ 551.795091][ T72] __sys_sendmsg+0xcd/0x170 [ 551.795091][ T72] do_syscall_64+0xc6/0x1e0 [ 551.795091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.795091][ T72] [ 551.797153][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 551.797413][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 551.797413][ T72] netdev_get_by_index+0x5e/0x80 [ 551.797413][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.797413][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.797413][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.797413][ T72] ipv6_add_addr+0x411/0x2000 [ 551.797413][ T72] inet6_addr_add+0x30e/0xa40 [ 551.797413][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.797413][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.797413][ T72] netlink_rcv_skb+0x130/0x360 [ 551.797413][ T72] netlink_unicast+0x449/0x710 [ 551.797413][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.797413][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.797413][ T72] ___sys_sendmsg+0xee/0x170 [ 551.797413][ T72] __sys_sendmsg+0xcd/0x170 [ 551.797413][ T72] do_syscall_64+0xc6/0x1e0 [ 551.797413][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.797413][ T72] [ 551.799370][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 551.799370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.799370][ T72] ipv6_find_idev+0x102/0x170 [ 551.799370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.799370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.799370][ T72] netlink_rcv_skb+0x130/0x360 [ 551.799370][ T72] netlink_unicast+0x449/0x710 [ 551.799370][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.799370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.799370][ T72] ___sys_sendmsg+0xee/0x170 [ 551.799370][ T72] __sys_sendmsg+0xcd/0x170 [ 551.799370][ T72] do_syscall_64+0xc6/0x1e0 [ 551.799370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.799370][ T72] [ 551.800874][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 551.800874][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.800874][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.800874][ T72] ipv6_find_idev+0x102/0x170 [ 551.800874][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.800874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.800874][ T72] netlink_rcv_skb+0x130/0x360 [ 551.800874][ T72] netlink_unicast+0x449/0x710 [ 551.800874][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.800874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.800874][ T72] ___sys_sendmsg+0xee/0x170 [ 551.800874][ T72] __sys_sendmsg+0xcd/0x170 [ 551.800874][ T72] do_syscall_64+0xc6/0x1e0 [ 551.800874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.800874][ T72] [ 551.802566][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 551.802879][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 551.802879][ T72] netdev_get_by_index+0x5e/0x80 [ 551.802879][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.802879][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.802879][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.802879][ T72] ipv6_add_addr+0x411/0x2000 [ 551.802879][ T72] inet6_addr_add+0x30e/0xa40 [ 551.802879][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.802879][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.802879][ T72] netlink_rcv_skb+0x130/0x360 [ 551.802879][ T72] netlink_unicast+0x449/0x710 [ 551.802879][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.802879][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.802879][ T72] ___sys_sendmsg+0xee/0x170 [ 551.802879][ T72] __sys_sendmsg+0xcd/0x170 [ 551.802879][ T72] do_syscall_64+0xc6/0x1e0 [ 551.802879][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.802879][ T72] [ 551.804905][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 551.804905][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.804905][ T72] ipv6_find_idev+0x102/0x170 [ 551.804905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.804905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.804905][ T72] netlink_rcv_skb+0x130/0x360 [ 551.804905][ T72] netlink_unicast+0x449/0x710 [ 551.804905][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.804905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.804905][ T72] ___sys_sendmsg+0xee/0x170 [ 551.804905][ T72] __sys_sendmsg+0xcd/0x170 [ 551.804905][ T72] do_syscall_64+0xc6/0x1e0 [ 551.804905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.804905][ T72] [ 551.806611][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 551.806611][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.806611][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.806611][ T72] ipv6_find_idev+0x102/0x170 [ 551.806611][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.806611][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.806611][ T72] netlink_rcv_skb+0x130/0x360 [ 551.806611][ T72] netlink_unicast+0x449/0x710 [ 551.806611][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.806611][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.806611][ T72] ___sys_sendmsg+0xee/0x170 [ 551.806611][ T72] __sys_sendmsg+0xcd/0x170 [ 551.806611][ T72] do_syscall_64+0xc6/0x1e0 [ 551.806611][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.806611][ T72] [ 551.808603][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 551.808921][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 551.808921][ T72] netdev_get_by_index+0x5e/0x80 [ 551.808921][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.808921][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.808921][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.808921][ T72] ipv6_add_addr+0x411/0x2000 [ 551.808921][ T72] inet6_addr_add+0x30e/0xa40 [ 551.808921][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.808921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.808921][ T72] netlink_rcv_skb+0x130/0x360 [ 551.808921][ T72] netlink_unicast+0x449/0x710 [ 551.808921][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.808921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.808921][ T72] ___sys_sendmsg+0xee/0x170 [ 551.808921][ T72] __sys_sendmsg+0xcd/0x170 [ 551.808921][ T72] do_syscall_64+0xc6/0x1e0 [ 551.808921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.808921][ T72] [ 551.811065][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 551.811065][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.811065][ T72] ipv6_find_idev+0x102/0x170 [ 551.811065][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.811065][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.811065][ T72] netlink_rcv_skb+0x130/0x360 [ 551.811065][ T72] netlink_unicast+0x449/0x710 [ 551.811065][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.811065][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.811065][ T72] ___sys_sendmsg+0xee/0x170 [ 551.811065][ T72] __sys_sendmsg+0xcd/0x170 [ 551.811065][ T72] do_syscall_64+0xc6/0x1e0 [ 551.811065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.811065][ T72] [ 551.812760][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 551.812760][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.812760][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.812760][ T72] ipv6_find_idev+0x102/0x170 [ 551.812760][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.812760][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.812760][ T72] netlink_rcv_skb+0x130/0x360 [ 551.812760][ T72] netlink_unicast+0x449/0x710 [ 551.812760][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.812760][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.812760][ T72] ___sys_sendmsg+0xee/0x170 [ 551.812760][ T72] __sys_sendmsg+0xcd/0x170 [ 551.812760][ T72] do_syscall_64+0xc6/0x1e0 [ 551.812760][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.812760][ T72] [ 551.814625][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 551.814941][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 551.814941][ T72] netdev_get_by_index+0x5e/0x80 [ 551.814941][ T72] fib6_nh_init+0x3d8/0x15b0 [ 551.814941][ T72] ip6_route_info_create+0xf18/0x17d0 [ 551.814941][ T72] addrconf_f6i_alloc+0x244/0x410 [ 551.814941][ T72] ipv6_add_addr+0x411/0x2000 [ 551.814941][ T72] inet6_addr_add+0x30e/0xa40 [ 551.814941][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 551.814941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.814941][ T72] netlink_rcv_skb+0x130/0x360 [ 551.814941][ T72] netlink_unicast+0x449/0x710 [ 551.814941][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.814941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.814941][ T72] ___sys_sendmsg+0xee/0x170 [ 551.814941][ T72] __sys_sendmsg+0xcd/0x170 [ 551.814941][ T72] do_syscall_64+0xc6/0x1e0 [ 551.814941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.814941][ T72] [ 551.817081][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 551.817081][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 551.817081][ T72] ipv6_find_idev+0x102/0x170 [ 551.817081][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.817081][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.817081][ T72] netlink_rcv_skb+0x130/0x360 [ 551.817081][ T72] netlink_unicast+0x449/0x710 [ 551.817081][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.817081][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.817081][ T72] ___sys_sendmsg+0xee/0x170 [ 551.817081][ T72] __sys_sendmsg+0xcd/0x170 [ 551.817081][ T72] do_syscall_64+0xc6/0x1e0 [ 551.817081][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.817081][ T72] [ 551.818850][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 551.818850][ T72] neigh_parms_alloc+0x1e5/0x510 [ 551.818850][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 551.818850][ T72] ipv6_find_idev+0x102/0x170 [ 551.818850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 551.818850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 551.818850][ T72] netlink_rcv_skb+0x130/0x360 [ 551.818850][ T72] netlink_unicast+0x449/0x710 [ 551.818850][ T72] netlink_sendmsg+0x723/0xbe0 [ 551.818850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 551.818850][ T72] ___sys_sendmsg+0xee/0x170 [ 551.818850][ T72] __sys_sendmsg+0xcd/0x170 [ 551.818850][ T72] do_syscall_64+0xc6/0x1e0 [ 551.818850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 551.818850][ T72] [ 562.334940][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 562.335353][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 562.335353][ T72] netdev_get_by_index+0x5e/0x80 [ 562.335353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.335353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.335353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.335353][ T72] ipv6_add_addr+0x411/0x2000 [ 562.335353][ T72] inet6_addr_add+0x30e/0xa40 [ 562.335353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.335353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.335353][ T72] netlink_rcv_skb+0x130/0x360 [ 562.335353][ T72] netlink_unicast+0x449/0x710 [ 562.335353][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.335353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.335353][ T72] ___sys_sendmsg+0xee/0x170 [ 562.335353][ T72] __sys_sendmsg+0xcd/0x170 [ 562.335353][ T72] do_syscall_64+0xc6/0x1e0 [ 562.335353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.335353][ T72] [ 562.337556][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 562.337556][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.337556][ T72] ipv6_find_idev+0x102/0x170 [ 562.337556][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.337556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.337556][ T72] netlink_rcv_skb+0x130/0x360 [ 562.337556][ T72] netlink_unicast+0x449/0x710 [ 562.337556][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.337556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.337556][ T72] ___sys_sendmsg+0xee/0x170 [ 562.337556][ T72] __sys_sendmsg+0xcd/0x170 [ 562.337556][ T72] do_syscall_64+0xc6/0x1e0 [ 562.337556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.337556][ T72] [ 562.339243][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 562.339243][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.339243][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.339243][ T72] ipv6_find_idev+0x102/0x170 [ 562.339243][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.339243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.339243][ T72] netlink_rcv_skb+0x130/0x360 [ 562.339243][ T72] netlink_unicast+0x449/0x710 [ 562.339243][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.339243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.339243][ T72] ___sys_sendmsg+0xee/0x170 [ 562.339243][ T72] __sys_sendmsg+0xcd/0x170 [ 562.339243][ T72] do_syscall_64+0xc6/0x1e0 [ 562.339243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.339243][ T72] [ 562.340924][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 562.341193][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 562.341193][ T72] netdev_get_by_index+0x5e/0x80 [ 562.341193][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.341193][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.341193][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.341193][ T72] ipv6_add_addr+0x411/0x2000 [ 562.341193][ T72] inet6_addr_add+0x30e/0xa40 [ 562.341193][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.341193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.341193][ T72] netlink_rcv_skb+0x130/0x360 [ 562.341193][ T72] netlink_unicast+0x449/0x710 [ 562.341193][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.341193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.341193][ T72] ___sys_sendmsg+0xee/0x170 [ 562.341193][ T72] __sys_sendmsg+0xcd/0x170 [ 562.341193][ T72] do_syscall_64+0xc6/0x1e0 [ 562.341193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.341193][ T72] [ 562.343158][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 562.343158][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.343158][ T72] ipv6_find_idev+0x102/0x170 [ 562.343158][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.343158][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.343158][ T72] netlink_rcv_skb+0x130/0x360 [ 562.343158][ T72] netlink_unicast+0x449/0x710 [ 562.343158][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.343158][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.343158][ T72] ___sys_sendmsg+0xee/0x170 [ 562.343158][ T72] __sys_sendmsg+0xcd/0x170 [ 562.343158][ T72] do_syscall_64+0xc6/0x1e0 [ 562.343158][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.343158][ T72] [ 562.344675][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 562.344675][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.344675][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.344675][ T72] ipv6_find_idev+0x102/0x170 [ 562.344675][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.344675][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.344675][ T72] netlink_rcv_skb+0x130/0x360 [ 562.344675][ T72] netlink_unicast+0x449/0x710 [ 562.344675][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.344675][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.344675][ T72] ___sys_sendmsg+0xee/0x170 [ 562.344675][ T72] __sys_sendmsg+0xcd/0x170 [ 562.344675][ T72] do_syscall_64+0xc6/0x1e0 [ 562.344675][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.344675][ T72] [ 562.346327][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 562.346591][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 562.346591][ T72] netdev_get_by_index+0x5e/0x80 [ 562.346591][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.346591][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.346591][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.346591][ T72] ipv6_add_addr+0x411/0x2000 [ 562.346591][ T72] inet6_addr_add+0x30e/0xa40 [ 562.346591][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.346591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.346591][ T72] netlink_rcv_skb+0x130/0x360 [ 562.346591][ T72] netlink_unicast+0x449/0x710 [ 562.346591][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.346591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.346591][ T72] ___sys_sendmsg+0xee/0x170 [ 562.346591][ T72] __sys_sendmsg+0xcd/0x170 [ 562.346591][ T72] do_syscall_64+0xc6/0x1e0 [ 562.346591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.346591][ T72] [ 562.348584][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 562.348584][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.348584][ T72] ipv6_find_idev+0x102/0x170 [ 562.348584][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.348584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.348584][ T72] netlink_rcv_skb+0x130/0x360 [ 562.348584][ T72] netlink_unicast+0x449/0x710 [ 562.348584][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.348584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.348584][ T72] ___sys_sendmsg+0xee/0x170 [ 562.348584][ T72] __sys_sendmsg+0xcd/0x170 [ 562.348584][ T72] do_syscall_64+0xc6/0x1e0 [ 562.348584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.348584][ T72] [ 562.350094][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 562.350094][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.350094][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.350094][ T72] ipv6_find_idev+0x102/0x170 [ 562.350094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.350094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.350094][ T72] netlink_rcv_skb+0x130/0x360 [ 562.350094][ T72] netlink_unicast+0x449/0x710 [ 562.350094][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.350094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.350094][ T72] ___sys_sendmsg+0xee/0x170 [ 562.350094][ T72] __sys_sendmsg+0xcd/0x170 [ 562.350094][ T72] do_syscall_64+0xc6/0x1e0 [ 562.350094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.350094][ T72] [ 562.351763][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 562.352025][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 562.352025][ T72] netdev_get_by_index+0x5e/0x80 [ 562.352025][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.352025][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.352025][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.352025][ T72] ipv6_add_addr+0x411/0x2000 [ 562.352025][ T72] inet6_addr_add+0x30e/0xa40 [ 562.352025][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.352025][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.352025][ T72] netlink_rcv_skb+0x130/0x360 [ 562.352025][ T72] netlink_unicast+0x449/0x710 [ 562.352025][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.352025][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.352025][ T72] ___sys_sendmsg+0xee/0x170 [ 562.352025][ T72] __sys_sendmsg+0xcd/0x170 [ 562.352025][ T72] do_syscall_64+0xc6/0x1e0 [ 562.352025][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.352025][ T72] [ 562.353981][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 562.353981][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.353981][ T72] ipv6_find_idev+0x102/0x170 [ 562.353981][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.353981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.353981][ T72] netlink_rcv_skb+0x130/0x360 [ 562.353981][ T72] netlink_unicast+0x449/0x710 [ 562.353981][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.353981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.353981][ T72] ___sys_sendmsg+0xee/0x170 [ 562.353981][ T72] __sys_sendmsg+0xcd/0x170 [ 562.353981][ T72] do_syscall_64+0xc6/0x1e0 [ 562.353981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.353981][ T72] [ 562.355494][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 562.355494][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.355494][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.355494][ T72] ipv6_find_idev+0x102/0x170 [ 562.355494][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.355494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.355494][ T72] netlink_rcv_skb+0x130/0x360 [ 562.355494][ T72] netlink_unicast+0x449/0x710 [ 562.355494][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.355494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.355494][ T72] ___sys_sendmsg+0xee/0x170 [ 562.355494][ T72] __sys_sendmsg+0xcd/0x170 [ 562.355494][ T72] do_syscall_64+0xc6/0x1e0 [ 562.355494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.355494][ T72] [ 562.357145][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 562.357408][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 562.357408][ T72] netdev_get_by_index+0x5e/0x80 [ 562.357408][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.357408][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.357408][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.357408][ T72] ipv6_add_addr+0x411/0x2000 [ 562.357408][ T72] inet6_addr_add+0x30e/0xa40 [ 562.357408][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.357408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.357408][ T72] netlink_rcv_skb+0x130/0x360 [ 562.357408][ T72] netlink_unicast+0x449/0x710 [ 562.357408][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.357408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.357408][ T72] ___sys_sendmsg+0xee/0x170 [ 562.357408][ T72] __sys_sendmsg+0xcd/0x170 [ 562.357408][ T72] do_syscall_64+0xc6/0x1e0 [ 562.357408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.357408][ T72] [ 562.359377][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 562.359377][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.359377][ T72] ipv6_find_idev+0x102/0x170 [ 562.359377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.359377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.359377][ T72] netlink_rcv_skb+0x130/0x360 [ 562.359377][ T72] netlink_unicast+0x449/0x710 [ 562.359377][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.359377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.359377][ T72] ___sys_sendmsg+0xee/0x170 [ 562.359377][ T72] __sys_sendmsg+0xcd/0x170 [ 562.359377][ T72] do_syscall_64+0xc6/0x1e0 [ 562.359377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.359377][ T72] [ 562.360952][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 562.360952][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.360952][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.360952][ T72] ipv6_find_idev+0x102/0x170 [ 562.360952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.360952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.360952][ T72] netlink_rcv_skb+0x130/0x360 [ 562.360952][ T72] netlink_unicast+0x449/0x710 [ 562.360952][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.360952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.360952][ T72] ___sys_sendmsg+0xee/0x170 [ 562.360952][ T72] __sys_sendmsg+0xcd/0x170 [ 562.360952][ T72] do_syscall_64+0xc6/0x1e0 [ 562.360952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.360952][ T72] [ 562.362957][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 562.363247][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 562.363247][ T72] netdev_get_by_index+0x5e/0x80 [ 562.363247][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.363247][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.363247][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.363247][ T72] ipv6_add_addr+0x411/0x2000 [ 562.363247][ T72] inet6_addr_add+0x30e/0xa40 [ 562.363247][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.363247][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.363247][ T72] netlink_rcv_skb+0x130/0x360 [ 562.363247][ T72] netlink_unicast+0x449/0x710 [ 562.363247][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.363247][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.363247][ T72] ___sys_sendmsg+0xee/0x170 [ 562.363247][ T72] __sys_sendmsg+0xcd/0x170 [ 562.363247][ T72] do_syscall_64+0xc6/0x1e0 [ 562.363247][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.363247][ T72] [ 562.365595][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 562.365595][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.365595][ T72] ipv6_find_idev+0x102/0x170 [ 562.365595][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.365595][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.365595][ T72] netlink_rcv_skb+0x130/0x360 [ 562.365595][ T72] netlink_unicast+0x449/0x710 [ 562.365595][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.365595][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.365595][ T72] ___sys_sendmsg+0xee/0x170 [ 562.365595][ T72] __sys_sendmsg+0xcd/0x170 [ 562.365595][ T72] do_syscall_64+0xc6/0x1e0 [ 562.365595][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.365595][ T72] [ 562.367441][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 562.367441][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.367441][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.367441][ T72] ipv6_find_idev+0x102/0x170 [ 562.367441][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.367441][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.367441][ T72] netlink_rcv_skb+0x130/0x360 [ 562.367441][ T72] netlink_unicast+0x449/0x710 [ 562.367441][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.367441][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.367441][ T72] ___sys_sendmsg+0xee/0x170 [ 562.367441][ T72] __sys_sendmsg+0xcd/0x170 [ 562.367441][ T72] do_syscall_64+0xc6/0x1e0 [ 562.367441][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.367441][ T72] [ 562.369545][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 562.369875][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 562.369875][ T72] netdev_get_by_index+0x5e/0x80 [ 562.369875][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.369875][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.369875][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.369875][ T72] ipv6_add_addr+0x411/0x2000 [ 562.369875][ T72] inet6_addr_add+0x30e/0xa40 [ 562.369875][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.369875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.369875][ T72] netlink_rcv_skb+0x130/0x360 [ 562.369875][ T72] netlink_unicast+0x449/0x710 [ 562.369875][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.369875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.369875][ T72] ___sys_sendmsg+0xee/0x170 [ 562.369875][ T72] __sys_sendmsg+0xcd/0x170 [ 562.369875][ T72] do_syscall_64+0xc6/0x1e0 [ 562.369875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.369875][ T72] [ 562.372263][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 562.372263][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.372263][ T72] ipv6_find_idev+0x102/0x170 [ 562.372263][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.372263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.372263][ T72] netlink_rcv_skb+0x130/0x360 [ 562.372263][ T72] netlink_unicast+0x449/0x710 [ 562.372263][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.372263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.372263][ T72] ___sys_sendmsg+0xee/0x170 [ 562.372263][ T72] __sys_sendmsg+0xcd/0x170 [ 562.372263][ T72] do_syscall_64+0xc6/0x1e0 [ 562.372263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.372263][ T72] [ 562.374176][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 562.374176][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.374176][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.374176][ T72] ipv6_find_idev+0x102/0x170 [ 562.374176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.374176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.374176][ T72] netlink_rcv_skb+0x130/0x360 [ 562.374176][ T72] netlink_unicast+0x449/0x710 [ 562.374176][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.374176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.374176][ T72] ___sys_sendmsg+0xee/0x170 [ 562.374176][ T72] __sys_sendmsg+0xcd/0x170 [ 562.374176][ T72] do_syscall_64+0xc6/0x1e0 [ 562.374176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.374176][ T72] [ 562.376258][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 562.376594][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 562.376594][ T72] netdev_get_by_index+0x5e/0x80 [ 562.376594][ T72] fib6_nh_init+0x3d8/0x15b0 [ 562.376594][ T72] ip6_route_info_create+0xf18/0x17d0 [ 562.376594][ T72] addrconf_f6i_alloc+0x244/0x410 [ 562.376594][ T72] ipv6_add_addr+0x411/0x2000 [ 562.376594][ T72] inet6_addr_add+0x30e/0xa40 [ 562.376594][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 562.376594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.376594][ T72] netlink_rcv_skb+0x130/0x360 [ 562.376594][ T72] netlink_unicast+0x449/0x710 [ 562.376594][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.376594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.376594][ T72] ___sys_sendmsg+0xee/0x170 [ 562.376594][ T72] __sys_sendmsg+0xcd/0x170 [ 562.376594][ T72] do_syscall_64+0xc6/0x1e0 [ 562.376594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.376594][ T72] [ 562.378959][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 562.378959][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 562.378959][ T72] ipv6_find_idev+0x102/0x170 [ 562.378959][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.378959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.378959][ T72] netlink_rcv_skb+0x130/0x360 [ 562.378959][ T72] netlink_unicast+0x449/0x710 [ 562.378959][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.378959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.378959][ T72] ___sys_sendmsg+0xee/0x170 [ 562.378959][ T72] __sys_sendmsg+0xcd/0x170 [ 562.378959][ T72] do_syscall_64+0xc6/0x1e0 [ 562.378959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.378959][ T72] [ 562.380836][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 562.380836][ T72] neigh_parms_alloc+0x1e5/0x510 [ 562.380836][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 562.380836][ T72] ipv6_find_idev+0x102/0x170 [ 562.380836][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 562.380836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 562.380836][ T72] netlink_rcv_skb+0x130/0x360 [ 562.380836][ T72] netlink_unicast+0x449/0x710 [ 562.380836][ T72] netlink_sendmsg+0x723/0xbe0 [ 562.380836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 562.380836][ T72] ___sys_sendmsg+0xee/0x170 [ 562.380836][ T72] __sys_sendmsg+0xcd/0x170 [ 562.380836][ T72] do_syscall_64+0xc6/0x1e0 [ 562.380836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 562.380836][ T72] [ 572.638829][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 572.639283][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 572.639283][ T72] netdev_get_by_index+0x5e/0x80 [ 572.639283][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.639283][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.639283][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.639283][ T72] ipv6_add_addr+0x411/0x2000 [ 572.639283][ T72] inet6_addr_add+0x30e/0xa40 [ 572.639283][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.639283][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.639283][ T72] netlink_rcv_skb+0x130/0x360 [ 572.639283][ T72] netlink_unicast+0x449/0x710 [ 572.639283][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.639283][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.639283][ T72] ___sys_sendmsg+0xee/0x170 [ 572.639283][ T72] __sys_sendmsg+0xcd/0x170 [ 572.639283][ T72] do_syscall_64+0xc6/0x1e0 [ 572.639283][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.639283][ T72] [ 572.641497][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 572.641497][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.641497][ T72] ipv6_find_idev+0x102/0x170 [ 572.641497][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.641497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.641497][ T72] netlink_rcv_skb+0x130/0x360 [ 572.641497][ T72] netlink_unicast+0x449/0x710 [ 572.641497][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.641497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.641497][ T72] ___sys_sendmsg+0xee/0x170 [ 572.641497][ T72] __sys_sendmsg+0xcd/0x170 [ 572.641497][ T72] do_syscall_64+0xc6/0x1e0 [ 572.641497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.641497][ T72] [ 572.643163][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 572.643163][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.643163][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.643163][ T72] ipv6_find_idev+0x102/0x170 [ 572.643163][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.643163][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.643163][ T72] netlink_rcv_skb+0x130/0x360 [ 572.643163][ T72] netlink_unicast+0x449/0x710 [ 572.643163][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.643163][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.643163][ T72] ___sys_sendmsg+0xee/0x170 [ 572.643163][ T72] __sys_sendmsg+0xcd/0x170 [ 572.643163][ T72] do_syscall_64+0xc6/0x1e0 [ 572.643163][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.643163][ T72] [ 572.644945][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 572.645225][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 572.645225][ T72] netdev_get_by_index+0x5e/0x80 [ 572.645225][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.645225][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.645225][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.645225][ T72] ipv6_add_addr+0x411/0x2000 [ 572.645225][ T72] inet6_addr_add+0x30e/0xa40 [ 572.645225][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.645225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.645225][ T72] netlink_rcv_skb+0x130/0x360 [ 572.645225][ T72] netlink_unicast+0x449/0x710 [ 572.645225][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.645225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.645225][ T72] ___sys_sendmsg+0xee/0x170 [ 572.645225][ T72] __sys_sendmsg+0xcd/0x170 [ 572.645225][ T72] do_syscall_64+0xc6/0x1e0 [ 572.645225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.645225][ T72] [ 572.647229][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 572.647229][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.647229][ T72] ipv6_find_idev+0x102/0x170 [ 572.647229][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.647229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.647229][ T72] netlink_rcv_skb+0x130/0x360 [ 572.647229][ T72] netlink_unicast+0x449/0x710 [ 572.647229][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.647229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.647229][ T72] ___sys_sendmsg+0xee/0x170 [ 572.647229][ T72] __sys_sendmsg+0xcd/0x170 [ 572.647229][ T72] do_syscall_64+0xc6/0x1e0 [ 572.647229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.647229][ T72] [ 572.648808][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 572.648808][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.648808][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.648808][ T72] ipv6_find_idev+0x102/0x170 [ 572.648808][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.648808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.648808][ T72] netlink_rcv_skb+0x130/0x360 [ 572.648808][ T72] netlink_unicast+0x449/0x710 [ 572.648808][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.648808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.648808][ T72] ___sys_sendmsg+0xee/0x170 [ 572.648808][ T72] __sys_sendmsg+0xcd/0x170 [ 572.648808][ T72] do_syscall_64+0xc6/0x1e0 [ 572.648808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.648808][ T72] [ 572.650565][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 572.650857][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 572.650857][ T72] netdev_get_by_index+0x5e/0x80 [ 572.650857][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.650857][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.650857][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.650857][ T72] ipv6_add_addr+0x411/0x2000 [ 572.650857][ T72] inet6_addr_add+0x30e/0xa40 [ 572.650857][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.650857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.650857][ T72] netlink_rcv_skb+0x130/0x360 [ 572.650857][ T72] netlink_unicast+0x449/0x710 [ 572.650857][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.650857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.650857][ T72] ___sys_sendmsg+0xee/0x170 [ 572.650857][ T72] __sys_sendmsg+0xcd/0x170 [ 572.650857][ T72] do_syscall_64+0xc6/0x1e0 [ 572.650857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.650857][ T72] [ 572.652859][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 572.652859][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.652859][ T72] ipv6_find_idev+0x102/0x170 [ 572.652859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.652859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.652859][ T72] netlink_rcv_skb+0x130/0x360 [ 572.652859][ T72] netlink_unicast+0x449/0x710 [ 572.652859][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.652859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.652859][ T72] ___sys_sendmsg+0xee/0x170 [ 572.652859][ T72] __sys_sendmsg+0xcd/0x170 [ 572.652859][ T72] do_syscall_64+0xc6/0x1e0 [ 572.652859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.652859][ T72] [ 572.654480][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 572.654480][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.654480][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.654480][ T72] ipv6_find_idev+0x102/0x170 [ 572.654480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.654480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.654480][ T72] netlink_rcv_skb+0x130/0x360 [ 572.654480][ T72] netlink_unicast+0x449/0x710 [ 572.654480][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.654480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.654480][ T72] ___sys_sendmsg+0xee/0x170 [ 572.654480][ T72] __sys_sendmsg+0xcd/0x170 [ 572.654480][ T72] do_syscall_64+0xc6/0x1e0 [ 572.654480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.654480][ T72] [ 572.656343][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 572.656634][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 572.656634][ T72] netdev_get_by_index+0x5e/0x80 [ 572.656634][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.656634][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.656634][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.656634][ T72] ipv6_add_addr+0x411/0x2000 [ 572.656634][ T72] inet6_addr_add+0x30e/0xa40 [ 572.656634][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.656634][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.656634][ T72] netlink_rcv_skb+0x130/0x360 [ 572.656634][ T72] netlink_unicast+0x449/0x710 [ 572.656634][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.656634][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.656634][ T72] ___sys_sendmsg+0xee/0x170 [ 572.656634][ T72] __sys_sendmsg+0xcd/0x170 [ 572.656634][ T72] do_syscall_64+0xc6/0x1e0 [ 572.656634][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.656634][ T72] [ 572.658706][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 572.658706][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.658706][ T72] ipv6_find_idev+0x102/0x170 [ 572.658706][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.658706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.658706][ T72] netlink_rcv_skb+0x130/0x360 [ 572.658706][ T72] netlink_unicast+0x449/0x710 [ 572.658706][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.658706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.658706][ T72] ___sys_sendmsg+0xee/0x170 [ 572.658706][ T72] __sys_sendmsg+0xcd/0x170 [ 572.658706][ T72] do_syscall_64+0xc6/0x1e0 [ 572.658706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.658706][ T72] [ 572.660257][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 572.660257][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.660257][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.660257][ T72] ipv6_find_idev+0x102/0x170 [ 572.660257][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.660257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.660257][ T72] netlink_rcv_skb+0x130/0x360 [ 572.660257][ T72] netlink_unicast+0x449/0x710 [ 572.660257][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.660257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.660257][ T72] ___sys_sendmsg+0xee/0x170 [ 572.660257][ T72] __sys_sendmsg+0xcd/0x170 [ 572.660257][ T72] do_syscall_64+0xc6/0x1e0 [ 572.660257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.660257][ T72] [ 572.662366][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 572.662980][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 572.662980][ T72] netdev_get_by_index+0x5e/0x80 [ 572.662980][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.662980][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.662980][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.662980][ T72] ipv6_add_addr+0x411/0x2000 [ 572.662980][ T72] inet6_addr_add+0x30e/0xa40 [ 572.662980][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.662980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.662980][ T72] netlink_rcv_skb+0x130/0x360 [ 572.662980][ T72] netlink_unicast+0x449/0x710 [ 572.662980][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.662980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.662980][ T72] ___sys_sendmsg+0xee/0x170 [ 572.662980][ T72] __sys_sendmsg+0xcd/0x170 [ 572.662980][ T72] do_syscall_64+0xc6/0x1e0 [ 572.662980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.662980][ T72] [ 572.665036][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 572.665036][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.665036][ T72] ipv6_find_idev+0x102/0x170 [ 572.665036][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.665036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.665036][ T72] netlink_rcv_skb+0x130/0x360 [ 572.665036][ T72] netlink_unicast+0x449/0x710 [ 572.665036][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.665036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.665036][ T72] ___sys_sendmsg+0xee/0x170 [ 572.665036][ T72] __sys_sendmsg+0xcd/0x170 [ 572.665036][ T72] do_syscall_64+0xc6/0x1e0 [ 572.665036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.665036][ T72] [ 572.666578][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 572.666578][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.666578][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.666578][ T72] ipv6_find_idev+0x102/0x170 [ 572.666578][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.666578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.666578][ T72] netlink_rcv_skb+0x130/0x360 [ 572.666578][ T72] netlink_unicast+0x449/0x710 [ 572.666578][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.666578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.666578][ T72] ___sys_sendmsg+0xee/0x170 [ 572.666578][ T72] __sys_sendmsg+0xcd/0x170 [ 572.666578][ T72] do_syscall_64+0xc6/0x1e0 [ 572.666578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.666578][ T72] [ 572.668276][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 572.668546][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 572.668546][ T72] netdev_get_by_index+0x5e/0x80 [ 572.668546][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.668546][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.668546][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.668546][ T72] ipv6_add_addr+0x411/0x2000 [ 572.668546][ T72] inet6_addr_add+0x30e/0xa40 [ 572.668546][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.668546][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.668546][ T72] netlink_rcv_skb+0x130/0x360 [ 572.668546][ T72] netlink_unicast+0x449/0x710 [ 572.668546][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.668546][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.668546][ T72] ___sys_sendmsg+0xee/0x170 [ 572.668546][ T72] __sys_sendmsg+0xcd/0x170 [ 572.668546][ T72] do_syscall_64+0xc6/0x1e0 [ 572.668546][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.668546][ T72] [ 572.670560][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 572.670560][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.670560][ T72] ipv6_find_idev+0x102/0x170 [ 572.670560][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.670560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.670560][ T72] netlink_rcv_skb+0x130/0x360 [ 572.670560][ T72] netlink_unicast+0x449/0x710 [ 572.670560][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.670560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.670560][ T72] ___sys_sendmsg+0xee/0x170 [ 572.670560][ T72] __sys_sendmsg+0xcd/0x170 [ 572.670560][ T72] do_syscall_64+0xc6/0x1e0 [ 572.670560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.670560][ T72] [ 572.672114][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 572.672114][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.672114][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.672114][ T72] ipv6_find_idev+0x102/0x170 [ 572.672114][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.672114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.672114][ T72] netlink_rcv_skb+0x130/0x360 [ 572.672114][ T72] netlink_unicast+0x449/0x710 [ 572.672114][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.672114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.672114][ T72] ___sys_sendmsg+0xee/0x170 [ 572.672114][ T72] __sys_sendmsg+0xcd/0x170 [ 572.672114][ T72] do_syscall_64+0xc6/0x1e0 [ 572.672114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.672114][ T72] [ 572.674152][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 572.674489][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 572.674489][ T72] netdev_get_by_index+0x5e/0x80 [ 572.674489][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.674489][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.674489][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.674489][ T72] ipv6_add_addr+0x411/0x2000 [ 572.674489][ T72] inet6_addr_add+0x30e/0xa40 [ 572.674489][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.674489][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.674489][ T72] netlink_rcv_skb+0x130/0x360 [ 572.674489][ T72] netlink_unicast+0x449/0x710 [ 572.674489][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.674489][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.674489][ T72] ___sys_sendmsg+0xee/0x170 [ 572.674489][ T72] __sys_sendmsg+0xcd/0x170 [ 572.674489][ T72] do_syscall_64+0xc6/0x1e0 [ 572.674489][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.674489][ T72] [ 572.676680][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 572.676680][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.676680][ T72] ipv6_find_idev+0x102/0x170 [ 572.676680][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.676680][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.676680][ T72] netlink_rcv_skb+0x130/0x360 [ 572.676680][ T72] netlink_unicast+0x449/0x710 [ 572.676680][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.676680][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.676680][ T72] ___sys_sendmsg+0xee/0x170 [ 572.676680][ T72] __sys_sendmsg+0xcd/0x170 [ 572.676680][ T72] do_syscall_64+0xc6/0x1e0 [ 572.676680][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.676680][ T72] [ 572.678421][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 572.678421][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.678421][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.678421][ T72] ipv6_find_idev+0x102/0x170 [ 572.678421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.678421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.678421][ T72] netlink_rcv_skb+0x130/0x360 [ 572.678421][ T72] netlink_unicast+0x449/0x710 [ 572.678421][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.678421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.678421][ T72] ___sys_sendmsg+0xee/0x170 [ 572.678421][ T72] __sys_sendmsg+0xcd/0x170 [ 572.678421][ T72] do_syscall_64+0xc6/0x1e0 [ 572.678421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.678421][ T72] [ 572.680387][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 572.680702][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 572.680702][ T72] netdev_get_by_index+0x5e/0x80 [ 572.680702][ T72] fib6_nh_init+0x3d8/0x15b0 [ 572.680702][ T72] ip6_route_info_create+0xf18/0x17d0 [ 572.680702][ T72] addrconf_f6i_alloc+0x244/0x410 [ 572.680702][ T72] ipv6_add_addr+0x411/0x2000 [ 572.680702][ T72] inet6_addr_add+0x30e/0xa40 [ 572.680702][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 572.680702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.680702][ T72] netlink_rcv_skb+0x130/0x360 [ 572.680702][ T72] netlink_unicast+0x449/0x710 [ 572.680702][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.680702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.680702][ T72] ___sys_sendmsg+0xee/0x170 [ 572.680702][ T72] __sys_sendmsg+0xcd/0x170 [ 572.680702][ T72] do_syscall_64+0xc6/0x1e0 [ 572.680702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.680702][ T72] [ 572.682884][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 572.682884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 572.682884][ T72] ipv6_find_idev+0x102/0x170 [ 572.682884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.682884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.682884][ T72] netlink_rcv_skb+0x130/0x360 [ 572.682884][ T72] netlink_unicast+0x449/0x710 [ 572.682884][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.682884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.682884][ T72] ___sys_sendmsg+0xee/0x170 [ 572.682884][ T72] __sys_sendmsg+0xcd/0x170 [ 572.682884][ T72] do_syscall_64+0xc6/0x1e0 [ 572.682884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.682884][ T72] [ 572.684701][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 572.684701][ T72] neigh_parms_alloc+0x1e5/0x510 [ 572.684701][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 572.684701][ T72] ipv6_find_idev+0x102/0x170 [ 572.684701][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 572.684701][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 572.684701][ T72] netlink_rcv_skb+0x130/0x360 [ 572.684701][ T72] netlink_unicast+0x449/0x710 [ 572.684701][ T72] netlink_sendmsg+0x723/0xbe0 [ 572.684701][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 572.684701][ T72] ___sys_sendmsg+0xee/0x170 [ 572.684701][ T72] __sys_sendmsg+0xcd/0x170 [ 572.684701][ T72] do_syscall_64+0xc6/0x1e0 [ 572.684701][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 572.684701][ T72] [ 582.790847][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 582.791233][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 582.791233][ T72] netdev_get_by_index+0x5e/0x80 [ 582.791233][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.791233][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.791233][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.791233][ T72] ipv6_add_addr+0x411/0x2000 [ 582.791233][ T72] inet6_addr_add+0x30e/0xa40 [ 582.791233][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.791233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.791233][ T72] netlink_rcv_skb+0x130/0x360 [ 582.791233][ T72] netlink_unicast+0x449/0x710 [ 582.791233][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.791233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.791233][ T72] ___sys_sendmsg+0xee/0x170 [ 582.791233][ T72] __sys_sendmsg+0xcd/0x170 [ 582.791233][ T72] do_syscall_64+0xc6/0x1e0 [ 582.791233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.791233][ T72] [ 582.793215][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 582.793215][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.793215][ T72] ipv6_find_idev+0x102/0x170 [ 582.793215][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.793215][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.793215][ T72] netlink_rcv_skb+0x130/0x360 [ 582.793215][ T72] netlink_unicast+0x449/0x710 [ 582.793215][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.793215][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.793215][ T72] ___sys_sendmsg+0xee/0x170 [ 582.793215][ T72] __sys_sendmsg+0xcd/0x170 [ 582.793215][ T72] do_syscall_64+0xc6/0x1e0 [ 582.793215][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.793215][ T72] [ 582.794896][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 582.794896][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.794896][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.794896][ T72] ipv6_find_idev+0x102/0x170 [ 582.794896][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.794896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.794896][ T72] netlink_rcv_skb+0x130/0x360 [ 582.794896][ T72] netlink_unicast+0x449/0x710 [ 582.794896][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.794896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.794896][ T72] ___sys_sendmsg+0xee/0x170 [ 582.794896][ T72] __sys_sendmsg+0xcd/0x170 [ 582.794896][ T72] do_syscall_64+0xc6/0x1e0 [ 582.794896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.794896][ T72] [ 582.796755][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 582.797042][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 582.797042][ T72] netdev_get_by_index+0x5e/0x80 [ 582.797042][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.797042][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.797042][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.797042][ T72] ipv6_add_addr+0x411/0x2000 [ 582.797042][ T72] inet6_addr_add+0x30e/0xa40 [ 582.797042][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.797042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.797042][ T72] netlink_rcv_skb+0x130/0x360 [ 582.797042][ T72] netlink_unicast+0x449/0x710 [ 582.797042][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.797042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.797042][ T72] ___sys_sendmsg+0xee/0x170 [ 582.797042][ T72] __sys_sendmsg+0xcd/0x170 [ 582.797042][ T72] do_syscall_64+0xc6/0x1e0 [ 582.797042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.797042][ T72] [ 582.799233][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 582.799233][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.799233][ T72] ipv6_find_idev+0x102/0x170 [ 582.799233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.799233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.799233][ T72] netlink_rcv_skb+0x130/0x360 [ 582.799233][ T72] netlink_unicast+0x449/0x710 [ 582.799233][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.799233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.799233][ T72] ___sys_sendmsg+0xee/0x170 [ 582.799233][ T72] __sys_sendmsg+0xcd/0x170 [ 582.799233][ T72] do_syscall_64+0xc6/0x1e0 [ 582.799233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.799233][ T72] [ 582.800906][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 582.800906][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.800906][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.800906][ T72] ipv6_find_idev+0x102/0x170 [ 582.800906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.800906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.800906][ T72] netlink_rcv_skb+0x130/0x360 [ 582.800906][ T72] netlink_unicast+0x449/0x710 [ 582.800906][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.800906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.800906][ T72] ___sys_sendmsg+0xee/0x170 [ 582.800906][ T72] __sys_sendmsg+0xcd/0x170 [ 582.800906][ T72] do_syscall_64+0xc6/0x1e0 [ 582.800906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.800906][ T72] [ 582.802758][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 582.803045][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 582.803045][ T72] netdev_get_by_index+0x5e/0x80 [ 582.803045][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.803045][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.803045][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.803045][ T72] ipv6_add_addr+0x411/0x2000 [ 582.803045][ T72] inet6_addr_add+0x30e/0xa40 [ 582.803045][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.803045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.803045][ T72] netlink_rcv_skb+0x130/0x360 [ 582.803045][ T72] netlink_unicast+0x449/0x710 [ 582.803045][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.803045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.803045][ T72] ___sys_sendmsg+0xee/0x170 [ 582.803045][ T72] __sys_sendmsg+0xcd/0x170 [ 582.803045][ T72] do_syscall_64+0xc6/0x1e0 [ 582.803045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.803045][ T72] [ 582.805211][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 582.805211][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.805211][ T72] ipv6_find_idev+0x102/0x170 [ 582.805211][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.805211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.805211][ T72] netlink_rcv_skb+0x130/0x360 [ 582.805211][ T72] netlink_unicast+0x449/0x710 [ 582.805211][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.805211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.805211][ T72] ___sys_sendmsg+0xee/0x170 [ 582.805211][ T72] __sys_sendmsg+0xcd/0x170 [ 582.805211][ T72] do_syscall_64+0xc6/0x1e0 [ 582.805211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.805211][ T72] [ 582.806875][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 582.806875][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.806875][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.806875][ T72] ipv6_find_idev+0x102/0x170 [ 582.806875][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.806875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.806875][ T72] netlink_rcv_skb+0x130/0x360 [ 582.806875][ T72] netlink_unicast+0x449/0x710 [ 582.806875][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.806875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.806875][ T72] ___sys_sendmsg+0xee/0x170 [ 582.806875][ T72] __sys_sendmsg+0xcd/0x170 [ 582.806875][ T72] do_syscall_64+0xc6/0x1e0 [ 582.806875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.806875][ T72] [ 582.808731][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 582.809038][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 582.809038][ T72] netdev_get_by_index+0x5e/0x80 [ 582.809038][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.809038][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.809038][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.809038][ T72] ipv6_add_addr+0x411/0x2000 [ 582.809038][ T72] inet6_addr_add+0x30e/0xa40 [ 582.809038][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.809038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.809038][ T72] netlink_rcv_skb+0x130/0x360 [ 582.809038][ T72] netlink_unicast+0x449/0x710 [ 582.809038][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.809038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.809038][ T72] ___sys_sendmsg+0xee/0x170 [ 582.809038][ T72] __sys_sendmsg+0xcd/0x170 [ 582.809038][ T72] do_syscall_64+0xc6/0x1e0 [ 582.809038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.809038][ T72] [ 582.811171][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 582.811171][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.811171][ T72] ipv6_find_idev+0x102/0x170 [ 582.811171][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.811171][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.811171][ T72] netlink_rcv_skb+0x130/0x360 [ 582.811171][ T72] netlink_unicast+0x449/0x710 [ 582.811171][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.811171][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.811171][ T72] ___sys_sendmsg+0xee/0x170 [ 582.811171][ T72] __sys_sendmsg+0xcd/0x170 [ 582.811171][ T72] do_syscall_64+0xc6/0x1e0 [ 582.811171][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.811171][ T72] [ 582.812829][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 582.812829][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.812829][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.812829][ T72] ipv6_find_idev+0x102/0x170 [ 582.812829][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.812829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.812829][ T72] netlink_rcv_skb+0x130/0x360 [ 582.812829][ T72] netlink_unicast+0x449/0x710 [ 582.812829][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.812829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.812829][ T72] ___sys_sendmsg+0xee/0x170 [ 582.812829][ T72] __sys_sendmsg+0xcd/0x170 [ 582.812829][ T72] do_syscall_64+0xc6/0x1e0 [ 582.812829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.812829][ T72] [ 582.815193][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 582.815490][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 582.815490][ T72] netdev_get_by_index+0x5e/0x80 [ 582.815490][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.815490][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.815490][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.815490][ T72] ipv6_add_addr+0x411/0x2000 [ 582.815490][ T72] inet6_addr_add+0x30e/0xa40 [ 582.815490][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.815490][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.815490][ T72] netlink_rcv_skb+0x130/0x360 [ 582.815490][ T72] netlink_unicast+0x449/0x710 [ 582.815490][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.815490][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.815490][ T72] ___sys_sendmsg+0xee/0x170 [ 582.815490][ T72] __sys_sendmsg+0xcd/0x170 [ 582.815490][ T72] do_syscall_64+0xc6/0x1e0 [ 582.815490][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.815490][ T72] [ 582.817793][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 582.817793][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.817793][ T72] ipv6_find_idev+0x102/0x170 [ 582.817793][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.817793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.817793][ T72] netlink_rcv_skb+0x130/0x360 [ 582.817793][ T72] netlink_unicast+0x449/0x710 [ 582.817793][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.817793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.817793][ T72] ___sys_sendmsg+0xee/0x170 [ 582.817793][ T72] __sys_sendmsg+0xcd/0x170 [ 582.817793][ T72] do_syscall_64+0xc6/0x1e0 [ 582.817793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.817793][ T72] [ 582.819565][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 582.819565][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.819565][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.819565][ T72] ipv6_find_idev+0x102/0x170 [ 582.819565][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.819565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.819565][ T72] netlink_rcv_skb+0x130/0x360 [ 582.819565][ T72] netlink_unicast+0x449/0x710 [ 582.819565][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.819565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.819565][ T72] ___sys_sendmsg+0xee/0x170 [ 582.819565][ T72] __sys_sendmsg+0xcd/0x170 [ 582.819565][ T72] do_syscall_64+0xc6/0x1e0 [ 582.819565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.819565][ T72] [ 582.821470][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 582.821754][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 582.821754][ T72] netdev_get_by_index+0x5e/0x80 [ 582.821754][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.821754][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.821754][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.821754][ T72] ipv6_add_addr+0x411/0x2000 [ 582.821754][ T72] inet6_addr_add+0x30e/0xa40 [ 582.821754][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.821754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.821754][ T72] netlink_rcv_skb+0x130/0x360 [ 582.821754][ T72] netlink_unicast+0x449/0x710 [ 582.821754][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.821754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.821754][ T72] ___sys_sendmsg+0xee/0x170 [ 582.821754][ T72] __sys_sendmsg+0xcd/0x170 [ 582.821754][ T72] do_syscall_64+0xc6/0x1e0 [ 582.821754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.821754][ T72] [ 582.824140][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 582.824140][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.824140][ T72] ipv6_find_idev+0x102/0x170 [ 582.824140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.824140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.824140][ T72] netlink_rcv_skb+0x130/0x360 [ 582.824140][ T72] netlink_unicast+0x449/0x710 [ 582.824140][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.824140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.824140][ T72] ___sys_sendmsg+0xee/0x170 [ 582.824140][ T72] __sys_sendmsg+0xcd/0x170 [ 582.824140][ T72] do_syscall_64+0xc6/0x1e0 [ 582.824140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.824140][ T72] [ 582.826056][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 582.826056][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.826056][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.826056][ T72] ipv6_find_idev+0x102/0x170 [ 582.826056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.826056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.826056][ T72] netlink_rcv_skb+0x130/0x360 [ 582.826056][ T72] netlink_unicast+0x449/0x710 [ 582.826056][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.826056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.826056][ T72] ___sys_sendmsg+0xee/0x170 [ 582.826056][ T72] __sys_sendmsg+0xcd/0x170 [ 582.826056][ T72] do_syscall_64+0xc6/0x1e0 [ 582.826056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.826056][ T72] [ 582.828378][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 582.828688][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 582.828688][ T72] netdev_get_by_index+0x5e/0x80 [ 582.828688][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.828688][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.828688][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.828688][ T72] ipv6_add_addr+0x411/0x2000 [ 582.828688][ T72] inet6_addr_add+0x30e/0xa40 [ 582.828688][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.828688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.828688][ T72] netlink_rcv_skb+0x130/0x360 [ 582.828688][ T72] netlink_unicast+0x449/0x710 [ 582.828688][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.828688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.828688][ T72] ___sys_sendmsg+0xee/0x170 [ 582.828688][ T72] __sys_sendmsg+0xcd/0x170 [ 582.828688][ T72] do_syscall_64+0xc6/0x1e0 [ 582.828688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.828688][ T72] [ 582.831103][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 582.831103][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.831103][ T72] ipv6_find_idev+0x102/0x170 [ 582.831103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.831103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.831103][ T72] netlink_rcv_skb+0x130/0x360 [ 582.831103][ T72] netlink_unicast+0x449/0x710 [ 582.831103][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.831103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.831103][ T72] ___sys_sendmsg+0xee/0x170 [ 582.831103][ T72] __sys_sendmsg+0xcd/0x170 [ 582.831103][ T72] do_syscall_64+0xc6/0x1e0 [ 582.831103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.831103][ T72] [ 582.833001][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 582.833001][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.833001][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.833001][ T72] ipv6_find_idev+0x102/0x170 [ 582.833001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.833001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.833001][ T72] netlink_rcv_skb+0x130/0x360 [ 582.833001][ T72] netlink_unicast+0x449/0x710 [ 582.833001][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.833001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.833001][ T72] ___sys_sendmsg+0xee/0x170 [ 582.833001][ T72] __sys_sendmsg+0xcd/0x170 [ 582.833001][ T72] do_syscall_64+0xc6/0x1e0 [ 582.833001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.833001][ T72] [ 582.835122][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 582.835404][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 582.835404][ T72] netdev_get_by_index+0x5e/0x80 [ 582.835404][ T72] fib6_nh_init+0x3d8/0x15b0 [ 582.835404][ T72] ip6_route_info_create+0xf18/0x17d0 [ 582.835404][ T72] addrconf_f6i_alloc+0x244/0x410 [ 582.835404][ T72] ipv6_add_addr+0x411/0x2000 [ 582.835404][ T72] inet6_addr_add+0x30e/0xa40 [ 582.835404][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 582.835404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.835404][ T72] netlink_rcv_skb+0x130/0x360 [ 582.835404][ T72] netlink_unicast+0x449/0x710 [ 582.835404][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.835404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.835404][ T72] ___sys_sendmsg+0xee/0x170 [ 582.835404][ T72] __sys_sendmsg+0xcd/0x170 [ 582.835404][ T72] do_syscall_64+0xc6/0x1e0 [ 582.835404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.835404][ T72] [ 582.837718][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 582.837718][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 582.837718][ T72] ipv6_find_idev+0x102/0x170 [ 582.837718][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.837718][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.837718][ T72] netlink_rcv_skb+0x130/0x360 [ 582.837718][ T72] netlink_unicast+0x449/0x710 [ 582.837718][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.837718][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.837718][ T72] ___sys_sendmsg+0xee/0x170 [ 582.837718][ T72] __sys_sendmsg+0xcd/0x170 [ 582.837718][ T72] do_syscall_64+0xc6/0x1e0 [ 582.837718][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.837718][ T72] [ 582.839793][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 582.839793][ T72] neigh_parms_alloc+0x1e5/0x510 [ 582.839793][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 582.839793][ T72] ipv6_find_idev+0x102/0x170 [ 582.839793][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 582.839793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 582.839793][ T72] netlink_rcv_skb+0x130/0x360 [ 582.839793][ T72] netlink_unicast+0x449/0x710 [ 582.839793][ T72] netlink_sendmsg+0x723/0xbe0 [ 582.839793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 582.839793][ T72] ___sys_sendmsg+0xee/0x170 [ 582.839793][ T72] __sys_sendmsg+0xcd/0x170 [ 582.839793][ T72] do_syscall_64+0xc6/0x1e0 [ 582.839793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 582.839793][ T72] [ 593.086880][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 593.087383][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 593.087383][ T72] netdev_get_by_index+0x5e/0x80 [ 593.087383][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.087383][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.087383][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.087383][ T72] ipv6_add_addr+0x411/0x2000 [ 593.087383][ T72] inet6_addr_add+0x30e/0xa40 [ 593.087383][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.087383][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.087383][ T72] netlink_rcv_skb+0x130/0x360 [ 593.087383][ T72] netlink_unicast+0x449/0x710 [ 593.087383][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.087383][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.087383][ T72] ___sys_sendmsg+0xee/0x170 [ 593.087383][ T72] __sys_sendmsg+0xcd/0x170 [ 593.087383][ T72] do_syscall_64+0xc6/0x1e0 [ 593.087383][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.087383][ T72] [ 593.089838][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 593.089838][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.089838][ T72] ipv6_find_idev+0x102/0x170 [ 593.089838][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.089838][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.089838][ T72] netlink_rcv_skb+0x130/0x360 [ 593.089838][ T72] netlink_unicast+0x449/0x710 [ 593.089838][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.089838][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.089838][ T72] ___sys_sendmsg+0xee/0x170 [ 593.089838][ T72] __sys_sendmsg+0xcd/0x170 [ 593.089838][ T72] do_syscall_64+0xc6/0x1e0 [ 593.089838][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.089838][ T72] [ 593.091640][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 593.091640][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.091640][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.091640][ T72] ipv6_find_idev+0x102/0x170 [ 593.091640][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.091640][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.091640][ T72] netlink_rcv_skb+0x130/0x360 [ 593.091640][ T72] netlink_unicast+0x449/0x710 [ 593.091640][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.091640][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.091640][ T72] ___sys_sendmsg+0xee/0x170 [ 593.091640][ T72] __sys_sendmsg+0xcd/0x170 [ 593.091640][ T72] do_syscall_64+0xc6/0x1e0 [ 593.091640][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.091640][ T72] [ 593.093631][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 593.093945][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 593.093945][ T72] netdev_get_by_index+0x5e/0x80 [ 593.093945][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.093945][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.093945][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.093945][ T72] ipv6_add_addr+0x411/0x2000 [ 593.093945][ T72] inet6_addr_add+0x30e/0xa40 [ 593.093945][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.093945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.093945][ T72] netlink_rcv_skb+0x130/0x360 [ 593.093945][ T72] netlink_unicast+0x449/0x710 [ 593.093945][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.093945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.093945][ T72] ___sys_sendmsg+0xee/0x170 [ 593.093945][ T72] __sys_sendmsg+0xcd/0x170 [ 593.093945][ T72] do_syscall_64+0xc6/0x1e0 [ 593.093945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.093945][ T72] [ 593.096200][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 593.096200][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.096200][ T72] ipv6_find_idev+0x102/0x170 [ 593.096200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.096200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.096200][ T72] netlink_rcv_skb+0x130/0x360 [ 593.096200][ T72] netlink_unicast+0x449/0x710 [ 593.096200][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.096200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.096200][ T72] ___sys_sendmsg+0xee/0x170 [ 593.096200][ T72] __sys_sendmsg+0xcd/0x170 [ 593.096200][ T72] do_syscall_64+0xc6/0x1e0 [ 593.096200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.096200][ T72] [ 593.097955][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 593.097955][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.097955][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.097955][ T72] ipv6_find_idev+0x102/0x170 [ 593.097955][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.097955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.097955][ T72] netlink_rcv_skb+0x130/0x360 [ 593.097955][ T72] netlink_unicast+0x449/0x710 [ 593.097955][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.097955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.097955][ T72] ___sys_sendmsg+0xee/0x170 [ 593.097955][ T72] __sys_sendmsg+0xcd/0x170 [ 593.097955][ T72] do_syscall_64+0xc6/0x1e0 [ 593.097955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.097955][ T72] [ 593.099878][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 593.100186][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 593.100186][ T72] netdev_get_by_index+0x5e/0x80 [ 593.100186][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.100186][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.100186][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.100186][ T72] ipv6_add_addr+0x411/0x2000 [ 593.100186][ T72] inet6_addr_add+0x30e/0xa40 [ 593.100186][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.100186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.100186][ T72] netlink_rcv_skb+0x130/0x360 [ 593.100186][ T72] netlink_unicast+0x449/0x710 [ 593.100186][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.100186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.100186][ T72] ___sys_sendmsg+0xee/0x170 [ 593.100186][ T72] __sys_sendmsg+0xcd/0x170 [ 593.100186][ T72] do_syscall_64+0xc6/0x1e0 [ 593.100186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.100186][ T72] [ 593.102443][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 593.102443][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.102443][ T72] ipv6_find_idev+0x102/0x170 [ 593.102443][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.102443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.102443][ T72] netlink_rcv_skb+0x130/0x360 [ 593.102443][ T72] netlink_unicast+0x449/0x710 [ 593.102443][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.102443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.102443][ T72] ___sys_sendmsg+0xee/0x170 [ 593.102443][ T72] __sys_sendmsg+0xcd/0x170 [ 593.102443][ T72] do_syscall_64+0xc6/0x1e0 [ 593.102443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.102443][ T72] [ 593.104173][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 593.104173][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.104173][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.104173][ T72] ipv6_find_idev+0x102/0x170 [ 593.104173][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.104173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.104173][ T72] netlink_rcv_skb+0x130/0x360 [ 593.104173][ T72] netlink_unicast+0x449/0x710 [ 593.104173][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.104173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.104173][ T72] ___sys_sendmsg+0xee/0x170 [ 593.104173][ T72] __sys_sendmsg+0xcd/0x170 [ 593.104173][ T72] do_syscall_64+0xc6/0x1e0 [ 593.104173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.104173][ T72] [ 593.106080][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 593.106370][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 593.106370][ T72] netdev_get_by_index+0x5e/0x80 [ 593.106370][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.106370][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.106370][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.106370][ T72] ipv6_add_addr+0x411/0x2000 [ 593.106370][ T72] inet6_addr_add+0x30e/0xa40 [ 593.106370][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.106370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.106370][ T72] netlink_rcv_skb+0x130/0x360 [ 593.106370][ T72] netlink_unicast+0x449/0x710 [ 593.106370][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.106370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.106370][ T72] ___sys_sendmsg+0xee/0x170 [ 593.106370][ T72] __sys_sendmsg+0xcd/0x170 [ 593.106370][ T72] do_syscall_64+0xc6/0x1e0 [ 593.106370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.106370][ T72] [ 593.108630][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 593.108630][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.108630][ T72] ipv6_find_idev+0x102/0x170 [ 593.108630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.108630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.108630][ T72] netlink_rcv_skb+0x130/0x360 [ 593.108630][ T72] netlink_unicast+0x449/0x710 [ 593.108630][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.108630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.108630][ T72] ___sys_sendmsg+0xee/0x170 [ 593.108630][ T72] __sys_sendmsg+0xcd/0x170 [ 593.108630][ T72] do_syscall_64+0xc6/0x1e0 [ 593.108630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.108630][ T72] [ 593.110365][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 593.110365][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.110365][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.110365][ T72] ipv6_find_idev+0x102/0x170 [ 593.110365][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.110365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.110365][ T72] netlink_rcv_skb+0x130/0x360 [ 593.110365][ T72] netlink_unicast+0x449/0x710 [ 593.110365][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.110365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.110365][ T72] ___sys_sendmsg+0xee/0x170 [ 593.110365][ T72] __sys_sendmsg+0xcd/0x170 [ 593.110365][ T72] do_syscall_64+0xc6/0x1e0 [ 593.110365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.110365][ T72] [ 593.112313][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 593.112605][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 593.112605][ T72] netdev_get_by_index+0x5e/0x80 [ 593.112605][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.112605][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.112605][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.112605][ T72] ipv6_add_addr+0x411/0x2000 [ 593.112605][ T72] inet6_addr_add+0x30e/0xa40 [ 593.112605][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.112605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.112605][ T72] netlink_rcv_skb+0x130/0x360 [ 593.112605][ T72] netlink_unicast+0x449/0x710 [ 593.112605][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.112605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.112605][ T72] ___sys_sendmsg+0xee/0x170 [ 593.112605][ T72] __sys_sendmsg+0xcd/0x170 [ 593.112605][ T72] do_syscall_64+0xc6/0x1e0 [ 593.112605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.112605][ T72] [ 593.114863][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 593.114863][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.114863][ T72] ipv6_find_idev+0x102/0x170 [ 593.114863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.114863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.114863][ T72] netlink_rcv_skb+0x130/0x360 [ 593.114863][ T72] netlink_unicast+0x449/0x710 [ 593.114863][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.114863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.114863][ T72] ___sys_sendmsg+0xee/0x170 [ 593.114863][ T72] __sys_sendmsg+0xcd/0x170 [ 593.114863][ T72] do_syscall_64+0xc6/0x1e0 [ 593.114863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.114863][ T72] [ 593.116672][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 593.116672][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.116672][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.116672][ T72] ipv6_find_idev+0x102/0x170 [ 593.116672][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.116672][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.116672][ T72] netlink_rcv_skb+0x130/0x360 [ 593.116672][ T72] netlink_unicast+0x449/0x710 [ 593.116672][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.116672][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.116672][ T72] ___sys_sendmsg+0xee/0x170 [ 593.116672][ T72] __sys_sendmsg+0xcd/0x170 [ 593.116672][ T72] do_syscall_64+0xc6/0x1e0 [ 593.116672][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.116672][ T72] [ 593.118884][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 593.119194][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 593.119194][ T72] netdev_get_by_index+0x5e/0x80 [ 593.119194][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.119194][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.119194][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.119194][ T72] ipv6_add_addr+0x411/0x2000 [ 593.119194][ T72] inet6_addr_add+0x30e/0xa40 [ 593.119194][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.119194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.119194][ T72] netlink_rcv_skb+0x130/0x360 [ 593.119194][ T72] netlink_unicast+0x449/0x710 [ 593.119194][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.119194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.119194][ T72] ___sys_sendmsg+0xee/0x170 [ 593.119194][ T72] __sys_sendmsg+0xcd/0x170 [ 593.119194][ T72] do_syscall_64+0xc6/0x1e0 [ 593.119194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.119194][ T72] [ 593.121747][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 593.121747][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.121747][ T72] ipv6_find_idev+0x102/0x170 [ 593.121747][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.121747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.121747][ T72] netlink_rcv_skb+0x130/0x360 [ 593.121747][ T72] netlink_unicast+0x449/0x710 [ 593.121747][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.121747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.121747][ T72] ___sys_sendmsg+0xee/0x170 [ 593.121747][ T72] __sys_sendmsg+0xcd/0x170 [ 593.121747][ T72] do_syscall_64+0xc6/0x1e0 [ 593.121747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.121747][ T72] [ 593.123650][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 593.123650][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.123650][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.123650][ T72] ipv6_find_idev+0x102/0x170 [ 593.123650][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.123650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.123650][ T72] netlink_rcv_skb+0x130/0x360 [ 593.123650][ T72] netlink_unicast+0x449/0x710 [ 593.123650][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.123650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.123650][ T72] ___sys_sendmsg+0xee/0x170 [ 593.123650][ T72] __sys_sendmsg+0xcd/0x170 [ 593.123650][ T72] do_syscall_64+0xc6/0x1e0 [ 593.123650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.123650][ T72] [ 593.125848][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 593.126135][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 593.126135][ T72] netdev_get_by_index+0x5e/0x80 [ 593.126135][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.126135][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.126135][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.126135][ T72] ipv6_add_addr+0x411/0x2000 [ 593.126135][ T72] inet6_addr_add+0x30e/0xa40 [ 593.126135][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.126135][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.126135][ T72] netlink_rcv_skb+0x130/0x360 [ 593.126135][ T72] netlink_unicast+0x449/0x710 [ 593.126135][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.126135][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.126135][ T72] ___sys_sendmsg+0xee/0x170 [ 593.126135][ T72] __sys_sendmsg+0xcd/0x170 [ 593.126135][ T72] do_syscall_64+0xc6/0x1e0 [ 593.126135][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.126135][ T72] [ 593.128639][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 593.128639][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.128639][ T72] ipv6_find_idev+0x102/0x170 [ 593.128639][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.128639][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.128639][ T72] netlink_rcv_skb+0x130/0x360 [ 593.128639][ T72] netlink_unicast+0x449/0x710 [ 593.128639][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.128639][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.128639][ T72] ___sys_sendmsg+0xee/0x170 [ 593.128639][ T72] __sys_sendmsg+0xcd/0x170 [ 593.128639][ T72] do_syscall_64+0xc6/0x1e0 [ 593.128639][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.128639][ T72] [ 593.130622][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 593.130622][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.130622][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.130622][ T72] ipv6_find_idev+0x102/0x170 [ 593.130622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.130622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.130622][ T72] netlink_rcv_skb+0x130/0x360 [ 593.130622][ T72] netlink_unicast+0x449/0x710 [ 593.130622][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.130622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.130622][ T72] ___sys_sendmsg+0xee/0x170 [ 593.130622][ T72] __sys_sendmsg+0xcd/0x170 [ 593.130622][ T72] do_syscall_64+0xc6/0x1e0 [ 593.130622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.130622][ T72] [ 593.132768][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 593.133070][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 593.133070][ T72] netdev_get_by_index+0x5e/0x80 [ 593.133070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 593.133070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 593.133070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 593.133070][ T72] ipv6_add_addr+0x411/0x2000 [ 593.133070][ T72] inet6_addr_add+0x30e/0xa40 [ 593.133070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 593.133070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.133070][ T72] netlink_rcv_skb+0x130/0x360 [ 593.133070][ T72] netlink_unicast+0x449/0x710 [ 593.133070][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.133070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.133070][ T72] ___sys_sendmsg+0xee/0x170 [ 593.133070][ T72] __sys_sendmsg+0xcd/0x170 [ 593.133070][ T72] do_syscall_64+0xc6/0x1e0 [ 593.133070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.133070][ T72] [ 593.135515][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 593.135515][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 593.135515][ T72] ipv6_find_idev+0x102/0x170 [ 593.135515][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.135515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.135515][ T72] netlink_rcv_skb+0x130/0x360 [ 593.135515][ T72] netlink_unicast+0x449/0x710 [ 593.135515][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.135515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.135515][ T72] ___sys_sendmsg+0xee/0x170 [ 593.135515][ T72] __sys_sendmsg+0xcd/0x170 [ 593.135515][ T72] do_syscall_64+0xc6/0x1e0 [ 593.135515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.135515][ T72] [ 593.137436][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 593.137436][ T72] neigh_parms_alloc+0x1e5/0x510 [ 593.137436][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 593.137436][ T72] ipv6_find_idev+0x102/0x170 [ 593.137436][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 593.137436][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 593.137436][ T72] netlink_rcv_skb+0x130/0x360 [ 593.137436][ T72] netlink_unicast+0x449/0x710 [ 593.137436][ T72] netlink_sendmsg+0x723/0xbe0 [ 593.137436][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 593.137436][ T72] ___sys_sendmsg+0xee/0x170 [ 593.137436][ T72] __sys_sendmsg+0xcd/0x170 [ 593.137436][ T72] do_syscall_64+0xc6/0x1e0 [ 593.137436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 593.137436][ T72] [ 603.198843][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 603.199363][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 603.199363][ T72] netdev_get_by_index+0x5e/0x80 [ 603.199363][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.199363][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.199363][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.199363][ T72] ipv6_add_addr+0x411/0x2000 [ 603.199363][ T72] inet6_addr_add+0x30e/0xa40 [ 603.199363][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.199363][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.199363][ T72] netlink_rcv_skb+0x130/0x360 [ 603.199363][ T72] netlink_unicast+0x449/0x710 [ 603.199363][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.199363][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.199363][ T72] ___sys_sendmsg+0xee/0x170 [ 603.199363][ T72] __sys_sendmsg+0xcd/0x170 [ 603.199363][ T72] do_syscall_64+0xc6/0x1e0 [ 603.199363][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.199363][ T72] [ 603.201399][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 603.201399][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.201399][ T72] ipv6_find_idev+0x102/0x170 [ 603.201399][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.201399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.201399][ T72] netlink_rcv_skb+0x130/0x360 [ 603.201399][ T72] netlink_unicast+0x449/0x710 [ 603.201399][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.201399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.201399][ T72] ___sys_sendmsg+0xee/0x170 [ 603.201399][ T72] __sys_sendmsg+0xcd/0x170 [ 603.201399][ T72] do_syscall_64+0xc6/0x1e0 [ 603.201399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.201399][ T72] [ 603.202940][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 603.202940][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.202940][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.202940][ T72] ipv6_find_idev+0x102/0x170 [ 603.202940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.202940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.202940][ T72] netlink_rcv_skb+0x130/0x360 [ 603.202940][ T72] netlink_unicast+0x449/0x710 [ 603.202940][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.202940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.202940][ T72] ___sys_sendmsg+0xee/0x170 [ 603.202940][ T72] __sys_sendmsg+0xcd/0x170 [ 603.202940][ T72] do_syscall_64+0xc6/0x1e0 [ 603.202940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.202940][ T72] [ 603.204752][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 603.205019][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 603.205019][ T72] netdev_get_by_index+0x5e/0x80 [ 603.205019][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.205019][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.205019][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.205019][ T72] ipv6_add_addr+0x411/0x2000 [ 603.205019][ T72] inet6_addr_add+0x30e/0xa40 [ 603.205019][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.205019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.205019][ T72] netlink_rcv_skb+0x130/0x360 [ 603.205019][ T72] netlink_unicast+0x449/0x710 [ 603.205019][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.205019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.205019][ T72] ___sys_sendmsg+0xee/0x170 [ 603.205019][ T72] __sys_sendmsg+0xcd/0x170 [ 603.205019][ T72] do_syscall_64+0xc6/0x1e0 [ 603.205019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.205019][ T72] [ 603.207044][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 603.207044][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.207044][ T72] ipv6_find_idev+0x102/0x170 [ 603.207044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.207044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.207044][ T72] netlink_rcv_skb+0x130/0x360 [ 603.207044][ T72] netlink_unicast+0x449/0x710 [ 603.207044][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.207044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.207044][ T72] ___sys_sendmsg+0xee/0x170 [ 603.207044][ T72] __sys_sendmsg+0xcd/0x170 [ 603.207044][ T72] do_syscall_64+0xc6/0x1e0 [ 603.207044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.207044][ T72] [ 603.208620][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 603.208620][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.208620][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.208620][ T72] ipv6_find_idev+0x102/0x170 [ 603.208620][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.208620][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.208620][ T72] netlink_rcv_skb+0x130/0x360 [ 603.208620][ T72] netlink_unicast+0x449/0x710 [ 603.208620][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.208620][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.208620][ T72] ___sys_sendmsg+0xee/0x170 [ 603.208620][ T72] __sys_sendmsg+0xcd/0x170 [ 603.208620][ T72] do_syscall_64+0xc6/0x1e0 [ 603.208620][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.208620][ T72] [ 603.210310][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 603.210579][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 603.210579][ T72] netdev_get_by_index+0x5e/0x80 [ 603.210579][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.210579][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.210579][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.210579][ T72] ipv6_add_addr+0x411/0x2000 [ 603.210579][ T72] inet6_addr_add+0x30e/0xa40 [ 603.210579][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.210579][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.210579][ T72] netlink_rcv_skb+0x130/0x360 [ 603.210579][ T72] netlink_unicast+0x449/0x710 [ 603.210579][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.210579][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.210579][ T72] ___sys_sendmsg+0xee/0x170 [ 603.210579][ T72] __sys_sendmsg+0xcd/0x170 [ 603.210579][ T72] do_syscall_64+0xc6/0x1e0 [ 603.210579][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.210579][ T72] [ 603.212571][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 603.212571][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.212571][ T72] ipv6_find_idev+0x102/0x170 [ 603.212571][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.212571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.212571][ T72] netlink_rcv_skb+0x130/0x360 [ 603.212571][ T72] netlink_unicast+0x449/0x710 [ 603.212571][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.212571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.212571][ T72] ___sys_sendmsg+0xee/0x170 [ 603.212571][ T72] __sys_sendmsg+0xcd/0x170 [ 603.212571][ T72] do_syscall_64+0xc6/0x1e0 [ 603.212571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.212571][ T72] [ 603.214111][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 603.214111][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.214111][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.214111][ T72] ipv6_find_idev+0x102/0x170 [ 603.214111][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.214111][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.214111][ T72] netlink_rcv_skb+0x130/0x360 [ 603.214111][ T72] netlink_unicast+0x449/0x710 [ 603.214111][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.214111][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.214111][ T72] ___sys_sendmsg+0xee/0x170 [ 603.214111][ T72] __sys_sendmsg+0xcd/0x170 [ 603.214111][ T72] do_syscall_64+0xc6/0x1e0 [ 603.214111][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.214111][ T72] [ 603.215801][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 603.216073][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 603.216073][ T72] netdev_get_by_index+0x5e/0x80 [ 603.216073][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.216073][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.216073][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.216073][ T72] ipv6_add_addr+0x411/0x2000 [ 603.216073][ T72] inet6_addr_add+0x30e/0xa40 [ 603.216073][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.216073][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.216073][ T72] netlink_rcv_skb+0x130/0x360 [ 603.216073][ T72] netlink_unicast+0x449/0x710 [ 603.216073][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.216073][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.216073][ T72] ___sys_sendmsg+0xee/0x170 [ 603.216073][ T72] __sys_sendmsg+0xcd/0x170 [ 603.216073][ T72] do_syscall_64+0xc6/0x1e0 [ 603.216073][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.216073][ T72] [ 603.218056][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 603.218056][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.218056][ T72] ipv6_find_idev+0x102/0x170 [ 603.218056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.218056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.218056][ T72] netlink_rcv_skb+0x130/0x360 [ 603.218056][ T72] netlink_unicast+0x449/0x710 [ 603.218056][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.218056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.218056][ T72] ___sys_sendmsg+0xee/0x170 [ 603.218056][ T72] __sys_sendmsg+0xcd/0x170 [ 603.218056][ T72] do_syscall_64+0xc6/0x1e0 [ 603.218056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.218056][ T72] [ 603.219609][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 603.219609][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.219609][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.219609][ T72] ipv6_find_idev+0x102/0x170 [ 603.219609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.219609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.219609][ T72] netlink_rcv_skb+0x130/0x360 [ 603.219609][ T72] netlink_unicast+0x449/0x710 [ 603.219609][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.219609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.219609][ T72] ___sys_sendmsg+0xee/0x170 [ 603.219609][ T72] __sys_sendmsg+0xcd/0x170 [ 603.219609][ T72] do_syscall_64+0xc6/0x1e0 [ 603.219609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.219609][ T72] [ 603.221986][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 603.222256][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 603.222256][ T72] netdev_get_by_index+0x5e/0x80 [ 603.222256][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.222256][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.222256][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.222256][ T72] ipv6_add_addr+0x411/0x2000 [ 603.222256][ T72] inet6_addr_add+0x30e/0xa40 [ 603.222256][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.222256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.222256][ T72] netlink_rcv_skb+0x130/0x360 [ 603.222256][ T72] netlink_unicast+0x449/0x710 [ 603.222256][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.222256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.222256][ T72] ___sys_sendmsg+0xee/0x170 [ 603.222256][ T72] __sys_sendmsg+0xcd/0x170 [ 603.222256][ T72] do_syscall_64+0xc6/0x1e0 [ 603.222256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.222256][ T72] [ 603.224254][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 603.224254][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.224254][ T72] ipv6_find_idev+0x102/0x170 [ 603.224254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.224254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.224254][ T72] netlink_rcv_skb+0x130/0x360 [ 603.224254][ T72] netlink_unicast+0x449/0x710 [ 603.224254][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.224254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.224254][ T72] ___sys_sendmsg+0xee/0x170 [ 603.224254][ T72] __sys_sendmsg+0xcd/0x170 [ 603.224254][ T72] do_syscall_64+0xc6/0x1e0 [ 603.224254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.224254][ T72] [ 603.225805][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 603.225805][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.225805][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.225805][ T72] ipv6_find_idev+0x102/0x170 [ 603.225805][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.225805][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.225805][ T72] netlink_rcv_skb+0x130/0x360 [ 603.225805][ T72] netlink_unicast+0x449/0x710 [ 603.225805][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.225805][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.225805][ T72] ___sys_sendmsg+0xee/0x170 [ 603.225805][ T72] __sys_sendmsg+0xcd/0x170 [ 603.225805][ T72] do_syscall_64+0xc6/0x1e0 [ 603.225805][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.225805][ T72] [ 603.227536][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 603.227854][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 603.227854][ T72] netdev_get_by_index+0x5e/0x80 [ 603.227854][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.227854][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.227854][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.227854][ T72] ipv6_add_addr+0x411/0x2000 [ 603.227854][ T72] inet6_addr_add+0x30e/0xa40 [ 603.227854][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.227854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.227854][ T72] netlink_rcv_skb+0x130/0x360 [ 603.227854][ T72] netlink_unicast+0x449/0x710 [ 603.227854][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.227854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.227854][ T72] ___sys_sendmsg+0xee/0x170 [ 603.227854][ T72] __sys_sendmsg+0xcd/0x170 [ 603.227854][ T72] do_syscall_64+0xc6/0x1e0 [ 603.227854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.227854][ T72] [ 603.229934][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 603.229934][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.229934][ T72] ipv6_find_idev+0x102/0x170 [ 603.229934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.229934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.229934][ T72] netlink_rcv_skb+0x130/0x360 [ 603.229934][ T72] netlink_unicast+0x449/0x710 [ 603.229934][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.229934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.229934][ T72] ___sys_sendmsg+0xee/0x170 [ 603.229934][ T72] __sys_sendmsg+0xcd/0x170 [ 603.229934][ T72] do_syscall_64+0xc6/0x1e0 [ 603.229934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.229934][ T72] [ 603.231628][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 603.231628][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.231628][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.231628][ T72] ipv6_find_idev+0x102/0x170 [ 603.231628][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.231628][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.231628][ T72] netlink_rcv_skb+0x130/0x360 [ 603.231628][ T72] netlink_unicast+0x449/0x710 [ 603.231628][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.231628][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.231628][ T72] ___sys_sendmsg+0xee/0x170 [ 603.231628][ T72] __sys_sendmsg+0xcd/0x170 [ 603.231628][ T72] do_syscall_64+0xc6/0x1e0 [ 603.231628][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.231628][ T72] [ 603.233414][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 603.233681][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 603.233681][ T72] netdev_get_by_index+0x5e/0x80 [ 603.233681][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.233681][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.233681][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.233681][ T72] ipv6_add_addr+0x411/0x2000 [ 603.233681][ T72] inet6_addr_add+0x30e/0xa40 [ 603.233681][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.233681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.233681][ T72] netlink_rcv_skb+0x130/0x360 [ 603.233681][ T72] netlink_unicast+0x449/0x710 [ 603.233681][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.233681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.233681][ T72] ___sys_sendmsg+0xee/0x170 [ 603.233681][ T72] __sys_sendmsg+0xcd/0x170 [ 603.233681][ T72] do_syscall_64+0xc6/0x1e0 [ 603.233681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.233681][ T72] [ 603.235822][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 603.235822][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.235822][ T72] ipv6_find_idev+0x102/0x170 [ 603.235822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.235822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.235822][ T72] netlink_rcv_skb+0x130/0x360 [ 603.235822][ T72] netlink_unicast+0x449/0x710 [ 603.235822][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.235822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.235822][ T72] ___sys_sendmsg+0xee/0x170 [ 603.235822][ T72] __sys_sendmsg+0xcd/0x170 [ 603.235822][ T72] do_syscall_64+0xc6/0x1e0 [ 603.235822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.235822][ T72] [ 603.237504][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 603.237504][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.237504][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.237504][ T72] ipv6_find_idev+0x102/0x170 [ 603.237504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.237504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.237504][ T72] netlink_rcv_skb+0x130/0x360 [ 603.237504][ T72] netlink_unicast+0x449/0x710 [ 603.237504][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.237504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.237504][ T72] ___sys_sendmsg+0xee/0x170 [ 603.237504][ T72] __sys_sendmsg+0xcd/0x170 [ 603.237504][ T72] do_syscall_64+0xc6/0x1e0 [ 603.237504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.237504][ T72] [ 603.239433][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 603.239705][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 603.239705][ T72] netdev_get_by_index+0x5e/0x80 [ 603.239705][ T72] fib6_nh_init+0x3d8/0x15b0 [ 603.239705][ T72] ip6_route_info_create+0xf18/0x17d0 [ 603.239705][ T72] addrconf_f6i_alloc+0x244/0x410 [ 603.239705][ T72] ipv6_add_addr+0x411/0x2000 [ 603.239705][ T72] inet6_addr_add+0x30e/0xa40 [ 603.239705][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 603.239705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.239705][ T72] netlink_rcv_skb+0x130/0x360 [ 603.239705][ T72] netlink_unicast+0x449/0x710 [ 603.239705][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.239705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.239705][ T72] ___sys_sendmsg+0xee/0x170 [ 603.239705][ T72] __sys_sendmsg+0xcd/0x170 [ 603.239705][ T72] do_syscall_64+0xc6/0x1e0 [ 603.239705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.239705][ T72] [ 603.241870][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 603.241870][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 603.241870][ T72] ipv6_find_idev+0x102/0x170 [ 603.241870][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.241870][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.241870][ T72] netlink_rcv_skb+0x130/0x360 [ 603.241870][ T72] netlink_unicast+0x449/0x710 [ 603.241870][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.241870][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.241870][ T72] ___sys_sendmsg+0xee/0x170 [ 603.241870][ T72] __sys_sendmsg+0xcd/0x170 [ 603.241870][ T72] do_syscall_64+0xc6/0x1e0 [ 603.241870][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.241870][ T72] [ 603.243588][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 603.243588][ T72] neigh_parms_alloc+0x1e5/0x510 [ 603.243588][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 603.243588][ T72] ipv6_find_idev+0x102/0x170 [ 603.243588][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 603.243588][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 603.243588][ T72] netlink_rcv_skb+0x130/0x360 [ 603.243588][ T72] netlink_unicast+0x449/0x710 [ 603.243588][ T72] netlink_sendmsg+0x723/0xbe0 [ 603.243588][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 603.243588][ T72] ___sys_sendmsg+0xee/0x170 [ 603.243588][ T72] __sys_sendmsg+0xcd/0x170 [ 603.243588][ T72] do_syscall_64+0xc6/0x1e0 [ 603.243588][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 603.243588][ T72] [ 613.246930][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 613.247379][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 613.247379][ T72] netdev_get_by_index+0x5e/0x80 [ 613.247379][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.247379][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.247379][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.247379][ T72] ipv6_add_addr+0x411/0x2000 [ 613.247379][ T72] inet6_addr_add+0x30e/0xa40 [ 613.247379][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.247379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.247379][ T72] netlink_rcv_skb+0x130/0x360 [ 613.247379][ T72] netlink_unicast+0x449/0x710 [ 613.247379][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.247379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.247379][ T72] ___sys_sendmsg+0xee/0x170 [ 613.247379][ T72] __sys_sendmsg+0xcd/0x170 [ 613.247379][ T72] do_syscall_64+0xc6/0x1e0 [ 613.247379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.247379][ T72] [ 613.249402][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 613.249402][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.249402][ T72] ipv6_find_idev+0x102/0x170 [ 613.249402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.249402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.249402][ T72] netlink_rcv_skb+0x130/0x360 [ 613.249402][ T72] netlink_unicast+0x449/0x710 [ 613.249402][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.249402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.249402][ T72] ___sys_sendmsg+0xee/0x170 [ 613.249402][ T72] __sys_sendmsg+0xcd/0x170 [ 613.249402][ T72] do_syscall_64+0xc6/0x1e0 [ 613.249402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.249402][ T72] [ 613.250948][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 613.250948][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.250948][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.250948][ T72] ipv6_find_idev+0x102/0x170 [ 613.250948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.250948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.250948][ T72] netlink_rcv_skb+0x130/0x360 [ 613.250948][ T72] netlink_unicast+0x449/0x710 [ 613.250948][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.250948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.250948][ T72] ___sys_sendmsg+0xee/0x170 [ 613.250948][ T72] __sys_sendmsg+0xcd/0x170 [ 613.250948][ T72] do_syscall_64+0xc6/0x1e0 [ 613.250948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.250948][ T72] [ 613.252660][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 613.252953][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 613.252953][ T72] netdev_get_by_index+0x5e/0x80 [ 613.252953][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.252953][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.252953][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.252953][ T72] ipv6_add_addr+0x411/0x2000 [ 613.252953][ T72] inet6_addr_add+0x30e/0xa40 [ 613.252953][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.252953][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.252953][ T72] netlink_rcv_skb+0x130/0x360 [ 613.252953][ T72] netlink_unicast+0x449/0x710 [ 613.252953][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.252953][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.252953][ T72] ___sys_sendmsg+0xee/0x170 [ 613.252953][ T72] __sys_sendmsg+0xcd/0x170 [ 613.252953][ T72] do_syscall_64+0xc6/0x1e0 [ 613.252953][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.252953][ T72] [ 613.254943][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 613.254943][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.254943][ T72] ipv6_find_idev+0x102/0x170 [ 613.254943][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.254943][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.254943][ T72] netlink_rcv_skb+0x130/0x360 [ 613.254943][ T72] netlink_unicast+0x449/0x710 [ 613.254943][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.254943][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.254943][ T72] ___sys_sendmsg+0xee/0x170 [ 613.254943][ T72] __sys_sendmsg+0xcd/0x170 [ 613.254943][ T72] do_syscall_64+0xc6/0x1e0 [ 613.254943][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.254943][ T72] [ 613.256486][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 613.256486][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.256486][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.256486][ T72] ipv6_find_idev+0x102/0x170 [ 613.256486][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.256486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.256486][ T72] netlink_rcv_skb+0x130/0x360 [ 613.256486][ T72] netlink_unicast+0x449/0x710 [ 613.256486][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.256486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.256486][ T72] ___sys_sendmsg+0xee/0x170 [ 613.256486][ T72] __sys_sendmsg+0xcd/0x170 [ 613.256486][ T72] do_syscall_64+0xc6/0x1e0 [ 613.256486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.256486][ T72] [ 613.258182][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 613.258451][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 613.258451][ T72] netdev_get_by_index+0x5e/0x80 [ 613.258451][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.258451][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.258451][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.258451][ T72] ipv6_add_addr+0x411/0x2000 [ 613.258451][ T72] inet6_addr_add+0x30e/0xa40 [ 613.258451][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.258451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.258451][ T72] netlink_rcv_skb+0x130/0x360 [ 613.258451][ T72] netlink_unicast+0x449/0x710 [ 613.258451][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.258451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.258451][ T72] ___sys_sendmsg+0xee/0x170 [ 613.258451][ T72] __sys_sendmsg+0xcd/0x170 [ 613.258451][ T72] do_syscall_64+0xc6/0x1e0 [ 613.258451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.258451][ T72] [ 613.260448][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 613.260448][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.260448][ T72] ipv6_find_idev+0x102/0x170 [ 613.260448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.260448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.260448][ T72] netlink_rcv_skb+0x130/0x360 [ 613.260448][ T72] netlink_unicast+0x449/0x710 [ 613.260448][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.260448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.260448][ T72] ___sys_sendmsg+0xee/0x170 [ 613.260448][ T72] __sys_sendmsg+0xcd/0x170 [ 613.260448][ T72] do_syscall_64+0xc6/0x1e0 [ 613.260448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.260448][ T72] [ 613.261990][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 613.261990][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.261990][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.261990][ T72] ipv6_find_idev+0x102/0x170 [ 613.261990][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.261990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.261990][ T72] netlink_rcv_skb+0x130/0x360 [ 613.261990][ T72] netlink_unicast+0x449/0x710 [ 613.261990][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.261990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.261990][ T72] ___sys_sendmsg+0xee/0x170 [ 613.261990][ T72] __sys_sendmsg+0xcd/0x170 [ 613.261990][ T72] do_syscall_64+0xc6/0x1e0 [ 613.261990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.261990][ T72] [ 613.264097][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 613.264693][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 613.264693][ T72] netdev_get_by_index+0x5e/0x80 [ 613.264693][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.264693][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.264693][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.264693][ T72] ipv6_add_addr+0x411/0x2000 [ 613.264693][ T72] inet6_addr_add+0x30e/0xa40 [ 613.264693][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.264693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.264693][ T72] netlink_rcv_skb+0x130/0x360 [ 613.264693][ T72] netlink_unicast+0x449/0x710 [ 613.264693][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.264693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.264693][ T72] ___sys_sendmsg+0xee/0x170 [ 613.264693][ T72] __sys_sendmsg+0xcd/0x170 [ 613.264693][ T72] do_syscall_64+0xc6/0x1e0 [ 613.264693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.264693][ T72] [ 613.266684][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 613.266684][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.266684][ T72] ipv6_find_idev+0x102/0x170 [ 613.266684][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.266684][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.266684][ T72] netlink_rcv_skb+0x130/0x360 [ 613.266684][ T72] netlink_unicast+0x449/0x710 [ 613.266684][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.266684][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.266684][ T72] ___sys_sendmsg+0xee/0x170 [ 613.266684][ T72] __sys_sendmsg+0xcd/0x170 [ 613.266684][ T72] do_syscall_64+0xc6/0x1e0 [ 613.266684][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.266684][ T72] [ 613.268228][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 613.268228][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.268228][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.268228][ T72] ipv6_find_idev+0x102/0x170 [ 613.268228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.268228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.268228][ T72] netlink_rcv_skb+0x130/0x360 [ 613.268228][ T72] netlink_unicast+0x449/0x710 [ 613.268228][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.268228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.268228][ T72] ___sys_sendmsg+0xee/0x170 [ 613.268228][ T72] __sys_sendmsg+0xcd/0x170 [ 613.268228][ T72] do_syscall_64+0xc6/0x1e0 [ 613.268228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.268228][ T72] [ 613.269912][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 613.270182][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 613.270182][ T72] netdev_get_by_index+0x5e/0x80 [ 613.270182][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.270182][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.270182][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.270182][ T72] ipv6_add_addr+0x411/0x2000 [ 613.270182][ T72] inet6_addr_add+0x30e/0xa40 [ 613.270182][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.270182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.270182][ T72] netlink_rcv_skb+0x130/0x360 [ 613.270182][ T72] netlink_unicast+0x449/0x710 [ 613.270182][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.270182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.270182][ T72] ___sys_sendmsg+0xee/0x170 [ 613.270182][ T72] __sys_sendmsg+0xcd/0x170 [ 613.270182][ T72] do_syscall_64+0xc6/0x1e0 [ 613.270182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.270182][ T72] [ 613.272201][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 613.272201][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.272201][ T72] ipv6_find_idev+0x102/0x170 [ 613.272201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.272201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.272201][ T72] netlink_rcv_skb+0x130/0x360 [ 613.272201][ T72] netlink_unicast+0x449/0x710 [ 613.272201][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.272201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.272201][ T72] ___sys_sendmsg+0xee/0x170 [ 613.272201][ T72] __sys_sendmsg+0xcd/0x170 [ 613.272201][ T72] do_syscall_64+0xc6/0x1e0 [ 613.272201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.272201][ T72] [ 613.273736][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 613.273736][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.273736][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.273736][ T72] ipv6_find_idev+0x102/0x170 [ 613.273736][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.273736][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.273736][ T72] netlink_rcv_skb+0x130/0x360 [ 613.273736][ T72] netlink_unicast+0x449/0x710 [ 613.273736][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.273736][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.273736][ T72] ___sys_sendmsg+0xee/0x170 [ 613.273736][ T72] __sys_sendmsg+0xcd/0x170 [ 613.273736][ T72] do_syscall_64+0xc6/0x1e0 [ 613.273736][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.273736][ T72] [ 613.275472][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 613.275832][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 613.275832][ T72] netdev_get_by_index+0x5e/0x80 [ 613.275832][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.275832][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.275832][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.275832][ T72] ipv6_add_addr+0x411/0x2000 [ 613.275832][ T72] inet6_addr_add+0x30e/0xa40 [ 613.275832][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.275832][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.275832][ T72] netlink_rcv_skb+0x130/0x360 [ 613.275832][ T72] netlink_unicast+0x449/0x710 [ 613.275832][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.275832][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.275832][ T72] ___sys_sendmsg+0xee/0x170 [ 613.275832][ T72] __sys_sendmsg+0xcd/0x170 [ 613.275832][ T72] do_syscall_64+0xc6/0x1e0 [ 613.275832][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.275832][ T72] [ 613.277827][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 613.277827][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.277827][ T72] ipv6_find_idev+0x102/0x170 [ 613.277827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.277827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.277827][ T72] netlink_rcv_skb+0x130/0x360 [ 613.277827][ T72] netlink_unicast+0x449/0x710 [ 613.277827][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.277827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.277827][ T72] ___sys_sendmsg+0xee/0x170 [ 613.277827][ T72] __sys_sendmsg+0xcd/0x170 [ 613.277827][ T72] do_syscall_64+0xc6/0x1e0 [ 613.277827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.277827][ T72] [ 613.279388][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 613.279388][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.279388][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.279388][ T72] ipv6_find_idev+0x102/0x170 [ 613.279388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.279388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.279388][ T72] netlink_rcv_skb+0x130/0x360 [ 613.279388][ T72] netlink_unicast+0x449/0x710 [ 613.279388][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.279388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.279388][ T72] ___sys_sendmsg+0xee/0x170 [ 613.279388][ T72] __sys_sendmsg+0xcd/0x170 [ 613.279388][ T72] do_syscall_64+0xc6/0x1e0 [ 613.279388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.279388][ T72] [ 613.281249][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 613.281560][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 613.281560][ T72] netdev_get_by_index+0x5e/0x80 [ 613.281560][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.281560][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.281560][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.281560][ T72] ipv6_add_addr+0x411/0x2000 [ 613.281560][ T72] inet6_addr_add+0x30e/0xa40 [ 613.281560][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.281560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.281560][ T72] netlink_rcv_skb+0x130/0x360 [ 613.281560][ T72] netlink_unicast+0x449/0x710 [ 613.281560][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.281560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.281560][ T72] ___sys_sendmsg+0xee/0x170 [ 613.281560][ T72] __sys_sendmsg+0xcd/0x170 [ 613.281560][ T72] do_syscall_64+0xc6/0x1e0 [ 613.281560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.281560][ T72] [ 613.283799][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 613.283799][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.283799][ T72] ipv6_find_idev+0x102/0x170 [ 613.283799][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.283799][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.283799][ T72] netlink_rcv_skb+0x130/0x360 [ 613.283799][ T72] netlink_unicast+0x449/0x710 [ 613.283799][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.283799][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.283799][ T72] ___sys_sendmsg+0xee/0x170 [ 613.283799][ T72] __sys_sendmsg+0xcd/0x170 [ 613.283799][ T72] do_syscall_64+0xc6/0x1e0 [ 613.283799][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.283799][ T72] [ 613.285509][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 613.285509][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.285509][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.285509][ T72] ipv6_find_idev+0x102/0x170 [ 613.285509][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.285509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.285509][ T72] netlink_rcv_skb+0x130/0x360 [ 613.285509][ T72] netlink_unicast+0x449/0x710 [ 613.285509][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.285509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.285509][ T72] ___sys_sendmsg+0xee/0x170 [ 613.285509][ T72] __sys_sendmsg+0xcd/0x170 [ 613.285509][ T72] do_syscall_64+0xc6/0x1e0 [ 613.285509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.285509][ T72] [ 613.287613][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 613.287949][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 613.287949][ T72] netdev_get_by_index+0x5e/0x80 [ 613.287949][ T72] fib6_nh_init+0x3d8/0x15b0 [ 613.287949][ T72] ip6_route_info_create+0xf18/0x17d0 [ 613.287949][ T72] addrconf_f6i_alloc+0x244/0x410 [ 613.287949][ T72] ipv6_add_addr+0x411/0x2000 [ 613.287949][ T72] inet6_addr_add+0x30e/0xa40 [ 613.287949][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 613.287949][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.287949][ T72] netlink_rcv_skb+0x130/0x360 [ 613.287949][ T72] netlink_unicast+0x449/0x710 [ 613.287949][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.287949][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.287949][ T72] ___sys_sendmsg+0xee/0x170 [ 613.287949][ T72] __sys_sendmsg+0xcd/0x170 [ 613.287949][ T72] do_syscall_64+0xc6/0x1e0 [ 613.287949][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.287949][ T72] [ 613.290283][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 613.290283][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 613.290283][ T72] ipv6_find_idev+0x102/0x170 [ 613.290283][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.290283][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.290283][ T72] netlink_rcv_skb+0x130/0x360 [ 613.290283][ T72] netlink_unicast+0x449/0x710 [ 613.290283][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.290283][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.290283][ T72] ___sys_sendmsg+0xee/0x170 [ 613.290283][ T72] __sys_sendmsg+0xcd/0x170 [ 613.290283][ T72] do_syscall_64+0xc6/0x1e0 [ 613.290283][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.290283][ T72] [ 613.292584][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 613.292584][ T72] neigh_parms_alloc+0x1e5/0x510 [ 613.292584][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 613.292584][ T72] ipv6_find_idev+0x102/0x170 [ 613.292584][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 613.292584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 613.292584][ T72] netlink_rcv_skb+0x130/0x360 [ 613.292584][ T72] netlink_unicast+0x449/0x710 [ 613.292584][ T72] netlink_sendmsg+0x723/0xbe0 [ 613.292584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 613.292584][ T72] ___sys_sendmsg+0xee/0x170 [ 613.292584][ T72] __sys_sendmsg+0xcd/0x170 [ 613.292584][ T72] do_syscall_64+0xc6/0x1e0 [ 613.292584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 613.292584][ T72] [ 615.718894][ T42] INFO: task modprobe:1060 blocked for more than 368 seconds. [ 615.719208][ T42] Not tainted 6.8.0-virtme #1 [ 615.719363][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 615.719602][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 615.719902][ T42] Call Trace: [ 615.720002][ T42] [ 615.720077][ T42] __schedule+0x705/0x1ac0 [ 615.720216][ T42] ? __pfx___schedule+0x10/0x10 [ 615.720345][ T42] ? schedule+0x1a5/0x210 [ 615.720457][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 615.720596][ T42] ? mark_lock+0x38/0x3e0 [ 615.720697][ T42] ? do_raw_spin_lock+0x131/0x270 [ 615.720847][ T42] ? schedule+0x1a5/0x210 [ 615.720948][ T42] schedule+0xdf/0x210 [ 615.721046][ T42] schedule_preempt_disabled+0x15/0x30 [ 615.721174][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 615.721316][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 615.721472][ T42] ? kasan_save_stack+0x34/0x50 [ 615.721605][ T42] ? kasan_save_stack+0x24/0x50 [ 615.721747][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 615.721895][ T42] ? lock_acquire+0x1c1/0x220 [ 615.722020][ T42] ? register_pernet_subsys+0x1a/0x50 [ 615.722545][ T42] down_write+0x1c9/0x200 [ 615.722644][ T42] ? __pfx_down_write+0x10/0x10 [ 615.722788][ T42] ? __pfx___lock_release+0x10/0x10 [ 615.722921][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 615.723129][ T42] register_pernet_subsys+0x1a/0x50 [ 615.723261][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 615.723448][ T42] do_one_initcall+0xc8/0x3f0 [ 615.723578][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 615.723708][ T42] ? __create_object+0x5e/0xb0 [ 615.723865][ T42] ? kasan_unpoison+0x27/0x60 [ 615.724002][ T42] do_init_module+0x233/0x740 [ 615.724141][ T42] load_module+0x16b5/0x2350 [ 615.724281][ T42] ? __pfx_load_module+0x10/0x10 [ 615.724414][ T42] ? kernel_read_file+0x3d2/0x520 [ 615.724556][ T42] ? kernel_read_file+0x300/0x520 [ 615.724693][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 615.724840][ T42] ? init_module_from_file+0xd2/0x130 [ 615.724966][ T42] init_module_from_file+0xd2/0x130 [ 615.725096][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 615.725256][ T42] ? __lock_release+0x103/0x460 [ 615.725382][ T42] ? idempotent_init_module+0x32a/0x620 [ 615.725522][ T42] ? idempotent_init_module+0x32a/0x620 [ 615.725653][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 615.725798][ T42] idempotent_init_module+0x342/0x620 [ 615.725928][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 615.726105][ T42] __x64_sys_finit_module+0xbe/0x130 [ 615.726236][ T42] do_syscall_64+0xc6/0x1e0 [ 615.726366][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 615.726525][ T42] RIP: 0033:0x7f69f7397e5d [ 615.726660][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 615.726866][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 615.727055][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 615.727248][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 615.727441][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 615.727656][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 615.727883][ T42] [ 615.727983][ T42] [ 615.727983][ T42] Showing all locks held in the system: [ 615.728176][ T42] 1 lock held by khungtaskd/42: [ 615.728299][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 615.728533][ T42] 2 locks held by kworker/u20:1/60: [ 615.728662][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 615.728927][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 615.729215][ T42] 3 locks held by kworker/u16:1/72: [ 615.729344][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 615.729602][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 615.729837][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 615.730066][ T42] 1 lock held by modprobe/1060: [ 615.730195][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 615.730454][ T42] [ 615.730520][ T42] ============================================= [ 615.730520][ T42] [ 623.534903][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 623.535377][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 623.535377][ T72] netdev_get_by_index+0x5e/0x80 [ 623.535377][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.535377][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.535377][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.535377][ T72] ipv6_add_addr+0x411/0x2000 [ 623.535377][ T72] inet6_addr_add+0x30e/0xa40 [ 623.535377][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.535377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.535377][ T72] netlink_rcv_skb+0x130/0x360 [ 623.535377][ T72] netlink_unicast+0x449/0x710 [ 623.535377][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.535377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.535377][ T72] ___sys_sendmsg+0xee/0x170 [ 623.535377][ T72] __sys_sendmsg+0xcd/0x170 [ 623.535377][ T72] do_syscall_64+0xc6/0x1e0 [ 623.535377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.535377][ T72] [ 623.537442][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 623.537442][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.537442][ T72] ipv6_find_idev+0x102/0x170 [ 623.537442][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.537442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.537442][ T72] netlink_rcv_skb+0x130/0x360 [ 623.537442][ T72] netlink_unicast+0x449/0x710 [ 623.537442][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.537442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.537442][ T72] ___sys_sendmsg+0xee/0x170 [ 623.537442][ T72] __sys_sendmsg+0xcd/0x170 [ 623.537442][ T72] do_syscall_64+0xc6/0x1e0 [ 623.537442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.537442][ T72] [ 623.539018][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 623.539018][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.539018][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.539018][ T72] ipv6_find_idev+0x102/0x170 [ 623.539018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.539018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.539018][ T72] netlink_rcv_skb+0x130/0x360 [ 623.539018][ T72] netlink_unicast+0x449/0x710 [ 623.539018][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.539018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.539018][ T72] ___sys_sendmsg+0xee/0x170 [ 623.539018][ T72] __sys_sendmsg+0xcd/0x170 [ 623.539018][ T72] do_syscall_64+0xc6/0x1e0 [ 623.539018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.539018][ T72] [ 623.540765][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 623.541052][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 623.541052][ T72] netdev_get_by_index+0x5e/0x80 [ 623.541052][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.541052][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.541052][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.541052][ T72] ipv6_add_addr+0x411/0x2000 [ 623.541052][ T72] inet6_addr_add+0x30e/0xa40 [ 623.541052][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.541052][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.541052][ T72] netlink_rcv_skb+0x130/0x360 [ 623.541052][ T72] netlink_unicast+0x449/0x710 [ 623.541052][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.541052][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.541052][ T72] ___sys_sendmsg+0xee/0x170 [ 623.541052][ T72] __sys_sendmsg+0xcd/0x170 [ 623.541052][ T72] do_syscall_64+0xc6/0x1e0 [ 623.541052][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.541052][ T72] [ 623.543055][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 623.543055][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.543055][ T72] ipv6_find_idev+0x102/0x170 [ 623.543055][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.543055][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.543055][ T72] netlink_rcv_skb+0x130/0x360 [ 623.543055][ T72] netlink_unicast+0x449/0x710 [ 623.543055][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.543055][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.543055][ T72] ___sys_sendmsg+0xee/0x170 [ 623.543055][ T72] __sys_sendmsg+0xcd/0x170 [ 623.543055][ T72] do_syscall_64+0xc6/0x1e0 [ 623.543055][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.543055][ T72] [ 623.544603][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 623.544603][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.544603][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.544603][ T72] ipv6_find_idev+0x102/0x170 [ 623.544603][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.544603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.544603][ T72] netlink_rcv_skb+0x130/0x360 [ 623.544603][ T72] netlink_unicast+0x449/0x710 [ 623.544603][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.544603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.544603][ T72] ___sys_sendmsg+0xee/0x170 [ 623.544603][ T72] __sys_sendmsg+0xcd/0x170 [ 623.544603][ T72] do_syscall_64+0xc6/0x1e0 [ 623.544603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.544603][ T72] [ 623.546294][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 623.546562][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 623.546562][ T72] netdev_get_by_index+0x5e/0x80 [ 623.546562][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.546562][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.546562][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.546562][ T72] ipv6_add_addr+0x411/0x2000 [ 623.546562][ T72] inet6_addr_add+0x30e/0xa40 [ 623.546562][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.546562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.546562][ T72] netlink_rcv_skb+0x130/0x360 [ 623.546562][ T72] netlink_unicast+0x449/0x710 [ 623.546562][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.546562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.546562][ T72] ___sys_sendmsg+0xee/0x170 [ 623.546562][ T72] __sys_sendmsg+0xcd/0x170 [ 623.546562][ T72] do_syscall_64+0xc6/0x1e0 [ 623.546562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.546562][ T72] [ 623.548584][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 623.548584][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.548584][ T72] ipv6_find_idev+0x102/0x170 [ 623.548584][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.548584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.548584][ T72] netlink_rcv_skb+0x130/0x360 [ 623.548584][ T72] netlink_unicast+0x449/0x710 [ 623.548584][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.548584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.548584][ T72] ___sys_sendmsg+0xee/0x170 [ 623.548584][ T72] __sys_sendmsg+0xcd/0x170 [ 623.548584][ T72] do_syscall_64+0xc6/0x1e0 [ 623.548584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.548584][ T72] [ 623.550135][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 623.550135][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.550135][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.550135][ T72] ipv6_find_idev+0x102/0x170 [ 623.550135][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.550135][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.550135][ T72] netlink_rcv_skb+0x130/0x360 [ 623.550135][ T72] netlink_unicast+0x449/0x710 [ 623.550135][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.550135][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.550135][ T72] ___sys_sendmsg+0xee/0x170 [ 623.550135][ T72] __sys_sendmsg+0xcd/0x170 [ 623.550135][ T72] do_syscall_64+0xc6/0x1e0 [ 623.550135][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.550135][ T72] [ 623.551827][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 623.552104][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 623.552104][ T72] netdev_get_by_index+0x5e/0x80 [ 623.552104][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.552104][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.552104][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.552104][ T72] ipv6_add_addr+0x411/0x2000 [ 623.552104][ T72] inet6_addr_add+0x30e/0xa40 [ 623.552104][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.552104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.552104][ T72] netlink_rcv_skb+0x130/0x360 [ 623.552104][ T72] netlink_unicast+0x449/0x710 [ 623.552104][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.552104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.552104][ T72] ___sys_sendmsg+0xee/0x170 [ 623.552104][ T72] __sys_sendmsg+0xcd/0x170 [ 623.552104][ T72] do_syscall_64+0xc6/0x1e0 [ 623.552104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.552104][ T72] [ 623.554099][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 623.554099][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.554099][ T72] ipv6_find_idev+0x102/0x170 [ 623.554099][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.554099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.554099][ T72] netlink_rcv_skb+0x130/0x360 [ 623.554099][ T72] netlink_unicast+0x449/0x710 [ 623.554099][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.554099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.554099][ T72] ___sys_sendmsg+0xee/0x170 [ 623.554099][ T72] __sys_sendmsg+0xcd/0x170 [ 623.554099][ T72] do_syscall_64+0xc6/0x1e0 [ 623.554099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.554099][ T72] [ 623.555640][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 623.555640][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.555640][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.555640][ T72] ipv6_find_idev+0x102/0x170 [ 623.555640][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.555640][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.555640][ T72] netlink_rcv_skb+0x130/0x360 [ 623.555640][ T72] netlink_unicast+0x449/0x710 [ 623.555640][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.555640][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.555640][ T72] ___sys_sendmsg+0xee/0x170 [ 623.555640][ T72] __sys_sendmsg+0xcd/0x170 [ 623.555640][ T72] do_syscall_64+0xc6/0x1e0 [ 623.555640][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.555640][ T72] [ 623.558059][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 623.558326][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 623.558326][ T72] netdev_get_by_index+0x5e/0x80 [ 623.558326][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.558326][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.558326][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.558326][ T72] ipv6_add_addr+0x411/0x2000 [ 623.558326][ T72] inet6_addr_add+0x30e/0xa40 [ 623.558326][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.558326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.558326][ T72] netlink_rcv_skb+0x130/0x360 [ 623.558326][ T72] netlink_unicast+0x449/0x710 [ 623.558326][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.558326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.558326][ T72] ___sys_sendmsg+0xee/0x170 [ 623.558326][ T72] __sys_sendmsg+0xcd/0x170 [ 623.558326][ T72] do_syscall_64+0xc6/0x1e0 [ 623.558326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.558326][ T72] [ 623.560322][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 623.560322][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.560322][ T72] ipv6_find_idev+0x102/0x170 [ 623.560322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.560322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.560322][ T72] netlink_rcv_skb+0x130/0x360 [ 623.560322][ T72] netlink_unicast+0x449/0x710 [ 623.560322][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.560322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.560322][ T72] ___sys_sendmsg+0xee/0x170 [ 623.560322][ T72] __sys_sendmsg+0xcd/0x170 [ 623.560322][ T72] do_syscall_64+0xc6/0x1e0 [ 623.560322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.560322][ T72] [ 623.561851][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 623.561851][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.561851][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.561851][ T72] ipv6_find_idev+0x102/0x170 [ 623.561851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.561851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.561851][ T72] netlink_rcv_skb+0x130/0x360 [ 623.561851][ T72] netlink_unicast+0x449/0x710 [ 623.561851][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.561851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.561851][ T72] ___sys_sendmsg+0xee/0x170 [ 623.561851][ T72] __sys_sendmsg+0xcd/0x170 [ 623.561851][ T72] do_syscall_64+0xc6/0x1e0 [ 623.561851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.561851][ T72] [ 623.563527][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 623.563846][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 623.563846][ T72] netdev_get_by_index+0x5e/0x80 [ 623.563846][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.563846][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.563846][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.563846][ T72] ipv6_add_addr+0x411/0x2000 [ 623.563846][ T72] inet6_addr_add+0x30e/0xa40 [ 623.563846][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.563846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.563846][ T72] netlink_rcv_skb+0x130/0x360 [ 623.563846][ T72] netlink_unicast+0x449/0x710 [ 623.563846][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.563846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.563846][ T72] ___sys_sendmsg+0xee/0x170 [ 623.563846][ T72] __sys_sendmsg+0xcd/0x170 [ 623.563846][ T72] do_syscall_64+0xc6/0x1e0 [ 623.563846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.563846][ T72] [ 623.565835][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 623.565835][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.565835][ T72] ipv6_find_idev+0x102/0x170 [ 623.565835][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.565835][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.565835][ T72] netlink_rcv_skb+0x130/0x360 [ 623.565835][ T72] netlink_unicast+0x449/0x710 [ 623.565835][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.565835][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.565835][ T72] ___sys_sendmsg+0xee/0x170 [ 623.565835][ T72] __sys_sendmsg+0xcd/0x170 [ 623.565835][ T72] do_syscall_64+0xc6/0x1e0 [ 623.565835][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.565835][ T72] [ 623.567373][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 623.567373][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.567373][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.567373][ T72] ipv6_find_idev+0x102/0x170 [ 623.567373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.567373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.567373][ T72] netlink_rcv_skb+0x130/0x360 [ 623.567373][ T72] netlink_unicast+0x449/0x710 [ 623.567373][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.567373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.567373][ T72] ___sys_sendmsg+0xee/0x170 [ 623.567373][ T72] __sys_sendmsg+0xcd/0x170 [ 623.567373][ T72] do_syscall_64+0xc6/0x1e0 [ 623.567373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.567373][ T72] [ 623.569359][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 623.569669][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 623.569669][ T72] netdev_get_by_index+0x5e/0x80 [ 623.569669][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.569669][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.569669][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.569669][ T72] ipv6_add_addr+0x411/0x2000 [ 623.569669][ T72] inet6_addr_add+0x30e/0xa40 [ 623.569669][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.569669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.569669][ T72] netlink_rcv_skb+0x130/0x360 [ 623.569669][ T72] netlink_unicast+0x449/0x710 [ 623.569669][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.569669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.569669][ T72] ___sys_sendmsg+0xee/0x170 [ 623.569669][ T72] __sys_sendmsg+0xcd/0x170 [ 623.569669][ T72] do_syscall_64+0xc6/0x1e0 [ 623.569669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.569669][ T72] [ 623.571841][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 623.571841][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.571841][ T72] ipv6_find_idev+0x102/0x170 [ 623.571841][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.571841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.571841][ T72] netlink_rcv_skb+0x130/0x360 [ 623.571841][ T72] netlink_unicast+0x449/0x710 [ 623.571841][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.571841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.571841][ T72] ___sys_sendmsg+0xee/0x170 [ 623.571841][ T72] __sys_sendmsg+0xcd/0x170 [ 623.571841][ T72] do_syscall_64+0xc6/0x1e0 [ 623.571841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.571841][ T72] [ 623.573612][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 623.573612][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.573612][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.573612][ T72] ipv6_find_idev+0x102/0x170 [ 623.573612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.573612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.573612][ T72] netlink_rcv_skb+0x130/0x360 [ 623.573612][ T72] netlink_unicast+0x449/0x710 [ 623.573612][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.573612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.573612][ T72] ___sys_sendmsg+0xee/0x170 [ 623.573612][ T72] __sys_sendmsg+0xcd/0x170 [ 623.573612][ T72] do_syscall_64+0xc6/0x1e0 [ 623.573612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.573612][ T72] [ 623.575519][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 623.575834][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 623.575834][ T72] netdev_get_by_index+0x5e/0x80 [ 623.575834][ T72] fib6_nh_init+0x3d8/0x15b0 [ 623.575834][ T72] ip6_route_info_create+0xf18/0x17d0 [ 623.575834][ T72] addrconf_f6i_alloc+0x244/0x410 [ 623.575834][ T72] ipv6_add_addr+0x411/0x2000 [ 623.575834][ T72] inet6_addr_add+0x30e/0xa40 [ 623.575834][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 623.575834][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.575834][ T72] netlink_rcv_skb+0x130/0x360 [ 623.575834][ T72] netlink_unicast+0x449/0x710 [ 623.575834][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.575834][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.575834][ T72] ___sys_sendmsg+0xee/0x170 [ 623.575834][ T72] __sys_sendmsg+0xcd/0x170 [ 623.575834][ T72] do_syscall_64+0xc6/0x1e0 [ 623.575834][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.575834][ T72] [ 623.578034][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 623.578034][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 623.578034][ T72] ipv6_find_idev+0x102/0x170 [ 623.578034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.578034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.578034][ T72] netlink_rcv_skb+0x130/0x360 [ 623.578034][ T72] netlink_unicast+0x449/0x710 [ 623.578034][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.578034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.578034][ T72] ___sys_sendmsg+0xee/0x170 [ 623.578034][ T72] __sys_sendmsg+0xcd/0x170 [ 623.578034][ T72] do_syscall_64+0xc6/0x1e0 [ 623.578034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.578034][ T72] [ 623.579753][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 623.579753][ T72] neigh_parms_alloc+0x1e5/0x510 [ 623.579753][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 623.579753][ T72] ipv6_find_idev+0x102/0x170 [ 623.579753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 623.579753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 623.579753][ T72] netlink_rcv_skb+0x130/0x360 [ 623.579753][ T72] netlink_unicast+0x449/0x710 [ 623.579753][ T72] netlink_sendmsg+0x723/0xbe0 [ 623.579753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 623.579753][ T72] ___sys_sendmsg+0xee/0x170 [ 623.579753][ T72] __sys_sendmsg+0xcd/0x170 [ 623.579753][ T72] do_syscall_64+0xc6/0x1e0 [ 623.579753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 623.579753][ T72] [ 633.822966][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 633.823456][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 633.823456][ T72] netdev_get_by_index+0x5e/0x80 [ 633.823456][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.823456][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.823456][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.823456][ T72] ipv6_add_addr+0x411/0x2000 [ 633.823456][ T72] inet6_addr_add+0x30e/0xa40 [ 633.823456][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.823456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.823456][ T72] netlink_rcv_skb+0x130/0x360 [ 633.823456][ T72] netlink_unicast+0x449/0x710 [ 633.823456][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.823456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.823456][ T72] ___sys_sendmsg+0xee/0x170 [ 633.823456][ T72] __sys_sendmsg+0xcd/0x170 [ 633.823456][ T72] do_syscall_64+0xc6/0x1e0 [ 633.823456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.823456][ T72] [ 633.825621][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 633.825621][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.825621][ T72] ipv6_find_idev+0x102/0x170 [ 633.825621][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.825621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.825621][ T72] netlink_rcv_skb+0x130/0x360 [ 633.825621][ T72] netlink_unicast+0x449/0x710 [ 633.825621][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.825621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.825621][ T72] ___sys_sendmsg+0xee/0x170 [ 633.825621][ T72] __sys_sendmsg+0xcd/0x170 [ 633.825621][ T72] do_syscall_64+0xc6/0x1e0 [ 633.825621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.825621][ T72] [ 633.827176][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 633.827176][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.827176][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.827176][ T72] ipv6_find_idev+0x102/0x170 [ 633.827176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.827176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.827176][ T72] netlink_rcv_skb+0x130/0x360 [ 633.827176][ T72] netlink_unicast+0x449/0x710 [ 633.827176][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.827176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.827176][ T72] ___sys_sendmsg+0xee/0x170 [ 633.827176][ T72] __sys_sendmsg+0xcd/0x170 [ 633.827176][ T72] do_syscall_64+0xc6/0x1e0 [ 633.827176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.827176][ T72] [ 633.828908][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 633.829186][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 633.829186][ T72] netdev_get_by_index+0x5e/0x80 [ 633.829186][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.829186][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.829186][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.829186][ T72] ipv6_add_addr+0x411/0x2000 [ 633.829186][ T72] inet6_addr_add+0x30e/0xa40 [ 633.829186][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.829186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.829186][ T72] netlink_rcv_skb+0x130/0x360 [ 633.829186][ T72] netlink_unicast+0x449/0x710 [ 633.829186][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.829186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.829186][ T72] ___sys_sendmsg+0xee/0x170 [ 633.829186][ T72] __sys_sendmsg+0xcd/0x170 [ 633.829186][ T72] do_syscall_64+0xc6/0x1e0 [ 633.829186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.829186][ T72] [ 633.831176][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 633.831176][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.831176][ T72] ipv6_find_idev+0x102/0x170 [ 633.831176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.831176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.831176][ T72] netlink_rcv_skb+0x130/0x360 [ 633.831176][ T72] netlink_unicast+0x449/0x710 [ 633.831176][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.831176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.831176][ T72] ___sys_sendmsg+0xee/0x170 [ 633.831176][ T72] __sys_sendmsg+0xcd/0x170 [ 633.831176][ T72] do_syscall_64+0xc6/0x1e0 [ 633.831176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.831176][ T72] [ 633.832713][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 633.832713][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.832713][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.832713][ T72] ipv6_find_idev+0x102/0x170 [ 633.832713][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.832713][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.832713][ T72] netlink_rcv_skb+0x130/0x360 [ 633.832713][ T72] netlink_unicast+0x449/0x710 [ 633.832713][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.832713][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.832713][ T72] ___sys_sendmsg+0xee/0x170 [ 633.832713][ T72] __sys_sendmsg+0xcd/0x170 [ 633.832713][ T72] do_syscall_64+0xc6/0x1e0 [ 633.832713][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.832713][ T72] [ 633.834409][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 633.834678][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 633.834678][ T72] netdev_get_by_index+0x5e/0x80 [ 633.834678][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.834678][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.834678][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.834678][ T72] ipv6_add_addr+0x411/0x2000 [ 633.834678][ T72] inet6_addr_add+0x30e/0xa40 [ 633.834678][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.834678][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.834678][ T72] netlink_rcv_skb+0x130/0x360 [ 633.834678][ T72] netlink_unicast+0x449/0x710 [ 633.834678][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.834678][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.834678][ T72] ___sys_sendmsg+0xee/0x170 [ 633.834678][ T72] __sys_sendmsg+0xcd/0x170 [ 633.834678][ T72] do_syscall_64+0xc6/0x1e0 [ 633.834678][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.834678][ T72] [ 633.836671][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 633.836671][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.836671][ T72] ipv6_find_idev+0x102/0x170 [ 633.836671][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.836671][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.836671][ T72] netlink_rcv_skb+0x130/0x360 [ 633.836671][ T72] netlink_unicast+0x449/0x710 [ 633.836671][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.836671][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.836671][ T72] ___sys_sendmsg+0xee/0x170 [ 633.836671][ T72] __sys_sendmsg+0xcd/0x170 [ 633.836671][ T72] do_syscall_64+0xc6/0x1e0 [ 633.836671][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.836671][ T72] [ 633.838233][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 633.838233][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.838233][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.838233][ T72] ipv6_find_idev+0x102/0x170 [ 633.838233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.838233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.838233][ T72] netlink_rcv_skb+0x130/0x360 [ 633.838233][ T72] netlink_unicast+0x449/0x710 [ 633.838233][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.838233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.838233][ T72] ___sys_sendmsg+0xee/0x170 [ 633.838233][ T72] __sys_sendmsg+0xcd/0x170 [ 633.838233][ T72] do_syscall_64+0xc6/0x1e0 [ 633.838233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.838233][ T72] [ 633.839923][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 633.840195][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 633.840195][ T72] netdev_get_by_index+0x5e/0x80 [ 633.840195][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.840195][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.840195][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.840195][ T72] ipv6_add_addr+0x411/0x2000 [ 633.840195][ T72] inet6_addr_add+0x30e/0xa40 [ 633.840195][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.840195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.840195][ T72] netlink_rcv_skb+0x130/0x360 [ 633.840195][ T72] netlink_unicast+0x449/0x710 [ 633.840195][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.840195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.840195][ T72] ___sys_sendmsg+0xee/0x170 [ 633.840195][ T72] __sys_sendmsg+0xcd/0x170 [ 633.840195][ T72] do_syscall_64+0xc6/0x1e0 [ 633.840195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.840195][ T72] [ 633.842200][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 633.842200][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.842200][ T72] ipv6_find_idev+0x102/0x170 [ 633.842200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.842200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.842200][ T72] netlink_rcv_skb+0x130/0x360 [ 633.842200][ T72] netlink_unicast+0x449/0x710 [ 633.842200][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.842200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.842200][ T72] ___sys_sendmsg+0xee/0x170 [ 633.842200][ T72] __sys_sendmsg+0xcd/0x170 [ 633.842200][ T72] do_syscall_64+0xc6/0x1e0 [ 633.842200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.842200][ T72] [ 633.843748][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 633.843748][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.843748][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.843748][ T72] ipv6_find_idev+0x102/0x170 [ 633.843748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.843748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.843748][ T72] netlink_rcv_skb+0x130/0x360 [ 633.843748][ T72] netlink_unicast+0x449/0x710 [ 633.843748][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.843748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.843748][ T72] ___sys_sendmsg+0xee/0x170 [ 633.843748][ T72] __sys_sendmsg+0xcd/0x170 [ 633.843748][ T72] do_syscall_64+0xc6/0x1e0 [ 633.843748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.843748][ T72] [ 633.845862][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 633.846472][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 633.846472][ T72] netdev_get_by_index+0x5e/0x80 [ 633.846472][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.846472][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.846472][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.846472][ T72] ipv6_add_addr+0x411/0x2000 [ 633.846472][ T72] inet6_addr_add+0x30e/0xa40 [ 633.846472][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.846472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.846472][ T72] netlink_rcv_skb+0x130/0x360 [ 633.846472][ T72] netlink_unicast+0x449/0x710 [ 633.846472][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.846472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.846472][ T72] ___sys_sendmsg+0xee/0x170 [ 633.846472][ T72] __sys_sendmsg+0xcd/0x170 [ 633.846472][ T72] do_syscall_64+0xc6/0x1e0 [ 633.846472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.846472][ T72] [ 633.848473][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 633.848473][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.848473][ T72] ipv6_find_idev+0x102/0x170 [ 633.848473][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.848473][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.848473][ T72] netlink_rcv_skb+0x130/0x360 [ 633.848473][ T72] netlink_unicast+0x449/0x710 [ 633.848473][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.848473][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.848473][ T72] ___sys_sendmsg+0xee/0x170 [ 633.848473][ T72] __sys_sendmsg+0xcd/0x170 [ 633.848473][ T72] do_syscall_64+0xc6/0x1e0 [ 633.848473][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.848473][ T72] [ 633.850025][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 633.850025][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.850025][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.850025][ T72] ipv6_find_idev+0x102/0x170 [ 633.850025][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.850025][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.850025][ T72] netlink_rcv_skb+0x130/0x360 [ 633.850025][ T72] netlink_unicast+0x449/0x710 [ 633.850025][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.850025][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.850025][ T72] ___sys_sendmsg+0xee/0x170 [ 633.850025][ T72] __sys_sendmsg+0xcd/0x170 [ 633.850025][ T72] do_syscall_64+0xc6/0x1e0 [ 633.850025][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.850025][ T72] [ 633.851711][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 633.852028][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 633.852028][ T72] netdev_get_by_index+0x5e/0x80 [ 633.852028][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.852028][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.852028][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.852028][ T72] ipv6_add_addr+0x411/0x2000 [ 633.852028][ T72] inet6_addr_add+0x30e/0xa40 [ 633.852028][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.852028][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.852028][ T72] netlink_rcv_skb+0x130/0x360 [ 633.852028][ T72] netlink_unicast+0x449/0x710 [ 633.852028][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.852028][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.852028][ T72] ___sys_sendmsg+0xee/0x170 [ 633.852028][ T72] __sys_sendmsg+0xcd/0x170 [ 633.852028][ T72] do_syscall_64+0xc6/0x1e0 [ 633.852028][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.852028][ T72] [ 633.854029][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 633.854029][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.854029][ T72] ipv6_find_idev+0x102/0x170 [ 633.854029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.854029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.854029][ T72] netlink_rcv_skb+0x130/0x360 [ 633.854029][ T72] netlink_unicast+0x449/0x710 [ 633.854029][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.854029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.854029][ T72] ___sys_sendmsg+0xee/0x170 [ 633.854029][ T72] __sys_sendmsg+0xcd/0x170 [ 633.854029][ T72] do_syscall_64+0xc6/0x1e0 [ 633.854029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.854029][ T72] [ 633.855571][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 633.855571][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.855571][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.855571][ T72] ipv6_find_idev+0x102/0x170 [ 633.855571][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.855571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.855571][ T72] netlink_rcv_skb+0x130/0x360 [ 633.855571][ T72] netlink_unicast+0x449/0x710 [ 633.855571][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.855571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.855571][ T72] ___sys_sendmsg+0xee/0x170 [ 633.855571][ T72] __sys_sendmsg+0xcd/0x170 [ 633.855571][ T72] do_syscall_64+0xc6/0x1e0 [ 633.855571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.855571][ T72] [ 633.857551][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 633.857874][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 633.857874][ T72] netdev_get_by_index+0x5e/0x80 [ 633.857874][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.857874][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.857874][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.857874][ T72] ipv6_add_addr+0x411/0x2000 [ 633.857874][ T72] inet6_addr_add+0x30e/0xa40 [ 633.857874][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.857874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.857874][ T72] netlink_rcv_skb+0x130/0x360 [ 633.857874][ T72] netlink_unicast+0x449/0x710 [ 633.857874][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.857874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.857874][ T72] ___sys_sendmsg+0xee/0x170 [ 633.857874][ T72] __sys_sendmsg+0xcd/0x170 [ 633.857874][ T72] do_syscall_64+0xc6/0x1e0 [ 633.857874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.857874][ T72] [ 633.860053][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 633.860053][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.860053][ T72] ipv6_find_idev+0x102/0x170 [ 633.860053][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.860053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.860053][ T72] netlink_rcv_skb+0x130/0x360 [ 633.860053][ T72] netlink_unicast+0x449/0x710 [ 633.860053][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.860053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.860053][ T72] ___sys_sendmsg+0xee/0x170 [ 633.860053][ T72] __sys_sendmsg+0xcd/0x170 [ 633.860053][ T72] do_syscall_64+0xc6/0x1e0 [ 633.860053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.860053][ T72] [ 633.861780][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 633.861780][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.861780][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.861780][ T72] ipv6_find_idev+0x102/0x170 [ 633.861780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.861780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.861780][ T72] netlink_rcv_skb+0x130/0x360 [ 633.861780][ T72] netlink_unicast+0x449/0x710 [ 633.861780][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.861780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.861780][ T72] ___sys_sendmsg+0xee/0x170 [ 633.861780][ T72] __sys_sendmsg+0xcd/0x170 [ 633.861780][ T72] do_syscall_64+0xc6/0x1e0 [ 633.861780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.861780][ T72] [ 633.863685][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 633.864003][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 633.864003][ T72] netdev_get_by_index+0x5e/0x80 [ 633.864003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 633.864003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 633.864003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 633.864003][ T72] ipv6_add_addr+0x411/0x2000 [ 633.864003][ T72] inet6_addr_add+0x30e/0xa40 [ 633.864003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 633.864003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.864003][ T72] netlink_rcv_skb+0x130/0x360 [ 633.864003][ T72] netlink_unicast+0x449/0x710 [ 633.864003][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.864003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.864003][ T72] ___sys_sendmsg+0xee/0x170 [ 633.864003][ T72] __sys_sendmsg+0xcd/0x170 [ 633.864003][ T72] do_syscall_64+0xc6/0x1e0 [ 633.864003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.864003][ T72] [ 633.866239][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 633.866239][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 633.866239][ T72] ipv6_find_idev+0x102/0x170 [ 633.866239][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.866239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.866239][ T72] netlink_rcv_skb+0x130/0x360 [ 633.866239][ T72] netlink_unicast+0x449/0x710 [ 633.866239][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.866239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.866239][ T72] ___sys_sendmsg+0xee/0x170 [ 633.866239][ T72] __sys_sendmsg+0xcd/0x170 [ 633.866239][ T72] do_syscall_64+0xc6/0x1e0 [ 633.866239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.866239][ T72] [ 633.867966][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 633.867966][ T72] neigh_parms_alloc+0x1e5/0x510 [ 633.867966][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 633.867966][ T72] ipv6_find_idev+0x102/0x170 [ 633.867966][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 633.867966][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 633.867966][ T72] netlink_rcv_skb+0x130/0x360 [ 633.867966][ T72] netlink_unicast+0x449/0x710 [ 633.867966][ T72] netlink_sendmsg+0x723/0xbe0 [ 633.867966][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 633.867966][ T72] ___sys_sendmsg+0xee/0x170 [ 633.867966][ T72] __sys_sendmsg+0xcd/0x170 [ 633.867966][ T72] do_syscall_64+0xc6/0x1e0 [ 633.867966][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 633.867966][ T72] [ 644.110908][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 644.111400][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 644.111400][ T72] netdev_get_by_index+0x5e/0x80 [ 644.111400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.111400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.111400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.111400][ T72] ipv6_add_addr+0x411/0x2000 [ 644.111400][ T72] inet6_addr_add+0x30e/0xa40 [ 644.111400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.111400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.111400][ T72] netlink_rcv_skb+0x130/0x360 [ 644.111400][ T72] netlink_unicast+0x449/0x710 [ 644.111400][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.111400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.111400][ T72] ___sys_sendmsg+0xee/0x170 [ 644.111400][ T72] __sys_sendmsg+0xcd/0x170 [ 644.111400][ T72] do_syscall_64+0xc6/0x1e0 [ 644.111400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.111400][ T72] [ 644.113629][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 644.113629][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.113629][ T72] ipv6_find_idev+0x102/0x170 [ 644.113629][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.113629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.113629][ T72] netlink_rcv_skb+0x130/0x360 [ 644.113629][ T72] netlink_unicast+0x449/0x710 [ 644.113629][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.113629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.113629][ T72] ___sys_sendmsg+0xee/0x170 [ 644.113629][ T72] __sys_sendmsg+0xcd/0x170 [ 644.113629][ T72] do_syscall_64+0xc6/0x1e0 [ 644.113629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.113629][ T72] [ 644.115318][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 644.115318][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.115318][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.115318][ T72] ipv6_find_idev+0x102/0x170 [ 644.115318][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.115318][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.115318][ T72] netlink_rcv_skb+0x130/0x360 [ 644.115318][ T72] netlink_unicast+0x449/0x710 [ 644.115318][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.115318][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.115318][ T72] ___sys_sendmsg+0xee/0x170 [ 644.115318][ T72] __sys_sendmsg+0xcd/0x170 [ 644.115318][ T72] do_syscall_64+0xc6/0x1e0 [ 644.115318][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.115318][ T72] [ 644.117197][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 644.117509][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 644.117509][ T72] netdev_get_by_index+0x5e/0x80 [ 644.117509][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.117509][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.117509][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.117509][ T72] ipv6_add_addr+0x411/0x2000 [ 644.117509][ T72] inet6_addr_add+0x30e/0xa40 [ 644.117509][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.117509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.117509][ T72] netlink_rcv_skb+0x130/0x360 [ 644.117509][ T72] netlink_unicast+0x449/0x710 [ 644.117509][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.117509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.117509][ T72] ___sys_sendmsg+0xee/0x170 [ 644.117509][ T72] __sys_sendmsg+0xcd/0x170 [ 644.117509][ T72] do_syscall_64+0xc6/0x1e0 [ 644.117509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.117509][ T72] [ 644.119717][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 644.119717][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.119717][ T72] ipv6_find_idev+0x102/0x170 [ 644.119717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.119717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.119717][ T72] netlink_rcv_skb+0x130/0x360 [ 644.119717][ T72] netlink_unicast+0x449/0x710 [ 644.119717][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.119717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.119717][ T72] ___sys_sendmsg+0xee/0x170 [ 644.119717][ T72] __sys_sendmsg+0xcd/0x170 [ 644.119717][ T72] do_syscall_64+0xc6/0x1e0 [ 644.119717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.119717][ T72] [ 644.121401][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 644.121401][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.121401][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.121401][ T72] ipv6_find_idev+0x102/0x170 [ 644.121401][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.121401][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.121401][ T72] netlink_rcv_skb+0x130/0x360 [ 644.121401][ T72] netlink_unicast+0x449/0x710 [ 644.121401][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.121401][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.121401][ T72] ___sys_sendmsg+0xee/0x170 [ 644.121401][ T72] __sys_sendmsg+0xcd/0x170 [ 644.121401][ T72] do_syscall_64+0xc6/0x1e0 [ 644.121401][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.121401][ T72] [ 644.123242][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 644.123533][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 644.123533][ T72] netdev_get_by_index+0x5e/0x80 [ 644.123533][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.123533][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.123533][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.123533][ T72] ipv6_add_addr+0x411/0x2000 [ 644.123533][ T72] inet6_addr_add+0x30e/0xa40 [ 644.123533][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.123533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.123533][ T72] netlink_rcv_skb+0x130/0x360 [ 644.123533][ T72] netlink_unicast+0x449/0x710 [ 644.123533][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.123533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.123533][ T72] ___sys_sendmsg+0xee/0x170 [ 644.123533][ T72] __sys_sendmsg+0xcd/0x170 [ 644.123533][ T72] do_syscall_64+0xc6/0x1e0 [ 644.123533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.123533][ T72] [ 644.125703][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 644.125703][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.125703][ T72] ipv6_find_idev+0x102/0x170 [ 644.125703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.125703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.125703][ T72] netlink_rcv_skb+0x130/0x360 [ 644.125703][ T72] netlink_unicast+0x449/0x710 [ 644.125703][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.125703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.125703][ T72] ___sys_sendmsg+0xee/0x170 [ 644.125703][ T72] __sys_sendmsg+0xcd/0x170 [ 644.125703][ T72] do_syscall_64+0xc6/0x1e0 [ 644.125703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.125703][ T72] [ 644.127379][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 644.127379][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.127379][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.127379][ T72] ipv6_find_idev+0x102/0x170 [ 644.127379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.127379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.127379][ T72] netlink_rcv_skb+0x130/0x360 [ 644.127379][ T72] netlink_unicast+0x449/0x710 [ 644.127379][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.127379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.127379][ T72] ___sys_sendmsg+0xee/0x170 [ 644.127379][ T72] __sys_sendmsg+0xcd/0x170 [ 644.127379][ T72] do_syscall_64+0xc6/0x1e0 [ 644.127379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.127379][ T72] [ 644.129213][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 644.129498][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 644.129498][ T72] netdev_get_by_index+0x5e/0x80 [ 644.129498][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.129498][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.129498][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.129498][ T72] ipv6_add_addr+0x411/0x2000 [ 644.129498][ T72] inet6_addr_add+0x30e/0xa40 [ 644.129498][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.129498][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.129498][ T72] netlink_rcv_skb+0x130/0x360 [ 644.129498][ T72] netlink_unicast+0x449/0x710 [ 644.129498][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.129498][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.129498][ T72] ___sys_sendmsg+0xee/0x170 [ 644.129498][ T72] __sys_sendmsg+0xcd/0x170 [ 644.129498][ T72] do_syscall_64+0xc6/0x1e0 [ 644.129498][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.129498][ T72] [ 644.131648][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 644.131648][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.131648][ T72] ipv6_find_idev+0x102/0x170 [ 644.131648][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.131648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.131648][ T72] netlink_rcv_skb+0x130/0x360 [ 644.131648][ T72] netlink_unicast+0x449/0x710 [ 644.131648][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.131648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.131648][ T72] ___sys_sendmsg+0xee/0x170 [ 644.131648][ T72] __sys_sendmsg+0xcd/0x170 [ 644.131648][ T72] do_syscall_64+0xc6/0x1e0 [ 644.131648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.131648][ T72] [ 644.133330][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 644.133330][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.133330][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.133330][ T72] ipv6_find_idev+0x102/0x170 [ 644.133330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.133330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.133330][ T72] netlink_rcv_skb+0x130/0x360 [ 644.133330][ T72] netlink_unicast+0x449/0x710 [ 644.133330][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.133330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.133330][ T72] ___sys_sendmsg+0xee/0x170 [ 644.133330][ T72] __sys_sendmsg+0xcd/0x170 [ 644.133330][ T72] do_syscall_64+0xc6/0x1e0 [ 644.133330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.133330][ T72] [ 644.135569][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 644.136168][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 644.136168][ T72] netdev_get_by_index+0x5e/0x80 [ 644.136168][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.136168][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.136168][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.136168][ T72] ipv6_add_addr+0x411/0x2000 [ 644.136168][ T72] inet6_addr_add+0x30e/0xa40 [ 644.136168][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.136168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.136168][ T72] netlink_rcv_skb+0x130/0x360 [ 644.136168][ T72] netlink_unicast+0x449/0x710 [ 644.136168][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.136168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.136168][ T72] ___sys_sendmsg+0xee/0x170 [ 644.136168][ T72] __sys_sendmsg+0xcd/0x170 [ 644.136168][ T72] do_syscall_64+0xc6/0x1e0 [ 644.136168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.136168][ T72] [ 644.138175][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 644.138175][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.138175][ T72] ipv6_find_idev+0x102/0x170 [ 644.138175][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.138175][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.138175][ T72] netlink_rcv_skb+0x130/0x360 [ 644.138175][ T72] netlink_unicast+0x449/0x710 [ 644.138175][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.138175][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.138175][ T72] ___sys_sendmsg+0xee/0x170 [ 644.138175][ T72] __sys_sendmsg+0xcd/0x170 [ 644.138175][ T72] do_syscall_64+0xc6/0x1e0 [ 644.138175][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.138175][ T72] [ 644.139703][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 644.139703][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.139703][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.139703][ T72] ipv6_find_idev+0x102/0x170 [ 644.139703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.139703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.139703][ T72] netlink_rcv_skb+0x130/0x360 [ 644.139703][ T72] netlink_unicast+0x449/0x710 [ 644.139703][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.139703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.139703][ T72] ___sys_sendmsg+0xee/0x170 [ 644.139703][ T72] __sys_sendmsg+0xcd/0x170 [ 644.139703][ T72] do_syscall_64+0xc6/0x1e0 [ 644.139703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.139703][ T72] [ 644.141380][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 644.141649][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 644.141649][ T72] netdev_get_by_index+0x5e/0x80 [ 644.141649][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.141649][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.141649][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.141649][ T72] ipv6_add_addr+0x411/0x2000 [ 644.141649][ T72] inet6_addr_add+0x30e/0xa40 [ 644.141649][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.141649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.141649][ T72] netlink_rcv_skb+0x130/0x360 [ 644.141649][ T72] netlink_unicast+0x449/0x710 [ 644.141649][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.141649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.141649][ T72] ___sys_sendmsg+0xee/0x170 [ 644.141649][ T72] __sys_sendmsg+0xcd/0x170 [ 644.141649][ T72] do_syscall_64+0xc6/0x1e0 [ 644.141649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.141649][ T72] [ 644.143647][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 644.143647][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.143647][ T72] ipv6_find_idev+0x102/0x170 [ 644.143647][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.143647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.143647][ T72] netlink_rcv_skb+0x130/0x360 [ 644.143647][ T72] netlink_unicast+0x449/0x710 [ 644.143647][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.143647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.143647][ T72] ___sys_sendmsg+0xee/0x170 [ 644.143647][ T72] __sys_sendmsg+0xcd/0x170 [ 644.143647][ T72] do_syscall_64+0xc6/0x1e0 [ 644.143647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.143647][ T72] [ 644.145179][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 644.145179][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.145179][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.145179][ T72] ipv6_find_idev+0x102/0x170 [ 644.145179][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.145179][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.145179][ T72] netlink_rcv_skb+0x130/0x360 [ 644.145179][ T72] netlink_unicast+0x449/0x710 [ 644.145179][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.145179][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.145179][ T72] ___sys_sendmsg+0xee/0x170 [ 644.145179][ T72] __sys_sendmsg+0xcd/0x170 [ 644.145179][ T72] do_syscall_64+0xc6/0x1e0 [ 644.145179][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.145179][ T72] [ 644.147150][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 644.147457][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 644.147457][ T72] netdev_get_by_index+0x5e/0x80 [ 644.147457][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.147457][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.147457][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.147457][ T72] ipv6_add_addr+0x411/0x2000 [ 644.147457][ T72] inet6_addr_add+0x30e/0xa40 [ 644.147457][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.147457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.147457][ T72] netlink_rcv_skb+0x130/0x360 [ 644.147457][ T72] netlink_unicast+0x449/0x710 [ 644.147457][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.147457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.147457][ T72] ___sys_sendmsg+0xee/0x170 [ 644.147457][ T72] __sys_sendmsg+0xcd/0x170 [ 644.147457][ T72] do_syscall_64+0xc6/0x1e0 [ 644.147457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.147457][ T72] [ 644.149628][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 644.149628][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.149628][ T72] ipv6_find_idev+0x102/0x170 [ 644.149628][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.149628][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.149628][ T72] netlink_rcv_skb+0x130/0x360 [ 644.149628][ T72] netlink_unicast+0x449/0x710 [ 644.149628][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.149628][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.149628][ T72] ___sys_sendmsg+0xee/0x170 [ 644.149628][ T72] __sys_sendmsg+0xcd/0x170 [ 644.149628][ T72] do_syscall_64+0xc6/0x1e0 [ 644.149628][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.149628][ T72] [ 644.151350][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 644.151350][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.151350][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.151350][ T72] ipv6_find_idev+0x102/0x170 [ 644.151350][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.151350][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.151350][ T72] netlink_rcv_skb+0x130/0x360 [ 644.151350][ T72] netlink_unicast+0x449/0x710 [ 644.151350][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.151350][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.151350][ T72] ___sys_sendmsg+0xee/0x170 [ 644.151350][ T72] __sys_sendmsg+0xcd/0x170 [ 644.151350][ T72] do_syscall_64+0xc6/0x1e0 [ 644.151350][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.151350][ T72] [ 644.153293][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 644.153614][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 644.153614][ T72] netdev_get_by_index+0x5e/0x80 [ 644.153614][ T72] fib6_nh_init+0x3d8/0x15b0 [ 644.153614][ T72] ip6_route_info_create+0xf18/0x17d0 [ 644.153614][ T72] addrconf_f6i_alloc+0x244/0x410 [ 644.153614][ T72] ipv6_add_addr+0x411/0x2000 [ 644.153614][ T72] inet6_addr_add+0x30e/0xa40 [ 644.153614][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 644.153614][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.153614][ T72] netlink_rcv_skb+0x130/0x360 [ 644.153614][ T72] netlink_unicast+0x449/0x710 [ 644.153614][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.153614][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.153614][ T72] ___sys_sendmsg+0xee/0x170 [ 644.153614][ T72] __sys_sendmsg+0xcd/0x170 [ 644.153614][ T72] do_syscall_64+0xc6/0x1e0 [ 644.153614][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.153614][ T72] [ 644.155773][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 644.155773][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 644.155773][ T72] ipv6_find_idev+0x102/0x170 [ 644.155773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.155773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.155773][ T72] netlink_rcv_skb+0x130/0x360 [ 644.155773][ T72] netlink_unicast+0x449/0x710 [ 644.155773][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.155773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.155773][ T72] ___sys_sendmsg+0xee/0x170 [ 644.155773][ T72] __sys_sendmsg+0xcd/0x170 [ 644.155773][ T72] do_syscall_64+0xc6/0x1e0 [ 644.155773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.155773][ T72] [ 644.157538][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 644.157538][ T72] neigh_parms_alloc+0x1e5/0x510 [ 644.157538][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 644.157538][ T72] ipv6_find_idev+0x102/0x170 [ 644.157538][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 644.157538][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 644.157538][ T72] netlink_rcv_skb+0x130/0x360 [ 644.157538][ T72] netlink_unicast+0x449/0x710 [ 644.157538][ T72] netlink_sendmsg+0x723/0xbe0 [ 644.157538][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 644.157538][ T72] ___sys_sendmsg+0xee/0x170 [ 644.157538][ T72] __sys_sendmsg+0xcd/0x170 [ 644.157538][ T72] do_syscall_64+0xc6/0x1e0 [ 644.157538][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 644.157538][ T72] [ 654.166919][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 654.167404][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 654.167404][ T72] netdev_get_by_index+0x5e/0x80 [ 654.167404][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.167404][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.167404][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.167404][ T72] ipv6_add_addr+0x411/0x2000 [ 654.167404][ T72] inet6_addr_add+0x30e/0xa40 [ 654.167404][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.167404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.167404][ T72] netlink_rcv_skb+0x130/0x360 [ 654.167404][ T72] netlink_unicast+0x449/0x710 [ 654.167404][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.167404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.167404][ T72] ___sys_sendmsg+0xee/0x170 [ 654.167404][ T72] __sys_sendmsg+0xcd/0x170 [ 654.167404][ T72] do_syscall_64+0xc6/0x1e0 [ 654.167404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.167404][ T72] [ 654.169667][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 654.169667][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.169667][ T72] ipv6_find_idev+0x102/0x170 [ 654.169667][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.169667][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.169667][ T72] netlink_rcv_skb+0x130/0x360 [ 654.169667][ T72] netlink_unicast+0x449/0x710 [ 654.169667][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.169667][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.169667][ T72] ___sys_sendmsg+0xee/0x170 [ 654.169667][ T72] __sys_sendmsg+0xcd/0x170 [ 654.169667][ T72] do_syscall_64+0xc6/0x1e0 [ 654.169667][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.169667][ T72] [ 654.171359][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 654.171359][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.171359][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.171359][ T72] ipv6_find_idev+0x102/0x170 [ 654.171359][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.171359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.171359][ T72] netlink_rcv_skb+0x130/0x360 [ 654.171359][ T72] netlink_unicast+0x449/0x710 [ 654.171359][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.171359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.171359][ T72] ___sys_sendmsg+0xee/0x170 [ 654.171359][ T72] __sys_sendmsg+0xcd/0x170 [ 654.171359][ T72] do_syscall_64+0xc6/0x1e0 [ 654.171359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.171359][ T72] [ 654.173281][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 654.173581][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 654.173581][ T72] netdev_get_by_index+0x5e/0x80 [ 654.173581][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.173581][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.173581][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.173581][ T72] ipv6_add_addr+0x411/0x2000 [ 654.173581][ T72] inet6_addr_add+0x30e/0xa40 [ 654.173581][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.173581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.173581][ T72] netlink_rcv_skb+0x130/0x360 [ 654.173581][ T72] netlink_unicast+0x449/0x710 [ 654.173581][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.173581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.173581][ T72] ___sys_sendmsg+0xee/0x170 [ 654.173581][ T72] __sys_sendmsg+0xcd/0x170 [ 654.173581][ T72] do_syscall_64+0xc6/0x1e0 [ 654.173581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.173581][ T72] [ 654.175782][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 654.175782][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.175782][ T72] ipv6_find_idev+0x102/0x170 [ 654.175782][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.175782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.175782][ T72] netlink_rcv_skb+0x130/0x360 [ 654.175782][ T72] netlink_unicast+0x449/0x710 [ 654.175782][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.175782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.175782][ T72] ___sys_sendmsg+0xee/0x170 [ 654.175782][ T72] __sys_sendmsg+0xcd/0x170 [ 654.175782][ T72] do_syscall_64+0xc6/0x1e0 [ 654.175782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.175782][ T72] [ 654.177479][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 654.177479][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.177479][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.177479][ T72] ipv6_find_idev+0x102/0x170 [ 654.177479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.177479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.177479][ T72] netlink_rcv_skb+0x130/0x360 [ 654.177479][ T72] netlink_unicast+0x449/0x710 [ 654.177479][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.177479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.177479][ T72] ___sys_sendmsg+0xee/0x170 [ 654.177479][ T72] __sys_sendmsg+0xcd/0x170 [ 654.177479][ T72] do_syscall_64+0xc6/0x1e0 [ 654.177479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.177479][ T72] [ 654.179382][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 654.179678][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 654.179678][ T72] netdev_get_by_index+0x5e/0x80 [ 654.179678][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.179678][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.179678][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.179678][ T72] ipv6_add_addr+0x411/0x2000 [ 654.179678][ T72] inet6_addr_add+0x30e/0xa40 [ 654.179678][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.179678][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.179678][ T72] netlink_rcv_skb+0x130/0x360 [ 654.179678][ T72] netlink_unicast+0x449/0x710 [ 654.179678][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.179678][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.179678][ T72] ___sys_sendmsg+0xee/0x170 [ 654.179678][ T72] __sys_sendmsg+0xcd/0x170 [ 654.179678][ T72] do_syscall_64+0xc6/0x1e0 [ 654.179678][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.179678][ T72] [ 654.181876][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 654.181876][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.181876][ T72] ipv6_find_idev+0x102/0x170 [ 654.181876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.181876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.181876][ T72] netlink_rcv_skb+0x130/0x360 [ 654.181876][ T72] netlink_unicast+0x449/0x710 [ 654.181876][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.181876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.181876][ T72] ___sys_sendmsg+0xee/0x170 [ 654.181876][ T72] __sys_sendmsg+0xcd/0x170 [ 654.181876][ T72] do_syscall_64+0xc6/0x1e0 [ 654.181876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.181876][ T72] [ 654.183589][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 654.183589][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.183589][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.183589][ T72] ipv6_find_idev+0x102/0x170 [ 654.183589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.183589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.183589][ T72] netlink_rcv_skb+0x130/0x360 [ 654.183589][ T72] netlink_unicast+0x449/0x710 [ 654.183589][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.183589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.183589][ T72] ___sys_sendmsg+0xee/0x170 [ 654.183589][ T72] __sys_sendmsg+0xcd/0x170 [ 654.183589][ T72] do_syscall_64+0xc6/0x1e0 [ 654.183589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.183589][ T72] [ 654.185443][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 654.185739][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 654.185739][ T72] netdev_get_by_index+0x5e/0x80 [ 654.185739][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.185739][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.185739][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.185739][ T72] ipv6_add_addr+0x411/0x2000 [ 654.185739][ T72] inet6_addr_add+0x30e/0xa40 [ 654.185739][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.185739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.185739][ T72] netlink_rcv_skb+0x130/0x360 [ 654.185739][ T72] netlink_unicast+0x449/0x710 [ 654.185739][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.185739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.185739][ T72] ___sys_sendmsg+0xee/0x170 [ 654.185739][ T72] __sys_sendmsg+0xcd/0x170 [ 654.185739][ T72] do_syscall_64+0xc6/0x1e0 [ 654.185739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.185739][ T72] [ 654.187947][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 654.187947][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.187947][ T72] ipv6_find_idev+0x102/0x170 [ 654.187947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.187947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.187947][ T72] netlink_rcv_skb+0x130/0x360 [ 654.187947][ T72] netlink_unicast+0x449/0x710 [ 654.187947][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.187947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.187947][ T72] ___sys_sendmsg+0xee/0x170 [ 654.187947][ T72] __sys_sendmsg+0xcd/0x170 [ 654.187947][ T72] do_syscall_64+0xc6/0x1e0 [ 654.187947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.187947][ T72] [ 654.189630][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 654.189630][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.189630][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.189630][ T72] ipv6_find_idev+0x102/0x170 [ 654.189630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.189630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.189630][ T72] netlink_rcv_skb+0x130/0x360 [ 654.189630][ T72] netlink_unicast+0x449/0x710 [ 654.189630][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.189630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.189630][ T72] ___sys_sendmsg+0xee/0x170 [ 654.189630][ T72] __sys_sendmsg+0xcd/0x170 [ 654.189630][ T72] do_syscall_64+0xc6/0x1e0 [ 654.189630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.189630][ T72] [ 654.191881][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 654.192496][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 654.192496][ T72] netdev_get_by_index+0x5e/0x80 [ 654.192496][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.192496][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.192496][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.192496][ T72] ipv6_add_addr+0x411/0x2000 [ 654.192496][ T72] inet6_addr_add+0x30e/0xa40 [ 654.192496][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.192496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.192496][ T72] netlink_rcv_skb+0x130/0x360 [ 654.192496][ T72] netlink_unicast+0x449/0x710 [ 654.192496][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.192496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.192496][ T72] ___sys_sendmsg+0xee/0x170 [ 654.192496][ T72] __sys_sendmsg+0xcd/0x170 [ 654.192496][ T72] do_syscall_64+0xc6/0x1e0 [ 654.192496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.192496][ T72] [ 654.194670][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 654.194670][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.194670][ T72] ipv6_find_idev+0x102/0x170 [ 654.194670][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.194670][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.194670][ T72] netlink_rcv_skb+0x130/0x360 [ 654.194670][ T72] netlink_unicast+0x449/0x710 [ 654.194670][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.194670][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.194670][ T72] ___sys_sendmsg+0xee/0x170 [ 654.194670][ T72] __sys_sendmsg+0xcd/0x170 [ 654.194670][ T72] do_syscall_64+0xc6/0x1e0 [ 654.194670][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.194670][ T72] [ 654.196342][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 654.196342][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.196342][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.196342][ T72] ipv6_find_idev+0x102/0x170 [ 654.196342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.196342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.196342][ T72] netlink_rcv_skb+0x130/0x360 [ 654.196342][ T72] netlink_unicast+0x449/0x710 [ 654.196342][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.196342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.196342][ T72] ___sys_sendmsg+0xee/0x170 [ 654.196342][ T72] __sys_sendmsg+0xcd/0x170 [ 654.196342][ T72] do_syscall_64+0xc6/0x1e0 [ 654.196342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.196342][ T72] [ 654.198207][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 654.198493][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 654.198493][ T72] netdev_get_by_index+0x5e/0x80 [ 654.198493][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.198493][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.198493][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.198493][ T72] ipv6_add_addr+0x411/0x2000 [ 654.198493][ T72] inet6_addr_add+0x30e/0xa40 [ 654.198493][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.198493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.198493][ T72] netlink_rcv_skb+0x130/0x360 [ 654.198493][ T72] netlink_unicast+0x449/0x710 [ 654.198493][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.198493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.198493][ T72] ___sys_sendmsg+0xee/0x170 [ 654.198493][ T72] __sys_sendmsg+0xcd/0x170 [ 654.198493][ T72] do_syscall_64+0xc6/0x1e0 [ 654.198493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.198493][ T72] [ 654.200691][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 654.200691][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.200691][ T72] ipv6_find_idev+0x102/0x170 [ 654.200691][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.200691][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.200691][ T72] netlink_rcv_skb+0x130/0x360 [ 654.200691][ T72] netlink_unicast+0x449/0x710 [ 654.200691][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.200691][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.200691][ T72] ___sys_sendmsg+0xee/0x170 [ 654.200691][ T72] __sys_sendmsg+0xcd/0x170 [ 654.200691][ T72] do_syscall_64+0xc6/0x1e0 [ 654.200691][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.200691][ T72] [ 654.202456][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 654.202456][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.202456][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.202456][ T72] ipv6_find_idev+0x102/0x170 [ 654.202456][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.202456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.202456][ T72] netlink_rcv_skb+0x130/0x360 [ 654.202456][ T72] netlink_unicast+0x449/0x710 [ 654.202456][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.202456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.202456][ T72] ___sys_sendmsg+0xee/0x170 [ 654.202456][ T72] __sys_sendmsg+0xcd/0x170 [ 654.202456][ T72] do_syscall_64+0xc6/0x1e0 [ 654.202456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.202456][ T72] [ 654.204546][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 654.204894][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 654.204894][ T72] netdev_get_by_index+0x5e/0x80 [ 654.204894][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.204894][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.204894][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.204894][ T72] ipv6_add_addr+0x411/0x2000 [ 654.204894][ T72] inet6_addr_add+0x30e/0xa40 [ 654.204894][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.204894][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.204894][ T72] netlink_rcv_skb+0x130/0x360 [ 654.204894][ T72] netlink_unicast+0x449/0x710 [ 654.204894][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.204894][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.204894][ T72] ___sys_sendmsg+0xee/0x170 [ 654.204894][ T72] __sys_sendmsg+0xcd/0x170 [ 654.204894][ T72] do_syscall_64+0xc6/0x1e0 [ 654.204894][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.204894][ T72] [ 654.207798][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 654.207798][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.207798][ T72] ipv6_find_idev+0x102/0x170 [ 654.207798][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.207798][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.207798][ T72] netlink_rcv_skb+0x130/0x360 [ 654.207798][ T72] netlink_unicast+0x449/0x710 [ 654.207798][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.207798][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.207798][ T72] ___sys_sendmsg+0xee/0x170 [ 654.207798][ T72] __sys_sendmsg+0xcd/0x170 [ 654.207798][ T72] do_syscall_64+0xc6/0x1e0 [ 654.207798][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.207798][ T72] [ 654.209739][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 654.209739][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.209739][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.209739][ T72] ipv6_find_idev+0x102/0x170 [ 654.209739][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.209739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.209739][ T72] netlink_rcv_skb+0x130/0x360 [ 654.209739][ T72] netlink_unicast+0x449/0x710 [ 654.209739][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.209739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.209739][ T72] ___sys_sendmsg+0xee/0x170 [ 654.209739][ T72] __sys_sendmsg+0xcd/0x170 [ 654.209739][ T72] do_syscall_64+0xc6/0x1e0 [ 654.209739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.209739][ T72] [ 654.211875][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 654.212230][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 654.212230][ T72] netdev_get_by_index+0x5e/0x80 [ 654.212230][ T72] fib6_nh_init+0x3d8/0x15b0 [ 654.212230][ T72] ip6_route_info_create+0xf18/0x17d0 [ 654.212230][ T72] addrconf_f6i_alloc+0x244/0x410 [ 654.212230][ T72] ipv6_add_addr+0x411/0x2000 [ 654.212230][ T72] inet6_addr_add+0x30e/0xa40 [ 654.212230][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 654.212230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.212230][ T72] netlink_rcv_skb+0x130/0x360 [ 654.212230][ T72] netlink_unicast+0x449/0x710 [ 654.212230][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.212230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.212230][ T72] ___sys_sendmsg+0xee/0x170 [ 654.212230][ T72] __sys_sendmsg+0xcd/0x170 [ 654.212230][ T72] do_syscall_64+0xc6/0x1e0 [ 654.212230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.212230][ T72] [ 654.214613][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 654.214613][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 654.214613][ T72] ipv6_find_idev+0x102/0x170 [ 654.214613][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.214613][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.214613][ T72] netlink_rcv_skb+0x130/0x360 [ 654.214613][ T72] netlink_unicast+0x449/0x710 [ 654.214613][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.214613][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.214613][ T72] ___sys_sendmsg+0xee/0x170 [ 654.214613][ T72] __sys_sendmsg+0xcd/0x170 [ 654.214613][ T72] do_syscall_64+0xc6/0x1e0 [ 654.214613][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.214613][ T72] [ 654.216487][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 654.216487][ T72] neigh_parms_alloc+0x1e5/0x510 [ 654.216487][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 654.216487][ T72] ipv6_find_idev+0x102/0x170 [ 654.216487][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 654.216487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 654.216487][ T72] netlink_rcv_skb+0x130/0x360 [ 654.216487][ T72] netlink_unicast+0x449/0x710 [ 654.216487][ T72] netlink_sendmsg+0x723/0xbe0 [ 654.216487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 654.216487][ T72] ___sys_sendmsg+0xee/0x170 [ 654.216487][ T72] __sys_sendmsg+0xcd/0x170 [ 654.216487][ T72] do_syscall_64+0xc6/0x1e0 [ 654.216487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 654.216487][ T72] [ 664.382854][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 664.383295][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 664.383295][ T72] netdev_get_by_index+0x5e/0x80 [ 664.383295][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.383295][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.383295][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.383295][ T72] ipv6_add_addr+0x411/0x2000 [ 664.383295][ T72] inet6_addr_add+0x30e/0xa40 [ 664.383295][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.383295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.383295][ T72] netlink_rcv_skb+0x130/0x360 [ 664.383295][ T72] netlink_unicast+0x449/0x710 [ 664.383295][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.383295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.383295][ T72] ___sys_sendmsg+0xee/0x170 [ 664.383295][ T72] __sys_sendmsg+0xcd/0x170 [ 664.383295][ T72] do_syscall_64+0xc6/0x1e0 [ 664.383295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.383295][ T72] [ 664.385459][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 664.385459][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.385459][ T72] ipv6_find_idev+0x102/0x170 [ 664.385459][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.385459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.385459][ T72] netlink_rcv_skb+0x130/0x360 [ 664.385459][ T72] netlink_unicast+0x449/0x710 [ 664.385459][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.385459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.385459][ T72] ___sys_sendmsg+0xee/0x170 [ 664.385459][ T72] __sys_sendmsg+0xcd/0x170 [ 664.385459][ T72] do_syscall_64+0xc6/0x1e0 [ 664.385459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.385459][ T72] [ 664.387126][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 664.387126][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.387126][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.387126][ T72] ipv6_find_idev+0x102/0x170 [ 664.387126][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.387126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.387126][ T72] netlink_rcv_skb+0x130/0x360 [ 664.387126][ T72] netlink_unicast+0x449/0x710 [ 664.387126][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.387126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.387126][ T72] ___sys_sendmsg+0xee/0x170 [ 664.387126][ T72] __sys_sendmsg+0xcd/0x170 [ 664.387126][ T72] do_syscall_64+0xc6/0x1e0 [ 664.387126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.387126][ T72] [ 664.388942][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 664.389229][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 664.389229][ T72] netdev_get_by_index+0x5e/0x80 [ 664.389229][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.389229][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.389229][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.389229][ T72] ipv6_add_addr+0x411/0x2000 [ 664.389229][ T72] inet6_addr_add+0x30e/0xa40 [ 664.389229][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.389229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.389229][ T72] netlink_rcv_skb+0x130/0x360 [ 664.389229][ T72] netlink_unicast+0x449/0x710 [ 664.389229][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.389229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.389229][ T72] ___sys_sendmsg+0xee/0x170 [ 664.389229][ T72] __sys_sendmsg+0xcd/0x170 [ 664.389229][ T72] do_syscall_64+0xc6/0x1e0 [ 664.389229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.389229][ T72] [ 664.391332][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 664.391332][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.391332][ T72] ipv6_find_idev+0x102/0x170 [ 664.391332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.391332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.391332][ T72] netlink_rcv_skb+0x130/0x360 [ 664.391332][ T72] netlink_unicast+0x449/0x710 [ 664.391332][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.391332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.391332][ T72] ___sys_sendmsg+0xee/0x170 [ 664.391332][ T72] __sys_sendmsg+0xcd/0x170 [ 664.391332][ T72] do_syscall_64+0xc6/0x1e0 [ 664.391332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.391332][ T72] [ 664.392857][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 664.392857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.392857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.392857][ T72] ipv6_find_idev+0x102/0x170 [ 664.392857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.392857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.392857][ T72] netlink_rcv_skb+0x130/0x360 [ 664.392857][ T72] netlink_unicast+0x449/0x710 [ 664.392857][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.392857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.392857][ T72] ___sys_sendmsg+0xee/0x170 [ 664.392857][ T72] __sys_sendmsg+0xcd/0x170 [ 664.392857][ T72] do_syscall_64+0xc6/0x1e0 [ 664.392857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.392857][ T72] [ 664.394519][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 664.394803][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 664.394803][ T72] netdev_get_by_index+0x5e/0x80 [ 664.394803][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.394803][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.394803][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.394803][ T72] ipv6_add_addr+0x411/0x2000 [ 664.394803][ T72] inet6_addr_add+0x30e/0xa40 [ 664.394803][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.394803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.394803][ T72] netlink_rcv_skb+0x130/0x360 [ 664.394803][ T72] netlink_unicast+0x449/0x710 [ 664.394803][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.394803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.394803][ T72] ___sys_sendmsg+0xee/0x170 [ 664.394803][ T72] __sys_sendmsg+0xcd/0x170 [ 664.394803][ T72] do_syscall_64+0xc6/0x1e0 [ 664.394803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.394803][ T72] [ 664.396771][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 664.396771][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.396771][ T72] ipv6_find_idev+0x102/0x170 [ 664.396771][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.396771][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.396771][ T72] netlink_rcv_skb+0x130/0x360 [ 664.396771][ T72] netlink_unicast+0x449/0x710 [ 664.396771][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.396771][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.396771][ T72] ___sys_sendmsg+0xee/0x170 [ 664.396771][ T72] __sys_sendmsg+0xcd/0x170 [ 664.396771][ T72] do_syscall_64+0xc6/0x1e0 [ 664.396771][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.396771][ T72] [ 664.398297][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 664.398297][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.398297][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.398297][ T72] ipv6_find_idev+0x102/0x170 [ 664.398297][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.398297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.398297][ T72] netlink_rcv_skb+0x130/0x360 [ 664.398297][ T72] netlink_unicast+0x449/0x710 [ 664.398297][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.398297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.398297][ T72] ___sys_sendmsg+0xee/0x170 [ 664.398297][ T72] __sys_sendmsg+0xcd/0x170 [ 664.398297][ T72] do_syscall_64+0xc6/0x1e0 [ 664.398297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.398297][ T72] [ 664.399956][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 664.400217][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 664.400217][ T72] netdev_get_by_index+0x5e/0x80 [ 664.400217][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.400217][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.400217][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.400217][ T72] ipv6_add_addr+0x411/0x2000 [ 664.400217][ T72] inet6_addr_add+0x30e/0xa40 [ 664.400217][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.400217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.400217][ T72] netlink_rcv_skb+0x130/0x360 [ 664.400217][ T72] netlink_unicast+0x449/0x710 [ 664.400217][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.400217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.400217][ T72] ___sys_sendmsg+0xee/0x170 [ 664.400217][ T72] __sys_sendmsg+0xcd/0x170 [ 664.400217][ T72] do_syscall_64+0xc6/0x1e0 [ 664.400217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.400217][ T72] [ 664.402189][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 664.402189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.402189][ T72] ipv6_find_idev+0x102/0x170 [ 664.402189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.402189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.402189][ T72] netlink_rcv_skb+0x130/0x360 [ 664.402189][ T72] netlink_unicast+0x449/0x710 [ 664.402189][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.402189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.402189][ T72] ___sys_sendmsg+0xee/0x170 [ 664.402189][ T72] __sys_sendmsg+0xcd/0x170 [ 664.402189][ T72] do_syscall_64+0xc6/0x1e0 [ 664.402189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.402189][ T72] [ 664.403704][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 664.403704][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.403704][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.403704][ T72] ipv6_find_idev+0x102/0x170 [ 664.403704][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.403704][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.403704][ T72] netlink_rcv_skb+0x130/0x360 [ 664.403704][ T72] netlink_unicast+0x449/0x710 [ 664.403704][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.403704][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.403704][ T72] ___sys_sendmsg+0xee/0x170 [ 664.403704][ T72] __sys_sendmsg+0xcd/0x170 [ 664.403704][ T72] do_syscall_64+0xc6/0x1e0 [ 664.403704][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.403704][ T72] [ 664.405776][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 664.406038][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 664.406038][ T72] netdev_get_by_index+0x5e/0x80 [ 664.406038][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.406038][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.406038][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.406038][ T72] ipv6_add_addr+0x411/0x2000 [ 664.406038][ T72] inet6_addr_add+0x30e/0xa40 [ 664.406038][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.406038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.406038][ T72] netlink_rcv_skb+0x130/0x360 [ 664.406038][ T72] netlink_unicast+0x449/0x710 [ 664.406038][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.406038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.406038][ T72] ___sys_sendmsg+0xee/0x170 [ 664.406038][ T72] __sys_sendmsg+0xcd/0x170 [ 664.406038][ T72] do_syscall_64+0xc6/0x1e0 [ 664.406038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.406038][ T72] [ 664.408013][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 664.408013][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.408013][ T72] ipv6_find_idev+0x102/0x170 [ 664.408013][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.408013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.408013][ T72] netlink_rcv_skb+0x130/0x360 [ 664.408013][ T72] netlink_unicast+0x449/0x710 [ 664.408013][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.408013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.408013][ T72] ___sys_sendmsg+0xee/0x170 [ 664.408013][ T72] __sys_sendmsg+0xcd/0x170 [ 664.408013][ T72] do_syscall_64+0xc6/0x1e0 [ 664.408013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.408013][ T72] [ 664.409543][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 664.409543][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.409543][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.409543][ T72] ipv6_find_idev+0x102/0x170 [ 664.409543][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.409543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.409543][ T72] netlink_rcv_skb+0x130/0x360 [ 664.409543][ T72] netlink_unicast+0x449/0x710 [ 664.409543][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.409543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.409543][ T72] ___sys_sendmsg+0xee/0x170 [ 664.409543][ T72] __sys_sendmsg+0xcd/0x170 [ 664.409543][ T72] do_syscall_64+0xc6/0x1e0 [ 664.409543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.409543][ T72] [ 664.411259][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 664.411519][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 664.411519][ T72] netdev_get_by_index+0x5e/0x80 [ 664.411519][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.411519][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.411519][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.411519][ T72] ipv6_add_addr+0x411/0x2000 [ 664.411519][ T72] inet6_addr_add+0x30e/0xa40 [ 664.411519][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.411519][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.411519][ T72] netlink_rcv_skb+0x130/0x360 [ 664.411519][ T72] netlink_unicast+0x449/0x710 [ 664.411519][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.411519][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.411519][ T72] ___sys_sendmsg+0xee/0x170 [ 664.411519][ T72] __sys_sendmsg+0xcd/0x170 [ 664.411519][ T72] do_syscall_64+0xc6/0x1e0 [ 664.411519][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.411519][ T72] [ 664.413612][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 664.413612][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.413612][ T72] ipv6_find_idev+0x102/0x170 [ 664.413612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.413612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.413612][ T72] netlink_rcv_skb+0x130/0x360 [ 664.413612][ T72] netlink_unicast+0x449/0x710 [ 664.413612][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.413612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.413612][ T72] ___sys_sendmsg+0xee/0x170 [ 664.413612][ T72] __sys_sendmsg+0xcd/0x170 [ 664.413612][ T72] do_syscall_64+0xc6/0x1e0 [ 664.413612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.413612][ T72] [ 664.415367][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 664.415367][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.415367][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.415367][ T72] ipv6_find_idev+0x102/0x170 [ 664.415367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.415367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.415367][ T72] netlink_rcv_skb+0x130/0x360 [ 664.415367][ T72] netlink_unicast+0x449/0x710 [ 664.415367][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.415367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.415367][ T72] ___sys_sendmsg+0xee/0x170 [ 664.415367][ T72] __sys_sendmsg+0xcd/0x170 [ 664.415367][ T72] do_syscall_64+0xc6/0x1e0 [ 664.415367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.415367][ T72] [ 664.417301][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 664.417560][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 664.417560][ T72] netdev_get_by_index+0x5e/0x80 [ 664.417560][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.417560][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.417560][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.417560][ T72] ipv6_add_addr+0x411/0x2000 [ 664.417560][ T72] inet6_addr_add+0x30e/0xa40 [ 664.417560][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.417560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.417560][ T72] netlink_rcv_skb+0x130/0x360 [ 664.417560][ T72] netlink_unicast+0x449/0x710 [ 664.417560][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.417560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.417560][ T72] ___sys_sendmsg+0xee/0x170 [ 664.417560][ T72] __sys_sendmsg+0xcd/0x170 [ 664.417560][ T72] do_syscall_64+0xc6/0x1e0 [ 664.417560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.417560][ T72] [ 664.419883][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 664.419883][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.419883][ T72] ipv6_find_idev+0x102/0x170 [ 664.419883][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.419883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.419883][ T72] netlink_rcv_skb+0x130/0x360 [ 664.419883][ T72] netlink_unicast+0x449/0x710 [ 664.419883][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.419883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.419883][ T72] ___sys_sendmsg+0xee/0x170 [ 664.419883][ T72] __sys_sendmsg+0xcd/0x170 [ 664.419883][ T72] do_syscall_64+0xc6/0x1e0 [ 664.419883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.419883][ T72] [ 664.421726][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 664.421726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.421726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.421726][ T72] ipv6_find_idev+0x102/0x170 [ 664.421726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.421726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.421726][ T72] netlink_rcv_skb+0x130/0x360 [ 664.421726][ T72] netlink_unicast+0x449/0x710 [ 664.421726][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.421726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.421726][ T72] ___sys_sendmsg+0xee/0x170 [ 664.421726][ T72] __sys_sendmsg+0xcd/0x170 [ 664.421726][ T72] do_syscall_64+0xc6/0x1e0 [ 664.421726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.421726][ T72] [ 664.423780][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 664.424060][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 664.424060][ T72] netdev_get_by_index+0x5e/0x80 [ 664.424060][ T72] fib6_nh_init+0x3d8/0x15b0 [ 664.424060][ T72] ip6_route_info_create+0xf18/0x17d0 [ 664.424060][ T72] addrconf_f6i_alloc+0x244/0x410 [ 664.424060][ T72] ipv6_add_addr+0x411/0x2000 [ 664.424060][ T72] inet6_addr_add+0x30e/0xa40 [ 664.424060][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 664.424060][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.424060][ T72] netlink_rcv_skb+0x130/0x360 [ 664.424060][ T72] netlink_unicast+0x449/0x710 [ 664.424060][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.424060][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.424060][ T72] ___sys_sendmsg+0xee/0x170 [ 664.424060][ T72] __sys_sendmsg+0xcd/0x170 [ 664.424060][ T72] do_syscall_64+0xc6/0x1e0 [ 664.424060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.424060][ T72] [ 664.426460][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 664.426460][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 664.426460][ T72] ipv6_find_idev+0x102/0x170 [ 664.426460][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.426460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.426460][ T72] netlink_rcv_skb+0x130/0x360 [ 664.426460][ T72] netlink_unicast+0x449/0x710 [ 664.426460][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.426460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.426460][ T72] ___sys_sendmsg+0xee/0x170 [ 664.426460][ T72] __sys_sendmsg+0xcd/0x170 [ 664.426460][ T72] do_syscall_64+0xc6/0x1e0 [ 664.426460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.426460][ T72] [ 664.428269][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 664.428269][ T72] neigh_parms_alloc+0x1e5/0x510 [ 664.428269][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 664.428269][ T72] ipv6_find_idev+0x102/0x170 [ 664.428269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 664.428269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 664.428269][ T72] netlink_rcv_skb+0x130/0x360 [ 664.428269][ T72] netlink_unicast+0x449/0x710 [ 664.428269][ T72] netlink_sendmsg+0x723/0xbe0 [ 664.428269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 664.428269][ T72] ___sys_sendmsg+0xee/0x170 [ 664.428269][ T72] __sys_sendmsg+0xcd/0x170 [ 664.428269][ T72] do_syscall_64+0xc6/0x1e0 [ 664.428269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 664.428269][ T72] [ 674.838900][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 674.839329][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 674.839329][ T72] netdev_get_by_index+0x5e/0x80 [ 674.839329][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.839329][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.839329][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.839329][ T72] ipv6_add_addr+0x411/0x2000 [ 674.839329][ T72] inet6_addr_add+0x30e/0xa40 [ 674.839329][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.839329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.839329][ T72] netlink_rcv_skb+0x130/0x360 [ 674.839329][ T72] netlink_unicast+0x449/0x710 [ 674.839329][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.839329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.839329][ T72] ___sys_sendmsg+0xee/0x170 [ 674.839329][ T72] __sys_sendmsg+0xcd/0x170 [ 674.839329][ T72] do_syscall_64+0xc6/0x1e0 [ 674.839329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.839329][ T72] [ 674.842389][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 674.842389][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.842389][ T72] ipv6_find_idev+0x102/0x170 [ 674.842389][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.842389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.842389][ T72] netlink_rcv_skb+0x130/0x360 [ 674.842389][ T72] netlink_unicast+0x449/0x710 [ 674.842389][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.842389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.842389][ T72] ___sys_sendmsg+0xee/0x170 [ 674.842389][ T72] __sys_sendmsg+0xcd/0x170 [ 674.842389][ T72] do_syscall_64+0xc6/0x1e0 [ 674.842389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.842389][ T72] [ 674.844843][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 674.844843][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.844843][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.844843][ T72] ipv6_find_idev+0x102/0x170 [ 674.844843][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.844843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.844843][ T72] netlink_rcv_skb+0x130/0x360 [ 674.844843][ T72] netlink_unicast+0x449/0x710 [ 674.844843][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.844843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.844843][ T72] ___sys_sendmsg+0xee/0x170 [ 674.844843][ T72] __sys_sendmsg+0xcd/0x170 [ 674.844843][ T72] do_syscall_64+0xc6/0x1e0 [ 674.844843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.844843][ T72] [ 674.846820][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 674.847140][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 674.847140][ T72] netdev_get_by_index+0x5e/0x80 [ 674.847140][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.847140][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.847140][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.847140][ T72] ipv6_add_addr+0x411/0x2000 [ 674.847140][ T72] inet6_addr_add+0x30e/0xa40 [ 674.847140][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.847140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.847140][ T72] netlink_rcv_skb+0x130/0x360 [ 674.847140][ T72] netlink_unicast+0x449/0x710 [ 674.847140][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.847140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.847140][ T72] ___sys_sendmsg+0xee/0x170 [ 674.847140][ T72] __sys_sendmsg+0xcd/0x170 [ 674.847140][ T72] do_syscall_64+0xc6/0x1e0 [ 674.847140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.847140][ T72] [ 674.849169][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 674.849169][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.849169][ T72] ipv6_find_idev+0x102/0x170 [ 674.849169][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.849169][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.849169][ T72] netlink_rcv_skb+0x130/0x360 [ 674.849169][ T72] netlink_unicast+0x449/0x710 [ 674.849169][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.849169][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.849169][ T72] ___sys_sendmsg+0xee/0x170 [ 674.849169][ T72] __sys_sendmsg+0xcd/0x170 [ 674.849169][ T72] do_syscall_64+0xc6/0x1e0 [ 674.849169][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.849169][ T72] [ 674.850736][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 674.850736][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.850736][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.850736][ T72] ipv6_find_idev+0x102/0x170 [ 674.850736][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.850736][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.850736][ T72] netlink_rcv_skb+0x130/0x360 [ 674.850736][ T72] netlink_unicast+0x449/0x710 [ 674.850736][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.850736][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.850736][ T72] ___sys_sendmsg+0xee/0x170 [ 674.850736][ T72] __sys_sendmsg+0xcd/0x170 [ 674.850736][ T72] do_syscall_64+0xc6/0x1e0 [ 674.850736][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.850736][ T72] [ 674.852428][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 674.852697][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 674.852697][ T72] netdev_get_by_index+0x5e/0x80 [ 674.852697][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.852697][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.852697][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.852697][ T72] ipv6_add_addr+0x411/0x2000 [ 674.852697][ T72] inet6_addr_add+0x30e/0xa40 [ 674.852697][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.852697][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.852697][ T72] netlink_rcv_skb+0x130/0x360 [ 674.852697][ T72] netlink_unicast+0x449/0x710 [ 674.852697][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.852697][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.852697][ T72] ___sys_sendmsg+0xee/0x170 [ 674.852697][ T72] __sys_sendmsg+0xcd/0x170 [ 674.852697][ T72] do_syscall_64+0xc6/0x1e0 [ 674.852697][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.852697][ T72] [ 674.854723][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 674.854723][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.854723][ T72] ipv6_find_idev+0x102/0x170 [ 674.854723][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.854723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.854723][ T72] netlink_rcv_skb+0x130/0x360 [ 674.854723][ T72] netlink_unicast+0x449/0x710 [ 674.854723][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.854723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.854723][ T72] ___sys_sendmsg+0xee/0x170 [ 674.854723][ T72] __sys_sendmsg+0xcd/0x170 [ 674.854723][ T72] do_syscall_64+0xc6/0x1e0 [ 674.854723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.854723][ T72] [ 674.856264][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 674.856264][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.856264][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.856264][ T72] ipv6_find_idev+0x102/0x170 [ 674.856264][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.856264][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.856264][ T72] netlink_rcv_skb+0x130/0x360 [ 674.856264][ T72] netlink_unicast+0x449/0x710 [ 674.856264][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.856264][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.856264][ T72] ___sys_sendmsg+0xee/0x170 [ 674.856264][ T72] __sys_sendmsg+0xcd/0x170 [ 674.856264][ T72] do_syscall_64+0xc6/0x1e0 [ 674.856264][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.856264][ T72] [ 674.857959][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 674.858237][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 674.858237][ T72] netdev_get_by_index+0x5e/0x80 [ 674.858237][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.858237][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.858237][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.858237][ T72] ipv6_add_addr+0x411/0x2000 [ 674.858237][ T72] inet6_addr_add+0x30e/0xa40 [ 674.858237][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.858237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.858237][ T72] netlink_rcv_skb+0x130/0x360 [ 674.858237][ T72] netlink_unicast+0x449/0x710 [ 674.858237][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.858237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.858237][ T72] ___sys_sendmsg+0xee/0x170 [ 674.858237][ T72] __sys_sendmsg+0xcd/0x170 [ 674.858237][ T72] do_syscall_64+0xc6/0x1e0 [ 674.858237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.858237][ T72] [ 674.860229][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 674.860229][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.860229][ T72] ipv6_find_idev+0x102/0x170 [ 674.860229][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.860229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.860229][ T72] netlink_rcv_skb+0x130/0x360 [ 674.860229][ T72] netlink_unicast+0x449/0x710 [ 674.860229][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.860229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.860229][ T72] ___sys_sendmsg+0xee/0x170 [ 674.860229][ T72] __sys_sendmsg+0xcd/0x170 [ 674.860229][ T72] do_syscall_64+0xc6/0x1e0 [ 674.860229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.860229][ T72] [ 674.861773][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 674.861773][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.861773][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.861773][ T72] ipv6_find_idev+0x102/0x170 [ 674.861773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.861773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.861773][ T72] netlink_rcv_skb+0x130/0x360 [ 674.861773][ T72] netlink_unicast+0x449/0x710 [ 674.861773][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.861773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.861773][ T72] ___sys_sendmsg+0xee/0x170 [ 674.861773][ T72] __sys_sendmsg+0xcd/0x170 [ 674.861773][ T72] do_syscall_64+0xc6/0x1e0 [ 674.861773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.861773][ T72] [ 674.863893][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 674.864155][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 674.864155][ T72] netdev_get_by_index+0x5e/0x80 [ 674.864155][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.864155][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.864155][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.864155][ T72] ipv6_add_addr+0x411/0x2000 [ 674.864155][ T72] inet6_addr_add+0x30e/0xa40 [ 674.864155][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.864155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.864155][ T72] netlink_rcv_skb+0x130/0x360 [ 674.864155][ T72] netlink_unicast+0x449/0x710 [ 674.864155][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.864155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.864155][ T72] ___sys_sendmsg+0xee/0x170 [ 674.864155][ T72] __sys_sendmsg+0xcd/0x170 [ 674.864155][ T72] do_syscall_64+0xc6/0x1e0 [ 674.864155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.864155][ T72] [ 674.866140][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 674.866140][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.866140][ T72] ipv6_find_idev+0x102/0x170 [ 674.866140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.866140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.866140][ T72] netlink_rcv_skb+0x130/0x360 [ 674.866140][ T72] netlink_unicast+0x449/0x710 [ 674.866140][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.866140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.866140][ T72] ___sys_sendmsg+0xee/0x170 [ 674.866140][ T72] __sys_sendmsg+0xcd/0x170 [ 674.866140][ T72] do_syscall_64+0xc6/0x1e0 [ 674.866140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.866140][ T72] [ 674.867653][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 674.867653][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.867653][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.867653][ T72] ipv6_find_idev+0x102/0x170 [ 674.867653][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.867653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.867653][ T72] netlink_rcv_skb+0x130/0x360 [ 674.867653][ T72] netlink_unicast+0x449/0x710 [ 674.867653][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.867653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.867653][ T72] ___sys_sendmsg+0xee/0x170 [ 674.867653][ T72] __sys_sendmsg+0xcd/0x170 [ 674.867653][ T72] do_syscall_64+0xc6/0x1e0 [ 674.867653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.867653][ T72] [ 674.869392][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 674.869656][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 674.869656][ T72] netdev_get_by_index+0x5e/0x80 [ 674.869656][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.869656][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.869656][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.869656][ T72] ipv6_add_addr+0x411/0x2000 [ 674.869656][ T72] inet6_addr_add+0x30e/0xa40 [ 674.869656][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.869656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.869656][ T72] netlink_rcv_skb+0x130/0x360 [ 674.869656][ T72] netlink_unicast+0x449/0x710 [ 674.869656][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.869656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.869656][ T72] ___sys_sendmsg+0xee/0x170 [ 674.869656][ T72] __sys_sendmsg+0xcd/0x170 [ 674.869656][ T72] do_syscall_64+0xc6/0x1e0 [ 674.869656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.869656][ T72] [ 674.871753][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 674.871753][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.871753][ T72] ipv6_find_idev+0x102/0x170 [ 674.871753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.871753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.871753][ T72] netlink_rcv_skb+0x130/0x360 [ 674.871753][ T72] netlink_unicast+0x449/0x710 [ 674.871753][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.871753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.871753][ T72] ___sys_sendmsg+0xee/0x170 [ 674.871753][ T72] __sys_sendmsg+0xcd/0x170 [ 674.871753][ T72] do_syscall_64+0xc6/0x1e0 [ 674.871753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.871753][ T72] [ 674.873543][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 674.873543][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.873543][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.873543][ T72] ipv6_find_idev+0x102/0x170 [ 674.873543][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.873543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.873543][ T72] netlink_rcv_skb+0x130/0x360 [ 674.873543][ T72] netlink_unicast+0x449/0x710 [ 674.873543][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.873543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.873543][ T72] ___sys_sendmsg+0xee/0x170 [ 674.873543][ T72] __sys_sendmsg+0xcd/0x170 [ 674.873543][ T72] do_syscall_64+0xc6/0x1e0 [ 674.873543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.873543][ T72] [ 674.875511][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 674.875773][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 674.875773][ T72] netdev_get_by_index+0x5e/0x80 [ 674.875773][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.875773][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.875773][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.875773][ T72] ipv6_add_addr+0x411/0x2000 [ 674.875773][ T72] inet6_addr_add+0x30e/0xa40 [ 674.875773][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.875773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.875773][ T72] netlink_rcv_skb+0x130/0x360 [ 674.875773][ T72] netlink_unicast+0x449/0x710 [ 674.875773][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.875773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.875773][ T72] ___sys_sendmsg+0xee/0x170 [ 674.875773][ T72] __sys_sendmsg+0xcd/0x170 [ 674.875773][ T72] do_syscall_64+0xc6/0x1e0 [ 674.875773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.875773][ T72] [ 674.877948][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 674.877948][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.877948][ T72] ipv6_find_idev+0x102/0x170 [ 674.877948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.877948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.877948][ T72] netlink_rcv_skb+0x130/0x360 [ 674.877948][ T72] netlink_unicast+0x449/0x710 [ 674.877948][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.877948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.877948][ T72] ___sys_sendmsg+0xee/0x170 [ 674.877948][ T72] __sys_sendmsg+0xcd/0x170 [ 674.877948][ T72] do_syscall_64+0xc6/0x1e0 [ 674.877948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.877948][ T72] [ 674.879645][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 674.879645][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.879645][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.879645][ T72] ipv6_find_idev+0x102/0x170 [ 674.879645][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.879645][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.879645][ T72] netlink_rcv_skb+0x130/0x360 [ 674.879645][ T72] netlink_unicast+0x449/0x710 [ 674.879645][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.879645][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.879645][ T72] ___sys_sendmsg+0xee/0x170 [ 674.879645][ T72] __sys_sendmsg+0xcd/0x170 [ 674.879645][ T72] do_syscall_64+0xc6/0x1e0 [ 674.879645][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.879645][ T72] [ 674.881601][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 674.881916][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 674.881916][ T72] netdev_get_by_index+0x5e/0x80 [ 674.881916][ T72] fib6_nh_init+0x3d8/0x15b0 [ 674.881916][ T72] ip6_route_info_create+0xf18/0x17d0 [ 674.881916][ T72] addrconf_f6i_alloc+0x244/0x410 [ 674.881916][ T72] ipv6_add_addr+0x411/0x2000 [ 674.881916][ T72] inet6_addr_add+0x30e/0xa40 [ 674.881916][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 674.881916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.881916][ T72] netlink_rcv_skb+0x130/0x360 [ 674.881916][ T72] netlink_unicast+0x449/0x710 [ 674.881916][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.881916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.881916][ T72] ___sys_sendmsg+0xee/0x170 [ 674.881916][ T72] __sys_sendmsg+0xcd/0x170 [ 674.881916][ T72] do_syscall_64+0xc6/0x1e0 [ 674.881916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.881916][ T72] [ 674.884123][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 674.884123][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 674.884123][ T72] ipv6_find_idev+0x102/0x170 [ 674.884123][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.884123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.884123][ T72] netlink_rcv_skb+0x130/0x360 [ 674.884123][ T72] netlink_unicast+0x449/0x710 [ 674.884123][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.884123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.884123][ T72] ___sys_sendmsg+0xee/0x170 [ 674.884123][ T72] __sys_sendmsg+0xcd/0x170 [ 674.884123][ T72] do_syscall_64+0xc6/0x1e0 [ 674.884123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.884123][ T72] [ 674.885835][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 674.885835][ T72] neigh_parms_alloc+0x1e5/0x510 [ 674.885835][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 674.885835][ T72] ipv6_find_idev+0x102/0x170 [ 674.885835][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 674.885835][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 674.885835][ T72] netlink_rcv_skb+0x130/0x360 [ 674.885835][ T72] netlink_unicast+0x449/0x710 [ 674.885835][ T72] netlink_sendmsg+0x723/0xbe0 [ 674.885835][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 674.885835][ T72] ___sys_sendmsg+0xee/0x170 [ 674.885835][ T72] __sys_sendmsg+0xcd/0x170 [ 674.885835][ T72] do_syscall_64+0xc6/0x1e0 [ 674.885835][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 674.885835][ T72] [ 685.142845][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 685.143375][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 685.143375][ T72] netdev_get_by_index+0x5e/0x80 [ 685.143375][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.143375][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.143375][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.143375][ T72] ipv6_add_addr+0x411/0x2000 [ 685.143375][ T72] inet6_addr_add+0x30e/0xa40 [ 685.143375][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.143375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.143375][ T72] netlink_rcv_skb+0x130/0x360 [ 685.143375][ T72] netlink_unicast+0x449/0x710 [ 685.143375][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.143375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.143375][ T72] ___sys_sendmsg+0xee/0x170 [ 685.143375][ T72] __sys_sendmsg+0xcd/0x170 [ 685.143375][ T72] do_syscall_64+0xc6/0x1e0 [ 685.143375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.143375][ T72] [ 685.145599][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 685.145599][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.145599][ T72] ipv6_find_idev+0x102/0x170 [ 685.145599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.145599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.145599][ T72] netlink_rcv_skb+0x130/0x360 [ 685.145599][ T72] netlink_unicast+0x449/0x710 [ 685.145599][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.145599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.145599][ T72] ___sys_sendmsg+0xee/0x170 [ 685.145599][ T72] __sys_sendmsg+0xcd/0x170 [ 685.145599][ T72] do_syscall_64+0xc6/0x1e0 [ 685.145599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.145599][ T72] [ 685.147290][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 685.147290][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.147290][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.147290][ T72] ipv6_find_idev+0x102/0x170 [ 685.147290][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.147290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.147290][ T72] netlink_rcv_skb+0x130/0x360 [ 685.147290][ T72] netlink_unicast+0x449/0x710 [ 685.147290][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.147290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.147290][ T72] ___sys_sendmsg+0xee/0x170 [ 685.147290][ T72] __sys_sendmsg+0xcd/0x170 [ 685.147290][ T72] do_syscall_64+0xc6/0x1e0 [ 685.147290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.147290][ T72] [ 685.149190][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 685.149491][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 685.149491][ T72] netdev_get_by_index+0x5e/0x80 [ 685.149491][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.149491][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.149491][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.149491][ T72] ipv6_add_addr+0x411/0x2000 [ 685.149491][ T72] inet6_addr_add+0x30e/0xa40 [ 685.149491][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.149491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.149491][ T72] netlink_rcv_skb+0x130/0x360 [ 685.149491][ T72] netlink_unicast+0x449/0x710 [ 685.149491][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.149491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.149491][ T72] ___sys_sendmsg+0xee/0x170 [ 685.149491][ T72] __sys_sendmsg+0xcd/0x170 [ 685.149491][ T72] do_syscall_64+0xc6/0x1e0 [ 685.149491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.149491][ T72] [ 685.151728][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 685.151728][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.151728][ T72] ipv6_find_idev+0x102/0x170 [ 685.151728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.151728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.151728][ T72] netlink_rcv_skb+0x130/0x360 [ 685.151728][ T72] netlink_unicast+0x449/0x710 [ 685.151728][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.151728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.151728][ T72] ___sys_sendmsg+0xee/0x170 [ 685.151728][ T72] __sys_sendmsg+0xcd/0x170 [ 685.151728][ T72] do_syscall_64+0xc6/0x1e0 [ 685.151728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.151728][ T72] [ 685.153491][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 685.153491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.153491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.153491][ T72] ipv6_find_idev+0x102/0x170 [ 685.153491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.153491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.153491][ T72] netlink_rcv_skb+0x130/0x360 [ 685.153491][ T72] netlink_unicast+0x449/0x710 [ 685.153491][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.153491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.153491][ T72] ___sys_sendmsg+0xee/0x170 [ 685.153491][ T72] __sys_sendmsg+0xcd/0x170 [ 685.153491][ T72] do_syscall_64+0xc6/0x1e0 [ 685.153491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.153491][ T72] [ 685.155389][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 685.155684][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 685.155684][ T72] netdev_get_by_index+0x5e/0x80 [ 685.155684][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.155684][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.155684][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.155684][ T72] ipv6_add_addr+0x411/0x2000 [ 685.155684][ T72] inet6_addr_add+0x30e/0xa40 [ 685.155684][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.155684][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.155684][ T72] netlink_rcv_skb+0x130/0x360 [ 685.155684][ T72] netlink_unicast+0x449/0x710 [ 685.155684][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.155684][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.155684][ T72] ___sys_sendmsg+0xee/0x170 [ 685.155684][ T72] __sys_sendmsg+0xcd/0x170 [ 685.155684][ T72] do_syscall_64+0xc6/0x1e0 [ 685.155684][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.155684][ T72] [ 685.157918][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 685.157918][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.157918][ T72] ipv6_find_idev+0x102/0x170 [ 685.157918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.157918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.157918][ T72] netlink_rcv_skb+0x130/0x360 [ 685.157918][ T72] netlink_unicast+0x449/0x710 [ 685.157918][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.157918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.157918][ T72] ___sys_sendmsg+0xee/0x170 [ 685.157918][ T72] __sys_sendmsg+0xcd/0x170 [ 685.157918][ T72] do_syscall_64+0xc6/0x1e0 [ 685.157918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.157918][ T72] [ 685.159621][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 685.159621][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.159621][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.159621][ T72] ipv6_find_idev+0x102/0x170 [ 685.159621][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.159621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.159621][ T72] netlink_rcv_skb+0x130/0x360 [ 685.159621][ T72] netlink_unicast+0x449/0x710 [ 685.159621][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.159621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.159621][ T72] ___sys_sendmsg+0xee/0x170 [ 685.159621][ T72] __sys_sendmsg+0xcd/0x170 [ 685.159621][ T72] do_syscall_64+0xc6/0x1e0 [ 685.159621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.159621][ T72] [ 685.161475][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 685.161782][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 685.161782][ T72] netdev_get_by_index+0x5e/0x80 [ 685.161782][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.161782][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.161782][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.161782][ T72] ipv6_add_addr+0x411/0x2000 [ 685.161782][ T72] inet6_addr_add+0x30e/0xa40 [ 685.161782][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.161782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.161782][ T72] netlink_rcv_skb+0x130/0x360 [ 685.161782][ T72] netlink_unicast+0x449/0x710 [ 685.161782][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.161782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.161782][ T72] ___sys_sendmsg+0xee/0x170 [ 685.161782][ T72] __sys_sendmsg+0xcd/0x170 [ 685.161782][ T72] do_syscall_64+0xc6/0x1e0 [ 685.161782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.161782][ T72] [ 685.164001][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 685.164001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.164001][ T72] ipv6_find_idev+0x102/0x170 [ 685.164001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.164001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.164001][ T72] netlink_rcv_skb+0x130/0x360 [ 685.164001][ T72] netlink_unicast+0x449/0x710 [ 685.164001][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.164001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.164001][ T72] ___sys_sendmsg+0xee/0x170 [ 685.164001][ T72] __sys_sendmsg+0xcd/0x170 [ 685.164001][ T72] do_syscall_64+0xc6/0x1e0 [ 685.164001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.164001][ T72] [ 685.165797][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 685.165797][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.165797][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.165797][ T72] ipv6_find_idev+0x102/0x170 [ 685.165797][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.165797][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.165797][ T72] netlink_rcv_skb+0x130/0x360 [ 685.165797][ T72] netlink_unicast+0x449/0x710 [ 685.165797][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.165797][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.165797][ T72] ___sys_sendmsg+0xee/0x170 [ 685.165797][ T72] __sys_sendmsg+0xcd/0x170 [ 685.165797][ T72] do_syscall_64+0xc6/0x1e0 [ 685.165797][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.165797][ T72] [ 685.168115][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 685.168752][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 685.168752][ T72] netdev_get_by_index+0x5e/0x80 [ 685.168752][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.168752][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.168752][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.168752][ T72] ipv6_add_addr+0x411/0x2000 [ 685.168752][ T72] inet6_addr_add+0x30e/0xa40 [ 685.168752][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.168752][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.168752][ T72] netlink_rcv_skb+0x130/0x360 [ 685.168752][ T72] netlink_unicast+0x449/0x710 [ 685.168752][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.168752][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.168752][ T72] ___sys_sendmsg+0xee/0x170 [ 685.168752][ T72] __sys_sendmsg+0xcd/0x170 [ 685.168752][ T72] do_syscall_64+0xc6/0x1e0 [ 685.168752][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.168752][ T72] [ 685.171022][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 685.171022][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.171022][ T72] ipv6_find_idev+0x102/0x170 [ 685.171022][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.171022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.171022][ T72] netlink_rcv_skb+0x130/0x360 [ 685.171022][ T72] netlink_unicast+0x449/0x710 [ 685.171022][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.171022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.171022][ T72] ___sys_sendmsg+0xee/0x170 [ 685.171022][ T72] __sys_sendmsg+0xcd/0x170 [ 685.171022][ T72] do_syscall_64+0xc6/0x1e0 [ 685.171022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.171022][ T72] [ 685.172783][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 685.172783][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.172783][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.172783][ T72] ipv6_find_idev+0x102/0x170 [ 685.172783][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.172783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.172783][ T72] netlink_rcv_skb+0x130/0x360 [ 685.172783][ T72] netlink_unicast+0x449/0x710 [ 685.172783][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.172783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.172783][ T72] ___sys_sendmsg+0xee/0x170 [ 685.172783][ T72] __sys_sendmsg+0xcd/0x170 [ 685.172783][ T72] do_syscall_64+0xc6/0x1e0 [ 685.172783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.172783][ T72] [ 685.174784][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 685.175095][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 685.175095][ T72] netdev_get_by_index+0x5e/0x80 [ 685.175095][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.175095][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.175095][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.175095][ T72] ipv6_add_addr+0x411/0x2000 [ 685.175095][ T72] inet6_addr_add+0x30e/0xa40 [ 685.175095][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.175095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.175095][ T72] netlink_rcv_skb+0x130/0x360 [ 685.175095][ T72] netlink_unicast+0x449/0x710 [ 685.175095][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.175095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.175095][ T72] ___sys_sendmsg+0xee/0x170 [ 685.175095][ T72] __sys_sendmsg+0xcd/0x170 [ 685.175095][ T72] do_syscall_64+0xc6/0x1e0 [ 685.175095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.175095][ T72] [ 685.177300][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 685.177300][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.177300][ T72] ipv6_find_idev+0x102/0x170 [ 685.177300][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.177300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.177300][ T72] netlink_rcv_skb+0x130/0x360 [ 685.177300][ T72] netlink_unicast+0x449/0x710 [ 685.177300][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.177300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.177300][ T72] ___sys_sendmsg+0xee/0x170 [ 685.177300][ T72] __sys_sendmsg+0xcd/0x170 [ 685.177300][ T72] do_syscall_64+0xc6/0x1e0 [ 685.177300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.177300][ T72] [ 685.179148][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 685.179148][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.179148][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.179148][ T72] ipv6_find_idev+0x102/0x170 [ 685.179148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.179148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.179148][ T72] netlink_rcv_skb+0x130/0x360 [ 685.179148][ T72] netlink_unicast+0x449/0x710 [ 685.179148][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.179148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.179148][ T72] ___sys_sendmsg+0xee/0x170 [ 685.179148][ T72] __sys_sendmsg+0xcd/0x170 [ 685.179148][ T72] do_syscall_64+0xc6/0x1e0 [ 685.179148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.179148][ T72] [ 685.181422][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 685.181783][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 685.181783][ T72] netdev_get_by_index+0x5e/0x80 [ 685.181783][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.181783][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.181783][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.181783][ T72] ipv6_add_addr+0x411/0x2000 [ 685.181783][ T72] inet6_addr_add+0x30e/0xa40 [ 685.181783][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.181783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.181783][ T72] netlink_rcv_skb+0x130/0x360 [ 685.181783][ T72] netlink_unicast+0x449/0x710 [ 685.181783][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.181783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.181783][ T72] ___sys_sendmsg+0xee/0x170 [ 685.181783][ T72] __sys_sendmsg+0xcd/0x170 [ 685.181783][ T72] do_syscall_64+0xc6/0x1e0 [ 685.181783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.181783][ T72] [ 685.184304][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 685.184304][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.184304][ T72] ipv6_find_idev+0x102/0x170 [ 685.184304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.184304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.184304][ T72] netlink_rcv_skb+0x130/0x360 [ 685.184304][ T72] netlink_unicast+0x449/0x710 [ 685.184304][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.184304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.184304][ T72] ___sys_sendmsg+0xee/0x170 [ 685.184304][ T72] __sys_sendmsg+0xcd/0x170 [ 685.184304][ T72] do_syscall_64+0xc6/0x1e0 [ 685.184304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.184304][ T72] [ 685.186307][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 685.186307][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.186307][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.186307][ T72] ipv6_find_idev+0x102/0x170 [ 685.186307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.186307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.186307][ T72] netlink_rcv_skb+0x130/0x360 [ 685.186307][ T72] netlink_unicast+0x449/0x710 [ 685.186307][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.186307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.186307][ T72] ___sys_sendmsg+0xee/0x170 [ 685.186307][ T72] __sys_sendmsg+0xcd/0x170 [ 685.186307][ T72] do_syscall_64+0xc6/0x1e0 [ 685.186307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.186307][ T72] [ 685.188478][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 685.188827][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 685.188827][ T72] netdev_get_by_index+0x5e/0x80 [ 685.188827][ T72] fib6_nh_init+0x3d8/0x15b0 [ 685.188827][ T72] ip6_route_info_create+0xf18/0x17d0 [ 685.188827][ T72] addrconf_f6i_alloc+0x244/0x410 [ 685.188827][ T72] ipv6_add_addr+0x411/0x2000 [ 685.188827][ T72] inet6_addr_add+0x30e/0xa40 [ 685.188827][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 685.188827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.188827][ T72] netlink_rcv_skb+0x130/0x360 [ 685.188827][ T72] netlink_unicast+0x449/0x710 [ 685.188827][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.188827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.188827][ T72] ___sys_sendmsg+0xee/0x170 [ 685.188827][ T72] __sys_sendmsg+0xcd/0x170 [ 685.188827][ T72] do_syscall_64+0xc6/0x1e0 [ 685.188827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.188827][ T72] [ 685.191212][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 685.191212][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 685.191212][ T72] ipv6_find_idev+0x102/0x170 [ 685.191212][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.191212][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.191212][ T72] netlink_rcv_skb+0x130/0x360 [ 685.191212][ T72] netlink_unicast+0x449/0x710 [ 685.191212][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.191212][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.191212][ T72] ___sys_sendmsg+0xee/0x170 [ 685.191212][ T72] __sys_sendmsg+0xcd/0x170 [ 685.191212][ T72] do_syscall_64+0xc6/0x1e0 [ 685.191212][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.191212][ T72] [ 685.193262][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 685.193262][ T72] neigh_parms_alloc+0x1e5/0x510 [ 685.193262][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 685.193262][ T72] ipv6_find_idev+0x102/0x170 [ 685.193262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 685.193262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 685.193262][ T72] netlink_rcv_skb+0x130/0x360 [ 685.193262][ T72] netlink_unicast+0x449/0x710 [ 685.193262][ T72] netlink_sendmsg+0x723/0xbe0 [ 685.193262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 685.193262][ T72] ___sys_sendmsg+0xee/0x170 [ 685.193262][ T72] __sys_sendmsg+0xcd/0x170 [ 685.193262][ T72] do_syscall_64+0xc6/0x1e0 [ 685.193262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 685.193262][ T72] [ 695.446909][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 695.447360][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 695.447360][ T72] netdev_get_by_index+0x5e/0x80 [ 695.447360][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.447360][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.447360][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.447360][ T72] ipv6_add_addr+0x411/0x2000 [ 695.447360][ T72] inet6_addr_add+0x30e/0xa40 [ 695.447360][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.447360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.447360][ T72] netlink_rcv_skb+0x130/0x360 [ 695.447360][ T72] netlink_unicast+0x449/0x710 [ 695.447360][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.447360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.447360][ T72] ___sys_sendmsg+0xee/0x170 [ 695.447360][ T72] __sys_sendmsg+0xcd/0x170 [ 695.447360][ T72] do_syscall_64+0xc6/0x1e0 [ 695.447360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.447360][ T72] [ 695.449586][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 695.449586][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.449586][ T72] ipv6_find_idev+0x102/0x170 [ 695.449586][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.449586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.449586][ T72] netlink_rcv_skb+0x130/0x360 [ 695.449586][ T72] netlink_unicast+0x449/0x710 [ 695.449586][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.449586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.449586][ T72] ___sys_sendmsg+0xee/0x170 [ 695.449586][ T72] __sys_sendmsg+0xcd/0x170 [ 695.449586][ T72] do_syscall_64+0xc6/0x1e0 [ 695.449586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.449586][ T72] [ 695.451268][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 695.451268][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.451268][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.451268][ T72] ipv6_find_idev+0x102/0x170 [ 695.451268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.451268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.451268][ T72] netlink_rcv_skb+0x130/0x360 [ 695.451268][ T72] netlink_unicast+0x449/0x710 [ 695.451268][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.451268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.451268][ T72] ___sys_sendmsg+0xee/0x170 [ 695.451268][ T72] __sys_sendmsg+0xcd/0x170 [ 695.451268][ T72] do_syscall_64+0xc6/0x1e0 [ 695.451268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.451268][ T72] [ 695.453115][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 695.453409][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 695.453409][ T72] netdev_get_by_index+0x5e/0x80 [ 695.453409][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.453409][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.453409][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.453409][ T72] ipv6_add_addr+0x411/0x2000 [ 695.453409][ T72] inet6_addr_add+0x30e/0xa40 [ 695.453409][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.453409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.453409][ T72] netlink_rcv_skb+0x130/0x360 [ 695.453409][ T72] netlink_unicast+0x449/0x710 [ 695.453409][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.453409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.453409][ T72] ___sys_sendmsg+0xee/0x170 [ 695.453409][ T72] __sys_sendmsg+0xcd/0x170 [ 695.453409][ T72] do_syscall_64+0xc6/0x1e0 [ 695.453409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.453409][ T72] [ 695.455589][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 695.455589][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.455589][ T72] ipv6_find_idev+0x102/0x170 [ 695.455589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.455589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.455589][ T72] netlink_rcv_skb+0x130/0x360 [ 695.455589][ T72] netlink_unicast+0x449/0x710 [ 695.455589][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.455589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.455589][ T72] ___sys_sendmsg+0xee/0x170 [ 695.455589][ T72] __sys_sendmsg+0xcd/0x170 [ 695.455589][ T72] do_syscall_64+0xc6/0x1e0 [ 695.455589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.455589][ T72] [ 695.457266][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 695.457266][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.457266][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.457266][ T72] ipv6_find_idev+0x102/0x170 [ 695.457266][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.457266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.457266][ T72] netlink_rcv_skb+0x130/0x360 [ 695.457266][ T72] netlink_unicast+0x449/0x710 [ 695.457266][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.457266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.457266][ T72] ___sys_sendmsg+0xee/0x170 [ 695.457266][ T72] __sys_sendmsg+0xcd/0x170 [ 695.457266][ T72] do_syscall_64+0xc6/0x1e0 [ 695.457266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.457266][ T72] [ 695.459104][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 695.459400][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 695.459400][ T72] netdev_get_by_index+0x5e/0x80 [ 695.459400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.459400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.459400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.459400][ T72] ipv6_add_addr+0x411/0x2000 [ 695.459400][ T72] inet6_addr_add+0x30e/0xa40 [ 695.459400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.459400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.459400][ T72] netlink_rcv_skb+0x130/0x360 [ 695.459400][ T72] netlink_unicast+0x449/0x710 [ 695.459400][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.459400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.459400][ T72] ___sys_sendmsg+0xee/0x170 [ 695.459400][ T72] __sys_sendmsg+0xcd/0x170 [ 695.459400][ T72] do_syscall_64+0xc6/0x1e0 [ 695.459400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.459400][ T72] [ 695.461590][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 695.461590][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.461590][ T72] ipv6_find_idev+0x102/0x170 [ 695.461590][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.461590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.461590][ T72] netlink_rcv_skb+0x130/0x360 [ 695.461590][ T72] netlink_unicast+0x449/0x710 [ 695.461590][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.461590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.461590][ T72] ___sys_sendmsg+0xee/0x170 [ 695.461590][ T72] __sys_sendmsg+0xcd/0x170 [ 695.461590][ T72] do_syscall_64+0xc6/0x1e0 [ 695.461590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.461590][ T72] [ 695.463273][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 695.463273][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.463273][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.463273][ T72] ipv6_find_idev+0x102/0x170 [ 695.463273][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.463273][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.463273][ T72] netlink_rcv_skb+0x130/0x360 [ 695.463273][ T72] netlink_unicast+0x449/0x710 [ 695.463273][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.463273][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.463273][ T72] ___sys_sendmsg+0xee/0x170 [ 695.463273][ T72] __sys_sendmsg+0xcd/0x170 [ 695.463273][ T72] do_syscall_64+0xc6/0x1e0 [ 695.463273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.463273][ T72] [ 695.465055][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 695.465336][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 695.465336][ T72] netdev_get_by_index+0x5e/0x80 [ 695.465336][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.465336][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.465336][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.465336][ T72] ipv6_add_addr+0x411/0x2000 [ 695.465336][ T72] inet6_addr_add+0x30e/0xa40 [ 695.465336][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.465336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.465336][ T72] netlink_rcv_skb+0x130/0x360 [ 695.465336][ T72] netlink_unicast+0x449/0x710 [ 695.465336][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.465336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.465336][ T72] ___sys_sendmsg+0xee/0x170 [ 695.465336][ T72] __sys_sendmsg+0xcd/0x170 [ 695.465336][ T72] do_syscall_64+0xc6/0x1e0 [ 695.465336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.465336][ T72] [ 695.467479][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 695.467479][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.467479][ T72] ipv6_find_idev+0x102/0x170 [ 695.467479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.467479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.467479][ T72] netlink_rcv_skb+0x130/0x360 [ 695.467479][ T72] netlink_unicast+0x449/0x710 [ 695.467479][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.467479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.467479][ T72] ___sys_sendmsg+0xee/0x170 [ 695.467479][ T72] __sys_sendmsg+0xcd/0x170 [ 695.467479][ T72] do_syscall_64+0xc6/0x1e0 [ 695.467479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.467479][ T72] [ 695.469149][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 695.469149][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.469149][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.469149][ T72] ipv6_find_idev+0x102/0x170 [ 695.469149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.469149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.469149][ T72] netlink_rcv_skb+0x130/0x360 [ 695.469149][ T72] netlink_unicast+0x449/0x710 [ 695.469149][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.469149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.469149][ T72] ___sys_sendmsg+0xee/0x170 [ 695.469149][ T72] __sys_sendmsg+0xcd/0x170 [ 695.469149][ T72] do_syscall_64+0xc6/0x1e0 [ 695.469149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.469149][ T72] [ 695.471358][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 695.471639][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 695.471639][ T72] netdev_get_by_index+0x5e/0x80 [ 695.471639][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.471639][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.471639][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.471639][ T72] ipv6_add_addr+0x411/0x2000 [ 695.471639][ T72] inet6_addr_add+0x30e/0xa40 [ 695.471639][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.471639][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.471639][ T72] netlink_rcv_skb+0x130/0x360 [ 695.471639][ T72] netlink_unicast+0x449/0x710 [ 695.471639][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.471639][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.471639][ T72] ___sys_sendmsg+0xee/0x170 [ 695.471639][ T72] __sys_sendmsg+0xcd/0x170 [ 695.471639][ T72] do_syscall_64+0xc6/0x1e0 [ 695.471639][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.471639][ T72] [ 695.473772][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 695.473772][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.473772][ T72] ipv6_find_idev+0x102/0x170 [ 695.473772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.473772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.473772][ T72] netlink_rcv_skb+0x130/0x360 [ 695.473772][ T72] netlink_unicast+0x449/0x710 [ 695.473772][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.473772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.473772][ T72] ___sys_sendmsg+0xee/0x170 [ 695.473772][ T72] __sys_sendmsg+0xcd/0x170 [ 695.473772][ T72] do_syscall_64+0xc6/0x1e0 [ 695.473772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.473772][ T72] [ 695.475416][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 695.475416][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.475416][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.475416][ T72] ipv6_find_idev+0x102/0x170 [ 695.475416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.475416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.475416][ T72] netlink_rcv_skb+0x130/0x360 [ 695.475416][ T72] netlink_unicast+0x449/0x710 [ 695.475416][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.475416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.475416][ T72] ___sys_sendmsg+0xee/0x170 [ 695.475416][ T72] __sys_sendmsg+0xcd/0x170 [ 695.475416][ T72] do_syscall_64+0xc6/0x1e0 [ 695.475416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.475416][ T72] [ 695.477285][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 695.477572][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 695.477572][ T72] netdev_get_by_index+0x5e/0x80 [ 695.477572][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.477572][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.477572][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.477572][ T72] ipv6_add_addr+0x411/0x2000 [ 695.477572][ T72] inet6_addr_add+0x30e/0xa40 [ 695.477572][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.477572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.477572][ T72] netlink_rcv_skb+0x130/0x360 [ 695.477572][ T72] netlink_unicast+0x449/0x710 [ 695.477572][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.477572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.477572][ T72] ___sys_sendmsg+0xee/0x170 [ 695.477572][ T72] __sys_sendmsg+0xcd/0x170 [ 695.477572][ T72] do_syscall_64+0xc6/0x1e0 [ 695.477572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.477572][ T72] [ 695.479674][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 695.479674][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.479674][ T72] ipv6_find_idev+0x102/0x170 [ 695.479674][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.479674][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.479674][ T72] netlink_rcv_skb+0x130/0x360 [ 695.479674][ T72] netlink_unicast+0x449/0x710 [ 695.479674][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.479674][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.479674][ T72] ___sys_sendmsg+0xee/0x170 [ 695.479674][ T72] __sys_sendmsg+0xcd/0x170 [ 695.479674][ T72] do_syscall_64+0xc6/0x1e0 [ 695.479674][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.479674][ T72] [ 695.481498][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 695.481498][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.481498][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.481498][ T72] ipv6_find_idev+0x102/0x170 [ 695.481498][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.481498][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.481498][ T72] netlink_rcv_skb+0x130/0x360 [ 695.481498][ T72] netlink_unicast+0x449/0x710 [ 695.481498][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.481498][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.481498][ T72] ___sys_sendmsg+0xee/0x170 [ 695.481498][ T72] __sys_sendmsg+0xcd/0x170 [ 695.481498][ T72] do_syscall_64+0xc6/0x1e0 [ 695.481498][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.481498][ T72] [ 695.483654][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 695.483990][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 695.483990][ T72] netdev_get_by_index+0x5e/0x80 [ 695.483990][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.483990][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.483990][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.483990][ T72] ipv6_add_addr+0x411/0x2000 [ 695.483990][ T72] inet6_addr_add+0x30e/0xa40 [ 695.483990][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.483990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.483990][ T72] netlink_rcv_skb+0x130/0x360 [ 695.483990][ T72] netlink_unicast+0x449/0x710 [ 695.483990][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.483990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.483990][ T72] ___sys_sendmsg+0xee/0x170 [ 695.483990][ T72] __sys_sendmsg+0xcd/0x170 [ 695.483990][ T72] do_syscall_64+0xc6/0x1e0 [ 695.483990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.483990][ T72] [ 695.486271][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 695.486271][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.486271][ T72] ipv6_find_idev+0x102/0x170 [ 695.486271][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.486271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.486271][ T72] netlink_rcv_skb+0x130/0x360 [ 695.486271][ T72] netlink_unicast+0x449/0x710 [ 695.486271][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.486271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.486271][ T72] ___sys_sendmsg+0xee/0x170 [ 695.486271][ T72] __sys_sendmsg+0xcd/0x170 [ 695.486271][ T72] do_syscall_64+0xc6/0x1e0 [ 695.486271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.486271][ T72] [ 695.487992][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 695.487992][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.487992][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.487992][ T72] ipv6_find_idev+0x102/0x170 [ 695.487992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.487992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.487992][ T72] netlink_rcv_skb+0x130/0x360 [ 695.487992][ T72] netlink_unicast+0x449/0x710 [ 695.487992][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.487992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.487992][ T72] ___sys_sendmsg+0xee/0x170 [ 695.487992][ T72] __sys_sendmsg+0xcd/0x170 [ 695.487992][ T72] do_syscall_64+0xc6/0x1e0 [ 695.487992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.487992][ T72] [ 695.489867][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 695.490124][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 695.490124][ T72] netdev_get_by_index+0x5e/0x80 [ 695.490124][ T72] fib6_nh_init+0x3d8/0x15b0 [ 695.490124][ T72] ip6_route_info_create+0xf18/0x17d0 [ 695.490124][ T72] addrconf_f6i_alloc+0x244/0x410 [ 695.490124][ T72] ipv6_add_addr+0x411/0x2000 [ 695.490124][ T72] inet6_addr_add+0x30e/0xa40 [ 695.490124][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 695.490124][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.490124][ T72] netlink_rcv_skb+0x130/0x360 [ 695.490124][ T72] netlink_unicast+0x449/0x710 [ 695.490124][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.490124][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.490124][ T72] ___sys_sendmsg+0xee/0x170 [ 695.490124][ T72] __sys_sendmsg+0xcd/0x170 [ 695.490124][ T72] do_syscall_64+0xc6/0x1e0 [ 695.490124][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.490124][ T72] [ 695.492330][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 695.492330][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 695.492330][ T72] ipv6_find_idev+0x102/0x170 [ 695.492330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.492330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.492330][ T72] netlink_rcv_skb+0x130/0x360 [ 695.492330][ T72] netlink_unicast+0x449/0x710 [ 695.492330][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.492330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.492330][ T72] ___sys_sendmsg+0xee/0x170 [ 695.492330][ T72] __sys_sendmsg+0xcd/0x170 [ 695.492330][ T72] do_syscall_64+0xc6/0x1e0 [ 695.492330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.492330][ T72] [ 695.494080][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 695.494080][ T72] neigh_parms_alloc+0x1e5/0x510 [ 695.494080][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 695.494080][ T72] ipv6_find_idev+0x102/0x170 [ 695.494080][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 695.494080][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 695.494080][ T72] netlink_rcv_skb+0x130/0x360 [ 695.494080][ T72] netlink_unicast+0x449/0x710 [ 695.494080][ T72] netlink_sendmsg+0x723/0xbe0 [ 695.494080][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 695.494080][ T72] ___sys_sendmsg+0xee/0x170 [ 695.494080][ T72] __sys_sendmsg+0xcd/0x170 [ 695.494080][ T72] do_syscall_64+0xc6/0x1e0 [ 695.494080][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 695.494080][ T72] [ 705.734871][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 705.735344][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 705.735344][ T72] netdev_get_by_index+0x5e/0x80 [ 705.735344][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.735344][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.735344][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.735344][ T72] ipv6_add_addr+0x411/0x2000 [ 705.735344][ T72] inet6_addr_add+0x30e/0xa40 [ 705.735344][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.735344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.735344][ T72] netlink_rcv_skb+0x130/0x360 [ 705.735344][ T72] netlink_unicast+0x449/0x710 [ 705.735344][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.735344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.735344][ T72] ___sys_sendmsg+0xee/0x170 [ 705.735344][ T72] __sys_sendmsg+0xcd/0x170 [ 705.735344][ T72] do_syscall_64+0xc6/0x1e0 [ 705.735344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.735344][ T72] [ 705.737511][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 705.737511][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.737511][ T72] ipv6_find_idev+0x102/0x170 [ 705.737511][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.737511][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.737511][ T72] netlink_rcv_skb+0x130/0x360 [ 705.737511][ T72] netlink_unicast+0x449/0x710 [ 705.737511][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.737511][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.737511][ T72] ___sys_sendmsg+0xee/0x170 [ 705.737511][ T72] __sys_sendmsg+0xcd/0x170 [ 705.737511][ T72] do_syscall_64+0xc6/0x1e0 [ 705.737511][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.737511][ T72] [ 705.739172][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 705.739172][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.739172][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.739172][ T72] ipv6_find_idev+0x102/0x170 [ 705.739172][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.739172][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.739172][ T72] netlink_rcv_skb+0x130/0x360 [ 705.739172][ T72] netlink_unicast+0x449/0x710 [ 705.739172][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.739172][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.739172][ T72] ___sys_sendmsg+0xee/0x170 [ 705.739172][ T72] __sys_sendmsg+0xcd/0x170 [ 705.739172][ T72] do_syscall_64+0xc6/0x1e0 [ 705.739172][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.739172][ T72] [ 705.741111][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 705.741414][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 705.741414][ T72] netdev_get_by_index+0x5e/0x80 [ 705.741414][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.741414][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.741414][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.741414][ T72] ipv6_add_addr+0x411/0x2000 [ 705.741414][ T72] inet6_addr_add+0x30e/0xa40 [ 705.741414][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.741414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.741414][ T72] netlink_rcv_skb+0x130/0x360 [ 705.741414][ T72] netlink_unicast+0x449/0x710 [ 705.741414][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.741414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.741414][ T72] ___sys_sendmsg+0xee/0x170 [ 705.741414][ T72] __sys_sendmsg+0xcd/0x170 [ 705.741414][ T72] do_syscall_64+0xc6/0x1e0 [ 705.741414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.741414][ T72] [ 705.743658][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 705.743658][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.743658][ T72] ipv6_find_idev+0x102/0x170 [ 705.743658][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.743658][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.743658][ T72] netlink_rcv_skb+0x130/0x360 [ 705.743658][ T72] netlink_unicast+0x449/0x710 [ 705.743658][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.743658][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.743658][ T72] ___sys_sendmsg+0xee/0x170 [ 705.743658][ T72] __sys_sendmsg+0xcd/0x170 [ 705.743658][ T72] do_syscall_64+0xc6/0x1e0 [ 705.743658][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.743658][ T72] [ 705.745299][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 705.745299][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.745299][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.745299][ T72] ipv6_find_idev+0x102/0x170 [ 705.745299][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.745299][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.745299][ T72] netlink_rcv_skb+0x130/0x360 [ 705.745299][ T72] netlink_unicast+0x449/0x710 [ 705.745299][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.745299][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.745299][ T72] ___sys_sendmsg+0xee/0x170 [ 705.745299][ T72] __sys_sendmsg+0xcd/0x170 [ 705.745299][ T72] do_syscall_64+0xc6/0x1e0 [ 705.745299][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.745299][ T72] [ 705.747078][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 705.747366][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 705.747366][ T72] netdev_get_by_index+0x5e/0x80 [ 705.747366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.747366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.747366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.747366][ T72] ipv6_add_addr+0x411/0x2000 [ 705.747366][ T72] inet6_addr_add+0x30e/0xa40 [ 705.747366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.747366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.747366][ T72] netlink_rcv_skb+0x130/0x360 [ 705.747366][ T72] netlink_unicast+0x449/0x710 [ 705.747366][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.747366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.747366][ T72] ___sys_sendmsg+0xee/0x170 [ 705.747366][ T72] __sys_sendmsg+0xcd/0x170 [ 705.747366][ T72] do_syscall_64+0xc6/0x1e0 [ 705.747366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.747366][ T72] [ 705.749524][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 705.749524][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.749524][ T72] ipv6_find_idev+0x102/0x170 [ 705.749524][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.749524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.749524][ T72] netlink_rcv_skb+0x130/0x360 [ 705.749524][ T72] netlink_unicast+0x449/0x710 [ 705.749524][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.749524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.749524][ T72] ___sys_sendmsg+0xee/0x170 [ 705.749524][ T72] __sys_sendmsg+0xcd/0x170 [ 705.749524][ T72] do_syscall_64+0xc6/0x1e0 [ 705.749524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.749524][ T72] [ 705.751127][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 705.751127][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.751127][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.751127][ T72] ipv6_find_idev+0x102/0x170 [ 705.751127][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.751127][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.751127][ T72] netlink_rcv_skb+0x130/0x360 [ 705.751127][ T72] netlink_unicast+0x449/0x710 [ 705.751127][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.751127][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.751127][ T72] ___sys_sendmsg+0xee/0x170 [ 705.751127][ T72] __sys_sendmsg+0xcd/0x170 [ 705.751127][ T72] do_syscall_64+0xc6/0x1e0 [ 705.751127][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.751127][ T72] [ 705.752852][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 705.753137][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 705.753137][ T72] netdev_get_by_index+0x5e/0x80 [ 705.753137][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.753137][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.753137][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.753137][ T72] ipv6_add_addr+0x411/0x2000 [ 705.753137][ T72] inet6_addr_add+0x30e/0xa40 [ 705.753137][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.753137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.753137][ T72] netlink_rcv_skb+0x130/0x360 [ 705.753137][ T72] netlink_unicast+0x449/0x710 [ 705.753137][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.753137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.753137][ T72] ___sys_sendmsg+0xee/0x170 [ 705.753137][ T72] __sys_sendmsg+0xcd/0x170 [ 705.753137][ T72] do_syscall_64+0xc6/0x1e0 [ 705.753137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.753137][ T72] [ 705.755180][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 705.755180][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.755180][ T72] ipv6_find_idev+0x102/0x170 [ 705.755180][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.755180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.755180][ T72] netlink_rcv_skb+0x130/0x360 [ 705.755180][ T72] netlink_unicast+0x449/0x710 [ 705.755180][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.755180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.755180][ T72] ___sys_sendmsg+0xee/0x170 [ 705.755180][ T72] __sys_sendmsg+0xcd/0x170 [ 705.755180][ T72] do_syscall_64+0xc6/0x1e0 [ 705.755180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.755180][ T72] [ 705.756769][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 705.756769][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.756769][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.756769][ T72] ipv6_find_idev+0x102/0x170 [ 705.756769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.756769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.756769][ T72] netlink_rcv_skb+0x130/0x360 [ 705.756769][ T72] netlink_unicast+0x449/0x710 [ 705.756769][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.756769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.756769][ T72] ___sys_sendmsg+0xee/0x170 [ 705.756769][ T72] __sys_sendmsg+0xcd/0x170 [ 705.756769][ T72] do_syscall_64+0xc6/0x1e0 [ 705.756769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.756769][ T72] [ 705.759056][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 705.759713][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 705.759713][ T72] netdev_get_by_index+0x5e/0x80 [ 705.759713][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.759713][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.759713][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.759713][ T72] ipv6_add_addr+0x411/0x2000 [ 705.759713][ T72] inet6_addr_add+0x30e/0xa40 [ 705.759713][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.759713][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.759713][ T72] netlink_rcv_skb+0x130/0x360 [ 705.759713][ T72] netlink_unicast+0x449/0x710 [ 705.759713][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.759713][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.759713][ T72] ___sys_sendmsg+0xee/0x170 [ 705.759713][ T72] __sys_sendmsg+0xcd/0x170 [ 705.759713][ T72] do_syscall_64+0xc6/0x1e0 [ 705.759713][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.759713][ T72] [ 705.761820][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 705.761820][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.761820][ T72] ipv6_find_idev+0x102/0x170 [ 705.761820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.761820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.761820][ T72] netlink_rcv_skb+0x130/0x360 [ 705.761820][ T72] netlink_unicast+0x449/0x710 [ 705.761820][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.761820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.761820][ T72] ___sys_sendmsg+0xee/0x170 [ 705.761820][ T72] __sys_sendmsg+0xcd/0x170 [ 705.761820][ T72] do_syscall_64+0xc6/0x1e0 [ 705.761820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.761820][ T72] [ 705.763476][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 705.763476][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.763476][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.763476][ T72] ipv6_find_idev+0x102/0x170 [ 705.763476][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.763476][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.763476][ T72] netlink_rcv_skb+0x130/0x360 [ 705.763476][ T72] netlink_unicast+0x449/0x710 [ 705.763476][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.763476][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.763476][ T72] ___sys_sendmsg+0xee/0x170 [ 705.763476][ T72] __sys_sendmsg+0xcd/0x170 [ 705.763476][ T72] do_syscall_64+0xc6/0x1e0 [ 705.763476][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.763476][ T72] [ 705.765287][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 705.765557][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 705.765557][ T72] netdev_get_by_index+0x5e/0x80 [ 705.765557][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.765557][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.765557][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.765557][ T72] ipv6_add_addr+0x411/0x2000 [ 705.765557][ T72] inet6_addr_add+0x30e/0xa40 [ 705.765557][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.765557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.765557][ T72] netlink_rcv_skb+0x130/0x360 [ 705.765557][ T72] netlink_unicast+0x449/0x710 [ 705.765557][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.765557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.765557][ T72] ___sys_sendmsg+0xee/0x170 [ 705.765557][ T72] __sys_sendmsg+0xcd/0x170 [ 705.765557][ T72] do_syscall_64+0xc6/0x1e0 [ 705.765557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.765557][ T72] [ 705.767629][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 705.767629][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.767629][ T72] ipv6_find_idev+0x102/0x170 [ 705.767629][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.767629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.767629][ T72] netlink_rcv_skb+0x130/0x360 [ 705.767629][ T72] netlink_unicast+0x449/0x710 [ 705.767629][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.767629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.767629][ T72] ___sys_sendmsg+0xee/0x170 [ 705.767629][ T72] __sys_sendmsg+0xcd/0x170 [ 705.767629][ T72] do_syscall_64+0xc6/0x1e0 [ 705.767629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.767629][ T72] [ 705.769269][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 705.769269][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.769269][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.769269][ T72] ipv6_find_idev+0x102/0x170 [ 705.769269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.769269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.769269][ T72] netlink_rcv_skb+0x130/0x360 [ 705.769269][ T72] netlink_unicast+0x449/0x710 [ 705.769269][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.769269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.769269][ T72] ___sys_sendmsg+0xee/0x170 [ 705.769269][ T72] __sys_sendmsg+0xcd/0x170 [ 705.769269][ T72] do_syscall_64+0xc6/0x1e0 [ 705.769269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.769269][ T72] [ 705.771458][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 705.771804][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 705.771804][ T72] netdev_get_by_index+0x5e/0x80 [ 705.771804][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.771804][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.771804][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.771804][ T72] ipv6_add_addr+0x411/0x2000 [ 705.771804][ T72] inet6_addr_add+0x30e/0xa40 [ 705.771804][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.771804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.771804][ T72] netlink_rcv_skb+0x130/0x360 [ 705.771804][ T72] netlink_unicast+0x449/0x710 [ 705.771804][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.771804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.771804][ T72] ___sys_sendmsg+0xee/0x170 [ 705.771804][ T72] __sys_sendmsg+0xcd/0x170 [ 705.771804][ T72] do_syscall_64+0xc6/0x1e0 [ 705.771804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.771804][ T72] [ 705.774236][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 705.774236][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.774236][ T72] ipv6_find_idev+0x102/0x170 [ 705.774236][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.774236][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.774236][ T72] netlink_rcv_skb+0x130/0x360 [ 705.774236][ T72] netlink_unicast+0x449/0x710 [ 705.774236][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.774236][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.774236][ T72] ___sys_sendmsg+0xee/0x170 [ 705.774236][ T72] __sys_sendmsg+0xcd/0x170 [ 705.774236][ T72] do_syscall_64+0xc6/0x1e0 [ 705.774236][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.774236][ T72] [ 705.776142][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 705.776142][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.776142][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.776142][ T72] ipv6_find_idev+0x102/0x170 [ 705.776142][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.776142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.776142][ T72] netlink_rcv_skb+0x130/0x360 [ 705.776142][ T72] netlink_unicast+0x449/0x710 [ 705.776142][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.776142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.776142][ T72] ___sys_sendmsg+0xee/0x170 [ 705.776142][ T72] __sys_sendmsg+0xcd/0x170 [ 705.776142][ T72] do_syscall_64+0xc6/0x1e0 [ 705.776142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.776142][ T72] [ 705.778329][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 705.778673][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 705.778673][ T72] netdev_get_by_index+0x5e/0x80 [ 705.778673][ T72] fib6_nh_init+0x3d8/0x15b0 [ 705.778673][ T72] ip6_route_info_create+0xf18/0x17d0 [ 705.778673][ T72] addrconf_f6i_alloc+0x244/0x410 [ 705.778673][ T72] ipv6_add_addr+0x411/0x2000 [ 705.778673][ T72] inet6_addr_add+0x30e/0xa40 [ 705.778673][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 705.778673][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.778673][ T72] netlink_rcv_skb+0x130/0x360 [ 705.778673][ T72] netlink_unicast+0x449/0x710 [ 705.778673][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.778673][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.778673][ T72] ___sys_sendmsg+0xee/0x170 [ 705.778673][ T72] __sys_sendmsg+0xcd/0x170 [ 705.778673][ T72] do_syscall_64+0xc6/0x1e0 [ 705.778673][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.778673][ T72] [ 705.781036][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 705.781036][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 705.781036][ T72] ipv6_find_idev+0x102/0x170 [ 705.781036][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.781036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.781036][ T72] netlink_rcv_skb+0x130/0x360 [ 705.781036][ T72] netlink_unicast+0x449/0x710 [ 705.781036][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.781036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.781036][ T72] ___sys_sendmsg+0xee/0x170 [ 705.781036][ T72] __sys_sendmsg+0xcd/0x170 [ 705.781036][ T72] do_syscall_64+0xc6/0x1e0 [ 705.781036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.781036][ T72] [ 705.782948][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 705.782948][ T72] neigh_parms_alloc+0x1e5/0x510 [ 705.782948][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 705.782948][ T72] ipv6_find_idev+0x102/0x170 [ 705.782948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 705.782948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 705.782948][ T72] netlink_rcv_skb+0x130/0x360 [ 705.782948][ T72] netlink_unicast+0x449/0x710 [ 705.782948][ T72] netlink_sendmsg+0x723/0xbe0 [ 705.782948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 705.782948][ T72] ___sys_sendmsg+0xee/0x170 [ 705.782948][ T72] __sys_sendmsg+0xcd/0x170 [ 705.782948][ T72] do_syscall_64+0xc6/0x1e0 [ 705.782948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 705.782948][ T72] [ 715.806866][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 715.807320][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 715.807320][ T72] netdev_get_by_index+0x5e/0x80 [ 715.807320][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.807320][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.807320][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.807320][ T72] ipv6_add_addr+0x411/0x2000 [ 715.807320][ T72] inet6_addr_add+0x30e/0xa40 [ 715.807320][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.807320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.807320][ T72] netlink_rcv_skb+0x130/0x360 [ 715.807320][ T72] netlink_unicast+0x449/0x710 [ 715.807320][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.807320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.807320][ T72] ___sys_sendmsg+0xee/0x170 [ 715.807320][ T72] __sys_sendmsg+0xcd/0x170 [ 715.807320][ T72] do_syscall_64+0xc6/0x1e0 [ 715.807320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.807320][ T72] [ 715.809550][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 715.809550][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.809550][ T72] ipv6_find_idev+0x102/0x170 [ 715.809550][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.809550][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.809550][ T72] netlink_rcv_skb+0x130/0x360 [ 715.809550][ T72] netlink_unicast+0x449/0x710 [ 715.809550][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.809550][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.809550][ T72] ___sys_sendmsg+0xee/0x170 [ 715.809550][ T72] __sys_sendmsg+0xcd/0x170 [ 715.809550][ T72] do_syscall_64+0xc6/0x1e0 [ 715.809550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.809550][ T72] [ 715.811238][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 715.811238][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.811238][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.811238][ T72] ipv6_find_idev+0x102/0x170 [ 715.811238][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.811238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.811238][ T72] netlink_rcv_skb+0x130/0x360 [ 715.811238][ T72] netlink_unicast+0x449/0x710 [ 715.811238][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.811238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.811238][ T72] ___sys_sendmsg+0xee/0x170 [ 715.811238][ T72] __sys_sendmsg+0xcd/0x170 [ 715.811238][ T72] do_syscall_64+0xc6/0x1e0 [ 715.811238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.811238][ T72] [ 715.813102][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 715.813395][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 715.813395][ T72] netdev_get_by_index+0x5e/0x80 [ 715.813395][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.813395][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.813395][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.813395][ T72] ipv6_add_addr+0x411/0x2000 [ 715.813395][ T72] inet6_addr_add+0x30e/0xa40 [ 715.813395][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.813395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.813395][ T72] netlink_rcv_skb+0x130/0x360 [ 715.813395][ T72] netlink_unicast+0x449/0x710 [ 715.813395][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.813395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.813395][ T72] ___sys_sendmsg+0xee/0x170 [ 715.813395][ T72] __sys_sendmsg+0xcd/0x170 [ 715.813395][ T72] do_syscall_64+0xc6/0x1e0 [ 715.813395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.813395][ T72] [ 715.815577][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 715.815577][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.815577][ T72] ipv6_find_idev+0x102/0x170 [ 715.815577][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.815577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.815577][ T72] netlink_rcv_skb+0x130/0x360 [ 715.815577][ T72] netlink_unicast+0x449/0x710 [ 715.815577][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.815577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.815577][ T72] ___sys_sendmsg+0xee/0x170 [ 715.815577][ T72] __sys_sendmsg+0xcd/0x170 [ 715.815577][ T72] do_syscall_64+0xc6/0x1e0 [ 715.815577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.815577][ T72] [ 715.817256][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 715.817256][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.817256][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.817256][ T72] ipv6_find_idev+0x102/0x170 [ 715.817256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.817256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.817256][ T72] netlink_rcv_skb+0x130/0x360 [ 715.817256][ T72] netlink_unicast+0x449/0x710 [ 715.817256][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.817256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.817256][ T72] ___sys_sendmsg+0xee/0x170 [ 715.817256][ T72] __sys_sendmsg+0xcd/0x170 [ 715.817256][ T72] do_syscall_64+0xc6/0x1e0 [ 715.817256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.817256][ T72] [ 715.819119][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 715.819403][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 715.819403][ T72] netdev_get_by_index+0x5e/0x80 [ 715.819403][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.819403][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.819403][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.819403][ T72] ipv6_add_addr+0x411/0x2000 [ 715.819403][ T72] inet6_addr_add+0x30e/0xa40 [ 715.819403][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.819403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.819403][ T72] netlink_rcv_skb+0x130/0x360 [ 715.819403][ T72] netlink_unicast+0x449/0x710 [ 715.819403][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.819403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.819403][ T72] ___sys_sendmsg+0xee/0x170 [ 715.819403][ T72] __sys_sendmsg+0xcd/0x170 [ 715.819403][ T72] do_syscall_64+0xc6/0x1e0 [ 715.819403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.819403][ T72] [ 715.821586][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 715.821586][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.821586][ T72] ipv6_find_idev+0x102/0x170 [ 715.821586][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.821586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.821586][ T72] netlink_rcv_skb+0x130/0x360 [ 715.821586][ T72] netlink_unicast+0x449/0x710 [ 715.821586][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.821586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.821586][ T72] ___sys_sendmsg+0xee/0x170 [ 715.821586][ T72] __sys_sendmsg+0xcd/0x170 [ 715.821586][ T72] do_syscall_64+0xc6/0x1e0 [ 715.821586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.821586][ T72] [ 715.823261][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 715.823261][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.823261][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.823261][ T72] ipv6_find_idev+0x102/0x170 [ 715.823261][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.823261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.823261][ T72] netlink_rcv_skb+0x130/0x360 [ 715.823261][ T72] netlink_unicast+0x449/0x710 [ 715.823261][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.823261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.823261][ T72] ___sys_sendmsg+0xee/0x170 [ 715.823261][ T72] __sys_sendmsg+0xcd/0x170 [ 715.823261][ T72] do_syscall_64+0xc6/0x1e0 [ 715.823261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.823261][ T72] [ 715.825456][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 715.825744][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 715.825744][ T72] netdev_get_by_index+0x5e/0x80 [ 715.825744][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.825744][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.825744][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.825744][ T72] ipv6_add_addr+0x411/0x2000 [ 715.825744][ T72] inet6_addr_add+0x30e/0xa40 [ 715.825744][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.825744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.825744][ T72] netlink_rcv_skb+0x130/0x360 [ 715.825744][ T72] netlink_unicast+0x449/0x710 [ 715.825744][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.825744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.825744][ T72] ___sys_sendmsg+0xee/0x170 [ 715.825744][ T72] __sys_sendmsg+0xcd/0x170 [ 715.825744][ T72] do_syscall_64+0xc6/0x1e0 [ 715.825744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.825744][ T72] [ 715.827927][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 715.827927][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.827927][ T72] ipv6_find_idev+0x102/0x170 [ 715.827927][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.827927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.827927][ T72] netlink_rcv_skb+0x130/0x360 [ 715.827927][ T72] netlink_unicast+0x449/0x710 [ 715.827927][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.827927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.827927][ T72] ___sys_sendmsg+0xee/0x170 [ 715.827927][ T72] __sys_sendmsg+0xcd/0x170 [ 715.827927][ T72] do_syscall_64+0xc6/0x1e0 [ 715.827927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.827927][ T72] [ 715.829603][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 715.829603][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.829603][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.829603][ T72] ipv6_find_idev+0x102/0x170 [ 715.829603][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.829603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.829603][ T72] netlink_rcv_skb+0x130/0x360 [ 715.829603][ T72] netlink_unicast+0x449/0x710 [ 715.829603][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.829603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.829603][ T72] ___sys_sendmsg+0xee/0x170 [ 715.829603][ T72] __sys_sendmsg+0xcd/0x170 [ 715.829603][ T72] do_syscall_64+0xc6/0x1e0 [ 715.829603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.829603][ T72] [ 715.831438][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 715.831722][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 715.831722][ T72] netdev_get_by_index+0x5e/0x80 [ 715.831722][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.831722][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.831722][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.831722][ T72] ipv6_add_addr+0x411/0x2000 [ 715.831722][ T72] inet6_addr_add+0x30e/0xa40 [ 715.831722][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.831722][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.831722][ T72] netlink_rcv_skb+0x130/0x360 [ 715.831722][ T72] netlink_unicast+0x449/0x710 [ 715.831722][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.831722][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.831722][ T72] ___sys_sendmsg+0xee/0x170 [ 715.831722][ T72] __sys_sendmsg+0xcd/0x170 [ 715.831722][ T72] do_syscall_64+0xc6/0x1e0 [ 715.831722][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.831722][ T72] [ 715.833908][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 715.833908][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.833908][ T72] ipv6_find_idev+0x102/0x170 [ 715.833908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.833908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.833908][ T72] netlink_rcv_skb+0x130/0x360 [ 715.833908][ T72] netlink_unicast+0x449/0x710 [ 715.833908][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.833908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.833908][ T72] ___sys_sendmsg+0xee/0x170 [ 715.833908][ T72] __sys_sendmsg+0xcd/0x170 [ 715.833908][ T72] do_syscall_64+0xc6/0x1e0 [ 715.833908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.833908][ T72] [ 715.835655][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 715.835655][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.835655][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.835655][ T72] ipv6_find_idev+0x102/0x170 [ 715.835655][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.835655][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.835655][ T72] netlink_rcv_skb+0x130/0x360 [ 715.835655][ T72] netlink_unicast+0x449/0x710 [ 715.835655][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.835655][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.835655][ T72] ___sys_sendmsg+0xee/0x170 [ 715.835655][ T72] __sys_sendmsg+0xcd/0x170 [ 715.835655][ T72] do_syscall_64+0xc6/0x1e0 [ 715.835655][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.835655][ T72] [ 715.837762][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 715.838051][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 715.838051][ T72] netdev_get_by_index+0x5e/0x80 [ 715.838051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.838051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.838051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.838051][ T72] ipv6_add_addr+0x411/0x2000 [ 715.838051][ T72] inet6_addr_add+0x30e/0xa40 [ 715.838051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.838051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.838051][ T72] netlink_rcv_skb+0x130/0x360 [ 715.838051][ T72] netlink_unicast+0x449/0x710 [ 715.838051][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.838051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.838051][ T72] ___sys_sendmsg+0xee/0x170 [ 715.838051][ T72] __sys_sendmsg+0xcd/0x170 [ 715.838051][ T72] do_syscall_64+0xc6/0x1e0 [ 715.838051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.838051][ T72] [ 715.840533][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 715.840533][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.840533][ T72] ipv6_find_idev+0x102/0x170 [ 715.840533][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.840533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.840533][ T72] netlink_rcv_skb+0x130/0x360 [ 715.840533][ T72] netlink_unicast+0x449/0x710 [ 715.840533][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.840533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.840533][ T72] ___sys_sendmsg+0xee/0x170 [ 715.840533][ T72] __sys_sendmsg+0xcd/0x170 [ 715.840533][ T72] do_syscall_64+0xc6/0x1e0 [ 715.840533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.840533][ T72] [ 715.842395][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 715.842395][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.842395][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.842395][ T72] ipv6_find_idev+0x102/0x170 [ 715.842395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.842395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.842395][ T72] netlink_rcv_skb+0x130/0x360 [ 715.842395][ T72] netlink_unicast+0x449/0x710 [ 715.842395][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.842395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.842395][ T72] ___sys_sendmsg+0xee/0x170 [ 715.842395][ T72] __sys_sendmsg+0xcd/0x170 [ 715.842395][ T72] do_syscall_64+0xc6/0x1e0 [ 715.842395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.842395][ T72] [ 715.844464][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 715.844754][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 715.844754][ T72] netdev_get_by_index+0x5e/0x80 [ 715.844754][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.844754][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.844754][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.844754][ T72] ipv6_add_addr+0x411/0x2000 [ 715.844754][ T72] inet6_addr_add+0x30e/0xa40 [ 715.844754][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.844754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.844754][ T72] netlink_rcv_skb+0x130/0x360 [ 715.844754][ T72] netlink_unicast+0x449/0x710 [ 715.844754][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.844754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.844754][ T72] ___sys_sendmsg+0xee/0x170 [ 715.844754][ T72] __sys_sendmsg+0xcd/0x170 [ 715.844754][ T72] do_syscall_64+0xc6/0x1e0 [ 715.844754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.844754][ T72] [ 715.847178][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 715.847178][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.847178][ T72] ipv6_find_idev+0x102/0x170 [ 715.847178][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.847178][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.847178][ T72] netlink_rcv_skb+0x130/0x360 [ 715.847178][ T72] netlink_unicast+0x449/0x710 [ 715.847178][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.847178][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.847178][ T72] ___sys_sendmsg+0xee/0x170 [ 715.847178][ T72] __sys_sendmsg+0xcd/0x170 [ 715.847178][ T72] do_syscall_64+0xc6/0x1e0 [ 715.847178][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.847178][ T72] [ 715.849042][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 715.849042][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.849042][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.849042][ T72] ipv6_find_idev+0x102/0x170 [ 715.849042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.849042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.849042][ T72] netlink_rcv_skb+0x130/0x360 [ 715.849042][ T72] netlink_unicast+0x449/0x710 [ 715.849042][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.849042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.849042][ T72] ___sys_sendmsg+0xee/0x170 [ 715.849042][ T72] __sys_sendmsg+0xcd/0x170 [ 715.849042][ T72] do_syscall_64+0xc6/0x1e0 [ 715.849042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.849042][ T72] [ 715.851162][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 715.851445][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 715.851445][ T72] netdev_get_by_index+0x5e/0x80 [ 715.851445][ T72] fib6_nh_init+0x3d8/0x15b0 [ 715.851445][ T72] ip6_route_info_create+0xf18/0x17d0 [ 715.851445][ T72] addrconf_f6i_alloc+0x244/0x410 [ 715.851445][ T72] ipv6_add_addr+0x411/0x2000 [ 715.851445][ T72] inet6_addr_add+0x30e/0xa40 [ 715.851445][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 715.851445][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.851445][ T72] netlink_rcv_skb+0x130/0x360 [ 715.851445][ T72] netlink_unicast+0x449/0x710 [ 715.851445][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.851445][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.851445][ T72] ___sys_sendmsg+0xee/0x170 [ 715.851445][ T72] __sys_sendmsg+0xcd/0x170 [ 715.851445][ T72] do_syscall_64+0xc6/0x1e0 [ 715.851445][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.851445][ T72] [ 715.853868][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 715.853868][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 715.853868][ T72] ipv6_find_idev+0x102/0x170 [ 715.853868][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.853868][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.853868][ T72] netlink_rcv_skb+0x130/0x360 [ 715.853868][ T72] netlink_unicast+0x449/0x710 [ 715.853868][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.853868][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.853868][ T72] ___sys_sendmsg+0xee/0x170 [ 715.853868][ T72] __sys_sendmsg+0xcd/0x170 [ 715.853868][ T72] do_syscall_64+0xc6/0x1e0 [ 715.853868][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.853868][ T72] [ 715.855673][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 715.855673][ T72] neigh_parms_alloc+0x1e5/0x510 [ 715.855673][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 715.855673][ T72] ipv6_find_idev+0x102/0x170 [ 715.855673][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 715.855673][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 715.855673][ T72] netlink_rcv_skb+0x130/0x360 [ 715.855673][ T72] netlink_unicast+0x449/0x710 [ 715.855673][ T72] netlink_sendmsg+0x723/0xbe0 [ 715.855673][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 715.855673][ T72] ___sys_sendmsg+0xee/0x170 [ 715.855673][ T72] __sys_sendmsg+0xcd/0x170 [ 715.855673][ T72] do_syscall_64+0xc6/0x1e0 [ 715.855673][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 715.855673][ T72] [ 726.054851][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 726.055295][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 726.055295][ T72] netdev_get_by_index+0x5e/0x80 [ 726.055295][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.055295][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.055295][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.055295][ T72] ipv6_add_addr+0x411/0x2000 [ 726.055295][ T72] inet6_addr_add+0x30e/0xa40 [ 726.055295][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.055295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.055295][ T72] netlink_rcv_skb+0x130/0x360 [ 726.055295][ T72] netlink_unicast+0x449/0x710 [ 726.055295][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.055295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.055295][ T72] ___sys_sendmsg+0xee/0x170 [ 726.055295][ T72] __sys_sendmsg+0xcd/0x170 [ 726.055295][ T72] do_syscall_64+0xc6/0x1e0 [ 726.055295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.055295][ T72] [ 726.057492][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 726.057492][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.057492][ T72] ipv6_find_idev+0x102/0x170 [ 726.057492][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.057492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.057492][ T72] netlink_rcv_skb+0x130/0x360 [ 726.057492][ T72] netlink_unicast+0x449/0x710 [ 726.057492][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.057492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.057492][ T72] ___sys_sendmsg+0xee/0x170 [ 726.057492][ T72] __sys_sendmsg+0xcd/0x170 [ 726.057492][ T72] do_syscall_64+0xc6/0x1e0 [ 726.057492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.057492][ T72] [ 726.059190][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 726.059190][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.059190][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.059190][ T72] ipv6_find_idev+0x102/0x170 [ 726.059190][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.059190][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.059190][ T72] netlink_rcv_skb+0x130/0x360 [ 726.059190][ T72] netlink_unicast+0x449/0x710 [ 726.059190][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.059190][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.059190][ T72] ___sys_sendmsg+0xee/0x170 [ 726.059190][ T72] __sys_sendmsg+0xcd/0x170 [ 726.059190][ T72] do_syscall_64+0xc6/0x1e0 [ 726.059190][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.059190][ T72] [ 726.061598][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 726.062076][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 726.062076][ T72] netdev_get_by_index+0x5e/0x80 [ 726.062076][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.062076][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.062076][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.062076][ T72] ipv6_add_addr+0x411/0x2000 [ 726.062076][ T72] inet6_addr_add+0x30e/0xa40 [ 726.062076][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.062076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.062076][ T72] netlink_rcv_skb+0x130/0x360 [ 726.062076][ T72] netlink_unicast+0x449/0x710 [ 726.062076][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.062076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.062076][ T72] ___sys_sendmsg+0xee/0x170 [ 726.062076][ T72] __sys_sendmsg+0xcd/0x170 [ 726.062076][ T72] do_syscall_64+0xc6/0x1e0 [ 726.062076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.062076][ T72] [ 726.064891][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 726.064891][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.064891][ T72] ipv6_find_idev+0x102/0x170 [ 726.064891][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.064891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.064891][ T72] netlink_rcv_skb+0x130/0x360 [ 726.064891][ T72] netlink_unicast+0x449/0x710 [ 726.064891][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.064891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.064891][ T72] ___sys_sendmsg+0xee/0x170 [ 726.064891][ T72] __sys_sendmsg+0xcd/0x170 [ 726.064891][ T72] do_syscall_64+0xc6/0x1e0 [ 726.064891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.064891][ T72] [ 726.066576][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 726.066576][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.066576][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.066576][ T72] ipv6_find_idev+0x102/0x170 [ 726.066576][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.066576][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.066576][ T72] netlink_rcv_skb+0x130/0x360 [ 726.066576][ T72] netlink_unicast+0x449/0x710 [ 726.066576][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.066576][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.066576][ T72] ___sys_sendmsg+0xee/0x170 [ 726.066576][ T72] __sys_sendmsg+0xcd/0x170 [ 726.066576][ T72] do_syscall_64+0xc6/0x1e0 [ 726.066576][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.066576][ T72] [ 726.068967][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 726.069405][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 726.069405][ T72] netdev_get_by_index+0x5e/0x80 [ 726.069405][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.069405][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.069405][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.069405][ T72] ipv6_add_addr+0x411/0x2000 [ 726.069405][ T72] inet6_addr_add+0x30e/0xa40 [ 726.069405][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.069405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.069405][ T72] netlink_rcv_skb+0x130/0x360 [ 726.069405][ T72] netlink_unicast+0x449/0x710 [ 726.069405][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.069405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.069405][ T72] ___sys_sendmsg+0xee/0x170 [ 726.069405][ T72] __sys_sendmsg+0xcd/0x170 [ 726.069405][ T72] do_syscall_64+0xc6/0x1e0 [ 726.069405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.069405][ T72] [ 726.072641][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 726.072641][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.072641][ T72] ipv6_find_idev+0x102/0x170 [ 726.072641][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.072641][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.072641][ T72] netlink_rcv_skb+0x130/0x360 [ 726.072641][ T72] netlink_unicast+0x449/0x710 [ 726.072641][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.072641][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.072641][ T72] ___sys_sendmsg+0xee/0x170 [ 726.072641][ T72] __sys_sendmsg+0xcd/0x170 [ 726.072641][ T72] do_syscall_64+0xc6/0x1e0 [ 726.072641][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.072641][ T72] [ 726.075115][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 726.075115][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.075115][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.075115][ T72] ipv6_find_idev+0x102/0x170 [ 726.075115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.075115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.075115][ T72] netlink_rcv_skb+0x130/0x360 [ 726.075115][ T72] netlink_unicast+0x449/0x710 [ 726.075115][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.075115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.075115][ T72] ___sys_sendmsg+0xee/0x170 [ 726.075115][ T72] __sys_sendmsg+0xcd/0x170 [ 726.075115][ T72] do_syscall_64+0xc6/0x1e0 [ 726.075115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.075115][ T72] [ 726.077772][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 726.078184][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 726.078184][ T72] netdev_get_by_index+0x5e/0x80 [ 726.078184][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.078184][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.078184][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.078184][ T72] ipv6_add_addr+0x411/0x2000 [ 726.078184][ T72] inet6_addr_add+0x30e/0xa40 [ 726.078184][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.078184][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.078184][ T72] netlink_rcv_skb+0x130/0x360 [ 726.078184][ T72] netlink_unicast+0x449/0x710 [ 726.078184][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.078184][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.078184][ T72] ___sys_sendmsg+0xee/0x170 [ 726.078184][ T72] __sys_sendmsg+0xcd/0x170 [ 726.078184][ T72] do_syscall_64+0xc6/0x1e0 [ 726.078184][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.078184][ T72] [ 726.081292][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 726.081292][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.081292][ T72] ipv6_find_idev+0x102/0x170 [ 726.081292][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.081292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.081292][ T72] netlink_rcv_skb+0x130/0x360 [ 726.081292][ T72] netlink_unicast+0x449/0x710 [ 726.081292][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.081292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.081292][ T72] ___sys_sendmsg+0xee/0x170 [ 726.081292][ T72] __sys_sendmsg+0xcd/0x170 [ 726.081292][ T72] do_syscall_64+0xc6/0x1e0 [ 726.081292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.081292][ T72] [ 726.083818][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 726.083818][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.083818][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.083818][ T72] ipv6_find_idev+0x102/0x170 [ 726.083818][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.083818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.083818][ T72] netlink_rcv_skb+0x130/0x360 [ 726.083818][ T72] netlink_unicast+0x449/0x710 [ 726.083818][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.083818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.083818][ T72] ___sys_sendmsg+0xee/0x170 [ 726.083818][ T72] __sys_sendmsg+0xcd/0x170 [ 726.083818][ T72] do_syscall_64+0xc6/0x1e0 [ 726.083818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.083818][ T72] [ 726.087424][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 726.088521][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 726.088521][ T72] netdev_get_by_index+0x5e/0x80 [ 726.088521][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.088521][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.088521][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.088521][ T72] ipv6_add_addr+0x411/0x2000 [ 726.088521][ T72] inet6_addr_add+0x30e/0xa40 [ 726.088521][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.088521][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.088521][ T72] netlink_rcv_skb+0x130/0x360 [ 726.088521][ T72] netlink_unicast+0x449/0x710 [ 726.088521][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.088521][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.088521][ T72] ___sys_sendmsg+0xee/0x170 [ 726.088521][ T72] __sys_sendmsg+0xcd/0x170 [ 726.088521][ T72] do_syscall_64+0xc6/0x1e0 [ 726.088521][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.088521][ T72] [ 726.091805][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 726.091805][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.091805][ T72] ipv6_find_idev+0x102/0x170 [ 726.091805][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.091805][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.091805][ T72] netlink_rcv_skb+0x130/0x360 [ 726.091805][ T72] netlink_unicast+0x449/0x710 [ 726.091805][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.091805][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.091805][ T72] ___sys_sendmsg+0xee/0x170 [ 726.091805][ T72] __sys_sendmsg+0xcd/0x170 [ 726.091805][ T72] do_syscall_64+0xc6/0x1e0 [ 726.091805][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.091805][ T72] [ 726.094353][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 726.094353][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.094353][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.094353][ T72] ipv6_find_idev+0x102/0x170 [ 726.094353][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.094353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.094353][ T72] netlink_rcv_skb+0x130/0x360 [ 726.094353][ T72] netlink_unicast+0x449/0x710 [ 726.094353][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.094353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.094353][ T72] ___sys_sendmsg+0xee/0x170 [ 726.094353][ T72] __sys_sendmsg+0xcd/0x170 [ 726.094353][ T72] do_syscall_64+0xc6/0x1e0 [ 726.094353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.094353][ T72] [ 726.097029][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 726.097490][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 726.097490][ T72] netdev_get_by_index+0x5e/0x80 [ 726.097490][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.097490][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.097490][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.097490][ T72] ipv6_add_addr+0x411/0x2000 [ 726.097490][ T72] inet6_addr_add+0x30e/0xa40 [ 726.097490][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.097490][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.097490][ T72] netlink_rcv_skb+0x130/0x360 [ 726.097490][ T72] netlink_unicast+0x449/0x710 [ 726.097490][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.097490][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.097490][ T72] ___sys_sendmsg+0xee/0x170 [ 726.097490][ T72] __sys_sendmsg+0xcd/0x170 [ 726.097490][ T72] do_syscall_64+0xc6/0x1e0 [ 726.097490][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.097490][ T72] [ 726.100638][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 726.100638][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.100638][ T72] ipv6_find_idev+0x102/0x170 [ 726.100638][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.100638][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.100638][ T72] netlink_rcv_skb+0x130/0x360 [ 726.100638][ T72] netlink_unicast+0x449/0x710 [ 726.100638][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.100638][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.100638][ T72] ___sys_sendmsg+0xee/0x170 [ 726.100638][ T72] __sys_sendmsg+0xcd/0x170 [ 726.100638][ T72] do_syscall_64+0xc6/0x1e0 [ 726.100638][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.100638][ T72] [ 726.103205][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 726.103205][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.103205][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.103205][ T72] ipv6_find_idev+0x102/0x170 [ 726.103205][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.103205][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.103205][ T72] netlink_rcv_skb+0x130/0x360 [ 726.103205][ T72] netlink_unicast+0x449/0x710 [ 726.103205][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.103205][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.103205][ T72] ___sys_sendmsg+0xee/0x170 [ 726.103205][ T72] __sys_sendmsg+0xcd/0x170 [ 726.103205][ T72] do_syscall_64+0xc6/0x1e0 [ 726.103205][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.103205][ T72] [ 726.106430][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 726.106955][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 726.106955][ T72] netdev_get_by_index+0x5e/0x80 [ 726.106955][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.106955][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.106955][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.106955][ T72] ipv6_add_addr+0x411/0x2000 [ 726.106955][ T72] inet6_addr_add+0x30e/0xa40 [ 726.106955][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.106955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.106955][ T72] netlink_rcv_skb+0x130/0x360 [ 726.106955][ T72] netlink_unicast+0x449/0x710 [ 726.106955][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.106955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.106955][ T72] ___sys_sendmsg+0xee/0x170 [ 726.106955][ T72] __sys_sendmsg+0xcd/0x170 [ 726.106955][ T72] do_syscall_64+0xc6/0x1e0 [ 726.106955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.106955][ T72] [ 726.110559][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 726.110559][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.110559][ T72] ipv6_find_idev+0x102/0x170 [ 726.110559][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.110559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.110559][ T72] netlink_rcv_skb+0x130/0x360 [ 726.110559][ T72] netlink_unicast+0x449/0x710 [ 726.110559][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.110559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.110559][ T72] ___sys_sendmsg+0xee/0x170 [ 726.110559][ T72] __sys_sendmsg+0xcd/0x170 [ 726.110559][ T72] do_syscall_64+0xc6/0x1e0 [ 726.110559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.110559][ T72] [ 726.113367][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 726.113367][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.113367][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.113367][ T72] ipv6_find_idev+0x102/0x170 [ 726.113367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.113367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.113367][ T72] netlink_rcv_skb+0x130/0x360 [ 726.113367][ T72] netlink_unicast+0x449/0x710 [ 726.113367][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.113367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.113367][ T72] ___sys_sendmsg+0xee/0x170 [ 726.113367][ T72] __sys_sendmsg+0xcd/0x170 [ 726.113367][ T72] do_syscall_64+0xc6/0x1e0 [ 726.113367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.113367][ T72] [ 726.116525][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 726.117067][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 726.117067][ T72] netdev_get_by_index+0x5e/0x80 [ 726.117067][ T72] fib6_nh_init+0x3d8/0x15b0 [ 726.117067][ T72] ip6_route_info_create+0xf18/0x17d0 [ 726.117067][ T72] addrconf_f6i_alloc+0x244/0x410 [ 726.117067][ T72] ipv6_add_addr+0x411/0x2000 [ 726.117067][ T72] inet6_addr_add+0x30e/0xa40 [ 726.117067][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 726.117067][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.117067][ T72] netlink_rcv_skb+0x130/0x360 [ 726.117067][ T72] netlink_unicast+0x449/0x710 [ 726.117067][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.117067][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.117067][ T72] ___sys_sendmsg+0xee/0x170 [ 726.117067][ T72] __sys_sendmsg+0xcd/0x170 [ 726.117067][ T72] do_syscall_64+0xc6/0x1e0 [ 726.117067][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.117067][ T72] [ 726.120664][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 726.120664][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 726.120664][ T72] ipv6_find_idev+0x102/0x170 [ 726.120664][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.120664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.120664][ T72] netlink_rcv_skb+0x130/0x360 [ 726.120664][ T72] netlink_unicast+0x449/0x710 [ 726.120664][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.120664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.120664][ T72] ___sys_sendmsg+0xee/0x170 [ 726.120664][ T72] __sys_sendmsg+0xcd/0x170 [ 726.120664][ T72] do_syscall_64+0xc6/0x1e0 [ 726.120664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.120664][ T72] [ 726.123498][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 726.123498][ T72] neigh_parms_alloc+0x1e5/0x510 [ 726.123498][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 726.123498][ T72] ipv6_find_idev+0x102/0x170 [ 726.123498][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 726.123498][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 726.123498][ T72] netlink_rcv_skb+0x130/0x360 [ 726.123498][ T72] netlink_unicast+0x449/0x710 [ 726.123498][ T72] netlink_sendmsg+0x723/0xbe0 [ 726.123498][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 726.123498][ T72] ___sys_sendmsg+0xee/0x170 [ 726.123498][ T72] __sys_sendmsg+0xcd/0x170 [ 726.123498][ T72] do_syscall_64+0xc6/0x1e0 [ 726.123498][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 726.123498][ T72] [ 736.286871][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 736.287290][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 736.287290][ T72] netdev_get_by_index+0x5e/0x80 [ 736.287290][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.287290][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.287290][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.287290][ T72] ipv6_add_addr+0x411/0x2000 [ 736.287290][ T72] inet6_addr_add+0x30e/0xa40 [ 736.287290][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.287290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.287290][ T72] netlink_rcv_skb+0x130/0x360 [ 736.287290][ T72] netlink_unicast+0x449/0x710 [ 736.287290][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.287290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.287290][ T72] ___sys_sendmsg+0xee/0x170 [ 736.287290][ T72] __sys_sendmsg+0xcd/0x170 [ 736.287290][ T72] do_syscall_64+0xc6/0x1e0 [ 736.287290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.287290][ T72] [ 736.289327][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 736.289327][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.289327][ T72] ipv6_find_idev+0x102/0x170 [ 736.289327][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.289327][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.289327][ T72] netlink_rcv_skb+0x130/0x360 [ 736.289327][ T72] netlink_unicast+0x449/0x710 [ 736.289327][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.289327][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.289327][ T72] ___sys_sendmsg+0xee/0x170 [ 736.289327][ T72] __sys_sendmsg+0xcd/0x170 [ 736.289327][ T72] do_syscall_64+0xc6/0x1e0 [ 736.289327][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.289327][ T72] [ 736.290852][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 736.290852][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.290852][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.290852][ T72] ipv6_find_idev+0x102/0x170 [ 736.290852][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.290852][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.290852][ T72] netlink_rcv_skb+0x130/0x360 [ 736.290852][ T72] netlink_unicast+0x449/0x710 [ 736.290852][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.290852][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.290852][ T72] ___sys_sendmsg+0xee/0x170 [ 736.290852][ T72] __sys_sendmsg+0xcd/0x170 [ 736.290852][ T72] do_syscall_64+0xc6/0x1e0 [ 736.290852][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.290852][ T72] [ 736.292550][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 736.292830][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 736.292830][ T72] netdev_get_by_index+0x5e/0x80 [ 736.292830][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.292830][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.292830][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.292830][ T72] ipv6_add_addr+0x411/0x2000 [ 736.292830][ T72] inet6_addr_add+0x30e/0xa40 [ 736.292830][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.292830][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.292830][ T72] netlink_rcv_skb+0x130/0x360 [ 736.292830][ T72] netlink_unicast+0x449/0x710 [ 736.292830][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.292830][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.292830][ T72] ___sys_sendmsg+0xee/0x170 [ 736.292830][ T72] __sys_sendmsg+0xcd/0x170 [ 736.292830][ T72] do_syscall_64+0xc6/0x1e0 [ 736.292830][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.292830][ T72] [ 736.294819][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 736.294819][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.294819][ T72] ipv6_find_idev+0x102/0x170 [ 736.294819][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.294819][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.294819][ T72] netlink_rcv_skb+0x130/0x360 [ 736.294819][ T72] netlink_unicast+0x449/0x710 [ 736.294819][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.294819][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.294819][ T72] ___sys_sendmsg+0xee/0x170 [ 736.294819][ T72] __sys_sendmsg+0xcd/0x170 [ 736.294819][ T72] do_syscall_64+0xc6/0x1e0 [ 736.294819][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.294819][ T72] [ 736.296362][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 736.296362][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.296362][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.296362][ T72] ipv6_find_idev+0x102/0x170 [ 736.296362][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.296362][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.296362][ T72] netlink_rcv_skb+0x130/0x360 [ 736.296362][ T72] netlink_unicast+0x449/0x710 [ 736.296362][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.296362][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.296362][ T72] ___sys_sendmsg+0xee/0x170 [ 736.296362][ T72] __sys_sendmsg+0xcd/0x170 [ 736.296362][ T72] do_syscall_64+0xc6/0x1e0 [ 736.296362][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.296362][ T72] [ 736.298053][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 736.298326][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 736.298326][ T72] netdev_get_by_index+0x5e/0x80 [ 736.298326][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.298326][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.298326][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.298326][ T72] ipv6_add_addr+0x411/0x2000 [ 736.298326][ T72] inet6_addr_add+0x30e/0xa40 [ 736.298326][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.298326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.298326][ T72] netlink_rcv_skb+0x130/0x360 [ 736.298326][ T72] netlink_unicast+0x449/0x710 [ 736.298326][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.298326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.298326][ T72] ___sys_sendmsg+0xee/0x170 [ 736.298326][ T72] __sys_sendmsg+0xcd/0x170 [ 736.298326][ T72] do_syscall_64+0xc6/0x1e0 [ 736.298326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.298326][ T72] [ 736.300315][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 736.300315][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.300315][ T72] ipv6_find_idev+0x102/0x170 [ 736.300315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.300315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.300315][ T72] netlink_rcv_skb+0x130/0x360 [ 736.300315][ T72] netlink_unicast+0x449/0x710 [ 736.300315][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.300315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.300315][ T72] ___sys_sendmsg+0xee/0x170 [ 736.300315][ T72] __sys_sendmsg+0xcd/0x170 [ 736.300315][ T72] do_syscall_64+0xc6/0x1e0 [ 736.300315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.300315][ T72] [ 736.301834][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 736.301834][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.301834][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.301834][ T72] ipv6_find_idev+0x102/0x170 [ 736.301834][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.301834][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.301834][ T72] netlink_rcv_skb+0x130/0x360 [ 736.301834][ T72] netlink_unicast+0x449/0x710 [ 736.301834][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.301834][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.301834][ T72] ___sys_sendmsg+0xee/0x170 [ 736.301834][ T72] __sys_sendmsg+0xcd/0x170 [ 736.301834][ T72] do_syscall_64+0xc6/0x1e0 [ 736.301834][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.301834][ T72] [ 736.303517][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 736.303793][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 736.303793][ T72] netdev_get_by_index+0x5e/0x80 [ 736.303793][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.303793][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.303793][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.303793][ T72] ipv6_add_addr+0x411/0x2000 [ 736.303793][ T72] inet6_addr_add+0x30e/0xa40 [ 736.303793][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.303793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.303793][ T72] netlink_rcv_skb+0x130/0x360 [ 736.303793][ T72] netlink_unicast+0x449/0x710 [ 736.303793][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.303793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.303793][ T72] ___sys_sendmsg+0xee/0x170 [ 736.303793][ T72] __sys_sendmsg+0xcd/0x170 [ 736.303793][ T72] do_syscall_64+0xc6/0x1e0 [ 736.303793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.303793][ T72] [ 736.305763][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 736.305763][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.305763][ T72] ipv6_find_idev+0x102/0x170 [ 736.305763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.305763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.305763][ T72] netlink_rcv_skb+0x130/0x360 [ 736.305763][ T72] netlink_unicast+0x449/0x710 [ 736.305763][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.305763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.305763][ T72] ___sys_sendmsg+0xee/0x170 [ 736.305763][ T72] __sys_sendmsg+0xcd/0x170 [ 736.305763][ T72] do_syscall_64+0xc6/0x1e0 [ 736.305763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.305763][ T72] [ 736.307286][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 736.307286][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.307286][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.307286][ T72] ipv6_find_idev+0x102/0x170 [ 736.307286][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.307286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.307286][ T72] netlink_rcv_skb+0x130/0x360 [ 736.307286][ T72] netlink_unicast+0x449/0x710 [ 736.307286][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.307286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.307286][ T72] ___sys_sendmsg+0xee/0x170 [ 736.307286][ T72] __sys_sendmsg+0xcd/0x170 [ 736.307286][ T72] do_syscall_64+0xc6/0x1e0 [ 736.307286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.307286][ T72] [ 736.309372][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 736.309640][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 736.309640][ T72] netdev_get_by_index+0x5e/0x80 [ 736.309640][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.309640][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.309640][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.309640][ T72] ipv6_add_addr+0x411/0x2000 [ 736.309640][ T72] inet6_addr_add+0x30e/0xa40 [ 736.309640][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.309640][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.309640][ T72] netlink_rcv_skb+0x130/0x360 [ 736.309640][ T72] netlink_unicast+0x449/0x710 [ 736.309640][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.309640][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.309640][ T72] ___sys_sendmsg+0xee/0x170 [ 736.309640][ T72] __sys_sendmsg+0xcd/0x170 [ 736.309640][ T72] do_syscall_64+0xc6/0x1e0 [ 736.309640][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.309640][ T72] [ 736.311600][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 736.311600][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.311600][ T72] ipv6_find_idev+0x102/0x170 [ 736.311600][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.311600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.311600][ T72] netlink_rcv_skb+0x130/0x360 [ 736.311600][ T72] netlink_unicast+0x449/0x710 [ 736.311600][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.311600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.311600][ T72] ___sys_sendmsg+0xee/0x170 [ 736.311600][ T72] __sys_sendmsg+0xcd/0x170 [ 736.311600][ T72] do_syscall_64+0xc6/0x1e0 [ 736.311600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.311600][ T72] [ 736.313127][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 736.313127][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.313127][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.313127][ T72] ipv6_find_idev+0x102/0x170 [ 736.313127][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.313127][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.313127][ T72] netlink_rcv_skb+0x130/0x360 [ 736.313127][ T72] netlink_unicast+0x449/0x710 [ 736.313127][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.313127][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.313127][ T72] ___sys_sendmsg+0xee/0x170 [ 736.313127][ T72] __sys_sendmsg+0xcd/0x170 [ 736.313127][ T72] do_syscall_64+0xc6/0x1e0 [ 736.313127][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.313127][ T72] [ 736.314831][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 736.315091][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 736.315091][ T72] netdev_get_by_index+0x5e/0x80 [ 736.315091][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.315091][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.315091][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.315091][ T72] ipv6_add_addr+0x411/0x2000 [ 736.315091][ T72] inet6_addr_add+0x30e/0xa40 [ 736.315091][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.315091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.315091][ T72] netlink_rcv_skb+0x130/0x360 [ 736.315091][ T72] netlink_unicast+0x449/0x710 [ 736.315091][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.315091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.315091][ T72] ___sys_sendmsg+0xee/0x170 [ 736.315091][ T72] __sys_sendmsg+0xcd/0x170 [ 736.315091][ T72] do_syscall_64+0xc6/0x1e0 [ 736.315091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.315091][ T72] [ 736.317185][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 736.317185][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.317185][ T72] ipv6_find_idev+0x102/0x170 [ 736.317185][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.317185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.317185][ T72] netlink_rcv_skb+0x130/0x360 [ 736.317185][ T72] netlink_unicast+0x449/0x710 [ 736.317185][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.317185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.317185][ T72] ___sys_sendmsg+0xee/0x170 [ 736.317185][ T72] __sys_sendmsg+0xcd/0x170 [ 736.317185][ T72] do_syscall_64+0xc6/0x1e0 [ 736.317185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.317185][ T72] [ 736.318909][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 736.318909][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.318909][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.318909][ T72] ipv6_find_idev+0x102/0x170 [ 736.318909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.318909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.318909][ T72] netlink_rcv_skb+0x130/0x360 [ 736.318909][ T72] netlink_unicast+0x449/0x710 [ 736.318909][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.318909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.318909][ T72] ___sys_sendmsg+0xee/0x170 [ 736.318909][ T72] __sys_sendmsg+0xcd/0x170 [ 736.318909][ T72] do_syscall_64+0xc6/0x1e0 [ 736.318909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.318909][ T72] [ 736.320879][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 736.321158][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 736.321158][ T72] netdev_get_by_index+0x5e/0x80 [ 736.321158][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.321158][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.321158][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.321158][ T72] ipv6_add_addr+0x411/0x2000 [ 736.321158][ T72] inet6_addr_add+0x30e/0xa40 [ 736.321158][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.321158][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.321158][ T72] netlink_rcv_skb+0x130/0x360 [ 736.321158][ T72] netlink_unicast+0x449/0x710 [ 736.321158][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.321158][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.321158][ T72] ___sys_sendmsg+0xee/0x170 [ 736.321158][ T72] __sys_sendmsg+0xcd/0x170 [ 736.321158][ T72] do_syscall_64+0xc6/0x1e0 [ 736.321158][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.321158][ T72] [ 736.323321][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 736.323321][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.323321][ T72] ipv6_find_idev+0x102/0x170 [ 736.323321][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.323321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.323321][ T72] netlink_rcv_skb+0x130/0x360 [ 736.323321][ T72] netlink_unicast+0x449/0x710 [ 736.323321][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.323321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.323321][ T72] ___sys_sendmsg+0xee/0x170 [ 736.323321][ T72] __sys_sendmsg+0xcd/0x170 [ 736.323321][ T72] do_syscall_64+0xc6/0x1e0 [ 736.323321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.323321][ T72] [ 736.325029][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 736.325029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.325029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.325029][ T72] ipv6_find_idev+0x102/0x170 [ 736.325029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.325029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.325029][ T72] netlink_rcv_skb+0x130/0x360 [ 736.325029][ T72] netlink_unicast+0x449/0x710 [ 736.325029][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.325029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.325029][ T72] ___sys_sendmsg+0xee/0x170 [ 736.325029][ T72] __sys_sendmsg+0xcd/0x170 [ 736.325029][ T72] do_syscall_64+0xc6/0x1e0 [ 736.325029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.325029][ T72] [ 736.326913][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 736.327177][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 736.327177][ T72] netdev_get_by_index+0x5e/0x80 [ 736.327177][ T72] fib6_nh_init+0x3d8/0x15b0 [ 736.327177][ T72] ip6_route_info_create+0xf18/0x17d0 [ 736.327177][ T72] addrconf_f6i_alloc+0x244/0x410 [ 736.327177][ T72] ipv6_add_addr+0x411/0x2000 [ 736.327177][ T72] inet6_addr_add+0x30e/0xa40 [ 736.327177][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 736.327177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.327177][ T72] netlink_rcv_skb+0x130/0x360 [ 736.327177][ T72] netlink_unicast+0x449/0x710 [ 736.327177][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.327177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.327177][ T72] ___sys_sendmsg+0xee/0x170 [ 736.327177][ T72] __sys_sendmsg+0xcd/0x170 [ 736.327177][ T72] do_syscall_64+0xc6/0x1e0 [ 736.327177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.327177][ T72] [ 736.329403][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 736.329403][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 736.329403][ T72] ipv6_find_idev+0x102/0x170 [ 736.329403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.329403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.329403][ T72] netlink_rcv_skb+0x130/0x360 [ 736.329403][ T72] netlink_unicast+0x449/0x710 [ 736.329403][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.329403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.329403][ T72] ___sys_sendmsg+0xee/0x170 [ 736.329403][ T72] __sys_sendmsg+0xcd/0x170 [ 736.329403][ T72] do_syscall_64+0xc6/0x1e0 [ 736.329403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.329403][ T72] [ 736.331168][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 736.331168][ T72] neigh_parms_alloc+0x1e5/0x510 [ 736.331168][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 736.331168][ T72] ipv6_find_idev+0x102/0x170 [ 736.331168][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 736.331168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 736.331168][ T72] netlink_rcv_skb+0x130/0x360 [ 736.331168][ T72] netlink_unicast+0x449/0x710 [ 736.331168][ T72] netlink_sendmsg+0x723/0xbe0 [ 736.331168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 736.331168][ T72] ___sys_sendmsg+0xee/0x170 [ 736.331168][ T72] __sys_sendmsg+0xcd/0x170 [ 736.331168][ T72] do_syscall_64+0xc6/0x1e0 [ 736.331168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 736.331168][ T72] [ 738.598870][ T42] INFO: task modprobe:1060 blocked for more than 491 seconds. [ 738.599257][ T42] Not tainted 6.8.0-virtme #1 [ 738.599393][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 738.599611][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 738.599948][ T42] Call Trace: [ 738.600057][ T42] [ 738.600146][ T42] __schedule+0x705/0x1ac0 [ 738.600297][ T42] ? __pfx___schedule+0x10/0x10 [ 738.600425][ T42] ? schedule+0x1a5/0x210 [ 738.600543][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 738.600681][ T42] ? mark_lock+0x38/0x3e0 [ 738.600795][ T42] ? do_raw_spin_lock+0x131/0x270 [ 738.601003][ T42] ? schedule+0x1a5/0x210 [ 738.601116][ T42] schedule+0xdf/0x210 [ 738.601216][ T42] schedule_preempt_disabled+0x15/0x30 [ 738.601359][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 738.601492][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 738.601667][ T42] ? kasan_save_stack+0x34/0x50 [ 738.601811][ T42] ? kasan_save_stack+0x24/0x50 [ 738.601964][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 738.602125][ T42] ? lock_acquire+0x1c1/0x220 [ 738.602251][ T42] ? register_pernet_subsys+0x1a/0x50 [ 738.602405][ T42] down_write+0x1c9/0x200 [ 738.602510][ T42] ? __pfx_down_write+0x10/0x10 [ 738.602637][ T42] ? __pfx___lock_release+0x10/0x10 [ 738.602786][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 738.603003][ T42] register_pernet_subsys+0x1a/0x50 [ 738.603131][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 738.603318][ T42] do_one_initcall+0xc8/0x3f0 [ 738.603451][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 738.603605][ T42] ? __create_object+0x5e/0xb0 [ 738.603764][ T42] ? kasan_unpoison+0x27/0x60 [ 738.603913][ T42] do_init_module+0x233/0x740 [ 738.604070][ T42] load_module+0x16b5/0x2350 [ 738.604212][ T42] ? __pfx_load_module+0x10/0x10 [ 738.604367][ T42] ? kernel_read_file+0x3d2/0x520 [ 738.604504][ T42] ? kernel_read_file+0x300/0x520 [ 738.604648][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 738.604794][ T42] ? init_module_from_file+0xd2/0x130 [ 738.604939][ T42] init_module_from_file+0xd2/0x130 [ 738.605078][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 738.605255][ T42] ? __lock_release+0x103/0x460 [ 738.605382][ T42] ? idempotent_init_module+0x32a/0x620 [ 738.605532][ T42] ? idempotent_init_module+0x32a/0x620 [ 738.605677][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 738.605830][ T42] idempotent_init_module+0x342/0x620 [ 738.605989][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 738.606169][ T42] __x64_sys_finit_module+0xbe/0x130 [ 738.606303][ T42] do_syscall_64+0xc6/0x1e0 [ 738.606432][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 738.606589][ T42] RIP: 0033:0x7f69f7397e5d [ 738.606758][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 738.606963][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 738.607153][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 738.607339][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 738.607539][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 738.607724][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 738.607960][ T42] [ 738.608062][ T42] [ 738.608062][ T42] Showing all locks held in the system: [ 738.608246][ T42] 1 lock held by khungtaskd/42: [ 738.608372][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 738.608602][ T42] 2 locks held by kworker/u20:1/60: [ 738.608727][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 738.609002][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 738.609292][ T42] 3 locks held by kworker/u16:1/72: [ 738.609416][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 738.609670][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 738.609908][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 738.610132][ T42] 1 lock held by modprobe/1060: [ 738.610255][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 738.610508][ T42] [ 738.610572][ T42] ============================================= [ 738.610572][ T42] [ 746.494885][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 746.495357][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 746.495357][ T72] netdev_get_by_index+0x5e/0x80 [ 746.495357][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.495357][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.495357][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.495357][ T72] ipv6_add_addr+0x411/0x2000 [ 746.495357][ T72] inet6_addr_add+0x30e/0xa40 [ 746.495357][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.495357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.495357][ T72] netlink_rcv_skb+0x130/0x360 [ 746.495357][ T72] netlink_unicast+0x449/0x710 [ 746.495357][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.495357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.495357][ T72] ___sys_sendmsg+0xee/0x170 [ 746.495357][ T72] __sys_sendmsg+0xcd/0x170 [ 746.495357][ T72] do_syscall_64+0xc6/0x1e0 [ 746.495357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.495357][ T72] [ 746.497382][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 746.497382][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.497382][ T72] ipv6_find_idev+0x102/0x170 [ 746.497382][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.497382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.497382][ T72] netlink_rcv_skb+0x130/0x360 [ 746.497382][ T72] netlink_unicast+0x449/0x710 [ 746.497382][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.497382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.497382][ T72] ___sys_sendmsg+0xee/0x170 [ 746.497382][ T72] __sys_sendmsg+0xcd/0x170 [ 746.497382][ T72] do_syscall_64+0xc6/0x1e0 [ 746.497382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.497382][ T72] [ 746.499024][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 746.499024][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.499024][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.499024][ T72] ipv6_find_idev+0x102/0x170 [ 746.499024][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.499024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.499024][ T72] netlink_rcv_skb+0x130/0x360 [ 746.499024][ T72] netlink_unicast+0x449/0x710 [ 746.499024][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.499024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.499024][ T72] ___sys_sendmsg+0xee/0x170 [ 746.499024][ T72] __sys_sendmsg+0xcd/0x170 [ 746.499024][ T72] do_syscall_64+0xc6/0x1e0 [ 746.499024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.499024][ T72] [ 746.500803][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 746.501075][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 746.501075][ T72] netdev_get_by_index+0x5e/0x80 [ 746.501075][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.501075][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.501075][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.501075][ T72] ipv6_add_addr+0x411/0x2000 [ 746.501075][ T72] inet6_addr_add+0x30e/0xa40 [ 746.501075][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.501075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.501075][ T72] netlink_rcv_skb+0x130/0x360 [ 746.501075][ T72] netlink_unicast+0x449/0x710 [ 746.501075][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.501075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.501075][ T72] ___sys_sendmsg+0xee/0x170 [ 746.501075][ T72] __sys_sendmsg+0xcd/0x170 [ 746.501075][ T72] do_syscall_64+0xc6/0x1e0 [ 746.501075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.501075][ T72] [ 746.503124][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 746.503124][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.503124][ T72] ipv6_find_idev+0x102/0x170 [ 746.503124][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.503124][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.503124][ T72] netlink_rcv_skb+0x130/0x360 [ 746.503124][ T72] netlink_unicast+0x449/0x710 [ 746.503124][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.503124][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.503124][ T72] ___sys_sendmsg+0xee/0x170 [ 746.503124][ T72] __sys_sendmsg+0xcd/0x170 [ 746.503124][ T72] do_syscall_64+0xc6/0x1e0 [ 746.503124][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.503124][ T72] [ 746.504718][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 746.504718][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.504718][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.504718][ T72] ipv6_find_idev+0x102/0x170 [ 746.504718][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.504718][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.504718][ T72] netlink_rcv_skb+0x130/0x360 [ 746.504718][ T72] netlink_unicast+0x449/0x710 [ 746.504718][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.504718][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.504718][ T72] ___sys_sendmsg+0xee/0x170 [ 746.504718][ T72] __sys_sendmsg+0xcd/0x170 [ 746.504718][ T72] do_syscall_64+0xc6/0x1e0 [ 746.504718][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.504718][ T72] [ 746.506490][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 746.506808][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 746.506808][ T72] netdev_get_by_index+0x5e/0x80 [ 746.506808][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.506808][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.506808][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.506808][ T72] ipv6_add_addr+0x411/0x2000 [ 746.506808][ T72] inet6_addr_add+0x30e/0xa40 [ 746.506808][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.506808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.506808][ T72] netlink_rcv_skb+0x130/0x360 [ 746.506808][ T72] netlink_unicast+0x449/0x710 [ 746.506808][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.506808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.506808][ T72] ___sys_sendmsg+0xee/0x170 [ 746.506808][ T72] __sys_sendmsg+0xcd/0x170 [ 746.506808][ T72] do_syscall_64+0xc6/0x1e0 [ 746.506808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.506808][ T72] [ 746.508916][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 746.508916][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.508916][ T72] ipv6_find_idev+0x102/0x170 [ 746.508916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.508916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.508916][ T72] netlink_rcv_skb+0x130/0x360 [ 746.508916][ T72] netlink_unicast+0x449/0x710 [ 746.508916][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.508916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.508916][ T72] ___sys_sendmsg+0xee/0x170 [ 746.508916][ T72] __sys_sendmsg+0xcd/0x170 [ 746.508916][ T72] do_syscall_64+0xc6/0x1e0 [ 746.508916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.508916][ T72] [ 746.510537][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 746.510537][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.510537][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.510537][ T72] ipv6_find_idev+0x102/0x170 [ 746.510537][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.510537][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.510537][ T72] netlink_rcv_skb+0x130/0x360 [ 746.510537][ T72] netlink_unicast+0x449/0x710 [ 746.510537][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.510537][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.510537][ T72] ___sys_sendmsg+0xee/0x170 [ 746.510537][ T72] __sys_sendmsg+0xcd/0x170 [ 746.510537][ T72] do_syscall_64+0xc6/0x1e0 [ 746.510537][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.510537][ T72] [ 746.512280][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 746.512551][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 746.512551][ T72] netdev_get_by_index+0x5e/0x80 [ 746.512551][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.512551][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.512551][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.512551][ T72] ipv6_add_addr+0x411/0x2000 [ 746.512551][ T72] inet6_addr_add+0x30e/0xa40 [ 746.512551][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.512551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.512551][ T72] netlink_rcv_skb+0x130/0x360 [ 746.512551][ T72] netlink_unicast+0x449/0x710 [ 746.512551][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.512551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.512551][ T72] ___sys_sendmsg+0xee/0x170 [ 746.512551][ T72] __sys_sendmsg+0xcd/0x170 [ 746.512551][ T72] do_syscall_64+0xc6/0x1e0 [ 746.512551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.512551][ T72] [ 746.514531][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 746.514531][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.514531][ T72] ipv6_find_idev+0x102/0x170 [ 746.514531][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.514531][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.514531][ T72] netlink_rcv_skb+0x130/0x360 [ 746.514531][ T72] netlink_unicast+0x449/0x710 [ 746.514531][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.514531][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.514531][ T72] ___sys_sendmsg+0xee/0x170 [ 746.514531][ T72] __sys_sendmsg+0xcd/0x170 [ 746.514531][ T72] do_syscall_64+0xc6/0x1e0 [ 746.514531][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.514531][ T72] [ 746.516051][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 746.516051][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.516051][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.516051][ T72] ipv6_find_idev+0x102/0x170 [ 746.516051][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.516051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.516051][ T72] netlink_rcv_skb+0x130/0x360 [ 746.516051][ T72] netlink_unicast+0x449/0x710 [ 746.516051][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.516051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.516051][ T72] ___sys_sendmsg+0xee/0x170 [ 746.516051][ T72] __sys_sendmsg+0xcd/0x170 [ 746.516051][ T72] do_syscall_64+0xc6/0x1e0 [ 746.516051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.516051][ T72] [ 746.518238][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 746.518523][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 746.518523][ T72] netdev_get_by_index+0x5e/0x80 [ 746.518523][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.518523][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.518523][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.518523][ T72] ipv6_add_addr+0x411/0x2000 [ 746.518523][ T72] inet6_addr_add+0x30e/0xa40 [ 746.518523][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.518523][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.518523][ T72] netlink_rcv_skb+0x130/0x360 [ 746.518523][ T72] netlink_unicast+0x449/0x710 [ 746.518523][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.518523][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.518523][ T72] ___sys_sendmsg+0xee/0x170 [ 746.518523][ T72] __sys_sendmsg+0xcd/0x170 [ 746.518523][ T72] do_syscall_64+0xc6/0x1e0 [ 746.518523][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.518523][ T72] [ 746.520620][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 746.520620][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.520620][ T72] ipv6_find_idev+0x102/0x170 [ 746.520620][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.520620][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.520620][ T72] netlink_rcv_skb+0x130/0x360 [ 746.520620][ T72] netlink_unicast+0x449/0x710 [ 746.520620][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.520620][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.520620][ T72] ___sys_sendmsg+0xee/0x170 [ 746.520620][ T72] __sys_sendmsg+0xcd/0x170 [ 746.520620][ T72] do_syscall_64+0xc6/0x1e0 [ 746.520620][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.520620][ T72] [ 746.522221][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 746.522221][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.522221][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.522221][ T72] ipv6_find_idev+0x102/0x170 [ 746.522221][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.522221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.522221][ T72] netlink_rcv_skb+0x130/0x360 [ 746.522221][ T72] netlink_unicast+0x449/0x710 [ 746.522221][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.522221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.522221][ T72] ___sys_sendmsg+0xee/0x170 [ 746.522221][ T72] __sys_sendmsg+0xcd/0x170 [ 746.522221][ T72] do_syscall_64+0xc6/0x1e0 [ 746.522221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.522221][ T72] [ 746.524025][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 746.524323][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 746.524323][ T72] netdev_get_by_index+0x5e/0x80 [ 746.524323][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.524323][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.524323][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.524323][ T72] ipv6_add_addr+0x411/0x2000 [ 746.524323][ T72] inet6_addr_add+0x30e/0xa40 [ 746.524323][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.524323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.524323][ T72] netlink_rcv_skb+0x130/0x360 [ 746.524323][ T72] netlink_unicast+0x449/0x710 [ 746.524323][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.524323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.524323][ T72] ___sys_sendmsg+0xee/0x170 [ 746.524323][ T72] __sys_sendmsg+0xcd/0x170 [ 746.524323][ T72] do_syscall_64+0xc6/0x1e0 [ 746.524323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.524323][ T72] [ 746.527133][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 746.527133][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.527133][ T72] ipv6_find_idev+0x102/0x170 [ 746.527133][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.527133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.527133][ T72] netlink_rcv_skb+0x130/0x360 [ 746.527133][ T72] netlink_unicast+0x449/0x710 [ 746.527133][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.527133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.527133][ T72] ___sys_sendmsg+0xee/0x170 [ 746.527133][ T72] __sys_sendmsg+0xcd/0x170 [ 746.527133][ T72] do_syscall_64+0xc6/0x1e0 [ 746.527133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.527133][ T72] [ 746.528950][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 746.528950][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.528950][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.528950][ T72] ipv6_find_idev+0x102/0x170 [ 746.528950][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.528950][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.528950][ T72] netlink_rcv_skb+0x130/0x360 [ 746.528950][ T72] netlink_unicast+0x449/0x710 [ 746.528950][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.528950][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.528950][ T72] ___sys_sendmsg+0xee/0x170 [ 746.528950][ T72] __sys_sendmsg+0xcd/0x170 [ 746.528950][ T72] do_syscall_64+0xc6/0x1e0 [ 746.528950][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.528950][ T72] [ 746.530963][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 746.531241][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 746.531241][ T72] netdev_get_by_index+0x5e/0x80 [ 746.531241][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.531241][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.531241][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.531241][ T72] ipv6_add_addr+0x411/0x2000 [ 746.531241][ T72] inet6_addr_add+0x30e/0xa40 [ 746.531241][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.531241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.531241][ T72] netlink_rcv_skb+0x130/0x360 [ 746.531241][ T72] netlink_unicast+0x449/0x710 [ 746.531241][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.531241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.531241][ T72] ___sys_sendmsg+0xee/0x170 [ 746.531241][ T72] __sys_sendmsg+0xcd/0x170 [ 746.531241][ T72] do_syscall_64+0xc6/0x1e0 [ 746.531241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.531241][ T72] [ 746.533447][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 746.533447][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.533447][ T72] ipv6_find_idev+0x102/0x170 [ 746.533447][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.533447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.533447][ T72] netlink_rcv_skb+0x130/0x360 [ 746.533447][ T72] netlink_unicast+0x449/0x710 [ 746.533447][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.533447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.533447][ T72] ___sys_sendmsg+0xee/0x170 [ 746.533447][ T72] __sys_sendmsg+0xcd/0x170 [ 746.533447][ T72] do_syscall_64+0xc6/0x1e0 [ 746.533447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.533447][ T72] [ 746.535139][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 746.535139][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.535139][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.535139][ T72] ipv6_find_idev+0x102/0x170 [ 746.535139][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.535139][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.535139][ T72] netlink_rcv_skb+0x130/0x360 [ 746.535139][ T72] netlink_unicast+0x449/0x710 [ 746.535139][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.535139][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.535139][ T72] ___sys_sendmsg+0xee/0x170 [ 746.535139][ T72] __sys_sendmsg+0xcd/0x170 [ 746.535139][ T72] do_syscall_64+0xc6/0x1e0 [ 746.535139][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.535139][ T72] [ 746.537107][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 746.537380][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 746.537380][ T72] netdev_get_by_index+0x5e/0x80 [ 746.537380][ T72] fib6_nh_init+0x3d8/0x15b0 [ 746.537380][ T72] ip6_route_info_create+0xf18/0x17d0 [ 746.537380][ T72] addrconf_f6i_alloc+0x244/0x410 [ 746.537380][ T72] ipv6_add_addr+0x411/0x2000 [ 746.537380][ T72] inet6_addr_add+0x30e/0xa40 [ 746.537380][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 746.537380][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.537380][ T72] netlink_rcv_skb+0x130/0x360 [ 746.537380][ T72] netlink_unicast+0x449/0x710 [ 746.537380][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.537380][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.537380][ T72] ___sys_sendmsg+0xee/0x170 [ 746.537380][ T72] __sys_sendmsg+0xcd/0x170 [ 746.537380][ T72] do_syscall_64+0xc6/0x1e0 [ 746.537380][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.537380][ T72] [ 746.539824][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 746.539824][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 746.539824][ T72] ipv6_find_idev+0x102/0x170 [ 746.539824][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.539824][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.539824][ T72] netlink_rcv_skb+0x130/0x360 [ 746.539824][ T72] netlink_unicast+0x449/0x710 [ 746.539824][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.539824][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.539824][ T72] ___sys_sendmsg+0xee/0x170 [ 746.539824][ T72] __sys_sendmsg+0xcd/0x170 [ 746.539824][ T72] do_syscall_64+0xc6/0x1e0 [ 746.539824][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.539824][ T72] [ 746.541632][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 746.541632][ T72] neigh_parms_alloc+0x1e5/0x510 [ 746.541632][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 746.541632][ T72] ipv6_find_idev+0x102/0x170 [ 746.541632][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 746.541632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 746.541632][ T72] netlink_rcv_skb+0x130/0x360 [ 746.541632][ T72] netlink_unicast+0x449/0x710 [ 746.541632][ T72] netlink_sendmsg+0x723/0xbe0 [ 746.541632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 746.541632][ T72] ___sys_sendmsg+0xee/0x170 [ 746.541632][ T72] __sys_sendmsg+0xcd/0x170 [ 746.541632][ T72] do_syscall_64+0xc6/0x1e0 [ 746.541632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 746.541632][ T72] [ 756.798926][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 756.799427][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 756.799427][ T72] netdev_get_by_index+0x5e/0x80 [ 756.799427][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.799427][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.799427][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.799427][ T72] ipv6_add_addr+0x411/0x2000 [ 756.799427][ T72] inet6_addr_add+0x30e/0xa40 [ 756.799427][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.799427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.799427][ T72] netlink_rcv_skb+0x130/0x360 [ 756.799427][ T72] netlink_unicast+0x449/0x710 [ 756.799427][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.799427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.799427][ T72] ___sys_sendmsg+0xee/0x170 [ 756.799427][ T72] __sys_sendmsg+0xcd/0x170 [ 756.799427][ T72] do_syscall_64+0xc6/0x1e0 [ 756.799427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.799427][ T72] [ 756.801427][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 756.801427][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.801427][ T72] ipv6_find_idev+0x102/0x170 [ 756.801427][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.801427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.801427][ T72] netlink_rcv_skb+0x130/0x360 [ 756.801427][ T72] netlink_unicast+0x449/0x710 [ 756.801427][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.801427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.801427][ T72] ___sys_sendmsg+0xee/0x170 [ 756.801427][ T72] __sys_sendmsg+0xcd/0x170 [ 756.801427][ T72] do_syscall_64+0xc6/0x1e0 [ 756.801427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.801427][ T72] [ 756.802952][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 756.802952][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.802952][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.802952][ T72] ipv6_find_idev+0x102/0x170 [ 756.802952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.802952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.802952][ T72] netlink_rcv_skb+0x130/0x360 [ 756.802952][ T72] netlink_unicast+0x449/0x710 [ 756.802952][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.802952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.802952][ T72] ___sys_sendmsg+0xee/0x170 [ 756.802952][ T72] __sys_sendmsg+0xcd/0x170 [ 756.802952][ T72] do_syscall_64+0xc6/0x1e0 [ 756.802952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.802952][ T72] [ 756.804631][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 756.804929][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 756.804929][ T72] netdev_get_by_index+0x5e/0x80 [ 756.804929][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.804929][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.804929][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.804929][ T72] ipv6_add_addr+0x411/0x2000 [ 756.804929][ T72] inet6_addr_add+0x30e/0xa40 [ 756.804929][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.804929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.804929][ T72] netlink_rcv_skb+0x130/0x360 [ 756.804929][ T72] netlink_unicast+0x449/0x710 [ 756.804929][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.804929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.804929][ T72] ___sys_sendmsg+0xee/0x170 [ 756.804929][ T72] __sys_sendmsg+0xcd/0x170 [ 756.804929][ T72] do_syscall_64+0xc6/0x1e0 [ 756.804929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.804929][ T72] [ 756.806975][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 756.806975][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.806975][ T72] ipv6_find_idev+0x102/0x170 [ 756.806975][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.806975][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.806975][ T72] netlink_rcv_skb+0x130/0x360 [ 756.806975][ T72] netlink_unicast+0x449/0x710 [ 756.806975][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.806975][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.806975][ T72] ___sys_sendmsg+0xee/0x170 [ 756.806975][ T72] __sys_sendmsg+0xcd/0x170 [ 756.806975][ T72] do_syscall_64+0xc6/0x1e0 [ 756.806975][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.806975][ T72] [ 756.808501][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 756.808501][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.808501][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.808501][ T72] ipv6_find_idev+0x102/0x170 [ 756.808501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.808501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.808501][ T72] netlink_rcv_skb+0x130/0x360 [ 756.808501][ T72] netlink_unicast+0x449/0x710 [ 756.808501][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.808501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.808501][ T72] ___sys_sendmsg+0xee/0x170 [ 756.808501][ T72] __sys_sendmsg+0xcd/0x170 [ 756.808501][ T72] do_syscall_64+0xc6/0x1e0 [ 756.808501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.808501][ T72] [ 756.810158][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 756.810422][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 756.810422][ T72] netdev_get_by_index+0x5e/0x80 [ 756.810422][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.810422][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.810422][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.810422][ T72] ipv6_add_addr+0x411/0x2000 [ 756.810422][ T72] inet6_addr_add+0x30e/0xa40 [ 756.810422][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.810422][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.810422][ T72] netlink_rcv_skb+0x130/0x360 [ 756.810422][ T72] netlink_unicast+0x449/0x710 [ 756.810422][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.810422][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.810422][ T72] ___sys_sendmsg+0xee/0x170 [ 756.810422][ T72] __sys_sendmsg+0xcd/0x170 [ 756.810422][ T72] do_syscall_64+0xc6/0x1e0 [ 756.810422][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.810422][ T72] [ 756.812386][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 756.812386][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.812386][ T72] ipv6_find_idev+0x102/0x170 [ 756.812386][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.812386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.812386][ T72] netlink_rcv_skb+0x130/0x360 [ 756.812386][ T72] netlink_unicast+0x449/0x710 [ 756.812386][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.812386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.812386][ T72] ___sys_sendmsg+0xee/0x170 [ 756.812386][ T72] __sys_sendmsg+0xcd/0x170 [ 756.812386][ T72] do_syscall_64+0xc6/0x1e0 [ 756.812386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.812386][ T72] [ 756.813896][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 756.813896][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.813896][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.813896][ T72] ipv6_find_idev+0x102/0x170 [ 756.813896][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.813896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.813896][ T72] netlink_rcv_skb+0x130/0x360 [ 756.813896][ T72] netlink_unicast+0x449/0x710 [ 756.813896][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.813896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.813896][ T72] ___sys_sendmsg+0xee/0x170 [ 756.813896][ T72] __sys_sendmsg+0xcd/0x170 [ 756.813896][ T72] do_syscall_64+0xc6/0x1e0 [ 756.813896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.813896][ T72] [ 756.815552][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 756.816633][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 756.816633][ T72] netdev_get_by_index+0x5e/0x80 [ 756.816633][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.816633][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.816633][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.816633][ T72] ipv6_add_addr+0x411/0x2000 [ 756.816633][ T72] inet6_addr_add+0x30e/0xa40 [ 756.816633][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.816633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.816633][ T72] netlink_rcv_skb+0x130/0x360 [ 756.816633][ T72] netlink_unicast+0x449/0x710 [ 756.816633][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.816633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.816633][ T72] ___sys_sendmsg+0xee/0x170 [ 756.816633][ T72] __sys_sendmsg+0xcd/0x170 [ 756.816633][ T72] do_syscall_64+0xc6/0x1e0 [ 756.816633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.816633][ T72] [ 756.818597][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 756.818597][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.818597][ T72] ipv6_find_idev+0x102/0x170 [ 756.818597][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.818597][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.818597][ T72] netlink_rcv_skb+0x130/0x360 [ 756.818597][ T72] netlink_unicast+0x449/0x710 [ 756.818597][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.818597][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.818597][ T72] ___sys_sendmsg+0xee/0x170 [ 756.818597][ T72] __sys_sendmsg+0xcd/0x170 [ 756.818597][ T72] do_syscall_64+0xc6/0x1e0 [ 756.818597][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.818597][ T72] [ 756.820115][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 756.820115][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.820115][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.820115][ T72] ipv6_find_idev+0x102/0x170 [ 756.820115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.820115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.820115][ T72] netlink_rcv_skb+0x130/0x360 [ 756.820115][ T72] netlink_unicast+0x449/0x710 [ 756.820115][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.820115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.820115][ T72] ___sys_sendmsg+0xee/0x170 [ 756.820115][ T72] __sys_sendmsg+0xcd/0x170 [ 756.820115][ T72] do_syscall_64+0xc6/0x1e0 [ 756.820115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.820115][ T72] [ 756.821819][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 756.822076][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 756.822076][ T72] netdev_get_by_index+0x5e/0x80 [ 756.822076][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.822076][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.822076][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.822076][ T72] ipv6_add_addr+0x411/0x2000 [ 756.822076][ T72] inet6_addr_add+0x30e/0xa40 [ 756.822076][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.822076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.822076][ T72] netlink_rcv_skb+0x130/0x360 [ 756.822076][ T72] netlink_unicast+0x449/0x710 [ 756.822076][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.822076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.822076][ T72] ___sys_sendmsg+0xee/0x170 [ 756.822076][ T72] __sys_sendmsg+0xcd/0x170 [ 756.822076][ T72] do_syscall_64+0xc6/0x1e0 [ 756.822076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.822076][ T72] [ 756.824051][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 756.824051][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.824051][ T72] ipv6_find_idev+0x102/0x170 [ 756.824051][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.824051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.824051][ T72] netlink_rcv_skb+0x130/0x360 [ 756.824051][ T72] netlink_unicast+0x449/0x710 [ 756.824051][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.824051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.824051][ T72] ___sys_sendmsg+0xee/0x170 [ 756.824051][ T72] __sys_sendmsg+0xcd/0x170 [ 756.824051][ T72] do_syscall_64+0xc6/0x1e0 [ 756.824051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.824051][ T72] [ 756.825569][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 756.825569][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.825569][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.825569][ T72] ipv6_find_idev+0x102/0x170 [ 756.825569][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.825569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.825569][ T72] netlink_rcv_skb+0x130/0x360 [ 756.825569][ T72] netlink_unicast+0x449/0x710 [ 756.825569][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.825569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.825569][ T72] ___sys_sendmsg+0xee/0x170 [ 756.825569][ T72] __sys_sendmsg+0xcd/0x170 [ 756.825569][ T72] do_syscall_64+0xc6/0x1e0 [ 756.825569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.825569][ T72] [ 756.827272][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 756.827536][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 756.827536][ T72] netdev_get_by_index+0x5e/0x80 [ 756.827536][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.827536][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.827536][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.827536][ T72] ipv6_add_addr+0x411/0x2000 [ 756.827536][ T72] inet6_addr_add+0x30e/0xa40 [ 756.827536][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.827536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.827536][ T72] netlink_rcv_skb+0x130/0x360 [ 756.827536][ T72] netlink_unicast+0x449/0x710 [ 756.827536][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.827536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.827536][ T72] ___sys_sendmsg+0xee/0x170 [ 756.827536][ T72] __sys_sendmsg+0xcd/0x170 [ 756.827536][ T72] do_syscall_64+0xc6/0x1e0 [ 756.827536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.827536][ T72] [ 756.829622][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 756.829622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.829622][ T72] ipv6_find_idev+0x102/0x170 [ 756.829622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.829622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.829622][ T72] netlink_rcv_skb+0x130/0x360 [ 756.829622][ T72] netlink_unicast+0x449/0x710 [ 756.829622][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.829622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.829622][ T72] ___sys_sendmsg+0xee/0x170 [ 756.829622][ T72] __sys_sendmsg+0xcd/0x170 [ 756.829622][ T72] do_syscall_64+0xc6/0x1e0 [ 756.829622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.829622][ T72] [ 756.831382][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 756.831382][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.831382][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.831382][ T72] ipv6_find_idev+0x102/0x170 [ 756.831382][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.831382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.831382][ T72] netlink_rcv_skb+0x130/0x360 [ 756.831382][ T72] netlink_unicast+0x449/0x710 [ 756.831382][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.831382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.831382][ T72] ___sys_sendmsg+0xee/0x170 [ 756.831382][ T72] __sys_sendmsg+0xcd/0x170 [ 756.831382][ T72] do_syscall_64+0xc6/0x1e0 [ 756.831382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.831382][ T72] [ 756.833259][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 756.833525][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 756.833525][ T72] netdev_get_by_index+0x5e/0x80 [ 756.833525][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.833525][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.833525][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.833525][ T72] ipv6_add_addr+0x411/0x2000 [ 756.833525][ T72] inet6_addr_add+0x30e/0xa40 [ 756.833525][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.833525][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.833525][ T72] netlink_rcv_skb+0x130/0x360 [ 756.833525][ T72] netlink_unicast+0x449/0x710 [ 756.833525][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.833525][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.833525][ T72] ___sys_sendmsg+0xee/0x170 [ 756.833525][ T72] __sys_sendmsg+0xcd/0x170 [ 756.833525][ T72] do_syscall_64+0xc6/0x1e0 [ 756.833525][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.833525][ T72] [ 756.835734][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 756.835734][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.835734][ T72] ipv6_find_idev+0x102/0x170 [ 756.835734][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.835734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.835734][ T72] netlink_rcv_skb+0x130/0x360 [ 756.835734][ T72] netlink_unicast+0x449/0x710 [ 756.835734][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.835734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.835734][ T72] ___sys_sendmsg+0xee/0x170 [ 756.835734][ T72] __sys_sendmsg+0xcd/0x170 [ 756.835734][ T72] do_syscall_64+0xc6/0x1e0 [ 756.835734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.835734][ T72] [ 756.837437][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 756.837437][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.837437][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.837437][ T72] ipv6_find_idev+0x102/0x170 [ 756.837437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.837437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.837437][ T72] netlink_rcv_skb+0x130/0x360 [ 756.837437][ T72] netlink_unicast+0x449/0x710 [ 756.837437][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.837437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.837437][ T72] ___sys_sendmsg+0xee/0x170 [ 756.837437][ T72] __sys_sendmsg+0xcd/0x170 [ 756.837437][ T72] do_syscall_64+0xc6/0x1e0 [ 756.837437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.837437][ T72] [ 756.839308][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 756.839574][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 756.839574][ T72] netdev_get_by_index+0x5e/0x80 [ 756.839574][ T72] fib6_nh_init+0x3d8/0x15b0 [ 756.839574][ T72] ip6_route_info_create+0xf18/0x17d0 [ 756.839574][ T72] addrconf_f6i_alloc+0x244/0x410 [ 756.839574][ T72] ipv6_add_addr+0x411/0x2000 [ 756.839574][ T72] inet6_addr_add+0x30e/0xa40 [ 756.839574][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 756.839574][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.839574][ T72] netlink_rcv_skb+0x130/0x360 [ 756.839574][ T72] netlink_unicast+0x449/0x710 [ 756.839574][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.839574][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.839574][ T72] ___sys_sendmsg+0xee/0x170 [ 756.839574][ T72] __sys_sendmsg+0xcd/0x170 [ 756.839574][ T72] do_syscall_64+0xc6/0x1e0 [ 756.839574][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.839574][ T72] [ 756.841854][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 756.841854][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 756.841854][ T72] ipv6_find_idev+0x102/0x170 [ 756.841854][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.841854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.841854][ T72] netlink_rcv_skb+0x130/0x360 [ 756.841854][ T72] netlink_unicast+0x449/0x710 [ 756.841854][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.841854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.841854][ T72] ___sys_sendmsg+0xee/0x170 [ 756.841854][ T72] __sys_sendmsg+0xcd/0x170 [ 756.841854][ T72] do_syscall_64+0xc6/0x1e0 [ 756.841854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.841854][ T72] [ 756.843551][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 756.843551][ T72] neigh_parms_alloc+0x1e5/0x510 [ 756.843551][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 756.843551][ T72] ipv6_find_idev+0x102/0x170 [ 756.843551][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 756.843551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 756.843551][ T72] netlink_rcv_skb+0x130/0x360 [ 756.843551][ T72] netlink_unicast+0x449/0x710 [ 756.843551][ T72] netlink_sendmsg+0x723/0xbe0 [ 756.843551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 756.843551][ T72] ___sys_sendmsg+0xee/0x170 [ 756.843551][ T72] __sys_sendmsg+0xcd/0x170 [ 756.843551][ T72] do_syscall_64+0xc6/0x1e0 [ 756.843551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 756.843551][ T72] [ 767.094890][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 767.095373][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 767.095373][ T72] netdev_get_by_index+0x5e/0x80 [ 767.095373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.095373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.095373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.095373][ T72] ipv6_add_addr+0x411/0x2000 [ 767.095373][ T72] inet6_addr_add+0x30e/0xa40 [ 767.095373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.095373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.095373][ T72] netlink_rcv_skb+0x130/0x360 [ 767.095373][ T72] netlink_unicast+0x449/0x710 [ 767.095373][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.095373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.095373][ T72] ___sys_sendmsg+0xee/0x170 [ 767.095373][ T72] __sys_sendmsg+0xcd/0x170 [ 767.095373][ T72] do_syscall_64+0xc6/0x1e0 [ 767.095373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.095373][ T72] [ 767.097378][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 767.097378][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.097378][ T72] ipv6_find_idev+0x102/0x170 [ 767.097378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.097378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.097378][ T72] netlink_rcv_skb+0x130/0x360 [ 767.097378][ T72] netlink_unicast+0x449/0x710 [ 767.097378][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.097378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.097378][ T72] ___sys_sendmsg+0xee/0x170 [ 767.097378][ T72] __sys_sendmsg+0xcd/0x170 [ 767.097378][ T72] do_syscall_64+0xc6/0x1e0 [ 767.097378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.097378][ T72] [ 767.098923][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 767.098923][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.098923][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.098923][ T72] ipv6_find_idev+0x102/0x170 [ 767.098923][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.098923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.098923][ T72] netlink_rcv_skb+0x130/0x360 [ 767.098923][ T72] netlink_unicast+0x449/0x710 [ 767.098923][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.098923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.098923][ T72] ___sys_sendmsg+0xee/0x170 [ 767.098923][ T72] __sys_sendmsg+0xcd/0x170 [ 767.098923][ T72] do_syscall_64+0xc6/0x1e0 [ 767.098923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.098923][ T72] [ 767.100726][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 767.101009][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 767.101009][ T72] netdev_get_by_index+0x5e/0x80 [ 767.101009][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.101009][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.101009][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.101009][ T72] ipv6_add_addr+0x411/0x2000 [ 767.101009][ T72] inet6_addr_add+0x30e/0xa40 [ 767.101009][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.101009][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.101009][ T72] netlink_rcv_skb+0x130/0x360 [ 767.101009][ T72] netlink_unicast+0x449/0x710 [ 767.101009][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.101009][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.101009][ T72] ___sys_sendmsg+0xee/0x170 [ 767.101009][ T72] __sys_sendmsg+0xcd/0x170 [ 767.101009][ T72] do_syscall_64+0xc6/0x1e0 [ 767.101009][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.101009][ T72] [ 767.102996][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 767.102996][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.102996][ T72] ipv6_find_idev+0x102/0x170 [ 767.102996][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.102996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.102996][ T72] netlink_rcv_skb+0x130/0x360 [ 767.102996][ T72] netlink_unicast+0x449/0x710 [ 767.102996][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.102996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.102996][ T72] ___sys_sendmsg+0xee/0x170 [ 767.102996][ T72] __sys_sendmsg+0xcd/0x170 [ 767.102996][ T72] do_syscall_64+0xc6/0x1e0 [ 767.102996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.102996][ T72] [ 767.104510][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 767.104510][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.104510][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.104510][ T72] ipv6_find_idev+0x102/0x170 [ 767.104510][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.104510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.104510][ T72] netlink_rcv_skb+0x130/0x360 [ 767.104510][ T72] netlink_unicast+0x449/0x710 [ 767.104510][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.104510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.104510][ T72] ___sys_sendmsg+0xee/0x170 [ 767.104510][ T72] __sys_sendmsg+0xcd/0x170 [ 767.104510][ T72] do_syscall_64+0xc6/0x1e0 [ 767.104510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.104510][ T72] [ 767.106162][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 767.106433][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 767.106433][ T72] netdev_get_by_index+0x5e/0x80 [ 767.106433][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.106433][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.106433][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.106433][ T72] ipv6_add_addr+0x411/0x2000 [ 767.106433][ T72] inet6_addr_add+0x30e/0xa40 [ 767.106433][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.106433][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.106433][ T72] netlink_rcv_skb+0x130/0x360 [ 767.106433][ T72] netlink_unicast+0x449/0x710 [ 767.106433][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.106433][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.106433][ T72] ___sys_sendmsg+0xee/0x170 [ 767.106433][ T72] __sys_sendmsg+0xcd/0x170 [ 767.106433][ T72] do_syscall_64+0xc6/0x1e0 [ 767.106433][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.106433][ T72] [ 767.108416][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 767.108416][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.108416][ T72] ipv6_find_idev+0x102/0x170 [ 767.108416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.108416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.108416][ T72] netlink_rcv_skb+0x130/0x360 [ 767.108416][ T72] netlink_unicast+0x449/0x710 [ 767.108416][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.108416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.108416][ T72] ___sys_sendmsg+0xee/0x170 [ 767.108416][ T72] __sys_sendmsg+0xcd/0x170 [ 767.108416][ T72] do_syscall_64+0xc6/0x1e0 [ 767.108416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.108416][ T72] [ 767.109935][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 767.109935][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.109935][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.109935][ T72] ipv6_find_idev+0x102/0x170 [ 767.109935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.109935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.109935][ T72] netlink_rcv_skb+0x130/0x360 [ 767.109935][ T72] netlink_unicast+0x449/0x710 [ 767.109935][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.109935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.109935][ T72] ___sys_sendmsg+0xee/0x170 [ 767.109935][ T72] __sys_sendmsg+0xcd/0x170 [ 767.109935][ T72] do_syscall_64+0xc6/0x1e0 [ 767.109935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.109935][ T72] [ 767.111641][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 767.111986][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 767.111986][ T72] netdev_get_by_index+0x5e/0x80 [ 767.111986][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.111986][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.111986][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.111986][ T72] ipv6_add_addr+0x411/0x2000 [ 767.111986][ T72] inet6_addr_add+0x30e/0xa40 [ 767.111986][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.111986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.111986][ T72] netlink_rcv_skb+0x130/0x360 [ 767.111986][ T72] netlink_unicast+0x449/0x710 [ 767.111986][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.111986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.111986][ T72] ___sys_sendmsg+0xee/0x170 [ 767.111986][ T72] __sys_sendmsg+0xcd/0x170 [ 767.111986][ T72] do_syscall_64+0xc6/0x1e0 [ 767.111986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.111986][ T72] [ 767.113947][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 767.113947][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.113947][ T72] ipv6_find_idev+0x102/0x170 [ 767.113947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.113947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.113947][ T72] netlink_rcv_skb+0x130/0x360 [ 767.113947][ T72] netlink_unicast+0x449/0x710 [ 767.113947][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.113947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.113947][ T72] ___sys_sendmsg+0xee/0x170 [ 767.113947][ T72] __sys_sendmsg+0xcd/0x170 [ 767.113947][ T72] do_syscall_64+0xc6/0x1e0 [ 767.113947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.113947][ T72] [ 767.115458][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 767.115458][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.115458][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.115458][ T72] ipv6_find_idev+0x102/0x170 [ 767.115458][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.115458][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.115458][ T72] netlink_rcv_skb+0x130/0x360 [ 767.115458][ T72] netlink_unicast+0x449/0x710 [ 767.115458][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.115458][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.115458][ T72] ___sys_sendmsg+0xee/0x170 [ 767.115458][ T72] __sys_sendmsg+0xcd/0x170 [ 767.115458][ T72] do_syscall_64+0xc6/0x1e0 [ 767.115458][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.115458][ T72] [ 767.117796][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 767.118061][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 767.118061][ T72] netdev_get_by_index+0x5e/0x80 [ 767.118061][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.118061][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.118061][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.118061][ T72] ipv6_add_addr+0x411/0x2000 [ 767.118061][ T72] inet6_addr_add+0x30e/0xa40 [ 767.118061][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.118061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.118061][ T72] netlink_rcv_skb+0x130/0x360 [ 767.118061][ T72] netlink_unicast+0x449/0x710 [ 767.118061][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.118061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.118061][ T72] ___sys_sendmsg+0xee/0x170 [ 767.118061][ T72] __sys_sendmsg+0xcd/0x170 [ 767.118061][ T72] do_syscall_64+0xc6/0x1e0 [ 767.118061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.118061][ T72] [ 767.120033][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 767.120033][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.120033][ T72] ipv6_find_idev+0x102/0x170 [ 767.120033][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.120033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.120033][ T72] netlink_rcv_skb+0x130/0x360 [ 767.120033][ T72] netlink_unicast+0x449/0x710 [ 767.120033][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.120033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.120033][ T72] ___sys_sendmsg+0xee/0x170 [ 767.120033][ T72] __sys_sendmsg+0xcd/0x170 [ 767.120033][ T72] do_syscall_64+0xc6/0x1e0 [ 767.120033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.120033][ T72] [ 767.121549][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 767.121549][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.121549][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.121549][ T72] ipv6_find_idev+0x102/0x170 [ 767.121549][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.121549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.121549][ T72] netlink_rcv_skb+0x130/0x360 [ 767.121549][ T72] netlink_unicast+0x449/0x710 [ 767.121549][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.121549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.121549][ T72] ___sys_sendmsg+0xee/0x170 [ 767.121549][ T72] __sys_sendmsg+0xcd/0x170 [ 767.121549][ T72] do_syscall_64+0xc6/0x1e0 [ 767.121549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.121549][ T72] [ 767.123425][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 767.123683][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 767.123683][ T72] netdev_get_by_index+0x5e/0x80 [ 767.123683][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.123683][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.123683][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.123683][ T72] ipv6_add_addr+0x411/0x2000 [ 767.123683][ T72] inet6_addr_add+0x30e/0xa40 [ 767.123683][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.123683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.123683][ T72] netlink_rcv_skb+0x130/0x360 [ 767.123683][ T72] netlink_unicast+0x449/0x710 [ 767.123683][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.123683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.123683][ T72] ___sys_sendmsg+0xee/0x170 [ 767.123683][ T72] __sys_sendmsg+0xcd/0x170 [ 767.123683][ T72] do_syscall_64+0xc6/0x1e0 [ 767.123683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.123683][ T72] [ 767.125948][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 767.125948][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.125948][ T72] ipv6_find_idev+0x102/0x170 [ 767.125948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.125948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.125948][ T72] netlink_rcv_skb+0x130/0x360 [ 767.125948][ T72] netlink_unicast+0x449/0x710 [ 767.125948][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.125948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.125948][ T72] ___sys_sendmsg+0xee/0x170 [ 767.125948][ T72] __sys_sendmsg+0xcd/0x170 [ 767.125948][ T72] do_syscall_64+0xc6/0x1e0 [ 767.125948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.125948][ T72] [ 767.127647][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 767.127647][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.127647][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.127647][ T72] ipv6_find_idev+0x102/0x170 [ 767.127647][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.127647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.127647][ T72] netlink_rcv_skb+0x130/0x360 [ 767.127647][ T72] netlink_unicast+0x449/0x710 [ 767.127647][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.127647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.127647][ T72] ___sys_sendmsg+0xee/0x170 [ 767.127647][ T72] __sys_sendmsg+0xcd/0x170 [ 767.127647][ T72] do_syscall_64+0xc6/0x1e0 [ 767.127647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.127647][ T72] [ 767.129518][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 767.129778][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 767.129778][ T72] netdev_get_by_index+0x5e/0x80 [ 767.129778][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.129778][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.129778][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.129778][ T72] ipv6_add_addr+0x411/0x2000 [ 767.129778][ T72] inet6_addr_add+0x30e/0xa40 [ 767.129778][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.129778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.129778][ T72] netlink_rcv_skb+0x130/0x360 [ 767.129778][ T72] netlink_unicast+0x449/0x710 [ 767.129778][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.129778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.129778][ T72] ___sys_sendmsg+0xee/0x170 [ 767.129778][ T72] __sys_sendmsg+0xcd/0x170 [ 767.129778][ T72] do_syscall_64+0xc6/0x1e0 [ 767.129778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.129778][ T72] [ 767.131920][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 767.131920][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.131920][ T72] ipv6_find_idev+0x102/0x170 [ 767.131920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.131920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.131920][ T72] netlink_rcv_skb+0x130/0x360 [ 767.131920][ T72] netlink_unicast+0x449/0x710 [ 767.131920][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.131920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.131920][ T72] ___sys_sendmsg+0xee/0x170 [ 767.131920][ T72] __sys_sendmsg+0xcd/0x170 [ 767.131920][ T72] do_syscall_64+0xc6/0x1e0 [ 767.131920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.131920][ T72] [ 767.133674][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 767.133674][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.133674][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.133674][ T72] ipv6_find_idev+0x102/0x170 [ 767.133674][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.133674][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.133674][ T72] netlink_rcv_skb+0x130/0x360 [ 767.133674][ T72] netlink_unicast+0x449/0x710 [ 767.133674][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.133674][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.133674][ T72] ___sys_sendmsg+0xee/0x170 [ 767.133674][ T72] __sys_sendmsg+0xcd/0x170 [ 767.133674][ T72] do_syscall_64+0xc6/0x1e0 [ 767.133674][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.133674][ T72] [ 767.135548][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 767.135860][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 767.135860][ T72] netdev_get_by_index+0x5e/0x80 [ 767.135860][ T72] fib6_nh_init+0x3d8/0x15b0 [ 767.135860][ T72] ip6_route_info_create+0xf18/0x17d0 [ 767.135860][ T72] addrconf_f6i_alloc+0x244/0x410 [ 767.135860][ T72] ipv6_add_addr+0x411/0x2000 [ 767.135860][ T72] inet6_addr_add+0x30e/0xa40 [ 767.135860][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 767.135860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.135860][ T72] netlink_rcv_skb+0x130/0x360 [ 767.135860][ T72] netlink_unicast+0x449/0x710 [ 767.135860][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.135860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.135860][ T72] ___sys_sendmsg+0xee/0x170 [ 767.135860][ T72] __sys_sendmsg+0xcd/0x170 [ 767.135860][ T72] do_syscall_64+0xc6/0x1e0 [ 767.135860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.135860][ T72] [ 767.138412][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 767.138412][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 767.138412][ T72] ipv6_find_idev+0x102/0x170 [ 767.138412][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.138412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.138412][ T72] netlink_rcv_skb+0x130/0x360 [ 767.138412][ T72] netlink_unicast+0x449/0x710 [ 767.138412][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.138412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.138412][ T72] ___sys_sendmsg+0xee/0x170 [ 767.138412][ T72] __sys_sendmsg+0xcd/0x170 [ 767.138412][ T72] do_syscall_64+0xc6/0x1e0 [ 767.138412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.138412][ T72] [ 767.140103][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 767.140103][ T72] neigh_parms_alloc+0x1e5/0x510 [ 767.140103][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 767.140103][ T72] ipv6_find_idev+0x102/0x170 [ 767.140103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 767.140103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 767.140103][ T72] netlink_rcv_skb+0x130/0x360 [ 767.140103][ T72] netlink_unicast+0x449/0x710 [ 767.140103][ T72] netlink_sendmsg+0x723/0xbe0 [ 767.140103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 767.140103][ T72] ___sys_sendmsg+0xee/0x170 [ 767.140103][ T72] __sys_sendmsg+0xcd/0x170 [ 767.140103][ T72] do_syscall_64+0xc6/0x1e0 [ 767.140103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 767.140103][ T72] [ 777.158792][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 777.159278][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 777.159278][ T72] netdev_get_by_index+0x5e/0x80 [ 777.159278][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.159278][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.159278][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.159278][ T72] ipv6_add_addr+0x411/0x2000 [ 777.159278][ T72] inet6_addr_add+0x30e/0xa40 [ 777.159278][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.159278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.159278][ T72] netlink_rcv_skb+0x130/0x360 [ 777.159278][ T72] netlink_unicast+0x449/0x710 [ 777.159278][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.159278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.159278][ T72] ___sys_sendmsg+0xee/0x170 [ 777.159278][ T72] __sys_sendmsg+0xcd/0x170 [ 777.159278][ T72] do_syscall_64+0xc6/0x1e0 [ 777.159278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.159278][ T72] [ 777.161302][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 777.161302][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.161302][ T72] ipv6_find_idev+0x102/0x170 [ 777.161302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.161302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.161302][ T72] netlink_rcv_skb+0x130/0x360 [ 777.161302][ T72] netlink_unicast+0x449/0x710 [ 777.161302][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.161302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.161302][ T72] ___sys_sendmsg+0xee/0x170 [ 777.161302][ T72] __sys_sendmsg+0xcd/0x170 [ 777.161302][ T72] do_syscall_64+0xc6/0x1e0 [ 777.161302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.161302][ T72] [ 777.162825][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 777.162825][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.162825][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.162825][ T72] ipv6_find_idev+0x102/0x170 [ 777.162825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.162825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.162825][ T72] netlink_rcv_skb+0x130/0x360 [ 777.162825][ T72] netlink_unicast+0x449/0x710 [ 777.162825][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.162825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.162825][ T72] ___sys_sendmsg+0xee/0x170 [ 777.162825][ T72] __sys_sendmsg+0xcd/0x170 [ 777.162825][ T72] do_syscall_64+0xc6/0x1e0 [ 777.162825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.162825][ T72] [ 777.164509][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 777.164794][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 777.164794][ T72] netdev_get_by_index+0x5e/0x80 [ 777.164794][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.164794][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.164794][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.164794][ T72] ipv6_add_addr+0x411/0x2000 [ 777.164794][ T72] inet6_addr_add+0x30e/0xa40 [ 777.164794][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.164794][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.164794][ T72] netlink_rcv_skb+0x130/0x360 [ 777.164794][ T72] netlink_unicast+0x449/0x710 [ 777.164794][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.164794][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.164794][ T72] ___sys_sendmsg+0xee/0x170 [ 777.164794][ T72] __sys_sendmsg+0xcd/0x170 [ 777.164794][ T72] do_syscall_64+0xc6/0x1e0 [ 777.164794][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.164794][ T72] [ 777.166780][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 777.166780][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.166780][ T72] ipv6_find_idev+0x102/0x170 [ 777.166780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.166780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.166780][ T72] netlink_rcv_skb+0x130/0x360 [ 777.166780][ T72] netlink_unicast+0x449/0x710 [ 777.166780][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.166780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.166780][ T72] ___sys_sendmsg+0xee/0x170 [ 777.166780][ T72] __sys_sendmsg+0xcd/0x170 [ 777.166780][ T72] do_syscall_64+0xc6/0x1e0 [ 777.166780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.166780][ T72] [ 777.168310][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 777.168310][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.168310][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.168310][ T72] ipv6_find_idev+0x102/0x170 [ 777.168310][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.168310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.168310][ T72] netlink_rcv_skb+0x130/0x360 [ 777.168310][ T72] netlink_unicast+0x449/0x710 [ 777.168310][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.168310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.168310][ T72] ___sys_sendmsg+0xee/0x170 [ 777.168310][ T72] __sys_sendmsg+0xcd/0x170 [ 777.168310][ T72] do_syscall_64+0xc6/0x1e0 [ 777.168310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.168310][ T72] [ 777.169968][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 777.170231][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 777.170231][ T72] netdev_get_by_index+0x5e/0x80 [ 777.170231][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.170231][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.170231][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.170231][ T72] ipv6_add_addr+0x411/0x2000 [ 777.170231][ T72] inet6_addr_add+0x30e/0xa40 [ 777.170231][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.170231][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.170231][ T72] netlink_rcv_skb+0x130/0x360 [ 777.170231][ T72] netlink_unicast+0x449/0x710 [ 777.170231][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.170231][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.170231][ T72] ___sys_sendmsg+0xee/0x170 [ 777.170231][ T72] __sys_sendmsg+0xcd/0x170 [ 777.170231][ T72] do_syscall_64+0xc6/0x1e0 [ 777.170231][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.170231][ T72] [ 777.172189][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 777.172189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.172189][ T72] ipv6_find_idev+0x102/0x170 [ 777.172189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.172189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.172189][ T72] netlink_rcv_skb+0x130/0x360 [ 777.172189][ T72] netlink_unicast+0x449/0x710 [ 777.172189][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.172189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.172189][ T72] ___sys_sendmsg+0xee/0x170 [ 777.172189][ T72] __sys_sendmsg+0xcd/0x170 [ 777.172189][ T72] do_syscall_64+0xc6/0x1e0 [ 777.172189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.172189][ T72] [ 777.173707][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 777.173707][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.173707][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.173707][ T72] ipv6_find_idev+0x102/0x170 [ 777.173707][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.173707][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.173707][ T72] netlink_rcv_skb+0x130/0x360 [ 777.173707][ T72] netlink_unicast+0x449/0x710 [ 777.173707][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.173707][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.173707][ T72] ___sys_sendmsg+0xee/0x170 [ 777.173707][ T72] __sys_sendmsg+0xcd/0x170 [ 777.173707][ T72] do_syscall_64+0xc6/0x1e0 [ 777.173707][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.173707][ T72] [ 777.175374][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 777.175645][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 777.175645][ T72] netdev_get_by_index+0x5e/0x80 [ 777.175645][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.175645][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.175645][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.175645][ T72] ipv6_add_addr+0x411/0x2000 [ 777.175645][ T72] inet6_addr_add+0x30e/0xa40 [ 777.175645][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.175645][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.175645][ T72] netlink_rcv_skb+0x130/0x360 [ 777.175645][ T72] netlink_unicast+0x449/0x710 [ 777.175645][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.175645][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.175645][ T72] ___sys_sendmsg+0xee/0x170 [ 777.175645][ T72] __sys_sendmsg+0xcd/0x170 [ 777.175645][ T72] do_syscall_64+0xc6/0x1e0 [ 777.175645][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.175645][ T72] [ 777.177622][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 777.177622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.177622][ T72] ipv6_find_idev+0x102/0x170 [ 777.177622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.177622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.177622][ T72] netlink_rcv_skb+0x130/0x360 [ 777.177622][ T72] netlink_unicast+0x449/0x710 [ 777.177622][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.177622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.177622][ T72] ___sys_sendmsg+0xee/0x170 [ 777.177622][ T72] __sys_sendmsg+0xcd/0x170 [ 777.177622][ T72] do_syscall_64+0xc6/0x1e0 [ 777.177622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.177622][ T72] [ 777.179149][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 777.179149][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.179149][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.179149][ T72] ipv6_find_idev+0x102/0x170 [ 777.179149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.179149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.179149][ T72] netlink_rcv_skb+0x130/0x360 [ 777.179149][ T72] netlink_unicast+0x449/0x710 [ 777.179149][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.179149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.179149][ T72] ___sys_sendmsg+0xee/0x170 [ 777.179149][ T72] __sys_sendmsg+0xcd/0x170 [ 777.179149][ T72] do_syscall_64+0xc6/0x1e0 [ 777.179149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.179149][ T72] [ 777.180828][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 777.181099][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 777.181099][ T72] netdev_get_by_index+0x5e/0x80 [ 777.181099][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.181099][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.181099][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.181099][ T72] ipv6_add_addr+0x411/0x2000 [ 777.181099][ T72] inet6_addr_add+0x30e/0xa40 [ 777.181099][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.181099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.181099][ T72] netlink_rcv_skb+0x130/0x360 [ 777.181099][ T72] netlink_unicast+0x449/0x710 [ 777.181099][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.181099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.181099][ T72] ___sys_sendmsg+0xee/0x170 [ 777.181099][ T72] __sys_sendmsg+0xcd/0x170 [ 777.181099][ T72] do_syscall_64+0xc6/0x1e0 [ 777.181099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.181099][ T72] [ 777.183078][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 777.183078][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.183078][ T72] ipv6_find_idev+0x102/0x170 [ 777.183078][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.183078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.183078][ T72] netlink_rcv_skb+0x130/0x360 [ 777.183078][ T72] netlink_unicast+0x449/0x710 [ 777.183078][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.183078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.183078][ T72] ___sys_sendmsg+0xee/0x170 [ 777.183078][ T72] __sys_sendmsg+0xcd/0x170 [ 777.183078][ T72] do_syscall_64+0xc6/0x1e0 [ 777.183078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.183078][ T72] [ 777.184606][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 777.184606][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.184606][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.184606][ T72] ipv6_find_idev+0x102/0x170 [ 777.184606][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.184606][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.184606][ T72] netlink_rcv_skb+0x130/0x360 [ 777.184606][ T72] netlink_unicast+0x449/0x710 [ 777.184606][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.184606][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.184606][ T72] ___sys_sendmsg+0xee/0x170 [ 777.184606][ T72] __sys_sendmsg+0xcd/0x170 [ 777.184606][ T72] do_syscall_64+0xc6/0x1e0 [ 777.184606][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.184606][ T72] [ 777.186574][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 777.186897][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 777.186897][ T72] netdev_get_by_index+0x5e/0x80 [ 777.186897][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.186897][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.186897][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.186897][ T72] ipv6_add_addr+0x411/0x2000 [ 777.186897][ T72] inet6_addr_add+0x30e/0xa40 [ 777.186897][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.186897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.186897][ T72] netlink_rcv_skb+0x130/0x360 [ 777.186897][ T72] netlink_unicast+0x449/0x710 [ 777.186897][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.186897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.186897][ T72] ___sys_sendmsg+0xee/0x170 [ 777.186897][ T72] __sys_sendmsg+0xcd/0x170 [ 777.186897][ T72] do_syscall_64+0xc6/0x1e0 [ 777.186897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.186897][ T72] [ 777.189050][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 777.189050][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.189050][ T72] ipv6_find_idev+0x102/0x170 [ 777.189050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.189050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.189050][ T72] netlink_rcv_skb+0x130/0x360 [ 777.189050][ T72] netlink_unicast+0x449/0x710 [ 777.189050][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.189050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.189050][ T72] ___sys_sendmsg+0xee/0x170 [ 777.189050][ T72] __sys_sendmsg+0xcd/0x170 [ 777.189050][ T72] do_syscall_64+0xc6/0x1e0 [ 777.189050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.189050][ T72] [ 777.190739][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 777.190739][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.190739][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.190739][ T72] ipv6_find_idev+0x102/0x170 [ 777.190739][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.190739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.190739][ T72] netlink_rcv_skb+0x130/0x360 [ 777.190739][ T72] netlink_unicast+0x449/0x710 [ 777.190739][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.190739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.190739][ T72] ___sys_sendmsg+0xee/0x170 [ 777.190739][ T72] __sys_sendmsg+0xcd/0x170 [ 777.190739][ T72] do_syscall_64+0xc6/0x1e0 [ 777.190739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.190739][ T72] [ 777.192622][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 777.192937][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 777.192937][ T72] netdev_get_by_index+0x5e/0x80 [ 777.192937][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.192937][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.192937][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.192937][ T72] ipv6_add_addr+0x411/0x2000 [ 777.192937][ T72] inet6_addr_add+0x30e/0xa40 [ 777.192937][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.192937][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.192937][ T72] netlink_rcv_skb+0x130/0x360 [ 777.192937][ T72] netlink_unicast+0x449/0x710 [ 777.192937][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.192937][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.192937][ T72] ___sys_sendmsg+0xee/0x170 [ 777.192937][ T72] __sys_sendmsg+0xcd/0x170 [ 777.192937][ T72] do_syscall_64+0xc6/0x1e0 [ 777.192937][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.192937][ T72] [ 777.195122][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 777.195122][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.195122][ T72] ipv6_find_idev+0x102/0x170 [ 777.195122][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.195122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.195122][ T72] netlink_rcv_skb+0x130/0x360 [ 777.195122][ T72] netlink_unicast+0x449/0x710 [ 777.195122][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.195122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.195122][ T72] ___sys_sendmsg+0xee/0x170 [ 777.195122][ T72] __sys_sendmsg+0xcd/0x170 [ 777.195122][ T72] do_syscall_64+0xc6/0x1e0 [ 777.195122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.195122][ T72] [ 777.196891][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 777.196891][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.196891][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.196891][ T72] ipv6_find_idev+0x102/0x170 [ 777.196891][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.196891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.196891][ T72] netlink_rcv_skb+0x130/0x360 [ 777.196891][ T72] netlink_unicast+0x449/0x710 [ 777.196891][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.196891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.196891][ T72] ___sys_sendmsg+0xee/0x170 [ 777.196891][ T72] __sys_sendmsg+0xcd/0x170 [ 777.196891][ T72] do_syscall_64+0xc6/0x1e0 [ 777.196891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.196891][ T72] [ 777.198897][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 777.199170][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 777.199170][ T72] netdev_get_by_index+0x5e/0x80 [ 777.199170][ T72] fib6_nh_init+0x3d8/0x15b0 [ 777.199170][ T72] ip6_route_info_create+0xf18/0x17d0 [ 777.199170][ T72] addrconf_f6i_alloc+0x244/0x410 [ 777.199170][ T72] ipv6_add_addr+0x411/0x2000 [ 777.199170][ T72] inet6_addr_add+0x30e/0xa40 [ 777.199170][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 777.199170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.199170][ T72] netlink_rcv_skb+0x130/0x360 [ 777.199170][ T72] netlink_unicast+0x449/0x710 [ 777.199170][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.199170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.199170][ T72] ___sys_sendmsg+0xee/0x170 [ 777.199170][ T72] __sys_sendmsg+0xcd/0x170 [ 777.199170][ T72] do_syscall_64+0xc6/0x1e0 [ 777.199170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.199170][ T72] [ 777.201328][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 777.201328][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 777.201328][ T72] ipv6_find_idev+0x102/0x170 [ 777.201328][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.201328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.201328][ T72] netlink_rcv_skb+0x130/0x360 [ 777.201328][ T72] netlink_unicast+0x449/0x710 [ 777.201328][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.201328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.201328][ T72] ___sys_sendmsg+0xee/0x170 [ 777.201328][ T72] __sys_sendmsg+0xcd/0x170 [ 777.201328][ T72] do_syscall_64+0xc6/0x1e0 [ 777.201328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.201328][ T72] [ 777.203017][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 777.203017][ T72] neigh_parms_alloc+0x1e5/0x510 [ 777.203017][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 777.203017][ T72] ipv6_find_idev+0x102/0x170 [ 777.203017][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 777.203017][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 777.203017][ T72] netlink_rcv_skb+0x130/0x360 [ 777.203017][ T72] netlink_unicast+0x449/0x710 [ 777.203017][ T72] netlink_sendmsg+0x723/0xbe0 [ 777.203017][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 777.203017][ T72] ___sys_sendmsg+0xee/0x170 [ 777.203017][ T72] __sys_sendmsg+0xcd/0x170 [ 777.203017][ T72] do_syscall_64+0xc6/0x1e0 [ 777.203017][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 777.203017][ T72] [ 787.446845][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 787.447520][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 787.447520][ T72] netdev_get_by_index+0x5e/0x80 [ 787.447520][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.447520][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.447520][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.447520][ T72] ipv6_add_addr+0x411/0x2000 [ 787.447520][ T72] inet6_addr_add+0x30e/0xa40 [ 787.447520][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.447520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.447520][ T72] netlink_rcv_skb+0x130/0x360 [ 787.447520][ T72] netlink_unicast+0x449/0x710 [ 787.447520][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.447520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.447520][ T72] ___sys_sendmsg+0xee/0x170 [ 787.447520][ T72] __sys_sendmsg+0xcd/0x170 [ 787.447520][ T72] do_syscall_64+0xc6/0x1e0 [ 787.447520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.447520][ T72] [ 787.449878][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 787.449878][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.449878][ T72] ipv6_find_idev+0x102/0x170 [ 787.449878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.449878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.449878][ T72] netlink_rcv_skb+0x130/0x360 [ 787.449878][ T72] netlink_unicast+0x449/0x710 [ 787.449878][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.449878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.449878][ T72] ___sys_sendmsg+0xee/0x170 [ 787.449878][ T72] __sys_sendmsg+0xcd/0x170 [ 787.449878][ T72] do_syscall_64+0xc6/0x1e0 [ 787.449878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.449878][ T72] [ 787.451448][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 787.451448][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.451448][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.451448][ T72] ipv6_find_idev+0x102/0x170 [ 787.451448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.451448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.451448][ T72] netlink_rcv_skb+0x130/0x360 [ 787.451448][ T72] netlink_unicast+0x449/0x710 [ 787.451448][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.451448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.451448][ T72] ___sys_sendmsg+0xee/0x170 [ 787.451448][ T72] __sys_sendmsg+0xcd/0x170 [ 787.451448][ T72] do_syscall_64+0xc6/0x1e0 [ 787.451448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.451448][ T72] [ 787.453180][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 787.453459][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 787.453459][ T72] netdev_get_by_index+0x5e/0x80 [ 787.453459][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.453459][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.453459][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.453459][ T72] ipv6_add_addr+0x411/0x2000 [ 787.453459][ T72] inet6_addr_add+0x30e/0xa40 [ 787.453459][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.453459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.453459][ T72] netlink_rcv_skb+0x130/0x360 [ 787.453459][ T72] netlink_unicast+0x449/0x710 [ 787.453459][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.453459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.453459][ T72] ___sys_sendmsg+0xee/0x170 [ 787.453459][ T72] __sys_sendmsg+0xcd/0x170 [ 787.453459][ T72] do_syscall_64+0xc6/0x1e0 [ 787.453459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.453459][ T72] [ 787.455594][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 787.455594][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.455594][ T72] ipv6_find_idev+0x102/0x170 [ 787.455594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.455594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.455594][ T72] netlink_rcv_skb+0x130/0x360 [ 787.455594][ T72] netlink_unicast+0x449/0x710 [ 787.455594][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.455594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.455594][ T72] ___sys_sendmsg+0xee/0x170 [ 787.455594][ T72] __sys_sendmsg+0xcd/0x170 [ 787.455594][ T72] do_syscall_64+0xc6/0x1e0 [ 787.455594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.455594][ T72] [ 787.457149][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 787.457149][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.457149][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.457149][ T72] ipv6_find_idev+0x102/0x170 [ 787.457149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.457149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.457149][ T72] netlink_rcv_skb+0x130/0x360 [ 787.457149][ T72] netlink_unicast+0x449/0x710 [ 787.457149][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.457149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.457149][ T72] ___sys_sendmsg+0xee/0x170 [ 787.457149][ T72] __sys_sendmsg+0xcd/0x170 [ 787.457149][ T72] do_syscall_64+0xc6/0x1e0 [ 787.457149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.457149][ T72] [ 787.458876][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 787.459157][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 787.459157][ T72] netdev_get_by_index+0x5e/0x80 [ 787.459157][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.459157][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.459157][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.459157][ T72] ipv6_add_addr+0x411/0x2000 [ 787.459157][ T72] inet6_addr_add+0x30e/0xa40 [ 787.459157][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.459157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.459157][ T72] netlink_rcv_skb+0x130/0x360 [ 787.459157][ T72] netlink_unicast+0x449/0x710 [ 787.459157][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.459157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.459157][ T72] ___sys_sendmsg+0xee/0x170 [ 787.459157][ T72] __sys_sendmsg+0xcd/0x170 [ 787.459157][ T72] do_syscall_64+0xc6/0x1e0 [ 787.459157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.459157][ T72] [ 787.461170][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 787.461170][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.461170][ T72] ipv6_find_idev+0x102/0x170 [ 787.461170][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.461170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.461170][ T72] netlink_rcv_skb+0x130/0x360 [ 787.461170][ T72] netlink_unicast+0x449/0x710 [ 787.461170][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.461170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.461170][ T72] ___sys_sendmsg+0xee/0x170 [ 787.461170][ T72] __sys_sendmsg+0xcd/0x170 [ 787.461170][ T72] do_syscall_64+0xc6/0x1e0 [ 787.461170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.461170][ T72] [ 787.462727][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 787.462727][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.462727][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.462727][ T72] ipv6_find_idev+0x102/0x170 [ 787.462727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.462727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.462727][ T72] netlink_rcv_skb+0x130/0x360 [ 787.462727][ T72] netlink_unicast+0x449/0x710 [ 787.462727][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.462727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.462727][ T72] ___sys_sendmsg+0xee/0x170 [ 787.462727][ T72] __sys_sendmsg+0xcd/0x170 [ 787.462727][ T72] do_syscall_64+0xc6/0x1e0 [ 787.462727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.462727][ T72] [ 787.464507][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 787.464787][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 787.464787][ T72] netdev_get_by_index+0x5e/0x80 [ 787.464787][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.464787][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.464787][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.464787][ T72] ipv6_add_addr+0x411/0x2000 [ 787.464787][ T72] inet6_addr_add+0x30e/0xa40 [ 787.464787][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.464787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.464787][ T72] netlink_rcv_skb+0x130/0x360 [ 787.464787][ T72] netlink_unicast+0x449/0x710 [ 787.464787][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.464787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.464787][ T72] ___sys_sendmsg+0xee/0x170 [ 787.464787][ T72] __sys_sendmsg+0xcd/0x170 [ 787.464787][ T72] do_syscall_64+0xc6/0x1e0 [ 787.464787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.464787][ T72] [ 787.466800][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 787.466800][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.466800][ T72] ipv6_find_idev+0x102/0x170 [ 787.466800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.466800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.466800][ T72] netlink_rcv_skb+0x130/0x360 [ 787.466800][ T72] netlink_unicast+0x449/0x710 [ 787.466800][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.466800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.466800][ T72] ___sys_sendmsg+0xee/0x170 [ 787.466800][ T72] __sys_sendmsg+0xcd/0x170 [ 787.466800][ T72] do_syscall_64+0xc6/0x1e0 [ 787.466800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.466800][ T72] [ 787.468375][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 787.468375][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.468375][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.468375][ T72] ipv6_find_idev+0x102/0x170 [ 787.468375][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.468375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.468375][ T72] netlink_rcv_skb+0x130/0x360 [ 787.468375][ T72] netlink_unicast+0x449/0x710 [ 787.468375][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.468375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.468375][ T72] ___sys_sendmsg+0xee/0x170 [ 787.468375][ T72] __sys_sendmsg+0xcd/0x170 [ 787.468375][ T72] do_syscall_64+0xc6/0x1e0 [ 787.468375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.468375][ T72] [ 787.470497][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 787.471295][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 787.471295][ T72] netdev_get_by_index+0x5e/0x80 [ 787.471295][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.471295][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.471295][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.471295][ T72] ipv6_add_addr+0x411/0x2000 [ 787.471295][ T72] inet6_addr_add+0x30e/0xa40 [ 787.471295][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.471295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.471295][ T72] netlink_rcv_skb+0x130/0x360 [ 787.471295][ T72] netlink_unicast+0x449/0x710 [ 787.471295][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.471295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.471295][ T72] ___sys_sendmsg+0xee/0x170 [ 787.471295][ T72] __sys_sendmsg+0xcd/0x170 [ 787.471295][ T72] do_syscall_64+0xc6/0x1e0 [ 787.471295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.471295][ T72] [ 787.473345][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 787.473345][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.473345][ T72] ipv6_find_idev+0x102/0x170 [ 787.473345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.473345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.473345][ T72] netlink_rcv_skb+0x130/0x360 [ 787.473345][ T72] netlink_unicast+0x449/0x710 [ 787.473345][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.473345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.473345][ T72] ___sys_sendmsg+0xee/0x170 [ 787.473345][ T72] __sys_sendmsg+0xcd/0x170 [ 787.473345][ T72] do_syscall_64+0xc6/0x1e0 [ 787.473345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.473345][ T72] [ 787.474961][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 787.474961][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.474961][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.474961][ T72] ipv6_find_idev+0x102/0x170 [ 787.474961][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.474961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.474961][ T72] netlink_rcv_skb+0x130/0x360 [ 787.474961][ T72] netlink_unicast+0x449/0x710 [ 787.474961][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.474961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.474961][ T72] ___sys_sendmsg+0xee/0x170 [ 787.474961][ T72] __sys_sendmsg+0xcd/0x170 [ 787.474961][ T72] do_syscall_64+0xc6/0x1e0 [ 787.474961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.474961][ T72] [ 787.476856][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 787.477142][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 787.477142][ T72] netdev_get_by_index+0x5e/0x80 [ 787.477142][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.477142][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.477142][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.477142][ T72] ipv6_add_addr+0x411/0x2000 [ 787.477142][ T72] inet6_addr_add+0x30e/0xa40 [ 787.477142][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.477142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.477142][ T72] netlink_rcv_skb+0x130/0x360 [ 787.477142][ T72] netlink_unicast+0x449/0x710 [ 787.477142][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.477142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.477142][ T72] ___sys_sendmsg+0xee/0x170 [ 787.477142][ T72] __sys_sendmsg+0xcd/0x170 [ 787.477142][ T72] do_syscall_64+0xc6/0x1e0 [ 787.477142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.477142][ T72] [ 787.479368][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 787.479368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.479368][ T72] ipv6_find_idev+0x102/0x170 [ 787.479368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.479368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.479368][ T72] netlink_rcv_skb+0x130/0x360 [ 787.479368][ T72] netlink_unicast+0x449/0x710 [ 787.479368][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.479368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.479368][ T72] ___sys_sendmsg+0xee/0x170 [ 787.479368][ T72] __sys_sendmsg+0xcd/0x170 [ 787.479368][ T72] do_syscall_64+0xc6/0x1e0 [ 787.479368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.479368][ T72] [ 787.481155][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 787.481155][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.481155][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.481155][ T72] ipv6_find_idev+0x102/0x170 [ 787.481155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.481155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.481155][ T72] netlink_rcv_skb+0x130/0x360 [ 787.481155][ T72] netlink_unicast+0x449/0x710 [ 787.481155][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.481155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.481155][ T72] ___sys_sendmsg+0xee/0x170 [ 787.481155][ T72] __sys_sendmsg+0xcd/0x170 [ 787.481155][ T72] do_syscall_64+0xc6/0x1e0 [ 787.481155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.481155][ T72] [ 787.483390][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 787.483714][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 787.483714][ T72] netdev_get_by_index+0x5e/0x80 [ 787.483714][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.483714][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.483714][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.483714][ T72] ipv6_add_addr+0x411/0x2000 [ 787.483714][ T72] inet6_addr_add+0x30e/0xa40 [ 787.483714][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.483714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.483714][ T72] netlink_rcv_skb+0x130/0x360 [ 787.483714][ T72] netlink_unicast+0x449/0x710 [ 787.483714][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.483714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.483714][ T72] ___sys_sendmsg+0xee/0x170 [ 787.483714][ T72] __sys_sendmsg+0xcd/0x170 [ 787.483714][ T72] do_syscall_64+0xc6/0x1e0 [ 787.483714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.483714][ T72] [ 787.486134][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 787.486134][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.486134][ T72] ipv6_find_idev+0x102/0x170 [ 787.486134][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.486134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.486134][ T72] netlink_rcv_skb+0x130/0x360 [ 787.486134][ T72] netlink_unicast+0x449/0x710 [ 787.486134][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.486134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.486134][ T72] ___sys_sendmsg+0xee/0x170 [ 787.486134][ T72] __sys_sendmsg+0xcd/0x170 [ 787.486134][ T72] do_syscall_64+0xc6/0x1e0 [ 787.486134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.486134][ T72] [ 787.488018][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 787.488018][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.488018][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.488018][ T72] ipv6_find_idev+0x102/0x170 [ 787.488018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.488018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.488018][ T72] netlink_rcv_skb+0x130/0x360 [ 787.488018][ T72] netlink_unicast+0x449/0x710 [ 787.488018][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.488018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.488018][ T72] ___sys_sendmsg+0xee/0x170 [ 787.488018][ T72] __sys_sendmsg+0xcd/0x170 [ 787.488018][ T72] do_syscall_64+0xc6/0x1e0 [ 787.488018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.488018][ T72] [ 787.490174][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 787.490514][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 787.490514][ T72] netdev_get_by_index+0x5e/0x80 [ 787.490514][ T72] fib6_nh_init+0x3d8/0x15b0 [ 787.490514][ T72] ip6_route_info_create+0xf18/0x17d0 [ 787.490514][ T72] addrconf_f6i_alloc+0x244/0x410 [ 787.490514][ T72] ipv6_add_addr+0x411/0x2000 [ 787.490514][ T72] inet6_addr_add+0x30e/0xa40 [ 787.490514][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 787.490514][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.490514][ T72] netlink_rcv_skb+0x130/0x360 [ 787.490514][ T72] netlink_unicast+0x449/0x710 [ 787.490514][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.490514][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.490514][ T72] ___sys_sendmsg+0xee/0x170 [ 787.490514][ T72] __sys_sendmsg+0xcd/0x170 [ 787.490514][ T72] do_syscall_64+0xc6/0x1e0 [ 787.490514][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.490514][ T72] [ 787.492910][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 787.492910][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 787.492910][ T72] ipv6_find_idev+0x102/0x170 [ 787.492910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.492910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.492910][ T72] netlink_rcv_skb+0x130/0x360 [ 787.492910][ T72] netlink_unicast+0x449/0x710 [ 787.492910][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.492910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.492910][ T72] ___sys_sendmsg+0xee/0x170 [ 787.492910][ T72] __sys_sendmsg+0xcd/0x170 [ 787.492910][ T72] do_syscall_64+0xc6/0x1e0 [ 787.492910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.492910][ T72] [ 787.495513][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 787.495513][ T72] neigh_parms_alloc+0x1e5/0x510 [ 787.495513][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 787.495513][ T72] ipv6_find_idev+0x102/0x170 [ 787.495513][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 787.495513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 787.495513][ T72] netlink_rcv_skb+0x130/0x360 [ 787.495513][ T72] netlink_unicast+0x449/0x710 [ 787.495513][ T72] netlink_sendmsg+0x723/0xbe0 [ 787.495513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 787.495513][ T72] ___sys_sendmsg+0xee/0x170 [ 787.495513][ T72] __sys_sendmsg+0xcd/0x170 [ 787.495513][ T72] do_syscall_64+0xc6/0x1e0 [ 787.495513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 787.495513][ T72] [ 797.734868][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 797.735290][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 797.735290][ T72] netdev_get_by_index+0x5e/0x80 [ 797.735290][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.735290][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.735290][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.735290][ T72] ipv6_add_addr+0x411/0x2000 [ 797.735290][ T72] inet6_addr_add+0x30e/0xa40 [ 797.735290][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.735290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.735290][ T72] netlink_rcv_skb+0x130/0x360 [ 797.735290][ T72] netlink_unicast+0x449/0x710 [ 797.735290][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.735290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.735290][ T72] ___sys_sendmsg+0xee/0x170 [ 797.735290][ T72] __sys_sendmsg+0xcd/0x170 [ 797.735290][ T72] do_syscall_64+0xc6/0x1e0 [ 797.735290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.735290][ T72] [ 797.737329][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 797.737329][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.737329][ T72] ipv6_find_idev+0x102/0x170 [ 797.737329][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.737329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.737329][ T72] netlink_rcv_skb+0x130/0x360 [ 797.737329][ T72] netlink_unicast+0x449/0x710 [ 797.737329][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.737329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.737329][ T72] ___sys_sendmsg+0xee/0x170 [ 797.737329][ T72] __sys_sendmsg+0xcd/0x170 [ 797.737329][ T72] do_syscall_64+0xc6/0x1e0 [ 797.737329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.737329][ T72] [ 797.738905][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 797.738905][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.738905][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.738905][ T72] ipv6_find_idev+0x102/0x170 [ 797.738905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.738905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.738905][ T72] netlink_rcv_skb+0x130/0x360 [ 797.738905][ T72] netlink_unicast+0x449/0x710 [ 797.738905][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.738905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.738905][ T72] ___sys_sendmsg+0xee/0x170 [ 797.738905][ T72] __sys_sendmsg+0xcd/0x170 [ 797.738905][ T72] do_syscall_64+0xc6/0x1e0 [ 797.738905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.738905][ T72] [ 797.740696][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 797.740981][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 797.740981][ T72] netdev_get_by_index+0x5e/0x80 [ 797.740981][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.740981][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.740981][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.740981][ T72] ipv6_add_addr+0x411/0x2000 [ 797.740981][ T72] inet6_addr_add+0x30e/0xa40 [ 797.740981][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.740981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.740981][ T72] netlink_rcv_skb+0x130/0x360 [ 797.740981][ T72] netlink_unicast+0x449/0x710 [ 797.740981][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.740981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.740981][ T72] ___sys_sendmsg+0xee/0x170 [ 797.740981][ T72] __sys_sendmsg+0xcd/0x170 [ 797.740981][ T72] do_syscall_64+0xc6/0x1e0 [ 797.740981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.740981][ T72] [ 797.742986][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 797.742986][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.742986][ T72] ipv6_find_idev+0x102/0x170 [ 797.742986][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.742986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.742986][ T72] netlink_rcv_skb+0x130/0x360 [ 797.742986][ T72] netlink_unicast+0x449/0x710 [ 797.742986][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.742986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.742986][ T72] ___sys_sendmsg+0xee/0x170 [ 797.742986][ T72] __sys_sendmsg+0xcd/0x170 [ 797.742986][ T72] do_syscall_64+0xc6/0x1e0 [ 797.742986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.742986][ T72] [ 797.744514][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 797.744514][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.744514][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.744514][ T72] ipv6_find_idev+0x102/0x170 [ 797.744514][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.744514][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.744514][ T72] netlink_rcv_skb+0x130/0x360 [ 797.744514][ T72] netlink_unicast+0x449/0x710 [ 797.744514][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.744514][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.744514][ T72] ___sys_sendmsg+0xee/0x170 [ 797.744514][ T72] __sys_sendmsg+0xcd/0x170 [ 797.744514][ T72] do_syscall_64+0xc6/0x1e0 [ 797.744514][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.744514][ T72] [ 797.746180][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 797.746448][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 797.746448][ T72] netdev_get_by_index+0x5e/0x80 [ 797.746448][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.746448][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.746448][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.746448][ T72] ipv6_add_addr+0x411/0x2000 [ 797.746448][ T72] inet6_addr_add+0x30e/0xa40 [ 797.746448][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.746448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.746448][ T72] netlink_rcv_skb+0x130/0x360 [ 797.746448][ T72] netlink_unicast+0x449/0x710 [ 797.746448][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.746448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.746448][ T72] ___sys_sendmsg+0xee/0x170 [ 797.746448][ T72] __sys_sendmsg+0xcd/0x170 [ 797.746448][ T72] do_syscall_64+0xc6/0x1e0 [ 797.746448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.746448][ T72] [ 797.748433][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 797.748433][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.748433][ T72] ipv6_find_idev+0x102/0x170 [ 797.748433][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.748433][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.748433][ T72] netlink_rcv_skb+0x130/0x360 [ 797.748433][ T72] netlink_unicast+0x449/0x710 [ 797.748433][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.748433][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.748433][ T72] ___sys_sendmsg+0xee/0x170 [ 797.748433][ T72] __sys_sendmsg+0xcd/0x170 [ 797.748433][ T72] do_syscall_64+0xc6/0x1e0 [ 797.748433][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.748433][ T72] [ 797.750038][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 797.750038][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.750038][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.750038][ T72] ipv6_find_idev+0x102/0x170 [ 797.750038][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.750038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.750038][ T72] netlink_rcv_skb+0x130/0x360 [ 797.750038][ T72] netlink_unicast+0x449/0x710 [ 797.750038][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.750038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.750038][ T72] ___sys_sendmsg+0xee/0x170 [ 797.750038][ T72] __sys_sendmsg+0xcd/0x170 [ 797.750038][ T72] do_syscall_64+0xc6/0x1e0 [ 797.750038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.750038][ T72] [ 797.751756][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 797.752031][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 797.752031][ T72] netdev_get_by_index+0x5e/0x80 [ 797.752031][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.752031][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.752031][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.752031][ T72] ipv6_add_addr+0x411/0x2000 [ 797.752031][ T72] inet6_addr_add+0x30e/0xa40 [ 797.752031][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.752031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.752031][ T72] netlink_rcv_skb+0x130/0x360 [ 797.752031][ T72] netlink_unicast+0x449/0x710 [ 797.752031][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.752031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.752031][ T72] ___sys_sendmsg+0xee/0x170 [ 797.752031][ T72] __sys_sendmsg+0xcd/0x170 [ 797.752031][ T72] do_syscall_64+0xc6/0x1e0 [ 797.752031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.752031][ T72] [ 797.754034][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 797.754034][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.754034][ T72] ipv6_find_idev+0x102/0x170 [ 797.754034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.754034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.754034][ T72] netlink_rcv_skb+0x130/0x360 [ 797.754034][ T72] netlink_unicast+0x449/0x710 [ 797.754034][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.754034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.754034][ T72] ___sys_sendmsg+0xee/0x170 [ 797.754034][ T72] __sys_sendmsg+0xcd/0x170 [ 797.754034][ T72] do_syscall_64+0xc6/0x1e0 [ 797.754034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.754034][ T72] [ 797.755568][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 797.755568][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.755568][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.755568][ T72] ipv6_find_idev+0x102/0x170 [ 797.755568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.755568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.755568][ T72] netlink_rcv_skb+0x130/0x360 [ 797.755568][ T72] netlink_unicast+0x449/0x710 [ 797.755568][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.755568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.755568][ T72] ___sys_sendmsg+0xee/0x170 [ 797.755568][ T72] __sys_sendmsg+0xcd/0x170 [ 797.755568][ T72] do_syscall_64+0xc6/0x1e0 [ 797.755568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.755568][ T72] [ 797.757717][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 797.758330][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 797.758330][ T72] netdev_get_by_index+0x5e/0x80 [ 797.758330][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.758330][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.758330][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.758330][ T72] ipv6_add_addr+0x411/0x2000 [ 797.758330][ T72] inet6_addr_add+0x30e/0xa40 [ 797.758330][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.758330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.758330][ T72] netlink_rcv_skb+0x130/0x360 [ 797.758330][ T72] netlink_unicast+0x449/0x710 [ 797.758330][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.758330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.758330][ T72] ___sys_sendmsg+0xee/0x170 [ 797.758330][ T72] __sys_sendmsg+0xcd/0x170 [ 797.758330][ T72] do_syscall_64+0xc6/0x1e0 [ 797.758330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.758330][ T72] [ 797.760355][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 797.760355][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.760355][ T72] ipv6_find_idev+0x102/0x170 [ 797.760355][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.760355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.760355][ T72] netlink_rcv_skb+0x130/0x360 [ 797.760355][ T72] netlink_unicast+0x449/0x710 [ 797.760355][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.760355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.760355][ T72] ___sys_sendmsg+0xee/0x170 [ 797.760355][ T72] __sys_sendmsg+0xcd/0x170 [ 797.760355][ T72] do_syscall_64+0xc6/0x1e0 [ 797.760355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.760355][ T72] [ 797.761909][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 797.761909][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.761909][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.761909][ T72] ipv6_find_idev+0x102/0x170 [ 797.761909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.761909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.761909][ T72] netlink_rcv_skb+0x130/0x360 [ 797.761909][ T72] netlink_unicast+0x449/0x710 [ 797.761909][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.761909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.761909][ T72] ___sys_sendmsg+0xee/0x170 [ 797.761909][ T72] __sys_sendmsg+0xcd/0x170 [ 797.761909][ T72] do_syscall_64+0xc6/0x1e0 [ 797.761909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.761909][ T72] [ 797.763577][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 797.763906][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 797.763906][ T72] netdev_get_by_index+0x5e/0x80 [ 797.763906][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.763906][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.763906][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.763906][ T72] ipv6_add_addr+0x411/0x2000 [ 797.763906][ T72] inet6_addr_add+0x30e/0xa40 [ 797.763906][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.763906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.763906][ T72] netlink_rcv_skb+0x130/0x360 [ 797.763906][ T72] netlink_unicast+0x449/0x710 [ 797.763906][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.763906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.763906][ T72] ___sys_sendmsg+0xee/0x170 [ 797.763906][ T72] __sys_sendmsg+0xcd/0x170 [ 797.763906][ T72] do_syscall_64+0xc6/0x1e0 [ 797.763906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.763906][ T72] [ 797.765885][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 797.765885][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.765885][ T72] ipv6_find_idev+0x102/0x170 [ 797.765885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.765885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.765885][ T72] netlink_rcv_skb+0x130/0x360 [ 797.765885][ T72] netlink_unicast+0x449/0x710 [ 797.765885][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.765885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.765885][ T72] ___sys_sendmsg+0xee/0x170 [ 797.765885][ T72] __sys_sendmsg+0xcd/0x170 [ 797.765885][ T72] do_syscall_64+0xc6/0x1e0 [ 797.765885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.765885][ T72] [ 797.767460][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 797.767460][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.767460][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.767460][ T72] ipv6_find_idev+0x102/0x170 [ 797.767460][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.767460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.767460][ T72] netlink_rcv_skb+0x130/0x360 [ 797.767460][ T72] netlink_unicast+0x449/0x710 [ 797.767460][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.767460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.767460][ T72] ___sys_sendmsg+0xee/0x170 [ 797.767460][ T72] __sys_sendmsg+0xcd/0x170 [ 797.767460][ T72] do_syscall_64+0xc6/0x1e0 [ 797.767460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.767460][ T72] [ 797.769429][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 797.769697][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 797.769697][ T72] netdev_get_by_index+0x5e/0x80 [ 797.769697][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.769697][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.769697][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.769697][ T72] ipv6_add_addr+0x411/0x2000 [ 797.769697][ T72] inet6_addr_add+0x30e/0xa40 [ 797.769697][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.769697][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.769697][ T72] netlink_rcv_skb+0x130/0x360 [ 797.769697][ T72] netlink_unicast+0x449/0x710 [ 797.769697][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.769697][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.769697][ T72] ___sys_sendmsg+0xee/0x170 [ 797.769697][ T72] __sys_sendmsg+0xcd/0x170 [ 797.769697][ T72] do_syscall_64+0xc6/0x1e0 [ 797.769697][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.769697][ T72] [ 797.771902][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 797.771902][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.771902][ T72] ipv6_find_idev+0x102/0x170 [ 797.771902][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.771902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.771902][ T72] netlink_rcv_skb+0x130/0x360 [ 797.771902][ T72] netlink_unicast+0x449/0x710 [ 797.771902][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.771902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.771902][ T72] ___sys_sendmsg+0xee/0x170 [ 797.771902][ T72] __sys_sendmsg+0xcd/0x170 [ 797.771902][ T72] do_syscall_64+0xc6/0x1e0 [ 797.771902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.771902][ T72] [ 797.773679][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 797.773679][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.773679][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.773679][ T72] ipv6_find_idev+0x102/0x170 [ 797.773679][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.773679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.773679][ T72] netlink_rcv_skb+0x130/0x360 [ 797.773679][ T72] netlink_unicast+0x449/0x710 [ 797.773679][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.773679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.773679][ T72] ___sys_sendmsg+0xee/0x170 [ 797.773679][ T72] __sys_sendmsg+0xcd/0x170 [ 797.773679][ T72] do_syscall_64+0xc6/0x1e0 [ 797.773679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.773679][ T72] [ 797.775575][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 797.775902][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 797.775902][ T72] netdev_get_by_index+0x5e/0x80 [ 797.775902][ T72] fib6_nh_init+0x3d8/0x15b0 [ 797.775902][ T72] ip6_route_info_create+0xf18/0x17d0 [ 797.775902][ T72] addrconf_f6i_alloc+0x244/0x410 [ 797.775902][ T72] ipv6_add_addr+0x411/0x2000 [ 797.775902][ T72] inet6_addr_add+0x30e/0xa40 [ 797.775902][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 797.775902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.775902][ T72] netlink_rcv_skb+0x130/0x360 [ 797.775902][ T72] netlink_unicast+0x449/0x710 [ 797.775902][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.775902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.775902][ T72] ___sys_sendmsg+0xee/0x170 [ 797.775902][ T72] __sys_sendmsg+0xcd/0x170 [ 797.775902][ T72] do_syscall_64+0xc6/0x1e0 [ 797.775902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.775902][ T72] [ 797.778107][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 797.778107][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 797.778107][ T72] ipv6_find_idev+0x102/0x170 [ 797.778107][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.778107][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.778107][ T72] netlink_rcv_skb+0x130/0x360 [ 797.778107][ T72] netlink_unicast+0x449/0x710 [ 797.778107][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.778107][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.778107][ T72] ___sys_sendmsg+0xee/0x170 [ 797.778107][ T72] __sys_sendmsg+0xcd/0x170 [ 797.778107][ T72] do_syscall_64+0xc6/0x1e0 [ 797.778107][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.778107][ T72] [ 797.779830][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 797.779830][ T72] neigh_parms_alloc+0x1e5/0x510 [ 797.779830][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 797.779830][ T72] ipv6_find_idev+0x102/0x170 [ 797.779830][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.779830][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.779830][ T72] netlink_rcv_skb+0x130/0x360 [ 797.779830][ T72] netlink_unicast+0x449/0x710 [ 797.779830][ T72] netlink_sendmsg+0x723/0xbe0 [ 797.779830][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 797.779830][ T72] ___sys_sendmsg+0xee/0x170 [ 797.779830][ T72] __sys_sendmsg+0xcd/0x170 [ 797.779830][ T72] do_syscall_64+0xc6/0x1e0 [ 797.779830][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.779830][ T72] [ 808.022912][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 808.023353][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 808.023353][ T72] netdev_get_by_index+0x5e/0x80 [ 808.023353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.023353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.023353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.023353][ T72] ipv6_add_addr+0x411/0x2000 [ 808.023353][ T72] inet6_addr_add+0x30e/0xa40 [ 808.023353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.023353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.023353][ T72] netlink_rcv_skb+0x130/0x360 [ 808.023353][ T72] netlink_unicast+0x449/0x710 [ 808.023353][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.023353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.023353][ T72] ___sys_sendmsg+0xee/0x170 [ 808.023353][ T72] __sys_sendmsg+0xcd/0x170 [ 808.023353][ T72] do_syscall_64+0xc6/0x1e0 [ 808.023353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.023353][ T72] [ 808.025376][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 808.025376][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.025376][ T72] ipv6_find_idev+0x102/0x170 [ 808.025376][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.025376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.025376][ T72] netlink_rcv_skb+0x130/0x360 [ 808.025376][ T72] netlink_unicast+0x449/0x710 [ 808.025376][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.025376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.025376][ T72] ___sys_sendmsg+0xee/0x170 [ 808.025376][ T72] __sys_sendmsg+0xcd/0x170 [ 808.025376][ T72] do_syscall_64+0xc6/0x1e0 [ 808.025376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.025376][ T72] [ 808.026918][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 808.026918][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.026918][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.026918][ T72] ipv6_find_idev+0x102/0x170 [ 808.026918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.026918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.026918][ T72] netlink_rcv_skb+0x130/0x360 [ 808.026918][ T72] netlink_unicast+0x449/0x710 [ 808.026918][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.026918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.026918][ T72] ___sys_sendmsg+0xee/0x170 [ 808.026918][ T72] __sys_sendmsg+0xcd/0x170 [ 808.026918][ T72] do_syscall_64+0xc6/0x1e0 [ 808.026918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.026918][ T72] [ 808.028610][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 808.028899][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 808.028899][ T72] netdev_get_by_index+0x5e/0x80 [ 808.028899][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.028899][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.028899][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.028899][ T72] ipv6_add_addr+0x411/0x2000 [ 808.028899][ T72] inet6_addr_add+0x30e/0xa40 [ 808.028899][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.028899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.028899][ T72] netlink_rcv_skb+0x130/0x360 [ 808.028899][ T72] netlink_unicast+0x449/0x710 [ 808.028899][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.028899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.028899][ T72] ___sys_sendmsg+0xee/0x170 [ 808.028899][ T72] __sys_sendmsg+0xcd/0x170 [ 808.028899][ T72] do_syscall_64+0xc6/0x1e0 [ 808.028899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.028899][ T72] [ 808.030925][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 808.030925][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.030925][ T72] ipv6_find_idev+0x102/0x170 [ 808.030925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.030925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.030925][ T72] netlink_rcv_skb+0x130/0x360 [ 808.030925][ T72] netlink_unicast+0x449/0x710 [ 808.030925][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.030925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.030925][ T72] ___sys_sendmsg+0xee/0x170 [ 808.030925][ T72] __sys_sendmsg+0xcd/0x170 [ 808.030925][ T72] do_syscall_64+0xc6/0x1e0 [ 808.030925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.030925][ T72] [ 808.032501][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 808.032501][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.032501][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.032501][ T72] ipv6_find_idev+0x102/0x170 [ 808.032501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.032501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.032501][ T72] netlink_rcv_skb+0x130/0x360 [ 808.032501][ T72] netlink_unicast+0x449/0x710 [ 808.032501][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.032501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.032501][ T72] ___sys_sendmsg+0xee/0x170 [ 808.032501][ T72] __sys_sendmsg+0xcd/0x170 [ 808.032501][ T72] do_syscall_64+0xc6/0x1e0 [ 808.032501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.032501][ T72] [ 808.034194][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 808.034455][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 808.034455][ T72] netdev_get_by_index+0x5e/0x80 [ 808.034455][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.034455][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.034455][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.034455][ T72] ipv6_add_addr+0x411/0x2000 [ 808.034455][ T72] inet6_addr_add+0x30e/0xa40 [ 808.034455][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.034455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.034455][ T72] netlink_rcv_skb+0x130/0x360 [ 808.034455][ T72] netlink_unicast+0x449/0x710 [ 808.034455][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.034455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.034455][ T72] ___sys_sendmsg+0xee/0x170 [ 808.034455][ T72] __sys_sendmsg+0xcd/0x170 [ 808.034455][ T72] do_syscall_64+0xc6/0x1e0 [ 808.034455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.034455][ T72] [ 808.036429][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 808.036429][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.036429][ T72] ipv6_find_idev+0x102/0x170 [ 808.036429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.036429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.036429][ T72] netlink_rcv_skb+0x130/0x360 [ 808.036429][ T72] netlink_unicast+0x449/0x710 [ 808.036429][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.036429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.036429][ T72] ___sys_sendmsg+0xee/0x170 [ 808.036429][ T72] __sys_sendmsg+0xcd/0x170 [ 808.036429][ T72] do_syscall_64+0xc6/0x1e0 [ 808.036429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.036429][ T72] [ 808.037991][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 808.037991][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.037991][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.037991][ T72] ipv6_find_idev+0x102/0x170 [ 808.037991][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.037991][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.037991][ T72] netlink_rcv_skb+0x130/0x360 [ 808.037991][ T72] netlink_unicast+0x449/0x710 [ 808.037991][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.037991][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.037991][ T72] ___sys_sendmsg+0xee/0x170 [ 808.037991][ T72] __sys_sendmsg+0xcd/0x170 [ 808.037991][ T72] do_syscall_64+0xc6/0x1e0 [ 808.037991][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.037991][ T72] [ 808.039698][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 808.040404][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 808.040404][ T72] netdev_get_by_index+0x5e/0x80 [ 808.040404][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.040404][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.040404][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.040404][ T72] ipv6_add_addr+0x411/0x2000 [ 808.040404][ T72] inet6_addr_add+0x30e/0xa40 [ 808.040404][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.040404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.040404][ T72] netlink_rcv_skb+0x130/0x360 [ 808.040404][ T72] netlink_unicast+0x449/0x710 [ 808.040404][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.040404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.040404][ T72] ___sys_sendmsg+0xee/0x170 [ 808.040404][ T72] __sys_sendmsg+0xcd/0x170 [ 808.040404][ T72] do_syscall_64+0xc6/0x1e0 [ 808.040404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.040404][ T72] [ 808.042357][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 808.042357][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.042357][ T72] ipv6_find_idev+0x102/0x170 [ 808.042357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.042357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.042357][ T72] netlink_rcv_skb+0x130/0x360 [ 808.042357][ T72] netlink_unicast+0x449/0x710 [ 808.042357][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.042357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.042357][ T72] ___sys_sendmsg+0xee/0x170 [ 808.042357][ T72] __sys_sendmsg+0xcd/0x170 [ 808.042357][ T72] do_syscall_64+0xc6/0x1e0 [ 808.042357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.042357][ T72] [ 808.043868][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 808.043868][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.043868][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.043868][ T72] ipv6_find_idev+0x102/0x170 [ 808.043868][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.043868][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.043868][ T72] netlink_rcv_skb+0x130/0x360 [ 808.043868][ T72] netlink_unicast+0x449/0x710 [ 808.043868][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.043868][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.043868][ T72] ___sys_sendmsg+0xee/0x170 [ 808.043868][ T72] __sys_sendmsg+0xcd/0x170 [ 808.043868][ T72] do_syscall_64+0xc6/0x1e0 [ 808.043868][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.043868][ T72] [ 808.045579][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 808.045912][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 808.045912][ T72] netdev_get_by_index+0x5e/0x80 [ 808.045912][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.045912][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.045912][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.045912][ T72] ipv6_add_addr+0x411/0x2000 [ 808.045912][ T72] inet6_addr_add+0x30e/0xa40 [ 808.045912][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.045912][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.045912][ T72] netlink_rcv_skb+0x130/0x360 [ 808.045912][ T72] netlink_unicast+0x449/0x710 [ 808.045912][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.045912][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.045912][ T72] ___sys_sendmsg+0xee/0x170 [ 808.045912][ T72] __sys_sendmsg+0xcd/0x170 [ 808.045912][ T72] do_syscall_64+0xc6/0x1e0 [ 808.045912][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.045912][ T72] [ 808.047911][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 808.047911][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.047911][ T72] ipv6_find_idev+0x102/0x170 [ 808.047911][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.047911][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.047911][ T72] netlink_rcv_skb+0x130/0x360 [ 808.047911][ T72] netlink_unicast+0x449/0x710 [ 808.047911][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.047911][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.047911][ T72] ___sys_sendmsg+0xee/0x170 [ 808.047911][ T72] __sys_sendmsg+0xcd/0x170 [ 808.047911][ T72] do_syscall_64+0xc6/0x1e0 [ 808.047911][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.047911][ T72] [ 808.049456][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 808.049456][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.049456][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.049456][ T72] ipv6_find_idev+0x102/0x170 [ 808.049456][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.049456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.049456][ T72] netlink_rcv_skb+0x130/0x360 [ 808.049456][ T72] netlink_unicast+0x449/0x710 [ 808.049456][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.049456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.049456][ T72] ___sys_sendmsg+0xee/0x170 [ 808.049456][ T72] __sys_sendmsg+0xcd/0x170 [ 808.049456][ T72] do_syscall_64+0xc6/0x1e0 [ 808.049456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.049456][ T72] [ 808.051173][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 808.051438][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 808.051438][ T72] netdev_get_by_index+0x5e/0x80 [ 808.051438][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.051438][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.051438][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.051438][ T72] ipv6_add_addr+0x411/0x2000 [ 808.051438][ T72] inet6_addr_add+0x30e/0xa40 [ 808.051438][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.051438][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.051438][ T72] netlink_rcv_skb+0x130/0x360 [ 808.051438][ T72] netlink_unicast+0x449/0x710 [ 808.051438][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.051438][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.051438][ T72] ___sys_sendmsg+0xee/0x170 [ 808.051438][ T72] __sys_sendmsg+0xcd/0x170 [ 808.051438][ T72] do_syscall_64+0xc6/0x1e0 [ 808.051438][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.051438][ T72] [ 808.053464][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 808.053464][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.053464][ T72] ipv6_find_idev+0x102/0x170 [ 808.053464][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.053464][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.053464][ T72] netlink_rcv_skb+0x130/0x360 [ 808.053464][ T72] netlink_unicast+0x449/0x710 [ 808.053464][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.053464][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.053464][ T72] ___sys_sendmsg+0xee/0x170 [ 808.053464][ T72] __sys_sendmsg+0xcd/0x170 [ 808.053464][ T72] do_syscall_64+0xc6/0x1e0 [ 808.053464][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.053464][ T72] [ 808.055255][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 808.055255][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.055255][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.055255][ T72] ipv6_find_idev+0x102/0x170 [ 808.055255][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.055255][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.055255][ T72] netlink_rcv_skb+0x130/0x360 [ 808.055255][ T72] netlink_unicast+0x449/0x710 [ 808.055255][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.055255][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.055255][ T72] ___sys_sendmsg+0xee/0x170 [ 808.055255][ T72] __sys_sendmsg+0xcd/0x170 [ 808.055255][ T72] do_syscall_64+0xc6/0x1e0 [ 808.055255][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.055255][ T72] [ 808.057154][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 808.057413][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 808.057413][ T72] netdev_get_by_index+0x5e/0x80 [ 808.057413][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.057413][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.057413][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.057413][ T72] ipv6_add_addr+0x411/0x2000 [ 808.057413][ T72] inet6_addr_add+0x30e/0xa40 [ 808.057413][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.057413][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.057413][ T72] netlink_rcv_skb+0x130/0x360 [ 808.057413][ T72] netlink_unicast+0x449/0x710 [ 808.057413][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.057413][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.057413][ T72] ___sys_sendmsg+0xee/0x170 [ 808.057413][ T72] __sys_sendmsg+0xcd/0x170 [ 808.057413][ T72] do_syscall_64+0xc6/0x1e0 [ 808.057413][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.057413][ T72] [ 808.059727][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 808.059727][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.059727][ T72] ipv6_find_idev+0x102/0x170 [ 808.059727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.059727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.059727][ T72] netlink_rcv_skb+0x130/0x360 [ 808.059727][ T72] netlink_unicast+0x449/0x710 [ 808.059727][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.059727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.059727][ T72] ___sys_sendmsg+0xee/0x170 [ 808.059727][ T72] __sys_sendmsg+0xcd/0x170 [ 808.059727][ T72] do_syscall_64+0xc6/0x1e0 [ 808.059727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.059727][ T72] [ 808.061594][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 808.061594][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.061594][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.061594][ T72] ipv6_find_idev+0x102/0x170 [ 808.061594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.061594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.061594][ T72] netlink_rcv_skb+0x130/0x360 [ 808.061594][ T72] netlink_unicast+0x449/0x710 [ 808.061594][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.061594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.061594][ T72] ___sys_sendmsg+0xee/0x170 [ 808.061594][ T72] __sys_sendmsg+0xcd/0x170 [ 808.061594][ T72] do_syscall_64+0xc6/0x1e0 [ 808.061594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.061594][ T72] [ 808.063552][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 808.063882][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 808.063882][ T72] netdev_get_by_index+0x5e/0x80 [ 808.063882][ T72] fib6_nh_init+0x3d8/0x15b0 [ 808.063882][ T72] ip6_route_info_create+0xf18/0x17d0 [ 808.063882][ T72] addrconf_f6i_alloc+0x244/0x410 [ 808.063882][ T72] ipv6_add_addr+0x411/0x2000 [ 808.063882][ T72] inet6_addr_add+0x30e/0xa40 [ 808.063882][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 808.063882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.063882][ T72] netlink_rcv_skb+0x130/0x360 [ 808.063882][ T72] netlink_unicast+0x449/0x710 [ 808.063882][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.063882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.063882][ T72] ___sys_sendmsg+0xee/0x170 [ 808.063882][ T72] __sys_sendmsg+0xcd/0x170 [ 808.063882][ T72] do_syscall_64+0xc6/0x1e0 [ 808.063882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.063882][ T72] [ 808.066093][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 808.066093][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 808.066093][ T72] ipv6_find_idev+0x102/0x170 [ 808.066093][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.066093][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.066093][ T72] netlink_rcv_skb+0x130/0x360 [ 808.066093][ T72] netlink_unicast+0x449/0x710 [ 808.066093][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.066093][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.066093][ T72] ___sys_sendmsg+0xee/0x170 [ 808.066093][ T72] __sys_sendmsg+0xcd/0x170 [ 808.066093][ T72] do_syscall_64+0xc6/0x1e0 [ 808.066093][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.066093][ T72] [ 808.067804][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 808.067804][ T72] neigh_parms_alloc+0x1e5/0x510 [ 808.067804][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 808.067804][ T72] ipv6_find_idev+0x102/0x170 [ 808.067804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 808.067804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 808.067804][ T72] netlink_rcv_skb+0x130/0x360 [ 808.067804][ T72] netlink_unicast+0x449/0x710 [ 808.067804][ T72] netlink_sendmsg+0x723/0xbe0 [ 808.067804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 808.067804][ T72] ___sys_sendmsg+0xee/0x170 [ 808.067804][ T72] __sys_sendmsg+0xcd/0x170 [ 808.067804][ T72] do_syscall_64+0xc6/0x1e0 [ 808.067804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 808.067804][ T72] [ 818.310924][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 818.311368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 818.311368][ T72] netdev_get_by_index+0x5e/0x80 [ 818.311368][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.311368][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.311368][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.311368][ T72] ipv6_add_addr+0x411/0x2000 [ 818.311368][ T72] inet6_addr_add+0x30e/0xa40 [ 818.311368][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.311368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.311368][ T72] netlink_rcv_skb+0x130/0x360 [ 818.311368][ T72] netlink_unicast+0x449/0x710 [ 818.311368][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.311368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.311368][ T72] ___sys_sendmsg+0xee/0x170 [ 818.311368][ T72] __sys_sendmsg+0xcd/0x170 [ 818.311368][ T72] do_syscall_64+0xc6/0x1e0 [ 818.311368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.311368][ T72] [ 818.313566][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 818.313566][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.313566][ T72] ipv6_find_idev+0x102/0x170 [ 818.313566][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.313566][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.313566][ T72] netlink_rcv_skb+0x130/0x360 [ 818.313566][ T72] netlink_unicast+0x449/0x710 [ 818.313566][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.313566][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.313566][ T72] ___sys_sendmsg+0xee/0x170 [ 818.313566][ T72] __sys_sendmsg+0xcd/0x170 [ 818.313566][ T72] do_syscall_64+0xc6/0x1e0 [ 818.313566][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.313566][ T72] [ 818.315231][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 818.315231][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.315231][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.315231][ T72] ipv6_find_idev+0x102/0x170 [ 818.315231][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.315231][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.315231][ T72] netlink_rcv_skb+0x130/0x360 [ 818.315231][ T72] netlink_unicast+0x449/0x710 [ 818.315231][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.315231][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.315231][ T72] ___sys_sendmsg+0xee/0x170 [ 818.315231][ T72] __sys_sendmsg+0xcd/0x170 [ 818.315231][ T72] do_syscall_64+0xc6/0x1e0 [ 818.315231][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.315231][ T72] [ 818.317071][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 818.317387][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 818.317387][ T72] netdev_get_by_index+0x5e/0x80 [ 818.317387][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.317387][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.317387][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.317387][ T72] ipv6_add_addr+0x411/0x2000 [ 818.317387][ T72] inet6_addr_add+0x30e/0xa40 [ 818.317387][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.317387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.317387][ T72] netlink_rcv_skb+0x130/0x360 [ 818.317387][ T72] netlink_unicast+0x449/0x710 [ 818.317387][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.317387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.317387][ T72] ___sys_sendmsg+0xee/0x170 [ 818.317387][ T72] __sys_sendmsg+0xcd/0x170 [ 818.317387][ T72] do_syscall_64+0xc6/0x1e0 [ 818.317387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.317387][ T72] [ 818.319540][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 818.319540][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.319540][ T72] ipv6_find_idev+0x102/0x170 [ 818.319540][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.319540][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.319540][ T72] netlink_rcv_skb+0x130/0x360 [ 818.319540][ T72] netlink_unicast+0x449/0x710 [ 818.319540][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.319540][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.319540][ T72] ___sys_sendmsg+0xee/0x170 [ 818.319540][ T72] __sys_sendmsg+0xcd/0x170 [ 818.319540][ T72] do_syscall_64+0xc6/0x1e0 [ 818.319540][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.319540][ T72] [ 818.321194][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 818.321194][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.321194][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.321194][ T72] ipv6_find_idev+0x102/0x170 [ 818.321194][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.321194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.321194][ T72] netlink_rcv_skb+0x130/0x360 [ 818.321194][ T72] netlink_unicast+0x449/0x710 [ 818.321194][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.321194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.321194][ T72] ___sys_sendmsg+0xee/0x170 [ 818.321194][ T72] __sys_sendmsg+0xcd/0x170 [ 818.321194][ T72] do_syscall_64+0xc6/0x1e0 [ 818.321194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.321194][ T72] [ 818.323010][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 818.323293][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 818.323293][ T72] netdev_get_by_index+0x5e/0x80 [ 818.323293][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.323293][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.323293][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.323293][ T72] ipv6_add_addr+0x411/0x2000 [ 818.323293][ T72] inet6_addr_add+0x30e/0xa40 [ 818.323293][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.323293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.323293][ T72] netlink_rcv_skb+0x130/0x360 [ 818.323293][ T72] netlink_unicast+0x449/0x710 [ 818.323293][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.323293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.323293][ T72] ___sys_sendmsg+0xee/0x170 [ 818.323293][ T72] __sys_sendmsg+0xcd/0x170 [ 818.323293][ T72] do_syscall_64+0xc6/0x1e0 [ 818.323293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.323293][ T72] [ 818.325462][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 818.325462][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.325462][ T72] ipv6_find_idev+0x102/0x170 [ 818.325462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.325462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.325462][ T72] netlink_rcv_skb+0x130/0x360 [ 818.325462][ T72] netlink_unicast+0x449/0x710 [ 818.325462][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.325462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.325462][ T72] ___sys_sendmsg+0xee/0x170 [ 818.325462][ T72] __sys_sendmsg+0xcd/0x170 [ 818.325462][ T72] do_syscall_64+0xc6/0x1e0 [ 818.325462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.325462][ T72] [ 818.327073][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 818.327073][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.327073][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.327073][ T72] ipv6_find_idev+0x102/0x170 [ 818.327073][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.327073][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.327073][ T72] netlink_rcv_skb+0x130/0x360 [ 818.327073][ T72] netlink_unicast+0x449/0x710 [ 818.327073][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.327073][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.327073][ T72] ___sys_sendmsg+0xee/0x170 [ 818.327073][ T72] __sys_sendmsg+0xcd/0x170 [ 818.327073][ T72] do_syscall_64+0xc6/0x1e0 [ 818.327073][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.327073][ T72] [ 818.328771][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 818.329043][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 818.329043][ T72] netdev_get_by_index+0x5e/0x80 [ 818.329043][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.329043][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.329043][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.329043][ T72] ipv6_add_addr+0x411/0x2000 [ 818.329043][ T72] inet6_addr_add+0x30e/0xa40 [ 818.329043][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.329043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.329043][ T72] netlink_rcv_skb+0x130/0x360 [ 818.329043][ T72] netlink_unicast+0x449/0x710 [ 818.329043][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.329043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.329043][ T72] ___sys_sendmsg+0xee/0x170 [ 818.329043][ T72] __sys_sendmsg+0xcd/0x170 [ 818.329043][ T72] do_syscall_64+0xc6/0x1e0 [ 818.329043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.329043][ T72] [ 818.331048][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 818.331048][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.331048][ T72] ipv6_find_idev+0x102/0x170 [ 818.331048][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.331048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.331048][ T72] netlink_rcv_skb+0x130/0x360 [ 818.331048][ T72] netlink_unicast+0x449/0x710 [ 818.331048][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.331048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.331048][ T72] ___sys_sendmsg+0xee/0x170 [ 818.331048][ T72] __sys_sendmsg+0xcd/0x170 [ 818.331048][ T72] do_syscall_64+0xc6/0x1e0 [ 818.331048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.331048][ T72] [ 818.332589][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 818.332589][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.332589][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.332589][ T72] ipv6_find_idev+0x102/0x170 [ 818.332589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.332589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.332589][ T72] netlink_rcv_skb+0x130/0x360 [ 818.332589][ T72] netlink_unicast+0x449/0x710 [ 818.332589][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.332589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.332589][ T72] ___sys_sendmsg+0xee/0x170 [ 818.332589][ T72] __sys_sendmsg+0xcd/0x170 [ 818.332589][ T72] do_syscall_64+0xc6/0x1e0 [ 818.332589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.332589][ T72] [ 818.334686][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 818.335306][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 818.335306][ T72] netdev_get_by_index+0x5e/0x80 [ 818.335306][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.335306][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.335306][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.335306][ T72] ipv6_add_addr+0x411/0x2000 [ 818.335306][ T72] inet6_addr_add+0x30e/0xa40 [ 818.335306][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.335306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.335306][ T72] netlink_rcv_skb+0x130/0x360 [ 818.335306][ T72] netlink_unicast+0x449/0x710 [ 818.335306][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.335306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.335306][ T72] ___sys_sendmsg+0xee/0x170 [ 818.335306][ T72] __sys_sendmsg+0xcd/0x170 [ 818.335306][ T72] do_syscall_64+0xc6/0x1e0 [ 818.335306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.335306][ T72] [ 818.337311][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 818.337311][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.337311][ T72] ipv6_find_idev+0x102/0x170 [ 818.337311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.337311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.337311][ T72] netlink_rcv_skb+0x130/0x360 [ 818.337311][ T72] netlink_unicast+0x449/0x710 [ 818.337311][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.337311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.337311][ T72] ___sys_sendmsg+0xee/0x170 [ 818.337311][ T72] __sys_sendmsg+0xcd/0x170 [ 818.337311][ T72] do_syscall_64+0xc6/0x1e0 [ 818.337311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.337311][ T72] [ 818.338848][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 818.338848][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.338848][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.338848][ T72] ipv6_find_idev+0x102/0x170 [ 818.338848][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.338848][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.338848][ T72] netlink_rcv_skb+0x130/0x360 [ 818.338848][ T72] netlink_unicast+0x449/0x710 [ 818.338848][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.338848][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.338848][ T72] ___sys_sendmsg+0xee/0x170 [ 818.338848][ T72] __sys_sendmsg+0xcd/0x170 [ 818.338848][ T72] do_syscall_64+0xc6/0x1e0 [ 818.338848][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.338848][ T72] [ 818.340493][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 818.340758][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 818.340758][ T72] netdev_get_by_index+0x5e/0x80 [ 818.340758][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.340758][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.340758][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.340758][ T72] ipv6_add_addr+0x411/0x2000 [ 818.340758][ T72] inet6_addr_add+0x30e/0xa40 [ 818.340758][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.340758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.340758][ T72] netlink_rcv_skb+0x130/0x360 [ 818.340758][ T72] netlink_unicast+0x449/0x710 [ 818.340758][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.340758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.340758][ T72] ___sys_sendmsg+0xee/0x170 [ 818.340758][ T72] __sys_sendmsg+0xcd/0x170 [ 818.340758][ T72] do_syscall_64+0xc6/0x1e0 [ 818.340758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.340758][ T72] [ 818.342715][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 818.342715][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.342715][ T72] ipv6_find_idev+0x102/0x170 [ 818.342715][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.342715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.342715][ T72] netlink_rcv_skb+0x130/0x360 [ 818.342715][ T72] netlink_unicast+0x449/0x710 [ 818.342715][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.342715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.342715][ T72] ___sys_sendmsg+0xee/0x170 [ 818.342715][ T72] __sys_sendmsg+0xcd/0x170 [ 818.342715][ T72] do_syscall_64+0xc6/0x1e0 [ 818.342715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.342715][ T72] [ 818.344290][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 818.344290][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.344290][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.344290][ T72] ipv6_find_idev+0x102/0x170 [ 818.344290][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.344290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.344290][ T72] netlink_rcv_skb+0x130/0x360 [ 818.344290][ T72] netlink_unicast+0x449/0x710 [ 818.344290][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.344290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.344290][ T72] ___sys_sendmsg+0xee/0x170 [ 818.344290][ T72] __sys_sendmsg+0xcd/0x170 [ 818.344290][ T72] do_syscall_64+0xc6/0x1e0 [ 818.344290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.344290][ T72] [ 818.346230][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 818.346491][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 818.346491][ T72] netdev_get_by_index+0x5e/0x80 [ 818.346491][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.346491][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.346491][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.346491][ T72] ipv6_add_addr+0x411/0x2000 [ 818.346491][ T72] inet6_addr_add+0x30e/0xa40 [ 818.346491][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.346491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.346491][ T72] netlink_rcv_skb+0x130/0x360 [ 818.346491][ T72] netlink_unicast+0x449/0x710 [ 818.346491][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.346491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.346491][ T72] ___sys_sendmsg+0xee/0x170 [ 818.346491][ T72] __sys_sendmsg+0xcd/0x170 [ 818.346491][ T72] do_syscall_64+0xc6/0x1e0 [ 818.346491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.346491][ T72] [ 818.348734][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 818.348734][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.348734][ T72] ipv6_find_idev+0x102/0x170 [ 818.348734][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.348734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.348734][ T72] netlink_rcv_skb+0x130/0x360 [ 818.348734][ T72] netlink_unicast+0x449/0x710 [ 818.348734][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.348734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.348734][ T72] ___sys_sendmsg+0xee/0x170 [ 818.348734][ T72] __sys_sendmsg+0xcd/0x170 [ 818.348734][ T72] do_syscall_64+0xc6/0x1e0 [ 818.348734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.348734][ T72] [ 818.350437][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 818.350437][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.350437][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.350437][ T72] ipv6_find_idev+0x102/0x170 [ 818.350437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.350437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.350437][ T72] netlink_rcv_skb+0x130/0x360 [ 818.350437][ T72] netlink_unicast+0x449/0x710 [ 818.350437][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.350437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.350437][ T72] ___sys_sendmsg+0xee/0x170 [ 818.350437][ T72] __sys_sendmsg+0xcd/0x170 [ 818.350437][ T72] do_syscall_64+0xc6/0x1e0 [ 818.350437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.350437][ T72] [ 818.352359][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 818.352666][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 818.352666][ T72] netdev_get_by_index+0x5e/0x80 [ 818.352666][ T72] fib6_nh_init+0x3d8/0x15b0 [ 818.352666][ T72] ip6_route_info_create+0xf18/0x17d0 [ 818.352666][ T72] addrconf_f6i_alloc+0x244/0x410 [ 818.352666][ T72] ipv6_add_addr+0x411/0x2000 [ 818.352666][ T72] inet6_addr_add+0x30e/0xa40 [ 818.352666][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 818.352666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.352666][ T72] netlink_rcv_skb+0x130/0x360 [ 818.352666][ T72] netlink_unicast+0x449/0x710 [ 818.352666][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.352666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.352666][ T72] ___sys_sendmsg+0xee/0x170 [ 818.352666][ T72] __sys_sendmsg+0xcd/0x170 [ 818.352666][ T72] do_syscall_64+0xc6/0x1e0 [ 818.352666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.352666][ T72] [ 818.354851][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 818.354851][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 818.354851][ T72] ipv6_find_idev+0x102/0x170 [ 818.354851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.354851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.354851][ T72] netlink_rcv_skb+0x130/0x360 [ 818.354851][ T72] netlink_unicast+0x449/0x710 [ 818.354851][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.354851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.354851][ T72] ___sys_sendmsg+0xee/0x170 [ 818.354851][ T72] __sys_sendmsg+0xcd/0x170 [ 818.354851][ T72] do_syscall_64+0xc6/0x1e0 [ 818.354851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.354851][ T72] [ 818.356715][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 818.356715][ T72] neigh_parms_alloc+0x1e5/0x510 [ 818.356715][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 818.356715][ T72] ipv6_find_idev+0x102/0x170 [ 818.356715][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 818.356715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 818.356715][ T72] netlink_rcv_skb+0x130/0x360 [ 818.356715][ T72] netlink_unicast+0x449/0x710 [ 818.356715][ T72] netlink_sendmsg+0x723/0xbe0 [ 818.356715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 818.356715][ T72] ___sys_sendmsg+0xee/0x170 [ 818.356715][ T72] __sys_sendmsg+0xcd/0x170 [ 818.356715][ T72] do_syscall_64+0xc6/0x1e0 [ 818.356715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 818.356715][ T72] [ 828.413882][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 828.414360][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 828.414360][ T72] netdev_get_by_index+0x5e/0x80 [ 828.414360][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.414360][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.414360][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.414360][ T72] ipv6_add_addr+0x411/0x2000 [ 828.414360][ T72] inet6_addr_add+0x30e/0xa40 [ 828.414360][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.414360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.414360][ T72] netlink_rcv_skb+0x130/0x360 [ 828.414360][ T72] netlink_unicast+0x449/0x710 [ 828.414360][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.414360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.414360][ T72] ___sys_sendmsg+0xee/0x170 [ 828.414360][ T72] __sys_sendmsg+0xcd/0x170 [ 828.414360][ T72] do_syscall_64+0xc6/0x1e0 [ 828.414360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.414360][ T72] [ 828.416352][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 828.416352][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.416352][ T72] ipv6_find_idev+0x102/0x170 [ 828.416352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.416352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.416352][ T72] netlink_rcv_skb+0x130/0x360 [ 828.416352][ T72] netlink_unicast+0x449/0x710 [ 828.416352][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.416352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.416352][ T72] ___sys_sendmsg+0xee/0x170 [ 828.416352][ T72] __sys_sendmsg+0xcd/0x170 [ 828.416352][ T72] do_syscall_64+0xc6/0x1e0 [ 828.416352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.416352][ T72] [ 828.417885][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 828.417885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.417885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.417885][ T72] ipv6_find_idev+0x102/0x170 [ 828.417885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.417885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.417885][ T72] netlink_rcv_skb+0x130/0x360 [ 828.417885][ T72] netlink_unicast+0x449/0x710 [ 828.417885][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.417885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.417885][ T72] ___sys_sendmsg+0xee/0x170 [ 828.417885][ T72] __sys_sendmsg+0xcd/0x170 [ 828.417885][ T72] do_syscall_64+0xc6/0x1e0 [ 828.417885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.417885][ T72] [ 828.419561][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 828.419847][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 828.419847][ T72] netdev_get_by_index+0x5e/0x80 [ 828.419847][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.419847][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.419847][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.419847][ T72] ipv6_add_addr+0x411/0x2000 [ 828.419847][ T72] inet6_addr_add+0x30e/0xa40 [ 828.419847][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.419847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.419847][ T72] netlink_rcv_skb+0x130/0x360 [ 828.419847][ T72] netlink_unicast+0x449/0x710 [ 828.419847][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.419847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.419847][ T72] ___sys_sendmsg+0xee/0x170 [ 828.419847][ T72] __sys_sendmsg+0xcd/0x170 [ 828.419847][ T72] do_syscall_64+0xc6/0x1e0 [ 828.419847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.419847][ T72] [ 828.421818][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 828.421818][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.421818][ T72] ipv6_find_idev+0x102/0x170 [ 828.421818][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.421818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.421818][ T72] netlink_rcv_skb+0x130/0x360 [ 828.421818][ T72] netlink_unicast+0x449/0x710 [ 828.421818][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.421818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.421818][ T72] ___sys_sendmsg+0xee/0x170 [ 828.421818][ T72] __sys_sendmsg+0xcd/0x170 [ 828.421818][ T72] do_syscall_64+0xc6/0x1e0 [ 828.421818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.421818][ T72] [ 828.423347][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 828.423347][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.423347][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.423347][ T72] ipv6_find_idev+0x102/0x170 [ 828.423347][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.423347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.423347][ T72] netlink_rcv_skb+0x130/0x360 [ 828.423347][ T72] netlink_unicast+0x449/0x710 [ 828.423347][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.423347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.423347][ T72] ___sys_sendmsg+0xee/0x170 [ 828.423347][ T72] __sys_sendmsg+0xcd/0x170 [ 828.423347][ T72] do_syscall_64+0xc6/0x1e0 [ 828.423347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.423347][ T72] [ 828.425009][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 828.425267][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 828.425267][ T72] netdev_get_by_index+0x5e/0x80 [ 828.425267][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.425267][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.425267][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.425267][ T72] ipv6_add_addr+0x411/0x2000 [ 828.425267][ T72] inet6_addr_add+0x30e/0xa40 [ 828.425267][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.425267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.425267][ T72] netlink_rcv_skb+0x130/0x360 [ 828.425267][ T72] netlink_unicast+0x449/0x710 [ 828.425267][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.425267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.425267][ T72] ___sys_sendmsg+0xee/0x170 [ 828.425267][ T72] __sys_sendmsg+0xcd/0x170 [ 828.425267][ T72] do_syscall_64+0xc6/0x1e0 [ 828.425267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.425267][ T72] [ 828.427247][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 828.427247][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.427247][ T72] ipv6_find_idev+0x102/0x170 [ 828.427247][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.427247][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.427247][ T72] netlink_rcv_skb+0x130/0x360 [ 828.427247][ T72] netlink_unicast+0x449/0x710 [ 828.427247][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.427247][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.427247][ T72] ___sys_sendmsg+0xee/0x170 [ 828.427247][ T72] __sys_sendmsg+0xcd/0x170 [ 828.427247][ T72] do_syscall_64+0xc6/0x1e0 [ 828.427247][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.427247][ T72] [ 828.428762][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 828.428762][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.428762][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.428762][ T72] ipv6_find_idev+0x102/0x170 [ 828.428762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.428762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.428762][ T72] netlink_rcv_skb+0x130/0x360 [ 828.428762][ T72] netlink_unicast+0x449/0x710 [ 828.428762][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.428762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.428762][ T72] ___sys_sendmsg+0xee/0x170 [ 828.428762][ T72] __sys_sendmsg+0xcd/0x170 [ 828.428762][ T72] do_syscall_64+0xc6/0x1e0 [ 828.428762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.428762][ T72] [ 828.430513][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 828.430786][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 828.430786][ T72] netdev_get_by_index+0x5e/0x80 [ 828.430786][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.430786][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.430786][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.430786][ T72] ipv6_add_addr+0x411/0x2000 [ 828.430786][ T72] inet6_addr_add+0x30e/0xa40 [ 828.430786][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.430786][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.430786][ T72] netlink_rcv_skb+0x130/0x360 [ 828.430786][ T72] netlink_unicast+0x449/0x710 [ 828.430786][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.430786][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.430786][ T72] ___sys_sendmsg+0xee/0x170 [ 828.430786][ T72] __sys_sendmsg+0xcd/0x170 [ 828.430786][ T72] do_syscall_64+0xc6/0x1e0 [ 828.430786][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.430786][ T72] [ 828.433282][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 828.433282][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.433282][ T72] ipv6_find_idev+0x102/0x170 [ 828.433282][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.433282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.433282][ T72] netlink_rcv_skb+0x130/0x360 [ 828.433282][ T72] netlink_unicast+0x449/0x710 [ 828.433282][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.433282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.433282][ T72] ___sys_sendmsg+0xee/0x170 [ 828.433282][ T72] __sys_sendmsg+0xcd/0x170 [ 828.433282][ T72] do_syscall_64+0xc6/0x1e0 [ 828.433282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.433282][ T72] [ 828.434806][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 828.434806][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.434806][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.434806][ T72] ipv6_find_idev+0x102/0x170 [ 828.434806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.434806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.434806][ T72] netlink_rcv_skb+0x130/0x360 [ 828.434806][ T72] netlink_unicast+0x449/0x710 [ 828.434806][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.434806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.434806][ T72] ___sys_sendmsg+0xee/0x170 [ 828.434806][ T72] __sys_sendmsg+0xcd/0x170 [ 828.434806][ T72] do_syscall_64+0xc6/0x1e0 [ 828.434806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.434806][ T72] [ 828.436503][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 828.436768][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 828.436768][ T72] netdev_get_by_index+0x5e/0x80 [ 828.436768][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.436768][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.436768][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.436768][ T72] ipv6_add_addr+0x411/0x2000 [ 828.436768][ T72] inet6_addr_add+0x30e/0xa40 [ 828.436768][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.436768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.436768][ T72] netlink_rcv_skb+0x130/0x360 [ 828.436768][ T72] netlink_unicast+0x449/0x710 [ 828.436768][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.436768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.436768][ T72] ___sys_sendmsg+0xee/0x170 [ 828.436768][ T72] __sys_sendmsg+0xcd/0x170 [ 828.436768][ T72] do_syscall_64+0xc6/0x1e0 [ 828.436768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.436768][ T72] [ 828.438740][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 828.438740][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.438740][ T72] ipv6_find_idev+0x102/0x170 [ 828.438740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.438740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.438740][ T72] netlink_rcv_skb+0x130/0x360 [ 828.438740][ T72] netlink_unicast+0x449/0x710 [ 828.438740][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.438740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.438740][ T72] ___sys_sendmsg+0xee/0x170 [ 828.438740][ T72] __sys_sendmsg+0xcd/0x170 [ 828.438740][ T72] do_syscall_64+0xc6/0x1e0 [ 828.438740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.438740][ T72] [ 828.440255][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 828.440255][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.440255][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.440255][ T72] ipv6_find_idev+0x102/0x170 [ 828.440255][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.440255][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.440255][ T72] netlink_rcv_skb+0x130/0x360 [ 828.440255][ T72] netlink_unicast+0x449/0x710 [ 828.440255][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.440255][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.440255][ T72] ___sys_sendmsg+0xee/0x170 [ 828.440255][ T72] __sys_sendmsg+0xcd/0x170 [ 828.440255][ T72] do_syscall_64+0xc6/0x1e0 [ 828.440255][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.440255][ T72] [ 828.442130][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 828.442392][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 828.442392][ T72] netdev_get_by_index+0x5e/0x80 [ 828.442392][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.442392][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.442392][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.442392][ T72] ipv6_add_addr+0x411/0x2000 [ 828.442392][ T72] inet6_addr_add+0x30e/0xa40 [ 828.442392][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.442392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.442392][ T72] netlink_rcv_skb+0x130/0x360 [ 828.442392][ T72] netlink_unicast+0x449/0x710 [ 828.442392][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.442392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.442392][ T72] ___sys_sendmsg+0xee/0x170 [ 828.442392][ T72] __sys_sendmsg+0xcd/0x170 [ 828.442392][ T72] do_syscall_64+0xc6/0x1e0 [ 828.442392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.442392][ T72] [ 828.444590][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 828.444590][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.444590][ T72] ipv6_find_idev+0x102/0x170 [ 828.444590][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.444590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.444590][ T72] netlink_rcv_skb+0x130/0x360 [ 828.444590][ T72] netlink_unicast+0x449/0x710 [ 828.444590][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.444590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.444590][ T72] ___sys_sendmsg+0xee/0x170 [ 828.444590][ T72] __sys_sendmsg+0xcd/0x170 [ 828.444590][ T72] do_syscall_64+0xc6/0x1e0 [ 828.444590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.444590][ T72] [ 828.446342][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 828.446342][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.446342][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.446342][ T72] ipv6_find_idev+0x102/0x170 [ 828.446342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.446342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.446342][ T72] netlink_rcv_skb+0x130/0x360 [ 828.446342][ T72] netlink_unicast+0x449/0x710 [ 828.446342][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.446342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.446342][ T72] ___sys_sendmsg+0xee/0x170 [ 828.446342][ T72] __sys_sendmsg+0xcd/0x170 [ 828.446342][ T72] do_syscall_64+0xc6/0x1e0 [ 828.446342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.446342][ T72] [ 828.448220][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 828.448475][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 828.448475][ T72] netdev_get_by_index+0x5e/0x80 [ 828.448475][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.448475][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.448475][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.448475][ T72] ipv6_add_addr+0x411/0x2000 [ 828.448475][ T72] inet6_addr_add+0x30e/0xa40 [ 828.448475][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.448475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.448475][ T72] netlink_rcv_skb+0x130/0x360 [ 828.448475][ T72] netlink_unicast+0x449/0x710 [ 828.448475][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.448475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.448475][ T72] ___sys_sendmsg+0xee/0x170 [ 828.448475][ T72] __sys_sendmsg+0xcd/0x170 [ 828.448475][ T72] do_syscall_64+0xc6/0x1e0 [ 828.448475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.448475][ T72] [ 828.450617][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 828.450617][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.450617][ T72] ipv6_find_idev+0x102/0x170 [ 828.450617][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.450617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.450617][ T72] netlink_rcv_skb+0x130/0x360 [ 828.450617][ T72] netlink_unicast+0x449/0x710 [ 828.450617][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.450617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.450617][ T72] ___sys_sendmsg+0xee/0x170 [ 828.450617][ T72] __sys_sendmsg+0xcd/0x170 [ 828.450617][ T72] do_syscall_64+0xc6/0x1e0 [ 828.450617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.450617][ T72] [ 828.452305][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 828.452305][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.452305][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.452305][ T72] ipv6_find_idev+0x102/0x170 [ 828.452305][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.452305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.452305][ T72] netlink_rcv_skb+0x130/0x360 [ 828.452305][ T72] netlink_unicast+0x449/0x710 [ 828.452305][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.452305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.452305][ T72] ___sys_sendmsg+0xee/0x170 [ 828.452305][ T72] __sys_sendmsg+0xcd/0x170 [ 828.452305][ T72] do_syscall_64+0xc6/0x1e0 [ 828.452305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.452305][ T72] [ 828.454239][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 828.454497][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 828.454497][ T72] netdev_get_by_index+0x5e/0x80 [ 828.454497][ T72] fib6_nh_init+0x3d8/0x15b0 [ 828.454497][ T72] ip6_route_info_create+0xf18/0x17d0 [ 828.454497][ T72] addrconf_f6i_alloc+0x244/0x410 [ 828.454497][ T72] ipv6_add_addr+0x411/0x2000 [ 828.454497][ T72] inet6_addr_add+0x30e/0xa40 [ 828.454497][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 828.454497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.454497][ T72] netlink_rcv_skb+0x130/0x360 [ 828.454497][ T72] netlink_unicast+0x449/0x710 [ 828.454497][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.454497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.454497][ T72] ___sys_sendmsg+0xee/0x170 [ 828.454497][ T72] __sys_sendmsg+0xcd/0x170 [ 828.454497][ T72] do_syscall_64+0xc6/0x1e0 [ 828.454497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.454497][ T72] [ 828.456699][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 828.456699][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 828.456699][ T72] ipv6_find_idev+0x102/0x170 [ 828.456699][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.456699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.456699][ T72] netlink_rcv_skb+0x130/0x360 [ 828.456699][ T72] netlink_unicast+0x449/0x710 [ 828.456699][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.456699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.456699][ T72] ___sys_sendmsg+0xee/0x170 [ 828.456699][ T72] __sys_sendmsg+0xcd/0x170 [ 828.456699][ T72] do_syscall_64+0xc6/0x1e0 [ 828.456699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.456699][ T72] [ 828.458801][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 828.458801][ T72] neigh_parms_alloc+0x1e5/0x510 [ 828.458801][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 828.458801][ T72] ipv6_find_idev+0x102/0x170 [ 828.458801][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 828.458801][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 828.458801][ T72] netlink_rcv_skb+0x130/0x360 [ 828.458801][ T72] netlink_unicast+0x449/0x710 [ 828.458801][ T72] netlink_sendmsg+0x723/0xbe0 [ 828.458801][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 828.458801][ T72] ___sys_sendmsg+0xee/0x170 [ 828.458801][ T72] __sys_sendmsg+0xcd/0x170 [ 828.458801][ T72] do_syscall_64+0xc6/0x1e0 [ 828.458801][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 828.458801][ T72] [ 838.606863][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 838.607294][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 838.607294][ T72] netdev_get_by_index+0x5e/0x80 [ 838.607294][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.607294][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.607294][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.607294][ T72] ipv6_add_addr+0x411/0x2000 [ 838.607294][ T72] inet6_addr_add+0x30e/0xa40 [ 838.607294][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.607294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.607294][ T72] netlink_rcv_skb+0x130/0x360 [ 838.607294][ T72] netlink_unicast+0x449/0x710 [ 838.607294][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.607294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.607294][ T72] ___sys_sendmsg+0xee/0x170 [ 838.607294][ T72] __sys_sendmsg+0xcd/0x170 [ 838.607294][ T72] do_syscall_64+0xc6/0x1e0 [ 838.607294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.607294][ T72] [ 838.609272][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 838.609272][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.609272][ T72] ipv6_find_idev+0x102/0x170 [ 838.609272][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.609272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.609272][ T72] netlink_rcv_skb+0x130/0x360 [ 838.609272][ T72] netlink_unicast+0x449/0x710 [ 838.609272][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.609272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.609272][ T72] ___sys_sendmsg+0xee/0x170 [ 838.609272][ T72] __sys_sendmsg+0xcd/0x170 [ 838.609272][ T72] do_syscall_64+0xc6/0x1e0 [ 838.609272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.609272][ T72] [ 838.610793][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 838.610793][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.610793][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.610793][ T72] ipv6_find_idev+0x102/0x170 [ 838.610793][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.610793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.610793][ T72] netlink_rcv_skb+0x130/0x360 [ 838.610793][ T72] netlink_unicast+0x449/0x710 [ 838.610793][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.610793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.610793][ T72] ___sys_sendmsg+0xee/0x170 [ 838.610793][ T72] __sys_sendmsg+0xcd/0x170 [ 838.610793][ T72] do_syscall_64+0xc6/0x1e0 [ 838.610793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.610793][ T72] [ 838.612459][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 838.612726][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 838.612726][ T72] netdev_get_by_index+0x5e/0x80 [ 838.612726][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.612726][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.612726][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.612726][ T72] ipv6_add_addr+0x411/0x2000 [ 838.612726][ T72] inet6_addr_add+0x30e/0xa40 [ 838.612726][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.612726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.612726][ T72] netlink_rcv_skb+0x130/0x360 [ 838.612726][ T72] netlink_unicast+0x449/0x710 [ 838.612726][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.612726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.612726][ T72] ___sys_sendmsg+0xee/0x170 [ 838.612726][ T72] __sys_sendmsg+0xcd/0x170 [ 838.612726][ T72] do_syscall_64+0xc6/0x1e0 [ 838.612726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.612726][ T72] [ 838.614691][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 838.614691][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.614691][ T72] ipv6_find_idev+0x102/0x170 [ 838.614691][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.614691][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.614691][ T72] netlink_rcv_skb+0x130/0x360 [ 838.614691][ T72] netlink_unicast+0x449/0x710 [ 838.614691][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.614691][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.614691][ T72] ___sys_sendmsg+0xee/0x170 [ 838.614691][ T72] __sys_sendmsg+0xcd/0x170 [ 838.614691][ T72] do_syscall_64+0xc6/0x1e0 [ 838.614691][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.614691][ T72] [ 838.616206][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 838.616206][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.616206][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.616206][ T72] ipv6_find_idev+0x102/0x170 [ 838.616206][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.616206][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.616206][ T72] netlink_rcv_skb+0x130/0x360 [ 838.616206][ T72] netlink_unicast+0x449/0x710 [ 838.616206][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.616206][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.616206][ T72] ___sys_sendmsg+0xee/0x170 [ 838.616206][ T72] __sys_sendmsg+0xcd/0x170 [ 838.616206][ T72] do_syscall_64+0xc6/0x1e0 [ 838.616206][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.616206][ T72] [ 838.617875][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 838.618133][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 838.618133][ T72] netdev_get_by_index+0x5e/0x80 [ 838.618133][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.618133][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.618133][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.618133][ T72] ipv6_add_addr+0x411/0x2000 [ 838.618133][ T72] inet6_addr_add+0x30e/0xa40 [ 838.618133][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.618133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.618133][ T72] netlink_rcv_skb+0x130/0x360 [ 838.618133][ T72] netlink_unicast+0x449/0x710 [ 838.618133][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.618133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.618133][ T72] ___sys_sendmsg+0xee/0x170 [ 838.618133][ T72] __sys_sendmsg+0xcd/0x170 [ 838.618133][ T72] do_syscall_64+0xc6/0x1e0 [ 838.618133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.618133][ T72] [ 838.620098][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 838.620098][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.620098][ T72] ipv6_find_idev+0x102/0x170 [ 838.620098][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.620098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.620098][ T72] netlink_rcv_skb+0x130/0x360 [ 838.620098][ T72] netlink_unicast+0x449/0x710 [ 838.620098][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.620098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.620098][ T72] ___sys_sendmsg+0xee/0x170 [ 838.620098][ T72] __sys_sendmsg+0xcd/0x170 [ 838.620098][ T72] do_syscall_64+0xc6/0x1e0 [ 838.620098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.620098][ T72] [ 838.621613][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 838.621613][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.621613][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.621613][ T72] ipv6_find_idev+0x102/0x170 [ 838.621613][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.621613][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.621613][ T72] netlink_rcv_skb+0x130/0x360 [ 838.621613][ T72] netlink_unicast+0x449/0x710 [ 838.621613][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.621613][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.621613][ T72] ___sys_sendmsg+0xee/0x170 [ 838.621613][ T72] __sys_sendmsg+0xcd/0x170 [ 838.621613][ T72] do_syscall_64+0xc6/0x1e0 [ 838.621613][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.621613][ T72] [ 838.623263][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 838.623529][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 838.623529][ T72] netdev_get_by_index+0x5e/0x80 [ 838.623529][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.623529][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.623529][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.623529][ T72] ipv6_add_addr+0x411/0x2000 [ 838.623529][ T72] inet6_addr_add+0x30e/0xa40 [ 838.623529][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.623529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.623529][ T72] netlink_rcv_skb+0x130/0x360 [ 838.623529][ T72] netlink_unicast+0x449/0x710 [ 838.623529][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.623529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.623529][ T72] ___sys_sendmsg+0xee/0x170 [ 838.623529][ T72] __sys_sendmsg+0xcd/0x170 [ 838.623529][ T72] do_syscall_64+0xc6/0x1e0 [ 838.623529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.623529][ T72] [ 838.625494][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 838.625494][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.625494][ T72] ipv6_find_idev+0x102/0x170 [ 838.625494][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.625494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.625494][ T72] netlink_rcv_skb+0x130/0x360 [ 838.625494][ T72] netlink_unicast+0x449/0x710 [ 838.625494][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.625494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.625494][ T72] ___sys_sendmsg+0xee/0x170 [ 838.625494][ T72] __sys_sendmsg+0xcd/0x170 [ 838.625494][ T72] do_syscall_64+0xc6/0x1e0 [ 838.625494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.625494][ T72] [ 838.627013][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 838.627013][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.627013][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.627013][ T72] ipv6_find_idev+0x102/0x170 [ 838.627013][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.627013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.627013][ T72] netlink_rcv_skb+0x130/0x360 [ 838.627013][ T72] netlink_unicast+0x449/0x710 [ 838.627013][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.627013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.627013][ T72] ___sys_sendmsg+0xee/0x170 [ 838.627013][ T72] __sys_sendmsg+0xcd/0x170 [ 838.627013][ T72] do_syscall_64+0xc6/0x1e0 [ 838.627013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.627013][ T72] [ 838.629096][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 838.629750][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 838.629750][ T72] netdev_get_by_index+0x5e/0x80 [ 838.629750][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.629750][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.629750][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.629750][ T72] ipv6_add_addr+0x411/0x2000 [ 838.629750][ T72] inet6_addr_add+0x30e/0xa40 [ 838.629750][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.629750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.629750][ T72] netlink_rcv_skb+0x130/0x360 [ 838.629750][ T72] netlink_unicast+0x449/0x710 [ 838.629750][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.629750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.629750][ T72] ___sys_sendmsg+0xee/0x170 [ 838.629750][ T72] __sys_sendmsg+0xcd/0x170 [ 838.629750][ T72] do_syscall_64+0xc6/0x1e0 [ 838.629750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.629750][ T72] [ 838.631712][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 838.631712][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.631712][ T72] ipv6_find_idev+0x102/0x170 [ 838.631712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.631712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.631712][ T72] netlink_rcv_skb+0x130/0x360 [ 838.631712][ T72] netlink_unicast+0x449/0x710 [ 838.631712][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.631712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.631712][ T72] ___sys_sendmsg+0xee/0x170 [ 838.631712][ T72] __sys_sendmsg+0xcd/0x170 [ 838.631712][ T72] do_syscall_64+0xc6/0x1e0 [ 838.631712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.631712][ T72] [ 838.633229][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 838.633229][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.633229][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.633229][ T72] ipv6_find_idev+0x102/0x170 [ 838.633229][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.633229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.633229][ T72] netlink_rcv_skb+0x130/0x360 [ 838.633229][ T72] netlink_unicast+0x449/0x710 [ 838.633229][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.633229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.633229][ T72] ___sys_sendmsg+0xee/0x170 [ 838.633229][ T72] __sys_sendmsg+0xcd/0x170 [ 838.633229][ T72] do_syscall_64+0xc6/0x1e0 [ 838.633229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.633229][ T72] [ 838.634924][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 838.635185][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 838.635185][ T72] netdev_get_by_index+0x5e/0x80 [ 838.635185][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.635185][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.635185][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.635185][ T72] ipv6_add_addr+0x411/0x2000 [ 838.635185][ T72] inet6_addr_add+0x30e/0xa40 [ 838.635185][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.635185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.635185][ T72] netlink_rcv_skb+0x130/0x360 [ 838.635185][ T72] netlink_unicast+0x449/0x710 [ 838.635185][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.635185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.635185][ T72] ___sys_sendmsg+0xee/0x170 [ 838.635185][ T72] __sys_sendmsg+0xcd/0x170 [ 838.635185][ T72] do_syscall_64+0xc6/0x1e0 [ 838.635185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.635185][ T72] [ 838.637271][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 838.637271][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.637271][ T72] ipv6_find_idev+0x102/0x170 [ 838.637271][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.637271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.637271][ T72] netlink_rcv_skb+0x130/0x360 [ 838.637271][ T72] netlink_unicast+0x449/0x710 [ 838.637271][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.637271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.637271][ T72] ___sys_sendmsg+0xee/0x170 [ 838.637271][ T72] __sys_sendmsg+0xcd/0x170 [ 838.637271][ T72] do_syscall_64+0xc6/0x1e0 [ 838.637271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.637271][ T72] [ 838.638962][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 838.638962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.638962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.638962][ T72] ipv6_find_idev+0x102/0x170 [ 838.638962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.638962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.638962][ T72] netlink_rcv_skb+0x130/0x360 [ 838.638962][ T72] netlink_unicast+0x449/0x710 [ 838.638962][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.638962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.638962][ T72] ___sys_sendmsg+0xee/0x170 [ 838.638962][ T72] __sys_sendmsg+0xcd/0x170 [ 838.638962][ T72] do_syscall_64+0xc6/0x1e0 [ 838.638962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.638962][ T72] [ 838.640889][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 838.641148][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 838.641148][ T72] netdev_get_by_index+0x5e/0x80 [ 838.641148][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.641148][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.641148][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.641148][ T72] ipv6_add_addr+0x411/0x2000 [ 838.641148][ T72] inet6_addr_add+0x30e/0xa40 [ 838.641148][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.641148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.641148][ T72] netlink_rcv_skb+0x130/0x360 [ 838.641148][ T72] netlink_unicast+0x449/0x710 [ 838.641148][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.641148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.641148][ T72] ___sys_sendmsg+0xee/0x170 [ 838.641148][ T72] __sys_sendmsg+0xcd/0x170 [ 838.641148][ T72] do_syscall_64+0xc6/0x1e0 [ 838.641148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.641148][ T72] [ 838.643354][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 838.643354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.643354][ T72] ipv6_find_idev+0x102/0x170 [ 838.643354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.643354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.643354][ T72] netlink_rcv_skb+0x130/0x360 [ 838.643354][ T72] netlink_unicast+0x449/0x710 [ 838.643354][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.643354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.643354][ T72] ___sys_sendmsg+0xee/0x170 [ 838.643354][ T72] __sys_sendmsg+0xcd/0x170 [ 838.643354][ T72] do_syscall_64+0xc6/0x1e0 [ 838.643354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.643354][ T72] [ 838.645045][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 838.645045][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.645045][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.645045][ T72] ipv6_find_idev+0x102/0x170 [ 838.645045][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.645045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.645045][ T72] netlink_rcv_skb+0x130/0x360 [ 838.645045][ T72] netlink_unicast+0x449/0x710 [ 838.645045][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.645045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.645045][ T72] ___sys_sendmsg+0xee/0x170 [ 838.645045][ T72] __sys_sendmsg+0xcd/0x170 [ 838.645045][ T72] do_syscall_64+0xc6/0x1e0 [ 838.645045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.645045][ T72] [ 838.646911][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 838.647176][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 838.647176][ T72] netdev_get_by_index+0x5e/0x80 [ 838.647176][ T72] fib6_nh_init+0x3d8/0x15b0 [ 838.647176][ T72] ip6_route_info_create+0xf18/0x17d0 [ 838.647176][ T72] addrconf_f6i_alloc+0x244/0x410 [ 838.647176][ T72] ipv6_add_addr+0x411/0x2000 [ 838.647176][ T72] inet6_addr_add+0x30e/0xa40 [ 838.647176][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 838.647176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.647176][ T72] netlink_rcv_skb+0x130/0x360 [ 838.647176][ T72] netlink_unicast+0x449/0x710 [ 838.647176][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.647176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.647176][ T72] ___sys_sendmsg+0xee/0x170 [ 838.647176][ T72] __sys_sendmsg+0xcd/0x170 [ 838.647176][ T72] do_syscall_64+0xc6/0x1e0 [ 838.647176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.647176][ T72] [ 838.649373][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 838.649373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 838.649373][ T72] ipv6_find_idev+0x102/0x170 [ 838.649373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.649373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.649373][ T72] netlink_rcv_skb+0x130/0x360 [ 838.649373][ T72] netlink_unicast+0x449/0x710 [ 838.649373][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.649373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.649373][ T72] ___sys_sendmsg+0xee/0x170 [ 838.649373][ T72] __sys_sendmsg+0xcd/0x170 [ 838.649373][ T72] do_syscall_64+0xc6/0x1e0 [ 838.649373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.649373][ T72] [ 838.651126][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 838.651126][ T72] neigh_parms_alloc+0x1e5/0x510 [ 838.651126][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 838.651126][ T72] ipv6_find_idev+0x102/0x170 [ 838.651126][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 838.651126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 838.651126][ T72] netlink_rcv_skb+0x130/0x360 [ 838.651126][ T72] netlink_unicast+0x449/0x710 [ 838.651126][ T72] netlink_sendmsg+0x723/0xbe0 [ 838.651126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 838.651126][ T72] ___sys_sendmsg+0xee/0x170 [ 838.651126][ T72] __sys_sendmsg+0xcd/0x170 [ 838.651126][ T72] do_syscall_64+0xc6/0x1e0 [ 838.651126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 838.651126][ T72] [ 848.702868][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 848.703536][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 848.703536][ T72] netdev_get_by_index+0x5e/0x80 [ 848.703536][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.703536][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.703536][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.703536][ T72] ipv6_add_addr+0x411/0x2000 [ 848.703536][ T72] inet6_addr_add+0x30e/0xa40 [ 848.703536][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.703536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.703536][ T72] netlink_rcv_skb+0x130/0x360 [ 848.703536][ T72] netlink_unicast+0x449/0x710 [ 848.703536][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.703536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.703536][ T72] ___sys_sendmsg+0xee/0x170 [ 848.703536][ T72] __sys_sendmsg+0xcd/0x170 [ 848.703536][ T72] do_syscall_64+0xc6/0x1e0 [ 848.703536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.703536][ T72] [ 848.706717][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 848.706717][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.706717][ T72] ipv6_find_idev+0x102/0x170 [ 848.706717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.706717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.706717][ T72] netlink_rcv_skb+0x130/0x360 [ 848.706717][ T72] netlink_unicast+0x449/0x710 [ 848.706717][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.706717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.706717][ T72] ___sys_sendmsg+0xee/0x170 [ 848.706717][ T72] __sys_sendmsg+0xcd/0x170 [ 848.706717][ T72] do_syscall_64+0xc6/0x1e0 [ 848.706717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.706717][ T72] [ 848.709092][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 848.709092][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.709092][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.709092][ T72] ipv6_find_idev+0x102/0x170 [ 848.709092][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.709092][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.709092][ T72] netlink_rcv_skb+0x130/0x360 [ 848.709092][ T72] netlink_unicast+0x449/0x710 [ 848.709092][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.709092][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.709092][ T72] ___sys_sendmsg+0xee/0x170 [ 848.709092][ T72] __sys_sendmsg+0xcd/0x170 [ 848.709092][ T72] do_syscall_64+0xc6/0x1e0 [ 848.709092][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.709092][ T72] [ 848.710915][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 848.711186][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 848.711186][ T72] netdev_get_by_index+0x5e/0x80 [ 848.711186][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.711186][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.711186][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.711186][ T72] ipv6_add_addr+0x411/0x2000 [ 848.711186][ T72] inet6_addr_add+0x30e/0xa40 [ 848.711186][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.711186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.711186][ T72] netlink_rcv_skb+0x130/0x360 [ 848.711186][ T72] netlink_unicast+0x449/0x710 [ 848.711186][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.711186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.711186][ T72] ___sys_sendmsg+0xee/0x170 [ 848.711186][ T72] __sys_sendmsg+0xcd/0x170 [ 848.711186][ T72] do_syscall_64+0xc6/0x1e0 [ 848.711186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.711186][ T72] [ 848.714242][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 848.714242][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.714242][ T72] ipv6_find_idev+0x102/0x170 [ 848.714242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.714242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.714242][ T72] netlink_rcv_skb+0x130/0x360 [ 848.714242][ T72] netlink_unicast+0x449/0x710 [ 848.714242][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.714242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.714242][ T72] ___sys_sendmsg+0xee/0x170 [ 848.714242][ T72] __sys_sendmsg+0xcd/0x170 [ 848.714242][ T72] do_syscall_64+0xc6/0x1e0 [ 848.714242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.714242][ T72] [ 848.716681][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 848.716681][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.716681][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.716681][ T72] ipv6_find_idev+0x102/0x170 [ 848.716681][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.716681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.716681][ T72] netlink_rcv_skb+0x130/0x360 [ 848.716681][ T72] netlink_unicast+0x449/0x710 [ 848.716681][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.716681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.716681][ T72] ___sys_sendmsg+0xee/0x170 [ 848.716681][ T72] __sys_sendmsg+0xcd/0x170 [ 848.716681][ T72] do_syscall_64+0xc6/0x1e0 [ 848.716681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.716681][ T72] [ 848.718707][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 848.718986][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 848.718986][ T72] netdev_get_by_index+0x5e/0x80 [ 848.718986][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.718986][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.718986][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.718986][ T72] ipv6_add_addr+0x411/0x2000 [ 848.718986][ T72] inet6_addr_add+0x30e/0xa40 [ 848.718986][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.718986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.718986][ T72] netlink_rcv_skb+0x130/0x360 [ 848.718986][ T72] netlink_unicast+0x449/0x710 [ 848.718986][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.718986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.718986][ T72] ___sys_sendmsg+0xee/0x170 [ 848.718986][ T72] __sys_sendmsg+0xcd/0x170 [ 848.718986][ T72] do_syscall_64+0xc6/0x1e0 [ 848.718986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.718986][ T72] [ 848.721684][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 848.721684][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.721684][ T72] ipv6_find_idev+0x102/0x170 [ 848.721684][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.721684][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.721684][ T72] netlink_rcv_skb+0x130/0x360 [ 848.721684][ T72] netlink_unicast+0x449/0x710 [ 848.721684][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.721684][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.721684][ T72] ___sys_sendmsg+0xee/0x170 [ 848.721684][ T72] __sys_sendmsg+0xcd/0x170 [ 848.721684][ T72] do_syscall_64+0xc6/0x1e0 [ 848.721684][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.721684][ T72] [ 848.724142][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 848.724142][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.724142][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.724142][ T72] ipv6_find_idev+0x102/0x170 [ 848.724142][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.724142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.724142][ T72] netlink_rcv_skb+0x130/0x360 [ 848.724142][ T72] netlink_unicast+0x449/0x710 [ 848.724142][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.724142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.724142][ T72] ___sys_sendmsg+0xee/0x170 [ 848.724142][ T72] __sys_sendmsg+0xcd/0x170 [ 848.724142][ T72] do_syscall_64+0xc6/0x1e0 [ 848.724142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.724142][ T72] [ 848.726435][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 848.726749][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 848.726749][ T72] netdev_get_by_index+0x5e/0x80 [ 848.726749][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.726749][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.726749][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.726749][ T72] ipv6_add_addr+0x411/0x2000 [ 848.726749][ T72] inet6_addr_add+0x30e/0xa40 [ 848.726749][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.726749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.726749][ T72] netlink_rcv_skb+0x130/0x360 [ 848.726749][ T72] netlink_unicast+0x449/0x710 [ 848.726749][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.726749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.726749][ T72] ___sys_sendmsg+0xee/0x170 [ 848.726749][ T72] __sys_sendmsg+0xcd/0x170 [ 848.726749][ T72] do_syscall_64+0xc6/0x1e0 [ 848.726749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.726749][ T72] [ 848.728755][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 848.728755][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.728755][ T72] ipv6_find_idev+0x102/0x170 [ 848.728755][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.728755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.728755][ T72] netlink_rcv_skb+0x130/0x360 [ 848.728755][ T72] netlink_unicast+0x449/0x710 [ 848.728755][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.728755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.728755][ T72] ___sys_sendmsg+0xee/0x170 [ 848.728755][ T72] __sys_sendmsg+0xcd/0x170 [ 848.728755][ T72] do_syscall_64+0xc6/0x1e0 [ 848.728755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.728755][ T72] [ 848.731002][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 848.731002][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.731002][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.731002][ T72] ipv6_find_idev+0x102/0x170 [ 848.731002][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.731002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.731002][ T72] netlink_rcv_skb+0x130/0x360 [ 848.731002][ T72] netlink_unicast+0x449/0x710 [ 848.731002][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.731002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.731002][ T72] ___sys_sendmsg+0xee/0x170 [ 848.731002][ T72] __sys_sendmsg+0xcd/0x170 [ 848.731002][ T72] do_syscall_64+0xc6/0x1e0 [ 848.731002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.731002][ T72] [ 848.733640][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 848.734147][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 848.734147][ T72] netdev_get_by_index+0x5e/0x80 [ 848.734147][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.734147][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.734147][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.734147][ T72] ipv6_add_addr+0x411/0x2000 [ 848.734147][ T72] inet6_addr_add+0x30e/0xa40 [ 848.734147][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.734147][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.734147][ T72] netlink_rcv_skb+0x130/0x360 [ 848.734147][ T72] netlink_unicast+0x449/0x710 [ 848.734147][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.734147][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.734147][ T72] ___sys_sendmsg+0xee/0x170 [ 848.734147][ T72] __sys_sendmsg+0xcd/0x170 [ 848.734147][ T72] do_syscall_64+0xc6/0x1e0 [ 848.734147][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.734147][ T72] [ 848.737200][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 848.737200][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.737200][ T72] ipv6_find_idev+0x102/0x170 [ 848.737200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.737200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.737200][ T72] netlink_rcv_skb+0x130/0x360 [ 848.737200][ T72] netlink_unicast+0x449/0x710 [ 848.737200][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.737200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.737200][ T72] ___sys_sendmsg+0xee/0x170 [ 848.737200][ T72] __sys_sendmsg+0xcd/0x170 [ 848.737200][ T72] do_syscall_64+0xc6/0x1e0 [ 848.737200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.737200][ T72] [ 848.739677][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 848.739677][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.739677][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.739677][ T72] ipv6_find_idev+0x102/0x170 [ 848.739677][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.739677][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.739677][ T72] netlink_rcv_skb+0x130/0x360 [ 848.739677][ T72] netlink_unicast+0x449/0x710 [ 848.739677][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.739677][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.739677][ T72] ___sys_sendmsg+0xee/0x170 [ 848.739677][ T72] __sys_sendmsg+0xcd/0x170 [ 848.739677][ T72] do_syscall_64+0xc6/0x1e0 [ 848.739677][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.739677][ T72] [ 848.742815][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 848.743221][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 848.743221][ T72] netdev_get_by_index+0x5e/0x80 [ 848.743221][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.743221][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.743221][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.743221][ T72] ipv6_add_addr+0x411/0x2000 [ 848.743221][ T72] inet6_addr_add+0x30e/0xa40 [ 848.743221][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.743221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.743221][ T72] netlink_rcv_skb+0x130/0x360 [ 848.743221][ T72] netlink_unicast+0x449/0x710 [ 848.743221][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.743221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.743221][ T72] ___sys_sendmsg+0xee/0x170 [ 848.743221][ T72] __sys_sendmsg+0xcd/0x170 [ 848.743221][ T72] do_syscall_64+0xc6/0x1e0 [ 848.743221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.743221][ T72] [ 848.746771][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 848.746771][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.746771][ T72] ipv6_find_idev+0x102/0x170 [ 848.746771][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.746771][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.746771][ T72] netlink_rcv_skb+0x130/0x360 [ 848.746771][ T72] netlink_unicast+0x449/0x710 [ 848.746771][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.746771][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.746771][ T72] ___sys_sendmsg+0xee/0x170 [ 848.746771][ T72] __sys_sendmsg+0xcd/0x170 [ 848.746771][ T72] do_syscall_64+0xc6/0x1e0 [ 848.746771][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.746771][ T72] [ 848.749557][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 848.749557][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.749557][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.749557][ T72] ipv6_find_idev+0x102/0x170 [ 848.749557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.749557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.749557][ T72] netlink_rcv_skb+0x130/0x360 [ 848.749557][ T72] netlink_unicast+0x449/0x710 [ 848.749557][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.749557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.749557][ T72] ___sys_sendmsg+0xee/0x170 [ 848.749557][ T72] __sys_sendmsg+0xcd/0x170 [ 848.749557][ T72] do_syscall_64+0xc6/0x1e0 [ 848.749557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.749557][ T72] [ 848.751827][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 848.752117][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 848.752117][ T72] netdev_get_by_index+0x5e/0x80 [ 848.752117][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.752117][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.752117][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.752117][ T72] ipv6_add_addr+0x411/0x2000 [ 848.752117][ T72] inet6_addr_add+0x30e/0xa40 [ 848.752117][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.752117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.752117][ T72] netlink_rcv_skb+0x130/0x360 [ 848.752117][ T72] netlink_unicast+0x449/0x710 [ 848.752117][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.752117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.752117][ T72] ___sys_sendmsg+0xee/0x170 [ 848.752117][ T72] __sys_sendmsg+0xcd/0x170 [ 848.752117][ T72] do_syscall_64+0xc6/0x1e0 [ 848.752117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.752117][ T72] [ 848.755290][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 848.755290][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.755290][ T72] ipv6_find_idev+0x102/0x170 [ 848.755290][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.755290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.755290][ T72] netlink_rcv_skb+0x130/0x360 [ 848.755290][ T72] netlink_unicast+0x449/0x710 [ 848.755290][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.755290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.755290][ T72] ___sys_sendmsg+0xee/0x170 [ 848.755290][ T72] __sys_sendmsg+0xcd/0x170 [ 848.755290][ T72] do_syscall_64+0xc6/0x1e0 [ 848.755290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.755290][ T72] [ 848.758178][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 848.758178][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.758178][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.758178][ T72] ipv6_find_idev+0x102/0x170 [ 848.758178][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.758178][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.758178][ T72] netlink_rcv_skb+0x130/0x360 [ 848.758178][ T72] netlink_unicast+0x449/0x710 [ 848.758178][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.758178][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.758178][ T72] ___sys_sendmsg+0xee/0x170 [ 848.758178][ T72] __sys_sendmsg+0xcd/0x170 [ 848.758178][ T72] do_syscall_64+0xc6/0x1e0 [ 848.758178][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.758178][ T72] [ 848.760292][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 848.760557][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 848.760557][ T72] netdev_get_by_index+0x5e/0x80 [ 848.760557][ T72] fib6_nh_init+0x3d8/0x15b0 [ 848.760557][ T72] ip6_route_info_create+0xf18/0x17d0 [ 848.760557][ T72] addrconf_f6i_alloc+0x244/0x410 [ 848.760557][ T72] ipv6_add_addr+0x411/0x2000 [ 848.760557][ T72] inet6_addr_add+0x30e/0xa40 [ 848.760557][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 848.760557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.760557][ T72] netlink_rcv_skb+0x130/0x360 [ 848.760557][ T72] netlink_unicast+0x449/0x710 [ 848.760557][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.760557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.760557][ T72] ___sys_sendmsg+0xee/0x170 [ 848.760557][ T72] __sys_sendmsg+0xcd/0x170 [ 848.760557][ T72] do_syscall_64+0xc6/0x1e0 [ 848.760557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.760557][ T72] [ 848.763751][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 848.763751][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 848.763751][ T72] ipv6_find_idev+0x102/0x170 [ 848.763751][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.763751][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.763751][ T72] netlink_rcv_skb+0x130/0x360 [ 848.763751][ T72] netlink_unicast+0x449/0x710 [ 848.763751][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.763751][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.763751][ T72] ___sys_sendmsg+0xee/0x170 [ 848.763751][ T72] __sys_sendmsg+0xcd/0x170 [ 848.763751][ T72] do_syscall_64+0xc6/0x1e0 [ 848.763751][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.763751][ T72] [ 848.766506][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 848.766506][ T72] neigh_parms_alloc+0x1e5/0x510 [ 848.766506][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 848.766506][ T72] ipv6_find_idev+0x102/0x170 [ 848.766506][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 848.766506][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 848.766506][ T72] netlink_rcv_skb+0x130/0x360 [ 848.766506][ T72] netlink_unicast+0x449/0x710 [ 848.766506][ T72] netlink_sendmsg+0x723/0xbe0 [ 848.766506][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 848.766506][ T72] ___sys_sendmsg+0xee/0x170 [ 848.766506][ T72] __sys_sendmsg+0xcd/0x170 [ 848.766506][ T72] do_syscall_64+0xc6/0x1e0 [ 848.766506][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 848.766506][ T72] [ 859.014820][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 859.015286][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 859.015286][ T72] netdev_get_by_index+0x5e/0x80 [ 859.015286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.015286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.015286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.015286][ T72] ipv6_add_addr+0x411/0x2000 [ 859.015286][ T72] inet6_addr_add+0x30e/0xa40 [ 859.015286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.015286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.015286][ T72] netlink_rcv_skb+0x130/0x360 [ 859.015286][ T72] netlink_unicast+0x449/0x710 [ 859.015286][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.015286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.015286][ T72] ___sys_sendmsg+0xee/0x170 [ 859.015286][ T72] __sys_sendmsg+0xcd/0x170 [ 859.015286][ T72] do_syscall_64+0xc6/0x1e0 [ 859.015286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.015286][ T72] [ 859.017811][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 859.017811][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.017811][ T72] ipv6_find_idev+0x102/0x170 [ 859.017811][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.017811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.017811][ T72] netlink_rcv_skb+0x130/0x360 [ 859.017811][ T72] netlink_unicast+0x449/0x710 [ 859.017811][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.017811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.017811][ T72] ___sys_sendmsg+0xee/0x170 [ 859.017811][ T72] __sys_sendmsg+0xcd/0x170 [ 859.017811][ T72] do_syscall_64+0xc6/0x1e0 [ 859.017811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.017811][ T72] [ 859.020268][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 859.020268][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.020268][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.020268][ T72] ipv6_find_idev+0x102/0x170 [ 859.020268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.020268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.020268][ T72] netlink_rcv_skb+0x130/0x360 [ 859.020268][ T72] netlink_unicast+0x449/0x710 [ 859.020268][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.020268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.020268][ T72] ___sys_sendmsg+0xee/0x170 [ 859.020268][ T72] __sys_sendmsg+0xcd/0x170 [ 859.020268][ T72] do_syscall_64+0xc6/0x1e0 [ 859.020268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.020268][ T72] [ 859.022198][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 859.022474][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 859.022474][ T72] netdev_get_by_index+0x5e/0x80 [ 859.022474][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.022474][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.022474][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.022474][ T72] ipv6_add_addr+0x411/0x2000 [ 859.022474][ T72] inet6_addr_add+0x30e/0xa40 [ 859.022474][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.022474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.022474][ T72] netlink_rcv_skb+0x130/0x360 [ 859.022474][ T72] netlink_unicast+0x449/0x710 [ 859.022474][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.022474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.022474][ T72] ___sys_sendmsg+0xee/0x170 [ 859.022474][ T72] __sys_sendmsg+0xcd/0x170 [ 859.022474][ T72] do_syscall_64+0xc6/0x1e0 [ 859.022474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.022474][ T72] [ 859.024590][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 859.024590][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.024590][ T72] ipv6_find_idev+0x102/0x170 [ 859.024590][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.024590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.024590][ T72] netlink_rcv_skb+0x130/0x360 [ 859.024590][ T72] netlink_unicast+0x449/0x710 [ 859.024590][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.024590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.024590][ T72] ___sys_sendmsg+0xee/0x170 [ 859.024590][ T72] __sys_sendmsg+0xcd/0x170 [ 859.024590][ T72] do_syscall_64+0xc6/0x1e0 [ 859.024590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.024590][ T72] [ 859.026126][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 859.026126][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.026126][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.026126][ T72] ipv6_find_idev+0x102/0x170 [ 859.026126][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.026126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.026126][ T72] netlink_rcv_skb+0x130/0x360 [ 859.026126][ T72] netlink_unicast+0x449/0x710 [ 859.026126][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.026126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.026126][ T72] ___sys_sendmsg+0xee/0x170 [ 859.026126][ T72] __sys_sendmsg+0xcd/0x170 [ 859.026126][ T72] do_syscall_64+0xc6/0x1e0 [ 859.026126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.026126][ T72] [ 859.028215][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 859.028485][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 859.028485][ T72] netdev_get_by_index+0x5e/0x80 [ 859.028485][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.028485][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.028485][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.028485][ T72] ipv6_add_addr+0x411/0x2000 [ 859.028485][ T72] inet6_addr_add+0x30e/0xa40 [ 859.028485][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.028485][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.028485][ T72] netlink_rcv_skb+0x130/0x360 [ 859.028485][ T72] netlink_unicast+0x449/0x710 [ 859.028485][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.028485][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.028485][ T72] ___sys_sendmsg+0xee/0x170 [ 859.028485][ T72] __sys_sendmsg+0xcd/0x170 [ 859.028485][ T72] do_syscall_64+0xc6/0x1e0 [ 859.028485][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.028485][ T72] [ 859.030485][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 859.030485][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.030485][ T72] ipv6_find_idev+0x102/0x170 [ 859.030485][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.030485][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.030485][ T72] netlink_rcv_skb+0x130/0x360 [ 859.030485][ T72] netlink_unicast+0x449/0x710 [ 859.030485][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.030485][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.030485][ T72] ___sys_sendmsg+0xee/0x170 [ 859.030485][ T72] __sys_sendmsg+0xcd/0x170 [ 859.030485][ T72] do_syscall_64+0xc6/0x1e0 [ 859.030485][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.030485][ T72] [ 859.032013][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 859.032013][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.032013][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.032013][ T72] ipv6_find_idev+0x102/0x170 [ 859.032013][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.032013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.032013][ T72] netlink_rcv_skb+0x130/0x360 [ 859.032013][ T72] netlink_unicast+0x449/0x710 [ 859.032013][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.032013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.032013][ T72] ___sys_sendmsg+0xee/0x170 [ 859.032013][ T72] __sys_sendmsg+0xcd/0x170 [ 859.032013][ T72] do_syscall_64+0xc6/0x1e0 [ 859.032013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.032013][ T72] [ 859.033683][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 859.034381][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 859.034381][ T72] netdev_get_by_index+0x5e/0x80 [ 859.034381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.034381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.034381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.034381][ T72] ipv6_add_addr+0x411/0x2000 [ 859.034381][ T72] inet6_addr_add+0x30e/0xa40 [ 859.034381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.034381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.034381][ T72] netlink_rcv_skb+0x130/0x360 [ 859.034381][ T72] netlink_unicast+0x449/0x710 [ 859.034381][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.034381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.034381][ T72] ___sys_sendmsg+0xee/0x170 [ 859.034381][ T72] __sys_sendmsg+0xcd/0x170 [ 859.034381][ T72] do_syscall_64+0xc6/0x1e0 [ 859.034381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.034381][ T72] [ 859.036390][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 859.036390][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.036390][ T72] ipv6_find_idev+0x102/0x170 [ 859.036390][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.036390][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.036390][ T72] netlink_rcv_skb+0x130/0x360 [ 859.036390][ T72] netlink_unicast+0x449/0x710 [ 859.036390][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.036390][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.036390][ T72] ___sys_sendmsg+0xee/0x170 [ 859.036390][ T72] __sys_sendmsg+0xcd/0x170 [ 859.036390][ T72] do_syscall_64+0xc6/0x1e0 [ 859.036390][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.036390][ T72] [ 859.037934][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 859.037934][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.037934][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.037934][ T72] ipv6_find_idev+0x102/0x170 [ 859.037934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.037934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.037934][ T72] netlink_rcv_skb+0x130/0x360 [ 859.037934][ T72] netlink_unicast+0x449/0x710 [ 859.037934][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.037934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.037934][ T72] ___sys_sendmsg+0xee/0x170 [ 859.037934][ T72] __sys_sendmsg+0xcd/0x170 [ 859.037934][ T72] do_syscall_64+0xc6/0x1e0 [ 859.037934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.037934][ T72] [ 859.039631][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 859.039948][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 859.039948][ T72] netdev_get_by_index+0x5e/0x80 [ 859.039948][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.039948][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.039948][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.039948][ T72] ipv6_add_addr+0x411/0x2000 [ 859.039948][ T72] inet6_addr_add+0x30e/0xa40 [ 859.039948][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.039948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.039948][ T72] netlink_rcv_skb+0x130/0x360 [ 859.039948][ T72] netlink_unicast+0x449/0x710 [ 859.039948][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.039948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.039948][ T72] ___sys_sendmsg+0xee/0x170 [ 859.039948][ T72] __sys_sendmsg+0xcd/0x170 [ 859.039948][ T72] do_syscall_64+0xc6/0x1e0 [ 859.039948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.039948][ T72] [ 859.041953][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 859.041953][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.041953][ T72] ipv6_find_idev+0x102/0x170 [ 859.041953][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.041953][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.041953][ T72] netlink_rcv_skb+0x130/0x360 [ 859.041953][ T72] netlink_unicast+0x449/0x710 [ 859.041953][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.041953][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.041953][ T72] ___sys_sendmsg+0xee/0x170 [ 859.041953][ T72] __sys_sendmsg+0xcd/0x170 [ 859.041953][ T72] do_syscall_64+0xc6/0x1e0 [ 859.041953][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.041953][ T72] [ 859.043479][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 859.043479][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.043479][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.043479][ T72] ipv6_find_idev+0x102/0x170 [ 859.043479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.043479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.043479][ T72] netlink_rcv_skb+0x130/0x360 [ 859.043479][ T72] netlink_unicast+0x449/0x710 [ 859.043479][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.043479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.043479][ T72] ___sys_sendmsg+0xee/0x170 [ 859.043479][ T72] __sys_sendmsg+0xcd/0x170 [ 859.043479][ T72] do_syscall_64+0xc6/0x1e0 [ 859.043479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.043479][ T72] [ 859.045185][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 859.045452][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 859.045452][ T72] netdev_get_by_index+0x5e/0x80 [ 859.045452][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.045452][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.045452][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.045452][ T72] ipv6_add_addr+0x411/0x2000 [ 859.045452][ T72] inet6_addr_add+0x30e/0xa40 [ 859.045452][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.045452][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.045452][ T72] netlink_rcv_skb+0x130/0x360 [ 859.045452][ T72] netlink_unicast+0x449/0x710 [ 859.045452][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.045452][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.045452][ T72] ___sys_sendmsg+0xee/0x170 [ 859.045452][ T72] __sys_sendmsg+0xcd/0x170 [ 859.045452][ T72] do_syscall_64+0xc6/0x1e0 [ 859.045452][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.045452][ T72] [ 859.047440][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 859.047440][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.047440][ T72] ipv6_find_idev+0x102/0x170 [ 859.047440][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.047440][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.047440][ T72] netlink_rcv_skb+0x130/0x360 [ 859.047440][ T72] netlink_unicast+0x449/0x710 [ 859.047440][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.047440][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.047440][ T72] ___sys_sendmsg+0xee/0x170 [ 859.047440][ T72] __sys_sendmsg+0xcd/0x170 [ 859.047440][ T72] do_syscall_64+0xc6/0x1e0 [ 859.047440][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.047440][ T72] [ 859.049192][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 859.049192][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.049192][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.049192][ T72] ipv6_find_idev+0x102/0x170 [ 859.049192][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.049192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.049192][ T72] netlink_rcv_skb+0x130/0x360 [ 859.049192][ T72] netlink_unicast+0x449/0x710 [ 859.049192][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.049192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.049192][ T72] ___sys_sendmsg+0xee/0x170 [ 859.049192][ T72] __sys_sendmsg+0xcd/0x170 [ 859.049192][ T72] do_syscall_64+0xc6/0x1e0 [ 859.049192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.049192][ T72] [ 859.051148][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 859.051412][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 859.051412][ T72] netdev_get_by_index+0x5e/0x80 [ 859.051412][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.051412][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.051412][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.051412][ T72] ipv6_add_addr+0x411/0x2000 [ 859.051412][ T72] inet6_addr_add+0x30e/0xa40 [ 859.051412][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.051412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.051412][ T72] netlink_rcv_skb+0x130/0x360 [ 859.051412][ T72] netlink_unicast+0x449/0x710 [ 859.051412][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.051412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.051412][ T72] ___sys_sendmsg+0xee/0x170 [ 859.051412][ T72] __sys_sendmsg+0xcd/0x170 [ 859.051412][ T72] do_syscall_64+0xc6/0x1e0 [ 859.051412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.051412][ T72] [ 859.053548][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 859.053548][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.053548][ T72] ipv6_find_idev+0x102/0x170 [ 859.053548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.053548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.053548][ T72] netlink_rcv_skb+0x130/0x360 [ 859.053548][ T72] netlink_unicast+0x449/0x710 [ 859.053548][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.053548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.053548][ T72] ___sys_sendmsg+0xee/0x170 [ 859.053548][ T72] __sys_sendmsg+0xcd/0x170 [ 859.053548][ T72] do_syscall_64+0xc6/0x1e0 [ 859.053548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.053548][ T72] [ 859.055253][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 859.055253][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.055253][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.055253][ T72] ipv6_find_idev+0x102/0x170 [ 859.055253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.055253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.055253][ T72] netlink_rcv_skb+0x130/0x360 [ 859.055253][ T72] netlink_unicast+0x449/0x710 [ 859.055253][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.055253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.055253][ T72] ___sys_sendmsg+0xee/0x170 [ 859.055253][ T72] __sys_sendmsg+0xcd/0x170 [ 859.055253][ T72] do_syscall_64+0xc6/0x1e0 [ 859.055253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.055253][ T72] [ 859.057136][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 859.057412][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 859.057412][ T72] netdev_get_by_index+0x5e/0x80 [ 859.057412][ T72] fib6_nh_init+0x3d8/0x15b0 [ 859.057412][ T72] ip6_route_info_create+0xf18/0x17d0 [ 859.057412][ T72] addrconf_f6i_alloc+0x244/0x410 [ 859.057412][ T72] ipv6_add_addr+0x411/0x2000 [ 859.057412][ T72] inet6_addr_add+0x30e/0xa40 [ 859.057412][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 859.057412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.057412][ T72] netlink_rcv_skb+0x130/0x360 [ 859.057412][ T72] netlink_unicast+0x449/0x710 [ 859.057412][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.057412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.057412][ T72] ___sys_sendmsg+0xee/0x170 [ 859.057412][ T72] __sys_sendmsg+0xcd/0x170 [ 859.057412][ T72] do_syscall_64+0xc6/0x1e0 [ 859.057412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.057412][ T72] [ 859.059687][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 859.059687][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 859.059687][ T72] ipv6_find_idev+0x102/0x170 [ 859.059687][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.059687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.059687][ T72] netlink_rcv_skb+0x130/0x360 [ 859.059687][ T72] netlink_unicast+0x449/0x710 [ 859.059687][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.059687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.059687][ T72] ___sys_sendmsg+0xee/0x170 [ 859.059687][ T72] __sys_sendmsg+0xcd/0x170 [ 859.059687][ T72] do_syscall_64+0xc6/0x1e0 [ 859.059687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.059687][ T72] [ 859.061373][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 859.061373][ T72] neigh_parms_alloc+0x1e5/0x510 [ 859.061373][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 859.061373][ T72] ipv6_find_idev+0x102/0x170 [ 859.061373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 859.061373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 859.061373][ T72] netlink_rcv_skb+0x130/0x360 [ 859.061373][ T72] netlink_unicast+0x449/0x710 [ 859.061373][ T72] netlink_sendmsg+0x723/0xbe0 [ 859.061373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 859.061373][ T72] ___sys_sendmsg+0xee/0x170 [ 859.061373][ T72] __sys_sendmsg+0xcd/0x170 [ 859.061373][ T72] do_syscall_64+0xc6/0x1e0 [ 859.061373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 859.061373][ T72] [ 861.478904][ T42] INFO: task modprobe:1060 blocked for more than 614 seconds. [ 861.479334][ T42] Not tainted 6.8.0-virtme #1 [ 861.479459][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 861.479664][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 861.479967][ T42] Call Trace: [ 861.480068][ T42] [ 861.480147][ T42] __schedule+0x705/0x1ac0 [ 861.480287][ T42] ? __pfx___schedule+0x10/0x10 [ 861.480414][ T42] ? schedule+0x1a5/0x210 [ 861.480514][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 861.480646][ T42] ? mark_lock+0x38/0x3e0 [ 861.480761][ T42] ? do_raw_spin_lock+0x131/0x270 [ 861.480892][ T42] ? schedule+0x1a5/0x210 [ 861.480994][ T42] schedule+0xdf/0x210 [ 861.481091][ T42] schedule_preempt_disabled+0x15/0x30 [ 861.481223][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 861.481357][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 861.481513][ T42] ? kasan_save_stack+0x34/0x50 [ 861.481644][ T42] ? kasan_save_stack+0x24/0x50 [ 861.481865][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 861.482004][ T42] ? lock_acquire+0x1c1/0x220 [ 861.482130][ T42] ? register_pernet_subsys+0x1a/0x50 [ 861.482265][ T42] down_write+0x1c9/0x200 [ 861.482368][ T42] ? __pfx_down_write+0x10/0x10 [ 861.482496][ T42] ? __pfx___lock_release+0x10/0x10 [ 861.482627][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 861.482828][ T42] register_pernet_subsys+0x1a/0x50 [ 861.482959][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 861.483138][ T42] do_one_initcall+0xc8/0x3f0 [ 861.483267][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 861.483403][ T42] ? __create_object+0x5e/0xb0 [ 861.483535][ T42] ? kasan_unpoison+0x27/0x60 [ 861.483668][ T42] do_init_module+0x233/0x740 [ 861.483828][ T42] load_module+0x16b5/0x2350 [ 861.483974][ T42] ? __pfx_load_module+0x10/0x10 [ 861.484101][ T42] ? kernel_read_file+0x3d2/0x520 [ 861.484240][ T42] ? kernel_read_file+0x300/0x520 [ 861.484370][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 861.484504][ T42] ? init_module_from_file+0xd2/0x130 [ 861.484632][ T42] init_module_from_file+0xd2/0x130 [ 861.484770][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 861.484926][ T42] ? __lock_release+0x103/0x460 [ 861.485055][ T42] ? idempotent_init_module+0x32a/0x620 [ 861.485199][ T42] ? idempotent_init_module+0x32a/0x620 [ 861.485327][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 861.485457][ T42] idempotent_init_module+0x342/0x620 [ 861.485588][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 861.485771][ T42] __x64_sys_finit_module+0xbe/0x130 [ 861.485906][ T42] do_syscall_64+0xc6/0x1e0 [ 861.486035][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 861.486192][ T42] RIP: 0033:0x7f69f7397e5d [ 861.486323][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 861.486514][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 861.486704][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 861.486906][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 861.487095][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 861.487278][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 861.487481][ T42] [ 861.487579][ T42] [ 861.487579][ T42] Showing all locks held in the system: [ 861.487781][ T42] 1 lock held by khungtaskd/42: [ 861.487912][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 861.488140][ T42] 2 locks held by kworker/u20:1/60: [ 861.488260][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 861.488515][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 861.488810][ T42] 3 locks held by kworker/u16:1/72: [ 861.488930][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 861.489183][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 861.489402][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 861.489626][ T42] 1 lock held by modprobe/1060: [ 861.489757][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 861.490020][ T42] [ 861.490083][ T42] ============================================= [ 861.490083][ T42] [ 869.302925][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 869.303448][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 869.303448][ T72] netdev_get_by_index+0x5e/0x80 [ 869.303448][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.303448][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.303448][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.303448][ T72] ipv6_add_addr+0x411/0x2000 [ 869.303448][ T72] inet6_addr_add+0x30e/0xa40 [ 869.303448][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.303448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.303448][ T72] netlink_rcv_skb+0x130/0x360 [ 869.303448][ T72] netlink_unicast+0x449/0x710 [ 869.303448][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.303448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.303448][ T72] ___sys_sendmsg+0xee/0x170 [ 869.303448][ T72] __sys_sendmsg+0xcd/0x170 [ 869.303448][ T72] do_syscall_64+0xc6/0x1e0 [ 869.303448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.303448][ T72] [ 869.305463][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 869.305463][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.305463][ T72] ipv6_find_idev+0x102/0x170 [ 869.305463][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.305463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.305463][ T72] netlink_rcv_skb+0x130/0x360 [ 869.305463][ T72] netlink_unicast+0x449/0x710 [ 869.305463][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.305463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.305463][ T72] ___sys_sendmsg+0xee/0x170 [ 869.305463][ T72] __sys_sendmsg+0xcd/0x170 [ 869.305463][ T72] do_syscall_64+0xc6/0x1e0 [ 869.305463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.305463][ T72] [ 869.307020][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 869.307020][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.307020][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.307020][ T72] ipv6_find_idev+0x102/0x170 [ 869.307020][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.307020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.307020][ T72] netlink_rcv_skb+0x130/0x360 [ 869.307020][ T72] netlink_unicast+0x449/0x710 [ 869.307020][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.307020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.307020][ T72] ___sys_sendmsg+0xee/0x170 [ 869.307020][ T72] __sys_sendmsg+0xcd/0x170 [ 869.307020][ T72] do_syscall_64+0xc6/0x1e0 [ 869.307020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.307020][ T72] [ 869.308829][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 869.309102][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 869.309102][ T72] netdev_get_by_index+0x5e/0x80 [ 869.309102][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.309102][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.309102][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.309102][ T72] ipv6_add_addr+0x411/0x2000 [ 869.309102][ T72] inet6_addr_add+0x30e/0xa40 [ 869.309102][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.309102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.309102][ T72] netlink_rcv_skb+0x130/0x360 [ 869.309102][ T72] netlink_unicast+0x449/0x710 [ 869.309102][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.309102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.309102][ T72] ___sys_sendmsg+0xee/0x170 [ 869.309102][ T72] __sys_sendmsg+0xcd/0x170 [ 869.309102][ T72] do_syscall_64+0xc6/0x1e0 [ 869.309102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.309102][ T72] [ 869.311083][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 869.311083][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.311083][ T72] ipv6_find_idev+0x102/0x170 [ 869.311083][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.311083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.311083][ T72] netlink_rcv_skb+0x130/0x360 [ 869.311083][ T72] netlink_unicast+0x449/0x710 [ 869.311083][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.311083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.311083][ T72] ___sys_sendmsg+0xee/0x170 [ 869.311083][ T72] __sys_sendmsg+0xcd/0x170 [ 869.311083][ T72] do_syscall_64+0xc6/0x1e0 [ 869.311083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.311083][ T72] [ 869.312615][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 869.312615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.312615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.312615][ T72] ipv6_find_idev+0x102/0x170 [ 869.312615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.312615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.312615][ T72] netlink_rcv_skb+0x130/0x360 [ 869.312615][ T72] netlink_unicast+0x449/0x710 [ 869.312615][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.312615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.312615][ T72] ___sys_sendmsg+0xee/0x170 [ 869.312615][ T72] __sys_sendmsg+0xcd/0x170 [ 869.312615][ T72] do_syscall_64+0xc6/0x1e0 [ 869.312615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.312615][ T72] [ 869.314296][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 869.314563][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 869.314563][ T72] netdev_get_by_index+0x5e/0x80 [ 869.314563][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.314563][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.314563][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.314563][ T72] ipv6_add_addr+0x411/0x2000 [ 869.314563][ T72] inet6_addr_add+0x30e/0xa40 [ 869.314563][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.314563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.314563][ T72] netlink_rcv_skb+0x130/0x360 [ 869.314563][ T72] netlink_unicast+0x449/0x710 [ 869.314563][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.314563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.314563][ T72] ___sys_sendmsg+0xee/0x170 [ 869.314563][ T72] __sys_sendmsg+0xcd/0x170 [ 869.314563][ T72] do_syscall_64+0xc6/0x1e0 [ 869.314563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.314563][ T72] [ 869.316545][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 869.316545][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.316545][ T72] ipv6_find_idev+0x102/0x170 [ 869.316545][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.316545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.316545][ T72] netlink_rcv_skb+0x130/0x360 [ 869.316545][ T72] netlink_unicast+0x449/0x710 [ 869.316545][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.316545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.316545][ T72] ___sys_sendmsg+0xee/0x170 [ 869.316545][ T72] __sys_sendmsg+0xcd/0x170 [ 869.316545][ T72] do_syscall_64+0xc6/0x1e0 [ 869.316545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.316545][ T72] [ 869.318088][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 869.318088][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.318088][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.318088][ T72] ipv6_find_idev+0x102/0x170 [ 869.318088][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.318088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.318088][ T72] netlink_rcv_skb+0x130/0x360 [ 869.318088][ T72] netlink_unicast+0x449/0x710 [ 869.318088][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.318088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.318088][ T72] ___sys_sendmsg+0xee/0x170 [ 869.318088][ T72] __sys_sendmsg+0xcd/0x170 [ 869.318088][ T72] do_syscall_64+0xc6/0x1e0 [ 869.318088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.318088][ T72] [ 869.319766][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 869.320033][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 869.320033][ T72] netdev_get_by_index+0x5e/0x80 [ 869.320033][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.320033][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.320033][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.320033][ T72] ipv6_add_addr+0x411/0x2000 [ 869.320033][ T72] inet6_addr_add+0x30e/0xa40 [ 869.320033][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.320033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.320033][ T72] netlink_rcv_skb+0x130/0x360 [ 869.320033][ T72] netlink_unicast+0x449/0x710 [ 869.320033][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.320033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.320033][ T72] ___sys_sendmsg+0xee/0x170 [ 869.320033][ T72] __sys_sendmsg+0xcd/0x170 [ 869.320033][ T72] do_syscall_64+0xc6/0x1e0 [ 869.320033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.320033][ T72] [ 869.322014][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 869.322014][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.322014][ T72] ipv6_find_idev+0x102/0x170 [ 869.322014][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.322014][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.322014][ T72] netlink_rcv_skb+0x130/0x360 [ 869.322014][ T72] netlink_unicast+0x449/0x710 [ 869.322014][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.322014][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.322014][ T72] ___sys_sendmsg+0xee/0x170 [ 869.322014][ T72] __sys_sendmsg+0xcd/0x170 [ 869.322014][ T72] do_syscall_64+0xc6/0x1e0 [ 869.322014][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.322014][ T72] [ 869.323552][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 869.323552][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.323552][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.323552][ T72] ipv6_find_idev+0x102/0x170 [ 869.323552][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.323552][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.323552][ T72] netlink_rcv_skb+0x130/0x360 [ 869.323552][ T72] netlink_unicast+0x449/0x710 [ 869.323552][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.323552][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.323552][ T72] ___sys_sendmsg+0xee/0x170 [ 869.323552][ T72] __sys_sendmsg+0xcd/0x170 [ 869.323552][ T72] do_syscall_64+0xc6/0x1e0 [ 869.323552][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.323552][ T72] [ 869.325636][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 869.326238][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 869.326238][ T72] netdev_get_by_index+0x5e/0x80 [ 869.326238][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.326238][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.326238][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.326238][ T72] ipv6_add_addr+0x411/0x2000 [ 869.326238][ T72] inet6_addr_add+0x30e/0xa40 [ 869.326238][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.326238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.326238][ T72] netlink_rcv_skb+0x130/0x360 [ 869.326238][ T72] netlink_unicast+0x449/0x710 [ 869.326238][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.326238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.326238][ T72] ___sys_sendmsg+0xee/0x170 [ 869.326238][ T72] __sys_sendmsg+0xcd/0x170 [ 869.326238][ T72] do_syscall_64+0xc6/0x1e0 [ 869.326238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.326238][ T72] [ 869.328234][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 869.328234][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.328234][ T72] ipv6_find_idev+0x102/0x170 [ 869.328234][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.328234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.328234][ T72] netlink_rcv_skb+0x130/0x360 [ 869.328234][ T72] netlink_unicast+0x449/0x710 [ 869.328234][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.328234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.328234][ T72] ___sys_sendmsg+0xee/0x170 [ 869.328234][ T72] __sys_sendmsg+0xcd/0x170 [ 869.328234][ T72] do_syscall_64+0xc6/0x1e0 [ 869.328234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.328234][ T72] [ 869.329762][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 869.329762][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.329762][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.329762][ T72] ipv6_find_idev+0x102/0x170 [ 869.329762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.329762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.329762][ T72] netlink_rcv_skb+0x130/0x360 [ 869.329762][ T72] netlink_unicast+0x449/0x710 [ 869.329762][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.329762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.329762][ T72] ___sys_sendmsg+0xee/0x170 [ 869.329762][ T72] __sys_sendmsg+0xcd/0x170 [ 869.329762][ T72] do_syscall_64+0xc6/0x1e0 [ 869.329762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.329762][ T72] [ 869.331436][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 869.331702][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 869.331702][ T72] netdev_get_by_index+0x5e/0x80 [ 869.331702][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.331702][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.331702][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.331702][ T72] ipv6_add_addr+0x411/0x2000 [ 869.331702][ T72] inet6_addr_add+0x30e/0xa40 [ 869.331702][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.331702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.331702][ T72] netlink_rcv_skb+0x130/0x360 [ 869.331702][ T72] netlink_unicast+0x449/0x710 [ 869.331702][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.331702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.331702][ T72] ___sys_sendmsg+0xee/0x170 [ 869.331702][ T72] __sys_sendmsg+0xcd/0x170 [ 869.331702][ T72] do_syscall_64+0xc6/0x1e0 [ 869.331702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.331702][ T72] [ 869.333696][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 869.333696][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.333696][ T72] ipv6_find_idev+0x102/0x170 [ 869.333696][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.333696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.333696][ T72] netlink_rcv_skb+0x130/0x360 [ 869.333696][ T72] netlink_unicast+0x449/0x710 [ 869.333696][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.333696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.333696][ T72] ___sys_sendmsg+0xee/0x170 [ 869.333696][ T72] __sys_sendmsg+0xcd/0x170 [ 869.333696][ T72] do_syscall_64+0xc6/0x1e0 [ 869.333696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.333696][ T72] [ 869.335287][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 869.335287][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.335287][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.335287][ T72] ipv6_find_idev+0x102/0x170 [ 869.335287][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.335287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.335287][ T72] netlink_rcv_skb+0x130/0x360 [ 869.335287][ T72] netlink_unicast+0x449/0x710 [ 869.335287][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.335287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.335287][ T72] ___sys_sendmsg+0xee/0x170 [ 869.335287][ T72] __sys_sendmsg+0xcd/0x170 [ 869.335287][ T72] do_syscall_64+0xc6/0x1e0 [ 869.335287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.335287][ T72] [ 869.337184][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 869.337489][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 869.337489][ T72] netdev_get_by_index+0x5e/0x80 [ 869.337489][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.337489][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.337489][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.337489][ T72] ipv6_add_addr+0x411/0x2000 [ 869.337489][ T72] inet6_addr_add+0x30e/0xa40 [ 869.337489][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.337489][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.337489][ T72] netlink_rcv_skb+0x130/0x360 [ 869.337489][ T72] netlink_unicast+0x449/0x710 [ 869.337489][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.337489][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.337489][ T72] ___sys_sendmsg+0xee/0x170 [ 869.337489][ T72] __sys_sendmsg+0xcd/0x170 [ 869.337489][ T72] do_syscall_64+0xc6/0x1e0 [ 869.337489][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.337489][ T72] [ 869.339712][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 869.339712][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.339712][ T72] ipv6_find_idev+0x102/0x170 [ 869.339712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.339712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.339712][ T72] netlink_rcv_skb+0x130/0x360 [ 869.339712][ T72] netlink_unicast+0x449/0x710 [ 869.339712][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.339712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.339712][ T72] ___sys_sendmsg+0xee/0x170 [ 869.339712][ T72] __sys_sendmsg+0xcd/0x170 [ 869.339712][ T72] do_syscall_64+0xc6/0x1e0 [ 869.339712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.339712][ T72] [ 869.341416][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 869.341416][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.341416][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.341416][ T72] ipv6_find_idev+0x102/0x170 [ 869.341416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.341416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.341416][ T72] netlink_rcv_skb+0x130/0x360 [ 869.341416][ T72] netlink_unicast+0x449/0x710 [ 869.341416][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.341416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.341416][ T72] ___sys_sendmsg+0xee/0x170 [ 869.341416][ T72] __sys_sendmsg+0xcd/0x170 [ 869.341416][ T72] do_syscall_64+0xc6/0x1e0 [ 869.341416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.341416][ T72] [ 869.343370][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 869.343679][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 869.343679][ T72] netdev_get_by_index+0x5e/0x80 [ 869.343679][ T72] fib6_nh_init+0x3d8/0x15b0 [ 869.343679][ T72] ip6_route_info_create+0xf18/0x17d0 [ 869.343679][ T72] addrconf_f6i_alloc+0x244/0x410 [ 869.343679][ T72] ipv6_add_addr+0x411/0x2000 [ 869.343679][ T72] inet6_addr_add+0x30e/0xa40 [ 869.343679][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 869.343679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.343679][ T72] netlink_rcv_skb+0x130/0x360 [ 869.343679][ T72] netlink_unicast+0x449/0x710 [ 869.343679][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.343679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.343679][ T72] ___sys_sendmsg+0xee/0x170 [ 869.343679][ T72] __sys_sendmsg+0xcd/0x170 [ 869.343679][ T72] do_syscall_64+0xc6/0x1e0 [ 869.343679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.343679][ T72] [ 869.345839][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 869.345839][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 869.345839][ T72] ipv6_find_idev+0x102/0x170 [ 869.345839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.345839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.345839][ T72] netlink_rcv_skb+0x130/0x360 [ 869.345839][ T72] netlink_unicast+0x449/0x710 [ 869.345839][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.345839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.345839][ T72] ___sys_sendmsg+0xee/0x170 [ 869.345839][ T72] __sys_sendmsg+0xcd/0x170 [ 869.345839][ T72] do_syscall_64+0xc6/0x1e0 [ 869.345839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.345839][ T72] [ 869.347550][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 869.347550][ T72] neigh_parms_alloc+0x1e5/0x510 [ 869.347550][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 869.347550][ T72] ipv6_find_idev+0x102/0x170 [ 869.347550][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 869.347550][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 869.347550][ T72] netlink_rcv_skb+0x130/0x360 [ 869.347550][ T72] netlink_unicast+0x449/0x710 [ 869.347550][ T72] netlink_sendmsg+0x723/0xbe0 [ 869.347550][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 869.347550][ T72] ___sys_sendmsg+0xee/0x170 [ 869.347550][ T72] __sys_sendmsg+0xcd/0x170 [ 869.347550][ T72] do_syscall_64+0xc6/0x1e0 [ 869.347550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 869.347550][ T72] [ 879.590927][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 879.591425][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 879.591425][ T72] netdev_get_by_index+0x5e/0x80 [ 879.591425][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.591425][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.591425][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.591425][ T72] ipv6_add_addr+0x411/0x2000 [ 879.591425][ T72] inet6_addr_add+0x30e/0xa40 [ 879.591425][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.591425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.591425][ T72] netlink_rcv_skb+0x130/0x360 [ 879.591425][ T72] netlink_unicast+0x449/0x710 [ 879.591425][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.591425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.591425][ T72] ___sys_sendmsg+0xee/0x170 [ 879.591425][ T72] __sys_sendmsg+0xcd/0x170 [ 879.591425][ T72] do_syscall_64+0xc6/0x1e0 [ 879.591425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.591425][ T72] [ 879.593451][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 879.593451][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.593451][ T72] ipv6_find_idev+0x102/0x170 [ 879.593451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.593451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.593451][ T72] netlink_rcv_skb+0x130/0x360 [ 879.593451][ T72] netlink_unicast+0x449/0x710 [ 879.593451][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.593451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.593451][ T72] ___sys_sendmsg+0xee/0x170 [ 879.593451][ T72] __sys_sendmsg+0xcd/0x170 [ 879.593451][ T72] do_syscall_64+0xc6/0x1e0 [ 879.593451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.593451][ T72] [ 879.594997][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 879.594997][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.594997][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.594997][ T72] ipv6_find_idev+0x102/0x170 [ 879.594997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.594997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.594997][ T72] netlink_rcv_skb+0x130/0x360 [ 879.594997][ T72] netlink_unicast+0x449/0x710 [ 879.594997][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.594997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.594997][ T72] ___sys_sendmsg+0xee/0x170 [ 879.594997][ T72] __sys_sendmsg+0xcd/0x170 [ 879.594997][ T72] do_syscall_64+0xc6/0x1e0 [ 879.594997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.594997][ T72] [ 879.596705][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 879.597016][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 879.597016][ T72] netdev_get_by_index+0x5e/0x80 [ 879.597016][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.597016][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.597016][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.597016][ T72] ipv6_add_addr+0x411/0x2000 [ 879.597016][ T72] inet6_addr_add+0x30e/0xa40 [ 879.597016][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.597016][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.597016][ T72] netlink_rcv_skb+0x130/0x360 [ 879.597016][ T72] netlink_unicast+0x449/0x710 [ 879.597016][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.597016][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.597016][ T72] ___sys_sendmsg+0xee/0x170 [ 879.597016][ T72] __sys_sendmsg+0xcd/0x170 [ 879.597016][ T72] do_syscall_64+0xc6/0x1e0 [ 879.597016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.597016][ T72] [ 879.599009][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 879.599009][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.599009][ T72] ipv6_find_idev+0x102/0x170 [ 879.599009][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.599009][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.599009][ T72] netlink_rcv_skb+0x130/0x360 [ 879.599009][ T72] netlink_unicast+0x449/0x710 [ 879.599009][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.599009][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.599009][ T72] ___sys_sendmsg+0xee/0x170 [ 879.599009][ T72] __sys_sendmsg+0xcd/0x170 [ 879.599009][ T72] do_syscall_64+0xc6/0x1e0 [ 879.599009][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.599009][ T72] [ 879.600551][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 879.600551][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.600551][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.600551][ T72] ipv6_find_idev+0x102/0x170 [ 879.600551][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.600551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.600551][ T72] netlink_rcv_skb+0x130/0x360 [ 879.600551][ T72] netlink_unicast+0x449/0x710 [ 879.600551][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.600551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.600551][ T72] ___sys_sendmsg+0xee/0x170 [ 879.600551][ T72] __sys_sendmsg+0xcd/0x170 [ 879.600551][ T72] do_syscall_64+0xc6/0x1e0 [ 879.600551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.600551][ T72] [ 879.602234][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 879.602503][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 879.602503][ T72] netdev_get_by_index+0x5e/0x80 [ 879.602503][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.602503][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.602503][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.602503][ T72] ipv6_add_addr+0x411/0x2000 [ 879.602503][ T72] inet6_addr_add+0x30e/0xa40 [ 879.602503][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.602503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.602503][ T72] netlink_rcv_skb+0x130/0x360 [ 879.602503][ T72] netlink_unicast+0x449/0x710 [ 879.602503][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.602503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.602503][ T72] ___sys_sendmsg+0xee/0x170 [ 879.602503][ T72] __sys_sendmsg+0xcd/0x170 [ 879.602503][ T72] do_syscall_64+0xc6/0x1e0 [ 879.602503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.602503][ T72] [ 879.604482][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 879.604482][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.604482][ T72] ipv6_find_idev+0x102/0x170 [ 879.604482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.604482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.604482][ T72] netlink_rcv_skb+0x130/0x360 [ 879.604482][ T72] netlink_unicast+0x449/0x710 [ 879.604482][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.604482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.604482][ T72] ___sys_sendmsg+0xee/0x170 [ 879.604482][ T72] __sys_sendmsg+0xcd/0x170 [ 879.604482][ T72] do_syscall_64+0xc6/0x1e0 [ 879.604482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.604482][ T72] [ 879.606009][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 879.606009][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.606009][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.606009][ T72] ipv6_find_idev+0x102/0x170 [ 879.606009][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.606009][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.606009][ T72] netlink_rcv_skb+0x130/0x360 [ 879.606009][ T72] netlink_unicast+0x449/0x710 [ 879.606009][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.606009][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.606009][ T72] ___sys_sendmsg+0xee/0x170 [ 879.606009][ T72] __sys_sendmsg+0xcd/0x170 [ 879.606009][ T72] do_syscall_64+0xc6/0x1e0 [ 879.606009][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.606009][ T72] [ 879.607688][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 879.608393][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 879.608393][ T72] netdev_get_by_index+0x5e/0x80 [ 879.608393][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.608393][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.608393][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.608393][ T72] ipv6_add_addr+0x411/0x2000 [ 879.608393][ T72] inet6_addr_add+0x30e/0xa40 [ 879.608393][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.608393][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.608393][ T72] netlink_rcv_skb+0x130/0x360 [ 879.608393][ T72] netlink_unicast+0x449/0x710 [ 879.608393][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.608393][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.608393][ T72] ___sys_sendmsg+0xee/0x170 [ 879.608393][ T72] __sys_sendmsg+0xcd/0x170 [ 879.608393][ T72] do_syscall_64+0xc6/0x1e0 [ 879.608393][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.608393][ T72] [ 879.610367][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 879.610367][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.610367][ T72] ipv6_find_idev+0x102/0x170 [ 879.610367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.610367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.610367][ T72] netlink_rcv_skb+0x130/0x360 [ 879.610367][ T72] netlink_unicast+0x449/0x710 [ 879.610367][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.610367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.610367][ T72] ___sys_sendmsg+0xee/0x170 [ 879.610367][ T72] __sys_sendmsg+0xcd/0x170 [ 879.610367][ T72] do_syscall_64+0xc6/0x1e0 [ 879.610367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.610367][ T72] [ 879.611895][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 879.611895][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.611895][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.611895][ T72] ipv6_find_idev+0x102/0x170 [ 879.611895][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.611895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.611895][ T72] netlink_rcv_skb+0x130/0x360 [ 879.611895][ T72] netlink_unicast+0x449/0x710 [ 879.611895][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.611895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.611895][ T72] ___sys_sendmsg+0xee/0x170 [ 879.611895][ T72] __sys_sendmsg+0xcd/0x170 [ 879.611895][ T72] do_syscall_64+0xc6/0x1e0 [ 879.611895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.611895][ T72] [ 879.613610][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 879.613934][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 879.613934][ T72] netdev_get_by_index+0x5e/0x80 [ 879.613934][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.613934][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.613934][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.613934][ T72] ipv6_add_addr+0x411/0x2000 [ 879.613934][ T72] inet6_addr_add+0x30e/0xa40 [ 879.613934][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.613934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.613934][ T72] netlink_rcv_skb+0x130/0x360 [ 879.613934][ T72] netlink_unicast+0x449/0x710 [ 879.613934][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.613934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.613934][ T72] ___sys_sendmsg+0xee/0x170 [ 879.613934][ T72] __sys_sendmsg+0xcd/0x170 [ 879.613934][ T72] do_syscall_64+0xc6/0x1e0 [ 879.613934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.613934][ T72] [ 879.615916][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 879.615916][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.615916][ T72] ipv6_find_idev+0x102/0x170 [ 879.615916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.615916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.615916][ T72] netlink_rcv_skb+0x130/0x360 [ 879.615916][ T72] netlink_unicast+0x449/0x710 [ 879.615916][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.615916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.615916][ T72] ___sys_sendmsg+0xee/0x170 [ 879.615916][ T72] __sys_sendmsg+0xcd/0x170 [ 879.615916][ T72] do_syscall_64+0xc6/0x1e0 [ 879.615916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.615916][ T72] [ 879.617453][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 879.617453][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.617453][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.617453][ T72] ipv6_find_idev+0x102/0x170 [ 879.617453][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.617453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.617453][ T72] netlink_rcv_skb+0x130/0x360 [ 879.617453][ T72] netlink_unicast+0x449/0x710 [ 879.617453][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.617453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.617453][ T72] ___sys_sendmsg+0xee/0x170 [ 879.617453][ T72] __sys_sendmsg+0xcd/0x170 [ 879.617453][ T72] do_syscall_64+0xc6/0x1e0 [ 879.617453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.617453][ T72] [ 879.619179][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 879.619494][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 879.619494][ T72] netdev_get_by_index+0x5e/0x80 [ 879.619494][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.619494][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.619494][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.619494][ T72] ipv6_add_addr+0x411/0x2000 [ 879.619494][ T72] inet6_addr_add+0x30e/0xa40 [ 879.619494][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.619494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.619494][ T72] netlink_rcv_skb+0x130/0x360 [ 879.619494][ T72] netlink_unicast+0x449/0x710 [ 879.619494][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.619494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.619494][ T72] ___sys_sendmsg+0xee/0x170 [ 879.619494][ T72] __sys_sendmsg+0xcd/0x170 [ 879.619494][ T72] do_syscall_64+0xc6/0x1e0 [ 879.619494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.619494][ T72] [ 879.621478][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 879.621478][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.621478][ T72] ipv6_find_idev+0x102/0x170 [ 879.621478][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.621478][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.621478][ T72] netlink_rcv_skb+0x130/0x360 [ 879.621478][ T72] netlink_unicast+0x449/0x710 [ 879.621478][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.621478][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.621478][ T72] ___sys_sendmsg+0xee/0x170 [ 879.621478][ T72] __sys_sendmsg+0xcd/0x170 [ 879.621478][ T72] do_syscall_64+0xc6/0x1e0 [ 879.621478][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.621478][ T72] [ 879.623194][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 879.623194][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.623194][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.623194][ T72] ipv6_find_idev+0x102/0x170 [ 879.623194][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.623194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.623194][ T72] netlink_rcv_skb+0x130/0x360 [ 879.623194][ T72] netlink_unicast+0x449/0x710 [ 879.623194][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.623194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.623194][ T72] ___sys_sendmsg+0xee/0x170 [ 879.623194][ T72] __sys_sendmsg+0xcd/0x170 [ 879.623194][ T72] do_syscall_64+0xc6/0x1e0 [ 879.623194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.623194][ T72] [ 879.625141][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 879.625447][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 879.625447][ T72] netdev_get_by_index+0x5e/0x80 [ 879.625447][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.625447][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.625447][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.625447][ T72] ipv6_add_addr+0x411/0x2000 [ 879.625447][ T72] inet6_addr_add+0x30e/0xa40 [ 879.625447][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.625447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.625447][ T72] netlink_rcv_skb+0x130/0x360 [ 879.625447][ T72] netlink_unicast+0x449/0x710 [ 879.625447][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.625447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.625447][ T72] ___sys_sendmsg+0xee/0x170 [ 879.625447][ T72] __sys_sendmsg+0xcd/0x170 [ 879.625447][ T72] do_syscall_64+0xc6/0x1e0 [ 879.625447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.625447][ T72] [ 879.627672][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 879.627672][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.627672][ T72] ipv6_find_idev+0x102/0x170 [ 879.627672][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.627672][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.627672][ T72] netlink_rcv_skb+0x130/0x360 [ 879.627672][ T72] netlink_unicast+0x449/0x710 [ 879.627672][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.627672][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.627672][ T72] ___sys_sendmsg+0xee/0x170 [ 879.627672][ T72] __sys_sendmsg+0xcd/0x170 [ 879.627672][ T72] do_syscall_64+0xc6/0x1e0 [ 879.627672][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.627672][ T72] [ 879.629380][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 879.629380][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.629380][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.629380][ T72] ipv6_find_idev+0x102/0x170 [ 879.629380][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.629380][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.629380][ T72] netlink_rcv_skb+0x130/0x360 [ 879.629380][ T72] netlink_unicast+0x449/0x710 [ 879.629380][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.629380][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.629380][ T72] ___sys_sendmsg+0xee/0x170 [ 879.629380][ T72] __sys_sendmsg+0xcd/0x170 [ 879.629380][ T72] do_syscall_64+0xc6/0x1e0 [ 879.629380][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.629380][ T72] [ 879.631293][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 879.631599][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 879.631599][ T72] netdev_get_by_index+0x5e/0x80 [ 879.631599][ T72] fib6_nh_init+0x3d8/0x15b0 [ 879.631599][ T72] ip6_route_info_create+0xf18/0x17d0 [ 879.631599][ T72] addrconf_f6i_alloc+0x244/0x410 [ 879.631599][ T72] ipv6_add_addr+0x411/0x2000 [ 879.631599][ T72] inet6_addr_add+0x30e/0xa40 [ 879.631599][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 879.631599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.631599][ T72] netlink_rcv_skb+0x130/0x360 [ 879.631599][ T72] netlink_unicast+0x449/0x710 [ 879.631599][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.631599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.631599][ T72] ___sys_sendmsg+0xee/0x170 [ 879.631599][ T72] __sys_sendmsg+0xcd/0x170 [ 879.631599][ T72] do_syscall_64+0xc6/0x1e0 [ 879.631599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.631599][ T72] [ 879.633757][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 879.633757][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 879.633757][ T72] ipv6_find_idev+0x102/0x170 [ 879.633757][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.633757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.633757][ T72] netlink_rcv_skb+0x130/0x360 [ 879.633757][ T72] netlink_unicast+0x449/0x710 [ 879.633757][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.633757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.633757][ T72] ___sys_sendmsg+0xee/0x170 [ 879.633757][ T72] __sys_sendmsg+0xcd/0x170 [ 879.633757][ T72] do_syscall_64+0xc6/0x1e0 [ 879.633757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.633757][ T72] [ 879.635979][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 879.635979][ T72] neigh_parms_alloc+0x1e5/0x510 [ 879.635979][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 879.635979][ T72] ipv6_find_idev+0x102/0x170 [ 879.635979][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 879.635979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 879.635979][ T72] netlink_rcv_skb+0x130/0x360 [ 879.635979][ T72] netlink_unicast+0x449/0x710 [ 879.635979][ T72] netlink_sendmsg+0x723/0xbe0 [ 879.635979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 879.635979][ T72] ___sys_sendmsg+0xee/0x170 [ 879.635979][ T72] __sys_sendmsg+0xcd/0x170 [ 879.635979][ T72] do_syscall_64+0xc6/0x1e0 [ 879.635979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 879.635979][ T72] [ 889.878863][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 889.879346][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 889.879346][ T72] netdev_get_by_index+0x5e/0x80 [ 889.879346][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.879346][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.879346][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.879346][ T72] ipv6_add_addr+0x411/0x2000 [ 889.879346][ T72] inet6_addr_add+0x30e/0xa40 [ 889.879346][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.879346][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.879346][ T72] netlink_rcv_skb+0x130/0x360 [ 889.879346][ T72] netlink_unicast+0x449/0x710 [ 889.879346][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.879346][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.879346][ T72] ___sys_sendmsg+0xee/0x170 [ 889.879346][ T72] __sys_sendmsg+0xcd/0x170 [ 889.879346][ T72] do_syscall_64+0xc6/0x1e0 [ 889.879346][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.879346][ T72] [ 889.881370][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 889.881370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.881370][ T72] ipv6_find_idev+0x102/0x170 [ 889.881370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.881370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.881370][ T72] netlink_rcv_skb+0x130/0x360 [ 889.881370][ T72] netlink_unicast+0x449/0x710 [ 889.881370][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.881370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.881370][ T72] ___sys_sendmsg+0xee/0x170 [ 889.881370][ T72] __sys_sendmsg+0xcd/0x170 [ 889.881370][ T72] do_syscall_64+0xc6/0x1e0 [ 889.881370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.881370][ T72] [ 889.882922][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 889.882922][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.882922][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.882922][ T72] ipv6_find_idev+0x102/0x170 [ 889.882922][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.882922][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.882922][ T72] netlink_rcv_skb+0x130/0x360 [ 889.882922][ T72] netlink_unicast+0x449/0x710 [ 889.882922][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.882922][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.882922][ T72] ___sys_sendmsg+0xee/0x170 [ 889.882922][ T72] __sys_sendmsg+0xcd/0x170 [ 889.882922][ T72] do_syscall_64+0xc6/0x1e0 [ 889.882922][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.882922][ T72] [ 889.884625][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 889.884921][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 889.884921][ T72] netdev_get_by_index+0x5e/0x80 [ 889.884921][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.884921][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.884921][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.884921][ T72] ipv6_add_addr+0x411/0x2000 [ 889.884921][ T72] inet6_addr_add+0x30e/0xa40 [ 889.884921][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.884921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.884921][ T72] netlink_rcv_skb+0x130/0x360 [ 889.884921][ T72] netlink_unicast+0x449/0x710 [ 889.884921][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.884921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.884921][ T72] ___sys_sendmsg+0xee/0x170 [ 889.884921][ T72] __sys_sendmsg+0xcd/0x170 [ 889.884921][ T72] do_syscall_64+0xc6/0x1e0 [ 889.884921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.884921][ T72] [ 889.887311][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 889.887311][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.887311][ T72] ipv6_find_idev+0x102/0x170 [ 889.887311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.887311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.887311][ T72] netlink_rcv_skb+0x130/0x360 [ 889.887311][ T72] netlink_unicast+0x449/0x710 [ 889.887311][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.887311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.887311][ T72] ___sys_sendmsg+0xee/0x170 [ 889.887311][ T72] __sys_sendmsg+0xcd/0x170 [ 889.887311][ T72] do_syscall_64+0xc6/0x1e0 [ 889.887311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.887311][ T72] [ 889.888840][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 889.888840][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.888840][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.888840][ T72] ipv6_find_idev+0x102/0x170 [ 889.888840][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.888840][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.888840][ T72] netlink_rcv_skb+0x130/0x360 [ 889.888840][ T72] netlink_unicast+0x449/0x710 [ 889.888840][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.888840][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.888840][ T72] ___sys_sendmsg+0xee/0x170 [ 889.888840][ T72] __sys_sendmsg+0xcd/0x170 [ 889.888840][ T72] do_syscall_64+0xc6/0x1e0 [ 889.888840][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.888840][ T72] [ 889.890526][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 889.890806][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 889.890806][ T72] netdev_get_by_index+0x5e/0x80 [ 889.890806][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.890806][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.890806][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.890806][ T72] ipv6_add_addr+0x411/0x2000 [ 889.890806][ T72] inet6_addr_add+0x30e/0xa40 [ 889.890806][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.890806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.890806][ T72] netlink_rcv_skb+0x130/0x360 [ 889.890806][ T72] netlink_unicast+0x449/0x710 [ 889.890806][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.890806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.890806][ T72] ___sys_sendmsg+0xee/0x170 [ 889.890806][ T72] __sys_sendmsg+0xcd/0x170 [ 889.890806][ T72] do_syscall_64+0xc6/0x1e0 [ 889.890806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.890806][ T72] [ 889.892799][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 889.892799][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.892799][ T72] ipv6_find_idev+0x102/0x170 [ 889.892799][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.892799][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.892799][ T72] netlink_rcv_skb+0x130/0x360 [ 889.892799][ T72] netlink_unicast+0x449/0x710 [ 889.892799][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.892799][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.892799][ T72] ___sys_sendmsg+0xee/0x170 [ 889.892799][ T72] __sys_sendmsg+0xcd/0x170 [ 889.892799][ T72] do_syscall_64+0xc6/0x1e0 [ 889.892799][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.892799][ T72] [ 889.894323][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 889.894323][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.894323][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.894323][ T72] ipv6_find_idev+0x102/0x170 [ 889.894323][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.894323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.894323][ T72] netlink_rcv_skb+0x130/0x360 [ 889.894323][ T72] netlink_unicast+0x449/0x710 [ 889.894323][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.894323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.894323][ T72] ___sys_sendmsg+0xee/0x170 [ 889.894323][ T72] __sys_sendmsg+0xcd/0x170 [ 889.894323][ T72] do_syscall_64+0xc6/0x1e0 [ 889.894323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.894323][ T72] [ 889.895998][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 889.896274][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 889.896274][ T72] netdev_get_by_index+0x5e/0x80 [ 889.896274][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.896274][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.896274][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.896274][ T72] ipv6_add_addr+0x411/0x2000 [ 889.896274][ T72] inet6_addr_add+0x30e/0xa40 [ 889.896274][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.896274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.896274][ T72] netlink_rcv_skb+0x130/0x360 [ 889.896274][ T72] netlink_unicast+0x449/0x710 [ 889.896274][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.896274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.896274][ T72] ___sys_sendmsg+0xee/0x170 [ 889.896274][ T72] __sys_sendmsg+0xcd/0x170 [ 889.896274][ T72] do_syscall_64+0xc6/0x1e0 [ 889.896274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.896274][ T72] [ 889.898296][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 889.898296][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.898296][ T72] ipv6_find_idev+0x102/0x170 [ 889.898296][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.898296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.898296][ T72] netlink_rcv_skb+0x130/0x360 [ 889.898296][ T72] netlink_unicast+0x449/0x710 [ 889.898296][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.898296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.898296][ T72] ___sys_sendmsg+0xee/0x170 [ 889.898296][ T72] __sys_sendmsg+0xcd/0x170 [ 889.898296][ T72] do_syscall_64+0xc6/0x1e0 [ 889.898296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.898296][ T72] [ 889.899849][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 889.899849][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.899849][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.899849][ T72] ipv6_find_idev+0x102/0x170 [ 889.899849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.899849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.899849][ T72] netlink_rcv_skb+0x130/0x360 [ 889.899849][ T72] netlink_unicast+0x449/0x710 [ 889.899849][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.899849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.899849][ T72] ___sys_sendmsg+0xee/0x170 [ 889.899849][ T72] __sys_sendmsg+0xcd/0x170 [ 889.899849][ T72] do_syscall_64+0xc6/0x1e0 [ 889.899849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.899849][ T72] [ 889.901972][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 889.902576][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 889.902576][ T72] netdev_get_by_index+0x5e/0x80 [ 889.902576][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.902576][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.902576][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.902576][ T72] ipv6_add_addr+0x411/0x2000 [ 889.902576][ T72] inet6_addr_add+0x30e/0xa40 [ 889.902576][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.902576][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.902576][ T72] netlink_rcv_skb+0x130/0x360 [ 889.902576][ T72] netlink_unicast+0x449/0x710 [ 889.902576][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.902576][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.902576][ T72] ___sys_sendmsg+0xee/0x170 [ 889.902576][ T72] __sys_sendmsg+0xcd/0x170 [ 889.902576][ T72] do_syscall_64+0xc6/0x1e0 [ 889.902576][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.902576][ T72] [ 889.904549][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 889.904549][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.904549][ T72] ipv6_find_idev+0x102/0x170 [ 889.904549][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.904549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.904549][ T72] netlink_rcv_skb+0x130/0x360 [ 889.904549][ T72] netlink_unicast+0x449/0x710 [ 889.904549][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.904549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.904549][ T72] ___sys_sendmsg+0xee/0x170 [ 889.904549][ T72] __sys_sendmsg+0xcd/0x170 [ 889.904549][ T72] do_syscall_64+0xc6/0x1e0 [ 889.904549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.904549][ T72] [ 889.906080][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 889.906080][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.906080][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.906080][ T72] ipv6_find_idev+0x102/0x170 [ 889.906080][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.906080][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.906080][ T72] netlink_rcv_skb+0x130/0x360 [ 889.906080][ T72] netlink_unicast+0x449/0x710 [ 889.906080][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.906080][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.906080][ T72] ___sys_sendmsg+0xee/0x170 [ 889.906080][ T72] __sys_sendmsg+0xcd/0x170 [ 889.906080][ T72] do_syscall_64+0xc6/0x1e0 [ 889.906080][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.906080][ T72] [ 889.907774][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 889.908037][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 889.908037][ T72] netdev_get_by_index+0x5e/0x80 [ 889.908037][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.908037][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.908037][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.908037][ T72] ipv6_add_addr+0x411/0x2000 [ 889.908037][ T72] inet6_addr_add+0x30e/0xa40 [ 889.908037][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.908037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.908037][ T72] netlink_rcv_skb+0x130/0x360 [ 889.908037][ T72] netlink_unicast+0x449/0x710 [ 889.908037][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.908037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.908037][ T72] ___sys_sendmsg+0xee/0x170 [ 889.908037][ T72] __sys_sendmsg+0xcd/0x170 [ 889.908037][ T72] do_syscall_64+0xc6/0x1e0 [ 889.908037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.908037][ T72] [ 889.910031][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 889.910031][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.910031][ T72] ipv6_find_idev+0x102/0x170 [ 889.910031][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.910031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.910031][ T72] netlink_rcv_skb+0x130/0x360 [ 889.910031][ T72] netlink_unicast+0x449/0x710 [ 889.910031][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.910031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.910031][ T72] ___sys_sendmsg+0xee/0x170 [ 889.910031][ T72] __sys_sendmsg+0xcd/0x170 [ 889.910031][ T72] do_syscall_64+0xc6/0x1e0 [ 889.910031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.910031][ T72] [ 889.911642][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 889.911642][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.911642][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.911642][ T72] ipv6_find_idev+0x102/0x170 [ 889.911642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.911642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.911642][ T72] netlink_rcv_skb+0x130/0x360 [ 889.911642][ T72] netlink_unicast+0x449/0x710 [ 889.911642][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.911642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.911642][ T72] ___sys_sendmsg+0xee/0x170 [ 889.911642][ T72] __sys_sendmsg+0xcd/0x170 [ 889.911642][ T72] do_syscall_64+0xc6/0x1e0 [ 889.911642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.911642][ T72] [ 889.913566][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 889.913883][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 889.913883][ T72] netdev_get_by_index+0x5e/0x80 [ 889.913883][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.913883][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.913883][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.913883][ T72] ipv6_add_addr+0x411/0x2000 [ 889.913883][ T72] inet6_addr_add+0x30e/0xa40 [ 889.913883][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.913883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.913883][ T72] netlink_rcv_skb+0x130/0x360 [ 889.913883][ T72] netlink_unicast+0x449/0x710 [ 889.913883][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.913883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.913883][ T72] ___sys_sendmsg+0xee/0x170 [ 889.913883][ T72] __sys_sendmsg+0xcd/0x170 [ 889.913883][ T72] do_syscall_64+0xc6/0x1e0 [ 889.913883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.913883][ T72] [ 889.916048][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 889.916048][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.916048][ T72] ipv6_find_idev+0x102/0x170 [ 889.916048][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.916048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.916048][ T72] netlink_rcv_skb+0x130/0x360 [ 889.916048][ T72] netlink_unicast+0x449/0x710 [ 889.916048][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.916048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.916048][ T72] ___sys_sendmsg+0xee/0x170 [ 889.916048][ T72] __sys_sendmsg+0xcd/0x170 [ 889.916048][ T72] do_syscall_64+0xc6/0x1e0 [ 889.916048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.916048][ T72] [ 889.917766][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 889.917766][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.917766][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.917766][ T72] ipv6_find_idev+0x102/0x170 [ 889.917766][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.917766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.917766][ T72] netlink_rcv_skb+0x130/0x360 [ 889.917766][ T72] netlink_unicast+0x449/0x710 [ 889.917766][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.917766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.917766][ T72] ___sys_sendmsg+0xee/0x170 [ 889.917766][ T72] __sys_sendmsg+0xcd/0x170 [ 889.917766][ T72] do_syscall_64+0xc6/0x1e0 [ 889.917766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.917766][ T72] [ 889.919788][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 889.920099][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 889.920099][ T72] netdev_get_by_index+0x5e/0x80 [ 889.920099][ T72] fib6_nh_init+0x3d8/0x15b0 [ 889.920099][ T72] ip6_route_info_create+0xf18/0x17d0 [ 889.920099][ T72] addrconf_f6i_alloc+0x244/0x410 [ 889.920099][ T72] ipv6_add_addr+0x411/0x2000 [ 889.920099][ T72] inet6_addr_add+0x30e/0xa40 [ 889.920099][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 889.920099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.920099][ T72] netlink_rcv_skb+0x130/0x360 [ 889.920099][ T72] netlink_unicast+0x449/0x710 [ 889.920099][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.920099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.920099][ T72] ___sys_sendmsg+0xee/0x170 [ 889.920099][ T72] __sys_sendmsg+0xcd/0x170 [ 889.920099][ T72] do_syscall_64+0xc6/0x1e0 [ 889.920099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.920099][ T72] [ 889.922269][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 889.922269][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 889.922269][ T72] ipv6_find_idev+0x102/0x170 [ 889.922269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.922269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.922269][ T72] netlink_rcv_skb+0x130/0x360 [ 889.922269][ T72] netlink_unicast+0x449/0x710 [ 889.922269][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.922269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.922269][ T72] ___sys_sendmsg+0xee/0x170 [ 889.922269][ T72] __sys_sendmsg+0xcd/0x170 [ 889.922269][ T72] do_syscall_64+0xc6/0x1e0 [ 889.922269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.922269][ T72] [ 889.923976][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 889.923976][ T72] neigh_parms_alloc+0x1e5/0x510 [ 889.923976][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 889.923976][ T72] ipv6_find_idev+0x102/0x170 [ 889.923976][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 889.923976][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 889.923976][ T72] netlink_rcv_skb+0x130/0x360 [ 889.923976][ T72] netlink_unicast+0x449/0x710 [ 889.923976][ T72] netlink_sendmsg+0x723/0xbe0 [ 889.923976][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 889.923976][ T72] ___sys_sendmsg+0xee/0x170 [ 889.923976][ T72] __sys_sendmsg+0xcd/0x170 [ 889.923976][ T72] do_syscall_64+0xc6/0x1e0 [ 889.923976][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 889.923976][ T72] [ 900.166911][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 900.167362][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 900.167362][ T72] netdev_get_by_index+0x5e/0x80 [ 900.167362][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.167362][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.167362][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.167362][ T72] ipv6_add_addr+0x411/0x2000 [ 900.167362][ T72] inet6_addr_add+0x30e/0xa40 [ 900.167362][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.167362][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.167362][ T72] netlink_rcv_skb+0x130/0x360 [ 900.167362][ T72] netlink_unicast+0x449/0x710 [ 900.167362][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.167362][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.167362][ T72] ___sys_sendmsg+0xee/0x170 [ 900.167362][ T72] __sys_sendmsg+0xcd/0x170 [ 900.167362][ T72] do_syscall_64+0xc6/0x1e0 [ 900.167362][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.167362][ T72] [ 900.169374][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 900.169374][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.169374][ T72] ipv6_find_idev+0x102/0x170 [ 900.169374][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.169374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.169374][ T72] netlink_rcv_skb+0x130/0x360 [ 900.169374][ T72] netlink_unicast+0x449/0x710 [ 900.169374][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.169374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.169374][ T72] ___sys_sendmsg+0xee/0x170 [ 900.169374][ T72] __sys_sendmsg+0xcd/0x170 [ 900.169374][ T72] do_syscall_64+0xc6/0x1e0 [ 900.169374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.169374][ T72] [ 900.170913][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 900.170913][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.170913][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.170913][ T72] ipv6_find_idev+0x102/0x170 [ 900.170913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.170913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.170913][ T72] netlink_rcv_skb+0x130/0x360 [ 900.170913][ T72] netlink_unicast+0x449/0x710 [ 900.170913][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.170913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.170913][ T72] ___sys_sendmsg+0xee/0x170 [ 900.170913][ T72] __sys_sendmsg+0xcd/0x170 [ 900.170913][ T72] do_syscall_64+0xc6/0x1e0 [ 900.170913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.170913][ T72] [ 900.172620][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 900.172915][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 900.172915][ T72] netdev_get_by_index+0x5e/0x80 [ 900.172915][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.172915][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.172915][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.172915][ T72] ipv6_add_addr+0x411/0x2000 [ 900.172915][ T72] inet6_addr_add+0x30e/0xa40 [ 900.172915][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.172915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.172915][ T72] netlink_rcv_skb+0x130/0x360 [ 900.172915][ T72] netlink_unicast+0x449/0x710 [ 900.172915][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.172915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.172915][ T72] ___sys_sendmsg+0xee/0x170 [ 900.172915][ T72] __sys_sendmsg+0xcd/0x170 [ 900.172915][ T72] do_syscall_64+0xc6/0x1e0 [ 900.172915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.172915][ T72] [ 900.174906][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 900.174906][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.174906][ T72] ipv6_find_idev+0x102/0x170 [ 900.174906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.174906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.174906][ T72] netlink_rcv_skb+0x130/0x360 [ 900.174906][ T72] netlink_unicast+0x449/0x710 [ 900.174906][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.174906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.174906][ T72] ___sys_sendmsg+0xee/0x170 [ 900.174906][ T72] __sys_sendmsg+0xcd/0x170 [ 900.174906][ T72] do_syscall_64+0xc6/0x1e0 [ 900.174906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.174906][ T72] [ 900.176459][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 900.176459][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.176459][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.176459][ T72] ipv6_find_idev+0x102/0x170 [ 900.176459][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.176459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.176459][ T72] netlink_rcv_skb+0x130/0x360 [ 900.176459][ T72] netlink_unicast+0x449/0x710 [ 900.176459][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.176459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.176459][ T72] ___sys_sendmsg+0xee/0x170 [ 900.176459][ T72] __sys_sendmsg+0xcd/0x170 [ 900.176459][ T72] do_syscall_64+0xc6/0x1e0 [ 900.176459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.176459][ T72] [ 900.178157][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 900.178431][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 900.178431][ T72] netdev_get_by_index+0x5e/0x80 [ 900.178431][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.178431][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.178431][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.178431][ T72] ipv6_add_addr+0x411/0x2000 [ 900.178431][ T72] inet6_addr_add+0x30e/0xa40 [ 900.178431][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.178431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.178431][ T72] netlink_rcv_skb+0x130/0x360 [ 900.178431][ T72] netlink_unicast+0x449/0x710 [ 900.178431][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.178431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.178431][ T72] ___sys_sendmsg+0xee/0x170 [ 900.178431][ T72] __sys_sendmsg+0xcd/0x170 [ 900.178431][ T72] do_syscall_64+0xc6/0x1e0 [ 900.178431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.178431][ T72] [ 900.180434][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 900.180434][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.180434][ T72] ipv6_find_idev+0x102/0x170 [ 900.180434][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.180434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.180434][ T72] netlink_rcv_skb+0x130/0x360 [ 900.180434][ T72] netlink_unicast+0x449/0x710 [ 900.180434][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.180434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.180434][ T72] ___sys_sendmsg+0xee/0x170 [ 900.180434][ T72] __sys_sendmsg+0xcd/0x170 [ 900.180434][ T72] do_syscall_64+0xc6/0x1e0 [ 900.180434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.180434][ T72] [ 900.181963][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 900.181963][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.181963][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.181963][ T72] ipv6_find_idev+0x102/0x170 [ 900.181963][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.181963][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.181963][ T72] netlink_rcv_skb+0x130/0x360 [ 900.181963][ T72] netlink_unicast+0x449/0x710 [ 900.181963][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.181963][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.181963][ T72] ___sys_sendmsg+0xee/0x170 [ 900.181963][ T72] __sys_sendmsg+0xcd/0x170 [ 900.181963][ T72] do_syscall_64+0xc6/0x1e0 [ 900.181963][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.181963][ T72] [ 900.184051][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 900.184640][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 900.184640][ T72] netdev_get_by_index+0x5e/0x80 [ 900.184640][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.184640][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.184640][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.184640][ T72] ipv6_add_addr+0x411/0x2000 [ 900.184640][ T72] inet6_addr_add+0x30e/0xa40 [ 900.184640][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.184640][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.184640][ T72] netlink_rcv_skb+0x130/0x360 [ 900.184640][ T72] netlink_unicast+0x449/0x710 [ 900.184640][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.184640][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.184640][ T72] ___sys_sendmsg+0xee/0x170 [ 900.184640][ T72] __sys_sendmsg+0xcd/0x170 [ 900.184640][ T72] do_syscall_64+0xc6/0x1e0 [ 900.184640][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.184640][ T72] [ 900.186614][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 900.186614][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.186614][ T72] ipv6_find_idev+0x102/0x170 [ 900.186614][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.186614][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.186614][ T72] netlink_rcv_skb+0x130/0x360 [ 900.186614][ T72] netlink_unicast+0x449/0x710 [ 900.186614][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.186614][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.186614][ T72] ___sys_sendmsg+0xee/0x170 [ 900.186614][ T72] __sys_sendmsg+0xcd/0x170 [ 900.186614][ T72] do_syscall_64+0xc6/0x1e0 [ 900.186614][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.186614][ T72] [ 900.188152][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 900.188152][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.188152][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.188152][ T72] ipv6_find_idev+0x102/0x170 [ 900.188152][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.188152][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.188152][ T72] netlink_rcv_skb+0x130/0x360 [ 900.188152][ T72] netlink_unicast+0x449/0x710 [ 900.188152][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.188152][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.188152][ T72] ___sys_sendmsg+0xee/0x170 [ 900.188152][ T72] __sys_sendmsg+0xcd/0x170 [ 900.188152][ T72] do_syscall_64+0xc6/0x1e0 [ 900.188152][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.188152][ T72] [ 900.189833][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 900.190103][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 900.190103][ T72] netdev_get_by_index+0x5e/0x80 [ 900.190103][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.190103][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.190103][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.190103][ T72] ipv6_add_addr+0x411/0x2000 [ 900.190103][ T72] inet6_addr_add+0x30e/0xa40 [ 900.190103][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.190103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.190103][ T72] netlink_rcv_skb+0x130/0x360 [ 900.190103][ T72] netlink_unicast+0x449/0x710 [ 900.190103][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.190103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.190103][ T72] ___sys_sendmsg+0xee/0x170 [ 900.190103][ T72] __sys_sendmsg+0xcd/0x170 [ 900.190103][ T72] do_syscall_64+0xc6/0x1e0 [ 900.190103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.190103][ T72] [ 900.192086][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 900.192086][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.192086][ T72] ipv6_find_idev+0x102/0x170 [ 900.192086][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.192086][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.192086][ T72] netlink_rcv_skb+0x130/0x360 [ 900.192086][ T72] netlink_unicast+0x449/0x710 [ 900.192086][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.192086][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.192086][ T72] ___sys_sendmsg+0xee/0x170 [ 900.192086][ T72] __sys_sendmsg+0xcd/0x170 [ 900.192086][ T72] do_syscall_64+0xc6/0x1e0 [ 900.192086][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.192086][ T72] [ 900.193622][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 900.193622][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.193622][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.193622][ T72] ipv6_find_idev+0x102/0x170 [ 900.193622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.193622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.193622][ T72] netlink_rcv_skb+0x130/0x360 [ 900.193622][ T72] netlink_unicast+0x449/0x710 [ 900.193622][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.193622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.193622][ T72] ___sys_sendmsg+0xee/0x170 [ 900.193622][ T72] __sys_sendmsg+0xcd/0x170 [ 900.193622][ T72] do_syscall_64+0xc6/0x1e0 [ 900.193622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.193622][ T72] [ 900.195361][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 900.195675][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 900.195675][ T72] netdev_get_by_index+0x5e/0x80 [ 900.195675][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.195675][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.195675][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.195675][ T72] ipv6_add_addr+0x411/0x2000 [ 900.195675][ T72] inet6_addr_add+0x30e/0xa40 [ 900.195675][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.195675][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.195675][ T72] netlink_rcv_skb+0x130/0x360 [ 900.195675][ T72] netlink_unicast+0x449/0x710 [ 900.195675][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.195675][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.195675][ T72] ___sys_sendmsg+0xee/0x170 [ 900.195675][ T72] __sys_sendmsg+0xcd/0x170 [ 900.195675][ T72] do_syscall_64+0xc6/0x1e0 [ 900.195675][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.195675][ T72] [ 900.197681][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 900.197681][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.197681][ T72] ipv6_find_idev+0x102/0x170 [ 900.197681][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.197681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.197681][ T72] netlink_rcv_skb+0x130/0x360 [ 900.197681][ T72] netlink_unicast+0x449/0x710 [ 900.197681][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.197681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.197681][ T72] ___sys_sendmsg+0xee/0x170 [ 900.197681][ T72] __sys_sendmsg+0xcd/0x170 [ 900.197681][ T72] do_syscall_64+0xc6/0x1e0 [ 900.197681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.197681][ T72] [ 900.199214][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 900.199214][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.199214][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.199214][ T72] ipv6_find_idev+0x102/0x170 [ 900.199214][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.199214][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.199214][ T72] netlink_rcv_skb+0x130/0x360 [ 900.199214][ T72] netlink_unicast+0x449/0x710 [ 900.199214][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.199214][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.199214][ T72] ___sys_sendmsg+0xee/0x170 [ 900.199214][ T72] __sys_sendmsg+0xcd/0x170 [ 900.199214][ T72] do_syscall_64+0xc6/0x1e0 [ 900.199214][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.199214][ T72] [ 900.201121][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 900.201428][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 900.201428][ T72] netdev_get_by_index+0x5e/0x80 [ 900.201428][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.201428][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.201428][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.201428][ T72] ipv6_add_addr+0x411/0x2000 [ 900.201428][ T72] inet6_addr_add+0x30e/0xa40 [ 900.201428][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.201428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.201428][ T72] netlink_rcv_skb+0x130/0x360 [ 900.201428][ T72] netlink_unicast+0x449/0x710 [ 900.201428][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.201428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.201428][ T72] ___sys_sendmsg+0xee/0x170 [ 900.201428][ T72] __sys_sendmsg+0xcd/0x170 [ 900.201428][ T72] do_syscall_64+0xc6/0x1e0 [ 900.201428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.201428][ T72] [ 900.203667][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 900.203667][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.203667][ T72] ipv6_find_idev+0x102/0x170 [ 900.203667][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.203667][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.203667][ T72] netlink_rcv_skb+0x130/0x360 [ 900.203667][ T72] netlink_unicast+0x449/0x710 [ 900.203667][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.203667][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.203667][ T72] ___sys_sendmsg+0xee/0x170 [ 900.203667][ T72] __sys_sendmsg+0xcd/0x170 [ 900.203667][ T72] do_syscall_64+0xc6/0x1e0 [ 900.203667][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.203667][ T72] [ 900.205386][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 900.205386][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.205386][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.205386][ T72] ipv6_find_idev+0x102/0x170 [ 900.205386][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.205386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.205386][ T72] netlink_rcv_skb+0x130/0x360 [ 900.205386][ T72] netlink_unicast+0x449/0x710 [ 900.205386][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.205386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.205386][ T72] ___sys_sendmsg+0xee/0x170 [ 900.205386][ T72] __sys_sendmsg+0xcd/0x170 [ 900.205386][ T72] do_syscall_64+0xc6/0x1e0 [ 900.205386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.205386][ T72] [ 900.207300][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 900.207604][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 900.207604][ T72] netdev_get_by_index+0x5e/0x80 [ 900.207604][ T72] fib6_nh_init+0x3d8/0x15b0 [ 900.207604][ T72] ip6_route_info_create+0xf18/0x17d0 [ 900.207604][ T72] addrconf_f6i_alloc+0x244/0x410 [ 900.207604][ T72] ipv6_add_addr+0x411/0x2000 [ 900.207604][ T72] inet6_addr_add+0x30e/0xa40 [ 900.207604][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 900.207604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.207604][ T72] netlink_rcv_skb+0x130/0x360 [ 900.207604][ T72] netlink_unicast+0x449/0x710 [ 900.207604][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.207604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.207604][ T72] ___sys_sendmsg+0xee/0x170 [ 900.207604][ T72] __sys_sendmsg+0xcd/0x170 [ 900.207604][ T72] do_syscall_64+0xc6/0x1e0 [ 900.207604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.207604][ T72] [ 900.209765][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 900.209765][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 900.209765][ T72] ipv6_find_idev+0x102/0x170 [ 900.209765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.209765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.209765][ T72] netlink_rcv_skb+0x130/0x360 [ 900.209765][ T72] netlink_unicast+0x449/0x710 [ 900.209765][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.209765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.209765][ T72] ___sys_sendmsg+0xee/0x170 [ 900.209765][ T72] __sys_sendmsg+0xcd/0x170 [ 900.209765][ T72] do_syscall_64+0xc6/0x1e0 [ 900.209765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.209765][ T72] [ 900.211471][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 900.211471][ T72] neigh_parms_alloc+0x1e5/0x510 [ 900.211471][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 900.211471][ T72] ipv6_find_idev+0x102/0x170 [ 900.211471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 900.211471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 900.211471][ T72] netlink_rcv_skb+0x130/0x360 [ 900.211471][ T72] netlink_unicast+0x449/0x710 [ 900.211471][ T72] netlink_sendmsg+0x723/0xbe0 [ 900.211471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 900.211471][ T72] ___sys_sendmsg+0xee/0x170 [ 900.211471][ T72] __sys_sendmsg+0xcd/0x170 [ 900.211471][ T72] do_syscall_64+0xc6/0x1e0 [ 900.211471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 900.211471][ T72] [ 910.454826][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 910.455334][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 910.455334][ T72] netdev_get_by_index+0x5e/0x80 [ 910.455334][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.455334][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.455334][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.455334][ T72] ipv6_add_addr+0x411/0x2000 [ 910.455334][ T72] inet6_addr_add+0x30e/0xa40 [ 910.455334][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.455334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.455334][ T72] netlink_rcv_skb+0x130/0x360 [ 910.455334][ T72] netlink_unicast+0x449/0x710 [ 910.455334][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.455334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.455334][ T72] ___sys_sendmsg+0xee/0x170 [ 910.455334][ T72] __sys_sendmsg+0xcd/0x170 [ 910.455334][ T72] do_syscall_64+0xc6/0x1e0 [ 910.455334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.455334][ T72] [ 910.457980][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 910.457980][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.457980][ T72] ipv6_find_idev+0x102/0x170 [ 910.457980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.457980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.457980][ T72] netlink_rcv_skb+0x130/0x360 [ 910.457980][ T72] netlink_unicast+0x449/0x710 [ 910.457980][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.457980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.457980][ T72] ___sys_sendmsg+0xee/0x170 [ 910.457980][ T72] __sys_sendmsg+0xcd/0x170 [ 910.457980][ T72] do_syscall_64+0xc6/0x1e0 [ 910.457980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.457980][ T72] [ 910.459690][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 910.459690][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.459690][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.459690][ T72] ipv6_find_idev+0x102/0x170 [ 910.459690][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.459690][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.459690][ T72] netlink_rcv_skb+0x130/0x360 [ 910.459690][ T72] netlink_unicast+0x449/0x710 [ 910.459690][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.459690][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.459690][ T72] ___sys_sendmsg+0xee/0x170 [ 910.459690][ T72] __sys_sendmsg+0xcd/0x170 [ 910.459690][ T72] do_syscall_64+0xc6/0x1e0 [ 910.459690][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.459690][ T72] [ 910.461578][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 910.461883][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 910.461883][ T72] netdev_get_by_index+0x5e/0x80 [ 910.461883][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.461883][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.461883][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.461883][ T72] ipv6_add_addr+0x411/0x2000 [ 910.461883][ T72] inet6_addr_add+0x30e/0xa40 [ 910.461883][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.461883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.461883][ T72] netlink_rcv_skb+0x130/0x360 [ 910.461883][ T72] netlink_unicast+0x449/0x710 [ 910.461883][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.461883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.461883][ T72] ___sys_sendmsg+0xee/0x170 [ 910.461883][ T72] __sys_sendmsg+0xcd/0x170 [ 910.461883][ T72] do_syscall_64+0xc6/0x1e0 [ 910.461883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.461883][ T72] [ 910.464089][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 910.464089][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.464089][ T72] ipv6_find_idev+0x102/0x170 [ 910.464089][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.464089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.464089][ T72] netlink_rcv_skb+0x130/0x360 [ 910.464089][ T72] netlink_unicast+0x449/0x710 [ 910.464089][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.464089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.464089][ T72] ___sys_sendmsg+0xee/0x170 [ 910.464089][ T72] __sys_sendmsg+0xcd/0x170 [ 910.464089][ T72] do_syscall_64+0xc6/0x1e0 [ 910.464089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.464089][ T72] [ 910.465792][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 910.465792][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.465792][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.465792][ T72] ipv6_find_idev+0x102/0x170 [ 910.465792][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.465792][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.465792][ T72] netlink_rcv_skb+0x130/0x360 [ 910.465792][ T72] netlink_unicast+0x449/0x710 [ 910.465792][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.465792][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.465792][ T72] ___sys_sendmsg+0xee/0x170 [ 910.465792][ T72] __sys_sendmsg+0xcd/0x170 [ 910.465792][ T72] do_syscall_64+0xc6/0x1e0 [ 910.465792][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.465792][ T72] [ 910.467675][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 910.467982][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 910.467982][ T72] netdev_get_by_index+0x5e/0x80 [ 910.467982][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.467982][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.467982][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.467982][ T72] ipv6_add_addr+0x411/0x2000 [ 910.467982][ T72] inet6_addr_add+0x30e/0xa40 [ 910.467982][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.467982][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.467982][ T72] netlink_rcv_skb+0x130/0x360 [ 910.467982][ T72] netlink_unicast+0x449/0x710 [ 910.467982][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.467982][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.467982][ T72] ___sys_sendmsg+0xee/0x170 [ 910.467982][ T72] __sys_sendmsg+0xcd/0x170 [ 910.467982][ T72] do_syscall_64+0xc6/0x1e0 [ 910.467982][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.467982][ T72] [ 910.470304][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 910.470304][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.470304][ T72] ipv6_find_idev+0x102/0x170 [ 910.470304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.470304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.470304][ T72] netlink_rcv_skb+0x130/0x360 [ 910.470304][ T72] netlink_unicast+0x449/0x710 [ 910.470304][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.470304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.470304][ T72] ___sys_sendmsg+0xee/0x170 [ 910.470304][ T72] __sys_sendmsg+0xcd/0x170 [ 910.470304][ T72] do_syscall_64+0xc6/0x1e0 [ 910.470304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.470304][ T72] [ 910.472006][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 910.472006][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.472006][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.472006][ T72] ipv6_find_idev+0x102/0x170 [ 910.472006][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.472006][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.472006][ T72] netlink_rcv_skb+0x130/0x360 [ 910.472006][ T72] netlink_unicast+0x449/0x710 [ 910.472006][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.472006][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.472006][ T72] ___sys_sendmsg+0xee/0x170 [ 910.472006][ T72] __sys_sendmsg+0xcd/0x170 [ 910.472006][ T72] do_syscall_64+0xc6/0x1e0 [ 910.472006][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.472006][ T72] [ 910.473885][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 910.474175][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 910.474175][ T72] netdev_get_by_index+0x5e/0x80 [ 910.474175][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.474175][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.474175][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.474175][ T72] ipv6_add_addr+0x411/0x2000 [ 910.474175][ T72] inet6_addr_add+0x30e/0xa40 [ 910.474175][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.474175][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.474175][ T72] netlink_rcv_skb+0x130/0x360 [ 910.474175][ T72] netlink_unicast+0x449/0x710 [ 910.474175][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.474175][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.474175][ T72] ___sys_sendmsg+0xee/0x170 [ 910.474175][ T72] __sys_sendmsg+0xcd/0x170 [ 910.474175][ T72] do_syscall_64+0xc6/0x1e0 [ 910.474175][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.474175][ T72] [ 910.476370][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 910.476370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.476370][ T72] ipv6_find_idev+0x102/0x170 [ 910.476370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.476370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.476370][ T72] netlink_rcv_skb+0x130/0x360 [ 910.476370][ T72] netlink_unicast+0x449/0x710 [ 910.476370][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.476370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.476370][ T72] ___sys_sendmsg+0xee/0x170 [ 910.476370][ T72] __sys_sendmsg+0xcd/0x170 [ 910.476370][ T72] do_syscall_64+0xc6/0x1e0 [ 910.476370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.476370][ T72] [ 910.478082][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 910.478082][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.478082][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.478082][ T72] ipv6_find_idev+0x102/0x170 [ 910.478082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.478082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.478082][ T72] netlink_rcv_skb+0x130/0x360 [ 910.478082][ T72] netlink_unicast+0x449/0x710 [ 910.478082][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.478082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.478082][ T72] ___sys_sendmsg+0xee/0x170 [ 910.478082][ T72] __sys_sendmsg+0xcd/0x170 [ 910.478082][ T72] do_syscall_64+0xc6/0x1e0 [ 910.478082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.478082][ T72] [ 910.480063][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 910.480358][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 910.480358][ T72] netdev_get_by_index+0x5e/0x80 [ 910.480358][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.480358][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.480358][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.480358][ T72] ipv6_add_addr+0x411/0x2000 [ 910.480358][ T72] inet6_addr_add+0x30e/0xa40 [ 910.480358][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.480358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.480358][ T72] netlink_rcv_skb+0x130/0x360 [ 910.480358][ T72] netlink_unicast+0x449/0x710 [ 910.480358][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.480358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.480358][ T72] ___sys_sendmsg+0xee/0x170 [ 910.480358][ T72] __sys_sendmsg+0xcd/0x170 [ 910.480358][ T72] do_syscall_64+0xc6/0x1e0 [ 910.480358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.480358][ T72] [ 910.482578][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 910.482578][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.482578][ T72] ipv6_find_idev+0x102/0x170 [ 910.482578][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.482578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.482578][ T72] netlink_rcv_skb+0x130/0x360 [ 910.482578][ T72] netlink_unicast+0x449/0x710 [ 910.482578][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.482578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.482578][ T72] ___sys_sendmsg+0xee/0x170 [ 910.482578][ T72] __sys_sendmsg+0xcd/0x170 [ 910.482578][ T72] do_syscall_64+0xc6/0x1e0 [ 910.482578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.482578][ T72] [ 910.484295][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 910.484295][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.484295][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.484295][ T72] ipv6_find_idev+0x102/0x170 [ 910.484295][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.484295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.484295][ T72] netlink_rcv_skb+0x130/0x360 [ 910.484295][ T72] netlink_unicast+0x449/0x710 [ 910.484295][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.484295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.484295][ T72] ___sys_sendmsg+0xee/0x170 [ 910.484295][ T72] __sys_sendmsg+0xcd/0x170 [ 910.484295][ T72] do_syscall_64+0xc6/0x1e0 [ 910.484295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.484295][ T72] [ 910.486410][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 910.486709][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 910.486709][ T72] netdev_get_by_index+0x5e/0x80 [ 910.486709][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.486709][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.486709][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.486709][ T72] ipv6_add_addr+0x411/0x2000 [ 910.486709][ T72] inet6_addr_add+0x30e/0xa40 [ 910.486709][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.486709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.486709][ T72] netlink_rcv_skb+0x130/0x360 [ 910.486709][ T72] netlink_unicast+0x449/0x710 [ 910.486709][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.486709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.486709][ T72] ___sys_sendmsg+0xee/0x170 [ 910.486709][ T72] __sys_sendmsg+0xcd/0x170 [ 910.486709][ T72] do_syscall_64+0xc6/0x1e0 [ 910.486709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.486709][ T72] [ 910.488993][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 910.488993][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.488993][ T72] ipv6_find_idev+0x102/0x170 [ 910.488993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.488993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.488993][ T72] netlink_rcv_skb+0x130/0x360 [ 910.488993][ T72] netlink_unicast+0x449/0x710 [ 910.488993][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.488993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.488993][ T72] ___sys_sendmsg+0xee/0x170 [ 910.488993][ T72] __sys_sendmsg+0xcd/0x170 [ 910.488993][ T72] do_syscall_64+0xc6/0x1e0 [ 910.488993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.488993][ T72] [ 910.490774][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 910.490774][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.490774][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.490774][ T72] ipv6_find_idev+0x102/0x170 [ 910.490774][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.490774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.490774][ T72] netlink_rcv_skb+0x130/0x360 [ 910.490774][ T72] netlink_unicast+0x449/0x710 [ 910.490774][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.490774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.490774][ T72] ___sys_sendmsg+0xee/0x170 [ 910.490774][ T72] __sys_sendmsg+0xcd/0x170 [ 910.490774][ T72] do_syscall_64+0xc6/0x1e0 [ 910.490774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.490774][ T72] [ 910.492769][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 910.493056][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 910.493056][ T72] netdev_get_by_index+0x5e/0x80 [ 910.493056][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.493056][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.493056][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.493056][ T72] ipv6_add_addr+0x411/0x2000 [ 910.493056][ T72] inet6_addr_add+0x30e/0xa40 [ 910.493056][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.493056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.493056][ T72] netlink_rcv_skb+0x130/0x360 [ 910.493056][ T72] netlink_unicast+0x449/0x710 [ 910.493056][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.493056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.493056][ T72] ___sys_sendmsg+0xee/0x170 [ 910.493056][ T72] __sys_sendmsg+0xcd/0x170 [ 910.493056][ T72] do_syscall_64+0xc6/0x1e0 [ 910.493056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.493056][ T72] [ 910.495331][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 910.495331][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.495331][ T72] ipv6_find_idev+0x102/0x170 [ 910.495331][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.495331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.495331][ T72] netlink_rcv_skb+0x130/0x360 [ 910.495331][ T72] netlink_unicast+0x449/0x710 [ 910.495331][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.495331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.495331][ T72] ___sys_sendmsg+0xee/0x170 [ 910.495331][ T72] __sys_sendmsg+0xcd/0x170 [ 910.495331][ T72] do_syscall_64+0xc6/0x1e0 [ 910.495331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.495331][ T72] [ 910.497137][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 910.497137][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.497137][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.497137][ T72] ipv6_find_idev+0x102/0x170 [ 910.497137][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.497137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.497137][ T72] netlink_rcv_skb+0x130/0x360 [ 910.497137][ T72] netlink_unicast+0x449/0x710 [ 910.497137][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.497137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.497137][ T72] ___sys_sendmsg+0xee/0x170 [ 910.497137][ T72] __sys_sendmsg+0xcd/0x170 [ 910.497137][ T72] do_syscall_64+0xc6/0x1e0 [ 910.497137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.497137][ T72] [ 910.499105][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 910.499397][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 910.499397][ T72] netdev_get_by_index+0x5e/0x80 [ 910.499397][ T72] fib6_nh_init+0x3d8/0x15b0 [ 910.499397][ T72] ip6_route_info_create+0xf18/0x17d0 [ 910.499397][ T72] addrconf_f6i_alloc+0x244/0x410 [ 910.499397][ T72] ipv6_add_addr+0x411/0x2000 [ 910.499397][ T72] inet6_addr_add+0x30e/0xa40 [ 910.499397][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 910.499397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.499397][ T72] netlink_rcv_skb+0x130/0x360 [ 910.499397][ T72] netlink_unicast+0x449/0x710 [ 910.499397][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.499397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.499397][ T72] ___sys_sendmsg+0xee/0x170 [ 910.499397][ T72] __sys_sendmsg+0xcd/0x170 [ 910.499397][ T72] do_syscall_64+0xc6/0x1e0 [ 910.499397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.499397][ T72] [ 910.501750][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 910.501750][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 910.501750][ T72] ipv6_find_idev+0x102/0x170 [ 910.501750][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.501750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.501750][ T72] netlink_rcv_skb+0x130/0x360 [ 910.501750][ T72] netlink_unicast+0x449/0x710 [ 910.501750][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.501750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.501750][ T72] ___sys_sendmsg+0xee/0x170 [ 910.501750][ T72] __sys_sendmsg+0xcd/0x170 [ 910.501750][ T72] do_syscall_64+0xc6/0x1e0 [ 910.501750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.501750][ T72] [ 910.503521][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 910.503521][ T72] neigh_parms_alloc+0x1e5/0x510 [ 910.503521][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 910.503521][ T72] ipv6_find_idev+0x102/0x170 [ 910.503521][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 910.503521][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 910.503521][ T72] netlink_rcv_skb+0x130/0x360 [ 910.503521][ T72] netlink_unicast+0x449/0x710 [ 910.503521][ T72] netlink_sendmsg+0x723/0xbe0 [ 910.503521][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 910.503521][ T72] ___sys_sendmsg+0xee/0x170 [ 910.503521][ T72] __sys_sendmsg+0xcd/0x170 [ 910.503521][ T72] do_syscall_64+0xc6/0x1e0 [ 910.503521][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 910.503521][ T72] [ 920.702977][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 920.703478][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 920.703478][ T72] netdev_get_by_index+0x5e/0x80 [ 920.703478][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.703478][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.703478][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.703478][ T72] ipv6_add_addr+0x411/0x2000 [ 920.703478][ T72] inet6_addr_add+0x30e/0xa40 [ 920.703478][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.703478][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.703478][ T72] netlink_rcv_skb+0x130/0x360 [ 920.703478][ T72] netlink_unicast+0x449/0x710 [ 920.703478][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.703478][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.703478][ T72] ___sys_sendmsg+0xee/0x170 [ 920.703478][ T72] __sys_sendmsg+0xcd/0x170 [ 920.703478][ T72] do_syscall_64+0xc6/0x1e0 [ 920.703478][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.703478][ T72] [ 920.705501][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 920.705501][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.705501][ T72] ipv6_find_idev+0x102/0x170 [ 920.705501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.705501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.705501][ T72] netlink_rcv_skb+0x130/0x360 [ 920.705501][ T72] netlink_unicast+0x449/0x710 [ 920.705501][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.705501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.705501][ T72] ___sys_sendmsg+0xee/0x170 [ 920.705501][ T72] __sys_sendmsg+0xcd/0x170 [ 920.705501][ T72] do_syscall_64+0xc6/0x1e0 [ 920.705501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.705501][ T72] [ 920.707047][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 920.707047][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.707047][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.707047][ T72] ipv6_find_idev+0x102/0x170 [ 920.707047][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.707047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.707047][ T72] netlink_rcv_skb+0x130/0x360 [ 920.707047][ T72] netlink_unicast+0x449/0x710 [ 920.707047][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.707047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.707047][ T72] ___sys_sendmsg+0xee/0x170 [ 920.707047][ T72] __sys_sendmsg+0xcd/0x170 [ 920.707047][ T72] do_syscall_64+0xc6/0x1e0 [ 920.707047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.707047][ T72] [ 920.708797][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 920.709080][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 920.709080][ T72] netdev_get_by_index+0x5e/0x80 [ 920.709080][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.709080][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.709080][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.709080][ T72] ipv6_add_addr+0x411/0x2000 [ 920.709080][ T72] inet6_addr_add+0x30e/0xa40 [ 920.709080][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.709080][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.709080][ T72] netlink_rcv_skb+0x130/0x360 [ 920.709080][ T72] netlink_unicast+0x449/0x710 [ 920.709080][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.709080][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.709080][ T72] ___sys_sendmsg+0xee/0x170 [ 920.709080][ T72] __sys_sendmsg+0xcd/0x170 [ 920.709080][ T72] do_syscall_64+0xc6/0x1e0 [ 920.709080][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.709080][ T72] [ 920.711075][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 920.711075][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.711075][ T72] ipv6_find_idev+0x102/0x170 [ 920.711075][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.711075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.711075][ T72] netlink_rcv_skb+0x130/0x360 [ 920.711075][ T72] netlink_unicast+0x449/0x710 [ 920.711075][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.711075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.711075][ T72] ___sys_sendmsg+0xee/0x170 [ 920.711075][ T72] __sys_sendmsg+0xcd/0x170 [ 920.711075][ T72] do_syscall_64+0xc6/0x1e0 [ 920.711075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.711075][ T72] [ 920.712635][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 920.712635][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.712635][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.712635][ T72] ipv6_find_idev+0x102/0x170 [ 920.712635][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.712635][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.712635][ T72] netlink_rcv_skb+0x130/0x360 [ 920.712635][ T72] netlink_unicast+0x449/0x710 [ 920.712635][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.712635][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.712635][ T72] ___sys_sendmsg+0xee/0x170 [ 920.712635][ T72] __sys_sendmsg+0xcd/0x170 [ 920.712635][ T72] do_syscall_64+0xc6/0x1e0 [ 920.712635][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.712635][ T72] [ 920.714319][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 920.714588][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 920.714588][ T72] netdev_get_by_index+0x5e/0x80 [ 920.714588][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.714588][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.714588][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.714588][ T72] ipv6_add_addr+0x411/0x2000 [ 920.714588][ T72] inet6_addr_add+0x30e/0xa40 [ 920.714588][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.714588][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.714588][ T72] netlink_rcv_skb+0x130/0x360 [ 920.714588][ T72] netlink_unicast+0x449/0x710 [ 920.714588][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.714588][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.714588][ T72] ___sys_sendmsg+0xee/0x170 [ 920.714588][ T72] __sys_sendmsg+0xcd/0x170 [ 920.714588][ T72] do_syscall_64+0xc6/0x1e0 [ 920.714588][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.714588][ T72] [ 920.716610][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 920.716610][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.716610][ T72] ipv6_find_idev+0x102/0x170 [ 920.716610][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.716610][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.716610][ T72] netlink_rcv_skb+0x130/0x360 [ 920.716610][ T72] netlink_unicast+0x449/0x710 [ 920.716610][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.716610][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.716610][ T72] ___sys_sendmsg+0xee/0x170 [ 920.716610][ T72] __sys_sendmsg+0xcd/0x170 [ 920.716610][ T72] do_syscall_64+0xc6/0x1e0 [ 920.716610][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.716610][ T72] [ 920.718146][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 920.718146][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.718146][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.718146][ T72] ipv6_find_idev+0x102/0x170 [ 920.718146][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.718146][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.718146][ T72] netlink_rcv_skb+0x130/0x360 [ 920.718146][ T72] netlink_unicast+0x449/0x710 [ 920.718146][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.718146][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.718146][ T72] ___sys_sendmsg+0xee/0x170 [ 920.718146][ T72] __sys_sendmsg+0xcd/0x170 [ 920.718146][ T72] do_syscall_64+0xc6/0x1e0 [ 920.718146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.718146][ T72] [ 920.719846][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 920.720145][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 920.720145][ T72] netdev_get_by_index+0x5e/0x80 [ 920.720145][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.720145][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.720145][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.720145][ T72] ipv6_add_addr+0x411/0x2000 [ 920.720145][ T72] inet6_addr_add+0x30e/0xa40 [ 920.720145][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.720145][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.720145][ T72] netlink_rcv_skb+0x130/0x360 [ 920.720145][ T72] netlink_unicast+0x449/0x710 [ 920.720145][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.720145][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.720145][ T72] ___sys_sendmsg+0xee/0x170 [ 920.720145][ T72] __sys_sendmsg+0xcd/0x170 [ 920.720145][ T72] do_syscall_64+0xc6/0x1e0 [ 920.720145][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.720145][ T72] [ 920.722126][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 920.722126][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.722126][ T72] ipv6_find_idev+0x102/0x170 [ 920.722126][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.722126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.722126][ T72] netlink_rcv_skb+0x130/0x360 [ 920.722126][ T72] netlink_unicast+0x449/0x710 [ 920.722126][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.722126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.722126][ T72] ___sys_sendmsg+0xee/0x170 [ 920.722126][ T72] __sys_sendmsg+0xcd/0x170 [ 920.722126][ T72] do_syscall_64+0xc6/0x1e0 [ 920.722126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.722126][ T72] [ 920.723657][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 920.723657][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.723657][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.723657][ T72] ipv6_find_idev+0x102/0x170 [ 920.723657][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.723657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.723657][ T72] netlink_rcv_skb+0x130/0x360 [ 920.723657][ T72] netlink_unicast+0x449/0x710 [ 920.723657][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.723657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.723657][ T72] ___sys_sendmsg+0xee/0x170 [ 920.723657][ T72] __sys_sendmsg+0xcd/0x170 [ 920.723657][ T72] do_syscall_64+0xc6/0x1e0 [ 920.723657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.723657][ T72] [ 920.725781][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 920.726383][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 920.726383][ T72] netdev_get_by_index+0x5e/0x80 [ 920.726383][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.726383][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.726383][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.726383][ T72] ipv6_add_addr+0x411/0x2000 [ 920.726383][ T72] inet6_addr_add+0x30e/0xa40 [ 920.726383][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.726383][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.726383][ T72] netlink_rcv_skb+0x130/0x360 [ 920.726383][ T72] netlink_unicast+0x449/0x710 [ 920.726383][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.726383][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.726383][ T72] ___sys_sendmsg+0xee/0x170 [ 920.726383][ T72] __sys_sendmsg+0xcd/0x170 [ 920.726383][ T72] do_syscall_64+0xc6/0x1e0 [ 920.726383][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.726383][ T72] [ 920.728387][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 920.728387][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.728387][ T72] ipv6_find_idev+0x102/0x170 [ 920.728387][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.728387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.728387][ T72] netlink_rcv_skb+0x130/0x360 [ 920.728387][ T72] netlink_unicast+0x449/0x710 [ 920.728387][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.728387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.728387][ T72] ___sys_sendmsg+0xee/0x170 [ 920.728387][ T72] __sys_sendmsg+0xcd/0x170 [ 920.728387][ T72] do_syscall_64+0xc6/0x1e0 [ 920.728387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.728387][ T72] [ 920.729926][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 920.729926][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.729926][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.729926][ T72] ipv6_find_idev+0x102/0x170 [ 920.729926][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.729926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.729926][ T72] netlink_rcv_skb+0x130/0x360 [ 920.729926][ T72] netlink_unicast+0x449/0x710 [ 920.729926][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.729926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.729926][ T72] ___sys_sendmsg+0xee/0x170 [ 920.729926][ T72] __sys_sendmsg+0xcd/0x170 [ 920.729926][ T72] do_syscall_64+0xc6/0x1e0 [ 920.729926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.729926][ T72] [ 920.731612][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 920.731966][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 920.731966][ T72] netdev_get_by_index+0x5e/0x80 [ 920.731966][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.731966][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.731966][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.731966][ T72] ipv6_add_addr+0x411/0x2000 [ 920.731966][ T72] inet6_addr_add+0x30e/0xa40 [ 920.731966][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.731966][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.731966][ T72] netlink_rcv_skb+0x130/0x360 [ 920.731966][ T72] netlink_unicast+0x449/0x710 [ 920.731966][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.731966][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.731966][ T72] ___sys_sendmsg+0xee/0x170 [ 920.731966][ T72] __sys_sendmsg+0xcd/0x170 [ 920.731966][ T72] do_syscall_64+0xc6/0x1e0 [ 920.731966][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.731966][ T72] [ 920.733957][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 920.733957][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.733957][ T72] ipv6_find_idev+0x102/0x170 [ 920.733957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.733957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.733957][ T72] netlink_rcv_skb+0x130/0x360 [ 920.733957][ T72] netlink_unicast+0x449/0x710 [ 920.733957][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.733957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.733957][ T72] ___sys_sendmsg+0xee/0x170 [ 920.733957][ T72] __sys_sendmsg+0xcd/0x170 [ 920.733957][ T72] do_syscall_64+0xc6/0x1e0 [ 920.733957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.733957][ T72] [ 920.735488][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 920.735488][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.735488][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.735488][ T72] ipv6_find_idev+0x102/0x170 [ 920.735488][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.735488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.735488][ T72] netlink_rcv_skb+0x130/0x360 [ 920.735488][ T72] netlink_unicast+0x449/0x710 [ 920.735488][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.735488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.735488][ T72] ___sys_sendmsg+0xee/0x170 [ 920.735488][ T72] __sys_sendmsg+0xcd/0x170 [ 920.735488][ T72] do_syscall_64+0xc6/0x1e0 [ 920.735488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.735488][ T72] [ 920.737558][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 920.737879][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 920.737879][ T72] netdev_get_by_index+0x5e/0x80 [ 920.737879][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.737879][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.737879][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.737879][ T72] ipv6_add_addr+0x411/0x2000 [ 920.737879][ T72] inet6_addr_add+0x30e/0xa40 [ 920.737879][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.737879][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.737879][ T72] netlink_rcv_skb+0x130/0x360 [ 920.737879][ T72] netlink_unicast+0x449/0x710 [ 920.737879][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.737879][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.737879][ T72] ___sys_sendmsg+0xee/0x170 [ 920.737879][ T72] __sys_sendmsg+0xcd/0x170 [ 920.737879][ T72] do_syscall_64+0xc6/0x1e0 [ 920.737879][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.737879][ T72] [ 920.740069][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 920.740069][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.740069][ T72] ipv6_find_idev+0x102/0x170 [ 920.740069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.740069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.740069][ T72] netlink_rcv_skb+0x130/0x360 [ 920.740069][ T72] netlink_unicast+0x449/0x710 [ 920.740069][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.740069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.740069][ T72] ___sys_sendmsg+0xee/0x170 [ 920.740069][ T72] __sys_sendmsg+0xcd/0x170 [ 920.740069][ T72] do_syscall_64+0xc6/0x1e0 [ 920.740069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.740069][ T72] [ 920.741782][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 920.741782][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.741782][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.741782][ T72] ipv6_find_idev+0x102/0x170 [ 920.741782][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.741782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.741782][ T72] netlink_rcv_skb+0x130/0x360 [ 920.741782][ T72] netlink_unicast+0x449/0x710 [ 920.741782][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.741782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.741782][ T72] ___sys_sendmsg+0xee/0x170 [ 920.741782][ T72] __sys_sendmsg+0xcd/0x170 [ 920.741782][ T72] do_syscall_64+0xc6/0x1e0 [ 920.741782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.741782][ T72] [ 920.743696][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 920.744039][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 920.744039][ T72] netdev_get_by_index+0x5e/0x80 [ 920.744039][ T72] fib6_nh_init+0x3d8/0x15b0 [ 920.744039][ T72] ip6_route_info_create+0xf18/0x17d0 [ 920.744039][ T72] addrconf_f6i_alloc+0x244/0x410 [ 920.744039][ T72] ipv6_add_addr+0x411/0x2000 [ 920.744039][ T72] inet6_addr_add+0x30e/0xa40 [ 920.744039][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 920.744039][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.744039][ T72] netlink_rcv_skb+0x130/0x360 [ 920.744039][ T72] netlink_unicast+0x449/0x710 [ 920.744039][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.744039][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.744039][ T72] ___sys_sendmsg+0xee/0x170 [ 920.744039][ T72] __sys_sendmsg+0xcd/0x170 [ 920.744039][ T72] do_syscall_64+0xc6/0x1e0 [ 920.744039][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.744039][ T72] [ 920.746211][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 920.746211][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 920.746211][ T72] ipv6_find_idev+0x102/0x170 [ 920.746211][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.746211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.746211][ T72] netlink_rcv_skb+0x130/0x360 [ 920.746211][ T72] netlink_unicast+0x449/0x710 [ 920.746211][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.746211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.746211][ T72] ___sys_sendmsg+0xee/0x170 [ 920.746211][ T72] __sys_sendmsg+0xcd/0x170 [ 920.746211][ T72] do_syscall_64+0xc6/0x1e0 [ 920.746211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.746211][ T72] [ 920.747957][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 920.747957][ T72] neigh_parms_alloc+0x1e5/0x510 [ 920.747957][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 920.747957][ T72] ipv6_find_idev+0x102/0x170 [ 920.747957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 920.747957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 920.747957][ T72] netlink_rcv_skb+0x130/0x360 [ 920.747957][ T72] netlink_unicast+0x449/0x710 [ 920.747957][ T72] netlink_sendmsg+0x723/0xbe0 [ 920.747957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 920.747957][ T72] ___sys_sendmsg+0xee/0x170 [ 920.747957][ T72] __sys_sendmsg+0xcd/0x170 [ 920.747957][ T72] do_syscall_64+0xc6/0x1e0 [ 920.747957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 920.747957][ T72] [ 930.990917][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 930.991425][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 930.991425][ T72] netdev_get_by_index+0x5e/0x80 [ 930.991425][ T72] fib6_nh_init+0x3d8/0x15b0 [ 930.991425][ T72] ip6_route_info_create+0xf18/0x17d0 [ 930.991425][ T72] addrconf_f6i_alloc+0x244/0x410 [ 930.991425][ T72] ipv6_add_addr+0x411/0x2000 [ 930.991425][ T72] inet6_addr_add+0x30e/0xa40 [ 930.991425][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 930.991425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 930.991425][ T72] netlink_rcv_skb+0x130/0x360 [ 930.991425][ T72] netlink_unicast+0x449/0x710 [ 930.991425][ T72] netlink_sendmsg+0x723/0xbe0 [ 930.991425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 930.991425][ T72] ___sys_sendmsg+0xee/0x170 [ 930.991425][ T72] __sys_sendmsg+0xcd/0x170 [ 930.991425][ T72] do_syscall_64+0xc6/0x1e0 [ 930.991425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 930.991425][ T72] [ 930.993661][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 930.993661][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 930.993661][ T72] ipv6_find_idev+0x102/0x170 [ 930.993661][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 930.993661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 930.993661][ T72] netlink_rcv_skb+0x130/0x360 [ 930.993661][ T72] netlink_unicast+0x449/0x710 [ 930.993661][ T72] netlink_sendmsg+0x723/0xbe0 [ 930.993661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 930.993661][ T72] ___sys_sendmsg+0xee/0x170 [ 930.993661][ T72] __sys_sendmsg+0xcd/0x170 [ 930.993661][ T72] do_syscall_64+0xc6/0x1e0 [ 930.993661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 930.993661][ T72] [ 930.995368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 930.995368][ T72] neigh_parms_alloc+0x1e5/0x510 [ 930.995368][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 930.995368][ T72] ipv6_find_idev+0x102/0x170 [ 930.995368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 930.995368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 930.995368][ T72] netlink_rcv_skb+0x130/0x360 [ 930.995368][ T72] netlink_unicast+0x449/0x710 [ 930.995368][ T72] netlink_sendmsg+0x723/0xbe0 [ 930.995368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 930.995368][ T72] ___sys_sendmsg+0xee/0x170 [ 930.995368][ T72] __sys_sendmsg+0xcd/0x170 [ 930.995368][ T72] do_syscall_64+0xc6/0x1e0 [ 930.995368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 930.995368][ T72] [ 930.997259][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 930.997558][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 930.997558][ T72] netdev_get_by_index+0x5e/0x80 [ 930.997558][ T72] fib6_nh_init+0x3d8/0x15b0 [ 930.997558][ T72] ip6_route_info_create+0xf18/0x17d0 [ 930.997558][ T72] addrconf_f6i_alloc+0x244/0x410 [ 930.997558][ T72] ipv6_add_addr+0x411/0x2000 [ 930.997558][ T72] inet6_addr_add+0x30e/0xa40 [ 930.997558][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 930.997558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 930.997558][ T72] netlink_rcv_skb+0x130/0x360 [ 930.997558][ T72] netlink_unicast+0x449/0x710 [ 930.997558][ T72] netlink_sendmsg+0x723/0xbe0 [ 930.997558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 930.997558][ T72] ___sys_sendmsg+0xee/0x170 [ 930.997558][ T72] __sys_sendmsg+0xcd/0x170 [ 930.997558][ T72] do_syscall_64+0xc6/0x1e0 [ 930.997558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 930.997558][ T72] [ 930.999762][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 930.999762][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 930.999762][ T72] ipv6_find_idev+0x102/0x170 [ 930.999762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 930.999762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 930.999762][ T72] netlink_rcv_skb+0x130/0x360 [ 930.999762][ T72] netlink_unicast+0x449/0x710 [ 930.999762][ T72] netlink_sendmsg+0x723/0xbe0 [ 930.999762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 930.999762][ T72] ___sys_sendmsg+0xee/0x170 [ 930.999762][ T72] __sys_sendmsg+0xcd/0x170 [ 930.999762][ T72] do_syscall_64+0xc6/0x1e0 [ 930.999762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 930.999762][ T72] [ 931.001479][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 931.001479][ T72] neigh_parms_alloc+0x1e5/0x510 [ 931.001479][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 931.001479][ T72] ipv6_find_idev+0x102/0x170 [ 931.001479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.001479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.001479][ T72] netlink_rcv_skb+0x130/0x360 [ 931.001479][ T72] netlink_unicast+0x449/0x710 [ 931.001479][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.001479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.001479][ T72] ___sys_sendmsg+0xee/0x170 [ 931.001479][ T72] __sys_sendmsg+0xcd/0x170 [ 931.001479][ T72] do_syscall_64+0xc6/0x1e0 [ 931.001479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.001479][ T72] [ 931.003340][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 931.003626][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 931.003626][ T72] netdev_get_by_index+0x5e/0x80 [ 931.003626][ T72] fib6_nh_init+0x3d8/0x15b0 [ 931.003626][ T72] ip6_route_info_create+0xf18/0x17d0 [ 931.003626][ T72] addrconf_f6i_alloc+0x244/0x410 [ 931.003626][ T72] ipv6_add_addr+0x411/0x2000 [ 931.003626][ T72] inet6_addr_add+0x30e/0xa40 [ 931.003626][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 931.003626][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.003626][ T72] netlink_rcv_skb+0x130/0x360 [ 931.003626][ T72] netlink_unicast+0x449/0x710 [ 931.003626][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.003626][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.003626][ T72] ___sys_sendmsg+0xee/0x170 [ 931.003626][ T72] __sys_sendmsg+0xcd/0x170 [ 931.003626][ T72] do_syscall_64+0xc6/0x1e0 [ 931.003626][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.003626][ T72] [ 931.005842][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 931.005842][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 931.005842][ T72] ipv6_find_idev+0x102/0x170 [ 931.005842][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.005842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.005842][ T72] netlink_rcv_skb+0x130/0x360 [ 931.005842][ T72] netlink_unicast+0x449/0x710 [ 931.005842][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.005842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.005842][ T72] ___sys_sendmsg+0xee/0x170 [ 931.005842][ T72] __sys_sendmsg+0xcd/0x170 [ 931.005842][ T72] do_syscall_64+0xc6/0x1e0 [ 931.005842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.005842][ T72] [ 931.007542][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 931.007542][ T72] neigh_parms_alloc+0x1e5/0x510 [ 931.007542][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 931.007542][ T72] ipv6_find_idev+0x102/0x170 [ 931.007542][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.007542][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.007542][ T72] netlink_rcv_skb+0x130/0x360 [ 931.007542][ T72] netlink_unicast+0x449/0x710 [ 931.007542][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.007542][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.007542][ T72] ___sys_sendmsg+0xee/0x170 [ 931.007542][ T72] __sys_sendmsg+0xcd/0x170 [ 931.007542][ T72] do_syscall_64+0xc6/0x1e0 [ 931.007542][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.007542][ T72] [ 931.009424][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 931.009709][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 931.009709][ T72] netdev_get_by_index+0x5e/0x80 [ 931.009709][ T72] fib6_nh_init+0x3d8/0x15b0 [ 931.009709][ T72] ip6_route_info_create+0xf18/0x17d0 [ 931.009709][ T72] addrconf_f6i_alloc+0x244/0x410 [ 931.009709][ T72] ipv6_add_addr+0x411/0x2000 [ 931.009709][ T72] inet6_addr_add+0x30e/0xa40 [ 931.009709][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 931.009709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.009709][ T72] netlink_rcv_skb+0x130/0x360 [ 931.009709][ T72] netlink_unicast+0x449/0x710 [ 931.009709][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.009709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.009709][ T72] ___sys_sendmsg+0xee/0x170 [ 931.009709][ T72] __sys_sendmsg+0xcd/0x170 [ 931.009709][ T72] do_syscall_64+0xc6/0x1e0 [ 931.009709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.009709][ T72] [ 931.011915][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 931.011915][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 931.011915][ T72] ipv6_find_idev+0x102/0x170 [ 931.011915][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.011915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.011915][ T72] netlink_rcv_skb+0x130/0x360 [ 931.011915][ T72] netlink_unicast+0x449/0x710 [ 931.011915][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.011915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.011915][ T72] ___sys_sendmsg+0xee/0x170 [ 931.011915][ T72] __sys_sendmsg+0xcd/0x170 [ 931.011915][ T72] do_syscall_64+0xc6/0x1e0 [ 931.011915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.011915][ T72] [ 931.013637][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 931.013637][ T72] neigh_parms_alloc+0x1e5/0x510 [ 931.013637][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 931.013637][ T72] ipv6_find_idev+0x102/0x170 [ 931.013637][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.013637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.013637][ T72] netlink_rcv_skb+0x130/0x360 [ 931.013637][ T72] netlink_unicast+0x449/0x710 [ 931.013637][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.013637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.013637][ T72] ___sys_sendmsg+0xee/0x170 [ 931.013637][ T72] __sys_sendmsg+0xcd/0x170 [ 931.013637][ T72] do_syscall_64+0xc6/0x1e0 [ 931.013637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.013637][ T72] [ 931.015925][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 931.016217][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 931.016217][ T72] netdev_get_by_index+0x5e/0x80 [ 931.016217][ T72] fib6_nh_init+0x3d8/0x15b0 [ 931.016217][ T72] ip6_route_info_create+0xf18/0x17d0 [ 931.016217][ T72] addrconf_f6i_alloc+0x244/0x410 [ 931.016217][ T72] ipv6_add_addr+0x411/0x2000 [ 931.016217][ T72] inet6_addr_add+0x30e/0xa40 [ 931.016217][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 931.016217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.016217][ T72] netlink_rcv_skb+0x130/0x360 [ 931.016217][ T72] netlink_unicast+0x449/0x710 [ 931.016217][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.016217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.016217][ T72] ___sys_sendmsg+0xee/0x170 [ 931.016217][ T72] __sys_sendmsg+0xcd/0x170 [ 931.016217][ T72] do_syscall_64+0xc6/0x1e0 [ 931.016217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.016217][ T72] [ 931.018415][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 931.018415][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 931.018415][ T72] ipv6_find_idev+0x102/0x170 [ 931.018415][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.018415][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.018415][ T72] netlink_rcv_skb+0x130/0x360 [ 931.018415][ T72] netlink_unicast+0x449/0x710 [ 931.018415][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.018415][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.018415][ T72] ___sys_sendmsg+0xee/0x170 [ 931.018415][ T72] __sys_sendmsg+0xcd/0x170 [ 931.018415][ T72] do_syscall_64+0xc6/0x1e0 [ 931.018415][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.018415][ T72] [ 931.020108][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 931.020108][ T72] neigh_parms_alloc+0x1e5/0x510 [ 931.020108][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 931.020108][ T72] ipv6_find_idev+0x102/0x170 [ 931.020108][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.020108][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.020108][ T72] netlink_rcv_skb+0x130/0x360 [ 931.020108][ T72] netlink_unicast+0x449/0x710 [ 931.020108][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.020108][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.020108][ T72] ___sys_sendmsg+0xee/0x170 [ 931.020108][ T72] __sys_sendmsg+0xcd/0x170 [ 931.020108][ T72] do_syscall_64+0xc6/0x1e0 [ 931.020108][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.020108][ T72] [ 931.022001][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 931.022290][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 931.022290][ T72] netdev_get_by_index+0x5e/0x80 [ 931.022290][ T72] fib6_nh_init+0x3d8/0x15b0 [ 931.022290][ T72] ip6_route_info_create+0xf18/0x17d0 [ 931.022290][ T72] addrconf_f6i_alloc+0x244/0x410 [ 931.022290][ T72] ipv6_add_addr+0x411/0x2000 [ 931.022290][ T72] inet6_addr_add+0x30e/0xa40 [ 931.022290][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 931.022290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.022290][ T72] netlink_rcv_skb+0x130/0x360 [ 931.022290][ T72] netlink_unicast+0x449/0x710 [ 931.022290][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.022290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.022290][ T72] ___sys_sendmsg+0xee/0x170 [ 931.022290][ T72] __sys_sendmsg+0xcd/0x170 [ 931.022290][ T72] do_syscall_64+0xc6/0x1e0 [ 931.022290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.022290][ T72] [ 931.024649][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 931.024649][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 931.024649][ T72] ipv6_find_idev+0x102/0x170 [ 931.024649][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.024649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.024649][ T72] netlink_rcv_skb+0x130/0x360 [ 931.024649][ T72] netlink_unicast+0x449/0x710 [ 931.024649][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.024649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.024649][ T72] ___sys_sendmsg+0xee/0x170 [ 931.024649][ T72] __sys_sendmsg+0xcd/0x170 [ 931.024649][ T72] do_syscall_64+0xc6/0x1e0 [ 931.024649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.024649][ T72] [ 931.026599][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 931.026599][ T72] neigh_parms_alloc+0x1e5/0x510 [ 931.026599][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 931.026599][ T72] ipv6_find_idev+0x102/0x170 [ 931.026599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.026599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.026599][ T72] netlink_rcv_skb+0x130/0x360 [ 931.026599][ T72] netlink_unicast+0x449/0x710 [ 931.026599][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.026599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.026599][ T72] ___sys_sendmsg+0xee/0x170 [ 931.026599][ T72] __sys_sendmsg+0xcd/0x170 [ 931.026599][ T72] do_syscall_64+0xc6/0x1e0 [ 931.026599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.026599][ T72] [ 931.028676][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 931.029019][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 931.029019][ T72] netdev_get_by_index+0x5e/0x80 [ 931.029019][ T72] fib6_nh_init+0x3d8/0x15b0 [ 931.029019][ T72] ip6_route_info_create+0xf18/0x17d0 [ 931.029019][ T72] addrconf_f6i_alloc+0x244/0x410 [ 931.029019][ T72] ipv6_add_addr+0x411/0x2000 [ 931.029019][ T72] inet6_addr_add+0x30e/0xa40 [ 931.029019][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 931.029019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.029019][ T72] netlink_rcv_skb+0x130/0x360 [ 931.029019][ T72] netlink_unicast+0x449/0x710 [ 931.029019][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.029019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.029019][ T72] ___sys_sendmsg+0xee/0x170 [ 931.029019][ T72] __sys_sendmsg+0xcd/0x170 [ 931.029019][ T72] do_syscall_64+0xc6/0x1e0 [ 931.029019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.029019][ T72] [ 931.031448][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 931.031448][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 931.031448][ T72] ipv6_find_idev+0x102/0x170 [ 931.031448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.031448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.031448][ T72] netlink_rcv_skb+0x130/0x360 [ 931.031448][ T72] netlink_unicast+0x449/0x710 [ 931.031448][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.031448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.031448][ T72] ___sys_sendmsg+0xee/0x170 [ 931.031448][ T72] __sys_sendmsg+0xcd/0x170 [ 931.031448][ T72] do_syscall_64+0xc6/0x1e0 [ 931.031448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.031448][ T72] [ 931.033227][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 931.033227][ T72] neigh_parms_alloc+0x1e5/0x510 [ 931.033227][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 931.033227][ T72] ipv6_find_idev+0x102/0x170 [ 931.033227][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.033227][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.033227][ T72] netlink_rcv_skb+0x130/0x360 [ 931.033227][ T72] netlink_unicast+0x449/0x710 [ 931.033227][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.033227][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.033227][ T72] ___sys_sendmsg+0xee/0x170 [ 931.033227][ T72] __sys_sendmsg+0xcd/0x170 [ 931.033227][ T72] do_syscall_64+0xc6/0x1e0 [ 931.033227][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.033227][ T72] [ 931.035281][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 931.035563][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 931.035563][ T72] netdev_get_by_index+0x5e/0x80 [ 931.035563][ T72] fib6_nh_init+0x3d8/0x15b0 [ 931.035563][ T72] ip6_route_info_create+0xf18/0x17d0 [ 931.035563][ T72] addrconf_f6i_alloc+0x244/0x410 [ 931.035563][ T72] ipv6_add_addr+0x411/0x2000 [ 931.035563][ T72] inet6_addr_add+0x30e/0xa40 [ 931.035563][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 931.035563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.035563][ T72] netlink_rcv_skb+0x130/0x360 [ 931.035563][ T72] netlink_unicast+0x449/0x710 [ 931.035563][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.035563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.035563][ T72] ___sys_sendmsg+0xee/0x170 [ 931.035563][ T72] __sys_sendmsg+0xcd/0x170 [ 931.035563][ T72] do_syscall_64+0xc6/0x1e0 [ 931.035563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.035563][ T72] [ 931.037918][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 931.037918][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 931.037918][ T72] ipv6_find_idev+0x102/0x170 [ 931.037918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.037918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.037918][ T72] netlink_rcv_skb+0x130/0x360 [ 931.037918][ T72] netlink_unicast+0x449/0x710 [ 931.037918][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.037918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.037918][ T72] ___sys_sendmsg+0xee/0x170 [ 931.037918][ T72] __sys_sendmsg+0xcd/0x170 [ 931.037918][ T72] do_syscall_64+0xc6/0x1e0 [ 931.037918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.037918][ T72] [ 931.039746][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 931.039746][ T72] neigh_parms_alloc+0x1e5/0x510 [ 931.039746][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 931.039746][ T72] ipv6_find_idev+0x102/0x170 [ 931.039746][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 931.039746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 931.039746][ T72] netlink_rcv_skb+0x130/0x360 [ 931.039746][ T72] netlink_unicast+0x449/0x710 [ 931.039746][ T72] netlink_sendmsg+0x723/0xbe0 [ 931.039746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 931.039746][ T72] ___sys_sendmsg+0xee/0x170 [ 931.039746][ T72] __sys_sendmsg+0xcd/0x170 [ 931.039746][ T72] do_syscall_64+0xc6/0x1e0 [ 931.039746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 931.039746][ T72] [ 941.278897][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 941.279376][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 941.279376][ T72] netdev_get_by_index+0x5e/0x80 [ 941.279376][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.279376][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.279376][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.279376][ T72] ipv6_add_addr+0x411/0x2000 [ 941.279376][ T72] inet6_addr_add+0x30e/0xa40 [ 941.279376][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.279376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.279376][ T72] netlink_rcv_skb+0x130/0x360 [ 941.279376][ T72] netlink_unicast+0x449/0x710 [ 941.279376][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.279376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.279376][ T72] ___sys_sendmsg+0xee/0x170 [ 941.279376][ T72] __sys_sendmsg+0xcd/0x170 [ 941.279376][ T72] do_syscall_64+0xc6/0x1e0 [ 941.279376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.279376][ T72] [ 941.281613][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 941.281613][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.281613][ T72] ipv6_find_idev+0x102/0x170 [ 941.281613][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.281613][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.281613][ T72] netlink_rcv_skb+0x130/0x360 [ 941.281613][ T72] netlink_unicast+0x449/0x710 [ 941.281613][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.281613][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.281613][ T72] ___sys_sendmsg+0xee/0x170 [ 941.281613][ T72] __sys_sendmsg+0xcd/0x170 [ 941.281613][ T72] do_syscall_64+0xc6/0x1e0 [ 941.281613][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.281613][ T72] [ 941.283358][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 941.283358][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.283358][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.283358][ T72] ipv6_find_idev+0x102/0x170 [ 941.283358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.283358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.283358][ T72] netlink_rcv_skb+0x130/0x360 [ 941.283358][ T72] netlink_unicast+0x449/0x710 [ 941.283358][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.283358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.283358][ T72] ___sys_sendmsg+0xee/0x170 [ 941.283358][ T72] __sys_sendmsg+0xcd/0x170 [ 941.283358][ T72] do_syscall_64+0xc6/0x1e0 [ 941.283358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.283358][ T72] [ 941.285230][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 941.285520][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 941.285520][ T72] netdev_get_by_index+0x5e/0x80 [ 941.285520][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.285520][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.285520][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.285520][ T72] ipv6_add_addr+0x411/0x2000 [ 941.285520][ T72] inet6_addr_add+0x30e/0xa40 [ 941.285520][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.285520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.285520][ T72] netlink_rcv_skb+0x130/0x360 [ 941.285520][ T72] netlink_unicast+0x449/0x710 [ 941.285520][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.285520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.285520][ T72] ___sys_sendmsg+0xee/0x170 [ 941.285520][ T72] __sys_sendmsg+0xcd/0x170 [ 941.285520][ T72] do_syscall_64+0xc6/0x1e0 [ 941.285520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.285520][ T72] [ 941.287735][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 941.287735][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.287735][ T72] ipv6_find_idev+0x102/0x170 [ 941.287735][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.287735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.287735][ T72] netlink_rcv_skb+0x130/0x360 [ 941.287735][ T72] netlink_unicast+0x449/0x710 [ 941.287735][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.287735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.287735][ T72] ___sys_sendmsg+0xee/0x170 [ 941.287735][ T72] __sys_sendmsg+0xcd/0x170 [ 941.287735][ T72] do_syscall_64+0xc6/0x1e0 [ 941.287735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.287735][ T72] [ 941.289449][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 941.289449][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.289449][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.289449][ T72] ipv6_find_idev+0x102/0x170 [ 941.289449][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.289449][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.289449][ T72] netlink_rcv_skb+0x130/0x360 [ 941.289449][ T72] netlink_unicast+0x449/0x710 [ 941.289449][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.289449][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.289449][ T72] ___sys_sendmsg+0xee/0x170 [ 941.289449][ T72] __sys_sendmsg+0xcd/0x170 [ 941.289449][ T72] do_syscall_64+0xc6/0x1e0 [ 941.289449][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.289449][ T72] [ 941.291333][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 941.291618][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 941.291618][ T72] netdev_get_by_index+0x5e/0x80 [ 941.291618][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.291618][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.291618][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.291618][ T72] ipv6_add_addr+0x411/0x2000 [ 941.291618][ T72] inet6_addr_add+0x30e/0xa40 [ 941.291618][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.291618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.291618][ T72] netlink_rcv_skb+0x130/0x360 [ 941.291618][ T72] netlink_unicast+0x449/0x710 [ 941.291618][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.291618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.291618][ T72] ___sys_sendmsg+0xee/0x170 [ 941.291618][ T72] __sys_sendmsg+0xcd/0x170 [ 941.291618][ T72] do_syscall_64+0xc6/0x1e0 [ 941.291618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.291618][ T72] [ 941.293849][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 941.293849][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.293849][ T72] ipv6_find_idev+0x102/0x170 [ 941.293849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.293849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.293849][ T72] netlink_rcv_skb+0x130/0x360 [ 941.293849][ T72] netlink_unicast+0x449/0x710 [ 941.293849][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.293849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.293849][ T72] ___sys_sendmsg+0xee/0x170 [ 941.293849][ T72] __sys_sendmsg+0xcd/0x170 [ 941.293849][ T72] do_syscall_64+0xc6/0x1e0 [ 941.293849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.293849][ T72] [ 941.295554][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 941.295554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.295554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.295554][ T72] ipv6_find_idev+0x102/0x170 [ 941.295554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.295554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.295554][ T72] netlink_rcv_skb+0x130/0x360 [ 941.295554][ T72] netlink_unicast+0x449/0x710 [ 941.295554][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.295554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.295554][ T72] ___sys_sendmsg+0xee/0x170 [ 941.295554][ T72] __sys_sendmsg+0xcd/0x170 [ 941.295554][ T72] do_syscall_64+0xc6/0x1e0 [ 941.295554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.295554][ T72] [ 941.297428][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 941.297734][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 941.297734][ T72] netdev_get_by_index+0x5e/0x80 [ 941.297734][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.297734][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.297734][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.297734][ T72] ipv6_add_addr+0x411/0x2000 [ 941.297734][ T72] inet6_addr_add+0x30e/0xa40 [ 941.297734][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.297734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.297734][ T72] netlink_rcv_skb+0x130/0x360 [ 941.297734][ T72] netlink_unicast+0x449/0x710 [ 941.297734][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.297734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.297734][ T72] ___sys_sendmsg+0xee/0x170 [ 941.297734][ T72] __sys_sendmsg+0xcd/0x170 [ 941.297734][ T72] do_syscall_64+0xc6/0x1e0 [ 941.297734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.297734][ T72] [ 941.299947][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 941.299947][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.299947][ T72] ipv6_find_idev+0x102/0x170 [ 941.299947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.299947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.299947][ T72] netlink_rcv_skb+0x130/0x360 [ 941.299947][ T72] netlink_unicast+0x449/0x710 [ 941.299947][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.299947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.299947][ T72] ___sys_sendmsg+0xee/0x170 [ 941.299947][ T72] __sys_sendmsg+0xcd/0x170 [ 941.299947][ T72] do_syscall_64+0xc6/0x1e0 [ 941.299947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.299947][ T72] [ 941.301651][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 941.301651][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.301651][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.301651][ T72] ipv6_find_idev+0x102/0x170 [ 941.301651][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.301651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.301651][ T72] netlink_rcv_skb+0x130/0x360 [ 941.301651][ T72] netlink_unicast+0x449/0x710 [ 941.301651][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.301651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.301651][ T72] ___sys_sendmsg+0xee/0x170 [ 941.301651][ T72] __sys_sendmsg+0xcd/0x170 [ 941.301651][ T72] do_syscall_64+0xc6/0x1e0 [ 941.301651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.301651][ T72] [ 941.303964][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 941.304257][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 941.304257][ T72] netdev_get_by_index+0x5e/0x80 [ 941.304257][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.304257][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.304257][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.304257][ T72] ipv6_add_addr+0x411/0x2000 [ 941.304257][ T72] inet6_addr_add+0x30e/0xa40 [ 941.304257][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.304257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.304257][ T72] netlink_rcv_skb+0x130/0x360 [ 941.304257][ T72] netlink_unicast+0x449/0x710 [ 941.304257][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.304257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.304257][ T72] ___sys_sendmsg+0xee/0x170 [ 941.304257][ T72] __sys_sendmsg+0xcd/0x170 [ 941.304257][ T72] do_syscall_64+0xc6/0x1e0 [ 941.304257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.304257][ T72] [ 941.306495][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 941.306495][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.306495][ T72] ipv6_find_idev+0x102/0x170 [ 941.306495][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.306495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.306495][ T72] netlink_rcv_skb+0x130/0x360 [ 941.306495][ T72] netlink_unicast+0x449/0x710 [ 941.306495][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.306495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.306495][ T72] ___sys_sendmsg+0xee/0x170 [ 941.306495][ T72] __sys_sendmsg+0xcd/0x170 [ 941.306495][ T72] do_syscall_64+0xc6/0x1e0 [ 941.306495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.306495][ T72] [ 941.308202][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 941.308202][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.308202][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.308202][ T72] ipv6_find_idev+0x102/0x170 [ 941.308202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.308202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.308202][ T72] netlink_rcv_skb+0x130/0x360 [ 941.308202][ T72] netlink_unicast+0x449/0x710 [ 941.308202][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.308202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.308202][ T72] ___sys_sendmsg+0xee/0x170 [ 941.308202][ T72] __sys_sendmsg+0xcd/0x170 [ 941.308202][ T72] do_syscall_64+0xc6/0x1e0 [ 941.308202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.308202][ T72] [ 941.310119][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 941.310411][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 941.310411][ T72] netdev_get_by_index+0x5e/0x80 [ 941.310411][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.310411][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.310411][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.310411][ T72] ipv6_add_addr+0x411/0x2000 [ 941.310411][ T72] inet6_addr_add+0x30e/0xa40 [ 941.310411][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.310411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.310411][ T72] netlink_rcv_skb+0x130/0x360 [ 941.310411][ T72] netlink_unicast+0x449/0x710 [ 941.310411][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.310411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.310411][ T72] ___sys_sendmsg+0xee/0x170 [ 941.310411][ T72] __sys_sendmsg+0xcd/0x170 [ 941.310411][ T72] do_syscall_64+0xc6/0x1e0 [ 941.310411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.310411][ T72] [ 941.312764][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 941.312764][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.312764][ T72] ipv6_find_idev+0x102/0x170 [ 941.312764][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.312764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.312764][ T72] netlink_rcv_skb+0x130/0x360 [ 941.312764][ T72] netlink_unicast+0x449/0x710 [ 941.312764][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.312764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.312764][ T72] ___sys_sendmsg+0xee/0x170 [ 941.312764][ T72] __sys_sendmsg+0xcd/0x170 [ 941.312764][ T72] do_syscall_64+0xc6/0x1e0 [ 941.312764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.312764][ T72] [ 941.314647][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 941.314647][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.314647][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.314647][ T72] ipv6_find_idev+0x102/0x170 [ 941.314647][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.314647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.314647][ T72] netlink_rcv_skb+0x130/0x360 [ 941.314647][ T72] netlink_unicast+0x449/0x710 [ 941.314647][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.314647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.314647][ T72] ___sys_sendmsg+0xee/0x170 [ 941.314647][ T72] __sys_sendmsg+0xcd/0x170 [ 941.314647][ T72] do_syscall_64+0xc6/0x1e0 [ 941.314647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.314647][ T72] [ 941.316815][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 941.317110][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 941.317110][ T72] netdev_get_by_index+0x5e/0x80 [ 941.317110][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.317110][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.317110][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.317110][ T72] ipv6_add_addr+0x411/0x2000 [ 941.317110][ T72] inet6_addr_add+0x30e/0xa40 [ 941.317110][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.317110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.317110][ T72] netlink_rcv_skb+0x130/0x360 [ 941.317110][ T72] netlink_unicast+0x449/0x710 [ 941.317110][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.317110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.317110][ T72] ___sys_sendmsg+0xee/0x170 [ 941.317110][ T72] __sys_sendmsg+0xcd/0x170 [ 941.317110][ T72] do_syscall_64+0xc6/0x1e0 [ 941.317110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.317110][ T72] [ 941.319557][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 941.319557][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.319557][ T72] ipv6_find_idev+0x102/0x170 [ 941.319557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.319557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.319557][ T72] netlink_rcv_skb+0x130/0x360 [ 941.319557][ T72] netlink_unicast+0x449/0x710 [ 941.319557][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.319557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.319557][ T72] ___sys_sendmsg+0xee/0x170 [ 941.319557][ T72] __sys_sendmsg+0xcd/0x170 [ 941.319557][ T72] do_syscall_64+0xc6/0x1e0 [ 941.319557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.319557][ T72] [ 941.321443][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 941.321443][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.321443][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.321443][ T72] ipv6_find_idev+0x102/0x170 [ 941.321443][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.321443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.321443][ T72] netlink_rcv_skb+0x130/0x360 [ 941.321443][ T72] netlink_unicast+0x449/0x710 [ 941.321443][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.321443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.321443][ T72] ___sys_sendmsg+0xee/0x170 [ 941.321443][ T72] __sys_sendmsg+0xcd/0x170 [ 941.321443][ T72] do_syscall_64+0xc6/0x1e0 [ 941.321443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.321443][ T72] [ 941.323522][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 941.323868][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 941.323868][ T72] netdev_get_by_index+0x5e/0x80 [ 941.323868][ T72] fib6_nh_init+0x3d8/0x15b0 [ 941.323868][ T72] ip6_route_info_create+0xf18/0x17d0 [ 941.323868][ T72] addrconf_f6i_alloc+0x244/0x410 [ 941.323868][ T72] ipv6_add_addr+0x411/0x2000 [ 941.323868][ T72] inet6_addr_add+0x30e/0xa40 [ 941.323868][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 941.323868][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.323868][ T72] netlink_rcv_skb+0x130/0x360 [ 941.323868][ T72] netlink_unicast+0x449/0x710 [ 941.323868][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.323868][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.323868][ T72] ___sys_sendmsg+0xee/0x170 [ 941.323868][ T72] __sys_sendmsg+0xcd/0x170 [ 941.323868][ T72] do_syscall_64+0xc6/0x1e0 [ 941.323868][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.323868][ T72] [ 941.326259][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 941.326259][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 941.326259][ T72] ipv6_find_idev+0x102/0x170 [ 941.326259][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.326259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.326259][ T72] netlink_rcv_skb+0x130/0x360 [ 941.326259][ T72] netlink_unicast+0x449/0x710 [ 941.326259][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.326259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.326259][ T72] ___sys_sendmsg+0xee/0x170 [ 941.326259][ T72] __sys_sendmsg+0xcd/0x170 [ 941.326259][ T72] do_syscall_64+0xc6/0x1e0 [ 941.326259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.326259][ T72] [ 941.328210][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 941.328210][ T72] neigh_parms_alloc+0x1e5/0x510 [ 941.328210][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 941.328210][ T72] ipv6_find_idev+0x102/0x170 [ 941.328210][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 941.328210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 941.328210][ T72] netlink_rcv_skb+0x130/0x360 [ 941.328210][ T72] netlink_unicast+0x449/0x710 [ 941.328210][ T72] netlink_sendmsg+0x723/0xbe0 [ 941.328210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 941.328210][ T72] ___sys_sendmsg+0xee/0x170 [ 941.328210][ T72] __sys_sendmsg+0xcd/0x170 [ 941.328210][ T72] do_syscall_64+0xc6/0x1e0 [ 941.328210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 941.328210][ T72] [ 951.566855][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 951.567335][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 951.567335][ T72] netdev_get_by_index+0x5e/0x80 [ 951.567335][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.567335][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.567335][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.567335][ T72] ipv6_add_addr+0x411/0x2000 [ 951.567335][ T72] inet6_addr_add+0x30e/0xa40 [ 951.567335][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.567335][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.567335][ T72] netlink_rcv_skb+0x130/0x360 [ 951.567335][ T72] netlink_unicast+0x449/0x710 [ 951.567335][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.567335][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.567335][ T72] ___sys_sendmsg+0xee/0x170 [ 951.567335][ T72] __sys_sendmsg+0xcd/0x170 [ 951.567335][ T72] do_syscall_64+0xc6/0x1e0 [ 951.567335][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.567335][ T72] [ 951.569318][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 951.569318][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.569318][ T72] ipv6_find_idev+0x102/0x170 [ 951.569318][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.569318][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.569318][ T72] netlink_rcv_skb+0x130/0x360 [ 951.569318][ T72] netlink_unicast+0x449/0x710 [ 951.569318][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.569318][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.569318][ T72] ___sys_sendmsg+0xee/0x170 [ 951.569318][ T72] __sys_sendmsg+0xcd/0x170 [ 951.569318][ T72] do_syscall_64+0xc6/0x1e0 [ 951.569318][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.569318][ T72] [ 951.570857][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 951.570857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.570857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.570857][ T72] ipv6_find_idev+0x102/0x170 [ 951.570857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.570857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.570857][ T72] netlink_rcv_skb+0x130/0x360 [ 951.570857][ T72] netlink_unicast+0x449/0x710 [ 951.570857][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.570857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.570857][ T72] ___sys_sendmsg+0xee/0x170 [ 951.570857][ T72] __sys_sendmsg+0xcd/0x170 [ 951.570857][ T72] do_syscall_64+0xc6/0x1e0 [ 951.570857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.570857][ T72] [ 951.572557][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 951.572839][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 951.572839][ T72] netdev_get_by_index+0x5e/0x80 [ 951.572839][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.572839][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.572839][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.572839][ T72] ipv6_add_addr+0x411/0x2000 [ 951.572839][ T72] inet6_addr_add+0x30e/0xa40 [ 951.572839][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.572839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.572839][ T72] netlink_rcv_skb+0x130/0x360 [ 951.572839][ T72] netlink_unicast+0x449/0x710 [ 951.572839][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.572839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.572839][ T72] ___sys_sendmsg+0xee/0x170 [ 951.572839][ T72] __sys_sendmsg+0xcd/0x170 [ 951.572839][ T72] do_syscall_64+0xc6/0x1e0 [ 951.572839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.572839][ T72] [ 951.574824][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 951.574824][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.574824][ T72] ipv6_find_idev+0x102/0x170 [ 951.574824][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.574824][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.574824][ T72] netlink_rcv_skb+0x130/0x360 [ 951.574824][ T72] netlink_unicast+0x449/0x710 [ 951.574824][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.574824][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.574824][ T72] ___sys_sendmsg+0xee/0x170 [ 951.574824][ T72] __sys_sendmsg+0xcd/0x170 [ 951.574824][ T72] do_syscall_64+0xc6/0x1e0 [ 951.574824][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.574824][ T72] [ 951.576341][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 951.576341][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.576341][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.576341][ T72] ipv6_find_idev+0x102/0x170 [ 951.576341][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.576341][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.576341][ T72] netlink_rcv_skb+0x130/0x360 [ 951.576341][ T72] netlink_unicast+0x449/0x710 [ 951.576341][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.576341][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.576341][ T72] ___sys_sendmsg+0xee/0x170 [ 951.576341][ T72] __sys_sendmsg+0xcd/0x170 [ 951.576341][ T72] do_syscall_64+0xc6/0x1e0 [ 951.576341][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.576341][ T72] [ 951.578021][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 951.578291][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 951.578291][ T72] netdev_get_by_index+0x5e/0x80 [ 951.578291][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.578291][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.578291][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.578291][ T72] ipv6_add_addr+0x411/0x2000 [ 951.578291][ T72] inet6_addr_add+0x30e/0xa40 [ 951.578291][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.578291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.578291][ T72] netlink_rcv_skb+0x130/0x360 [ 951.578291][ T72] netlink_unicast+0x449/0x710 [ 951.578291][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.578291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.578291][ T72] ___sys_sendmsg+0xee/0x170 [ 951.578291][ T72] __sys_sendmsg+0xcd/0x170 [ 951.578291][ T72] do_syscall_64+0xc6/0x1e0 [ 951.578291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.578291][ T72] [ 951.580268][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 951.580268][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.580268][ T72] ipv6_find_idev+0x102/0x170 [ 951.580268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.580268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.580268][ T72] netlink_rcv_skb+0x130/0x360 [ 951.580268][ T72] netlink_unicast+0x449/0x710 [ 951.580268][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.580268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.580268][ T72] ___sys_sendmsg+0xee/0x170 [ 951.580268][ T72] __sys_sendmsg+0xcd/0x170 [ 951.580268][ T72] do_syscall_64+0xc6/0x1e0 [ 951.580268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.580268][ T72] [ 951.581778][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 951.581778][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.581778][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.581778][ T72] ipv6_find_idev+0x102/0x170 [ 951.581778][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.581778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.581778][ T72] netlink_rcv_skb+0x130/0x360 [ 951.581778][ T72] netlink_unicast+0x449/0x710 [ 951.581778][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.581778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.581778][ T72] ___sys_sendmsg+0xee/0x170 [ 951.581778][ T72] __sys_sendmsg+0xcd/0x170 [ 951.581778][ T72] do_syscall_64+0xc6/0x1e0 [ 951.581778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.581778][ T72] [ 951.583450][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 951.583743][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 951.583743][ T72] netdev_get_by_index+0x5e/0x80 [ 951.583743][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.583743][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.583743][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.583743][ T72] ipv6_add_addr+0x411/0x2000 [ 951.583743][ T72] inet6_addr_add+0x30e/0xa40 [ 951.583743][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.583743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.583743][ T72] netlink_rcv_skb+0x130/0x360 [ 951.583743][ T72] netlink_unicast+0x449/0x710 [ 951.583743][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.583743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.583743][ T72] ___sys_sendmsg+0xee/0x170 [ 951.583743][ T72] __sys_sendmsg+0xcd/0x170 [ 951.583743][ T72] do_syscall_64+0xc6/0x1e0 [ 951.583743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.583743][ T72] [ 951.585709][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 951.585709][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.585709][ T72] ipv6_find_idev+0x102/0x170 [ 951.585709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.585709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.585709][ T72] netlink_rcv_skb+0x130/0x360 [ 951.585709][ T72] netlink_unicast+0x449/0x710 [ 951.585709][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.585709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.585709][ T72] ___sys_sendmsg+0xee/0x170 [ 951.585709][ T72] __sys_sendmsg+0xcd/0x170 [ 951.585709][ T72] do_syscall_64+0xc6/0x1e0 [ 951.585709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.585709][ T72] [ 951.587243][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 951.587243][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.587243][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.587243][ T72] ipv6_find_idev+0x102/0x170 [ 951.587243][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.587243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.587243][ T72] netlink_rcv_skb+0x130/0x360 [ 951.587243][ T72] netlink_unicast+0x449/0x710 [ 951.587243][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.587243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.587243][ T72] ___sys_sendmsg+0xee/0x170 [ 951.587243][ T72] __sys_sendmsg+0xcd/0x170 [ 951.587243][ T72] do_syscall_64+0xc6/0x1e0 [ 951.587243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.587243][ T72] [ 951.588920][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 951.589187][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 951.589187][ T72] netdev_get_by_index+0x5e/0x80 [ 951.589187][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.589187][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.589187][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.589187][ T72] ipv6_add_addr+0x411/0x2000 [ 951.589187][ T72] inet6_addr_add+0x30e/0xa40 [ 951.589187][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.589187][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.589187][ T72] netlink_rcv_skb+0x130/0x360 [ 951.589187][ T72] netlink_unicast+0x449/0x710 [ 951.589187][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.589187][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.589187][ T72] ___sys_sendmsg+0xee/0x170 [ 951.589187][ T72] __sys_sendmsg+0xcd/0x170 [ 951.589187][ T72] do_syscall_64+0xc6/0x1e0 [ 951.589187][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.589187][ T72] [ 951.591166][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 951.591166][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.591166][ T72] ipv6_find_idev+0x102/0x170 [ 951.591166][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.591166][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.591166][ T72] netlink_rcv_skb+0x130/0x360 [ 951.591166][ T72] netlink_unicast+0x449/0x710 [ 951.591166][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.591166][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.591166][ T72] ___sys_sendmsg+0xee/0x170 [ 951.591166][ T72] __sys_sendmsg+0xcd/0x170 [ 951.591166][ T72] do_syscall_64+0xc6/0x1e0 [ 951.591166][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.591166][ T72] [ 951.592761][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 951.592761][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.592761][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.592761][ T72] ipv6_find_idev+0x102/0x170 [ 951.592761][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.592761][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.592761][ T72] netlink_rcv_skb+0x130/0x360 [ 951.592761][ T72] netlink_unicast+0x449/0x710 [ 951.592761][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.592761][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.592761][ T72] ___sys_sendmsg+0xee/0x170 [ 951.592761][ T72] __sys_sendmsg+0xcd/0x170 [ 951.592761][ T72] do_syscall_64+0xc6/0x1e0 [ 951.592761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.592761][ T72] [ 951.594768][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 951.595207][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 951.595207][ T72] netdev_get_by_index+0x5e/0x80 [ 951.595207][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.595207][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.595207][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.595207][ T72] ipv6_add_addr+0x411/0x2000 [ 951.595207][ T72] inet6_addr_add+0x30e/0xa40 [ 951.595207][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.595207][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.595207][ T72] netlink_rcv_skb+0x130/0x360 [ 951.595207][ T72] netlink_unicast+0x449/0x710 [ 951.595207][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.595207][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.595207][ T72] ___sys_sendmsg+0xee/0x170 [ 951.595207][ T72] __sys_sendmsg+0xcd/0x170 [ 951.595207][ T72] do_syscall_64+0xc6/0x1e0 [ 951.595207][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.595207][ T72] [ 951.598377][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 951.598377][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.598377][ T72] ipv6_find_idev+0x102/0x170 [ 951.598377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.598377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.598377][ T72] netlink_rcv_skb+0x130/0x360 [ 951.598377][ T72] netlink_unicast+0x449/0x710 [ 951.598377][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.598377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.598377][ T72] ___sys_sendmsg+0xee/0x170 [ 951.598377][ T72] __sys_sendmsg+0xcd/0x170 [ 951.598377][ T72] do_syscall_64+0xc6/0x1e0 [ 951.598377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.598377][ T72] [ 951.600090][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 951.600090][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.600090][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.600090][ T72] ipv6_find_idev+0x102/0x170 [ 951.600090][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.600090][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.600090][ T72] netlink_rcv_skb+0x130/0x360 [ 951.600090][ T72] netlink_unicast+0x449/0x710 [ 951.600090][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.600090][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.600090][ T72] ___sys_sendmsg+0xee/0x170 [ 951.600090][ T72] __sys_sendmsg+0xcd/0x170 [ 951.600090][ T72] do_syscall_64+0xc6/0x1e0 [ 951.600090][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.600090][ T72] [ 951.602011][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 951.602282][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 951.602282][ T72] netdev_get_by_index+0x5e/0x80 [ 951.602282][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.602282][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.602282][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.602282][ T72] ipv6_add_addr+0x411/0x2000 [ 951.602282][ T72] inet6_addr_add+0x30e/0xa40 [ 951.602282][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.602282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.602282][ T72] netlink_rcv_skb+0x130/0x360 [ 951.602282][ T72] netlink_unicast+0x449/0x710 [ 951.602282][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.602282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.602282][ T72] ___sys_sendmsg+0xee/0x170 [ 951.602282][ T72] __sys_sendmsg+0xcd/0x170 [ 951.602282][ T72] do_syscall_64+0xc6/0x1e0 [ 951.602282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.602282][ T72] [ 951.604969][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 951.604969][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.604969][ T72] ipv6_find_idev+0x102/0x170 [ 951.604969][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.604969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.604969][ T72] netlink_rcv_skb+0x130/0x360 [ 951.604969][ T72] netlink_unicast+0x449/0x710 [ 951.604969][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.604969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.604969][ T72] ___sys_sendmsg+0xee/0x170 [ 951.604969][ T72] __sys_sendmsg+0xcd/0x170 [ 951.604969][ T72] do_syscall_64+0xc6/0x1e0 [ 951.604969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.604969][ T72] [ 951.606713][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 951.606713][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.606713][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.606713][ T72] ipv6_find_idev+0x102/0x170 [ 951.606713][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.606713][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.606713][ T72] netlink_rcv_skb+0x130/0x360 [ 951.606713][ T72] netlink_unicast+0x449/0x710 [ 951.606713][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.606713][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.606713][ T72] ___sys_sendmsg+0xee/0x170 [ 951.606713][ T72] __sys_sendmsg+0xcd/0x170 [ 951.606713][ T72] do_syscall_64+0xc6/0x1e0 [ 951.606713][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.606713][ T72] [ 951.608682][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 951.608998][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 951.608998][ T72] netdev_get_by_index+0x5e/0x80 [ 951.608998][ T72] fib6_nh_init+0x3d8/0x15b0 [ 951.608998][ T72] ip6_route_info_create+0xf18/0x17d0 [ 951.608998][ T72] addrconf_f6i_alloc+0x244/0x410 [ 951.608998][ T72] ipv6_add_addr+0x411/0x2000 [ 951.608998][ T72] inet6_addr_add+0x30e/0xa40 [ 951.608998][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 951.608998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.608998][ T72] netlink_rcv_skb+0x130/0x360 [ 951.608998][ T72] netlink_unicast+0x449/0x710 [ 951.608998][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.608998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.608998][ T72] ___sys_sendmsg+0xee/0x170 [ 951.608998][ T72] __sys_sendmsg+0xcd/0x170 [ 951.608998][ T72] do_syscall_64+0xc6/0x1e0 [ 951.608998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.608998][ T72] [ 951.611176][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 951.611176][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 951.611176][ T72] ipv6_find_idev+0x102/0x170 [ 951.611176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.611176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.611176][ T72] netlink_rcv_skb+0x130/0x360 [ 951.611176][ T72] netlink_unicast+0x449/0x710 [ 951.611176][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.611176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.611176][ T72] ___sys_sendmsg+0xee/0x170 [ 951.611176][ T72] __sys_sendmsg+0xcd/0x170 [ 951.611176][ T72] do_syscall_64+0xc6/0x1e0 [ 951.611176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.611176][ T72] [ 951.612873][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 951.612873][ T72] neigh_parms_alloc+0x1e5/0x510 [ 951.612873][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 951.612873][ T72] ipv6_find_idev+0x102/0x170 [ 951.612873][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 951.612873][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 951.612873][ T72] netlink_rcv_skb+0x130/0x360 [ 951.612873][ T72] netlink_unicast+0x449/0x710 [ 951.612873][ T72] netlink_sendmsg+0x723/0xbe0 [ 951.612873][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 951.612873][ T72] ___sys_sendmsg+0xee/0x170 [ 951.612873][ T72] __sys_sendmsg+0xcd/0x170 [ 951.612873][ T72] do_syscall_64+0xc6/0x1e0 [ 951.612873][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 951.612873][ T72] [ 961.854910][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 961.855341][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 961.855341][ T72] netdev_get_by_index+0x5e/0x80 [ 961.855341][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.855341][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.855341][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.855341][ T72] ipv6_add_addr+0x411/0x2000 [ 961.855341][ T72] inet6_addr_add+0x30e/0xa40 [ 961.855341][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.855341][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.855341][ T72] netlink_rcv_skb+0x130/0x360 [ 961.855341][ T72] netlink_unicast+0x449/0x710 [ 961.855341][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.855341][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.855341][ T72] ___sys_sendmsg+0xee/0x170 [ 961.855341][ T72] __sys_sendmsg+0xcd/0x170 [ 961.855341][ T72] do_syscall_64+0xc6/0x1e0 [ 961.855341][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.855341][ T72] [ 961.857577][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 961.857577][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.857577][ T72] ipv6_find_idev+0x102/0x170 [ 961.857577][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.857577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.857577][ T72] netlink_rcv_skb+0x130/0x360 [ 961.857577][ T72] netlink_unicast+0x449/0x710 [ 961.857577][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.857577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.857577][ T72] ___sys_sendmsg+0xee/0x170 [ 961.857577][ T72] __sys_sendmsg+0xcd/0x170 [ 961.857577][ T72] do_syscall_64+0xc6/0x1e0 [ 961.857577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.857577][ T72] [ 961.859313][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 961.859313][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.859313][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.859313][ T72] ipv6_find_idev+0x102/0x170 [ 961.859313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.859313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.859313][ T72] netlink_rcv_skb+0x130/0x360 [ 961.859313][ T72] netlink_unicast+0x449/0x710 [ 961.859313][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.859313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.859313][ T72] ___sys_sendmsg+0xee/0x170 [ 961.859313][ T72] __sys_sendmsg+0xcd/0x170 [ 961.859313][ T72] do_syscall_64+0xc6/0x1e0 [ 961.859313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.859313][ T72] [ 961.861186][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 961.861475][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 961.861475][ T72] netdev_get_by_index+0x5e/0x80 [ 961.861475][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.861475][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.861475][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.861475][ T72] ipv6_add_addr+0x411/0x2000 [ 961.861475][ T72] inet6_addr_add+0x30e/0xa40 [ 961.861475][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.861475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.861475][ T72] netlink_rcv_skb+0x130/0x360 [ 961.861475][ T72] netlink_unicast+0x449/0x710 [ 961.861475][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.861475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.861475][ T72] ___sys_sendmsg+0xee/0x170 [ 961.861475][ T72] __sys_sendmsg+0xcd/0x170 [ 961.861475][ T72] do_syscall_64+0xc6/0x1e0 [ 961.861475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.861475][ T72] [ 961.863681][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 961.863681][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.863681][ T72] ipv6_find_idev+0x102/0x170 [ 961.863681][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.863681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.863681][ T72] netlink_rcv_skb+0x130/0x360 [ 961.863681][ T72] netlink_unicast+0x449/0x710 [ 961.863681][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.863681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.863681][ T72] ___sys_sendmsg+0xee/0x170 [ 961.863681][ T72] __sys_sendmsg+0xcd/0x170 [ 961.863681][ T72] do_syscall_64+0xc6/0x1e0 [ 961.863681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.863681][ T72] [ 961.865388][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 961.865388][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.865388][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.865388][ T72] ipv6_find_idev+0x102/0x170 [ 961.865388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.865388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.865388][ T72] netlink_rcv_skb+0x130/0x360 [ 961.865388][ T72] netlink_unicast+0x449/0x710 [ 961.865388][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.865388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.865388][ T72] ___sys_sendmsg+0xee/0x170 [ 961.865388][ T72] __sys_sendmsg+0xcd/0x170 [ 961.865388][ T72] do_syscall_64+0xc6/0x1e0 [ 961.865388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.865388][ T72] [ 961.867261][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 961.867545][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 961.867545][ T72] netdev_get_by_index+0x5e/0x80 [ 961.867545][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.867545][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.867545][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.867545][ T72] ipv6_add_addr+0x411/0x2000 [ 961.867545][ T72] inet6_addr_add+0x30e/0xa40 [ 961.867545][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.867545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.867545][ T72] netlink_rcv_skb+0x130/0x360 [ 961.867545][ T72] netlink_unicast+0x449/0x710 [ 961.867545][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.867545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.867545][ T72] ___sys_sendmsg+0xee/0x170 [ 961.867545][ T72] __sys_sendmsg+0xcd/0x170 [ 961.867545][ T72] do_syscall_64+0xc6/0x1e0 [ 961.867545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.867545][ T72] [ 961.869751][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 961.869751][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.869751][ T72] ipv6_find_idev+0x102/0x170 [ 961.869751][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.869751][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.869751][ T72] netlink_rcv_skb+0x130/0x360 [ 961.869751][ T72] netlink_unicast+0x449/0x710 [ 961.869751][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.869751][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.869751][ T72] ___sys_sendmsg+0xee/0x170 [ 961.869751][ T72] __sys_sendmsg+0xcd/0x170 [ 961.869751][ T72] do_syscall_64+0xc6/0x1e0 [ 961.869751][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.869751][ T72] [ 961.871462][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 961.871462][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.871462][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.871462][ T72] ipv6_find_idev+0x102/0x170 [ 961.871462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.871462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.871462][ T72] netlink_rcv_skb+0x130/0x360 [ 961.871462][ T72] netlink_unicast+0x449/0x710 [ 961.871462][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.871462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.871462][ T72] ___sys_sendmsg+0xee/0x170 [ 961.871462][ T72] __sys_sendmsg+0xcd/0x170 [ 961.871462][ T72] do_syscall_64+0xc6/0x1e0 [ 961.871462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.871462][ T72] [ 961.873341][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 961.873630][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 961.873630][ T72] netdev_get_by_index+0x5e/0x80 [ 961.873630][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.873630][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.873630][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.873630][ T72] ipv6_add_addr+0x411/0x2000 [ 961.873630][ T72] inet6_addr_add+0x30e/0xa40 [ 961.873630][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.873630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.873630][ T72] netlink_rcv_skb+0x130/0x360 [ 961.873630][ T72] netlink_unicast+0x449/0x710 [ 961.873630][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.873630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.873630][ T72] ___sys_sendmsg+0xee/0x170 [ 961.873630][ T72] __sys_sendmsg+0xcd/0x170 [ 961.873630][ T72] do_syscall_64+0xc6/0x1e0 [ 961.873630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.873630][ T72] [ 961.875842][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 961.875842][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.875842][ T72] ipv6_find_idev+0x102/0x170 [ 961.875842][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.875842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.875842][ T72] netlink_rcv_skb+0x130/0x360 [ 961.875842][ T72] netlink_unicast+0x449/0x710 [ 961.875842][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.875842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.875842][ T72] ___sys_sendmsg+0xee/0x170 [ 961.875842][ T72] __sys_sendmsg+0xcd/0x170 [ 961.875842][ T72] do_syscall_64+0xc6/0x1e0 [ 961.875842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.875842][ T72] [ 961.877558][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 961.877558][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.877558][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.877558][ T72] ipv6_find_idev+0x102/0x170 [ 961.877558][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.877558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.877558][ T72] netlink_rcv_skb+0x130/0x360 [ 961.877558][ T72] netlink_unicast+0x449/0x710 [ 961.877558][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.877558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.877558][ T72] ___sys_sendmsg+0xee/0x170 [ 961.877558][ T72] __sys_sendmsg+0xcd/0x170 [ 961.877558][ T72] do_syscall_64+0xc6/0x1e0 [ 961.877558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.877558][ T72] [ 961.879843][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 961.880128][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 961.880128][ T72] netdev_get_by_index+0x5e/0x80 [ 961.880128][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.880128][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.880128][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.880128][ T72] ipv6_add_addr+0x411/0x2000 [ 961.880128][ T72] inet6_addr_add+0x30e/0xa40 [ 961.880128][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.880128][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.880128][ T72] netlink_rcv_skb+0x130/0x360 [ 961.880128][ T72] netlink_unicast+0x449/0x710 [ 961.880128][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.880128][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.880128][ T72] ___sys_sendmsg+0xee/0x170 [ 961.880128][ T72] __sys_sendmsg+0xcd/0x170 [ 961.880128][ T72] do_syscall_64+0xc6/0x1e0 [ 961.880128][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.880128][ T72] [ 961.882345][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 961.882345][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.882345][ T72] ipv6_find_idev+0x102/0x170 [ 961.882345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.882345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.882345][ T72] netlink_rcv_skb+0x130/0x360 [ 961.882345][ T72] netlink_unicast+0x449/0x710 [ 961.882345][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.882345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.882345][ T72] ___sys_sendmsg+0xee/0x170 [ 961.882345][ T72] __sys_sendmsg+0xcd/0x170 [ 961.882345][ T72] do_syscall_64+0xc6/0x1e0 [ 961.882345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.882345][ T72] [ 961.884058][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 961.884058][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.884058][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.884058][ T72] ipv6_find_idev+0x102/0x170 [ 961.884058][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.884058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.884058][ T72] netlink_rcv_skb+0x130/0x360 [ 961.884058][ T72] netlink_unicast+0x449/0x710 [ 961.884058][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.884058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.884058][ T72] ___sys_sendmsg+0xee/0x170 [ 961.884058][ T72] __sys_sendmsg+0xcd/0x170 [ 961.884058][ T72] do_syscall_64+0xc6/0x1e0 [ 961.884058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.884058][ T72] [ 961.885978][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 961.886271][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 961.886271][ T72] netdev_get_by_index+0x5e/0x80 [ 961.886271][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.886271][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.886271][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.886271][ T72] ipv6_add_addr+0x411/0x2000 [ 961.886271][ T72] inet6_addr_add+0x30e/0xa40 [ 961.886271][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.886271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.886271][ T72] netlink_rcv_skb+0x130/0x360 [ 961.886271][ T72] netlink_unicast+0x449/0x710 [ 961.886271][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.886271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.886271][ T72] ___sys_sendmsg+0xee/0x170 [ 961.886271][ T72] __sys_sendmsg+0xcd/0x170 [ 961.886271][ T72] do_syscall_64+0xc6/0x1e0 [ 961.886271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.886271][ T72] [ 961.888618][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 961.888618][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.888618][ T72] ipv6_find_idev+0x102/0x170 [ 961.888618][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.888618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.888618][ T72] netlink_rcv_skb+0x130/0x360 [ 961.888618][ T72] netlink_unicast+0x449/0x710 [ 961.888618][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.888618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.888618][ T72] ___sys_sendmsg+0xee/0x170 [ 961.888618][ T72] __sys_sendmsg+0xcd/0x170 [ 961.888618][ T72] do_syscall_64+0xc6/0x1e0 [ 961.888618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.888618][ T72] [ 961.890569][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 961.890569][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.890569][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.890569][ T72] ipv6_find_idev+0x102/0x170 [ 961.890569][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.890569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.890569][ T72] netlink_rcv_skb+0x130/0x360 [ 961.890569][ T72] netlink_unicast+0x449/0x710 [ 961.890569][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.890569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.890569][ T72] ___sys_sendmsg+0xee/0x170 [ 961.890569][ T72] __sys_sendmsg+0xcd/0x170 [ 961.890569][ T72] do_syscall_64+0xc6/0x1e0 [ 961.890569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.890569][ T72] [ 961.892665][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 961.893007][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 961.893007][ T72] netdev_get_by_index+0x5e/0x80 [ 961.893007][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.893007][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.893007][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.893007][ T72] ipv6_add_addr+0x411/0x2000 [ 961.893007][ T72] inet6_addr_add+0x30e/0xa40 [ 961.893007][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.893007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.893007][ T72] netlink_rcv_skb+0x130/0x360 [ 961.893007][ T72] netlink_unicast+0x449/0x710 [ 961.893007][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.893007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.893007][ T72] ___sys_sendmsg+0xee/0x170 [ 961.893007][ T72] __sys_sendmsg+0xcd/0x170 [ 961.893007][ T72] do_syscall_64+0xc6/0x1e0 [ 961.893007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.893007][ T72] [ 961.895405][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 961.895405][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.895405][ T72] ipv6_find_idev+0x102/0x170 [ 961.895405][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.895405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.895405][ T72] netlink_rcv_skb+0x130/0x360 [ 961.895405][ T72] netlink_unicast+0x449/0x710 [ 961.895405][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.895405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.895405][ T72] ___sys_sendmsg+0xee/0x170 [ 961.895405][ T72] __sys_sendmsg+0xcd/0x170 [ 961.895405][ T72] do_syscall_64+0xc6/0x1e0 [ 961.895405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.895405][ T72] [ 961.897298][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 961.897298][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.897298][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.897298][ T72] ipv6_find_idev+0x102/0x170 [ 961.897298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.897298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.897298][ T72] netlink_rcv_skb+0x130/0x360 [ 961.897298][ T72] netlink_unicast+0x449/0x710 [ 961.897298][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.897298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.897298][ T72] ___sys_sendmsg+0xee/0x170 [ 961.897298][ T72] __sys_sendmsg+0xcd/0x170 [ 961.897298][ T72] do_syscall_64+0xc6/0x1e0 [ 961.897298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.897298][ T72] [ 961.899395][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 961.899694][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 961.899694][ T72] netdev_get_by_index+0x5e/0x80 [ 961.899694][ T72] fib6_nh_init+0x3d8/0x15b0 [ 961.899694][ T72] ip6_route_info_create+0xf18/0x17d0 [ 961.899694][ T72] addrconf_f6i_alloc+0x244/0x410 [ 961.899694][ T72] ipv6_add_addr+0x411/0x2000 [ 961.899694][ T72] inet6_addr_add+0x30e/0xa40 [ 961.899694][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 961.899694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.899694][ T72] netlink_rcv_skb+0x130/0x360 [ 961.899694][ T72] netlink_unicast+0x449/0x710 [ 961.899694][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.899694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.899694][ T72] ___sys_sendmsg+0xee/0x170 [ 961.899694][ T72] __sys_sendmsg+0xcd/0x170 [ 961.899694][ T72] do_syscall_64+0xc6/0x1e0 [ 961.899694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.899694][ T72] [ 961.902266][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 961.902266][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 961.902266][ T72] ipv6_find_idev+0x102/0x170 [ 961.902266][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.902266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.902266][ T72] netlink_rcv_skb+0x130/0x360 [ 961.902266][ T72] netlink_unicast+0x449/0x710 [ 961.902266][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.902266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.902266][ T72] ___sys_sendmsg+0xee/0x170 [ 961.902266][ T72] __sys_sendmsg+0xcd/0x170 [ 961.902266][ T72] do_syscall_64+0xc6/0x1e0 [ 961.902266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.902266][ T72] [ 961.904152][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 961.904152][ T72] neigh_parms_alloc+0x1e5/0x510 [ 961.904152][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 961.904152][ T72] ipv6_find_idev+0x102/0x170 [ 961.904152][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 961.904152][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 961.904152][ T72] netlink_rcv_skb+0x130/0x360 [ 961.904152][ T72] netlink_unicast+0x449/0x710 [ 961.904152][ T72] netlink_sendmsg+0x723/0xbe0 [ 961.904152][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 961.904152][ T72] ___sys_sendmsg+0xee/0x170 [ 961.904152][ T72] __sys_sendmsg+0xcd/0x170 [ 961.904152][ T72] do_syscall_64+0xc6/0x1e0 [ 961.904152][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 961.904152][ T72] [ 972.142900][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 972.143378][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 972.143378][ T72] netdev_get_by_index+0x5e/0x80 [ 972.143378][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.143378][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.143378][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.143378][ T72] ipv6_add_addr+0x411/0x2000 [ 972.143378][ T72] inet6_addr_add+0x30e/0xa40 [ 972.143378][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.143378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.143378][ T72] netlink_rcv_skb+0x130/0x360 [ 972.143378][ T72] netlink_unicast+0x449/0x710 [ 972.143378][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.143378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.143378][ T72] ___sys_sendmsg+0xee/0x170 [ 972.143378][ T72] __sys_sendmsg+0xcd/0x170 [ 972.143378][ T72] do_syscall_64+0xc6/0x1e0 [ 972.143378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.143378][ T72] [ 972.145652][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 972.145652][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.145652][ T72] ipv6_find_idev+0x102/0x170 [ 972.145652][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.145652][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.145652][ T72] netlink_rcv_skb+0x130/0x360 [ 972.145652][ T72] netlink_unicast+0x449/0x710 [ 972.145652][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.145652][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.145652][ T72] ___sys_sendmsg+0xee/0x170 [ 972.145652][ T72] __sys_sendmsg+0xcd/0x170 [ 972.145652][ T72] do_syscall_64+0xc6/0x1e0 [ 972.145652][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.145652][ T72] [ 972.147363][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 972.147363][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.147363][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.147363][ T72] ipv6_find_idev+0x102/0x170 [ 972.147363][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.147363][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.147363][ T72] netlink_rcv_skb+0x130/0x360 [ 972.147363][ T72] netlink_unicast+0x449/0x710 [ 972.147363][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.147363][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.147363][ T72] ___sys_sendmsg+0xee/0x170 [ 972.147363][ T72] __sys_sendmsg+0xcd/0x170 [ 972.147363][ T72] do_syscall_64+0xc6/0x1e0 [ 972.147363][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.147363][ T72] [ 972.149234][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 972.149522][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 972.149522][ T72] netdev_get_by_index+0x5e/0x80 [ 972.149522][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.149522][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.149522][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.149522][ T72] ipv6_add_addr+0x411/0x2000 [ 972.149522][ T72] inet6_addr_add+0x30e/0xa40 [ 972.149522][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.149522][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.149522][ T72] netlink_rcv_skb+0x130/0x360 [ 972.149522][ T72] netlink_unicast+0x449/0x710 [ 972.149522][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.149522][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.149522][ T72] ___sys_sendmsg+0xee/0x170 [ 972.149522][ T72] __sys_sendmsg+0xcd/0x170 [ 972.149522][ T72] do_syscall_64+0xc6/0x1e0 [ 972.149522][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.149522][ T72] [ 972.151728][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 972.151728][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.151728][ T72] ipv6_find_idev+0x102/0x170 [ 972.151728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.151728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.151728][ T72] netlink_rcv_skb+0x130/0x360 [ 972.151728][ T72] netlink_unicast+0x449/0x710 [ 972.151728][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.151728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.151728][ T72] ___sys_sendmsg+0xee/0x170 [ 972.151728][ T72] __sys_sendmsg+0xcd/0x170 [ 972.151728][ T72] do_syscall_64+0xc6/0x1e0 [ 972.151728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.151728][ T72] [ 972.153425][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 972.153425][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.153425][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.153425][ T72] ipv6_find_idev+0x102/0x170 [ 972.153425][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.153425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.153425][ T72] netlink_rcv_skb+0x130/0x360 [ 972.153425][ T72] netlink_unicast+0x449/0x710 [ 972.153425][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.153425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.153425][ T72] ___sys_sendmsg+0xee/0x170 [ 972.153425][ T72] __sys_sendmsg+0xcd/0x170 [ 972.153425][ T72] do_syscall_64+0xc6/0x1e0 [ 972.153425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.153425][ T72] [ 972.155288][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 972.155581][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 972.155581][ T72] netdev_get_by_index+0x5e/0x80 [ 972.155581][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.155581][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.155581][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.155581][ T72] ipv6_add_addr+0x411/0x2000 [ 972.155581][ T72] inet6_addr_add+0x30e/0xa40 [ 972.155581][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.155581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.155581][ T72] netlink_rcv_skb+0x130/0x360 [ 972.155581][ T72] netlink_unicast+0x449/0x710 [ 972.155581][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.155581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.155581][ T72] ___sys_sendmsg+0xee/0x170 [ 972.155581][ T72] __sys_sendmsg+0xcd/0x170 [ 972.155581][ T72] do_syscall_64+0xc6/0x1e0 [ 972.155581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.155581][ T72] [ 972.157788][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 972.157788][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.157788][ T72] ipv6_find_idev+0x102/0x170 [ 972.157788][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.157788][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.157788][ T72] netlink_rcv_skb+0x130/0x360 [ 972.157788][ T72] netlink_unicast+0x449/0x710 [ 972.157788][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.157788][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.157788][ T72] ___sys_sendmsg+0xee/0x170 [ 972.157788][ T72] __sys_sendmsg+0xcd/0x170 [ 972.157788][ T72] do_syscall_64+0xc6/0x1e0 [ 972.157788][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.157788][ T72] [ 972.160002][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 972.160002][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.160002][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.160002][ T72] ipv6_find_idev+0x102/0x170 [ 972.160002][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.160002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.160002][ T72] netlink_rcv_skb+0x130/0x360 [ 972.160002][ T72] netlink_unicast+0x449/0x710 [ 972.160002][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.160002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.160002][ T72] ___sys_sendmsg+0xee/0x170 [ 972.160002][ T72] __sys_sendmsg+0xcd/0x170 [ 972.160002][ T72] do_syscall_64+0xc6/0x1e0 [ 972.160002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.160002][ T72] [ 972.161858][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 972.162140][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 972.162140][ T72] netdev_get_by_index+0x5e/0x80 [ 972.162140][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.162140][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.162140][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.162140][ T72] ipv6_add_addr+0x411/0x2000 [ 972.162140][ T72] inet6_addr_add+0x30e/0xa40 [ 972.162140][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.162140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.162140][ T72] netlink_rcv_skb+0x130/0x360 [ 972.162140][ T72] netlink_unicast+0x449/0x710 [ 972.162140][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.162140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.162140][ T72] ___sys_sendmsg+0xee/0x170 [ 972.162140][ T72] __sys_sendmsg+0xcd/0x170 [ 972.162140][ T72] do_syscall_64+0xc6/0x1e0 [ 972.162140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.162140][ T72] [ 972.164717][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 972.164717][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.164717][ T72] ipv6_find_idev+0x102/0x170 [ 972.164717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.164717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.164717][ T72] netlink_rcv_skb+0x130/0x360 [ 972.164717][ T72] netlink_unicast+0x449/0x710 [ 972.164717][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.164717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.164717][ T72] ___sys_sendmsg+0xee/0x170 [ 972.164717][ T72] __sys_sendmsg+0xcd/0x170 [ 972.164717][ T72] do_syscall_64+0xc6/0x1e0 [ 972.164717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.164717][ T72] [ 972.166463][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 972.166463][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.166463][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.166463][ T72] ipv6_find_idev+0x102/0x170 [ 972.166463][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.166463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.166463][ T72] netlink_rcv_skb+0x130/0x360 [ 972.166463][ T72] netlink_unicast+0x449/0x710 [ 972.166463][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.166463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.166463][ T72] ___sys_sendmsg+0xee/0x170 [ 972.166463][ T72] __sys_sendmsg+0xcd/0x170 [ 972.166463][ T72] do_syscall_64+0xc6/0x1e0 [ 972.166463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.166463][ T72] [ 972.168764][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 972.169051][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 972.169051][ T72] netdev_get_by_index+0x5e/0x80 [ 972.169051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.169051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.169051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.169051][ T72] ipv6_add_addr+0x411/0x2000 [ 972.169051][ T72] inet6_addr_add+0x30e/0xa40 [ 972.169051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.169051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.169051][ T72] netlink_rcv_skb+0x130/0x360 [ 972.169051][ T72] netlink_unicast+0x449/0x710 [ 972.169051][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.169051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.169051][ T72] ___sys_sendmsg+0xee/0x170 [ 972.169051][ T72] __sys_sendmsg+0xcd/0x170 [ 972.169051][ T72] do_syscall_64+0xc6/0x1e0 [ 972.169051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.169051][ T72] [ 972.171285][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 972.171285][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.171285][ T72] ipv6_find_idev+0x102/0x170 [ 972.171285][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.171285][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.171285][ T72] netlink_rcv_skb+0x130/0x360 [ 972.171285][ T72] netlink_unicast+0x449/0x710 [ 972.171285][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.171285][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.171285][ T72] ___sys_sendmsg+0xee/0x170 [ 972.171285][ T72] __sys_sendmsg+0xcd/0x170 [ 972.171285][ T72] do_syscall_64+0xc6/0x1e0 [ 972.171285][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.171285][ T72] [ 972.172978][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 972.172978][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.172978][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.172978][ T72] ipv6_find_idev+0x102/0x170 [ 972.172978][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.172978][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.172978][ T72] netlink_rcv_skb+0x130/0x360 [ 972.172978][ T72] netlink_unicast+0x449/0x710 [ 972.172978][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.172978][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.172978][ T72] ___sys_sendmsg+0xee/0x170 [ 972.172978][ T72] __sys_sendmsg+0xcd/0x170 [ 972.172978][ T72] do_syscall_64+0xc6/0x1e0 [ 972.172978][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.172978][ T72] [ 972.174881][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 972.175168][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 972.175168][ T72] netdev_get_by_index+0x5e/0x80 [ 972.175168][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.175168][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.175168][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.175168][ T72] ipv6_add_addr+0x411/0x2000 [ 972.175168][ T72] inet6_addr_add+0x30e/0xa40 [ 972.175168][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.175168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.175168][ T72] netlink_rcv_skb+0x130/0x360 [ 972.175168][ T72] netlink_unicast+0x449/0x710 [ 972.175168][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.175168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.175168][ T72] ___sys_sendmsg+0xee/0x170 [ 972.175168][ T72] __sys_sendmsg+0xcd/0x170 [ 972.175168][ T72] do_syscall_64+0xc6/0x1e0 [ 972.175168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.175168][ T72] [ 972.177507][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 972.177507][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.177507][ T72] ipv6_find_idev+0x102/0x170 [ 972.177507][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.177507][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.177507][ T72] netlink_rcv_skb+0x130/0x360 [ 972.177507][ T72] netlink_unicast+0x449/0x710 [ 972.177507][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.177507][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.177507][ T72] ___sys_sendmsg+0xee/0x170 [ 972.177507][ T72] __sys_sendmsg+0xcd/0x170 [ 972.177507][ T72] do_syscall_64+0xc6/0x1e0 [ 972.177507][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.177507][ T72] [ 972.179388][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 972.179388][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.179388][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.179388][ T72] ipv6_find_idev+0x102/0x170 [ 972.179388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.179388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.179388][ T72] netlink_rcv_skb+0x130/0x360 [ 972.179388][ T72] netlink_unicast+0x449/0x710 [ 972.179388][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.179388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.179388][ T72] ___sys_sendmsg+0xee/0x170 [ 972.179388][ T72] __sys_sendmsg+0xcd/0x170 [ 972.179388][ T72] do_syscall_64+0xc6/0x1e0 [ 972.179388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.179388][ T72] [ 972.181535][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 972.181879][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 972.181879][ T72] netdev_get_by_index+0x5e/0x80 [ 972.181879][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.181879][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.181879][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.181879][ T72] ipv6_add_addr+0x411/0x2000 [ 972.181879][ T72] inet6_addr_add+0x30e/0xa40 [ 972.181879][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.181879][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.181879][ T72] netlink_rcv_skb+0x130/0x360 [ 972.181879][ T72] netlink_unicast+0x449/0x710 [ 972.181879][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.181879][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.181879][ T72] ___sys_sendmsg+0xee/0x170 [ 972.181879][ T72] __sys_sendmsg+0xcd/0x170 [ 972.181879][ T72] do_syscall_64+0xc6/0x1e0 [ 972.181879][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.181879][ T72] [ 972.184268][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 972.184268][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.184268][ T72] ipv6_find_idev+0x102/0x170 [ 972.184268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.184268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.184268][ T72] netlink_rcv_skb+0x130/0x360 [ 972.184268][ T72] netlink_unicast+0x449/0x710 [ 972.184268][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.184268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.184268][ T72] ___sys_sendmsg+0xee/0x170 [ 972.184268][ T72] __sys_sendmsg+0xcd/0x170 [ 972.184268][ T72] do_syscall_64+0xc6/0x1e0 [ 972.184268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.184268][ T72] [ 972.186164][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 972.186164][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.186164][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.186164][ T72] ipv6_find_idev+0x102/0x170 [ 972.186164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.186164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.186164][ T72] netlink_rcv_skb+0x130/0x360 [ 972.186164][ T72] netlink_unicast+0x449/0x710 [ 972.186164][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.186164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.186164][ T72] ___sys_sendmsg+0xee/0x170 [ 972.186164][ T72] __sys_sendmsg+0xcd/0x170 [ 972.186164][ T72] do_syscall_64+0xc6/0x1e0 [ 972.186164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.186164][ T72] [ 972.188258][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 972.188543][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 972.188543][ T72] netdev_get_by_index+0x5e/0x80 [ 972.188543][ T72] fib6_nh_init+0x3d8/0x15b0 [ 972.188543][ T72] ip6_route_info_create+0xf18/0x17d0 [ 972.188543][ T72] addrconf_f6i_alloc+0x244/0x410 [ 972.188543][ T72] ipv6_add_addr+0x411/0x2000 [ 972.188543][ T72] inet6_addr_add+0x30e/0xa40 [ 972.188543][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 972.188543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.188543][ T72] netlink_rcv_skb+0x130/0x360 [ 972.188543][ T72] netlink_unicast+0x449/0x710 [ 972.188543][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.188543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.188543][ T72] ___sys_sendmsg+0xee/0x170 [ 972.188543][ T72] __sys_sendmsg+0xcd/0x170 [ 972.188543][ T72] do_syscall_64+0xc6/0x1e0 [ 972.188543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.188543][ T72] [ 972.190998][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 972.190998][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 972.190998][ T72] ipv6_find_idev+0x102/0x170 [ 972.190998][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.190998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.190998][ T72] netlink_rcv_skb+0x130/0x360 [ 972.190998][ T72] netlink_unicast+0x449/0x710 [ 972.190998][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.190998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.190998][ T72] ___sys_sendmsg+0xee/0x170 [ 972.190998][ T72] __sys_sendmsg+0xcd/0x170 [ 972.190998][ T72] do_syscall_64+0xc6/0x1e0 [ 972.190998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.190998][ T72] [ 972.192970][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 972.192970][ T72] neigh_parms_alloc+0x1e5/0x510 [ 972.192970][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 972.192970][ T72] ipv6_find_idev+0x102/0x170 [ 972.192970][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 972.192970][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 972.192970][ T72] netlink_rcv_skb+0x130/0x360 [ 972.192970][ T72] netlink_unicast+0x449/0x710 [ 972.192970][ T72] netlink_sendmsg+0x723/0xbe0 [ 972.192970][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 972.192970][ T72] ___sys_sendmsg+0xee/0x170 [ 972.192970][ T72] __sys_sendmsg+0xcd/0x170 [ 972.192970][ T72] do_syscall_64+0xc6/0x1e0 [ 972.192970][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 972.192970][ T72] [ 982.430931][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 982.431453][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 982.431453][ T72] netdev_get_by_index+0x5e/0x80 [ 982.431453][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.431453][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.431453][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.431453][ T72] ipv6_add_addr+0x411/0x2000 [ 982.431453][ T72] inet6_addr_add+0x30e/0xa40 [ 982.431453][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.431453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.431453][ T72] netlink_rcv_skb+0x130/0x360 [ 982.431453][ T72] netlink_unicast+0x449/0x710 [ 982.431453][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.431453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.431453][ T72] ___sys_sendmsg+0xee/0x170 [ 982.431453][ T72] __sys_sendmsg+0xcd/0x170 [ 982.431453][ T72] do_syscall_64+0xc6/0x1e0 [ 982.431453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.431453][ T72] [ 982.433483][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 982.433483][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.433483][ T72] ipv6_find_idev+0x102/0x170 [ 982.433483][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.433483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.433483][ T72] netlink_rcv_skb+0x130/0x360 [ 982.433483][ T72] netlink_unicast+0x449/0x710 [ 982.433483][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.433483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.433483][ T72] ___sys_sendmsg+0xee/0x170 [ 982.433483][ T72] __sys_sendmsg+0xcd/0x170 [ 982.433483][ T72] do_syscall_64+0xc6/0x1e0 [ 982.433483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.433483][ T72] [ 982.435028][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 982.435028][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.435028][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.435028][ T72] ipv6_find_idev+0x102/0x170 [ 982.435028][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.435028][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.435028][ T72] netlink_rcv_skb+0x130/0x360 [ 982.435028][ T72] netlink_unicast+0x449/0x710 [ 982.435028][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.435028][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.435028][ T72] ___sys_sendmsg+0xee/0x170 [ 982.435028][ T72] __sys_sendmsg+0xcd/0x170 [ 982.435028][ T72] do_syscall_64+0xc6/0x1e0 [ 982.435028][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.435028][ T72] [ 982.436752][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 982.437036][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 982.437036][ T72] netdev_get_by_index+0x5e/0x80 [ 982.437036][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.437036][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.437036][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.437036][ T72] ipv6_add_addr+0x411/0x2000 [ 982.437036][ T72] inet6_addr_add+0x30e/0xa40 [ 982.437036][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.437036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.437036][ T72] netlink_rcv_skb+0x130/0x360 [ 982.437036][ T72] netlink_unicast+0x449/0x710 [ 982.437036][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.437036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.437036][ T72] ___sys_sendmsg+0xee/0x170 [ 982.437036][ T72] __sys_sendmsg+0xcd/0x170 [ 982.437036][ T72] do_syscall_64+0xc6/0x1e0 [ 982.437036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.437036][ T72] [ 982.439027][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 982.439027][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.439027][ T72] ipv6_find_idev+0x102/0x170 [ 982.439027][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.439027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.439027][ T72] netlink_rcv_skb+0x130/0x360 [ 982.439027][ T72] netlink_unicast+0x449/0x710 [ 982.439027][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.439027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.439027][ T72] ___sys_sendmsg+0xee/0x170 [ 982.439027][ T72] __sys_sendmsg+0xcd/0x170 [ 982.439027][ T72] do_syscall_64+0xc6/0x1e0 [ 982.439027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.439027][ T72] [ 982.440569][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 982.440569][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.440569][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.440569][ T72] ipv6_find_idev+0x102/0x170 [ 982.440569][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.440569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.440569][ T72] netlink_rcv_skb+0x130/0x360 [ 982.440569][ T72] netlink_unicast+0x449/0x710 [ 982.440569][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.440569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.440569][ T72] ___sys_sendmsg+0xee/0x170 [ 982.440569][ T72] __sys_sendmsg+0xcd/0x170 [ 982.440569][ T72] do_syscall_64+0xc6/0x1e0 [ 982.440569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.440569][ T72] [ 982.442263][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 982.442529][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 982.442529][ T72] netdev_get_by_index+0x5e/0x80 [ 982.442529][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.442529][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.442529][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.442529][ T72] ipv6_add_addr+0x411/0x2000 [ 982.442529][ T72] inet6_addr_add+0x30e/0xa40 [ 982.442529][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.442529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.442529][ T72] netlink_rcv_skb+0x130/0x360 [ 982.442529][ T72] netlink_unicast+0x449/0x710 [ 982.442529][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.442529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.442529][ T72] ___sys_sendmsg+0xee/0x170 [ 982.442529][ T72] __sys_sendmsg+0xcd/0x170 [ 982.442529][ T72] do_syscall_64+0xc6/0x1e0 [ 982.442529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.442529][ T72] [ 982.444517][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 982.444517][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.444517][ T72] ipv6_find_idev+0x102/0x170 [ 982.444517][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.444517][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.444517][ T72] netlink_rcv_skb+0x130/0x360 [ 982.444517][ T72] netlink_unicast+0x449/0x710 [ 982.444517][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.444517][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.444517][ T72] ___sys_sendmsg+0xee/0x170 [ 982.444517][ T72] __sys_sendmsg+0xcd/0x170 [ 982.444517][ T72] do_syscall_64+0xc6/0x1e0 [ 982.444517][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.444517][ T72] [ 982.446069][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 982.446069][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.446069][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.446069][ T72] ipv6_find_idev+0x102/0x170 [ 982.446069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.446069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.446069][ T72] netlink_rcv_skb+0x130/0x360 [ 982.446069][ T72] netlink_unicast+0x449/0x710 [ 982.446069][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.446069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.446069][ T72] ___sys_sendmsg+0xee/0x170 [ 982.446069][ T72] __sys_sendmsg+0xcd/0x170 [ 982.446069][ T72] do_syscall_64+0xc6/0x1e0 [ 982.446069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.446069][ T72] [ 982.447756][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 982.448019][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 982.448019][ T72] netdev_get_by_index+0x5e/0x80 [ 982.448019][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.448019][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.448019][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.448019][ T72] ipv6_add_addr+0x411/0x2000 [ 982.448019][ T72] inet6_addr_add+0x30e/0xa40 [ 982.448019][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.448019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.448019][ T72] netlink_rcv_skb+0x130/0x360 [ 982.448019][ T72] netlink_unicast+0x449/0x710 [ 982.448019][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.448019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.448019][ T72] ___sys_sendmsg+0xee/0x170 [ 982.448019][ T72] __sys_sendmsg+0xcd/0x170 [ 982.448019][ T72] do_syscall_64+0xc6/0x1e0 [ 982.448019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.448019][ T72] [ 982.450008][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 982.450008][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.450008][ T72] ipv6_find_idev+0x102/0x170 [ 982.450008][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.450008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.450008][ T72] netlink_rcv_skb+0x130/0x360 [ 982.450008][ T72] netlink_unicast+0x449/0x710 [ 982.450008][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.450008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.450008][ T72] ___sys_sendmsg+0xee/0x170 [ 982.450008][ T72] __sys_sendmsg+0xcd/0x170 [ 982.450008][ T72] do_syscall_64+0xc6/0x1e0 [ 982.450008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.450008][ T72] [ 982.451936][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 982.451936][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.451936][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.451936][ T72] ipv6_find_idev+0x102/0x170 [ 982.451936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.451936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.451936][ T72] netlink_rcv_skb+0x130/0x360 [ 982.451936][ T72] netlink_unicast+0x449/0x710 [ 982.451936][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.451936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.451936][ T72] ___sys_sendmsg+0xee/0x170 [ 982.451936][ T72] __sys_sendmsg+0xcd/0x170 [ 982.451936][ T72] do_syscall_64+0xc6/0x1e0 [ 982.451936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.451936][ T72] [ 982.454385][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 982.454992][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 982.454992][ T72] netdev_get_by_index+0x5e/0x80 [ 982.454992][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.454992][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.454992][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.454992][ T72] ipv6_add_addr+0x411/0x2000 [ 982.454992][ T72] inet6_addr_add+0x30e/0xa40 [ 982.454992][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.454992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.454992][ T72] netlink_rcv_skb+0x130/0x360 [ 982.454992][ T72] netlink_unicast+0x449/0x710 [ 982.454992][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.454992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.454992][ T72] ___sys_sendmsg+0xee/0x170 [ 982.454992][ T72] __sys_sendmsg+0xcd/0x170 [ 982.454992][ T72] do_syscall_64+0xc6/0x1e0 [ 982.454992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.454992][ T72] [ 982.456990][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 982.456990][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.456990][ T72] ipv6_find_idev+0x102/0x170 [ 982.456990][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.456990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.456990][ T72] netlink_rcv_skb+0x130/0x360 [ 982.456990][ T72] netlink_unicast+0x449/0x710 [ 982.456990][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.456990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.456990][ T72] ___sys_sendmsg+0xee/0x170 [ 982.456990][ T72] __sys_sendmsg+0xcd/0x170 [ 982.456990][ T72] do_syscall_64+0xc6/0x1e0 [ 982.456990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.456990][ T72] [ 982.458509][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 982.458509][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.458509][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.458509][ T72] ipv6_find_idev+0x102/0x170 [ 982.458509][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.458509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.458509][ T72] netlink_rcv_skb+0x130/0x360 [ 982.458509][ T72] netlink_unicast+0x449/0x710 [ 982.458509][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.458509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.458509][ T72] ___sys_sendmsg+0xee/0x170 [ 982.458509][ T72] __sys_sendmsg+0xcd/0x170 [ 982.458509][ T72] do_syscall_64+0xc6/0x1e0 [ 982.458509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.458509][ T72] [ 982.460176][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 982.460447][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 982.460447][ T72] netdev_get_by_index+0x5e/0x80 [ 982.460447][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.460447][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.460447][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.460447][ T72] ipv6_add_addr+0x411/0x2000 [ 982.460447][ T72] inet6_addr_add+0x30e/0xa40 [ 982.460447][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.460447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.460447][ T72] netlink_rcv_skb+0x130/0x360 [ 982.460447][ T72] netlink_unicast+0x449/0x710 [ 982.460447][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.460447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.460447][ T72] ___sys_sendmsg+0xee/0x170 [ 982.460447][ T72] __sys_sendmsg+0xcd/0x170 [ 982.460447][ T72] do_syscall_64+0xc6/0x1e0 [ 982.460447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.460447][ T72] [ 982.462430][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 982.462430][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.462430][ T72] ipv6_find_idev+0x102/0x170 [ 982.462430][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.462430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.462430][ T72] netlink_rcv_skb+0x130/0x360 [ 982.462430][ T72] netlink_unicast+0x449/0x710 [ 982.462430][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.462430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.462430][ T72] ___sys_sendmsg+0xee/0x170 [ 982.462430][ T72] __sys_sendmsg+0xcd/0x170 [ 982.462430][ T72] do_syscall_64+0xc6/0x1e0 [ 982.462430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.462430][ T72] [ 982.464026][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 982.464026][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.464026][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.464026][ T72] ipv6_find_idev+0x102/0x170 [ 982.464026][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.464026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.464026][ T72] netlink_rcv_skb+0x130/0x360 [ 982.464026][ T72] netlink_unicast+0x449/0x710 [ 982.464026][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.464026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.464026][ T72] ___sys_sendmsg+0xee/0x170 [ 982.464026][ T72] __sys_sendmsg+0xcd/0x170 [ 982.464026][ T72] do_syscall_64+0xc6/0x1e0 [ 982.464026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.464026][ T72] [ 982.465923][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 982.466234][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 982.466234][ T72] netdev_get_by_index+0x5e/0x80 [ 982.466234][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.466234][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.466234][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.466234][ T72] ipv6_add_addr+0x411/0x2000 [ 982.466234][ T72] inet6_addr_add+0x30e/0xa40 [ 982.466234][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.466234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.466234][ T72] netlink_rcv_skb+0x130/0x360 [ 982.466234][ T72] netlink_unicast+0x449/0x710 [ 982.466234][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.466234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.466234][ T72] ___sys_sendmsg+0xee/0x170 [ 982.466234][ T72] __sys_sendmsg+0xcd/0x170 [ 982.466234][ T72] do_syscall_64+0xc6/0x1e0 [ 982.466234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.466234][ T72] [ 982.468416][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 982.468416][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.468416][ T72] ipv6_find_idev+0x102/0x170 [ 982.468416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.468416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.468416][ T72] netlink_rcv_skb+0x130/0x360 [ 982.468416][ T72] netlink_unicast+0x449/0x710 [ 982.468416][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.468416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.468416][ T72] ___sys_sendmsg+0xee/0x170 [ 982.468416][ T72] __sys_sendmsg+0xcd/0x170 [ 982.468416][ T72] do_syscall_64+0xc6/0x1e0 [ 982.468416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.468416][ T72] [ 982.470195][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 982.470195][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.470195][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.470195][ T72] ipv6_find_idev+0x102/0x170 [ 982.470195][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.470195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.470195][ T72] netlink_rcv_skb+0x130/0x360 [ 982.470195][ T72] netlink_unicast+0x449/0x710 [ 982.470195][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.470195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.470195][ T72] ___sys_sendmsg+0xee/0x170 [ 982.470195][ T72] __sys_sendmsg+0xcd/0x170 [ 982.470195][ T72] do_syscall_64+0xc6/0x1e0 [ 982.470195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.470195][ T72] [ 982.472137][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 982.472449][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 982.472449][ T72] netdev_get_by_index+0x5e/0x80 [ 982.472449][ T72] fib6_nh_init+0x3d8/0x15b0 [ 982.472449][ T72] ip6_route_info_create+0xf18/0x17d0 [ 982.472449][ T72] addrconf_f6i_alloc+0x244/0x410 [ 982.472449][ T72] ipv6_add_addr+0x411/0x2000 [ 982.472449][ T72] inet6_addr_add+0x30e/0xa40 [ 982.472449][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 982.472449][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.472449][ T72] netlink_rcv_skb+0x130/0x360 [ 982.472449][ T72] netlink_unicast+0x449/0x710 [ 982.472449][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.472449][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.472449][ T72] ___sys_sendmsg+0xee/0x170 [ 982.472449][ T72] __sys_sendmsg+0xcd/0x170 [ 982.472449][ T72] do_syscall_64+0xc6/0x1e0 [ 982.472449][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.472449][ T72] [ 982.474605][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 982.474605][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 982.474605][ T72] ipv6_find_idev+0x102/0x170 [ 982.474605][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.474605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.474605][ T72] netlink_rcv_skb+0x130/0x360 [ 982.474605][ T72] netlink_unicast+0x449/0x710 [ 982.474605][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.474605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.474605][ T72] ___sys_sendmsg+0xee/0x170 [ 982.474605][ T72] __sys_sendmsg+0xcd/0x170 [ 982.474605][ T72] do_syscall_64+0xc6/0x1e0 [ 982.474605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.474605][ T72] [ 982.476310][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 982.476310][ T72] neigh_parms_alloc+0x1e5/0x510 [ 982.476310][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 982.476310][ T72] ipv6_find_idev+0x102/0x170 [ 982.476310][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 982.476310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 982.476310][ T72] netlink_rcv_skb+0x130/0x360 [ 982.476310][ T72] netlink_unicast+0x449/0x710 [ 982.476310][ T72] netlink_sendmsg+0x723/0xbe0 [ 982.476310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 982.476310][ T72] ___sys_sendmsg+0xee/0x170 [ 982.476310][ T72] __sys_sendmsg+0xcd/0x170 [ 982.476310][ T72] do_syscall_64+0xc6/0x1e0 [ 982.476310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 982.476310][ T72] [ 984.358933][ T42] INFO: task modprobe:1060 blocked for more than 737 seconds. [ 984.359314][ T42] Not tainted 6.8.0-virtme #1 [ 984.359438][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 984.359641][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 984.359955][ T42] Call Trace: [ 984.360056][ T42] [ 984.360130][ T42] __schedule+0x705/0x1ac0 [ 984.360278][ T42] ? __pfx___schedule+0x10/0x10 [ 984.360406][ T42] ? schedule+0x1a5/0x210 [ 984.360505][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 984.360637][ T42] ? mark_lock+0x38/0x3e0 [ 984.360750][ T42] ? do_raw_spin_lock+0x131/0x270 [ 984.360887][ T42] ? schedule+0x1a5/0x210 [ 984.360990][ T42] schedule+0xdf/0x210 [ 984.361088][ T42] schedule_preempt_disabled+0x15/0x30 [ 984.361217][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 984.361350][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 984.361505][ T42] ? kasan_save_stack+0x34/0x50 [ 984.361635][ T42] ? kasan_save_stack+0x24/0x50 [ 984.361779][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 984.361912][ T42] ? lock_acquire+0x1c1/0x220 [ 984.362039][ T42] ? register_pernet_subsys+0x1a/0x50 [ 984.362175][ T42] down_write+0x1c9/0x200 [ 984.362275][ T42] ? __pfx_down_write+0x10/0x10 [ 984.362400][ T42] ? __pfx___lock_release+0x10/0x10 [ 984.362533][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 984.362724][ T42] register_pernet_subsys+0x1a/0x50 [ 984.362864][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 984.363048][ T42] do_one_initcall+0xc8/0x3f0 [ 984.363179][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 984.363308][ T42] ? __create_object+0x5e/0xb0 [ 984.363444][ T42] ? kasan_unpoison+0x27/0x60 [ 984.363574][ T42] do_init_module+0x233/0x740 [ 984.363710][ T42] load_module+0x16b5/0x2350 [ 984.363871][ T42] ? __pfx_load_module+0x10/0x10 [ 984.364000][ T42] ? kernel_read_file+0x3d2/0x520 [ 984.364141][ T42] ? kernel_read_file+0x300/0x520 [ 984.364276][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 984.364410][ T42] ? init_module_from_file+0xd2/0x130 [ 984.364537][ T42] init_module_from_file+0xd2/0x130 [ 984.364664][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 984.364830][ T42] ? __lock_release+0x103/0x460 [ 984.364955][ T42] ? idempotent_init_module+0x32a/0x620 [ 984.365094][ T42] ? idempotent_init_module+0x32a/0x620 [ 984.365225][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 984.365354][ T42] idempotent_init_module+0x342/0x620 [ 984.365482][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 984.365656][ T42] __x64_sys_finit_module+0xbe/0x130 [ 984.365796][ T42] do_syscall_64+0xc6/0x1e0 [ 984.365928][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 984.366085][ T42] RIP: 0033:0x7f69f7397e5d [ 984.366215][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 984.366413][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 984.366596][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 984.366795][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 984.366981][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 984.367168][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 984.367367][ T42] [ 984.367467][ T42] [ 984.367467][ T42] Showing all locks held in the system: [ 984.367648][ T42] 1 lock held by khungtaskd/42: [ 984.367792][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 984.368021][ T42] 2 locks held by kworker/u20:1/60: [ 984.368142][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 984.368398][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 984.368680][ T42] 3 locks held by kworker/u16:1/72: [ 984.368813][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 984.369066][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 984.369287][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 984.369512][ T42] 1 lock held by modprobe/1060: [ 984.369634][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 984.369895][ T42] [ 984.369959][ T42] ============================================= [ 984.369959][ T42] [ 992.718901][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 992.719552][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 992.719552][ T72] netdev_get_by_index+0x5e/0x80 [ 992.719552][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.719552][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.719552][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.719552][ T72] ipv6_add_addr+0x411/0x2000 [ 992.719552][ T72] inet6_addr_add+0x30e/0xa40 [ 992.719552][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.719552][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.719552][ T72] netlink_rcv_skb+0x130/0x360 [ 992.719552][ T72] netlink_unicast+0x449/0x710 [ 992.719552][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.719552][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.719552][ T72] ___sys_sendmsg+0xee/0x170 [ 992.719552][ T72] __sys_sendmsg+0xcd/0x170 [ 992.719552][ T72] do_syscall_64+0xc6/0x1e0 [ 992.719552][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.719552][ T72] [ 992.722644][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 992.722644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.722644][ T72] ipv6_find_idev+0x102/0x170 [ 992.722644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.722644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.722644][ T72] netlink_rcv_skb+0x130/0x360 [ 992.722644][ T72] netlink_unicast+0x449/0x710 [ 992.722644][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.722644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.722644][ T72] ___sys_sendmsg+0xee/0x170 [ 992.722644][ T72] __sys_sendmsg+0xcd/0x170 [ 992.722644][ T72] do_syscall_64+0xc6/0x1e0 [ 992.722644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.722644][ T72] [ 992.725057][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 992.725057][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.725057][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.725057][ T72] ipv6_find_idev+0x102/0x170 [ 992.725057][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.725057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.725057][ T72] netlink_rcv_skb+0x130/0x360 [ 992.725057][ T72] netlink_unicast+0x449/0x710 [ 992.725057][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.725057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.725057][ T72] ___sys_sendmsg+0xee/0x170 [ 992.725057][ T72] __sys_sendmsg+0xcd/0x170 [ 992.725057][ T72] do_syscall_64+0xc6/0x1e0 [ 992.725057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.725057][ T72] [ 992.727691][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 992.728145][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 992.728145][ T72] netdev_get_by_index+0x5e/0x80 [ 992.728145][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.728145][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.728145][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.728145][ T72] ipv6_add_addr+0x411/0x2000 [ 992.728145][ T72] inet6_addr_add+0x30e/0xa40 [ 992.728145][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.728145][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.728145][ T72] netlink_rcv_skb+0x130/0x360 [ 992.728145][ T72] netlink_unicast+0x449/0x710 [ 992.728145][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.728145][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.728145][ T72] ___sys_sendmsg+0xee/0x170 [ 992.728145][ T72] __sys_sendmsg+0xcd/0x170 [ 992.728145][ T72] do_syscall_64+0xc6/0x1e0 [ 992.728145][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.728145][ T72] [ 992.731241][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 992.731241][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.731241][ T72] ipv6_find_idev+0x102/0x170 [ 992.731241][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.731241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.731241][ T72] netlink_rcv_skb+0x130/0x360 [ 992.731241][ T72] netlink_unicast+0x449/0x710 [ 992.731241][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.731241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.731241][ T72] ___sys_sendmsg+0xee/0x170 [ 992.731241][ T72] __sys_sendmsg+0xcd/0x170 [ 992.731241][ T72] do_syscall_64+0xc6/0x1e0 [ 992.731241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.731241][ T72] [ 992.733583][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 992.733583][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.733583][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.733583][ T72] ipv6_find_idev+0x102/0x170 [ 992.733583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.733583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.733583][ T72] netlink_rcv_skb+0x130/0x360 [ 992.733583][ T72] netlink_unicast+0x449/0x710 [ 992.733583][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.733583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.733583][ T72] ___sys_sendmsg+0xee/0x170 [ 992.733583][ T72] __sys_sendmsg+0xcd/0x170 [ 992.733583][ T72] do_syscall_64+0xc6/0x1e0 [ 992.733583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.733583][ T72] [ 992.735592][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 992.735882][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 992.735882][ T72] netdev_get_by_index+0x5e/0x80 [ 992.735882][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.735882][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.735882][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.735882][ T72] ipv6_add_addr+0x411/0x2000 [ 992.735882][ T72] inet6_addr_add+0x30e/0xa40 [ 992.735882][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.735882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.735882][ T72] netlink_rcv_skb+0x130/0x360 [ 992.735882][ T72] netlink_unicast+0x449/0x710 [ 992.735882][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.735882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.735882][ T72] ___sys_sendmsg+0xee/0x170 [ 992.735882][ T72] __sys_sendmsg+0xcd/0x170 [ 992.735882][ T72] do_syscall_64+0xc6/0x1e0 [ 992.735882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.735882][ T72] [ 992.738291][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 992.738291][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.738291][ T72] ipv6_find_idev+0x102/0x170 [ 992.738291][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.738291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.738291][ T72] netlink_rcv_skb+0x130/0x360 [ 992.738291][ T72] netlink_unicast+0x449/0x710 [ 992.738291][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.738291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.738291][ T72] ___sys_sendmsg+0xee/0x170 [ 992.738291][ T72] __sys_sendmsg+0xcd/0x170 [ 992.738291][ T72] do_syscall_64+0xc6/0x1e0 [ 992.738291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.738291][ T72] [ 992.739856][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 992.739856][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.739856][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.739856][ T72] ipv6_find_idev+0x102/0x170 [ 992.739856][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.739856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.739856][ T72] netlink_rcv_skb+0x130/0x360 [ 992.739856][ T72] netlink_unicast+0x449/0x710 [ 992.739856][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.739856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.739856][ T72] ___sys_sendmsg+0xee/0x170 [ 992.739856][ T72] __sys_sendmsg+0xcd/0x170 [ 992.739856][ T72] do_syscall_64+0xc6/0x1e0 [ 992.739856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.739856][ T72] [ 992.741726][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 992.742472][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 992.742472][ T72] netdev_get_by_index+0x5e/0x80 [ 992.742472][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.742472][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.742472][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.742472][ T72] ipv6_add_addr+0x411/0x2000 [ 992.742472][ T72] inet6_addr_add+0x30e/0xa40 [ 992.742472][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.742472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.742472][ T72] netlink_rcv_skb+0x130/0x360 [ 992.742472][ T72] netlink_unicast+0x449/0x710 [ 992.742472][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.742472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.742472][ T72] ___sys_sendmsg+0xee/0x170 [ 992.742472][ T72] __sys_sendmsg+0xcd/0x170 [ 992.742472][ T72] do_syscall_64+0xc6/0x1e0 [ 992.742472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.742472][ T72] [ 992.744488][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 992.744488][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.744488][ T72] ipv6_find_idev+0x102/0x170 [ 992.744488][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.744488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.744488][ T72] netlink_rcv_skb+0x130/0x360 [ 992.744488][ T72] netlink_unicast+0x449/0x710 [ 992.744488][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.744488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.744488][ T72] ___sys_sendmsg+0xee/0x170 [ 992.744488][ T72] __sys_sendmsg+0xcd/0x170 [ 992.744488][ T72] do_syscall_64+0xc6/0x1e0 [ 992.744488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.744488][ T72] [ 992.746616][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 992.746616][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.746616][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.746616][ T72] ipv6_find_idev+0x102/0x170 [ 992.746616][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.746616][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.746616][ T72] netlink_rcv_skb+0x130/0x360 [ 992.746616][ T72] netlink_unicast+0x449/0x710 [ 992.746616][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.746616][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.746616][ T72] ___sys_sendmsg+0xee/0x170 [ 992.746616][ T72] __sys_sendmsg+0xcd/0x170 [ 992.746616][ T72] do_syscall_64+0xc6/0x1e0 [ 992.746616][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.746616][ T72] [ 992.749242][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 992.749729][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 992.749729][ T72] netdev_get_by_index+0x5e/0x80 [ 992.749729][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.749729][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.749729][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.749729][ T72] ipv6_add_addr+0x411/0x2000 [ 992.749729][ T72] inet6_addr_add+0x30e/0xa40 [ 992.749729][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.749729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.749729][ T72] netlink_rcv_skb+0x130/0x360 [ 992.749729][ T72] netlink_unicast+0x449/0x710 [ 992.749729][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.749729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.749729][ T72] ___sys_sendmsg+0xee/0x170 [ 992.749729][ T72] __sys_sendmsg+0xcd/0x170 [ 992.749729][ T72] do_syscall_64+0xc6/0x1e0 [ 992.749729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.749729][ T72] [ 992.752667][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 992.752667][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.752667][ T72] ipv6_find_idev+0x102/0x170 [ 992.752667][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.752667][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.752667][ T72] netlink_rcv_skb+0x130/0x360 [ 992.752667][ T72] netlink_unicast+0x449/0x710 [ 992.752667][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.752667][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.752667][ T72] ___sys_sendmsg+0xee/0x170 [ 992.752667][ T72] __sys_sendmsg+0xcd/0x170 [ 992.752667][ T72] do_syscall_64+0xc6/0x1e0 [ 992.752667][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.752667][ T72] [ 992.754944][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 992.754944][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.754944][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.754944][ T72] ipv6_find_idev+0x102/0x170 [ 992.754944][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.754944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.754944][ T72] netlink_rcv_skb+0x130/0x360 [ 992.754944][ T72] netlink_unicast+0x449/0x710 [ 992.754944][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.754944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.754944][ T72] ___sys_sendmsg+0xee/0x170 [ 992.754944][ T72] __sys_sendmsg+0xcd/0x170 [ 992.754944][ T72] do_syscall_64+0xc6/0x1e0 [ 992.754944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.754944][ T72] [ 992.757519][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 992.758008][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 992.758008][ T72] netdev_get_by_index+0x5e/0x80 [ 992.758008][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.758008][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.758008][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.758008][ T72] ipv6_add_addr+0x411/0x2000 [ 992.758008][ T72] inet6_addr_add+0x30e/0xa40 [ 992.758008][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.758008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.758008][ T72] netlink_rcv_skb+0x130/0x360 [ 992.758008][ T72] netlink_unicast+0x449/0x710 [ 992.758008][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.758008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.758008][ T72] ___sys_sendmsg+0xee/0x170 [ 992.758008][ T72] __sys_sendmsg+0xcd/0x170 [ 992.758008][ T72] do_syscall_64+0xc6/0x1e0 [ 992.758008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.758008][ T72] [ 992.760968][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 992.760968][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.760968][ T72] ipv6_find_idev+0x102/0x170 [ 992.760968][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.760968][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.760968][ T72] netlink_rcv_skb+0x130/0x360 [ 992.760968][ T72] netlink_unicast+0x449/0x710 [ 992.760968][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.760968][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.760968][ T72] ___sys_sendmsg+0xee/0x170 [ 992.760968][ T72] __sys_sendmsg+0xcd/0x170 [ 992.760968][ T72] do_syscall_64+0xc6/0x1e0 [ 992.760968][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.760968][ T72] [ 992.763571][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 992.763571][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.763571][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.763571][ T72] ipv6_find_idev+0x102/0x170 [ 992.763571][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.763571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.763571][ T72] netlink_rcv_skb+0x130/0x360 [ 992.763571][ T72] netlink_unicast+0x449/0x710 [ 992.763571][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.763571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.763571][ T72] ___sys_sendmsg+0xee/0x170 [ 992.763571][ T72] __sys_sendmsg+0xcd/0x170 [ 992.763571][ T72] do_syscall_64+0xc6/0x1e0 [ 992.763571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.763571][ T72] [ 992.766779][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 992.767264][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 992.767264][ T72] netdev_get_by_index+0x5e/0x80 [ 992.767264][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.767264][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.767264][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.767264][ T72] ipv6_add_addr+0x411/0x2000 [ 992.767264][ T72] inet6_addr_add+0x30e/0xa40 [ 992.767264][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.767264][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.767264][ T72] netlink_rcv_skb+0x130/0x360 [ 992.767264][ T72] netlink_unicast+0x449/0x710 [ 992.767264][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.767264][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.767264][ T72] ___sys_sendmsg+0xee/0x170 [ 992.767264][ T72] __sys_sendmsg+0xcd/0x170 [ 992.767264][ T72] do_syscall_64+0xc6/0x1e0 [ 992.767264][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.767264][ T72] [ 992.770749][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 992.770749][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.770749][ T72] ipv6_find_idev+0x102/0x170 [ 992.770749][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.770749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.770749][ T72] netlink_rcv_skb+0x130/0x360 [ 992.770749][ T72] netlink_unicast+0x449/0x710 [ 992.770749][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.770749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.770749][ T72] ___sys_sendmsg+0xee/0x170 [ 992.770749][ T72] __sys_sendmsg+0xcd/0x170 [ 992.770749][ T72] do_syscall_64+0xc6/0x1e0 [ 992.770749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.770749][ T72] [ 992.773408][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 992.773408][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.773408][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.773408][ T72] ipv6_find_idev+0x102/0x170 [ 992.773408][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.773408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.773408][ T72] netlink_rcv_skb+0x130/0x360 [ 992.773408][ T72] netlink_unicast+0x449/0x710 [ 992.773408][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.773408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.773408][ T72] ___sys_sendmsg+0xee/0x170 [ 992.773408][ T72] __sys_sendmsg+0xcd/0x170 [ 992.773408][ T72] do_syscall_64+0xc6/0x1e0 [ 992.773408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.773408][ T72] [ 992.776443][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 992.776956][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 992.776956][ T72] netdev_get_by_index+0x5e/0x80 [ 992.776956][ T72] fib6_nh_init+0x3d8/0x15b0 [ 992.776956][ T72] ip6_route_info_create+0xf18/0x17d0 [ 992.776956][ T72] addrconf_f6i_alloc+0x244/0x410 [ 992.776956][ T72] ipv6_add_addr+0x411/0x2000 [ 992.776956][ T72] inet6_addr_add+0x30e/0xa40 [ 992.776956][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 992.776956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.776956][ T72] netlink_rcv_skb+0x130/0x360 [ 992.776956][ T72] netlink_unicast+0x449/0x710 [ 992.776956][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.776956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.776956][ T72] ___sys_sendmsg+0xee/0x170 [ 992.776956][ T72] __sys_sendmsg+0xcd/0x170 [ 992.776956][ T72] do_syscall_64+0xc6/0x1e0 [ 992.776956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.776956][ T72] [ 992.780455][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 992.780455][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 992.780455][ T72] ipv6_find_idev+0x102/0x170 [ 992.780455][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.780455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.780455][ T72] netlink_rcv_skb+0x130/0x360 [ 992.780455][ T72] netlink_unicast+0x449/0x710 [ 992.780455][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.780455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.780455][ T72] ___sys_sendmsg+0xee/0x170 [ 992.780455][ T72] __sys_sendmsg+0xcd/0x170 [ 992.780455][ T72] do_syscall_64+0xc6/0x1e0 [ 992.780455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.780455][ T72] [ 992.783295][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 992.783295][ T72] neigh_parms_alloc+0x1e5/0x510 [ 992.783295][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 992.783295][ T72] ipv6_find_idev+0x102/0x170 [ 992.783295][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 992.783295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 992.783295][ T72] netlink_rcv_skb+0x130/0x360 [ 992.783295][ T72] netlink_unicast+0x449/0x710 [ 992.783295][ T72] netlink_sendmsg+0x723/0xbe0 [ 992.783295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 992.783295][ T72] ___sys_sendmsg+0xee/0x170 [ 992.783295][ T72] __sys_sendmsg+0xcd/0x170 [ 992.783295][ T72] do_syscall_64+0xc6/0x1e0 [ 992.783295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 992.783295][ T72] [ 1003.022844][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1003.023534][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1003.023534][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.023534][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.023534][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.023534][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.023534][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.023534][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.023534][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.023534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.023534][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.023534][ T72] netlink_unicast+0x449/0x710 [ 1003.023534][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.023534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.023534][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.023534][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.023534][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.023534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.023534][ T72] [ 1003.026699][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1003.026699][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.026699][ T72] ipv6_find_idev+0x102/0x170 [ 1003.026699][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.026699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.026699][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.026699][ T72] netlink_unicast+0x449/0x710 [ 1003.026699][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.026699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.026699][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.026699][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.026699][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.026699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.026699][ T72] [ 1003.029088][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1003.029088][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.029088][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.029088][ T72] ipv6_find_idev+0x102/0x170 [ 1003.029088][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.029088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.029088][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.029088][ T72] netlink_unicast+0x449/0x710 [ 1003.029088][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.029088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.029088][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.029088][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.029088][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.029088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.029088][ T72] [ 1003.031783][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1003.032217][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1003.032217][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.032217][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.032217][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.032217][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.032217][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.032217][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.032217][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.032217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.032217][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.032217][ T72] netlink_unicast+0x449/0x710 [ 1003.032217][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.032217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.032217][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.032217][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.032217][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.032217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.032217][ T72] [ 1003.035195][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1003.035195][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.035195][ T72] ipv6_find_idev+0x102/0x170 [ 1003.035195][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.035195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.035195][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.035195][ T72] netlink_unicast+0x449/0x710 [ 1003.035195][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.035195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.035195][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.035195][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.035195][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.035195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.035195][ T72] [ 1003.037531][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1003.037531][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.037531][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.037531][ T72] ipv6_find_idev+0x102/0x170 [ 1003.037531][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.037531][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.037531][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.037531][ T72] netlink_unicast+0x449/0x710 [ 1003.037531][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.037531][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.037531][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.037531][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.037531][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.037531][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.037531][ T72] [ 1003.040110][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1003.040500][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1003.040500][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.040500][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.040500][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.040500][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.040500][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.040500][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.040500][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.040500][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.040500][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.040500][ T72] netlink_unicast+0x449/0x710 [ 1003.040500][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.040500][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.040500][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.040500][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.040500][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.040500][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.040500][ T72] [ 1003.043529][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1003.043529][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.043529][ T72] ipv6_find_idev+0x102/0x170 [ 1003.043529][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.043529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.043529][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.043529][ T72] netlink_unicast+0x449/0x710 [ 1003.043529][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.043529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.043529][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.043529][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.043529][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.043529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.043529][ T72] [ 1003.045971][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1003.045971][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.045971][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.045971][ T72] ipv6_find_idev+0x102/0x170 [ 1003.045971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.045971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.045971][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.045971][ T72] netlink_unicast+0x449/0x710 [ 1003.045971][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.045971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.045971][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.045971][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.045971][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.045971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.045971][ T72] [ 1003.049622][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1003.051306][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1003.051306][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.051306][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.051306][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.051306][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.051306][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.051306][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.051306][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.051306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.051306][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.051306][ T72] netlink_unicast+0x449/0x710 [ 1003.051306][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.051306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.051306][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.051306][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.051306][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.051306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.051306][ T72] [ 1003.054282][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1003.054282][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.054282][ T72] ipv6_find_idev+0x102/0x170 [ 1003.054282][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.054282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.054282][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.054282][ T72] netlink_unicast+0x449/0x710 [ 1003.054282][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.054282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.054282][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.054282][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.054282][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.054282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.054282][ T72] [ 1003.055825][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1003.055825][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.055825][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.055825][ T72] ipv6_find_idev+0x102/0x170 [ 1003.055825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.055825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.055825][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.055825][ T72] netlink_unicast+0x449/0x710 [ 1003.055825][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.055825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.055825][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.055825][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.055825][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.055825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.055825][ T72] [ 1003.057597][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1003.057935][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1003.057935][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.057935][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.057935][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.057935][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.057935][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.057935][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.057935][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.057935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.057935][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.057935][ T72] netlink_unicast+0x449/0x710 [ 1003.057935][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.057935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.057935][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.057935][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.057935][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.057935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.057935][ T72] [ 1003.060203][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1003.060203][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.060203][ T72] ipv6_find_idev+0x102/0x170 [ 1003.060203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.060203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.060203][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.060203][ T72] netlink_unicast+0x449/0x710 [ 1003.060203][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.060203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.060203][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.060203][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.060203][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.060203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.060203][ T72] [ 1003.061740][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1003.061740][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.061740][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.061740][ T72] ipv6_find_idev+0x102/0x170 [ 1003.061740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.061740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.061740][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.061740][ T72] netlink_unicast+0x449/0x710 [ 1003.061740][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.061740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.061740][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.061740][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.061740][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.061740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.061740][ T72] [ 1003.063845][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1003.064180][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1003.064180][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.064180][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.064180][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.064180][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.064180][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.064180][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.064180][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.064180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.064180][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.064180][ T72] netlink_unicast+0x449/0x710 [ 1003.064180][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.064180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.064180][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.064180][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.064180][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.064180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.064180][ T72] [ 1003.066175][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1003.066175][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.066175][ T72] ipv6_find_idev+0x102/0x170 [ 1003.066175][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.066175][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.066175][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.066175][ T72] netlink_unicast+0x449/0x710 [ 1003.066175][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.066175][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.066175][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.066175][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.066175][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.066175][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.066175][ T72] [ 1003.067968][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1003.067968][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.067968][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.067968][ T72] ipv6_find_idev+0x102/0x170 [ 1003.067968][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.067968][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.067968][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.067968][ T72] netlink_unicast+0x449/0x710 [ 1003.067968][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.067968][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.067968][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.067968][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.067968][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.067968][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.067968][ T72] [ 1003.070552][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1003.070889][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1003.070889][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.070889][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.070889][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.070889][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.070889][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.070889][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.070889][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.070889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.070889][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.070889][ T72] netlink_unicast+0x449/0x710 [ 1003.070889][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.070889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.070889][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.070889][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.070889][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.070889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.070889][ T72] [ 1003.073072][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1003.073072][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.073072][ T72] ipv6_find_idev+0x102/0x170 [ 1003.073072][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.073072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.073072][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.073072][ T72] netlink_unicast+0x449/0x710 [ 1003.073072][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.073072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.073072][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.073072][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.073072][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.073072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.073072][ T72] [ 1003.074783][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1003.074783][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.074783][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.074783][ T72] ipv6_find_idev+0x102/0x170 [ 1003.074783][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.074783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.074783][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.074783][ T72] netlink_unicast+0x449/0x710 [ 1003.074783][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.074783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.074783][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.074783][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.074783][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.074783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.074783][ T72] [ 1003.076708][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1003.077154][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1003.077154][ T72] netdev_get_by_index+0x5e/0x80 [ 1003.077154][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1003.077154][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1003.077154][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1003.077154][ T72] ipv6_add_addr+0x411/0x2000 [ 1003.077154][ T72] inet6_addr_add+0x30e/0xa40 [ 1003.077154][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1003.077154][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.077154][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.077154][ T72] netlink_unicast+0x449/0x710 [ 1003.077154][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.077154][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.077154][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.077154][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.077154][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.077154][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.077154][ T72] [ 1003.079388][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1003.079388][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1003.079388][ T72] ipv6_find_idev+0x102/0x170 [ 1003.079388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.079388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.079388][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.079388][ T72] netlink_unicast+0x449/0x710 [ 1003.079388][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.079388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.079388][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.079388][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.079388][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.079388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.079388][ T72] [ 1003.081095][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1003.081095][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1003.081095][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1003.081095][ T72] ipv6_find_idev+0x102/0x170 [ 1003.081095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1003.081095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1003.081095][ T72] netlink_rcv_skb+0x130/0x360 [ 1003.081095][ T72] netlink_unicast+0x449/0x710 [ 1003.081095][ T72] netlink_sendmsg+0x723/0xbe0 [ 1003.081095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1003.081095][ T72] ___sys_sendmsg+0xee/0x170 [ 1003.081095][ T72] __sys_sendmsg+0xcd/0x170 [ 1003.081095][ T72] do_syscall_64+0xc6/0x1e0 [ 1003.081095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1003.081095][ T72] [ 1013.198926][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1013.199407][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1013.199407][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.199407][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.199407][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.199407][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.199407][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.199407][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.199407][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.199407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.199407][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.199407][ T72] netlink_unicast+0x449/0x710 [ 1013.199407][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.199407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.199407][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.199407][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.199407][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.199407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.199407][ T72] [ 1013.201405][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1013.201405][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.201405][ T72] ipv6_find_idev+0x102/0x170 [ 1013.201405][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.201405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.201405][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.201405][ T72] netlink_unicast+0x449/0x710 [ 1013.201405][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.201405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.201405][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.201405][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.201405][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.201405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.201405][ T72] [ 1013.202919][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1013.202919][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.202919][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.202919][ T72] ipv6_find_idev+0x102/0x170 [ 1013.202919][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.202919][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.202919][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.202919][ T72] netlink_unicast+0x449/0x710 [ 1013.202919][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.202919][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.202919][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.202919][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.202919][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.202919][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.202919][ T72] [ 1013.204597][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1013.204879][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1013.204879][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.204879][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.204879][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.204879][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.204879][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.204879][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.204879][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.204879][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.204879][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.204879][ T72] netlink_unicast+0x449/0x710 [ 1013.204879][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.204879][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.204879][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.204879][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.204879][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.204879][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.204879][ T72] [ 1013.206864][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1013.206864][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.206864][ T72] ipv6_find_idev+0x102/0x170 [ 1013.206864][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.206864][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.206864][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.206864][ T72] netlink_unicast+0x449/0x710 [ 1013.206864][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.206864][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.206864][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.206864][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.206864][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.206864][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.206864][ T72] [ 1013.208382][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1013.208382][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.208382][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.208382][ T72] ipv6_find_idev+0x102/0x170 [ 1013.208382][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.208382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.208382][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.208382][ T72] netlink_unicast+0x449/0x710 [ 1013.208382][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.208382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.208382][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.208382][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.208382][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.208382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.208382][ T72] [ 1013.210043][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1013.210313][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1013.210313][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.210313][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.210313][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.210313][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.210313][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.210313][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.210313][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.210313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.210313][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.210313][ T72] netlink_unicast+0x449/0x710 [ 1013.210313][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.210313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.210313][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.210313][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.210313][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.210313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.210313][ T72] [ 1013.212272][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1013.212272][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.212272][ T72] ipv6_find_idev+0x102/0x170 [ 1013.212272][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.212272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.212272][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.212272][ T72] netlink_unicast+0x449/0x710 [ 1013.212272][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.212272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.212272][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.212272][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.212272][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.212272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.212272][ T72] [ 1013.213785][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1013.213785][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.213785][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.213785][ T72] ipv6_find_idev+0x102/0x170 [ 1013.213785][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.213785][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.213785][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.213785][ T72] netlink_unicast+0x449/0x710 [ 1013.213785][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.213785][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.213785][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.213785][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.213785][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.213785][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.213785][ T72] [ 1013.215451][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1013.215714][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1013.215714][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.215714][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.215714][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.215714][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.215714][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.215714][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.215714][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.215714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.215714][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.215714][ T72] netlink_unicast+0x449/0x710 [ 1013.215714][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.215714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.215714][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.215714][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.215714][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.215714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.215714][ T72] [ 1013.217683][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1013.217683][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.217683][ T72] ipv6_find_idev+0x102/0x170 [ 1013.217683][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.217683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.217683][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.217683][ T72] netlink_unicast+0x449/0x710 [ 1013.217683][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.217683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.217683][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.217683][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.217683][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.217683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.217683][ T72] [ 1013.219195][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1013.219195][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.219195][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.219195][ T72] ipv6_find_idev+0x102/0x170 [ 1013.219195][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.219195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.219195][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.219195][ T72] netlink_unicast+0x449/0x710 [ 1013.219195][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.219195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.219195][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.219195][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.219195][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.219195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.219195][ T72] [ 1013.221258][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1013.221518][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1013.221518][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.221518][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.221518][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.221518][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.221518][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.221518][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.221518][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.221518][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.221518][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.221518][ T72] netlink_unicast+0x449/0x710 [ 1013.221518][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.221518][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.221518][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.221518][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.221518][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.221518][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.221518][ T72] [ 1013.223475][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1013.223475][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.223475][ T72] ipv6_find_idev+0x102/0x170 [ 1013.223475][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.223475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.223475][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.223475][ T72] netlink_unicast+0x449/0x710 [ 1013.223475][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.223475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.223475][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.223475][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.223475][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.223475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.223475][ T72] [ 1013.224987][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1013.224987][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.224987][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.224987][ T72] ipv6_find_idev+0x102/0x170 [ 1013.224987][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.224987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.224987][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.224987][ T72] netlink_unicast+0x449/0x710 [ 1013.224987][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.224987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.224987][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.224987][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.224987][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.224987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.224987][ T72] [ 1013.226685][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1013.227010][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1013.227010][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.227010][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.227010][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.227010][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.227010][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.227010][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.227010][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.227010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.227010][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.227010][ T72] netlink_unicast+0x449/0x710 [ 1013.227010][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.227010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.227010][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.227010][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.227010][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.227010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.227010][ T72] [ 1013.229102][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1013.229102][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.229102][ T72] ipv6_find_idev+0x102/0x170 [ 1013.229102][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.229102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.229102][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.229102][ T72] netlink_unicast+0x449/0x710 [ 1013.229102][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.229102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.229102][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.229102][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.229102][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.229102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.229102][ T72] [ 1013.230791][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1013.230791][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.230791][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.230791][ T72] ipv6_find_idev+0x102/0x170 [ 1013.230791][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.230791][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.230791][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.230791][ T72] netlink_unicast+0x449/0x710 [ 1013.230791][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.230791][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.230791][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.230791][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.230791][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.230791][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.230791][ T72] [ 1013.232670][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1013.232988][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1013.232988][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.232988][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.232988][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.232988][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.232988][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.232988][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.232988][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.232988][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.232988][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.232988][ T72] netlink_unicast+0x449/0x710 [ 1013.232988][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.232988][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.232988][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.232988][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.232988][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.232988][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.232988][ T72] [ 1013.235178][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1013.235178][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.235178][ T72] ipv6_find_idev+0x102/0x170 [ 1013.235178][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.235178][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.235178][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.235178][ T72] netlink_unicast+0x449/0x710 [ 1013.235178][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.235178][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.235178][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.235178][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.235178][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.235178][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.235178][ T72] [ 1013.236872][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1013.236872][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.236872][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.236872][ T72] ipv6_find_idev+0x102/0x170 [ 1013.236872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.236872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.236872][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.236872][ T72] netlink_unicast+0x449/0x710 [ 1013.236872][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.236872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.236872][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.236872][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.236872][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.236872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.236872][ T72] [ 1013.238758][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1013.239026][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1013.239026][ T72] netdev_get_by_index+0x5e/0x80 [ 1013.239026][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1013.239026][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1013.239026][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1013.239026][ T72] ipv6_add_addr+0x411/0x2000 [ 1013.239026][ T72] inet6_addr_add+0x30e/0xa40 [ 1013.239026][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1013.239026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.239026][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.239026][ T72] netlink_unicast+0x449/0x710 [ 1013.239026][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.239026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.239026][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.239026][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.239026][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.239026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.239026][ T72] [ 1013.241253][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1013.241253][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1013.241253][ T72] ipv6_find_idev+0x102/0x170 [ 1013.241253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.241253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.241253][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.241253][ T72] netlink_unicast+0x449/0x710 [ 1013.241253][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.241253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.241253][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.241253][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.241253][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.241253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.241253][ T72] [ 1013.242943][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1013.242943][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1013.242943][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1013.242943][ T72] ipv6_find_idev+0x102/0x170 [ 1013.242943][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1013.242943][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1013.242943][ T72] netlink_rcv_skb+0x130/0x360 [ 1013.242943][ T72] netlink_unicast+0x449/0x710 [ 1013.242943][ T72] netlink_sendmsg+0x723/0xbe0 [ 1013.242943][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1013.242943][ T72] ___sys_sendmsg+0xee/0x170 [ 1013.242943][ T72] __sys_sendmsg+0xcd/0x170 [ 1013.242943][ T72] do_syscall_64+0xc6/0x1e0 [ 1013.242943][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1013.242943][ T72] [ 1023.454902][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1023.455366][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1023.455366][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.455366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.455366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.455366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.455366][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.455366][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.455366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.455366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.455366][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.455366][ T72] netlink_unicast+0x449/0x710 [ 1023.455366][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.455366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.455366][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.455366][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.455366][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.455366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.455366][ T72] [ 1023.457884][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1023.457884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.457884][ T72] ipv6_find_idev+0x102/0x170 [ 1023.457884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.457884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.457884][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.457884][ T72] netlink_unicast+0x449/0x710 [ 1023.457884][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.457884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.457884][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.457884][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.457884][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.457884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.457884][ T72] [ 1023.459402][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1023.459402][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.459402][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.459402][ T72] ipv6_find_idev+0x102/0x170 [ 1023.459402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.459402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.459402][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.459402][ T72] netlink_unicast+0x449/0x710 [ 1023.459402][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.459402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.459402][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.459402][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.459402][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.459402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.459402][ T72] [ 1023.461075][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1023.461341][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1023.461341][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.461341][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.461341][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.461341][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.461341][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.461341][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.461341][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.461341][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.461341][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.461341][ T72] netlink_unicast+0x449/0x710 [ 1023.461341][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.461341][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.461341][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.461341][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.461341][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.461341][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.461341][ T72] [ 1023.463301][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1023.463301][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.463301][ T72] ipv6_find_idev+0x102/0x170 [ 1023.463301][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.463301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.463301][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.463301][ T72] netlink_unicast+0x449/0x710 [ 1023.463301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.463301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.463301][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.463301][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.463301][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.463301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.463301][ T72] [ 1023.464818][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1023.464818][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.464818][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.464818][ T72] ipv6_find_idev+0x102/0x170 [ 1023.464818][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.464818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.464818][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.464818][ T72] netlink_unicast+0x449/0x710 [ 1023.464818][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.464818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.464818][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.464818][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.464818][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.464818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.464818][ T72] [ 1023.466533][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1023.466808][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1023.466808][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.466808][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.466808][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.466808][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.466808][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.466808][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.466808][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.466808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.466808][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.466808][ T72] netlink_unicast+0x449/0x710 [ 1023.466808][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.466808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.466808][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.466808][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.466808][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.466808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.466808][ T72] [ 1023.468792][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1023.468792][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.468792][ T72] ipv6_find_idev+0x102/0x170 [ 1023.468792][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.468792][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.468792][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.468792][ T72] netlink_unicast+0x449/0x710 [ 1023.468792][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.468792][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.468792][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.468792][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.468792][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.468792][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.468792][ T72] [ 1023.470307][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1023.470307][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.470307][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.470307][ T72] ipv6_find_idev+0x102/0x170 [ 1023.470307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.470307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.470307][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.470307][ T72] netlink_unicast+0x449/0x710 [ 1023.470307][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.470307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.470307][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.470307][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.470307][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.470307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.470307][ T72] [ 1023.471966][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1023.472226][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1023.472226][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.472226][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.472226][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.472226][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.472226][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.472226][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.472226][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.472226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.472226][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.472226][ T72] netlink_unicast+0x449/0x710 [ 1023.472226][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.472226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.472226][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.472226][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.472226][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.472226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.472226][ T72] [ 1023.474213][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1023.474213][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.474213][ T72] ipv6_find_idev+0x102/0x170 [ 1023.474213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.474213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.474213][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.474213][ T72] netlink_unicast+0x449/0x710 [ 1023.474213][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.474213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.474213][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.474213][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.474213][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.474213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.474213][ T72] [ 1023.475763][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1023.475763][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.475763][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.475763][ T72] ipv6_find_idev+0x102/0x170 [ 1023.475763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.475763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.475763][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.475763][ T72] netlink_unicast+0x449/0x710 [ 1023.475763][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.475763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.475763][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.475763][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.475763][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.475763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.475763][ T72] [ 1023.477856][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1023.478124][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1023.478124][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.478124][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.478124][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.478124][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.478124][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.478124][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.478124][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.478124][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.478124][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.478124][ T72] netlink_unicast+0x449/0x710 [ 1023.478124][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.478124][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.478124][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.478124][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.478124][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.478124][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.478124][ T72] [ 1023.480524][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1023.480524][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.480524][ T72] ipv6_find_idev+0x102/0x170 [ 1023.480524][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.480524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.480524][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.480524][ T72] netlink_unicast+0x449/0x710 [ 1023.480524][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.480524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.480524][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.480524][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.480524][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.480524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.480524][ T72] [ 1023.482079][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1023.482079][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.482079][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.482079][ T72] ipv6_find_idev+0x102/0x170 [ 1023.482079][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.482079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.482079][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.482079][ T72] netlink_unicast+0x449/0x710 [ 1023.482079][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.482079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.482079][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.482079][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.482079][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.482079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.482079][ T72] [ 1023.483831][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1023.484096][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1023.484096][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.484096][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.484096][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.484096][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.484096][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.484096][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.484096][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.484096][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.484096][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.484096][ T72] netlink_unicast+0x449/0x710 [ 1023.484096][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.484096][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.484096][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.484096][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.484096][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.484096][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.484096][ T72] [ 1023.486220][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1023.486220][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.486220][ T72] ipv6_find_idev+0x102/0x170 [ 1023.486220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.486220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.486220][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.486220][ T72] netlink_unicast+0x449/0x710 [ 1023.486220][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.486220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.486220][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.486220][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.486220][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.486220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.486220][ T72] [ 1023.487923][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1023.487923][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.487923][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.487923][ T72] ipv6_find_idev+0x102/0x170 [ 1023.487923][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.487923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.487923][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.487923][ T72] netlink_unicast+0x449/0x710 [ 1023.487923][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.487923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.487923][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.487923][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.487923][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.487923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.487923][ T72] [ 1023.489856][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1023.490115][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1023.490115][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.490115][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.490115][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.490115][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.490115][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.490115][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.490115][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.490115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.490115][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.490115][ T72] netlink_unicast+0x449/0x710 [ 1023.490115][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.490115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.490115][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.490115][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.490115][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.490115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.490115][ T72] [ 1023.492255][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1023.492255][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.492255][ T72] ipv6_find_idev+0x102/0x170 [ 1023.492255][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.492255][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.492255][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.492255][ T72] netlink_unicast+0x449/0x710 [ 1023.492255][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.492255][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.492255][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.492255][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.492255][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.492255][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.492255][ T72] [ 1023.493974][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1023.493974][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.493974][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.493974][ T72] ipv6_find_idev+0x102/0x170 [ 1023.493974][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.493974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.493974][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.493974][ T72] netlink_unicast+0x449/0x710 [ 1023.493974][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.493974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.493974][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.493974][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.493974][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.493974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.493974][ T72] [ 1023.495874][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1023.496138][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1023.496138][ T72] netdev_get_by_index+0x5e/0x80 [ 1023.496138][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1023.496138][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1023.496138][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1023.496138][ T72] ipv6_add_addr+0x411/0x2000 [ 1023.496138][ T72] inet6_addr_add+0x30e/0xa40 [ 1023.496138][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1023.496138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.496138][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.496138][ T72] netlink_unicast+0x449/0x710 [ 1023.496138][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.496138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.496138][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.496138][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.496138][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.496138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.496138][ T72] [ 1023.498392][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1023.498392][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1023.498392][ T72] ipv6_find_idev+0x102/0x170 [ 1023.498392][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.498392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.498392][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.498392][ T72] netlink_unicast+0x449/0x710 [ 1023.498392][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.498392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.498392][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.498392][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.498392][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.498392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.498392][ T72] [ 1023.500110][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1023.500110][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1023.500110][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1023.500110][ T72] ipv6_find_idev+0x102/0x170 [ 1023.500110][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1023.500110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1023.500110][ T72] netlink_rcv_skb+0x130/0x360 [ 1023.500110][ T72] netlink_unicast+0x449/0x710 [ 1023.500110][ T72] netlink_sendmsg+0x723/0xbe0 [ 1023.500110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1023.500110][ T72] ___sys_sendmsg+0xee/0x170 [ 1023.500110][ T72] __sys_sendmsg+0xcd/0x170 [ 1023.500110][ T72] do_syscall_64+0xc6/0x1e0 [ 1023.500110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1023.500110][ T72] [ 1033.742897][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1033.743419][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1033.743419][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.743419][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.743419][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.743419][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.743419][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.743419][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.743419][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.743419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.743419][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.743419][ T72] netlink_unicast+0x449/0x710 [ 1033.743419][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.743419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.743419][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.743419][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.743419][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.743419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.743419][ T72] [ 1033.745662][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1033.745662][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.745662][ T72] ipv6_find_idev+0x102/0x170 [ 1033.745662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.745662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.745662][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.745662][ T72] netlink_unicast+0x449/0x710 [ 1033.745662][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.745662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.745662][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.745662][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.745662][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.745662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.745662][ T72] [ 1033.747379][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1033.747379][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.747379][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.747379][ T72] ipv6_find_idev+0x102/0x170 [ 1033.747379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.747379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.747379][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.747379][ T72] netlink_unicast+0x449/0x710 [ 1033.747379][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.747379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.747379][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.747379][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.747379][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.747379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.747379][ T72] [ 1033.749266][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1033.749565][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1033.749565][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.749565][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.749565][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.749565][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.749565][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.749565][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.749565][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.749565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.749565][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.749565][ T72] netlink_unicast+0x449/0x710 [ 1033.749565][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.749565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.749565][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.749565][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.749565][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.749565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.749565][ T72] [ 1033.751779][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1033.751779][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.751779][ T72] ipv6_find_idev+0x102/0x170 [ 1033.751779][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.751779][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.751779][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.751779][ T72] netlink_unicast+0x449/0x710 [ 1033.751779][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.751779][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.751779][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.751779][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.751779][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.751779][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.751779][ T72] [ 1033.753482][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1033.753482][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.753482][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.753482][ T72] ipv6_find_idev+0x102/0x170 [ 1033.753482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.753482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.753482][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.753482][ T72] netlink_unicast+0x449/0x710 [ 1033.753482][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.753482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.753482][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.753482][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.753482][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.753482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.753482][ T72] [ 1033.755340][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1033.755632][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1033.755632][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.755632][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.755632][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.755632][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.755632][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.755632][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.755632][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.755632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.755632][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.755632][ T72] netlink_unicast+0x449/0x710 [ 1033.755632][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.755632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.755632][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.755632][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.755632][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.755632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.755632][ T72] [ 1033.757882][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1033.757882][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.757882][ T72] ipv6_find_idev+0x102/0x170 [ 1033.757882][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.757882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.757882][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.757882][ T72] netlink_unicast+0x449/0x710 [ 1033.757882][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.757882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.757882][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.757882][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.757882][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.757882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.757882][ T72] [ 1033.759599][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1033.759599][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.759599][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.759599][ T72] ipv6_find_idev+0x102/0x170 [ 1033.759599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.759599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.759599][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.759599][ T72] netlink_unicast+0x449/0x710 [ 1033.759599][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.759599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.759599][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.759599][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.759599][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.759599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.759599][ T72] [ 1033.761502][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1033.761809][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1033.761809][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.761809][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.761809][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.761809][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.761809][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.761809][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.761809][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.761809][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.761809][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.761809][ T72] netlink_unicast+0x449/0x710 [ 1033.761809][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.761809][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.761809][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.761809][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.761809][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.761809][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.761809][ T72] [ 1033.764050][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1033.764050][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.764050][ T72] ipv6_find_idev+0x102/0x170 [ 1033.764050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.764050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.764050][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.764050][ T72] netlink_unicast+0x449/0x710 [ 1033.764050][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.764050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.764050][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.764050][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.764050][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.764050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.764050][ T72] [ 1033.765779][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1033.765779][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.765779][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.765779][ T72] ipv6_find_idev+0x102/0x170 [ 1033.765779][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.765779][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.765779][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.765779][ T72] netlink_unicast+0x449/0x710 [ 1033.765779][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.765779][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.765779][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.765779][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.765779][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.765779][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.765779][ T72] [ 1033.767683][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1033.768051][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1033.768051][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.768051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.768051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.768051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.768051][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.768051][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.768051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.768051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.768051][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.768051][ T72] netlink_unicast+0x449/0x710 [ 1033.768051][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.768051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.768051][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.768051][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.768051][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.768051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.768051][ T72] [ 1033.770282][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1033.770282][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.770282][ T72] ipv6_find_idev+0x102/0x170 [ 1033.770282][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.770282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.770282][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.770282][ T72] netlink_unicast+0x449/0x710 [ 1033.770282][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.770282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.770282][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.770282][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.770282][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.770282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.770282][ T72] [ 1033.772011][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1033.772011][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.772011][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.772011][ T72] ipv6_find_idev+0x102/0x170 [ 1033.772011][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.772011][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.772011][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.772011][ T72] netlink_unicast+0x449/0x710 [ 1033.772011][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.772011][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.772011][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.772011][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.772011][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.772011][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.772011][ T72] [ 1033.774201][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1033.774494][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1033.774494][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.774494][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.774494][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.774494][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.774494][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.774494][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.774494][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.774494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.774494][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.774494][ T72] netlink_unicast+0x449/0x710 [ 1033.774494][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.774494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.774494][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.774494][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.774494][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.774494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.774494][ T72] [ 1033.776913][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1033.776913][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.776913][ T72] ipv6_find_idev+0x102/0x170 [ 1033.776913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.776913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.776913][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.776913][ T72] netlink_unicast+0x449/0x710 [ 1033.776913][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.776913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.776913][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.776913][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.776913][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.776913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.776913][ T72] [ 1033.778823][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1033.778823][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.778823][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.778823][ T72] ipv6_find_idev+0x102/0x170 [ 1033.778823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.778823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.778823][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.778823][ T72] netlink_unicast+0x449/0x710 [ 1033.778823][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.778823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.778823][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.778823][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.778823][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.778823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.778823][ T72] [ 1033.780962][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1033.781253][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1033.781253][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.781253][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.781253][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.781253][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.781253][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.781253][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.781253][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.781253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.781253][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.781253][ T72] netlink_unicast+0x449/0x710 [ 1033.781253][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.781253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.781253][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.781253][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.781253][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.781253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.781253][ T72] [ 1033.783764][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1033.783764][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.783764][ T72] ipv6_find_idev+0x102/0x170 [ 1033.783764][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.783764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.783764][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.783764][ T72] netlink_unicast+0x449/0x710 [ 1033.783764][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.783764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.783764][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.783764][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.783764][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.783764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.783764][ T72] [ 1033.785732][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1033.785732][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.785732][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.785732][ T72] ipv6_find_idev+0x102/0x170 [ 1033.785732][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.785732][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.785732][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.785732][ T72] netlink_unicast+0x449/0x710 [ 1033.785732][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.785732][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.785732][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.785732][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.785732][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.785732][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.785732][ T72] [ 1033.787860][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1033.788149][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1033.788149][ T72] netdev_get_by_index+0x5e/0x80 [ 1033.788149][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1033.788149][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1033.788149][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1033.788149][ T72] ipv6_add_addr+0x411/0x2000 [ 1033.788149][ T72] inet6_addr_add+0x30e/0xa40 [ 1033.788149][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1033.788149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.788149][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.788149][ T72] netlink_unicast+0x449/0x710 [ 1033.788149][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.788149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.788149][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.788149][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.788149][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.788149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.788149][ T72] [ 1033.790600][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1033.790600][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1033.790600][ T72] ipv6_find_idev+0x102/0x170 [ 1033.790600][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.790600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.790600][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.790600][ T72] netlink_unicast+0x449/0x710 [ 1033.790600][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.790600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.790600][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.790600][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.790600][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.790600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.790600][ T72] [ 1033.792487][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1033.792487][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1033.792487][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1033.792487][ T72] ipv6_find_idev+0x102/0x170 [ 1033.792487][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1033.792487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1033.792487][ T72] netlink_rcv_skb+0x130/0x360 [ 1033.792487][ T72] netlink_unicast+0x449/0x710 [ 1033.792487][ T72] netlink_sendmsg+0x723/0xbe0 [ 1033.792487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1033.792487][ T72] ___sys_sendmsg+0xee/0x170 [ 1033.792487][ T72] __sys_sendmsg+0xcd/0x170 [ 1033.792487][ T72] do_syscall_64+0xc6/0x1e0 [ 1033.792487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1033.792487][ T72] [ 1044.014852][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1044.015315][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1044.015315][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.015315][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.015315][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.015315][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.015315][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.015315][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.015315][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.015315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.015315][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.015315][ T72] netlink_unicast+0x449/0x710 [ 1044.015315][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.015315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.015315][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.015315][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.015315][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.015315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.015315][ T72] [ 1044.017575][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1044.017575][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.017575][ T72] ipv6_find_idev+0x102/0x170 [ 1044.017575][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.017575][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.017575][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.017575][ T72] netlink_unicast+0x449/0x710 [ 1044.017575][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.017575][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.017575][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.017575][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.017575][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.017575][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.017575][ T72] [ 1044.019272][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1044.019272][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.019272][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.019272][ T72] ipv6_find_idev+0x102/0x170 [ 1044.019272][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.019272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.019272][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.019272][ T72] netlink_unicast+0x449/0x710 [ 1044.019272][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.019272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.019272][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.019272][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.019272][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.019272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.019272][ T72] [ 1044.021141][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1044.021444][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1044.021444][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.021444][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.021444][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.021444][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.021444][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.021444][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.021444][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.021444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.021444][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.021444][ T72] netlink_unicast+0x449/0x710 [ 1044.021444][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.021444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.021444][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.021444][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.021444][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.021444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.021444][ T72] [ 1044.023662][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1044.023662][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.023662][ T72] ipv6_find_idev+0x102/0x170 [ 1044.023662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.023662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.023662][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.023662][ T72] netlink_unicast+0x449/0x710 [ 1044.023662][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.023662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.023662][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.023662][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.023662][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.023662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.023662][ T72] [ 1044.025368][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1044.025368][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.025368][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.025368][ T72] ipv6_find_idev+0x102/0x170 [ 1044.025368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.025368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.025368][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.025368][ T72] netlink_unicast+0x449/0x710 [ 1044.025368][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.025368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.025368][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.025368][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.025368][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.025368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.025368][ T72] [ 1044.027265][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1044.027551][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1044.027551][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.027551][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.027551][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.027551][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.027551][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.027551][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.027551][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.027551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.027551][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.027551][ T72] netlink_unicast+0x449/0x710 [ 1044.027551][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.027551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.027551][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.027551][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.027551][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.027551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.027551][ T72] [ 1044.029754][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1044.029754][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.029754][ T72] ipv6_find_idev+0x102/0x170 [ 1044.029754][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.029754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.029754][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.029754][ T72] netlink_unicast+0x449/0x710 [ 1044.029754][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.029754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.029754][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.029754][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.029754][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.029754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.029754][ T72] [ 1044.031446][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1044.031446][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.031446][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.031446][ T72] ipv6_find_idev+0x102/0x170 [ 1044.031446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.031446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.031446][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.031446][ T72] netlink_unicast+0x449/0x710 [ 1044.031446][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.031446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.031446][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.031446][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.031446][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.031446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.031446][ T72] [ 1044.033299][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1044.033588][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1044.033588][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.033588][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.033588][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.033588][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.033588][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.033588][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.033588][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.033588][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.033588][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.033588][ T72] netlink_unicast+0x449/0x710 [ 1044.033588][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.033588][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.033588][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.033588][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.033588][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.033588][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.033588][ T72] [ 1044.035796][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1044.035796][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.035796][ T72] ipv6_find_idev+0x102/0x170 [ 1044.035796][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.035796][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.035796][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.035796][ T72] netlink_unicast+0x449/0x710 [ 1044.035796][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.035796][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.035796][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.035796][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.035796][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.035796][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.035796][ T72] [ 1044.037502][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1044.037502][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.037502][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.037502][ T72] ipv6_find_idev+0x102/0x170 [ 1044.037502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.037502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.037502][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.037502][ T72] netlink_unicast+0x449/0x710 [ 1044.037502][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.037502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.037502][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.037502][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.037502][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.037502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.037502][ T72] [ 1044.039775][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1044.040062][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1044.040062][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.040062][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.040062][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.040062][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.040062][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.040062][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.040062][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.040062][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.040062][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.040062][ T72] netlink_unicast+0x449/0x710 [ 1044.040062][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.040062][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.040062][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.040062][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.040062][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.040062][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.040062][ T72] [ 1044.042283][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1044.042283][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.042283][ T72] ipv6_find_idev+0x102/0x170 [ 1044.042283][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.042283][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.042283][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.042283][ T72] netlink_unicast+0x449/0x710 [ 1044.042283][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.042283][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.042283][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.042283][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.042283][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.042283][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.042283][ T72] [ 1044.044006][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1044.044006][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.044006][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.044006][ T72] ipv6_find_idev+0x102/0x170 [ 1044.044006][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.044006][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.044006][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.044006][ T72] netlink_unicast+0x449/0x710 [ 1044.044006][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.044006][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.044006][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.044006][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.044006][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.044006][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.044006][ T72] [ 1044.045927][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1044.046224][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1044.046224][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.046224][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.046224][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.046224][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.046224][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.046224][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.046224][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.046224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.046224][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.046224][ T72] netlink_unicast+0x449/0x710 [ 1044.046224][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.046224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.046224][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.046224][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.046224][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.046224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.046224][ T72] [ 1044.048552][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1044.048552][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.048552][ T72] ipv6_find_idev+0x102/0x170 [ 1044.048552][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.048552][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.048552][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.048552][ T72] netlink_unicast+0x449/0x710 [ 1044.048552][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.048552][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.048552][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.048552][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.048552][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.048552][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.048552][ T72] [ 1044.050491][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1044.050491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.050491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.050491][ T72] ipv6_find_idev+0x102/0x170 [ 1044.050491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.050491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.050491][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.050491][ T72] netlink_unicast+0x449/0x710 [ 1044.050491][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.050491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.050491][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.050491][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.050491][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.050491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.050491][ T72] [ 1044.052581][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1044.052924][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1044.052924][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.052924][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.052924][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.052924][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.052924][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.052924][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.052924][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.052924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.052924][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.052924][ T72] netlink_unicast+0x449/0x710 [ 1044.052924][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.052924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.052924][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.052924][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.052924][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.052924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.052924][ T72] [ 1044.055320][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1044.055320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.055320][ T72] ipv6_find_idev+0x102/0x170 [ 1044.055320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.055320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.055320][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.055320][ T72] netlink_unicast+0x449/0x710 [ 1044.055320][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.055320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.055320][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.055320][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.055320][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.055320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.055320][ T72] [ 1044.057210][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1044.057210][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.057210][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.057210][ T72] ipv6_find_idev+0x102/0x170 [ 1044.057210][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.057210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.057210][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.057210][ T72] netlink_unicast+0x449/0x710 [ 1044.057210][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.057210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.057210][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.057210][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.057210][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.057210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.057210][ T72] [ 1044.059296][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1044.059577][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1044.059577][ T72] netdev_get_by_index+0x5e/0x80 [ 1044.059577][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1044.059577][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1044.059577][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1044.059577][ T72] ipv6_add_addr+0x411/0x2000 [ 1044.059577][ T72] inet6_addr_add+0x30e/0xa40 [ 1044.059577][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1044.059577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.059577][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.059577][ T72] netlink_unicast+0x449/0x710 [ 1044.059577][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.059577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.059577][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.059577][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.059577][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.059577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.059577][ T72] [ 1044.062086][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1044.062086][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1044.062086][ T72] ipv6_find_idev+0x102/0x170 [ 1044.062086][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.062086][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.062086][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.062086][ T72] netlink_unicast+0x449/0x710 [ 1044.062086][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.062086][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.062086][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.062086][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.062086][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.062086][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.062086][ T72] [ 1044.063975][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1044.063975][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1044.063975][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1044.063975][ T72] ipv6_find_idev+0x102/0x170 [ 1044.063975][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1044.063975][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1044.063975][ T72] netlink_rcv_skb+0x130/0x360 [ 1044.063975][ T72] netlink_unicast+0x449/0x710 [ 1044.063975][ T72] netlink_sendmsg+0x723/0xbe0 [ 1044.063975][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1044.063975][ T72] ___sys_sendmsg+0xee/0x170 [ 1044.063975][ T72] __sys_sendmsg+0xcd/0x170 [ 1044.063975][ T72] do_syscall_64+0xc6/0x1e0 [ 1044.063975][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1044.063975][ T72] [ 1054.222927][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1054.223343][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1054.223343][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.223343][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.223343][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.223343][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.223343][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.223343][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.223343][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.223343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.223343][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.223343][ T72] netlink_unicast+0x449/0x710 [ 1054.223343][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.223343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.223343][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.223343][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.223343][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.223343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.223343][ T72] [ 1054.225373][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1054.225373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.225373][ T72] ipv6_find_idev+0x102/0x170 [ 1054.225373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.225373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.225373][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.225373][ T72] netlink_unicast+0x449/0x710 [ 1054.225373][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.225373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.225373][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.225373][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.225373][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.225373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.225373][ T72] [ 1054.227045][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1054.227045][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.227045][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.227045][ T72] ipv6_find_idev+0x102/0x170 [ 1054.227045][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.227045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.227045][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.227045][ T72] netlink_unicast+0x449/0x710 [ 1054.227045][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.227045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.227045][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.227045][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.227045][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.227045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.227045][ T72] [ 1054.228706][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1054.228992][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1054.228992][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.228992][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.228992][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.228992][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.228992][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.228992][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.228992][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.228992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.228992][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.228992][ T72] netlink_unicast+0x449/0x710 [ 1054.228992][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.228992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.228992][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.228992][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.228992][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.228992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.228992][ T72] [ 1054.230962][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1054.230962][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.230962][ T72] ipv6_find_idev+0x102/0x170 [ 1054.230962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.230962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.230962][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.230962][ T72] netlink_unicast+0x449/0x710 [ 1054.230962][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.230962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.230962][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.230962][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.230962][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.230962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.230962][ T72] [ 1054.232499][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1054.232499][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.232499][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.232499][ T72] ipv6_find_idev+0x102/0x170 [ 1054.232499][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.232499][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.232499][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.232499][ T72] netlink_unicast+0x449/0x710 [ 1054.232499][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.232499][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.232499][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.232499][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.232499][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.232499][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.232499][ T72] [ 1054.234171][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1054.234435][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1054.234435][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.234435][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.234435][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.234435][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.234435][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.234435][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.234435][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.234435][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.234435][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.234435][ T72] netlink_unicast+0x449/0x710 [ 1054.234435][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.234435][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.234435][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.234435][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.234435][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.234435][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.234435][ T72] [ 1054.236423][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1054.236423][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.236423][ T72] ipv6_find_idev+0x102/0x170 [ 1054.236423][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.236423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.236423][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.236423][ T72] netlink_unicast+0x449/0x710 [ 1054.236423][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.236423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.236423][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.236423][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.236423][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.236423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.236423][ T72] [ 1054.237937][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1054.237937][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.237937][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.237937][ T72] ipv6_find_idev+0x102/0x170 [ 1054.237937][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.237937][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.237937][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.237937][ T72] netlink_unicast+0x449/0x710 [ 1054.237937][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.237937][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.237937][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.237937][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.237937][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.237937][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.237937][ T72] [ 1054.239592][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1054.240288][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1054.240288][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.240288][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.240288][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.240288][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.240288][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.240288][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.240288][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.240288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.240288][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.240288][ T72] netlink_unicast+0x449/0x710 [ 1054.240288][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.240288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.240288][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.240288][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.240288][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.240288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.240288][ T72] [ 1054.242240][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1054.242240][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.242240][ T72] ipv6_find_idev+0x102/0x170 [ 1054.242240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.242240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.242240][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.242240][ T72] netlink_unicast+0x449/0x710 [ 1054.242240][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.242240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.242240][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.242240][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.242240][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.242240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.242240][ T72] [ 1054.243751][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1054.243751][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.243751][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.243751][ T72] ipv6_find_idev+0x102/0x170 [ 1054.243751][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.243751][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.243751][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.243751][ T72] netlink_unicast+0x449/0x710 [ 1054.243751][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.243751][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.243751][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.243751][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.243751][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.243751][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.243751][ T72] [ 1054.245447][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1054.245708][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1054.245708][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.245708][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.245708][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.245708][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.245708][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.245708][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.245708][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.245708][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.245708][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.245708][ T72] netlink_unicast+0x449/0x710 [ 1054.245708][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.245708][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.245708][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.245708][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.245708][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.245708][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.245708][ T72] [ 1054.247670][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1054.247670][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.247670][ T72] ipv6_find_idev+0x102/0x170 [ 1054.247670][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.247670][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.247670][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.247670][ T72] netlink_unicast+0x449/0x710 [ 1054.247670][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.247670][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.247670][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.247670][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.247670][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.247670][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.247670][ T72] [ 1054.249182][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1054.249182][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.249182][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.249182][ T72] ipv6_find_idev+0x102/0x170 [ 1054.249182][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.249182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.249182][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.249182][ T72] netlink_unicast+0x449/0x710 [ 1054.249182][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.249182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.249182][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.249182][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.249182][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.249182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.249182][ T72] [ 1054.250877][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1054.251144][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1054.251144][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.251144][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.251144][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.251144][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.251144][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.251144][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.251144][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.251144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.251144][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.251144][ T72] netlink_unicast+0x449/0x710 [ 1054.251144][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.251144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.251144][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.251144][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.251144][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.251144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.251144][ T72] [ 1054.253217][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1054.253217][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.253217][ T72] ipv6_find_idev+0x102/0x170 [ 1054.253217][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.253217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.253217][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.253217][ T72] netlink_unicast+0x449/0x710 [ 1054.253217][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.253217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.253217][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.253217][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.253217][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.253217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.253217][ T72] [ 1054.254908][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1054.254908][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.254908][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.254908][ T72] ipv6_find_idev+0x102/0x170 [ 1054.254908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.254908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.254908][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.254908][ T72] netlink_unicast+0x449/0x710 [ 1054.254908][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.254908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.254908][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.254908][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.254908][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.254908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.254908][ T72] [ 1054.256867][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1054.257137][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1054.257137][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.257137][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.257137][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.257137][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.257137][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.257137][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.257137][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.257137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.257137][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.257137][ T72] netlink_unicast+0x449/0x710 [ 1054.257137][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.257137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.257137][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.257137][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.257137][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.257137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.257137][ T72] [ 1054.259333][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1054.259333][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.259333][ T72] ipv6_find_idev+0x102/0x170 [ 1054.259333][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.259333][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.259333][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.259333][ T72] netlink_unicast+0x449/0x710 [ 1054.259333][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.259333][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.259333][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.259333][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.259333][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.259333][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.259333][ T72] [ 1054.261018][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1054.261018][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.261018][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.261018][ T72] ipv6_find_idev+0x102/0x170 [ 1054.261018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.261018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.261018][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.261018][ T72] netlink_unicast+0x449/0x710 [ 1054.261018][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.261018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.261018][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.261018][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.261018][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.261018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.261018][ T72] [ 1054.262912][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1054.263228][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1054.263228][ T72] netdev_get_by_index+0x5e/0x80 [ 1054.263228][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1054.263228][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1054.263228][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1054.263228][ T72] ipv6_add_addr+0x411/0x2000 [ 1054.263228][ T72] inet6_addr_add+0x30e/0xa40 [ 1054.263228][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1054.263228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.263228][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.263228][ T72] netlink_unicast+0x449/0x710 [ 1054.263228][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.263228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.263228][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.263228][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.263228][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.263228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.263228][ T72] [ 1054.265358][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1054.265358][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1054.265358][ T72] ipv6_find_idev+0x102/0x170 [ 1054.265358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.265358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.265358][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.265358][ T72] netlink_unicast+0x449/0x710 [ 1054.265358][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.265358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.265358][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.265358][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.265358][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.265358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.265358][ T72] [ 1054.267105][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1054.267105][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1054.267105][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1054.267105][ T72] ipv6_find_idev+0x102/0x170 [ 1054.267105][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1054.267105][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1054.267105][ T72] netlink_rcv_skb+0x130/0x360 [ 1054.267105][ T72] netlink_unicast+0x449/0x710 [ 1054.267105][ T72] netlink_sendmsg+0x723/0xbe0 [ 1054.267105][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1054.267105][ T72] ___sys_sendmsg+0xee/0x170 [ 1054.267105][ T72] __sys_sendmsg+0xcd/0x170 [ 1054.267105][ T72] do_syscall_64+0xc6/0x1e0 [ 1054.267105][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1054.267105][ T72] [ 1064.510865][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1064.511291][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1064.511291][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.511291][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.511291][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.511291][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.511291][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.511291][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.511291][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.511291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.511291][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.511291][ T72] netlink_unicast+0x449/0x710 [ 1064.511291][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.511291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.511291][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.511291][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.511291][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.511291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.511291][ T72] [ 1064.513320][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1064.513320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.513320][ T72] ipv6_find_idev+0x102/0x170 [ 1064.513320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.513320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.513320][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.513320][ T72] netlink_unicast+0x449/0x710 [ 1064.513320][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.513320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.513320][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.513320][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.513320][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.513320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.513320][ T72] [ 1064.514860][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1064.514860][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.514860][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.514860][ T72] ipv6_find_idev+0x102/0x170 [ 1064.514860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.514860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.514860][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.514860][ T72] netlink_unicast+0x449/0x710 [ 1064.514860][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.514860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.514860][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.514860][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.514860][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.514860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.514860][ T72] [ 1064.516578][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1064.516872][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1064.516872][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.516872][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.516872][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.516872][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.516872][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.516872][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.516872][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.516872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.516872][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.516872][ T72] netlink_unicast+0x449/0x710 [ 1064.516872][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.516872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.516872][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.516872][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.516872][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.516872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.516872][ T72] [ 1064.518873][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1064.518873][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.518873][ T72] ipv6_find_idev+0x102/0x170 [ 1064.518873][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.518873][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.518873][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.518873][ T72] netlink_unicast+0x449/0x710 [ 1064.518873][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.518873][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.518873][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.518873][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.518873][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.518873][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.518873][ T72] [ 1064.520407][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1064.520407][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.520407][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.520407][ T72] ipv6_find_idev+0x102/0x170 [ 1064.520407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.520407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.520407][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.520407][ T72] netlink_unicast+0x449/0x710 [ 1064.520407][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.520407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.520407][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.520407][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.520407][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.520407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.520407][ T72] [ 1064.522083][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1064.522348][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1064.522348][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.522348][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.522348][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.522348][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.522348][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.522348][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.522348][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.522348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.522348][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.522348][ T72] netlink_unicast+0x449/0x710 [ 1064.522348][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.522348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.522348][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.522348][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.522348][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.522348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.522348][ T72] [ 1064.524328][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1064.524328][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.524328][ T72] ipv6_find_idev+0x102/0x170 [ 1064.524328][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.524328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.524328][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.524328][ T72] netlink_unicast+0x449/0x710 [ 1064.524328][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.524328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.524328][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.524328][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.524328][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.524328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.524328][ T72] [ 1064.525859][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1064.525859][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.525859][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.525859][ T72] ipv6_find_idev+0x102/0x170 [ 1064.525859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.525859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.525859][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.525859][ T72] netlink_unicast+0x449/0x710 [ 1064.525859][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.525859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.525859][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.525859][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.525859][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.525859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.525859][ T72] [ 1064.527543][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1064.528243][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1064.528243][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.528243][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.528243][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.528243][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.528243][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.528243][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.528243][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.528243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.528243][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.528243][ T72] netlink_unicast+0x449/0x710 [ 1064.528243][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.528243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.528243][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.528243][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.528243][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.528243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.528243][ T72] [ 1064.530239][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1064.530239][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.530239][ T72] ipv6_find_idev+0x102/0x170 [ 1064.530239][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.530239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.530239][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.530239][ T72] netlink_unicast+0x449/0x710 [ 1064.530239][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.530239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.530239][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.530239][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.530239][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.530239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.530239][ T72] [ 1064.531764][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1064.531764][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.531764][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.531764][ T72] ipv6_find_idev+0x102/0x170 [ 1064.531764][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.531764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.531764][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.531764][ T72] netlink_unicast+0x449/0x710 [ 1064.531764][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.531764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.531764][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.531764][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.531764][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.531764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.531764][ T72] [ 1064.533496][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1064.533815][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1064.533815][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.533815][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.533815][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.533815][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.533815][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.533815][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.533815][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.533815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.533815][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.533815][ T72] netlink_unicast+0x449/0x710 [ 1064.533815][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.533815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.533815][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.533815][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.533815][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.533815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.533815][ T72] [ 1064.535808][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1064.535808][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.535808][ T72] ipv6_find_idev+0x102/0x170 [ 1064.535808][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.535808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.535808][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.535808][ T72] netlink_unicast+0x449/0x710 [ 1064.535808][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.535808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.535808][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.535808][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.535808][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.535808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.535808][ T72] [ 1064.537348][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1064.537348][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.537348][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.537348][ T72] ipv6_find_idev+0x102/0x170 [ 1064.537348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.537348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.537348][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.537348][ T72] netlink_unicast+0x449/0x710 [ 1064.537348][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.537348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.537348][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.537348][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.537348][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.537348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.537348][ T72] [ 1064.539066][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1064.539376][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1064.539376][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.539376][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.539376][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.539376][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.539376][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.539376][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.539376][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.539376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.539376][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.539376][ T72] netlink_unicast+0x449/0x710 [ 1064.539376][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.539376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.539376][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.539376][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.539376][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.539376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.539376][ T72] [ 1064.541355][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1064.541355][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.541355][ T72] ipv6_find_idev+0x102/0x170 [ 1064.541355][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.541355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.541355][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.541355][ T72] netlink_unicast+0x449/0x710 [ 1064.541355][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.541355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.541355][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.541355][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.541355][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.541355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.541355][ T72] [ 1064.543072][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1064.543072][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.543072][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.543072][ T72] ipv6_find_idev+0x102/0x170 [ 1064.543072][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.543072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.543072][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.543072][ T72] netlink_unicast+0x449/0x710 [ 1064.543072][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.543072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.543072][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.543072][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.543072][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.543072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.543072][ T72] [ 1064.545038][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1064.545349][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1064.545349][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.545349][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.545349][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.545349][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.545349][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.545349][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.545349][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.545349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.545349][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.545349][ T72] netlink_unicast+0x449/0x710 [ 1064.545349][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.545349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.545349][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.545349][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.545349][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.545349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.545349][ T72] [ 1064.547587][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1064.547587][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.547587][ T72] ipv6_find_idev+0x102/0x170 [ 1064.547587][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.547587][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.547587][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.547587][ T72] netlink_unicast+0x449/0x710 [ 1064.547587][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.547587][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.547587][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.547587][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.547587][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.547587][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.547587][ T72] [ 1064.549296][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1064.549296][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.549296][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.549296][ T72] ipv6_find_idev+0x102/0x170 [ 1064.549296][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.549296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.549296][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.549296][ T72] netlink_unicast+0x449/0x710 [ 1064.549296][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.549296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.549296][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.549296][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.549296][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.549296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.549296][ T72] [ 1064.551190][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1064.551510][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1064.551510][ T72] netdev_get_by_index+0x5e/0x80 [ 1064.551510][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1064.551510][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1064.551510][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1064.551510][ T72] ipv6_add_addr+0x411/0x2000 [ 1064.551510][ T72] inet6_addr_add+0x30e/0xa40 [ 1064.551510][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1064.551510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.551510][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.551510][ T72] netlink_unicast+0x449/0x710 [ 1064.551510][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.551510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.551510][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.551510][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.551510][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.551510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.551510][ T72] [ 1064.553703][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1064.553703][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1064.553703][ T72] ipv6_find_idev+0x102/0x170 [ 1064.553703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.553703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.553703][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.553703][ T72] netlink_unicast+0x449/0x710 [ 1064.553703][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.553703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.553703][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.553703][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.553703][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.553703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.553703][ T72] [ 1064.555421][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1064.555421][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1064.555421][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1064.555421][ T72] ipv6_find_idev+0x102/0x170 [ 1064.555421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1064.555421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1064.555421][ T72] netlink_rcv_skb+0x130/0x360 [ 1064.555421][ T72] netlink_unicast+0x449/0x710 [ 1064.555421][ T72] netlink_sendmsg+0x723/0xbe0 [ 1064.555421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1064.555421][ T72] ___sys_sendmsg+0xee/0x170 [ 1064.555421][ T72] __sys_sendmsg+0xcd/0x170 [ 1064.555421][ T72] do_syscall_64+0xc6/0x1e0 [ 1064.555421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1064.555421][ T72] [ 1074.798905][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1074.799501][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1074.799501][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.799501][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.799501][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.799501][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.799501][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.799501][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.799501][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.799501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.799501][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.799501][ T72] netlink_unicast+0x449/0x710 [ 1074.799501][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.799501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.799501][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.799501][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.799501][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.799501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.799501][ T72] [ 1074.802037][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1074.802037][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.802037][ T72] ipv6_find_idev+0x102/0x170 [ 1074.802037][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.802037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.802037][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.802037][ T72] netlink_unicast+0x449/0x710 [ 1074.802037][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.802037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.802037][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.802037][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.802037][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.802037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.802037][ T72] [ 1074.803586][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1074.803586][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.803586][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.803586][ T72] ipv6_find_idev+0x102/0x170 [ 1074.803586][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.803586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.803586][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.803586][ T72] netlink_unicast+0x449/0x710 [ 1074.803586][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.803586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.803586][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.803586][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.803586][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.803586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.803586][ T72] [ 1074.805631][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1074.806115][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1074.806115][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.806115][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.806115][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.806115][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.806115][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.806115][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.806115][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.806115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.806115][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.806115][ T72] netlink_unicast+0x449/0x710 [ 1074.806115][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.806115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.806115][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.806115][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.806115][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.806115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.806115][ T72] [ 1074.808184][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1074.808184][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.808184][ T72] ipv6_find_idev+0x102/0x170 [ 1074.808184][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.808184][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.808184][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.808184][ T72] netlink_unicast+0x449/0x710 [ 1074.808184][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.808184][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.808184][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.808184][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.808184][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.808184][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.808184][ T72] [ 1074.809743][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1074.809743][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.809743][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.809743][ T72] ipv6_find_idev+0x102/0x170 [ 1074.809743][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.809743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.809743][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.809743][ T72] netlink_unicast+0x449/0x710 [ 1074.809743][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.809743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.809743][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.809743][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.809743][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.809743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.809743][ T72] [ 1074.811478][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1074.811754][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1074.811754][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.811754][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.811754][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.811754][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.811754][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.811754][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.811754][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.811754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.811754][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.811754][ T72] netlink_unicast+0x449/0x710 [ 1074.811754][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.811754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.811754][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.811754][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.811754][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.811754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.811754][ T72] [ 1074.814380][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1074.814380][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.814380][ T72] ipv6_find_idev+0x102/0x170 [ 1074.814380][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.814380][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.814380][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.814380][ T72] netlink_unicast+0x449/0x710 [ 1074.814380][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.814380][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.814380][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.814380][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.814380][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.814380][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.814380][ T72] [ 1074.816233][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1074.816233][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.816233][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.816233][ T72] ipv6_find_idev+0x102/0x170 [ 1074.816233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.816233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.816233][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.816233][ T72] netlink_unicast+0x449/0x710 [ 1074.816233][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.816233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.816233][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.816233][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.816233][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.816233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.816233][ T72] [ 1074.817979][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1074.818253][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1074.818253][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.818253][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.818253][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.818253][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.818253][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.818253][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.818253][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.818253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.818253][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.818253][ T72] netlink_unicast+0x449/0x710 [ 1074.818253][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.818253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.818253][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.818253][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.818253][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.818253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.818253][ T72] [ 1074.820312][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1074.820312][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.820312][ T72] ipv6_find_idev+0x102/0x170 [ 1074.820312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.820312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.820312][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.820312][ T72] netlink_unicast+0x449/0x710 [ 1074.820312][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.820312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.820312][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.820312][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.820312][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.820312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.820312][ T72] [ 1074.822033][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1074.822033][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.822033][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.822033][ T72] ipv6_find_idev+0x102/0x170 [ 1074.822033][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.822033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.822033][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.822033][ T72] netlink_unicast+0x449/0x710 [ 1074.822033][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.822033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.822033][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.822033][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.822033][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.822033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.822033][ T72] [ 1074.824192][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1074.824821][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1074.824821][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.824821][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.824821][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.824821][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.824821][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.824821][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.824821][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.824821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.824821][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.824821][ T72] netlink_unicast+0x449/0x710 [ 1074.824821][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.824821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.824821][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.824821][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.824821][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.824821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.824821][ T72] [ 1074.826901][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1074.826901][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.826901][ T72] ipv6_find_idev+0x102/0x170 [ 1074.826901][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.826901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.826901][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.826901][ T72] netlink_unicast+0x449/0x710 [ 1074.826901][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.826901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.826901][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.826901][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.826901][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.826901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.826901][ T72] [ 1074.828460][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1074.828460][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.828460][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.828460][ T72] ipv6_find_idev+0x102/0x170 [ 1074.828460][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.828460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.828460][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.828460][ T72] netlink_unicast+0x449/0x710 [ 1074.828460][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.828460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.828460][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.828460][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.828460][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.828460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.828460][ T72] [ 1074.830299][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1074.830575][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1074.830575][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.830575][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.830575][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.830575][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.830575][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.830575][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.830575][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.830575][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.830575][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.830575][ T72] netlink_unicast+0x449/0x710 [ 1074.830575][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.830575][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.830575][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.830575][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.830575][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.830575][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.830575][ T72] [ 1074.832624][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1074.832624][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.832624][ T72] ipv6_find_idev+0x102/0x170 [ 1074.832624][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.832624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.832624][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.832624][ T72] netlink_unicast+0x449/0x710 [ 1074.832624][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.832624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.832624][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.832624][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.832624][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.832624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.832624][ T72] [ 1074.834274][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1074.834274][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.834274][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.834274][ T72] ipv6_find_idev+0x102/0x170 [ 1074.834274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.834274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.834274][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.834274][ T72] netlink_unicast+0x449/0x710 [ 1074.834274][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.834274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.834274][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.834274][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.834274][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.834274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.834274][ T72] [ 1074.836248][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1074.836562][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1074.836562][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.836562][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.836562][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.836562][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.836562][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.836562][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.836562][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.836562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.836562][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.836562][ T72] netlink_unicast+0x449/0x710 [ 1074.836562][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.836562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.836562][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.836562][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.836562][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.836562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.836562][ T72] [ 1074.838941][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1074.838941][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.838941][ T72] ipv6_find_idev+0x102/0x170 [ 1074.838941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.838941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.838941][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.838941][ T72] netlink_unicast+0x449/0x710 [ 1074.838941][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.838941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.838941][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.838941][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.838941][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.838941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.838941][ T72] [ 1074.840683][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1074.840683][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.840683][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.840683][ T72] ipv6_find_idev+0x102/0x170 [ 1074.840683][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.840683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.840683][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.840683][ T72] netlink_unicast+0x449/0x710 [ 1074.840683][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.840683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.840683][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.840683][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.840683][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.840683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.840683][ T72] [ 1074.842723][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1074.843052][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1074.843052][ T72] netdev_get_by_index+0x5e/0x80 [ 1074.843052][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1074.843052][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1074.843052][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1074.843052][ T72] ipv6_add_addr+0x411/0x2000 [ 1074.843052][ T72] inet6_addr_add+0x30e/0xa40 [ 1074.843052][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1074.843052][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.843052][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.843052][ T72] netlink_unicast+0x449/0x710 [ 1074.843052][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.843052][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.843052][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.843052][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.843052][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.843052][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.843052][ T72] [ 1074.845261][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1074.845261][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1074.845261][ T72] ipv6_find_idev+0x102/0x170 [ 1074.845261][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.845261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.845261][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.845261][ T72] netlink_unicast+0x449/0x710 [ 1074.845261][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.845261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.845261][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.845261][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.845261][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.845261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.845261][ T72] [ 1074.847002][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1074.847002][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1074.847002][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1074.847002][ T72] ipv6_find_idev+0x102/0x170 [ 1074.847002][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1074.847002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1074.847002][ T72] netlink_rcv_skb+0x130/0x360 [ 1074.847002][ T72] netlink_unicast+0x449/0x710 [ 1074.847002][ T72] netlink_sendmsg+0x723/0xbe0 [ 1074.847002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1074.847002][ T72] ___sys_sendmsg+0xee/0x170 [ 1074.847002][ T72] __sys_sendmsg+0xcd/0x170 [ 1074.847002][ T72] do_syscall_64+0xc6/0x1e0 [ 1074.847002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1074.847002][ T72] [ 1085.086887][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1085.087298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1085.087298][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.087298][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.087298][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.087298][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.087298][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.087298][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.087298][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.087298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.087298][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.087298][ T72] netlink_unicast+0x449/0x710 [ 1085.087298][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.087298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.087298][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.087298][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.087298][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.087298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.087298][ T72] [ 1085.089323][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1085.089323][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.089323][ T72] ipv6_find_idev+0x102/0x170 [ 1085.089323][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.089323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.089323][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.089323][ T72] netlink_unicast+0x449/0x710 [ 1085.089323][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.089323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.089323][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.089323][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.089323][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.089323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.089323][ T72] [ 1085.090867][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1085.090867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.090867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.090867][ T72] ipv6_find_idev+0x102/0x170 [ 1085.090867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.090867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.090867][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.090867][ T72] netlink_unicast+0x449/0x710 [ 1085.090867][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.090867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.090867][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.090867][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.090867][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.090867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.090867][ T72] [ 1085.092556][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1085.092860][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1085.092860][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.092860][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.092860][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.092860][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.092860][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.092860][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.092860][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.092860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.092860][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.092860][ T72] netlink_unicast+0x449/0x710 [ 1085.092860][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.092860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.092860][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.092860][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.092860][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.092860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.092860][ T72] [ 1085.094833][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1085.094833][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.094833][ T72] ipv6_find_idev+0x102/0x170 [ 1085.094833][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.094833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.094833][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.094833][ T72] netlink_unicast+0x449/0x710 [ 1085.094833][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.094833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.094833][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.094833][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.094833][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.094833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.094833][ T72] [ 1085.096372][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1085.096372][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.096372][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.096372][ T72] ipv6_find_idev+0x102/0x170 [ 1085.096372][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.096372][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.096372][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.096372][ T72] netlink_unicast+0x449/0x710 [ 1085.096372][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.096372][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.096372][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.096372][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.096372][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.096372][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.096372][ T72] [ 1085.098036][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1085.098304][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1085.098304][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.098304][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.098304][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.098304][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.098304][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.098304][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.098304][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.098304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.098304][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.098304][ T72] netlink_unicast+0x449/0x710 [ 1085.098304][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.098304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.098304][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.098304][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.098304][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.098304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.098304][ T72] [ 1085.100292][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1085.100292][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.100292][ T72] ipv6_find_idev+0x102/0x170 [ 1085.100292][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.100292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.100292][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.100292][ T72] netlink_unicast+0x449/0x710 [ 1085.100292][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.100292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.100292][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.100292][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.100292][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.100292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.100292][ T72] [ 1085.101813][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1085.101813][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.101813][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.101813][ T72] ipv6_find_idev+0x102/0x170 [ 1085.101813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.101813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.101813][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.101813][ T72] netlink_unicast+0x449/0x710 [ 1085.101813][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.101813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.101813][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.101813][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.101813][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.101813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.101813][ T72] [ 1085.103481][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1085.103750][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1085.103750][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.103750][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.103750][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.103750][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.103750][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.103750][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.103750][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.103750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.103750][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.103750][ T72] netlink_unicast+0x449/0x710 [ 1085.103750][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.103750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.103750][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.103750][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.103750][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.103750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.103750][ T72] [ 1085.105728][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1085.105728][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.105728][ T72] ipv6_find_idev+0x102/0x170 [ 1085.105728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.105728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.105728][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.105728][ T72] netlink_unicast+0x449/0x710 [ 1085.105728][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.105728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.105728][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.105728][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.105728][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.105728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.105728][ T72] [ 1085.107265][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1085.107265][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.107265][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.107265][ T72] ipv6_find_idev+0x102/0x170 [ 1085.107265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.107265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.107265][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.107265][ T72] netlink_unicast+0x449/0x710 [ 1085.107265][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.107265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.107265][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.107265][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.107265][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.107265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.107265][ T72] [ 1085.109388][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1085.109651][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1085.109651][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.109651][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.109651][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.109651][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.109651][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.109651][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.109651][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.109651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.109651][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.109651][ T72] netlink_unicast+0x449/0x710 [ 1085.109651][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.109651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.109651][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.109651][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.109651][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.109651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.109651][ T72] [ 1085.111612][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1085.111612][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.111612][ T72] ipv6_find_idev+0x102/0x170 [ 1085.111612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.111612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.111612][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.111612][ T72] netlink_unicast+0x449/0x710 [ 1085.111612][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.111612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.111612][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.111612][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.111612][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.111612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.111612][ T72] [ 1085.113131][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1085.113131][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.113131][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.113131][ T72] ipv6_find_idev+0x102/0x170 [ 1085.113131][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.113131][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.113131][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.113131][ T72] netlink_unicast+0x449/0x710 [ 1085.113131][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.113131][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.113131][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.113131][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.113131][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.113131][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.113131][ T72] [ 1085.114845][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1085.115103][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1085.115103][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.115103][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.115103][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.115103][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.115103][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.115103][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.115103][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.115103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.115103][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.115103][ T72] netlink_unicast+0x449/0x710 [ 1085.115103][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.115103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.115103][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.115103][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.115103][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.115103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.115103][ T72] [ 1085.117203][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1085.117203][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.117203][ T72] ipv6_find_idev+0x102/0x170 [ 1085.117203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.117203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.117203][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.117203][ T72] netlink_unicast+0x449/0x710 [ 1085.117203][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.117203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.117203][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.117203][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.117203][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.117203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.117203][ T72] [ 1085.118962][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1085.118962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.118962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.118962][ T72] ipv6_find_idev+0x102/0x170 [ 1085.118962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.118962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.118962][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.118962][ T72] netlink_unicast+0x449/0x710 [ 1085.118962][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.118962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.118962][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.118962][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.118962][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.118962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.118962][ T72] [ 1085.120898][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1085.121167][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1085.121167][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.121167][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.121167][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.121167][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.121167][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.121167][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.121167][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.121167][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.121167][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.121167][ T72] netlink_unicast+0x449/0x710 [ 1085.121167][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.121167][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.121167][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.121167][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.121167][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.121167][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.121167][ T72] [ 1085.123275][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1085.123275][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.123275][ T72] ipv6_find_idev+0x102/0x170 [ 1085.123275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.123275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.123275][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.123275][ T72] netlink_unicast+0x449/0x710 [ 1085.123275][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.123275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.123275][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.123275][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.123275][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.123275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.123275][ T72] [ 1085.124976][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1085.124976][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.124976][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.124976][ T72] ipv6_find_idev+0x102/0x170 [ 1085.124976][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.124976][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.124976][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.124976][ T72] netlink_unicast+0x449/0x710 [ 1085.124976][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.124976][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.124976][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.124976][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.124976][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.124976][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.124976][ T72] [ 1085.126871][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1085.127130][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1085.127130][ T72] netdev_get_by_index+0x5e/0x80 [ 1085.127130][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1085.127130][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1085.127130][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1085.127130][ T72] ipv6_add_addr+0x411/0x2000 [ 1085.127130][ T72] inet6_addr_add+0x30e/0xa40 [ 1085.127130][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1085.127130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.127130][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.127130][ T72] netlink_unicast+0x449/0x710 [ 1085.127130][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.127130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.127130][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.127130][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.127130][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.127130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.127130][ T72] [ 1085.129392][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1085.129392][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1085.129392][ T72] ipv6_find_idev+0x102/0x170 [ 1085.129392][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.129392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.129392][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.129392][ T72] netlink_unicast+0x449/0x710 [ 1085.129392][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.129392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.129392][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.129392][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.129392][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.129392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.129392][ T72] [ 1085.131144][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1085.131144][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1085.131144][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1085.131144][ T72] ipv6_find_idev+0x102/0x170 [ 1085.131144][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1085.131144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1085.131144][ T72] netlink_rcv_skb+0x130/0x360 [ 1085.131144][ T72] netlink_unicast+0x449/0x710 [ 1085.131144][ T72] netlink_sendmsg+0x723/0xbe0 [ 1085.131144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1085.131144][ T72] ___sys_sendmsg+0xee/0x170 [ 1085.131144][ T72] __sys_sendmsg+0xcd/0x170 [ 1085.131144][ T72] do_syscall_64+0xc6/0x1e0 [ 1085.131144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1085.131144][ T72] [ 1095.374870][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1095.375373][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1095.375373][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.375373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.375373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.375373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.375373][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.375373][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.375373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.375373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.375373][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.375373][ T72] netlink_unicast+0x449/0x710 [ 1095.375373][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.375373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.375373][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.375373][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.375373][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.375373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.375373][ T72] [ 1095.377608][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1095.377608][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.377608][ T72] ipv6_find_idev+0x102/0x170 [ 1095.377608][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.377608][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.377608][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.377608][ T72] netlink_unicast+0x449/0x710 [ 1095.377608][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.377608][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.377608][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.377608][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.377608][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.377608][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.377608][ T72] [ 1095.379311][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1095.379311][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.379311][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.379311][ T72] ipv6_find_idev+0x102/0x170 [ 1095.379311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.379311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.379311][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.379311][ T72] netlink_unicast+0x449/0x710 [ 1095.379311][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.379311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.379311][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.379311][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.379311][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.379311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.379311][ T72] [ 1095.381204][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1095.381494][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1095.381494][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.381494][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.381494][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.381494][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.381494][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.381494][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.381494][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.381494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.381494][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.381494][ T72] netlink_unicast+0x449/0x710 [ 1095.381494][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.381494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.381494][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.381494][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.381494][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.381494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.381494][ T72] [ 1095.383703][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1095.383703][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.383703][ T72] ipv6_find_idev+0x102/0x170 [ 1095.383703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.383703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.383703][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.383703][ T72] netlink_unicast+0x449/0x710 [ 1095.383703][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.383703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.383703][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.383703][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.383703][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.383703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.383703][ T72] [ 1095.385394][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1095.385394][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.385394][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.385394][ T72] ipv6_find_idev+0x102/0x170 [ 1095.385394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.385394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.385394][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.385394][ T72] netlink_unicast+0x449/0x710 [ 1095.385394][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.385394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.385394][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.385394][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.385394][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.385394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.385394][ T72] [ 1095.387231][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1095.387520][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1095.387520][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.387520][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.387520][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.387520][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.387520][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.387520][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.387520][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.387520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.387520][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.387520][ T72] netlink_unicast+0x449/0x710 [ 1095.387520][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.387520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.387520][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.387520][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.387520][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.387520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.387520][ T72] [ 1095.389724][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1095.389724][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.389724][ T72] ipv6_find_idev+0x102/0x170 [ 1095.389724][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.389724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.389724][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.389724][ T72] netlink_unicast+0x449/0x710 [ 1095.389724][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.389724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.389724][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.389724][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.389724][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.389724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.389724][ T72] [ 1095.391419][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1095.391419][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.391419][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.391419][ T72] ipv6_find_idev+0x102/0x170 [ 1095.391419][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.391419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.391419][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.391419][ T72] netlink_unicast+0x449/0x710 [ 1095.391419][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.391419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.391419][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.391419][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.391419][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.391419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.391419][ T72] [ 1095.393277][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1095.393571][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1095.393571][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.393571][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.393571][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.393571][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.393571][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.393571][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.393571][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.393571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.393571][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.393571][ T72] netlink_unicast+0x449/0x710 [ 1095.393571][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.393571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.393571][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.393571][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.393571][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.393571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.393571][ T72] [ 1095.395781][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1095.395781][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.395781][ T72] ipv6_find_idev+0x102/0x170 [ 1095.395781][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.395781][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.395781][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.395781][ T72] netlink_unicast+0x449/0x710 [ 1095.395781][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.395781][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.395781][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.395781][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.395781][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.395781][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.395781][ T72] [ 1095.397491][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1095.397491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.397491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.397491][ T72] ipv6_find_idev+0x102/0x170 [ 1095.397491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.397491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.397491][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.397491][ T72] netlink_unicast+0x449/0x710 [ 1095.397491][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.397491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.397491][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.397491][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.397491][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.397491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.397491][ T72] [ 1095.399350][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1095.399634][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1095.399634][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.399634][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.399634][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.399634][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.399634][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.399634][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.399634][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.399634][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.399634][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.399634][ T72] netlink_unicast+0x449/0x710 [ 1095.399634][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.399634][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.399634][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.399634][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.399634][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.399634][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.399634][ T72] [ 1095.401835][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1095.401835][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.401835][ T72] ipv6_find_idev+0x102/0x170 [ 1095.401835][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.401835][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.401835][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.401835][ T72] netlink_unicast+0x449/0x710 [ 1095.401835][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.401835][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.401835][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.401835][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.401835][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.401835][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.401835][ T72] [ 1095.403592][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1095.403592][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.403592][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.403592][ T72] ipv6_find_idev+0x102/0x170 [ 1095.403592][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.403592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.403592][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.403592][ T72] netlink_unicast+0x449/0x710 [ 1095.403592][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.403592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.403592][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.403592][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.403592][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.403592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.403592][ T72] [ 1095.405772][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1095.406059][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1095.406059][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.406059][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.406059][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.406059][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.406059][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.406059][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.406059][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.406059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.406059][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.406059][ T72] netlink_unicast+0x449/0x710 [ 1095.406059][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.406059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.406059][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.406059][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.406059][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.406059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.406059][ T72] [ 1095.408538][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1095.408538][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.408538][ T72] ipv6_find_idev+0x102/0x170 [ 1095.408538][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.408538][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.408538][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.408538][ T72] netlink_unicast+0x449/0x710 [ 1095.408538][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.408538][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.408538][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.408538][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.408538][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.408538][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.408538][ T72] [ 1095.410423][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1095.410423][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.410423][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.410423][ T72] ipv6_find_idev+0x102/0x170 [ 1095.410423][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.410423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.410423][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.410423][ T72] netlink_unicast+0x449/0x710 [ 1095.410423][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.410423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.410423][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.410423][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.410423][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.410423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.410423][ T72] [ 1095.412510][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1095.412853][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1095.412853][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.412853][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.412853][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.412853][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.412853][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.412853][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.412853][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.412853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.412853][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.412853][ T72] netlink_unicast+0x449/0x710 [ 1095.412853][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.412853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.412853][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.412853][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.412853][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.412853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.412853][ T72] [ 1095.415268][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1095.415268][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.415268][ T72] ipv6_find_idev+0x102/0x170 [ 1095.415268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.415268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.415268][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.415268][ T72] netlink_unicast+0x449/0x710 [ 1095.415268][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.415268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.415268][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.415268][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.415268][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.415268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.415268][ T72] [ 1095.417222][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1095.417222][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.417222][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.417222][ T72] ipv6_find_idev+0x102/0x170 [ 1095.417222][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.417222][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.417222][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.417222][ T72] netlink_unicast+0x449/0x710 [ 1095.417222][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.417222][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.417222][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.417222][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.417222][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.417222][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.417222][ T72] [ 1095.419827][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1095.420116][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1095.420116][ T72] netdev_get_by_index+0x5e/0x80 [ 1095.420116][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1095.420116][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1095.420116][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1095.420116][ T72] ipv6_add_addr+0x411/0x2000 [ 1095.420116][ T72] inet6_addr_add+0x30e/0xa40 [ 1095.420116][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1095.420116][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.420116][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.420116][ T72] netlink_unicast+0x449/0x710 [ 1095.420116][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.420116][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.420116][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.420116][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.420116][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.420116][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.420116][ T72] [ 1095.422565][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1095.422565][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1095.422565][ T72] ipv6_find_idev+0x102/0x170 [ 1095.422565][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.422565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.422565][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.422565][ T72] netlink_unicast+0x449/0x710 [ 1095.422565][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.422565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.422565][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.422565][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.422565][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.422565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.422565][ T72] [ 1095.424450][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1095.424450][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1095.424450][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1095.424450][ T72] ipv6_find_idev+0x102/0x170 [ 1095.424450][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1095.424450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1095.424450][ T72] netlink_rcv_skb+0x130/0x360 [ 1095.424450][ T72] netlink_unicast+0x449/0x710 [ 1095.424450][ T72] netlink_sendmsg+0x723/0xbe0 [ 1095.424450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1095.424450][ T72] ___sys_sendmsg+0xee/0x170 [ 1095.424450][ T72] __sys_sendmsg+0xcd/0x170 [ 1095.424450][ T72] do_syscall_64+0xc6/0x1e0 [ 1095.424450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1095.424450][ T72] [ 1105.662914][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1105.663384][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1105.663384][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.663384][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.663384][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.663384][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.663384][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.663384][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.663384][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.663384][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.663384][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.663384][ T72] netlink_unicast+0x449/0x710 [ 1105.663384][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.663384][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.663384][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.663384][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.663384][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.663384][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.663384][ T72] [ 1105.665597][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1105.665597][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.665597][ T72] ipv6_find_idev+0x102/0x170 [ 1105.665597][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.665597][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.665597][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.665597][ T72] netlink_unicast+0x449/0x710 [ 1105.665597][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.665597][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.665597][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.665597][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.665597][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.665597][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.665597][ T72] [ 1105.667315][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1105.667315][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.667315][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.667315][ T72] ipv6_find_idev+0x102/0x170 [ 1105.667315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.667315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.667315][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.667315][ T72] netlink_unicast+0x449/0x710 [ 1105.667315][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.667315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.667315][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.667315][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.667315][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.667315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.667315][ T72] [ 1105.669177][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1105.669467][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1105.669467][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.669467][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.669467][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.669467][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.669467][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.669467][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.669467][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.669467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.669467][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.669467][ T72] netlink_unicast+0x449/0x710 [ 1105.669467][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.669467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.669467][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.669467][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.669467][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.669467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.669467][ T72] [ 1105.671679][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1105.671679][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.671679][ T72] ipv6_find_idev+0x102/0x170 [ 1105.671679][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.671679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.671679][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.671679][ T72] netlink_unicast+0x449/0x710 [ 1105.671679][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.671679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.671679][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.671679][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.671679][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.671679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.671679][ T72] [ 1105.673386][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1105.673386][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.673386][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.673386][ T72] ipv6_find_idev+0x102/0x170 [ 1105.673386][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.673386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.673386][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.673386][ T72] netlink_unicast+0x449/0x710 [ 1105.673386][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.673386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.673386][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.673386][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.673386][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.673386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.673386][ T72] [ 1105.675254][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1105.675536][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1105.675536][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.675536][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.675536][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.675536][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.675536][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.675536][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.675536][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.675536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.675536][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.675536][ T72] netlink_unicast+0x449/0x710 [ 1105.675536][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.675536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.675536][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.675536][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.675536][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.675536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.675536][ T72] [ 1105.677737][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1105.677737][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.677737][ T72] ipv6_find_idev+0x102/0x170 [ 1105.677737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.677737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.677737][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.677737][ T72] netlink_unicast+0x449/0x710 [ 1105.677737][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.677737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.677737][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.677737][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.677737][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.677737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.677737][ T72] [ 1105.679431][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1105.679431][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.679431][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.679431][ T72] ipv6_find_idev+0x102/0x170 [ 1105.679431][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.679431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.679431][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.679431][ T72] netlink_unicast+0x449/0x710 [ 1105.679431][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.679431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.679431][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.679431][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.679431][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.679431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.679431][ T72] [ 1105.681294][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1105.681582][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1105.681582][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.681582][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.681582][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.681582][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.681582][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.681582][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.681582][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.681582][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.681582][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.681582][ T72] netlink_unicast+0x449/0x710 [ 1105.681582][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.681582][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.681582][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.681582][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.681582][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.681582][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.681582][ T72] [ 1105.683793][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1105.683793][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.683793][ T72] ipv6_find_idev+0x102/0x170 [ 1105.683793][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.683793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.683793][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.683793][ T72] netlink_unicast+0x449/0x710 [ 1105.683793][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.683793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.683793][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.683793][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.683793][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.683793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.683793][ T72] [ 1105.685488][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1105.685488][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.685488][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.685488][ T72] ipv6_find_idev+0x102/0x170 [ 1105.685488][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.685488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.685488][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.685488][ T72] netlink_unicast+0x449/0x710 [ 1105.685488][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.685488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.685488][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.685488][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.685488][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.685488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.685488][ T72] [ 1105.687761][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1105.688048][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1105.688048][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.688048][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.688048][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.688048][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.688048][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.688048][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.688048][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.688048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.688048][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.688048][ T72] netlink_unicast+0x449/0x710 [ 1105.688048][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.688048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.688048][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.688048][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.688048][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.688048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.688048][ T72] [ 1105.690242][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1105.690242][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.690242][ T72] ipv6_find_idev+0x102/0x170 [ 1105.690242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.690242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.690242][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.690242][ T72] netlink_unicast+0x449/0x710 [ 1105.690242][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.690242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.690242][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.690242][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.690242][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.690242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.690242][ T72] [ 1105.691935][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1105.691935][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.691935][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.691935][ T72] ipv6_find_idev+0x102/0x170 [ 1105.691935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.691935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.691935][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.691935][ T72] netlink_unicast+0x449/0x710 [ 1105.691935][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.691935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.691935][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.691935][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.691935][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.691935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.691935][ T72] [ 1105.693836][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1105.694131][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1105.694131][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.694131][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.694131][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.694131][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.694131][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.694131][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.694131][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.694131][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.694131][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.694131][ T72] netlink_unicast+0x449/0x710 [ 1105.694131][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.694131][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.694131][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.694131][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.694131][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.694131][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.694131][ T72] [ 1105.696466][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1105.696466][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.696466][ T72] ipv6_find_idev+0x102/0x170 [ 1105.696466][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.696466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.696466][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.696466][ T72] netlink_unicast+0x449/0x710 [ 1105.696466][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.696466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.696466][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.696466][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.696466][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.696466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.696466][ T72] [ 1105.698394][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1105.698394][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.698394][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.698394][ T72] ipv6_find_idev+0x102/0x170 [ 1105.698394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.698394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.698394][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.698394][ T72] netlink_unicast+0x449/0x710 [ 1105.698394][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.698394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.698394][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.698394][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.698394][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.698394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.698394][ T72] [ 1105.700479][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1105.700769][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1105.700769][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.700769][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.700769][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.700769][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.700769][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.700769][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.700769][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.700769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.700769][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.700769][ T72] netlink_unicast+0x449/0x710 [ 1105.700769][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.700769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.700769][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.700769][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.700769][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.700769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.700769][ T72] [ 1105.703220][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1105.703220][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.703220][ T72] ipv6_find_idev+0x102/0x170 [ 1105.703220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.703220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.703220][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.703220][ T72] netlink_unicast+0x449/0x710 [ 1105.703220][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.703220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.703220][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.703220][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.703220][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.703220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.703220][ T72] [ 1105.705099][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1105.705099][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.705099][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.705099][ T72] ipv6_find_idev+0x102/0x170 [ 1105.705099][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.705099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.705099][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.705099][ T72] netlink_unicast+0x449/0x710 [ 1105.705099][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.705099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.705099][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.705099][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.705099][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.705099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.705099][ T72] [ 1105.707193][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1105.707478][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1105.707478][ T72] netdev_get_by_index+0x5e/0x80 [ 1105.707478][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1105.707478][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1105.707478][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1105.707478][ T72] ipv6_add_addr+0x411/0x2000 [ 1105.707478][ T72] inet6_addr_add+0x30e/0xa40 [ 1105.707478][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1105.707478][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.707478][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.707478][ T72] netlink_unicast+0x449/0x710 [ 1105.707478][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.707478][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.707478][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.707478][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.707478][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.707478][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.707478][ T72] [ 1105.709975][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1105.709975][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1105.709975][ T72] ipv6_find_idev+0x102/0x170 [ 1105.709975][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.709975][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.709975][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.709975][ T72] netlink_unicast+0x449/0x710 [ 1105.709975][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.709975][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.709975][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.709975][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.709975][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.709975][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.709975][ T72] [ 1105.711845][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1105.711845][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1105.711845][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1105.711845][ T72] ipv6_find_idev+0x102/0x170 [ 1105.711845][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1105.711845][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1105.711845][ T72] netlink_rcv_skb+0x130/0x360 [ 1105.711845][ T72] netlink_unicast+0x449/0x710 [ 1105.711845][ T72] netlink_sendmsg+0x723/0xbe0 [ 1105.711845][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1105.711845][ T72] ___sys_sendmsg+0xee/0x170 [ 1105.711845][ T72] __sys_sendmsg+0xcd/0x170 [ 1105.711845][ T72] do_syscall_64+0xc6/0x1e0 [ 1105.711845][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1105.711845][ T72] [ 1107.238915][ T42] INFO: task modprobe:1060 blocked for more than 860 seconds. [ 1107.239342][ T42] Not tainted 6.8.0-virtme #1 [ 1107.239489][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1107.239695][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 1107.240015][ T42] Call Trace: [ 1107.240137][ T42] [ 1107.240211][ T42] __schedule+0x705/0x1ac0 [ 1107.240361][ T42] ? __pfx___schedule+0x10/0x10 [ 1107.240489][ T42] ? schedule+0x1a5/0x210 [ 1107.240589][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1107.240755][ T42] ? mark_lock+0x38/0x3e0 [ 1107.240869][ T42] ? do_raw_spin_lock+0x131/0x270 [ 1107.240998][ T42] ? schedule+0x1a5/0x210 [ 1107.241118][ T42] schedule+0xdf/0x210 [ 1107.241217][ T42] schedule_preempt_disabled+0x15/0x30 [ 1107.241356][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 1107.241490][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 1107.241660][ T42] ? kasan_save_stack+0x34/0x50 [ 1107.241802][ T42] ? kasan_save_stack+0x24/0x50 [ 1107.241946][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1107.242110][ T42] ? lock_acquire+0x1c1/0x220 [ 1107.242235][ T42] ? register_pernet_subsys+0x1a/0x50 [ 1107.242380][ T42] down_write+0x1c9/0x200 [ 1107.242482][ T42] ? __pfx_down_write+0x10/0x10 [ 1107.242610][ T42] ? __pfx___lock_release+0x10/0x10 [ 1107.242765][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 1107.243018][ T42] register_pernet_subsys+0x1a/0x50 [ 1107.243150][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 1107.243345][ T42] do_one_initcall+0xc8/0x3f0 [ 1107.243473][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 1107.243616][ T42] ? __create_object+0x5e/0xb0 [ 1107.243791][ T42] ? kasan_unpoison+0x27/0x60 [ 1107.243978][ T42] do_init_module+0x233/0x740 [ 1107.244116][ T42] load_module+0x16b5/0x2350 [ 1107.244257][ T42] ? __pfx_load_module+0x10/0x10 [ 1107.244385][ T42] ? kernel_read_file+0x3d2/0x520 [ 1107.244526][ T42] ? kernel_read_file+0x300/0x520 [ 1107.244666][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 1107.244821][ T42] ? init_module_from_file+0xd2/0x130 [ 1107.244961][ T42] init_module_from_file+0xd2/0x130 [ 1107.245089][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 1107.245244][ T42] ? __lock_release+0x103/0x460 [ 1107.245372][ T42] ? idempotent_init_module+0x32a/0x620 [ 1107.245515][ T42] ? idempotent_init_module+0x32a/0x620 [ 1107.245646][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 1107.245804][ T42] idempotent_init_module+0x342/0x620 [ 1107.245943][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 1107.246117][ T42] __x64_sys_finit_module+0xbe/0x130 [ 1107.246247][ T42] do_syscall_64+0xc6/0x1e0 [ 1107.246377][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1107.246540][ T42] RIP: 0033:0x7f69f7397e5d [ 1107.246670][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 1107.246890][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 1107.247075][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 1107.247263][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 1107.247451][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 1107.247636][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 1107.247871][ T42] [ 1107.247971][ T42] [ 1107.247971][ T42] Showing all locks held in the system: [ 1107.248153][ T42] 1 lock held by khungtaskd/42: [ 1107.248277][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 1107.248510][ T42] 2 locks held by kworker/u20:1/60: [ 1107.248630][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1107.248939][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1107.249223][ T42] 3 locks held by kworker/u16:1/72: [ 1107.249343][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1107.249595][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1107.249836][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 1107.250061][ T42] 1 lock held by modprobe/1060: [ 1107.250183][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 1107.250433][ T42] [ 1107.250500][ T42] ============================================= [ 1107.250500][ T42] [ 1115.758922][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1115.759334][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1115.759334][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.759334][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.759334][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.759334][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.759334][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.759334][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.759334][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.759334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.759334][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.759334][ T72] netlink_unicast+0x449/0x710 [ 1115.759334][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.759334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.759334][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.759334][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.759334][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.759334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.759334][ T72] [ 1115.761397][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1115.761397][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.761397][ T72] ipv6_find_idev+0x102/0x170 [ 1115.761397][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.761397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.761397][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.761397][ T72] netlink_unicast+0x449/0x710 [ 1115.761397][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.761397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.761397][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.761397][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.761397][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.761397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.761397][ T72] [ 1115.762976][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1115.762976][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.762976][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.762976][ T72] ipv6_find_idev+0x102/0x170 [ 1115.762976][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.762976][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.762976][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.762976][ T72] netlink_unicast+0x449/0x710 [ 1115.762976][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.762976][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.762976][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.762976][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.762976][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.762976][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.762976][ T72] [ 1115.764654][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1115.764928][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1115.764928][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.764928][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.764928][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.764928][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.764928][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.764928][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.764928][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.764928][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.764928][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.764928][ T72] netlink_unicast+0x449/0x710 [ 1115.764928][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.764928][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.764928][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.764928][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.764928][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.764928][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.764928][ T72] [ 1115.766923][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1115.766923][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.766923][ T72] ipv6_find_idev+0x102/0x170 [ 1115.766923][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.766923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.766923][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.766923][ T72] netlink_unicast+0x449/0x710 [ 1115.766923][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.766923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.766923][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.766923][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.766923][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.766923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.766923][ T72] [ 1115.768437][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1115.768437][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.768437][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.768437][ T72] ipv6_find_idev+0x102/0x170 [ 1115.768437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.768437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.768437][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.768437][ T72] netlink_unicast+0x449/0x710 [ 1115.768437][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.768437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.768437][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.768437][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.768437][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.768437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.768437][ T72] [ 1115.770096][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1115.770361][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1115.770361][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.770361][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.770361][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.770361][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.770361][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.770361][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.770361][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.770361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.770361][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.770361][ T72] netlink_unicast+0x449/0x710 [ 1115.770361][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.770361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.770361][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.770361][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.770361][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.770361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.770361][ T72] [ 1115.772336][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1115.772336][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.772336][ T72] ipv6_find_idev+0x102/0x170 [ 1115.772336][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.772336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.772336][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.772336][ T72] netlink_unicast+0x449/0x710 [ 1115.772336][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.772336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.772336][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.772336][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.772336][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.772336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.772336][ T72] [ 1115.773865][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1115.773865][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.773865][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.773865][ T72] ipv6_find_idev+0x102/0x170 [ 1115.773865][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.773865][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.773865][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.773865][ T72] netlink_unicast+0x449/0x710 [ 1115.773865][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.773865][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.773865][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.773865][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.773865][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.773865][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.773865][ T72] [ 1115.775535][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1115.776237][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1115.776237][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.776237][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.776237][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.776237][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.776237][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.776237][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.776237][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.776237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.776237][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.776237][ T72] netlink_unicast+0x449/0x710 [ 1115.776237][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.776237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.776237][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.776237][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.776237][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.776237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.776237][ T72] [ 1115.778199][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1115.778199][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.778199][ T72] ipv6_find_idev+0x102/0x170 [ 1115.778199][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.778199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.778199][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.778199][ T72] netlink_unicast+0x449/0x710 [ 1115.778199][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.778199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.778199][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.778199][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.778199][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.778199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.778199][ T72] [ 1115.779715][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1115.779715][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.779715][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.779715][ T72] ipv6_find_idev+0x102/0x170 [ 1115.779715][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.779715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.779715][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.779715][ T72] netlink_unicast+0x449/0x710 [ 1115.779715][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.779715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.779715][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.779715][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.779715][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.779715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.779715][ T72] [ 1115.781762][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1115.782190][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1115.782190][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.782190][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.782190][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.782190][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.782190][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.782190][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.782190][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.782190][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.782190][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.782190][ T72] netlink_unicast+0x449/0x710 [ 1115.782190][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.782190][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.782190][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.782190][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.782190][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.782190][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.782190][ T72] [ 1115.785142][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1115.785142][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.785142][ T72] ipv6_find_idev+0x102/0x170 [ 1115.785142][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.785142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.785142][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.785142][ T72] netlink_unicast+0x449/0x710 [ 1115.785142][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.785142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.785142][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.785142][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.785142][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.785142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.785142][ T72] [ 1115.787508][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1115.787508][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.787508][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.787508][ T72] ipv6_find_idev+0x102/0x170 [ 1115.787508][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.787508][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.787508][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.787508][ T72] netlink_unicast+0x449/0x710 [ 1115.787508][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.787508][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.787508][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.787508][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.787508][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.787508][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.787508][ T72] [ 1115.790194][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1115.790606][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1115.790606][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.790606][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.790606][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.790606][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.790606][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.790606][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.790606][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.790606][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.790606][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.790606][ T72] netlink_unicast+0x449/0x710 [ 1115.790606][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.790606][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.790606][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.790606][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.790606][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.790606][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.790606][ T72] [ 1115.793884][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1115.793884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.793884][ T72] ipv6_find_idev+0x102/0x170 [ 1115.793884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.793884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.793884][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.793884][ T72] netlink_unicast+0x449/0x710 [ 1115.793884][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.793884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.793884][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.793884][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.793884][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.793884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.793884][ T72] [ 1115.796698][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1115.796698][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.796698][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.796698][ T72] ipv6_find_idev+0x102/0x170 [ 1115.796698][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.796698][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.796698][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.796698][ T72] netlink_unicast+0x449/0x710 [ 1115.796698][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.796698][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.796698][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.796698][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.796698][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.796698][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.796698][ T72] [ 1115.799669][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1115.800153][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1115.800153][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.800153][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.800153][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.800153][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.800153][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.800153][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.800153][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.800153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.800153][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.800153][ T72] netlink_unicast+0x449/0x710 [ 1115.800153][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.800153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.800153][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.800153][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.800153][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.800153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.800153][ T72] [ 1115.803429][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1115.803429][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.803429][ T72] ipv6_find_idev+0x102/0x170 [ 1115.803429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.803429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.803429][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.803429][ T72] netlink_unicast+0x449/0x710 [ 1115.803429][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.803429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.803429][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.803429][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.803429][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.803429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.803429][ T72] [ 1115.806138][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1115.806138][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.806138][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.806138][ T72] ipv6_find_idev+0x102/0x170 [ 1115.806138][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.806138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.806138][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.806138][ T72] netlink_unicast+0x449/0x710 [ 1115.806138][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.806138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.806138][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.806138][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.806138][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.806138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.806138][ T72] [ 1115.809151][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1115.809570][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1115.809570][ T72] netdev_get_by_index+0x5e/0x80 [ 1115.809570][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1115.809570][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1115.809570][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1115.809570][ T72] ipv6_add_addr+0x411/0x2000 [ 1115.809570][ T72] inet6_addr_add+0x30e/0xa40 [ 1115.809570][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1115.809570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.809570][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.809570][ T72] netlink_unicast+0x449/0x710 [ 1115.809570][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.809570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.809570][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.809570][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.809570][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.809570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.809570][ T72] [ 1115.813215][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1115.813215][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1115.813215][ T72] ipv6_find_idev+0x102/0x170 [ 1115.813215][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.813215][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.813215][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.813215][ T72] netlink_unicast+0x449/0x710 [ 1115.813215][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.813215][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.813215][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.813215][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.813215][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.813215][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.813215][ T72] [ 1115.815918][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1115.815918][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1115.815918][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1115.815918][ T72] ipv6_find_idev+0x102/0x170 [ 1115.815918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1115.815918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1115.815918][ T72] netlink_rcv_skb+0x130/0x360 [ 1115.815918][ T72] netlink_unicast+0x449/0x710 [ 1115.815918][ T72] netlink_sendmsg+0x723/0xbe0 [ 1115.815918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1115.815918][ T72] ___sys_sendmsg+0xee/0x170 [ 1115.815918][ T72] __sys_sendmsg+0xcd/0x170 [ 1115.815918][ T72] do_syscall_64+0xc6/0x1e0 [ 1115.815918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1115.815918][ T72] [ 1125.870805][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1125.871209][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1125.871209][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.871209][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.871209][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.871209][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.871209][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.871209][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.871209][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.871209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.871209][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.871209][ T72] netlink_unicast+0x449/0x710 [ 1125.871209][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.871209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.871209][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.871209][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.871209][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.871209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.871209][ T72] [ 1125.873207][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1125.873207][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.873207][ T72] ipv6_find_idev+0x102/0x170 [ 1125.873207][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.873207][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.873207][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.873207][ T72] netlink_unicast+0x449/0x710 [ 1125.873207][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.873207][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.873207][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.873207][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.873207][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.873207][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.873207][ T72] [ 1125.874721][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1125.874721][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.874721][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.874721][ T72] ipv6_find_idev+0x102/0x170 [ 1125.874721][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.874721][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.874721][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.874721][ T72] netlink_unicast+0x449/0x710 [ 1125.874721][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.874721][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.874721][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.874721][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.874721][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.874721][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.874721][ T72] [ 1125.876398][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1125.876658][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1125.876658][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.876658][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.876658][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.876658][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.876658][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.876658][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.876658][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.876658][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.876658][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.876658][ T72] netlink_unicast+0x449/0x710 [ 1125.876658][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.876658][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.876658][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.876658][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.876658][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.876658][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.876658][ T72] [ 1125.878640][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1125.878640][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.878640][ T72] ipv6_find_idev+0x102/0x170 [ 1125.878640][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.878640][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.878640][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.878640][ T72] netlink_unicast+0x449/0x710 [ 1125.878640][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.878640][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.878640][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.878640][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.878640][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.878640][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.878640][ T72] [ 1125.880157][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1125.880157][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.880157][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.880157][ T72] ipv6_find_idev+0x102/0x170 [ 1125.880157][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.880157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.880157][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.880157][ T72] netlink_unicast+0x449/0x710 [ 1125.880157][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.880157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.880157][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.880157][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.880157][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.880157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.880157][ T72] [ 1125.881825][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1125.882087][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1125.882087][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.882087][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.882087][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.882087][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.882087][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.882087][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.882087][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.882087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.882087][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.882087][ T72] netlink_unicast+0x449/0x710 [ 1125.882087][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.882087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.882087][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.882087][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.882087][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.882087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.882087][ T72] [ 1125.884055][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1125.884055][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.884055][ T72] ipv6_find_idev+0x102/0x170 [ 1125.884055][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.884055][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.884055][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.884055][ T72] netlink_unicast+0x449/0x710 [ 1125.884055][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.884055][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.884055][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.884055][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.884055][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.884055][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.884055][ T72] [ 1125.885564][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1125.885564][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.885564][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.885564][ T72] ipv6_find_idev+0x102/0x170 [ 1125.885564][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.885564][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.885564][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.885564][ T72] netlink_unicast+0x449/0x710 [ 1125.885564][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.885564][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.885564][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.885564][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.885564][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.885564][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.885564][ T72] [ 1125.887276][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1125.887541][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1125.887541][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.887541][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.887541][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.887541][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.887541][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.887541][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.887541][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.887541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.887541][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.887541][ T72] netlink_unicast+0x449/0x710 [ 1125.887541][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.887541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.887541][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.887541][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.887541][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.887541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.887541][ T72] [ 1125.889505][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1125.889505][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.889505][ T72] ipv6_find_idev+0x102/0x170 [ 1125.889505][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.889505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.889505][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.889505][ T72] netlink_unicast+0x449/0x710 [ 1125.889505][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.889505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.889505][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.889505][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.889505][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.889505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.889505][ T72] [ 1125.891019][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1125.891019][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.891019][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.891019][ T72] ipv6_find_idev+0x102/0x170 [ 1125.891019][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.891019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.891019][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.891019][ T72] netlink_unicast+0x449/0x710 [ 1125.891019][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.891019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.891019][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.891019][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.891019][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.891019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.891019][ T72] [ 1125.893088][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1125.893352][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1125.893352][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.893352][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.893352][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.893352][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.893352][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.893352][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.893352][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.893352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.893352][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.893352][ T72] netlink_unicast+0x449/0x710 [ 1125.893352][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.893352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.893352][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.893352][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.893352][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.893352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.893352][ T72] [ 1125.895400][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1125.895400][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.895400][ T72] ipv6_find_idev+0x102/0x170 [ 1125.895400][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.895400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.895400][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.895400][ T72] netlink_unicast+0x449/0x710 [ 1125.895400][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.895400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.895400][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.895400][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.895400][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.895400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.895400][ T72] [ 1125.896927][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1125.896927][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.896927][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.896927][ T72] ipv6_find_idev+0x102/0x170 [ 1125.896927][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.896927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.896927][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.896927][ T72] netlink_unicast+0x449/0x710 [ 1125.896927][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.896927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.896927][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.896927][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.896927][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.896927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.896927][ T72] [ 1125.898635][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1125.898952][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1125.898952][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.898952][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.898952][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.898952][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.898952][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.898952][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.898952][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.898952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.898952][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.898952][ T72] netlink_unicast+0x449/0x710 [ 1125.898952][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.898952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.898952][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.898952][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.898952][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.898952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.898952][ T72] [ 1125.901031][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1125.901031][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.901031][ T72] ipv6_find_idev+0x102/0x170 [ 1125.901031][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.901031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.901031][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.901031][ T72] netlink_unicast+0x449/0x710 [ 1125.901031][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.901031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.901031][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.901031][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.901031][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.901031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.901031][ T72] [ 1125.902717][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1125.902717][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.902717][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.902717][ T72] ipv6_find_idev+0x102/0x170 [ 1125.902717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.902717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.902717][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.902717][ T72] netlink_unicast+0x449/0x710 [ 1125.902717][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.902717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.902717][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.902717][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.902717][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.902717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.902717][ T72] [ 1125.904648][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1125.904971][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1125.904971][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.904971][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.904971][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.904971][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.904971][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.904971][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.904971][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.904971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.904971][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.904971][ T72] netlink_unicast+0x449/0x710 [ 1125.904971][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.904971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.904971][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.904971][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.904971][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.904971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.904971][ T72] [ 1125.907464][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1125.907464][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.907464][ T72] ipv6_find_idev+0x102/0x170 [ 1125.907464][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.907464][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.907464][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.907464][ T72] netlink_unicast+0x449/0x710 [ 1125.907464][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.907464][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.907464][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.907464][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.907464][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.907464][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.907464][ T72] [ 1125.909187][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1125.909187][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.909187][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.909187][ T72] ipv6_find_idev+0x102/0x170 [ 1125.909187][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.909187][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.909187][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.909187][ T72] netlink_unicast+0x449/0x710 [ 1125.909187][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.909187][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.909187][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.909187][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.909187][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.909187][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.909187][ T72] [ 1125.911779][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1125.912207][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1125.912207][ T72] netdev_get_by_index+0x5e/0x80 [ 1125.912207][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1125.912207][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1125.912207][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1125.912207][ T72] ipv6_add_addr+0x411/0x2000 [ 1125.912207][ T72] inet6_addr_add+0x30e/0xa40 [ 1125.912207][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1125.912207][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.912207][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.912207][ T72] netlink_unicast+0x449/0x710 [ 1125.912207][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.912207][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.912207][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.912207][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.912207][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.912207][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.912207][ T72] [ 1125.915737][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1125.915737][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1125.915737][ T72] ipv6_find_idev+0x102/0x170 [ 1125.915737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.915737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.915737][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.915737][ T72] netlink_unicast+0x449/0x710 [ 1125.915737][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.915737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.915737][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.915737][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.915737][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.915737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.915737][ T72] [ 1125.917958][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1125.917958][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1125.917958][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1125.917958][ T72] ipv6_find_idev+0x102/0x170 [ 1125.917958][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1125.917958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1125.917958][ T72] netlink_rcv_skb+0x130/0x360 [ 1125.917958][ T72] netlink_unicast+0x449/0x710 [ 1125.917958][ T72] netlink_sendmsg+0x723/0xbe0 [ 1125.917958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1125.917958][ T72] ___sys_sendmsg+0xee/0x170 [ 1125.917958][ T72] __sys_sendmsg+0xcd/0x170 [ 1125.917958][ T72] do_syscall_64+0xc6/0x1e0 [ 1125.917958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1125.917958][ T72] [ 1136.150951][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1136.151380][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1136.151380][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.151380][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.151380][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.151380][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.151380][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.151380][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.151380][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.151380][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.151380][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.151380][ T72] netlink_unicast+0x449/0x710 [ 1136.151380][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.151380][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.151380][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.151380][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.151380][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.151380][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.151380][ T72] [ 1136.153389][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1136.153389][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.153389][ T72] ipv6_find_idev+0x102/0x170 [ 1136.153389][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.153389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.153389][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.153389][ T72] netlink_unicast+0x449/0x710 [ 1136.153389][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.153389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.153389][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.153389][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.153389][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.153389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.153389][ T72] [ 1136.154896][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1136.154896][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.154896][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.154896][ T72] ipv6_find_idev+0x102/0x170 [ 1136.154896][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.154896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.154896][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.154896][ T72] netlink_unicast+0x449/0x710 [ 1136.154896][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.154896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.154896][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.154896][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.154896][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.154896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.154896][ T72] [ 1136.156577][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1136.156865][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1136.156865][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.156865][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.156865][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.156865][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.156865][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.156865][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.156865][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.156865][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.156865][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.156865][ T72] netlink_unicast+0x449/0x710 [ 1136.156865][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.156865][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.156865][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.156865][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.156865][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.156865][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.156865][ T72] [ 1136.158844][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1136.158844][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.158844][ T72] ipv6_find_idev+0x102/0x170 [ 1136.158844][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.158844][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.158844][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.158844][ T72] netlink_unicast+0x449/0x710 [ 1136.158844][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.158844][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.158844][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.158844][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.158844][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.158844][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.158844][ T72] [ 1136.160359][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1136.160359][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.160359][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.160359][ T72] ipv6_find_idev+0x102/0x170 [ 1136.160359][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.160359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.160359][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.160359][ T72] netlink_unicast+0x449/0x710 [ 1136.160359][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.160359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.160359][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.160359][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.160359][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.160359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.160359][ T72] [ 1136.162023][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1136.162286][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1136.162286][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.162286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.162286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.162286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.162286][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.162286][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.162286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.162286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.162286][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.162286][ T72] netlink_unicast+0x449/0x710 [ 1136.162286][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.162286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.162286][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.162286][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.162286][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.162286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.162286][ T72] [ 1136.164249][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1136.164249][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.164249][ T72] ipv6_find_idev+0x102/0x170 [ 1136.164249][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.164249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.164249][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.164249][ T72] netlink_unicast+0x449/0x710 [ 1136.164249][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.164249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.164249][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.164249][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.164249][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.164249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.164249][ T72] [ 1136.165776][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1136.165776][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.165776][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.165776][ T72] ipv6_find_idev+0x102/0x170 [ 1136.165776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.165776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.165776][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.165776][ T72] netlink_unicast+0x449/0x710 [ 1136.165776][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.165776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.165776][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.165776][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.165776][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.165776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.165776][ T72] [ 1136.167431][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1136.167696][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1136.167696][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.167696][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.167696][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.167696][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.167696][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.167696][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.167696][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.167696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.167696][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.167696][ T72] netlink_unicast+0x449/0x710 [ 1136.167696][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.167696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.167696][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.167696][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.167696][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.167696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.167696][ T72] [ 1136.169662][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1136.169662][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.169662][ T72] ipv6_find_idev+0x102/0x170 [ 1136.169662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.169662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.169662][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.169662][ T72] netlink_unicast+0x449/0x710 [ 1136.169662][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.169662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.169662][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.169662][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.169662][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.169662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.169662][ T72] [ 1136.171172][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1136.171172][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.171172][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.171172][ T72] ipv6_find_idev+0x102/0x170 [ 1136.171172][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.171172][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.171172][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.171172][ T72] netlink_unicast+0x449/0x710 [ 1136.171172][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.171172][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.171172][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.171172][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.171172][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.171172][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.171172][ T72] [ 1136.172874][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1136.173142][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1136.173142][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.173142][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.173142][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.173142][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.173142][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.173142][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.173142][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.173142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.173142][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.173142][ T72] netlink_unicast+0x449/0x710 [ 1136.173142][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.173142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.173142][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.173142][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.173142][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.173142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.173142][ T72] [ 1136.175107][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1136.175107][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.175107][ T72] ipv6_find_idev+0x102/0x170 [ 1136.175107][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.175107][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.175107][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.175107][ T72] netlink_unicast+0x449/0x710 [ 1136.175107][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.175107][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.175107][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.175107][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.175107][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.175107][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.175107][ T72] [ 1136.176687][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1136.176687][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.176687][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.176687][ T72] ipv6_find_idev+0x102/0x170 [ 1136.176687][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.176687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.176687][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.176687][ T72] netlink_unicast+0x449/0x710 [ 1136.176687][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.176687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.176687][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.176687][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.176687][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.176687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.176687][ T72] [ 1136.178557][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1136.178877][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1136.178877][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.178877][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.178877][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.178877][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.178877][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.178877][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.178877][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.178877][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.178877][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.178877][ T72] netlink_unicast+0x449/0x710 [ 1136.178877][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.178877][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.178877][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.178877][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.178877][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.178877][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.178877][ T72] [ 1136.181014][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1136.181014][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.181014][ T72] ipv6_find_idev+0x102/0x170 [ 1136.181014][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.181014][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.181014][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.181014][ T72] netlink_unicast+0x449/0x710 [ 1136.181014][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.181014][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.181014][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.181014][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.181014][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.181014][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.181014][ T72] [ 1136.182758][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1136.182758][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.182758][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.182758][ T72] ipv6_find_idev+0x102/0x170 [ 1136.182758][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.182758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.182758][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.182758][ T72] netlink_unicast+0x449/0x710 [ 1136.182758][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.182758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.182758][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.182758][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.182758][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.182758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.182758][ T72] [ 1136.184637][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1136.184951][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1136.184951][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.184951][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.184951][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.184951][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.184951][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.184951][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.184951][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.184951][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.184951][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.184951][ T72] netlink_unicast+0x449/0x710 [ 1136.184951][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.184951][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.184951][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.184951][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.184951][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.184951][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.184951][ T72] [ 1136.187094][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1136.187094][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.187094][ T72] ipv6_find_idev+0x102/0x170 [ 1136.187094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.187094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.187094][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.187094][ T72] netlink_unicast+0x449/0x710 [ 1136.187094][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.187094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.187094][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.187094][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.187094][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.187094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.187094][ T72] [ 1136.188782][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1136.188782][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.188782][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.188782][ T72] ipv6_find_idev+0x102/0x170 [ 1136.188782][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.188782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.188782][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.188782][ T72] netlink_unicast+0x449/0x710 [ 1136.188782][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.188782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.188782][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.188782][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.188782][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.188782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.188782][ T72] [ 1136.190778][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1136.191043][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1136.191043][ T72] netdev_get_by_index+0x5e/0x80 [ 1136.191043][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1136.191043][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1136.191043][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1136.191043][ T72] ipv6_add_addr+0x411/0x2000 [ 1136.191043][ T72] inet6_addr_add+0x30e/0xa40 [ 1136.191043][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1136.191043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.191043][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.191043][ T72] netlink_unicast+0x449/0x710 [ 1136.191043][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.191043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.191043][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.191043][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.191043][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.191043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.191043][ T72] [ 1136.193758][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1136.193758][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1136.193758][ T72] ipv6_find_idev+0x102/0x170 [ 1136.193758][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.193758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.193758][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.193758][ T72] netlink_unicast+0x449/0x710 [ 1136.193758][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.193758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.193758][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.193758][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.193758][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.193758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.193758][ T72] [ 1136.195450][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1136.195450][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1136.195450][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1136.195450][ T72] ipv6_find_idev+0x102/0x170 [ 1136.195450][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1136.195450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1136.195450][ T72] netlink_rcv_skb+0x130/0x360 [ 1136.195450][ T72] netlink_unicast+0x449/0x710 [ 1136.195450][ T72] netlink_sendmsg+0x723/0xbe0 [ 1136.195450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1136.195450][ T72] ___sys_sendmsg+0xee/0x170 [ 1136.195450][ T72] __sys_sendmsg+0xcd/0x170 [ 1136.195450][ T72] do_syscall_64+0xc6/0x1e0 [ 1136.195450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1136.195450][ T72] [ 1146.438901][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1146.439405][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1146.439405][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.439405][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.439405][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.439405][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.439405][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.439405][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.439405][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.439405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.439405][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.439405][ T72] netlink_unicast+0x449/0x710 [ 1146.439405][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.439405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.439405][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.439405][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.439405][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.439405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.439405][ T72] [ 1146.441639][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1146.441639][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.441639][ T72] ipv6_find_idev+0x102/0x170 [ 1146.441639][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.441639][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.441639][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.441639][ T72] netlink_unicast+0x449/0x710 [ 1146.441639][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.441639][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.441639][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.441639][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.441639][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.441639][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.441639][ T72] [ 1146.443337][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1146.443337][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.443337][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.443337][ T72] ipv6_find_idev+0x102/0x170 [ 1146.443337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.443337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.443337][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.443337][ T72] netlink_unicast+0x449/0x710 [ 1146.443337][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.443337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.443337][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.443337][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.443337][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.443337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.443337][ T72] [ 1146.445210][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1146.445502][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1146.445502][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.445502][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.445502][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.445502][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.445502][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.445502][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.445502][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.445502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.445502][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.445502][ T72] netlink_unicast+0x449/0x710 [ 1146.445502][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.445502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.445502][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.445502][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.445502][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.445502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.445502][ T72] [ 1146.447712][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1146.447712][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.447712][ T72] ipv6_find_idev+0x102/0x170 [ 1146.447712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.447712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.447712][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.447712][ T72] netlink_unicast+0x449/0x710 [ 1146.447712][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.447712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.447712][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.447712][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.447712][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.447712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.447712][ T72] [ 1146.449416][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1146.449416][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.449416][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.449416][ T72] ipv6_find_idev+0x102/0x170 [ 1146.449416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.449416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.449416][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.449416][ T72] netlink_unicast+0x449/0x710 [ 1146.449416][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.449416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.449416][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.449416][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.449416][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.449416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.449416][ T72] [ 1146.451268][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1146.451553][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1146.451553][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.451553][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.451553][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.451553][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.451553][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.451553][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.451553][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.451553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.451553][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.451553][ T72] netlink_unicast+0x449/0x710 [ 1146.451553][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.451553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.451553][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.451553][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.451553][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.451553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.451553][ T72] [ 1146.454151][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1146.454151][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.454151][ T72] ipv6_find_idev+0x102/0x170 [ 1146.454151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.454151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.454151][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.454151][ T72] netlink_unicast+0x449/0x710 [ 1146.454151][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.454151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.454151][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.454151][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.454151][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.454151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.454151][ T72] [ 1146.455857][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1146.455857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.455857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.455857][ T72] ipv6_find_idev+0x102/0x170 [ 1146.455857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.455857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.455857][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.455857][ T72] netlink_unicast+0x449/0x710 [ 1146.455857][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.455857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.455857][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.455857][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.455857][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.455857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.455857][ T72] [ 1146.457757][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1146.458050][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1146.458050][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.458050][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.458050][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.458050][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.458050][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.458050][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.458050][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.458050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.458050][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.458050][ T72] netlink_unicast+0x449/0x710 [ 1146.458050][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.458050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.458050][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.458050][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.458050][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.458050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.458050][ T72] [ 1146.460267][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1146.460267][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.460267][ T72] ipv6_find_idev+0x102/0x170 [ 1146.460267][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.460267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.460267][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.460267][ T72] netlink_unicast+0x449/0x710 [ 1146.460267][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.460267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.460267][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.460267][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.460267][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.460267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.460267][ T72] [ 1146.462054][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1146.462054][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.462054][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.462054][ T72] ipv6_find_idev+0x102/0x170 [ 1146.462054][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.462054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.462054][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.462054][ T72] netlink_unicast+0x449/0x710 [ 1146.462054][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.462054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.462054][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.462054][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.462054][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.462054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.462054][ T72] [ 1146.463923][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1146.464208][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1146.464208][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.464208][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.464208][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.464208][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.464208][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.464208][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.464208][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.464208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.464208][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.464208][ T72] netlink_unicast+0x449/0x710 [ 1146.464208][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.464208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.464208][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.464208][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.464208][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.464208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.464208][ T72] [ 1146.466430][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1146.466430][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.466430][ T72] ipv6_find_idev+0x102/0x170 [ 1146.466430][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.466430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.466430][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.466430][ T72] netlink_unicast+0x449/0x710 [ 1146.466430][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.466430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.466430][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.466430][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.466430][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.466430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.466430][ T72] [ 1146.468210][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1146.468210][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.468210][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.468210][ T72] ipv6_find_idev+0x102/0x170 [ 1146.468210][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.468210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.468210][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.468210][ T72] netlink_unicast+0x449/0x710 [ 1146.468210][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.468210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.468210][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.468210][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.468210][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.468210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.468210][ T72] [ 1146.470304][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1146.470591][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1146.470591][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.470591][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.470591][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.470591][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.470591][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.470591][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.470591][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.470591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.470591][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.470591][ T72] netlink_unicast+0x449/0x710 [ 1146.470591][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.470591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.470591][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.470591][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.470591][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.470591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.470591][ T72] [ 1146.473087][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1146.473087][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.473087][ T72] ipv6_find_idev+0x102/0x170 [ 1146.473087][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.473087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.473087][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.473087][ T72] netlink_unicast+0x449/0x710 [ 1146.473087][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.473087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.473087][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.473087][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.473087][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.473087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.473087][ T72] [ 1146.474955][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1146.474955][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.474955][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.474955][ T72] ipv6_find_idev+0x102/0x170 [ 1146.474955][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.474955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.474955][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.474955][ T72] netlink_unicast+0x449/0x710 [ 1146.474955][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.474955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.474955][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.474955][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.474955][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.474955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.474955][ T72] [ 1146.477036][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1146.477323][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1146.477323][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.477323][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.477323][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.477323][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.477323][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.477323][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.477323][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.477323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.477323][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.477323][ T72] netlink_unicast+0x449/0x710 [ 1146.477323][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.477323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.477323][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.477323][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.477323][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.477323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.477323][ T72] [ 1146.479762][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1146.479762][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.479762][ T72] ipv6_find_idev+0x102/0x170 [ 1146.479762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.479762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.479762][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.479762][ T72] netlink_unicast+0x449/0x710 [ 1146.479762][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.479762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.479762][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.479762][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.479762][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.479762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.479762][ T72] [ 1146.481648][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1146.481648][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.481648][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.481648][ T72] ipv6_find_idev+0x102/0x170 [ 1146.481648][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.481648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.481648][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.481648][ T72] netlink_unicast+0x449/0x710 [ 1146.481648][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.481648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.481648][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.481648][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.481648][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.481648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.481648][ T72] [ 1146.483802][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1146.484088][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1146.484088][ T72] netdev_get_by_index+0x5e/0x80 [ 1146.484088][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1146.484088][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1146.484088][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1146.484088][ T72] ipv6_add_addr+0x411/0x2000 [ 1146.484088][ T72] inet6_addr_add+0x30e/0xa40 [ 1146.484088][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1146.484088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.484088][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.484088][ T72] netlink_unicast+0x449/0x710 [ 1146.484088][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.484088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.484088][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.484088][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.484088][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.484088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.484088][ T72] [ 1146.486591][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1146.486591][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1146.486591][ T72] ipv6_find_idev+0x102/0x170 [ 1146.486591][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.486591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.486591][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.486591][ T72] netlink_unicast+0x449/0x710 [ 1146.486591][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.486591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.486591][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.486591][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.486591][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.486591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.486591][ T72] [ 1146.488403][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1146.488403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1146.488403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1146.488403][ T72] ipv6_find_idev+0x102/0x170 [ 1146.488403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1146.488403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1146.488403][ T72] netlink_rcv_skb+0x130/0x360 [ 1146.488403][ T72] netlink_unicast+0x449/0x710 [ 1146.488403][ T72] netlink_sendmsg+0x723/0xbe0 [ 1146.488403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1146.488403][ T72] ___sys_sendmsg+0xee/0x170 [ 1146.488403][ T72] __sys_sendmsg+0xcd/0x170 [ 1146.488403][ T72] do_syscall_64+0xc6/0x1e0 [ 1146.488403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1146.488403][ T72] [ 1156.726923][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1156.727400][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1156.727400][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.727400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.727400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.727400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.727400][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.727400][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.727400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.727400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.727400][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.727400][ T72] netlink_unicast+0x449/0x710 [ 1156.727400][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.727400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.727400][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.727400][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.727400][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.727400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.727400][ T72] [ 1156.729615][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1156.729615][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.729615][ T72] ipv6_find_idev+0x102/0x170 [ 1156.729615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.729615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.729615][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.729615][ T72] netlink_unicast+0x449/0x710 [ 1156.729615][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.729615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.729615][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.729615][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.729615][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.729615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.729615][ T72] [ 1156.731316][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1156.731316][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.731316][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.731316][ T72] ipv6_find_idev+0x102/0x170 [ 1156.731316][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.731316][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.731316][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.731316][ T72] netlink_unicast+0x449/0x710 [ 1156.731316][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.731316][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.731316][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.731316][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.731316][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.731316][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.731316][ T72] [ 1156.733190][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1156.733481][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1156.733481][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.733481][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.733481][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.733481][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.733481][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.733481][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.733481][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.733481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.733481][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.733481][ T72] netlink_unicast+0x449/0x710 [ 1156.733481][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.733481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.733481][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.733481][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.733481][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.733481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.733481][ T72] [ 1156.735725][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1156.735725][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.735725][ T72] ipv6_find_idev+0x102/0x170 [ 1156.735725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.735725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.735725][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.735725][ T72] netlink_unicast+0x449/0x710 [ 1156.735725][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.735725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.735725][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.735725][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.735725][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.735725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.735725][ T72] [ 1156.737420][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1156.737420][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.737420][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.737420][ T72] ipv6_find_idev+0x102/0x170 [ 1156.737420][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.737420][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.737420][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.737420][ T72] netlink_unicast+0x449/0x710 [ 1156.737420][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.737420][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.737420][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.737420][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.737420][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.737420][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.737420][ T72] [ 1156.739287][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1156.739569][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1156.739569][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.739569][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.739569][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.739569][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.739569][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.739569][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.739569][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.739569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.739569][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.739569][ T72] netlink_unicast+0x449/0x710 [ 1156.739569][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.739569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.739569][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.739569][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.739569][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.739569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.739569][ T72] [ 1156.741769][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1156.741769][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.741769][ T72] ipv6_find_idev+0x102/0x170 [ 1156.741769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.741769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.741769][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.741769][ T72] netlink_unicast+0x449/0x710 [ 1156.741769][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.741769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.741769][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.741769][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.741769][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.741769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.741769][ T72] [ 1156.743465][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1156.743465][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.743465][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.743465][ T72] ipv6_find_idev+0x102/0x170 [ 1156.743465][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.743465][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.743465][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.743465][ T72] netlink_unicast+0x449/0x710 [ 1156.743465][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.743465][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.743465][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.743465][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.743465][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.743465][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.743465][ T72] [ 1156.745331][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1156.745650][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1156.745650][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.745650][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.745650][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.745650][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.745650][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.745650][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.745650][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.745650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.745650][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.745650][ T72] netlink_unicast+0x449/0x710 [ 1156.745650][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.745650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.745650][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.745650][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.745650][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.745650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.745650][ T72] [ 1156.747846][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1156.747846][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.747846][ T72] ipv6_find_idev+0x102/0x170 [ 1156.747846][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.747846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.747846][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.747846][ T72] netlink_unicast+0x449/0x710 [ 1156.747846][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.747846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.747846][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.747846][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.747846][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.747846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.747846][ T72] [ 1156.749530][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1156.749530][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.749530][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.749530][ T72] ipv6_find_idev+0x102/0x170 [ 1156.749530][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.749530][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.749530][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.749530][ T72] netlink_unicast+0x449/0x710 [ 1156.749530][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.749530][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.749530][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.749530][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.749530][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.749530][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.749530][ T72] [ 1156.751796][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1156.752079][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1156.752079][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.752079][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.752079][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.752079][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.752079][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.752079][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.752079][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.752079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.752079][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.752079][ T72] netlink_unicast+0x449/0x710 [ 1156.752079][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.752079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.752079][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.752079][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.752079][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.752079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.752079][ T72] [ 1156.754314][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1156.754314][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.754314][ T72] ipv6_find_idev+0x102/0x170 [ 1156.754314][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.754314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.754314][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.754314][ T72] netlink_unicast+0x449/0x710 [ 1156.754314][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.754314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.754314][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.754314][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.754314][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.754314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.754314][ T72] [ 1156.756049][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1156.756049][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.756049][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.756049][ T72] ipv6_find_idev+0x102/0x170 [ 1156.756049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.756049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.756049][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.756049][ T72] netlink_unicast+0x449/0x710 [ 1156.756049][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.756049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.756049][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.756049][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.756049][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.756049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.756049][ T72] [ 1156.757952][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1156.758251][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1156.758251][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.758251][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.758251][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.758251][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.758251][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.758251][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.758251][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.758251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.758251][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.758251][ T72] netlink_unicast+0x449/0x710 [ 1156.758251][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.758251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.758251][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.758251][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.758251][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.758251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.758251][ T72] [ 1156.760581][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1156.760581][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.760581][ T72] ipv6_find_idev+0x102/0x170 [ 1156.760581][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.760581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.760581][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.760581][ T72] netlink_unicast+0x449/0x710 [ 1156.760581][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.760581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.760581][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.760581][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.760581][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.760581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.760581][ T72] [ 1156.762531][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1156.762531][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.762531][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.762531][ T72] ipv6_find_idev+0x102/0x170 [ 1156.762531][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.762531][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.762531][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.762531][ T72] netlink_unicast+0x449/0x710 [ 1156.762531][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.762531][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.762531][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.762531][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.762531][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.762531][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.762531][ T72] [ 1156.764612][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1156.764952][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1156.764952][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.764952][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.764952][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.764952][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.764952][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.764952][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.764952][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.764952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.764952][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.764952][ T72] netlink_unicast+0x449/0x710 [ 1156.764952][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.764952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.764952][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.764952][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.764952][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.764952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.764952][ T72] [ 1156.767386][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1156.767386][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.767386][ T72] ipv6_find_idev+0x102/0x170 [ 1156.767386][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.767386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.767386][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.767386][ T72] netlink_unicast+0x449/0x710 [ 1156.767386][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.767386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.767386][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.767386][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.767386][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.767386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.767386][ T72] [ 1156.769277][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1156.769277][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.769277][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.769277][ T72] ipv6_find_idev+0x102/0x170 [ 1156.769277][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.769277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.769277][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.769277][ T72] netlink_unicast+0x449/0x710 [ 1156.769277][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.769277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.769277][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.769277][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.769277][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.769277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.769277][ T72] [ 1156.771376][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1156.771665][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1156.771665][ T72] netdev_get_by_index+0x5e/0x80 [ 1156.771665][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1156.771665][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1156.771665][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1156.771665][ T72] ipv6_add_addr+0x411/0x2000 [ 1156.771665][ T72] inet6_addr_add+0x30e/0xa40 [ 1156.771665][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1156.771665][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.771665][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.771665][ T72] netlink_unicast+0x449/0x710 [ 1156.771665][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.771665][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.771665][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.771665][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.771665][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.771665][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.771665][ T72] [ 1156.774189][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1156.774189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1156.774189][ T72] ipv6_find_idev+0x102/0x170 [ 1156.774189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.774189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.774189][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.774189][ T72] netlink_unicast+0x449/0x710 [ 1156.774189][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.774189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.774189][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.774189][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.774189][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.774189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.774189][ T72] [ 1156.776078][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1156.776078][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1156.776078][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1156.776078][ T72] ipv6_find_idev+0x102/0x170 [ 1156.776078][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1156.776078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1156.776078][ T72] netlink_rcv_skb+0x130/0x360 [ 1156.776078][ T72] netlink_unicast+0x449/0x710 [ 1156.776078][ T72] netlink_sendmsg+0x723/0xbe0 [ 1156.776078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1156.776078][ T72] ___sys_sendmsg+0xee/0x170 [ 1156.776078][ T72] __sys_sendmsg+0xcd/0x170 [ 1156.776078][ T72] do_syscall_64+0xc6/0x1e0 [ 1156.776078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1156.776078][ T72] [ 1167.014914][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1167.015377][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1167.015377][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.015377][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.015377][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.015377][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.015377][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.015377][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.015377][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.015377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.015377][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.015377][ T72] netlink_unicast+0x449/0x710 [ 1167.015377][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.015377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.015377][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.015377][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.015377][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.015377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.015377][ T72] [ 1167.017614][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1167.017614][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.017614][ T72] ipv6_find_idev+0x102/0x170 [ 1167.017614][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.017614][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.017614][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.017614][ T72] netlink_unicast+0x449/0x710 [ 1167.017614][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.017614][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.017614][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.017614][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.017614][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.017614][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.017614][ T72] [ 1167.019322][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1167.019322][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.019322][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.019322][ T72] ipv6_find_idev+0x102/0x170 [ 1167.019322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.019322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.019322][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.019322][ T72] netlink_unicast+0x449/0x710 [ 1167.019322][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.019322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.019322][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.019322][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.019322][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.019322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.019322][ T72] [ 1167.021188][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1167.021474][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1167.021474][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.021474][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.021474][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.021474][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.021474][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.021474][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.021474][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.021474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.021474][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.021474][ T72] netlink_unicast+0x449/0x710 [ 1167.021474][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.021474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.021474][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.021474][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.021474][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.021474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.021474][ T72] [ 1167.023702][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1167.023702][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.023702][ T72] ipv6_find_idev+0x102/0x170 [ 1167.023702][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.023702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.023702][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.023702][ T72] netlink_unicast+0x449/0x710 [ 1167.023702][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.023702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.023702][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.023702][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.023702][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.023702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.023702][ T72] [ 1167.025410][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1167.025410][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.025410][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.025410][ T72] ipv6_find_idev+0x102/0x170 [ 1167.025410][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.025410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.025410][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.025410][ T72] netlink_unicast+0x449/0x710 [ 1167.025410][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.025410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.025410][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.025410][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.025410][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.025410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.025410][ T72] [ 1167.027323][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1167.027607][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1167.027607][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.027607][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.027607][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.027607][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.027607][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.027607][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.027607][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.027607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.027607][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.027607][ T72] netlink_unicast+0x449/0x710 [ 1167.027607][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.027607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.027607][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.027607][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.027607][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.027607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.027607][ T72] [ 1167.029817][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1167.029817][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.029817][ T72] ipv6_find_idev+0x102/0x170 [ 1167.029817][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.029817][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.029817][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.029817][ T72] netlink_unicast+0x449/0x710 [ 1167.029817][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.029817][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.029817][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.029817][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.029817][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.029817][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.029817][ T72] [ 1167.031517][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1167.031517][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.031517][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.031517][ T72] ipv6_find_idev+0x102/0x170 [ 1167.031517][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.031517][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.031517][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.031517][ T72] netlink_unicast+0x449/0x710 [ 1167.031517][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.031517][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.031517][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.031517][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.031517][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.031517][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.031517][ T72] [ 1167.033380][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1167.033672][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1167.033672][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.033672][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.033672][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.033672][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.033672][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.033672][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.033672][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.033672][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.033672][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.033672][ T72] netlink_unicast+0x449/0x710 [ 1167.033672][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.033672][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.033672][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.033672][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.033672][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.033672][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.033672][ T72] [ 1167.035943][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1167.035943][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.035943][ T72] ipv6_find_idev+0x102/0x170 [ 1167.035943][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.035943][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.035943][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.035943][ T72] netlink_unicast+0x449/0x710 [ 1167.035943][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.035943][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.035943][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.035943][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.035943][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.035943][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.035943][ T72] [ 1167.037651][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1167.037651][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.037651][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.037651][ T72] ipv6_find_idev+0x102/0x170 [ 1167.037651][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.037651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.037651][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.037651][ T72] netlink_unicast+0x449/0x710 [ 1167.037651][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.037651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.037651][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.037651][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.037651][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.037651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.037651][ T72] [ 1167.039948][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1167.040240][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1167.040240][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.040240][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.040240][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.040240][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.040240][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.040240][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.040240][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.040240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.040240][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.040240][ T72] netlink_unicast+0x449/0x710 [ 1167.040240][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.040240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.040240][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.040240][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.040240][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.040240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.040240][ T72] [ 1167.042452][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1167.042452][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.042452][ T72] ipv6_find_idev+0x102/0x170 [ 1167.042452][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.042452][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.042452][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.042452][ T72] netlink_unicast+0x449/0x710 [ 1167.042452][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.042452][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.042452][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.042452][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.042452][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.042452][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.042452][ T72] [ 1167.044159][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1167.044159][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.044159][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.044159][ T72] ipv6_find_idev+0x102/0x170 [ 1167.044159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.044159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.044159][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.044159][ T72] netlink_unicast+0x449/0x710 [ 1167.044159][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.044159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.044159][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.044159][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.044159][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.044159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.044159][ T72] [ 1167.046079][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1167.046366][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1167.046366][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.046366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.046366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.046366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.046366][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.046366][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.046366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.046366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.046366][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.046366][ T72] netlink_unicast+0x449/0x710 [ 1167.046366][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.046366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.046366][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.046366][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.046366][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.046366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.046366][ T72] [ 1167.048692][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1167.048692][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.048692][ T72] ipv6_find_idev+0x102/0x170 [ 1167.048692][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.048692][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.048692][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.048692][ T72] netlink_unicast+0x449/0x710 [ 1167.048692][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.048692][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.048692][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.048692][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.048692][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.048692][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.048692][ T72] [ 1167.050582][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1167.050582][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.050582][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.050582][ T72] ipv6_find_idev+0x102/0x170 [ 1167.050582][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.050582][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.050582][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.050582][ T72] netlink_unicast+0x449/0x710 [ 1167.050582][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.050582][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.050582][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.050582][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.050582][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.050582][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.050582][ T72] [ 1167.052728][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1167.053075][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1167.053075][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.053075][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.053075][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.053075][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.053075][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.053075][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.053075][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.053075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.053075][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.053075][ T72] netlink_unicast+0x449/0x710 [ 1167.053075][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.053075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.053075][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.053075][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.053075][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.053075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.053075][ T72] [ 1167.055467][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1167.055467][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.055467][ T72] ipv6_find_idev+0x102/0x170 [ 1167.055467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.055467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.055467][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.055467][ T72] netlink_unicast+0x449/0x710 [ 1167.055467][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.055467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.055467][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.055467][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.055467][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.055467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.055467][ T72] [ 1167.057363][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1167.057363][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.057363][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.057363][ T72] ipv6_find_idev+0x102/0x170 [ 1167.057363][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.057363][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.057363][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.057363][ T72] netlink_unicast+0x449/0x710 [ 1167.057363][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.057363][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.057363][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.057363][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.057363][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.057363][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.057363][ T72] [ 1167.059449][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1167.059749][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1167.059749][ T72] netdev_get_by_index+0x5e/0x80 [ 1167.059749][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1167.059749][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1167.059749][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1167.059749][ T72] ipv6_add_addr+0x411/0x2000 [ 1167.059749][ T72] inet6_addr_add+0x30e/0xa40 [ 1167.059749][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1167.059749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.059749][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.059749][ T72] netlink_unicast+0x449/0x710 [ 1167.059749][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.059749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.059749][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.059749][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.059749][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.059749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.059749][ T72] [ 1167.062197][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1167.062197][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1167.062197][ T72] ipv6_find_idev+0x102/0x170 [ 1167.062197][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.062197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.062197][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.062197][ T72] netlink_unicast+0x449/0x710 [ 1167.062197][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.062197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.062197][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.062197][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.062197][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.062197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.062197][ T72] [ 1167.064143][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1167.064143][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1167.064143][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1167.064143][ T72] ipv6_find_idev+0x102/0x170 [ 1167.064143][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1167.064143][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1167.064143][ T72] netlink_rcv_skb+0x130/0x360 [ 1167.064143][ T72] netlink_unicast+0x449/0x710 [ 1167.064143][ T72] netlink_sendmsg+0x723/0xbe0 [ 1167.064143][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1167.064143][ T72] ___sys_sendmsg+0xee/0x170 [ 1167.064143][ T72] __sys_sendmsg+0xcd/0x170 [ 1167.064143][ T72] do_syscall_64+0xc6/0x1e0 [ 1167.064143][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1167.064143][ T72] [ 1177.302946][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1177.303349][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1177.303349][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.303349][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.303349][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.303349][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.303349][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.303349][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.303349][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.303349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.303349][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.303349][ T72] netlink_unicast+0x449/0x710 [ 1177.303349][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.303349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.303349][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.303349][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.303349][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.303349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.303349][ T72] [ 1177.305612][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1177.305612][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.305612][ T72] ipv6_find_idev+0x102/0x170 [ 1177.305612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.305612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.305612][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.305612][ T72] netlink_unicast+0x449/0x710 [ 1177.305612][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.305612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.305612][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.305612][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.305612][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.305612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.305612][ T72] [ 1177.307316][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1177.307316][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.307316][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.307316][ T72] ipv6_find_idev+0x102/0x170 [ 1177.307316][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.307316][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.307316][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.307316][ T72] netlink_unicast+0x449/0x710 [ 1177.307316][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.307316][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.307316][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.307316][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.307316][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.307316][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.307316][ T72] [ 1177.309198][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1177.309491][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1177.309491][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.309491][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.309491][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.309491][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.309491][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.309491][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.309491][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.309491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.309491][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.309491][ T72] netlink_unicast+0x449/0x710 [ 1177.309491][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.309491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.309491][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.309491][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.309491][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.309491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.309491][ T72] [ 1177.311718][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1177.311718][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.311718][ T72] ipv6_find_idev+0x102/0x170 [ 1177.311718][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.311718][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.311718][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.311718][ T72] netlink_unicast+0x449/0x710 [ 1177.311718][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.311718][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.311718][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.311718][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.311718][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.311718][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.311718][ T72] [ 1177.313421][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1177.313421][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.313421][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.313421][ T72] ipv6_find_idev+0x102/0x170 [ 1177.313421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.313421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.313421][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.313421][ T72] netlink_unicast+0x449/0x710 [ 1177.313421][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.313421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.313421][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.313421][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.313421][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.313421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.313421][ T72] [ 1177.315330][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1177.315625][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1177.315625][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.315625][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.315625][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.315625][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.315625][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.315625][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.315625][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.315625][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.315625][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.315625][ T72] netlink_unicast+0x449/0x710 [ 1177.315625][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.315625][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.315625][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.315625][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.315625][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.315625][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.315625][ T72] [ 1177.317821][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1177.317821][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.317821][ T72] ipv6_find_idev+0x102/0x170 [ 1177.317821][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.317821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.317821][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.317821][ T72] netlink_unicast+0x449/0x710 [ 1177.317821][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.317821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.317821][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.317821][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.317821][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.317821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.317821][ T72] [ 1177.319515][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1177.319515][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.319515][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.319515][ T72] ipv6_find_idev+0x102/0x170 [ 1177.319515][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.319515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.319515][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.319515][ T72] netlink_unicast+0x449/0x710 [ 1177.319515][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.319515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.319515][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.319515][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.319515][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.319515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.319515][ T72] [ 1177.321370][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1177.321656][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1177.321656][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.321656][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.321656][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.321656][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.321656][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.321656][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.321656][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.321656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.321656][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.321656][ T72] netlink_unicast+0x449/0x710 [ 1177.321656][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.321656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.321656][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.321656][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.321656][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.321656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.321656][ T72] [ 1177.323862][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1177.323862][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.323862][ T72] ipv6_find_idev+0x102/0x170 [ 1177.323862][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.323862][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.323862][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.323862][ T72] netlink_unicast+0x449/0x710 [ 1177.323862][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.323862][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.323862][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.323862][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.323862][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.323862][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.323862][ T72] [ 1177.325568][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1177.325568][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.325568][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.325568][ T72] ipv6_find_idev+0x102/0x170 [ 1177.325568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.325568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.325568][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.325568][ T72] netlink_unicast+0x449/0x710 [ 1177.325568][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.325568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.325568][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.325568][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.325568][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.325568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.325568][ T72] [ 1177.327830][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1177.328115][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1177.328115][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.328115][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.328115][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.328115][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.328115][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.328115][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.328115][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.328115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.328115][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.328115][ T72] netlink_unicast+0x449/0x710 [ 1177.328115][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.328115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.328115][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.328115][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.328115][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.328115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.328115][ T72] [ 1177.330340][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1177.330340][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.330340][ T72] ipv6_find_idev+0x102/0x170 [ 1177.330340][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.330340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.330340][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.330340][ T72] netlink_unicast+0x449/0x710 [ 1177.330340][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.330340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.330340][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.330340][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.330340][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.330340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.330340][ T72] [ 1177.332043][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1177.332043][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.332043][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.332043][ T72] ipv6_find_idev+0x102/0x170 [ 1177.332043][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.332043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.332043][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.332043][ T72] netlink_unicast+0x449/0x710 [ 1177.332043][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.332043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.332043][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.332043][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.332043][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.332043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.332043][ T72] [ 1177.333950][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1177.334233][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1177.334233][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.334233][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.334233][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.334233][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.334233][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.334233][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.334233][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.334233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.334233][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.334233][ T72] netlink_unicast+0x449/0x710 [ 1177.334233][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.334233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.334233][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.334233][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.334233][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.334233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.334233][ T72] [ 1177.336622][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1177.336622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.336622][ T72] ipv6_find_idev+0x102/0x170 [ 1177.336622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.336622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.336622][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.336622][ T72] netlink_unicast+0x449/0x710 [ 1177.336622][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.336622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.336622][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.336622][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.336622][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.336622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.336622][ T72] [ 1177.338516][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1177.338516][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.338516][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.338516][ T72] ipv6_find_idev+0x102/0x170 [ 1177.338516][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.338516][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.338516][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.338516][ T72] netlink_unicast+0x449/0x710 [ 1177.338516][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.338516][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.338516][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.338516][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.338516][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.338516][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.338516][ T72] [ 1177.340664][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1177.341011][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1177.341011][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.341011][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.341011][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.341011][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.341011][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.341011][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.341011][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.341011][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.341011][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.341011][ T72] netlink_unicast+0x449/0x710 [ 1177.341011][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.341011][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.341011][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.341011][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.341011][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.341011][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.341011][ T72] [ 1177.343918][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1177.343918][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.343918][ T72] ipv6_find_idev+0x102/0x170 [ 1177.343918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.343918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.343918][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.343918][ T72] netlink_unicast+0x449/0x710 [ 1177.343918][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.343918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.343918][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.343918][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.343918][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.343918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.343918][ T72] [ 1177.345819][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1177.345819][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.345819][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.345819][ T72] ipv6_find_idev+0x102/0x170 [ 1177.345819][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.345819][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.345819][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.345819][ T72] netlink_unicast+0x449/0x710 [ 1177.345819][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.345819][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.345819][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.345819][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.345819][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.345819][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.345819][ T72] [ 1177.347896][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1177.348183][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1177.348183][ T72] netdev_get_by_index+0x5e/0x80 [ 1177.348183][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1177.348183][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1177.348183][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1177.348183][ T72] ipv6_add_addr+0x411/0x2000 [ 1177.348183][ T72] inet6_addr_add+0x30e/0xa40 [ 1177.348183][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1177.348183][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.348183][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.348183][ T72] netlink_unicast+0x449/0x710 [ 1177.348183][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.348183][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.348183][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.348183][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.348183][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.348183][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.348183][ T72] [ 1177.350615][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1177.350615][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1177.350615][ T72] ipv6_find_idev+0x102/0x170 [ 1177.350615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.350615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.350615][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.350615][ T72] netlink_unicast+0x449/0x710 [ 1177.350615][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.350615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.350615][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.350615][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.350615][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.350615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.350615][ T72] [ 1177.352548][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1177.352548][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1177.352548][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1177.352548][ T72] ipv6_find_idev+0x102/0x170 [ 1177.352548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1177.352548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1177.352548][ T72] netlink_rcv_skb+0x130/0x360 [ 1177.352548][ T72] netlink_unicast+0x449/0x710 [ 1177.352548][ T72] netlink_sendmsg+0x723/0xbe0 [ 1177.352548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1177.352548][ T72] ___sys_sendmsg+0xee/0x170 [ 1177.352548][ T72] __sys_sendmsg+0xcd/0x170 [ 1177.352548][ T72] do_syscall_64+0xc6/0x1e0 [ 1177.352548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1177.352548][ T72] [ 1187.470953][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1187.471427][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1187.471427][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.471427][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.471427][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.471427][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.471427][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.471427][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.471427][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.471427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.471427][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.471427][ T72] netlink_unicast+0x449/0x710 [ 1187.471427][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.471427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.471427][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.471427][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.471427][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.471427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.471427][ T72] [ 1187.473630][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1187.473630][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.473630][ T72] ipv6_find_idev+0x102/0x170 [ 1187.473630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.473630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.473630][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.473630][ T72] netlink_unicast+0x449/0x710 [ 1187.473630][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.473630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.473630][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.473630][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.473630][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.473630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.473630][ T72] [ 1187.475346][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1187.475346][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.475346][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.475346][ T72] ipv6_find_idev+0x102/0x170 [ 1187.475346][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.475346][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.475346][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.475346][ T72] netlink_unicast+0x449/0x710 [ 1187.475346][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.475346][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.475346][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.475346][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.475346][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.475346][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.475346][ T72] [ 1187.477628][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1187.477939][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1187.477939][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.477939][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.477939][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.477939][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.477939][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.477939][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.477939][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.477939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.477939][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.477939][ T72] netlink_unicast+0x449/0x710 [ 1187.477939][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.477939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.477939][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.477939][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.477939][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.477939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.477939][ T72] [ 1187.480131][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1187.480131][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.480131][ T72] ipv6_find_idev+0x102/0x170 [ 1187.480131][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.480131][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.480131][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.480131][ T72] netlink_unicast+0x449/0x710 [ 1187.480131][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.480131][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.480131][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.480131][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.480131][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.480131][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.480131][ T72] [ 1187.481817][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1187.481817][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.481817][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.481817][ T72] ipv6_find_idev+0x102/0x170 [ 1187.481817][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.481817][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.481817][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.481817][ T72] netlink_unicast+0x449/0x710 [ 1187.481817][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.481817][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.481817][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.481817][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.481817][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.481817][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.481817][ T72] [ 1187.483661][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1187.483958][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1187.483958][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.483958][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.483958][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.483958][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.483958][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.483958][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.483958][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.483958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.483958][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.483958][ T72] netlink_unicast+0x449/0x710 [ 1187.483958][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.483958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.483958][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.483958][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.483958][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.483958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.483958][ T72] [ 1187.486150][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1187.486150][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.486150][ T72] ipv6_find_idev+0x102/0x170 [ 1187.486150][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.486150][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.486150][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.486150][ T72] netlink_unicast+0x449/0x710 [ 1187.486150][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.486150][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.486150][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.486150][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.486150][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.486150][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.486150][ T72] [ 1187.487864][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1187.487864][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.487864][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.487864][ T72] ipv6_find_idev+0x102/0x170 [ 1187.487864][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.487864][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.487864][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.487864][ T72] netlink_unicast+0x449/0x710 [ 1187.487864][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.487864][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.487864][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.487864][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.487864][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.487864][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.487864][ T72] [ 1187.489712][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1187.490429][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1187.490429][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.490429][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.490429][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.490429][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.490429][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.490429][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.490429][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.490429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.490429][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.490429][ T72] netlink_unicast+0x449/0x710 [ 1187.490429][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.490429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.490429][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.490429][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.490429][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.490429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.490429][ T72] [ 1187.492627][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1187.492627][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.492627][ T72] ipv6_find_idev+0x102/0x170 [ 1187.492627][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.492627][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.492627][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.492627][ T72] netlink_unicast+0x449/0x710 [ 1187.492627][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.492627][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.492627][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.492627][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.492627][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.492627][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.492627][ T72] [ 1187.494322][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1187.494322][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.494322][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.494322][ T72] ipv6_find_idev+0x102/0x170 [ 1187.494322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.494322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.494322][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.494322][ T72] netlink_unicast+0x449/0x710 [ 1187.494322][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.494322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.494322][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.494322][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.494322][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.494322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.494322][ T72] [ 1187.496262][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1187.496544][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1187.496544][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.496544][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.496544][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.496544][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.496544][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.496544][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.496544][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.496544][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.496544][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.496544][ T72] netlink_unicast+0x449/0x710 [ 1187.496544][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.496544][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.496544][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.496544][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.496544][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.496544][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.496544][ T72] [ 1187.498733][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1187.498733][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.498733][ T72] ipv6_find_idev+0x102/0x170 [ 1187.498733][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.498733][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.498733][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.498733][ T72] netlink_unicast+0x449/0x710 [ 1187.498733][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.498733][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.498733][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.498733][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.498733][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.498733][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.498733][ T72] [ 1187.500435][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1187.500435][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.500435][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.500435][ T72] ipv6_find_idev+0x102/0x170 [ 1187.500435][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.500435][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.500435][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.500435][ T72] netlink_unicast+0x449/0x710 [ 1187.500435][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.500435][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.500435][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.500435][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.500435][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.500435][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.500435][ T72] [ 1187.502339][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1187.502621][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1187.502621][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.502621][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.502621][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.502621][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.502621][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.502621][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.502621][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.502621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.502621][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.502621][ T72] netlink_unicast+0x449/0x710 [ 1187.502621][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.502621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.502621][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.502621][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.502621][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.502621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.502621][ T72] [ 1187.504913][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1187.504913][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.504913][ T72] ipv6_find_idev+0x102/0x170 [ 1187.504913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.504913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.504913][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.504913][ T72] netlink_unicast+0x449/0x710 [ 1187.504913][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.504913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.504913][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.504913][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.504913][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.504913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.504913][ T72] [ 1187.506804][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1187.506804][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.506804][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.506804][ T72] ipv6_find_idev+0x102/0x170 [ 1187.506804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.506804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.506804][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.506804][ T72] netlink_unicast+0x449/0x710 [ 1187.506804][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.506804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.506804][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.506804][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.506804][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.506804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.506804][ T72] [ 1187.508901][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1187.509188][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1187.509188][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.509188][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.509188][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.509188][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.509188][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.509188][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.509188][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.509188][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.509188][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.509188][ T72] netlink_unicast+0x449/0x710 [ 1187.509188][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.509188][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.509188][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.509188][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.509188][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.509188][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.509188][ T72] [ 1187.511645][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1187.511645][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.511645][ T72] ipv6_find_idev+0x102/0x170 [ 1187.511645][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.511645][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.511645][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.511645][ T72] netlink_unicast+0x449/0x710 [ 1187.511645][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.511645][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.511645][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.511645][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.511645][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.511645][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.511645][ T72] [ 1187.513529][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1187.513529][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.513529][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.513529][ T72] ipv6_find_idev+0x102/0x170 [ 1187.513529][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.513529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.513529][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.513529][ T72] netlink_unicast+0x449/0x710 [ 1187.513529][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.513529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.513529][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.513529][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.513529][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.513529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.513529][ T72] [ 1187.515631][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1187.515973][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1187.515973][ T72] netdev_get_by_index+0x5e/0x80 [ 1187.515973][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1187.515973][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1187.515973][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1187.515973][ T72] ipv6_add_addr+0x411/0x2000 [ 1187.515973][ T72] inet6_addr_add+0x30e/0xa40 [ 1187.515973][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1187.515973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.515973][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.515973][ T72] netlink_unicast+0x449/0x710 [ 1187.515973][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.515973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.515973][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.515973][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.515973][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.515973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.515973][ T72] [ 1187.518361][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1187.518361][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1187.518361][ T72] ipv6_find_idev+0x102/0x170 [ 1187.518361][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.518361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.518361][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.518361][ T72] netlink_unicast+0x449/0x710 [ 1187.518361][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.518361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.518361][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.518361][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.518361][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.518361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.518361][ T72] [ 1187.520246][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1187.520246][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1187.520246][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1187.520246][ T72] ipv6_find_idev+0x102/0x170 [ 1187.520246][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1187.520246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1187.520246][ T72] netlink_rcv_skb+0x130/0x360 [ 1187.520246][ T72] netlink_unicast+0x449/0x710 [ 1187.520246][ T72] netlink_sendmsg+0x723/0xbe0 [ 1187.520246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1187.520246][ T72] ___sys_sendmsg+0xee/0x170 [ 1187.520246][ T72] __sys_sendmsg+0xcd/0x170 [ 1187.520246][ T72] do_syscall_64+0xc6/0x1e0 [ 1187.520246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1187.520246][ T72] [ 1197.758909][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1197.759382][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1197.759382][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.759382][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.759382][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.759382][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.759382][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.759382][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.759382][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.759382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.759382][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.759382][ T72] netlink_unicast+0x449/0x710 [ 1197.759382][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.759382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.759382][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.759382][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.759382][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.759382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.759382][ T72] [ 1197.761585][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1197.761585][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.761585][ T72] ipv6_find_idev+0x102/0x170 [ 1197.761585][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.761585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.761585][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.761585][ T72] netlink_unicast+0x449/0x710 [ 1197.761585][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.761585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.761585][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.761585][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.761585][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.761585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.761585][ T72] [ 1197.763278][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1197.763278][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.763278][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.763278][ T72] ipv6_find_idev+0x102/0x170 [ 1197.763278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.763278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.763278][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.763278][ T72] netlink_unicast+0x449/0x710 [ 1197.763278][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.763278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.763278][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.763278][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.763278][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.763278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.763278][ T72] [ 1197.765132][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1197.765431][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1197.765431][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.765431][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.765431][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.765431][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.765431][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.765431][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.765431][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.765431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.765431][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.765431][ T72] netlink_unicast+0x449/0x710 [ 1197.765431][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.765431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.765431][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.765431][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.765431][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.765431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.765431][ T72] [ 1197.767644][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1197.767644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.767644][ T72] ipv6_find_idev+0x102/0x170 [ 1197.767644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.767644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.767644][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.767644][ T72] netlink_unicast+0x449/0x710 [ 1197.767644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.767644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.767644][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.767644][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.767644][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.767644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.767644][ T72] [ 1197.769354][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1197.769354][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.769354][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.769354][ T72] ipv6_find_idev+0x102/0x170 [ 1197.769354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.769354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.769354][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.769354][ T72] netlink_unicast+0x449/0x710 [ 1197.769354][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.769354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.769354][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.769354][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.769354][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.769354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.769354][ T72] [ 1197.771608][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1197.771907][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1197.771907][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.771907][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.771907][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.771907][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.771907][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.771907][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.771907][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.771907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.771907][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.771907][ T72] netlink_unicast+0x449/0x710 [ 1197.771907][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.771907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.771907][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.771907][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.771907][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.771907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.771907][ T72] [ 1197.774115][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1197.774115][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.774115][ T72] ipv6_find_idev+0x102/0x170 [ 1197.774115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.774115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.774115][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.774115][ T72] netlink_unicast+0x449/0x710 [ 1197.774115][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.774115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.774115][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.774115][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.774115][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.774115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.774115][ T72] [ 1197.775822][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1197.775822][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.775822][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.775822][ T72] ipv6_find_idev+0x102/0x170 [ 1197.775822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.775822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.775822][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.775822][ T72] netlink_unicast+0x449/0x710 [ 1197.775822][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.775822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.775822][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.775822][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.775822][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.775822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.775822][ T72] [ 1197.777689][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1197.778420][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1197.778420][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.778420][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.778420][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.778420][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.778420][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.778420][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.778420][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.778420][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.778420][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.778420][ T72] netlink_unicast+0x449/0x710 [ 1197.778420][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.778420][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.778420][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.778420][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.778420][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.778420][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.778420][ T72] [ 1197.780637][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1197.780637][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.780637][ T72] ipv6_find_idev+0x102/0x170 [ 1197.780637][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.780637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.780637][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.780637][ T72] netlink_unicast+0x449/0x710 [ 1197.780637][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.780637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.780637][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.780637][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.780637][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.780637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.780637][ T72] [ 1197.782332][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1197.782332][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.782332][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.782332][ T72] ipv6_find_idev+0x102/0x170 [ 1197.782332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.782332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.782332][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.782332][ T72] netlink_unicast+0x449/0x710 [ 1197.782332][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.782332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.782332][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.782332][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.782332][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.782332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.782332][ T72] [ 1197.784218][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1197.784502][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1197.784502][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.784502][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.784502][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.784502][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.784502][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.784502][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.784502][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.784502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.784502][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.784502][ T72] netlink_unicast+0x449/0x710 [ 1197.784502][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.784502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.784502][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.784502][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.784502][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.784502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.784502][ T72] [ 1197.786724][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1197.786724][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.786724][ T72] ipv6_find_idev+0x102/0x170 [ 1197.786724][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.786724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.786724][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.786724][ T72] netlink_unicast+0x449/0x710 [ 1197.786724][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.786724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.786724][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.786724][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.786724][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.786724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.786724][ T72] [ 1197.788423][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1197.788423][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.788423][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.788423][ T72] ipv6_find_idev+0x102/0x170 [ 1197.788423][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.788423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.788423][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.788423][ T72] netlink_unicast+0x449/0x710 [ 1197.788423][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.788423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.788423][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.788423][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.788423][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.788423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.788423][ T72] [ 1197.790415][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1197.790699][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1197.790699][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.790699][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.790699][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.790699][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.790699][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.790699][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.790699][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.790699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.790699][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.790699][ T72] netlink_unicast+0x449/0x710 [ 1197.790699][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.790699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.790699][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.790699][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.790699][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.790699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.790699][ T72] [ 1197.793021][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1197.793021][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.793021][ T72] ipv6_find_idev+0x102/0x170 [ 1197.793021][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.793021][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.793021][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.793021][ T72] netlink_unicast+0x449/0x710 [ 1197.793021][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.793021][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.793021][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.793021][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.793021][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.793021][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.793021][ T72] [ 1197.794917][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1197.794917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.794917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.794917][ T72] ipv6_find_idev+0x102/0x170 [ 1197.794917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.794917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.794917][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.794917][ T72] netlink_unicast+0x449/0x710 [ 1197.794917][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.794917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.794917][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.794917][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.794917][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.794917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.794917][ T72] [ 1197.796988][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1197.797273][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1197.797273][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.797273][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.797273][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.797273][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.797273][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.797273][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.797273][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.797273][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.797273][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.797273][ T72] netlink_unicast+0x449/0x710 [ 1197.797273][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.797273][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.797273][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.797273][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.797273][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.797273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.797273][ T72] [ 1197.799806][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1197.799806][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.799806][ T72] ipv6_find_idev+0x102/0x170 [ 1197.799806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.799806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.799806][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.799806][ T72] netlink_unicast+0x449/0x710 [ 1197.799806][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.799806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.799806][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.799806][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.799806][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.799806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.799806][ T72] [ 1197.801679][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1197.801679][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.801679][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.801679][ T72] ipv6_find_idev+0x102/0x170 [ 1197.801679][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.801679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.801679][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.801679][ T72] netlink_unicast+0x449/0x710 [ 1197.801679][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.801679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.801679][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.801679][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.801679][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.801679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.801679][ T72] [ 1197.803762][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1197.804051][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1197.804051][ T72] netdev_get_by_index+0x5e/0x80 [ 1197.804051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1197.804051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1197.804051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1197.804051][ T72] ipv6_add_addr+0x411/0x2000 [ 1197.804051][ T72] inet6_addr_add+0x30e/0xa40 [ 1197.804051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1197.804051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.804051][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.804051][ T72] netlink_unicast+0x449/0x710 [ 1197.804051][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.804051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.804051][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.804051][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.804051][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.804051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.804051][ T72] [ 1197.806483][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1197.806483][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1197.806483][ T72] ipv6_find_idev+0x102/0x170 [ 1197.806483][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.806483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.806483][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.806483][ T72] netlink_unicast+0x449/0x710 [ 1197.806483][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.806483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.806483][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.806483][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.806483][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.806483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.806483][ T72] [ 1197.808293][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1197.808293][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1197.808293][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1197.808293][ T72] ipv6_find_idev+0x102/0x170 [ 1197.808293][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1197.808293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1197.808293][ T72] netlink_rcv_skb+0x130/0x360 [ 1197.808293][ T72] netlink_unicast+0x449/0x710 [ 1197.808293][ T72] netlink_sendmsg+0x723/0xbe0 [ 1197.808293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1197.808293][ T72] ___sys_sendmsg+0xee/0x170 [ 1197.808293][ T72] __sys_sendmsg+0xcd/0x170 [ 1197.808293][ T72] do_syscall_64+0xc6/0x1e0 [ 1197.808293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1197.808293][ T72] [ 1208.046884][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1208.047538][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1208.047538][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.047538][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.047538][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.047538][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.047538][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.047538][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.047538][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.047538][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.047538][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.047538][ T72] netlink_unicast+0x449/0x710 [ 1208.047538][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.047538][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.047538][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.047538][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.047538][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.047538][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.047538][ T72] [ 1208.050216][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1208.050216][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.050216][ T72] ipv6_find_idev+0x102/0x170 [ 1208.050216][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.050216][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.050216][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.050216][ T72] netlink_unicast+0x449/0x710 [ 1208.050216][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.050216][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.050216][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.050216][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.050216][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.050216][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.050216][ T72] [ 1208.051772][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1208.051772][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.051772][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.051772][ T72] ipv6_find_idev+0x102/0x170 [ 1208.051772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.051772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.051772][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.051772][ T72] netlink_unicast+0x449/0x710 [ 1208.051772][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.051772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.051772][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.051772][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.051772][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.051772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.051772][ T72] [ 1208.054153][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1208.054446][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1208.054446][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.054446][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.054446][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.054446][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.054446][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.054446][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.054446][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.054446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.054446][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.054446][ T72] netlink_unicast+0x449/0x710 [ 1208.054446][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.054446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.054446][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.054446][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.054446][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.054446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.054446][ T72] [ 1208.056948][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1208.056948][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.056948][ T72] ipv6_find_idev+0x102/0x170 [ 1208.056948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.056948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.056948][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.056948][ T72] netlink_unicast+0x449/0x710 [ 1208.056948][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.056948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.056948][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.056948][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.056948][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.056948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.056948][ T72] [ 1208.059034][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1208.059034][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.059034][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.059034][ T72] ipv6_find_idev+0x102/0x170 [ 1208.059034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.059034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.059034][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.059034][ T72] netlink_unicast+0x449/0x710 [ 1208.059034][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.059034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.059034][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.059034][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.059034][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.059034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.059034][ T72] [ 1208.060773][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1208.061056][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1208.061056][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.061056][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.061056][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.061056][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.061056][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.061056][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.061056][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.061056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.061056][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.061056][ T72] netlink_unicast+0x449/0x710 [ 1208.061056][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.061056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.061056][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.061056][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.061056][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.061056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.061056][ T72] [ 1208.063164][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1208.063164][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.063164][ T72] ipv6_find_idev+0x102/0x170 [ 1208.063164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.063164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.063164][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.063164][ T72] netlink_unicast+0x449/0x710 [ 1208.063164][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.063164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.063164][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.063164][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.063164][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.063164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.063164][ T72] [ 1208.064705][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1208.064705][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.064705][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.064705][ T72] ipv6_find_idev+0x102/0x170 [ 1208.064705][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.064705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.064705][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.064705][ T72] netlink_unicast+0x449/0x710 [ 1208.064705][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.064705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.064705][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.064705][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.064705][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.064705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.064705][ T72] [ 1208.066444][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1208.066715][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1208.066715][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.066715][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.066715][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.066715][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.066715][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.066715][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.066715][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.066715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.066715][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.066715][ T72] netlink_unicast+0x449/0x710 [ 1208.066715][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.066715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.066715][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.066715][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.066715][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.066715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.066715][ T72] [ 1208.068785][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1208.068785][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.068785][ T72] ipv6_find_idev+0x102/0x170 [ 1208.068785][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.068785][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.068785][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.068785][ T72] netlink_unicast+0x449/0x710 [ 1208.068785][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.068785][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.068785][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.068785][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.068785][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.068785][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.068785][ T72] [ 1208.070340][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1208.070340][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.070340][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.070340][ T72] ipv6_find_idev+0x102/0x170 [ 1208.070340][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.070340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.070340][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.070340][ T72] netlink_unicast+0x449/0x710 [ 1208.070340][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.070340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.070340][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.070340][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.070340][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.070340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.070340][ T72] [ 1208.072473][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1208.073089][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1208.073089][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.073089][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.073089][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.073089][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.073089][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.073089][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.073089][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.073089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.073089][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.073089][ T72] netlink_unicast+0x449/0x710 [ 1208.073089][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.073089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.073089][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.073089][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.073089][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.073089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.073089][ T72] [ 1208.075096][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1208.075096][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.075096][ T72] ipv6_find_idev+0x102/0x170 [ 1208.075096][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.075096][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.075096][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.075096][ T72] netlink_unicast+0x449/0x710 [ 1208.075096][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.075096][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.075096][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.075096][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.075096][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.075096][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.075096][ T72] [ 1208.076630][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1208.076630][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.076630][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.076630][ T72] ipv6_find_idev+0x102/0x170 [ 1208.076630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.076630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.076630][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.076630][ T72] netlink_unicast+0x449/0x710 [ 1208.076630][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.076630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.076630][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.076630][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.076630][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.076630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.076630][ T72] [ 1208.078314][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1208.078602][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1208.078602][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.078602][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.078602][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.078602][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.078602][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.078602][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.078602][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.078602][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.078602][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.078602][ T72] netlink_unicast+0x449/0x710 [ 1208.078602][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.078602][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.078602][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.078602][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.078602][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.078602][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.078602][ T72] [ 1208.080604][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1208.080604][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.080604][ T72] ipv6_find_idev+0x102/0x170 [ 1208.080604][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.080604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.080604][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.080604][ T72] netlink_unicast+0x449/0x710 [ 1208.080604][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.080604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.080604][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.080604][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.080604][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.080604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.080604][ T72] [ 1208.082199][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1208.082199][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.082199][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.082199][ T72] ipv6_find_idev+0x102/0x170 [ 1208.082199][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.082199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.082199][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.082199][ T72] netlink_unicast+0x449/0x710 [ 1208.082199][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.082199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.082199][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.082199][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.082199][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.082199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.082199][ T72] [ 1208.084189][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1208.084499][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1208.084499][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.084499][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.084499][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.084499][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.084499][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.084499][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.084499][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.084499][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.084499][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.084499][ T72] netlink_unicast+0x449/0x710 [ 1208.084499][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.084499][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.084499][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.084499][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.084499][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.084499][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.084499][ T72] [ 1208.086667][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1208.086667][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.086667][ T72] ipv6_find_idev+0x102/0x170 [ 1208.086667][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.086667][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.086667][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.086667][ T72] netlink_unicast+0x449/0x710 [ 1208.086667][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.086667][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.086667][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.086667][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.086667][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.086667][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.086667][ T72] [ 1208.088396][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1208.088396][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.088396][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.088396][ T72] ipv6_find_idev+0x102/0x170 [ 1208.088396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.088396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.088396][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.088396][ T72] netlink_unicast+0x449/0x710 [ 1208.088396][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.088396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.088396][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.088396][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.088396][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.088396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.088396][ T72] [ 1208.090349][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1208.090666][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1208.090666][ T72] netdev_get_by_index+0x5e/0x80 [ 1208.090666][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1208.090666][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1208.090666][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1208.090666][ T72] ipv6_add_addr+0x411/0x2000 [ 1208.090666][ T72] inet6_addr_add+0x30e/0xa40 [ 1208.090666][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1208.090666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.090666][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.090666][ T72] netlink_unicast+0x449/0x710 [ 1208.090666][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.090666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.090666][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.090666][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.090666][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.090666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.090666][ T72] [ 1208.092846][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1208.092846][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1208.092846][ T72] ipv6_find_idev+0x102/0x170 [ 1208.092846][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.092846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.092846][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.092846][ T72] netlink_unicast+0x449/0x710 [ 1208.092846][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.092846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.092846][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.092846][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.092846][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.092846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.092846][ T72] [ 1208.094689][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1208.094689][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1208.094689][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1208.094689][ T72] ipv6_find_idev+0x102/0x170 [ 1208.094689][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1208.094689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1208.094689][ T72] netlink_rcv_skb+0x130/0x360 [ 1208.094689][ T72] netlink_unicast+0x449/0x710 [ 1208.094689][ T72] netlink_sendmsg+0x723/0xbe0 [ 1208.094689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1208.094689][ T72] ___sys_sendmsg+0xee/0x170 [ 1208.094689][ T72] __sys_sendmsg+0xcd/0x170 [ 1208.094689][ T72] do_syscall_64+0xc6/0x1e0 [ 1208.094689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1208.094689][ T72] [ 1218.334874][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1218.335326][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1218.335326][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.335326][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.335326][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.335326][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.335326][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.335326][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.335326][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.335326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.335326][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.335326][ T72] netlink_unicast+0x449/0x710 [ 1218.335326][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.335326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.335326][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.335326][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.335326][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.335326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.335326][ T72] [ 1218.337353][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1218.337353][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.337353][ T72] ipv6_find_idev+0x102/0x170 [ 1218.337353][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.337353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.337353][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.337353][ T72] netlink_unicast+0x449/0x710 [ 1218.337353][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.337353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.337353][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.337353][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.337353][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.337353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.337353][ T72] [ 1218.338983][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1218.338983][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.338983][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.338983][ T72] ipv6_find_idev+0x102/0x170 [ 1218.338983][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.338983][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.338983][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.338983][ T72] netlink_unicast+0x449/0x710 [ 1218.338983][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.338983][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.338983][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.338983][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.338983][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.338983][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.338983][ T72] [ 1218.340695][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1218.340989][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1218.340989][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.340989][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.340989][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.340989][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.340989][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.340989][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.340989][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.340989][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.340989][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.340989][ T72] netlink_unicast+0x449/0x710 [ 1218.340989][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.340989][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.340989][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.340989][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.340989][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.340989][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.340989][ T72] [ 1218.342993][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1218.342993][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.342993][ T72] ipv6_find_idev+0x102/0x170 [ 1218.342993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.342993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.342993][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.342993][ T72] netlink_unicast+0x449/0x710 [ 1218.342993][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.342993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.342993][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.342993][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.342993][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.342993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.342993][ T72] [ 1218.344531][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1218.344531][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.344531][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.344531][ T72] ipv6_find_idev+0x102/0x170 [ 1218.344531][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.344531][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.344531][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.344531][ T72] netlink_unicast+0x449/0x710 [ 1218.344531][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.344531][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.344531][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.344531][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.344531][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.344531][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.344531][ T72] [ 1218.346239][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1218.346505][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1218.346505][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.346505][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.346505][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.346505][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.346505][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.346505][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.346505][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.346505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.346505][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.346505][ T72] netlink_unicast+0x449/0x710 [ 1218.346505][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.346505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.346505][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.346505][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.346505][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.346505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.346505][ T72] [ 1218.348504][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1218.348504][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.348504][ T72] ipv6_find_idev+0x102/0x170 [ 1218.348504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.348504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.348504][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.348504][ T72] netlink_unicast+0x449/0x710 [ 1218.348504][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.348504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.348504][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.348504][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.348504][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.348504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.348504][ T72] [ 1218.350041][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1218.350041][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.350041][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.350041][ T72] ipv6_find_idev+0x102/0x170 [ 1218.350041][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.350041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.350041][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.350041][ T72] netlink_unicast+0x449/0x710 [ 1218.350041][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.350041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.350041][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.350041][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.350041][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.350041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.350041][ T72] [ 1218.351719][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1218.352423][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1218.352423][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.352423][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.352423][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.352423][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.352423][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.352423][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.352423][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.352423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.352423][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.352423][ T72] netlink_unicast+0x449/0x710 [ 1218.352423][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.352423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.352423][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.352423][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.352423][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.352423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.352423][ T72] [ 1218.354403][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1218.354403][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.354403][ T72] ipv6_find_idev+0x102/0x170 [ 1218.354403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.354403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.354403][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.354403][ T72] netlink_unicast+0x449/0x710 [ 1218.354403][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.354403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.354403][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.354403][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.354403][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.354403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.354403][ T72] [ 1218.355939][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1218.355939][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.355939][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.355939][ T72] ipv6_find_idev+0x102/0x170 [ 1218.355939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.355939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.355939][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.355939][ T72] netlink_unicast+0x449/0x710 [ 1218.355939][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.355939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.355939][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.355939][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.355939][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.355939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.355939][ T72] [ 1218.357673][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1218.357999][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1218.357999][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.357999][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.357999][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.357999][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.357999][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.357999][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.357999][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.357999][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.357999][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.357999][ T72] netlink_unicast+0x449/0x710 [ 1218.357999][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.357999][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.357999][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.357999][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.357999][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.357999][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.357999][ T72] [ 1218.359987][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1218.359987][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.359987][ T72] ipv6_find_idev+0x102/0x170 [ 1218.359987][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.359987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.359987][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.359987][ T72] netlink_unicast+0x449/0x710 [ 1218.359987][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.359987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.359987][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.359987][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.359987][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.359987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.359987][ T72] [ 1218.361555][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1218.361555][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.361555][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.361555][ T72] ipv6_find_idev+0x102/0x170 [ 1218.361555][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.361555][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.361555][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.361555][ T72] netlink_unicast+0x449/0x710 [ 1218.361555][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.361555][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.361555][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.361555][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.361555][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.361555][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.361555][ T72] [ 1218.363288][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1218.363603][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1218.363603][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.363603][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.363603][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.363603][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.363603][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.363603][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.363603][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.363603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.363603][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.363603][ T72] netlink_unicast+0x449/0x710 [ 1218.363603][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.363603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.363603][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.363603][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.363603][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.363603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.363603][ T72] [ 1218.365624][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1218.365624][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.365624][ T72] ipv6_find_idev+0x102/0x170 [ 1218.365624][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.365624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.365624][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.365624][ T72] netlink_unicast+0x449/0x710 [ 1218.365624][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.365624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.365624][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.365624][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.365624][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.365624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.365624][ T72] [ 1218.367333][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1218.367333][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.367333][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.367333][ T72] ipv6_find_idev+0x102/0x170 [ 1218.367333][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.367333][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.367333][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.367333][ T72] netlink_unicast+0x449/0x710 [ 1218.367333][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.367333][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.367333][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.367333][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.367333][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.367333][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.367333][ T72] [ 1218.369290][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1218.369612][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1218.369612][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.369612][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.369612][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.369612][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.369612][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.369612][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.369612][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.369612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.369612][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.369612][ T72] netlink_unicast+0x449/0x710 [ 1218.369612][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.369612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.369612][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.369612][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.369612][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.369612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.369612][ T72] [ 1218.371835][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1218.371835][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.371835][ T72] ipv6_find_idev+0x102/0x170 [ 1218.371835][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.371835][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.371835][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.371835][ T72] netlink_unicast+0x449/0x710 [ 1218.371835][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.371835][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.371835][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.371835][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.371835][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.371835][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.371835][ T72] [ 1218.373546][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1218.373546][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.373546][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.373546][ T72] ipv6_find_idev+0x102/0x170 [ 1218.373546][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.373546][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.373546][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.373546][ T72] netlink_unicast+0x449/0x710 [ 1218.373546][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.373546][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.373546][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.373546][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.373546][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.373546][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.373546][ T72] [ 1218.375469][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1218.375844][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1218.375844][ T72] netdev_get_by_index+0x5e/0x80 [ 1218.375844][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1218.375844][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1218.375844][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1218.375844][ T72] ipv6_add_addr+0x411/0x2000 [ 1218.375844][ T72] inet6_addr_add+0x30e/0xa40 [ 1218.375844][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1218.375844][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.375844][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.375844][ T72] netlink_unicast+0x449/0x710 [ 1218.375844][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.375844][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.375844][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.375844][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.375844][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.375844][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.375844][ T72] [ 1218.377952][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1218.377952][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1218.377952][ T72] ipv6_find_idev+0x102/0x170 [ 1218.377952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.377952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.377952][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.377952][ T72] netlink_unicast+0x449/0x710 [ 1218.377952][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.377952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.377952][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.377952][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.377952][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.377952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.377952][ T72] [ 1218.379666][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1218.379666][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1218.379666][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1218.379666][ T72] ipv6_find_idev+0x102/0x170 [ 1218.379666][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1218.379666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1218.379666][ T72] netlink_rcv_skb+0x130/0x360 [ 1218.379666][ T72] netlink_unicast+0x449/0x710 [ 1218.379666][ T72] netlink_sendmsg+0x723/0xbe0 [ 1218.379666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1218.379666][ T72] ___sys_sendmsg+0xee/0x170 [ 1218.379666][ T72] __sys_sendmsg+0xcd/0x170 [ 1218.379666][ T72] do_syscall_64+0xc6/0x1e0 [ 1218.379666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1218.379666][ T72] [ 1228.622888][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1228.623391][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1228.623391][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.623391][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.623391][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.623391][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.623391][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.623391][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.623391][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.623391][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.623391][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.623391][ T72] netlink_unicast+0x449/0x710 [ 1228.623391][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.623391][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.623391][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.623391][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.623391][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.623391][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.623391][ T72] [ 1228.625418][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1228.625418][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.625418][ T72] ipv6_find_idev+0x102/0x170 [ 1228.625418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.625418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.625418][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.625418][ T72] netlink_unicast+0x449/0x710 [ 1228.625418][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.625418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.625418][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.625418][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.625418][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.625418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.625418][ T72] [ 1228.626977][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1228.626977][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.626977][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.626977][ T72] ipv6_find_idev+0x102/0x170 [ 1228.626977][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.626977][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.626977][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.626977][ T72] netlink_unicast+0x449/0x710 [ 1228.626977][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.626977][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.626977][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.626977][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.626977][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.626977][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.626977][ T72] [ 1228.628692][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1228.628986][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1228.628986][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.628986][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.628986][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.628986][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.628986][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.628986][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.628986][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.628986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.628986][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.628986][ T72] netlink_unicast+0x449/0x710 [ 1228.628986][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.628986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.628986][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.628986][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.628986][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.628986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.628986][ T72] [ 1228.630974][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1228.630974][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.630974][ T72] ipv6_find_idev+0x102/0x170 [ 1228.630974][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.630974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.630974][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.630974][ T72] netlink_unicast+0x449/0x710 [ 1228.630974][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.630974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.630974][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.630974][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.630974][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.630974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.630974][ T72] [ 1228.633021][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1228.633021][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.633021][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.633021][ T72] ipv6_find_idev+0x102/0x170 [ 1228.633021][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.633021][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.633021][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.633021][ T72] netlink_unicast+0x449/0x710 [ 1228.633021][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.633021][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.633021][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.633021][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.633021][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.633021][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.633021][ T72] [ 1228.634701][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1228.634989][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1228.634989][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.634989][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.634989][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.634989][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.634989][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.634989][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.634989][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.634989][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.634989][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.634989][ T72] netlink_unicast+0x449/0x710 [ 1228.634989][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.634989][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.634989][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.634989][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.634989][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.634989][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.634989][ T72] [ 1228.636984][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1228.636984][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.636984][ T72] ipv6_find_idev+0x102/0x170 [ 1228.636984][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.636984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.636984][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.636984][ T72] netlink_unicast+0x449/0x710 [ 1228.636984][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.636984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.636984][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.636984][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.636984][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.636984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.636984][ T72] [ 1228.638508][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1228.638508][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.638508][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.638508][ T72] ipv6_find_idev+0x102/0x170 [ 1228.638508][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.638508][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.638508][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.638508][ T72] netlink_unicast+0x449/0x710 [ 1228.638508][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.638508][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.638508][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.638508][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.638508][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.638508][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.638508][ T72] [ 1228.640186][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1228.640451][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1228.640451][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.640451][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.640451][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.640451][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.640451][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.640451][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.640451][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.640451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.640451][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.640451][ T72] netlink_unicast+0x449/0x710 [ 1228.640451][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.640451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.640451][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.640451][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.640451][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.640451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.640451][ T72] [ 1228.642436][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1228.642436][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.642436][ T72] ipv6_find_idev+0x102/0x170 [ 1228.642436][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.642436][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.642436][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.642436][ T72] netlink_unicast+0x449/0x710 [ 1228.642436][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.642436][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.642436][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.642436][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.642436][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.642436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.642436][ T72] [ 1228.643964][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1228.643964][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.643964][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.643964][ T72] ipv6_find_idev+0x102/0x170 [ 1228.643964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.643964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.643964][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.643964][ T72] netlink_unicast+0x449/0x710 [ 1228.643964][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.643964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.643964][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.643964][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.643964][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.643964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.643964][ T72] [ 1228.646070][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1228.646658][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1228.646658][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.646658][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.646658][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.646658][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.646658][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.646658][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.646658][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.646658][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.646658][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.646658][ T72] netlink_unicast+0x449/0x710 [ 1228.646658][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.646658][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.646658][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.646658][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.646658][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.646658][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.646658][ T72] [ 1228.648636][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1228.648636][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.648636][ T72] ipv6_find_idev+0x102/0x170 [ 1228.648636][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.648636][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.648636][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.648636][ T72] netlink_unicast+0x449/0x710 [ 1228.648636][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.648636][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.648636][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.648636][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.648636][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.648636][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.648636][ T72] [ 1228.650559][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1228.650559][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.650559][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.650559][ T72] ipv6_find_idev+0x102/0x170 [ 1228.650559][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.650559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.650559][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.650559][ T72] netlink_unicast+0x449/0x710 [ 1228.650559][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.650559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.650559][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.650559][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.650559][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.650559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.650559][ T72] [ 1228.652237][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1228.652512][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1228.652512][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.652512][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.652512][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.652512][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.652512][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.652512][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.652512][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.652512][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.652512][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.652512][ T72] netlink_unicast+0x449/0x710 [ 1228.652512][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.652512][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.652512][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.652512][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.652512][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.652512][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.652512][ T72] [ 1228.654498][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1228.654498][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.654498][ T72] ipv6_find_idev+0x102/0x170 [ 1228.654498][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.654498][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.654498][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.654498][ T72] netlink_unicast+0x449/0x710 [ 1228.654498][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.654498][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.654498][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.654498][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.654498][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.654498][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.654498][ T72] [ 1228.656457][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1228.656457][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.656457][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.656457][ T72] ipv6_find_idev+0x102/0x170 [ 1228.656457][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.656457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.656457][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.656457][ T72] netlink_unicast+0x449/0x710 [ 1228.656457][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.656457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.656457][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.656457][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.656457][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.656457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.656457][ T72] [ 1228.658375][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1228.658684][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1228.658684][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.658684][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.658684][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.658684][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.658684][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.658684][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.658684][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.658684][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.658684][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.658684][ T72] netlink_unicast+0x449/0x710 [ 1228.658684][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.658684][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.658684][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.658684][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.658684][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.658684][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.658684][ T72] [ 1228.660844][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1228.660844][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.660844][ T72] ipv6_find_idev+0x102/0x170 [ 1228.660844][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.660844][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.660844][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.660844][ T72] netlink_unicast+0x449/0x710 [ 1228.660844][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.660844][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.660844][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.660844][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.660844][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.660844][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.660844][ T72] [ 1228.662544][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1228.662544][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.662544][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.662544][ T72] ipv6_find_idev+0x102/0x170 [ 1228.662544][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.662544][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.662544][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.662544][ T72] netlink_unicast+0x449/0x710 [ 1228.662544][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.662544][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.662544][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.662544][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.662544][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.662544][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.662544][ T72] [ 1228.664563][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1228.664886][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1228.664886][ T72] netdev_get_by_index+0x5e/0x80 [ 1228.664886][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1228.664886][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1228.664886][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1228.664886][ T72] ipv6_add_addr+0x411/0x2000 [ 1228.664886][ T72] inet6_addr_add+0x30e/0xa40 [ 1228.664886][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1228.664886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.664886][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.664886][ T72] netlink_unicast+0x449/0x710 [ 1228.664886][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.664886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.664886][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.664886][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.664886][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.664886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.664886][ T72] [ 1228.667077][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1228.667077][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1228.667077][ T72] ipv6_find_idev+0x102/0x170 [ 1228.667077][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.667077][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.667077][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.667077][ T72] netlink_unicast+0x449/0x710 [ 1228.667077][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.667077][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.667077][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.667077][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.667077][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.667077][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.667077][ T72] [ 1228.668790][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1228.668790][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1228.668790][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1228.668790][ T72] ipv6_find_idev+0x102/0x170 [ 1228.668790][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1228.668790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1228.668790][ T72] netlink_rcv_skb+0x130/0x360 [ 1228.668790][ T72] netlink_unicast+0x449/0x710 [ 1228.668790][ T72] netlink_sendmsg+0x723/0xbe0 [ 1228.668790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1228.668790][ T72] ___sys_sendmsg+0xee/0x170 [ 1228.668790][ T72] __sys_sendmsg+0xcd/0x170 [ 1228.668790][ T72] do_syscall_64+0xc6/0x1e0 [ 1228.668790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1228.668790][ T72] [ 1230.118938][ T42] INFO: task modprobe:1060 blocked for more than 983 seconds. [ 1230.119318][ T42] Not tainted 6.8.0-virtme #1 [ 1230.119443][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1230.119658][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 1230.119952][ T42] Call Trace: [ 1230.120052][ T42] [ 1230.120126][ T42] __schedule+0x705/0x1ac0 [ 1230.120270][ T42] ? __pfx___schedule+0x10/0x10 [ 1230.120401][ T42] ? schedule+0x1a5/0x210 [ 1230.120500][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1230.120633][ T42] ? mark_lock+0x38/0x3e0 [ 1230.120730][ T42] ? do_raw_spin_lock+0x131/0x270 [ 1230.120879][ T42] ? schedule+0x1a5/0x210 [ 1230.120980][ T42] schedule+0xdf/0x210 [ 1230.121081][ T42] schedule_preempt_disabled+0x15/0x30 [ 1230.121210][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 1230.121344][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 1230.121500][ T42] ? kasan_save_stack+0x34/0x50 [ 1230.121627][ T42] ? kasan_save_stack+0x24/0x50 [ 1230.121770][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1230.121908][ T42] ? lock_acquire+0x1c1/0x220 [ 1230.122032][ T42] ? register_pernet_subsys+0x1a/0x50 [ 1230.122167][ T42] down_write+0x1c9/0x200 [ 1230.122267][ T42] ? __pfx_down_write+0x10/0x10 [ 1230.122396][ T42] ? __pfx___lock_release+0x10/0x10 [ 1230.122527][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 1230.122722][ T42] register_pernet_subsys+0x1a/0x50 [ 1230.122863][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 1230.123043][ T42] do_one_initcall+0xc8/0x3f0 [ 1230.123172][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 1230.123301][ T42] ? __create_object+0x5e/0xb0 [ 1230.123432][ T42] ? kasan_unpoison+0x27/0x60 [ 1230.123569][ T42] do_init_module+0x233/0x740 [ 1230.123706][ T42] load_module+0x16b5/0x2350 [ 1230.123871][ T42] ? __pfx_load_module+0x10/0x10 [ 1230.124002][ T42] ? kernel_read_file+0x3d2/0x520 [ 1230.124136][ T42] ? kernel_read_file+0x300/0x520 [ 1230.124266][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 1230.124415][ T42] ? init_module_from_file+0xd2/0x130 [ 1230.124542][ T42] init_module_from_file+0xd2/0x130 [ 1230.124674][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 1230.124842][ T42] ? __lock_release+0x103/0x460 [ 1230.124968][ T42] ? idempotent_init_module+0x32a/0x620 [ 1230.125104][ T42] ? idempotent_init_module+0x32a/0x620 [ 1230.125243][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 1230.125371][ T42] idempotent_init_module+0x342/0x620 [ 1230.125499][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 1230.125676][ T42] __x64_sys_finit_module+0xbe/0x130 [ 1230.125816][ T42] do_syscall_64+0xc6/0x1e0 [ 1230.125945][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1230.126103][ T42] RIP: 0033:0x7f69f7397e5d [ 1230.126233][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 1230.126422][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 1230.126606][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 1230.126805][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 1230.126993][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 1230.127178][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 1230.127378][ T42] [ 1230.127473][ T42] [ 1230.127473][ T42] Showing all locks held in the system: [ 1230.127661][ T42] 1 lock held by khungtaskd/42: [ 1230.127807][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 1230.128036][ T42] 2 locks held by kworker/u20:1/60: [ 1230.128155][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1230.128406][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1230.128692][ T42] 3 locks held by kworker/u16:1/72: [ 1230.128822][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1230.129074][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1230.129295][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 1230.129521][ T42] 1 lock held by modprobe/1060: [ 1230.129642][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 1230.129898][ T42] [ 1230.129961][ T42] ============================================= [ 1230.129961][ T42] [ 1238.790976][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1238.791459][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1238.791459][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.791459][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.791459][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.791459][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.791459][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.791459][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.791459][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.791459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.791459][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.791459][ T72] netlink_unicast+0x449/0x710 [ 1238.791459][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.791459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.791459][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.791459][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.791459][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.791459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.791459][ T72] [ 1238.793466][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1238.793466][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.793466][ T72] ipv6_find_idev+0x102/0x170 [ 1238.793466][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.793466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.793466][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.793466][ T72] netlink_unicast+0x449/0x710 [ 1238.793466][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.793466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.793466][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.793466][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.793466][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.793466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.793466][ T72] [ 1238.794986][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1238.794986][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.794986][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.794986][ T72] ipv6_find_idev+0x102/0x170 [ 1238.794986][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.794986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.794986][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.794986][ T72] netlink_unicast+0x449/0x710 [ 1238.794986][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.794986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.794986][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.794986][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.794986][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.794986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.794986][ T72] [ 1238.796689][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1238.796988][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1238.796988][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.796988][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.796988][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.796988][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.796988][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.796988][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.796988][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.796988][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.796988][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.796988][ T72] netlink_unicast+0x449/0x710 [ 1238.796988][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.796988][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.796988][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.796988][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.796988][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.796988][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.796988][ T72] [ 1238.798954][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1238.798954][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.798954][ T72] ipv6_find_idev+0x102/0x170 [ 1238.798954][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.798954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.798954][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.798954][ T72] netlink_unicast+0x449/0x710 [ 1238.798954][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.798954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.798954][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.798954][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.798954][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.798954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.798954][ T72] [ 1238.800472][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1238.800472][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.800472][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.800472][ T72] ipv6_find_idev+0x102/0x170 [ 1238.800472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.800472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.800472][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.800472][ T72] netlink_unicast+0x449/0x710 [ 1238.800472][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.800472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.800472][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.800472][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.800472][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.800472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.800472][ T72] [ 1238.802134][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1238.802394][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1238.802394][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.802394][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.802394][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.802394][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.802394][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.802394][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.802394][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.802394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.802394][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.802394][ T72] netlink_unicast+0x449/0x710 [ 1238.802394][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.802394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.802394][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.802394][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.802394][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.802394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.802394][ T72] [ 1238.804356][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1238.804356][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.804356][ T72] ipv6_find_idev+0x102/0x170 [ 1238.804356][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.804356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.804356][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.804356][ T72] netlink_unicast+0x449/0x710 [ 1238.804356][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.804356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.804356][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.804356][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.804356][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.804356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.804356][ T72] [ 1238.805879][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1238.805879][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.805879][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.805879][ T72] ipv6_find_idev+0x102/0x170 [ 1238.805879][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.805879][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.805879][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.805879][ T72] netlink_unicast+0x449/0x710 [ 1238.805879][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.805879][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.805879][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.805879][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.805879][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.805879][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.805879][ T72] [ 1238.807966][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1238.808224][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1238.808224][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.808224][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.808224][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.808224][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.808224][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.808224][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.808224][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.808224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.808224][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.808224][ T72] netlink_unicast+0x449/0x710 [ 1238.808224][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.808224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.808224][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.808224][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.808224][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.808224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.808224][ T72] [ 1238.810552][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1238.810552][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.810552][ T72] ipv6_find_idev+0x102/0x170 [ 1238.810552][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.810552][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.810552][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.810552][ T72] netlink_unicast+0x449/0x710 [ 1238.810552][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.810552][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.810552][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.810552][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.810552][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.810552][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.810552][ T72] [ 1238.812064][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1238.812064][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.812064][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.812064][ T72] ipv6_find_idev+0x102/0x170 [ 1238.812064][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.812064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.812064][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.812064][ T72] netlink_unicast+0x449/0x710 [ 1238.812064][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.812064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.812064][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.812064][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.812064][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.812064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.812064][ T72] [ 1238.813776][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1238.814036][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1238.814036][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.814036][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.814036][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.814036][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.814036][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.814036][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.814036][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.814036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.814036][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.814036][ T72] netlink_unicast+0x449/0x710 [ 1238.814036][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.814036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.814036][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.814036][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.814036][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.814036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.814036][ T72] [ 1238.816013][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1238.816013][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.816013][ T72] ipv6_find_idev+0x102/0x170 [ 1238.816013][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.816013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.816013][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.816013][ T72] netlink_unicast+0x449/0x710 [ 1238.816013][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.816013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.816013][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.816013][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.816013][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.816013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.816013][ T72] [ 1238.817526][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1238.817526][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.817526][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.817526][ T72] ipv6_find_idev+0x102/0x170 [ 1238.817526][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.817526][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.817526][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.817526][ T72] netlink_unicast+0x449/0x710 [ 1238.817526][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.817526][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.817526][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.817526][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.817526][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.817526][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.817526][ T72] [ 1238.819223][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1238.819483][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1238.819483][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.819483][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.819483][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.819483][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.819483][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.819483][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.819483][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.819483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.819483][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.819483][ T72] netlink_unicast+0x449/0x710 [ 1238.819483][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.819483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.819483][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.819483][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.819483][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.819483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.819483][ T72] [ 1238.821570][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1238.821570][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.821570][ T72] ipv6_find_idev+0x102/0x170 [ 1238.821570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.821570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.821570][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.821570][ T72] netlink_unicast+0x449/0x710 [ 1238.821570][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.821570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.821570][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.821570][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.821570][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.821570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.821570][ T72] [ 1238.823328][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1238.823328][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.823328][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.823328][ T72] ipv6_find_idev+0x102/0x170 [ 1238.823328][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.823328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.823328][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.823328][ T72] netlink_unicast+0x449/0x710 [ 1238.823328][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.823328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.823328][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.823328][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.823328][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.823328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.823328][ T72] [ 1238.825223][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1238.825487][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1238.825487][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.825487][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.825487][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.825487][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.825487][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.825487][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.825487][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.825487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.825487][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.825487][ T72] netlink_unicast+0x449/0x710 [ 1238.825487][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.825487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.825487][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.825487][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.825487][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.825487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.825487][ T72] [ 1238.827676][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1238.827676][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.827676][ T72] ipv6_find_idev+0x102/0x170 [ 1238.827676][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.827676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.827676][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.827676][ T72] netlink_unicast+0x449/0x710 [ 1238.827676][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.827676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.827676][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.827676][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.827676][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.827676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.827676][ T72] [ 1238.829367][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1238.829367][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.829367][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.829367][ T72] ipv6_find_idev+0x102/0x170 [ 1238.829367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.829367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.829367][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.829367][ T72] netlink_unicast+0x449/0x710 [ 1238.829367][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.829367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.829367][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.829367][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.829367][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.829367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.829367][ T72] [ 1238.831772][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1238.832083][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1238.832083][ T72] netdev_get_by_index+0x5e/0x80 [ 1238.832083][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1238.832083][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1238.832083][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1238.832083][ T72] ipv6_add_addr+0x411/0x2000 [ 1238.832083][ T72] inet6_addr_add+0x30e/0xa40 [ 1238.832083][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1238.832083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.832083][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.832083][ T72] netlink_unicast+0x449/0x710 [ 1238.832083][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.832083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.832083][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.832083][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.832083][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.832083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.832083][ T72] [ 1238.834654][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1238.834654][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1238.834654][ T72] ipv6_find_idev+0x102/0x170 [ 1238.834654][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.834654][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.834654][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.834654][ T72] netlink_unicast+0x449/0x710 [ 1238.834654][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.834654][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.834654][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.834654][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.834654][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.834654][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.834654][ T72] [ 1238.836347][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1238.836347][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1238.836347][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1238.836347][ T72] ipv6_find_idev+0x102/0x170 [ 1238.836347][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1238.836347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1238.836347][ T72] netlink_rcv_skb+0x130/0x360 [ 1238.836347][ T72] netlink_unicast+0x449/0x710 [ 1238.836347][ T72] netlink_sendmsg+0x723/0xbe0 [ 1238.836347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1238.836347][ T72] ___sys_sendmsg+0xee/0x170 [ 1238.836347][ T72] __sys_sendmsg+0xcd/0x170 [ 1238.836347][ T72] do_syscall_64+0xc6/0x1e0 [ 1238.836347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1238.836347][ T72] [ 1249.086897][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1249.087408][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1249.087408][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.087408][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.087408][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.087408][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.087408][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.087408][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.087408][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.087408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.087408][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.087408][ T72] netlink_unicast+0x449/0x710 [ 1249.087408][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.087408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.087408][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.087408][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.087408][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.087408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.087408][ T72] [ 1249.089425][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1249.089425][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.089425][ T72] ipv6_find_idev+0x102/0x170 [ 1249.089425][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.089425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.089425][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.089425][ T72] netlink_unicast+0x449/0x710 [ 1249.089425][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.089425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.089425][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.089425][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.089425][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.089425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.089425][ T72] [ 1249.090967][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1249.090967][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.090967][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.090967][ T72] ipv6_find_idev+0x102/0x170 [ 1249.090967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.090967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.090967][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.090967][ T72] netlink_unicast+0x449/0x710 [ 1249.090967][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.090967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.090967][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.090967][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.090967][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.090967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.090967][ T72] [ 1249.092676][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1249.092966][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1249.092966][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.092966][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.092966][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.092966][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.092966][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.092966][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.092966][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.092966][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.092966][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.092966][ T72] netlink_unicast+0x449/0x710 [ 1249.092966][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.092966][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.092966][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.092966][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.092966][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.092966][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.092966][ T72] [ 1249.094968][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1249.094968][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.094968][ T72] ipv6_find_idev+0x102/0x170 [ 1249.094968][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.094968][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.094968][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.094968][ T72] netlink_unicast+0x449/0x710 [ 1249.094968][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.094968][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.094968][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.094968][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.094968][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.094968][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.094968][ T72] [ 1249.096502][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1249.096502][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.096502][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.096502][ T72] ipv6_find_idev+0x102/0x170 [ 1249.096502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.096502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.096502][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.096502][ T72] netlink_unicast+0x449/0x710 [ 1249.096502][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.096502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.096502][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.096502][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.096502][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.096502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.096502][ T72] [ 1249.098203][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1249.098473][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1249.098473][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.098473][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.098473][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.098473][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.098473][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.098473][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.098473][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.098473][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.098473][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.098473][ T72] netlink_unicast+0x449/0x710 [ 1249.098473][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.098473][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.098473][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.098473][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.098473][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.098473][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.098473][ T72] [ 1249.100469][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1249.100469][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.100469][ T72] ipv6_find_idev+0x102/0x170 [ 1249.100469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.100469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.100469][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.100469][ T72] netlink_unicast+0x449/0x710 [ 1249.100469][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.100469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.100469][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.100469][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.100469][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.100469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.100469][ T72] [ 1249.102018][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1249.102018][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.102018][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.102018][ T72] ipv6_find_idev+0x102/0x170 [ 1249.102018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.102018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.102018][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.102018][ T72] netlink_unicast+0x449/0x710 [ 1249.102018][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.102018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.102018][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.102018][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.102018][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.102018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.102018][ T72] [ 1249.104112][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1249.104711][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1249.104711][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.104711][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.104711][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.104711][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.104711][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.104711][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.104711][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.104711][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.104711][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.104711][ T72] netlink_unicast+0x449/0x710 [ 1249.104711][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.104711][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.104711][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.104711][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.104711][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.104711][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.104711][ T72] [ 1249.106720][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1249.106720][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.106720][ T72] ipv6_find_idev+0x102/0x170 [ 1249.106720][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.106720][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.106720][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.106720][ T72] netlink_unicast+0x449/0x710 [ 1249.106720][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.106720][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.106720][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.106720][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.106720][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.106720][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.106720][ T72] [ 1249.108244][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1249.108244][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.108244][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.108244][ T72] ipv6_find_idev+0x102/0x170 [ 1249.108244][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.108244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.108244][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.108244][ T72] netlink_unicast+0x449/0x710 [ 1249.108244][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.108244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.108244][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.108244][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.108244][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.108244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.108244][ T72] [ 1249.109927][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1249.110194][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1249.110194][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.110194][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.110194][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.110194][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.110194][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.110194][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.110194][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.110194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.110194][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.110194][ T72] netlink_unicast+0x449/0x710 [ 1249.110194][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.110194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.110194][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.110194][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.110194][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.110194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.110194][ T72] [ 1249.112182][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1249.112182][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.112182][ T72] ipv6_find_idev+0x102/0x170 [ 1249.112182][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.112182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.112182][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.112182][ T72] netlink_unicast+0x449/0x710 [ 1249.112182][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.112182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.112182][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.112182][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.112182][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.112182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.112182][ T72] [ 1249.113715][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1249.113715][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.113715][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.113715][ T72] ipv6_find_idev+0x102/0x170 [ 1249.113715][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.113715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.113715][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.113715][ T72] netlink_unicast+0x449/0x710 [ 1249.113715][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.113715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.113715][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.113715][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.113715][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.113715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.113715][ T72] [ 1249.115440][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1249.115751][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1249.115751][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.115751][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.115751][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.115751][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.115751][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.115751][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.115751][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.115751][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.115751][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.115751][ T72] netlink_unicast+0x449/0x710 [ 1249.115751][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.115751][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.115751][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.115751][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.115751][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.115751][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.115751][ T72] [ 1249.117746][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1249.117746][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.117746][ T72] ipv6_find_idev+0x102/0x170 [ 1249.117746][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.117746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.117746][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.117746][ T72] netlink_unicast+0x449/0x710 [ 1249.117746][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.117746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.117746][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.117746][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.117746][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.117746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.117746][ T72] [ 1249.119276][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1249.119276][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.119276][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.119276][ T72] ipv6_find_idev+0x102/0x170 [ 1249.119276][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.119276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.119276][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.119276][ T72] netlink_unicast+0x449/0x710 [ 1249.119276][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.119276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.119276][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.119276][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.119276][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.119276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.119276][ T72] [ 1249.121180][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1249.121487][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1249.121487][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.121487][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.121487][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.121487][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.121487][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.121487][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.121487][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.121487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.121487][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.121487][ T72] netlink_unicast+0x449/0x710 [ 1249.121487][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.121487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.121487][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.121487][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.121487][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.121487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.121487][ T72] [ 1249.123708][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1249.123708][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.123708][ T72] ipv6_find_idev+0x102/0x170 [ 1249.123708][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.123708][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.123708][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.123708][ T72] netlink_unicast+0x449/0x710 [ 1249.123708][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.123708][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.123708][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.123708][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.123708][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.123708][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.123708][ T72] [ 1249.125422][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1249.125422][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.125422][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.125422][ T72] ipv6_find_idev+0x102/0x170 [ 1249.125422][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.125422][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.125422][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.125422][ T72] netlink_unicast+0x449/0x710 [ 1249.125422][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.125422][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.125422][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.125422][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.125422][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.125422][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.125422][ T72] [ 1249.127407][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1249.127719][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1249.127719][ T72] netdev_get_by_index+0x5e/0x80 [ 1249.127719][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1249.127719][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1249.127719][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1249.127719][ T72] ipv6_add_addr+0x411/0x2000 [ 1249.127719][ T72] inet6_addr_add+0x30e/0xa40 [ 1249.127719][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1249.127719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.127719][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.127719][ T72] netlink_unicast+0x449/0x710 [ 1249.127719][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.127719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.127719][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.127719][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.127719][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.127719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.127719][ T72] [ 1249.129887][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1249.129887][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1249.129887][ T72] ipv6_find_idev+0x102/0x170 [ 1249.129887][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.129887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.129887][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.129887][ T72] netlink_unicast+0x449/0x710 [ 1249.129887][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.129887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.129887][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.129887][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.129887][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.129887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.129887][ T72] [ 1249.131527][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1249.131527][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1249.131527][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1249.131527][ T72] ipv6_find_idev+0x102/0x170 [ 1249.131527][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1249.131527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1249.131527][ T72] netlink_rcv_skb+0x130/0x360 [ 1249.131527][ T72] netlink_unicast+0x449/0x710 [ 1249.131527][ T72] netlink_sendmsg+0x723/0xbe0 [ 1249.131527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1249.131527][ T72] ___sys_sendmsg+0xee/0x170 [ 1249.131527][ T72] __sys_sendmsg+0xcd/0x170 [ 1249.131527][ T72] do_syscall_64+0xc6/0x1e0 [ 1249.131527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1249.131527][ T72] [ 1259.134840][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1259.135444][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1259.135444][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.135444][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.135444][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.135444][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.135444][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.135444][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.135444][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.135444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.135444][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.135444][ T72] netlink_unicast+0x449/0x710 [ 1259.135444][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.135444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.135444][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.135444][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.135444][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.135444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.135444][ T72] [ 1259.138370][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1259.138370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.138370][ T72] ipv6_find_idev+0x102/0x170 [ 1259.138370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.138370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.138370][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.138370][ T72] netlink_unicast+0x449/0x710 [ 1259.138370][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.138370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.138370][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.138370][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.138370][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.138370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.138370][ T72] [ 1259.140769][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1259.140769][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.140769][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.140769][ T72] ipv6_find_idev+0x102/0x170 [ 1259.140769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.140769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.140769][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.140769][ T72] netlink_unicast+0x449/0x710 [ 1259.140769][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.140769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.140769][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.140769][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.140769][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.140769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.140769][ T72] [ 1259.143394][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1259.143815][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1259.143815][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.143815][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.143815][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.143815][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.143815][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.143815][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.143815][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.143815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.143815][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.143815][ T72] netlink_unicast+0x449/0x710 [ 1259.143815][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.143815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.143815][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.143815][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.143815][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.143815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.143815][ T72] [ 1259.146913][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1259.146913][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.146913][ T72] ipv6_find_idev+0x102/0x170 [ 1259.146913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.146913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.146913][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.146913][ T72] netlink_unicast+0x449/0x710 [ 1259.146913][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.146913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.146913][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.146913][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.146913][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.146913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.146913][ T72] [ 1259.149317][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1259.149317][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.149317][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.149317][ T72] ipv6_find_idev+0x102/0x170 [ 1259.149317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.149317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.149317][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.149317][ T72] netlink_unicast+0x449/0x710 [ 1259.149317][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.149317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.149317][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.149317][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.149317][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.149317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.149317][ T72] [ 1259.151078][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1259.151350][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1259.151350][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.151350][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.151350][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.151350][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.151350][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.151350][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.151350][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.151350][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.151350][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.151350][ T72] netlink_unicast+0x449/0x710 [ 1259.151350][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.151350][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.151350][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.151350][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.151350][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.151350][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.151350][ T72] [ 1259.153641][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1259.153641][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.153641][ T72] ipv6_find_idev+0x102/0x170 [ 1259.153641][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.153641][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.153641][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.153641][ T72] netlink_unicast+0x449/0x710 [ 1259.153641][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.153641][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.153641][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.153641][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.153641][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.153641][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.153641][ T72] [ 1259.155293][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1259.155293][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.155293][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.155293][ T72] ipv6_find_idev+0x102/0x170 [ 1259.155293][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.155293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.155293][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.155293][ T72] netlink_unicast+0x449/0x710 [ 1259.155293][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.155293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.155293][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.155293][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.155293][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.155293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.155293][ T72] [ 1259.157150][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1259.157573][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1259.157573][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.157573][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.157573][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.157573][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.157573][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.157573][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.157573][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.157573][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.157573][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.157573][ T72] netlink_unicast+0x449/0x710 [ 1259.157573][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.157573][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.157573][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.157573][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.157573][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.157573][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.157573][ T72] [ 1259.159693][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1259.159693][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.159693][ T72] ipv6_find_idev+0x102/0x170 [ 1259.159693][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.159693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.159693][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.159693][ T72] netlink_unicast+0x449/0x710 [ 1259.159693][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.159693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.159693][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.159693][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.159693][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.159693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.159693][ T72] [ 1259.161284][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1259.161284][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.161284][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.161284][ T72] ipv6_find_idev+0x102/0x170 [ 1259.161284][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.161284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.161284][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.161284][ T72] netlink_unicast+0x449/0x710 [ 1259.161284][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.161284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.161284][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.161284][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.161284][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.161284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.161284][ T72] [ 1259.163526][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1259.164196][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1259.164196][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.164196][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.164196][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.164196][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.164196][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.164196][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.164196][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.164196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.164196][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.164196][ T72] netlink_unicast+0x449/0x710 [ 1259.164196][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.164196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.164196][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.164196][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.164196][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.164196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.164196][ T72] [ 1259.166220][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1259.166220][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.166220][ T72] ipv6_find_idev+0x102/0x170 [ 1259.166220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.166220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.166220][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.166220][ T72] netlink_unicast+0x449/0x710 [ 1259.166220][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.166220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.166220][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.166220][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.166220][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.166220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.166220][ T72] [ 1259.167740][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1259.167740][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.167740][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.167740][ T72] ipv6_find_idev+0x102/0x170 [ 1259.167740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.167740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.167740][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.167740][ T72] netlink_unicast+0x449/0x710 [ 1259.167740][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.167740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.167740][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.167740][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.167740][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.167740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.167740][ T72] [ 1259.169429][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1259.169700][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1259.169700][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.169700][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.169700][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.169700][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.169700][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.169700][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.169700][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.169700][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.169700][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.169700][ T72] netlink_unicast+0x449/0x710 [ 1259.169700][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.169700][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.169700][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.169700][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.169700][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.169700][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.169700][ T72] [ 1259.171730][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1259.171730][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.171730][ T72] ipv6_find_idev+0x102/0x170 [ 1259.171730][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.171730][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.171730][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.171730][ T72] netlink_unicast+0x449/0x710 [ 1259.171730][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.171730][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.171730][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.171730][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.171730][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.171730][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.171730][ T72] [ 1259.173451][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1259.173451][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.173451][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.173451][ T72] ipv6_find_idev+0x102/0x170 [ 1259.173451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.173451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.173451][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.173451][ T72] netlink_unicast+0x449/0x710 [ 1259.173451][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.173451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.173451][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.173451][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.173451][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.173451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.173451][ T72] [ 1259.175547][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1259.175876][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1259.175876][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.175876][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.175876][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.175876][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.175876][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.175876][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.175876][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.175876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.175876][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.175876][ T72] netlink_unicast+0x449/0x710 [ 1259.175876][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.175876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.175876][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.175876][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.175876][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.175876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.175876][ T72] [ 1259.178035][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1259.178035][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.178035][ T72] ipv6_find_idev+0x102/0x170 [ 1259.178035][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.178035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.178035][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.178035][ T72] netlink_unicast+0x449/0x710 [ 1259.178035][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.178035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.178035][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.178035][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.178035][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.178035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.178035][ T72] [ 1259.179783][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1259.179783][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.179783][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.179783][ T72] ipv6_find_idev+0x102/0x170 [ 1259.179783][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.179783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.179783][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.179783][ T72] netlink_unicast+0x449/0x710 [ 1259.179783][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.179783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.179783][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.179783][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.179783][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.179783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.179783][ T72] [ 1259.181937][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1259.182203][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1259.182203][ T72] netdev_get_by_index+0x5e/0x80 [ 1259.182203][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1259.182203][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1259.182203][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1259.182203][ T72] ipv6_add_addr+0x411/0x2000 [ 1259.182203][ T72] inet6_addr_add+0x30e/0xa40 [ 1259.182203][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1259.182203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.182203][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.182203][ T72] netlink_unicast+0x449/0x710 [ 1259.182203][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.182203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.182203][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.182203][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.182203][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.182203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.182203][ T72] [ 1259.184371][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1259.184371][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1259.184371][ T72] ipv6_find_idev+0x102/0x170 [ 1259.184371][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.184371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.184371][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.184371][ T72] netlink_unicast+0x449/0x710 [ 1259.184371][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.184371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.184371][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.184371][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.184371][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.184371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.184371][ T72] [ 1259.186170][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1259.186170][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1259.186170][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1259.186170][ T72] ipv6_find_idev+0x102/0x170 [ 1259.186170][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1259.186170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1259.186170][ T72] netlink_rcv_skb+0x130/0x360 [ 1259.186170][ T72] netlink_unicast+0x449/0x710 [ 1259.186170][ T72] netlink_sendmsg+0x723/0xbe0 [ 1259.186170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1259.186170][ T72] ___sys_sendmsg+0xee/0x170 [ 1259.186170][ T72] __sys_sendmsg+0xcd/0x170 [ 1259.186170][ T72] do_syscall_64+0xc6/0x1e0 [ 1259.186170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1259.186170][ T72] [ 1269.350876][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1269.351393][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1269.351393][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.351393][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.351393][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.351393][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.351393][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.351393][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.351393][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.351393][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.351393][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.351393][ T72] netlink_unicast+0x449/0x710 [ 1269.351393][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.351393][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.351393][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.351393][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.351393][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.351393][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.351393][ T72] [ 1269.353407][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1269.353407][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.353407][ T72] ipv6_find_idev+0x102/0x170 [ 1269.353407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.353407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.353407][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.353407][ T72] netlink_unicast+0x449/0x710 [ 1269.353407][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.353407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.353407][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.353407][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.353407][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.353407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.353407][ T72] [ 1269.354907][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1269.354907][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.354907][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.354907][ T72] ipv6_find_idev+0x102/0x170 [ 1269.354907][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.354907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.354907][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.354907][ T72] netlink_unicast+0x449/0x710 [ 1269.354907][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.354907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.354907][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.354907][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.354907][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.354907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.354907][ T72] [ 1269.356624][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1269.356934][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1269.356934][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.356934][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.356934][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.356934][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.356934][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.356934][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.356934][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.356934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.356934][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.356934][ T72] netlink_unicast+0x449/0x710 [ 1269.356934][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.356934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.356934][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.356934][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.356934][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.356934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.356934][ T72] [ 1269.358936][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1269.358936][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.358936][ T72] ipv6_find_idev+0x102/0x170 [ 1269.358936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.358936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.358936][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.358936][ T72] netlink_unicast+0x449/0x710 [ 1269.358936][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.358936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.358936][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.358936][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.358936][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.358936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.358936][ T72] [ 1269.360471][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1269.360471][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.360471][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.360471][ T72] ipv6_find_idev+0x102/0x170 [ 1269.360471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.360471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.360471][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.360471][ T72] netlink_unicast+0x449/0x710 [ 1269.360471][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.360471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.360471][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.360471][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.360471][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.360471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.360471][ T72] [ 1269.362166][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1269.362429][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1269.362429][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.362429][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.362429][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.362429][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.362429][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.362429][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.362429][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.362429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.362429][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.362429][ T72] netlink_unicast+0x449/0x710 [ 1269.362429][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.362429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.362429][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.362429][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.362429][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.362429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.362429][ T72] [ 1269.364394][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1269.364394][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.364394][ T72] ipv6_find_idev+0x102/0x170 [ 1269.364394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.364394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.364394][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.364394][ T72] netlink_unicast+0x449/0x710 [ 1269.364394][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.364394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.364394][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.364394][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.364394][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.364394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.364394][ T72] [ 1269.365941][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1269.365941][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.365941][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.365941][ T72] ipv6_find_idev+0x102/0x170 [ 1269.365941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.365941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.365941][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.365941][ T72] netlink_unicast+0x449/0x710 [ 1269.365941][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.365941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.365941][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.365941][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.365941][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.365941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.365941][ T72] [ 1269.367624][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1269.368313][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1269.368313][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.368313][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.368313][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.368313][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.368313][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.368313][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.368313][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.368313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.368313][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.368313][ T72] netlink_unicast+0x449/0x710 [ 1269.368313][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.368313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.368313][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.368313][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.368313][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.368313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.368313][ T72] [ 1269.370291][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1269.370291][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.370291][ T72] ipv6_find_idev+0x102/0x170 [ 1269.370291][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.370291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.370291][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.370291][ T72] netlink_unicast+0x449/0x710 [ 1269.370291][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.370291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.370291][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.370291][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.370291][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.370291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.370291][ T72] [ 1269.371818][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1269.371818][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.371818][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.371818][ T72] ipv6_find_idev+0x102/0x170 [ 1269.371818][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.371818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.371818][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.371818][ T72] netlink_unicast+0x449/0x710 [ 1269.371818][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.371818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.371818][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.371818][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.371818][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.371818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.371818][ T72] [ 1269.373512][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1269.373775][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1269.373775][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.373775][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.373775][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.373775][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.373775][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.373775][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.373775][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.373775][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.373775][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.373775][ T72] netlink_unicast+0x449/0x710 [ 1269.373775][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.373775][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.373775][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.373775][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.373775][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.373775][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.373775][ T72] [ 1269.375749][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1269.375749][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.375749][ T72] ipv6_find_idev+0x102/0x170 [ 1269.375749][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.375749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.375749][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.375749][ T72] netlink_unicast+0x449/0x710 [ 1269.375749][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.375749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.375749][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.375749][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.375749][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.375749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.375749][ T72] [ 1269.377234][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1269.377234][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.377234][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.377234][ T72] ipv6_find_idev+0x102/0x170 [ 1269.377234][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.377234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.377234][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.377234][ T72] netlink_unicast+0x449/0x710 [ 1269.377234][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.377234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.377234][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.377234][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.377234][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.377234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.377234][ T72] [ 1269.378926][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1269.379194][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1269.379194][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.379194][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.379194][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.379194][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.379194][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.379194][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.379194][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.379194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.379194][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.379194][ T72] netlink_unicast+0x449/0x710 [ 1269.379194][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.379194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.379194][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.379194][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.379194][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.379194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.379194][ T72] [ 1269.381231][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1269.381231][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.381231][ T72] ipv6_find_idev+0x102/0x170 [ 1269.381231][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.381231][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.381231][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.381231][ T72] netlink_unicast+0x449/0x710 [ 1269.381231][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.381231][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.381231][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.381231][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.381231][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.381231][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.381231][ T72] [ 1269.382940][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1269.382940][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.382940][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.382940][ T72] ipv6_find_idev+0x102/0x170 [ 1269.382940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.382940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.382940][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.382940][ T72] netlink_unicast+0x449/0x710 [ 1269.382940][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.382940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.382940][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.382940][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.382940][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.382940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.382940][ T72] [ 1269.384927][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1269.385202][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1269.385202][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.385202][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.385202][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.385202][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.385202][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.385202][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.385202][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.385202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.385202][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.385202][ T72] netlink_unicast+0x449/0x710 [ 1269.385202][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.385202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.385202][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.385202][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.385202][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.385202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.385202][ T72] [ 1269.387274][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1269.387274][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.387274][ T72] ipv6_find_idev+0x102/0x170 [ 1269.387274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.387274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.387274][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.387274][ T72] netlink_unicast+0x449/0x710 [ 1269.387274][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.387274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.387274][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.387274][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.387274][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.387274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.387274][ T72] [ 1269.389017][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1269.389017][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.389017][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.389017][ T72] ipv6_find_idev+0x102/0x170 [ 1269.389017][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.389017][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.389017][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.389017][ T72] netlink_unicast+0x449/0x710 [ 1269.389017][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.389017][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.389017][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.389017][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.389017][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.389017][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.389017][ T72] [ 1269.390984][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1269.391254][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1269.391254][ T72] netdev_get_by_index+0x5e/0x80 [ 1269.391254][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1269.391254][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1269.391254][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1269.391254][ T72] ipv6_add_addr+0x411/0x2000 [ 1269.391254][ T72] inet6_addr_add+0x30e/0xa40 [ 1269.391254][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1269.391254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.391254][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.391254][ T72] netlink_unicast+0x449/0x710 [ 1269.391254][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.391254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.391254][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.391254][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.391254][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.391254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.391254][ T72] [ 1269.393399][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1269.393399][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1269.393399][ T72] ipv6_find_idev+0x102/0x170 [ 1269.393399][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.393399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.393399][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.393399][ T72] netlink_unicast+0x449/0x710 [ 1269.393399][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.393399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.393399][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.393399][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.393399][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.393399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.393399][ T72] [ 1269.395146][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1269.395146][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1269.395146][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1269.395146][ T72] ipv6_find_idev+0x102/0x170 [ 1269.395146][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1269.395146][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1269.395146][ T72] netlink_rcv_skb+0x130/0x360 [ 1269.395146][ T72] netlink_unicast+0x449/0x710 [ 1269.395146][ T72] netlink_sendmsg+0x723/0xbe0 [ 1269.395146][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1269.395146][ T72] ___sys_sendmsg+0xee/0x170 [ 1269.395146][ T72] __sys_sendmsg+0xcd/0x170 [ 1269.395146][ T72] do_syscall_64+0xc6/0x1e0 [ 1269.395146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1269.395146][ T72] [ 1279.638931][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1279.639610][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1279.639610][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.639610][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.639610][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.639610][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.639610][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.639610][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.639610][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.639610][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.639610][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.639610][ T72] netlink_unicast+0x449/0x710 [ 1279.639610][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.639610][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.639610][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.639610][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.639610][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.639610][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.639610][ T72] [ 1279.643055][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1279.643055][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.643055][ T72] ipv6_find_idev+0x102/0x170 [ 1279.643055][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.643055][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.643055][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.643055][ T72] netlink_unicast+0x449/0x710 [ 1279.643055][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.643055][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.643055][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.643055][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.643055][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.643055][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.643055][ T72] [ 1279.645917][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1279.645917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.645917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.645917][ T72] ipv6_find_idev+0x102/0x170 [ 1279.645917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.645917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.645917][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.645917][ T72] netlink_unicast+0x449/0x710 [ 1279.645917][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.645917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.645917][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.645917][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.645917][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.645917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.645917][ T72] [ 1279.649051][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1279.649542][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1279.649542][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.649542][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.649542][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.649542][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.649542][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.649542][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.649542][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.649542][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.649542][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.649542][ T72] netlink_unicast+0x449/0x710 [ 1279.649542][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.649542][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.649542][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.649542][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.649542][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.649542][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.649542][ T72] [ 1279.652951][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1279.652951][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.652951][ T72] ipv6_find_idev+0x102/0x170 [ 1279.652951][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.652951][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.652951][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.652951][ T72] netlink_unicast+0x449/0x710 [ 1279.652951][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.652951][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.652951][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.652951][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.652951][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.652951][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.652951][ T72] [ 1279.655726][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1279.655726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.655726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.655726][ T72] ipv6_find_idev+0x102/0x170 [ 1279.655726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.655726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.655726][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.655726][ T72] netlink_unicast+0x449/0x710 [ 1279.655726][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.655726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.655726][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.655726][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.655726][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.655726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.655726][ T72] [ 1279.658992][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1279.659457][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1279.659457][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.659457][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.659457][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.659457][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.659457][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.659457][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.659457][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.659457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.659457][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.659457][ T72] netlink_unicast+0x449/0x710 [ 1279.659457][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.659457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.659457][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.659457][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.659457][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.659457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.659457][ T72] [ 1279.662947][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1279.662947][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.662947][ T72] ipv6_find_idev+0x102/0x170 [ 1279.662947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.662947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.662947][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.662947][ T72] netlink_unicast+0x449/0x710 [ 1279.662947][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.662947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.662947][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.662947][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.662947][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.662947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.662947][ T72] [ 1279.665525][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1279.665525][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.665525][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.665525][ T72] ipv6_find_idev+0x102/0x170 [ 1279.665525][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.665525][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.665525][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.665525][ T72] netlink_unicast+0x449/0x710 [ 1279.665525][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.665525][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.665525][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.665525][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.665525][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.665525][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.665525][ T72] [ 1279.668286][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1279.668778][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1279.668778][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.668778][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.668778][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.668778][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.668778][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.668778][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.668778][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.668778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.668778][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.668778][ T72] netlink_unicast+0x449/0x710 [ 1279.668778][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.668778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.668778][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.668778][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.668778][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.668778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.668778][ T72] [ 1279.672105][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1279.672105][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.672105][ T72] ipv6_find_idev+0x102/0x170 [ 1279.672105][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.672105][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.672105][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.672105][ T72] netlink_unicast+0x449/0x710 [ 1279.672105][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.672105][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.672105][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.672105][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.672105][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.672105][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.672105][ T72] [ 1279.674678][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1279.674678][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.674678][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.674678][ T72] ipv6_find_idev+0x102/0x170 [ 1279.674678][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.674678][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.674678][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.674678][ T72] netlink_unicast+0x449/0x710 [ 1279.674678][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.674678][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.674678][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.674678][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.674678][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.674678][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.674678][ T72] [ 1279.678025][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1279.678519][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1279.678519][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.678519][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.678519][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.678519][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.678519][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.678519][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.678519][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.678519][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.678519][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.678519][ T72] netlink_unicast+0x449/0x710 [ 1279.678519][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.678519][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.678519][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.678519][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.678519][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.678519][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.678519][ T72] [ 1279.681702][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1279.681702][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.681702][ T72] ipv6_find_idev+0x102/0x170 [ 1279.681702][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.681702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.681702][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.681702][ T72] netlink_unicast+0x449/0x710 [ 1279.681702][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.681702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.681702][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.681702][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.681702][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.681702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.681702][ T72] [ 1279.684194][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1279.684194][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.684194][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.684194][ T72] ipv6_find_idev+0x102/0x170 [ 1279.684194][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.684194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.684194][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.684194][ T72] netlink_unicast+0x449/0x710 [ 1279.684194][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.684194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.684194][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.684194][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.684194][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.684194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.684194][ T72] [ 1279.687067][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1279.687474][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1279.687474][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.687474][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.687474][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.687474][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.687474][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.687474][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.687474][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.687474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.687474][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.687474][ T72] netlink_unicast+0x449/0x710 [ 1279.687474][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.687474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.687474][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.687474][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.687474][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.687474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.687474][ T72] [ 1279.690797][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1279.690797][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.690797][ T72] ipv6_find_idev+0x102/0x170 [ 1279.690797][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.690797][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.690797][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.690797][ T72] netlink_unicast+0x449/0x710 [ 1279.690797][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.690797][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.690797][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.690797][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.690797][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.690797][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.690797][ T72] [ 1279.693962][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1279.693962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.693962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.693962][ T72] ipv6_find_idev+0x102/0x170 [ 1279.693962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.693962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.693962][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.693962][ T72] netlink_unicast+0x449/0x710 [ 1279.693962][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.693962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.693962][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.693962][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.693962][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.693962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.693962][ T72] [ 1279.697243][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1279.697694][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1279.697694][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.697694][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.697694][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.697694][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.697694][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.697694][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.697694][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.697694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.697694][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.697694][ T72] netlink_unicast+0x449/0x710 [ 1279.697694][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.697694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.697694][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.697694][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.697694][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.697694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.697694][ T72] [ 1279.701223][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1279.701223][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.701223][ T72] ipv6_find_idev+0x102/0x170 [ 1279.701223][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.701223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.701223][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.701223][ T72] netlink_unicast+0x449/0x710 [ 1279.701223][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.701223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.701223][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.701223][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.701223][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.701223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.701223][ T72] [ 1279.704129][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1279.704129][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.704129][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.704129][ T72] ipv6_find_idev+0x102/0x170 [ 1279.704129][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.704129][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.704129][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.704129][ T72] netlink_unicast+0x449/0x710 [ 1279.704129][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.704129][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.704129][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.704129][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.704129][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.704129][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.704129][ T72] [ 1279.707330][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1279.707769][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1279.707769][ T72] netdev_get_by_index+0x5e/0x80 [ 1279.707769][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1279.707769][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1279.707769][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1279.707769][ T72] ipv6_add_addr+0x411/0x2000 [ 1279.707769][ T72] inet6_addr_add+0x30e/0xa40 [ 1279.707769][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1279.707769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.707769][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.707769][ T72] netlink_unicast+0x449/0x710 [ 1279.707769][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.707769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.707769][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.707769][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.707769][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.707769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.707769][ T72] [ 1279.711269][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1279.711269][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1279.711269][ T72] ipv6_find_idev+0x102/0x170 [ 1279.711269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.711269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.711269][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.711269][ T72] netlink_unicast+0x449/0x710 [ 1279.711269][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.711269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.711269][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.711269][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.711269][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.711269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.711269][ T72] [ 1279.713918][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1279.713918][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1279.713918][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1279.713918][ T72] ipv6_find_idev+0x102/0x170 [ 1279.713918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1279.713918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1279.713918][ T72] netlink_rcv_skb+0x130/0x360 [ 1279.713918][ T72] netlink_unicast+0x449/0x710 [ 1279.713918][ T72] netlink_sendmsg+0x723/0xbe0 [ 1279.713918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1279.713918][ T72] ___sys_sendmsg+0xee/0x170 [ 1279.713918][ T72] __sys_sendmsg+0xcd/0x170 [ 1279.713918][ T72] do_syscall_64+0xc6/0x1e0 [ 1279.713918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1279.713918][ T72] [ 1289.958831][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1289.959539][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1289.959539][ T72] netdev_get_by_index+0x5e/0x80 [ 1289.959539][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1289.959539][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1289.959539][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1289.959539][ T72] ipv6_add_addr+0x411/0x2000 [ 1289.959539][ T72] inet6_addr_add+0x30e/0xa40 [ 1289.959539][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1289.959539][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.959539][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.959539][ T72] netlink_unicast+0x449/0x710 [ 1289.959539][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.959539][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.959539][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.959539][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.959539][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.959539][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.959539][ T72] [ 1289.962666][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1289.962666][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1289.962666][ T72] ipv6_find_idev+0x102/0x170 [ 1289.962666][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.962666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.962666][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.962666][ T72] netlink_unicast+0x449/0x710 [ 1289.962666][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.962666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.962666][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.962666][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.962666][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.962666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.962666][ T72] [ 1289.965084][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1289.965084][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1289.965084][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1289.965084][ T72] ipv6_find_idev+0x102/0x170 [ 1289.965084][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.965084][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.965084][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.965084][ T72] netlink_unicast+0x449/0x710 [ 1289.965084][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.965084][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.965084][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.965084][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.965084][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.965084][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.965084][ T72] [ 1289.967727][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1289.968173][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1289.968173][ T72] netdev_get_by_index+0x5e/0x80 [ 1289.968173][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1289.968173][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1289.968173][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1289.968173][ T72] ipv6_add_addr+0x411/0x2000 [ 1289.968173][ T72] inet6_addr_add+0x30e/0xa40 [ 1289.968173][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1289.968173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.968173][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.968173][ T72] netlink_unicast+0x449/0x710 [ 1289.968173][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.968173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.968173][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.968173][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.968173][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.968173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.968173][ T72] [ 1289.971424][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1289.971424][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1289.971424][ T72] ipv6_find_idev+0x102/0x170 [ 1289.971424][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.971424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.971424][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.971424][ T72] netlink_unicast+0x449/0x710 [ 1289.971424][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.971424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.971424][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.971424][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.971424][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.971424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.971424][ T72] [ 1289.973825][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1289.973825][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1289.973825][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1289.973825][ T72] ipv6_find_idev+0x102/0x170 [ 1289.973825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.973825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.973825][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.973825][ T72] netlink_unicast+0x449/0x710 [ 1289.973825][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.973825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.973825][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.973825][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.973825][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.973825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.973825][ T72] [ 1289.976460][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1289.976890][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1289.976890][ T72] netdev_get_by_index+0x5e/0x80 [ 1289.976890][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1289.976890][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1289.976890][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1289.976890][ T72] ipv6_add_addr+0x411/0x2000 [ 1289.976890][ T72] inet6_addr_add+0x30e/0xa40 [ 1289.976890][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1289.976890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.976890][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.976890][ T72] netlink_unicast+0x449/0x710 [ 1289.976890][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.976890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.976890][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.976890][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.976890][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.976890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.976890][ T72] [ 1289.980056][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1289.980056][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1289.980056][ T72] ipv6_find_idev+0x102/0x170 [ 1289.980056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.980056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.980056][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.980056][ T72] netlink_unicast+0x449/0x710 [ 1289.980056][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.980056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.980056][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.980056][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.980056][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.980056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.980056][ T72] [ 1289.982450][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1289.982450][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1289.982450][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1289.982450][ T72] ipv6_find_idev+0x102/0x170 [ 1289.982450][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.982450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.982450][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.982450][ T72] netlink_unicast+0x449/0x710 [ 1289.982450][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.982450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.982450][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.982450][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.982450][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.982450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.982450][ T72] [ 1289.985078][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1289.985497][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1289.985497][ T72] netdev_get_by_index+0x5e/0x80 [ 1289.985497][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1289.985497][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1289.985497][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1289.985497][ T72] ipv6_add_addr+0x411/0x2000 [ 1289.985497][ T72] inet6_addr_add+0x30e/0xa40 [ 1289.985497][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1289.985497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.985497][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.985497][ T72] netlink_unicast+0x449/0x710 [ 1289.985497][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.985497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.985497][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.985497][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.985497][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.985497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.985497][ T72] [ 1289.988606][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1289.988606][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1289.988606][ T72] ipv6_find_idev+0x102/0x170 [ 1289.988606][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.988606][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.988606][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.988606][ T72] netlink_unicast+0x449/0x710 [ 1289.988606][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.988606][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.988606][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.988606][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.988606][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.988606][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.988606][ T72] [ 1289.991026][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1289.991026][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1289.991026][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1289.991026][ T72] ipv6_find_idev+0x102/0x170 [ 1289.991026][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.991026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.991026][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.991026][ T72] netlink_unicast+0x449/0x710 [ 1289.991026][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.991026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.991026][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.991026][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.991026][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.991026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.991026][ T72] [ 1289.994442][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1289.995540][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1289.995540][ T72] netdev_get_by_index+0x5e/0x80 [ 1289.995540][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1289.995540][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1289.995540][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1289.995540][ T72] ipv6_add_addr+0x411/0x2000 [ 1289.995540][ T72] inet6_addr_add+0x30e/0xa40 [ 1289.995540][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1289.995540][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.995540][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.995540][ T72] netlink_unicast+0x449/0x710 [ 1289.995540][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.995540][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.995540][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.995540][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.995540][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.995540][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.995540][ T72] [ 1289.998685][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1289.998685][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1289.998685][ T72] ipv6_find_idev+0x102/0x170 [ 1289.998685][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1289.998685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1289.998685][ T72] netlink_rcv_skb+0x130/0x360 [ 1289.998685][ T72] netlink_unicast+0x449/0x710 [ 1289.998685][ T72] netlink_sendmsg+0x723/0xbe0 [ 1289.998685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1289.998685][ T72] ___sys_sendmsg+0xee/0x170 [ 1289.998685][ T72] __sys_sendmsg+0xcd/0x170 [ 1289.998685][ T72] do_syscall_64+0xc6/0x1e0 [ 1289.998685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1289.998685][ T72] [ 1290.001200][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1290.001200][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1290.001200][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1290.001200][ T72] ipv6_find_idev+0x102/0x170 [ 1290.001200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1290.001200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.001200][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.001200][ T72] netlink_unicast+0x449/0x710 [ 1290.001200][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.001200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.001200][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.001200][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.001200][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.001200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.001200][ T72] [ 1290.003827][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1290.004236][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1290.004236][ T72] netdev_get_by_index+0x5e/0x80 [ 1290.004236][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1290.004236][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1290.004236][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1290.004236][ T72] ipv6_add_addr+0x411/0x2000 [ 1290.004236][ T72] inet6_addr_add+0x30e/0xa40 [ 1290.004236][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1290.004236][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.004236][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.004236][ T72] netlink_unicast+0x449/0x710 [ 1290.004236][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.004236][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.004236][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.004236][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.004236][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.004236][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.004236][ T72] [ 1290.007352][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1290.007352][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1290.007352][ T72] ipv6_find_idev+0x102/0x170 [ 1290.007352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1290.007352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.007352][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.007352][ T72] netlink_unicast+0x449/0x710 [ 1290.007352][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.007352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.007352][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.007352][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.007352][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.007352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.007352][ T72] [ 1290.010902][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1290.010902][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1290.010902][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1290.010902][ T72] ipv6_find_idev+0x102/0x170 [ 1290.010902][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1290.010902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.010902][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.010902][ T72] netlink_unicast+0x449/0x710 [ 1290.010902][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.010902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.010902][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.010902][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.010902][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.010902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.010902][ T72] [ 1290.014041][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1290.014453][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1290.014453][ T72] netdev_get_by_index+0x5e/0x80 [ 1290.014453][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1290.014453][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1290.014453][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1290.014453][ T72] ipv6_add_addr+0x411/0x2000 [ 1290.014453][ T72] inet6_addr_add+0x30e/0xa40 [ 1290.014453][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1290.014453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.014453][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.014453][ T72] netlink_unicast+0x449/0x710 [ 1290.014453][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.014453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.014453][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.014453][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.014453][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.014453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.014453][ T72] [ 1290.018008][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1290.018008][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1290.018008][ T72] ipv6_find_idev+0x102/0x170 [ 1290.018008][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1290.018008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.018008][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.018008][ T72] netlink_unicast+0x449/0x710 [ 1290.018008][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.018008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.018008][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.018008][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.018008][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.018008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.018008][ T72] [ 1290.020729][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1290.020729][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1290.020729][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1290.020729][ T72] ipv6_find_idev+0x102/0x170 [ 1290.020729][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1290.020729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.020729][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.020729][ T72] netlink_unicast+0x449/0x710 [ 1290.020729][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.020729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.020729][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.020729][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.020729][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.020729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.020729][ T72] [ 1290.023781][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1290.024196][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1290.024196][ T72] netdev_get_by_index+0x5e/0x80 [ 1290.024196][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1290.024196][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1290.024196][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1290.024196][ T72] ipv6_add_addr+0x411/0x2000 [ 1290.024196][ T72] inet6_addr_add+0x30e/0xa40 [ 1290.024196][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1290.024196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.024196][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.024196][ T72] netlink_unicast+0x449/0x710 [ 1290.024196][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.024196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.024196][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.024196][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.024196][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.024196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.024196][ T72] [ 1290.027750][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1290.027750][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1290.027750][ T72] ipv6_find_idev+0x102/0x170 [ 1290.027750][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1290.027750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.027750][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.027750][ T72] netlink_unicast+0x449/0x710 [ 1290.027750][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.027750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.027750][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.027750][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.027750][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.027750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.027750][ T72] [ 1290.030698][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1290.030698][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1290.030698][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1290.030698][ T72] ipv6_find_idev+0x102/0x170 [ 1290.030698][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1290.030698][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1290.030698][ T72] netlink_rcv_skb+0x130/0x360 [ 1290.030698][ T72] netlink_unicast+0x449/0x710 [ 1290.030698][ T72] netlink_sendmsg+0x723/0xbe0 [ 1290.030698][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1290.030698][ T72] ___sys_sendmsg+0xee/0x170 [ 1290.030698][ T72] __sys_sendmsg+0xcd/0x170 [ 1290.030698][ T72] do_syscall_64+0xc6/0x1e0 [ 1290.030698][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1290.030698][ T72] [ 1300.062856][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1300.063469][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1300.063469][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.063469][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.063469][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.063469][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.063469][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.063469][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.063469][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.063469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.063469][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.063469][ T72] netlink_unicast+0x449/0x710 [ 1300.063469][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.063469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.063469][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.063469][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.063469][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.063469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.063469][ T72] [ 1300.065802][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1300.065802][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.065802][ T72] ipv6_find_idev+0x102/0x170 [ 1300.065802][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.065802][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.065802][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.065802][ T72] netlink_unicast+0x449/0x710 [ 1300.065802][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.065802][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.065802][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.065802][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.065802][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.065802][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.065802][ T72] [ 1300.067566][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1300.067566][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.067566][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.067566][ T72] ipv6_find_idev+0x102/0x170 [ 1300.067566][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.067566][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.067566][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.067566][ T72] netlink_unicast+0x449/0x710 [ 1300.067566][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.067566][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.067566][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.067566][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.067566][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.067566][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.067566][ T72] [ 1300.069430][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1300.069724][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1300.069724][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.069724][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.069724][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.069724][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.069724][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.069724][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.069724][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.069724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.069724][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.069724][ T72] netlink_unicast+0x449/0x710 [ 1300.069724][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.069724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.069724][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.069724][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.069724][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.069724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.069724][ T72] [ 1300.071905][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1300.071905][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.071905][ T72] ipv6_find_idev+0x102/0x170 [ 1300.071905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.071905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.071905][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.071905][ T72] netlink_unicast+0x449/0x710 [ 1300.071905][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.071905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.071905][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.071905][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.071905][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.071905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.071905][ T72] [ 1300.073599][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1300.073599][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.073599][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.073599][ T72] ipv6_find_idev+0x102/0x170 [ 1300.073599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.073599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.073599][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.073599][ T72] netlink_unicast+0x449/0x710 [ 1300.073599][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.073599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.073599][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.073599][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.073599][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.073599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.073599][ T72] [ 1300.075590][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1300.075890][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1300.075890][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.075890][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.075890][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.075890][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.075890][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.075890][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.075890][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.075890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.075890][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.075890][ T72] netlink_unicast+0x449/0x710 [ 1300.075890][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.075890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.075890][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.075890][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.075890][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.075890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.075890][ T72] [ 1300.078087][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1300.078087][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.078087][ T72] ipv6_find_idev+0x102/0x170 [ 1300.078087][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.078087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.078087][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.078087][ T72] netlink_unicast+0x449/0x710 [ 1300.078087][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.078087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.078087][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.078087][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.078087][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.078087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.078087][ T72] [ 1300.079797][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1300.079797][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.079797][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.079797][ T72] ipv6_find_idev+0x102/0x170 [ 1300.079797][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.079797][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.079797][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.079797][ T72] netlink_unicast+0x449/0x710 [ 1300.079797][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.079797][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.079797][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.079797][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.079797][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.079797][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.079797][ T72] [ 1300.081683][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1300.082038][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1300.082038][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.082038][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.082038][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.082038][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.082038][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.082038][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.082038][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.082038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.082038][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.082038][ T72] netlink_unicast+0x449/0x710 [ 1300.082038][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.082038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.082038][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.082038][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.082038][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.082038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.082038][ T72] [ 1300.084370][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1300.084370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.084370][ T72] ipv6_find_idev+0x102/0x170 [ 1300.084370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.084370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.084370][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.084370][ T72] netlink_unicast+0x449/0x710 [ 1300.084370][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.084370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.084370][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.084370][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.084370][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.084370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.084370][ T72] [ 1300.086185][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1300.086185][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.086185][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.086185][ T72] ipv6_find_idev+0x102/0x170 [ 1300.086185][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.086185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.086185][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.086185][ T72] netlink_unicast+0x449/0x710 [ 1300.086185][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.086185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.086185][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.086185][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.086185][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.086185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.086185][ T72] [ 1300.088223][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1300.088526][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1300.088526][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.088526][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.088526][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.088526][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.088526][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.088526][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.088526][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.088526][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.088526][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.088526][ T72] netlink_unicast+0x449/0x710 [ 1300.088526][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.088526][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.088526][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.088526][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.088526][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.088526][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.088526][ T72] [ 1300.090869][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1300.090869][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.090869][ T72] ipv6_find_idev+0x102/0x170 [ 1300.090869][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.090869][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.090869][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.090869][ T72] netlink_unicast+0x449/0x710 [ 1300.090869][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.090869][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.090869][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.090869][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.090869][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.090869][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.090869][ T72] [ 1300.092643][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1300.092643][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.092643][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.092643][ T72] ipv6_find_idev+0x102/0x170 [ 1300.092643][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.092643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.092643][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.092643][ T72] netlink_unicast+0x449/0x710 [ 1300.092643][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.092643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.092643][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.092643][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.092643][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.092643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.092643][ T72] [ 1300.094839][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1300.095133][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1300.095133][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.095133][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.095133][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.095133][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.095133][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.095133][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.095133][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.095133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.095133][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.095133][ T72] netlink_unicast+0x449/0x710 [ 1300.095133][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.095133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.095133][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.095133][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.095133][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.095133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.095133][ T72] [ 1300.097646][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1300.097646][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.097646][ T72] ipv6_find_idev+0x102/0x170 [ 1300.097646][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.097646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.097646][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.097646][ T72] netlink_unicast+0x449/0x710 [ 1300.097646][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.097646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.097646][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.097646][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.097646][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.097646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.097646][ T72] [ 1300.099519][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1300.099519][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.099519][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.099519][ T72] ipv6_find_idev+0x102/0x170 [ 1300.099519][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.099519][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.099519][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.099519][ T72] netlink_unicast+0x449/0x710 [ 1300.099519][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.099519][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.099519][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.099519][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.099519][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.099519][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.099519][ T72] [ 1300.101750][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1300.102070][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1300.102070][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.102070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.102070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.102070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.102070][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.102070][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.102070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.102070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.102070][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.102070][ T72] netlink_unicast+0x449/0x710 [ 1300.102070][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.102070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.102070][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.102070][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.102070][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.102070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.102070][ T72] [ 1300.104645][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1300.104645][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.104645][ T72] ipv6_find_idev+0x102/0x170 [ 1300.104645][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.104645][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.104645][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.104645][ T72] netlink_unicast+0x449/0x710 [ 1300.104645][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.104645][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.104645][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.104645][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.104645][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.104645][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.104645][ T72] [ 1300.106553][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1300.106553][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.106553][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.106553][ T72] ipv6_find_idev+0x102/0x170 [ 1300.106553][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.106553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.106553][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.106553][ T72] netlink_unicast+0x449/0x710 [ 1300.106553][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.106553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.106553][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.106553][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.106553][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.106553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.106553][ T72] [ 1300.108923][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1300.109224][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1300.109224][ T72] netdev_get_by_index+0x5e/0x80 [ 1300.109224][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1300.109224][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1300.109224][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1300.109224][ T72] ipv6_add_addr+0x411/0x2000 [ 1300.109224][ T72] inet6_addr_add+0x30e/0xa40 [ 1300.109224][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1300.109224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.109224][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.109224][ T72] netlink_unicast+0x449/0x710 [ 1300.109224][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.109224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.109224][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.109224][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.109224][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.109224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.109224][ T72] [ 1300.111767][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1300.111767][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1300.111767][ T72] ipv6_find_idev+0x102/0x170 [ 1300.111767][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.111767][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.111767][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.111767][ T72] netlink_unicast+0x449/0x710 [ 1300.111767][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.111767][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.111767][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.111767][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.111767][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.111767][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.111767][ T72] [ 1300.113761][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1300.113761][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1300.113761][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1300.113761][ T72] ipv6_find_idev+0x102/0x170 [ 1300.113761][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1300.113761][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1300.113761][ T72] netlink_rcv_skb+0x130/0x360 [ 1300.113761][ T72] netlink_unicast+0x449/0x710 [ 1300.113761][ T72] netlink_sendmsg+0x723/0xbe0 [ 1300.113761][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1300.113761][ T72] ___sys_sendmsg+0xee/0x170 [ 1300.113761][ T72] __sys_sendmsg+0xcd/0x170 [ 1300.113761][ T72] do_syscall_64+0xc6/0x1e0 [ 1300.113761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1300.113761][ T72] [ 1310.366872][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1310.367364][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1310.367364][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.367364][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.367364][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.367364][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.367364][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.367364][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.367364][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.367364][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.367364][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.367364][ T72] netlink_unicast+0x449/0x710 [ 1310.367364][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.367364][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.367364][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.367364][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.367364][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.367364][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.367364][ T72] [ 1310.369603][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1310.369603][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.369603][ T72] ipv6_find_idev+0x102/0x170 [ 1310.369603][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.369603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.369603][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.369603][ T72] netlink_unicast+0x449/0x710 [ 1310.369603][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.369603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.369603][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.369603][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.369603][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.369603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.369603][ T72] [ 1310.371307][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1310.371307][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.371307][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.371307][ T72] ipv6_find_idev+0x102/0x170 [ 1310.371307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.371307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.371307][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.371307][ T72] netlink_unicast+0x449/0x710 [ 1310.371307][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.371307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.371307][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.371307][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.371307][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.371307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.371307][ T72] [ 1310.373201][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1310.373503][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1310.373503][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.373503][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.373503][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.373503][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.373503][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.373503][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.373503][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.373503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.373503][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.373503][ T72] netlink_unicast+0x449/0x710 [ 1310.373503][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.373503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.373503][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.373503][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.373503][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.373503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.373503][ T72] [ 1310.375740][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1310.375740][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.375740][ T72] ipv6_find_idev+0x102/0x170 [ 1310.375740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.375740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.375740][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.375740][ T72] netlink_unicast+0x449/0x710 [ 1310.375740][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.375740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.375740][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.375740][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.375740][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.375740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.375740][ T72] [ 1310.377480][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1310.377480][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.377480][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.377480][ T72] ipv6_find_idev+0x102/0x170 [ 1310.377480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.377480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.377480][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.377480][ T72] netlink_unicast+0x449/0x710 [ 1310.377480][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.377480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.377480][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.377480][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.377480][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.377480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.377480][ T72] [ 1310.379385][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1310.379670][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1310.379670][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.379670][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.379670][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.379670][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.379670][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.379670][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.379670][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.379670][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.379670][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.379670][ T72] netlink_unicast+0x449/0x710 [ 1310.379670][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.379670][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.379670][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.379670][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.379670][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.379670][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.379670][ T72] [ 1310.381886][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1310.381886][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.381886][ T72] ipv6_find_idev+0x102/0x170 [ 1310.381886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.381886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.381886][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.381886][ T72] netlink_unicast+0x449/0x710 [ 1310.381886][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.381886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.381886][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.381886][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.381886][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.381886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.381886][ T72] [ 1310.383620][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1310.383620][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.383620][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.383620][ T72] ipv6_find_idev+0x102/0x170 [ 1310.383620][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.383620][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.383620][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.383620][ T72] netlink_unicast+0x449/0x710 [ 1310.383620][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.383620][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.383620][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.383620][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.383620][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.383620][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.383620][ T72] [ 1310.385492][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1310.386219][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1310.386219][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.386219][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.386219][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.386219][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.386219][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.386219][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.386219][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.386219][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.386219][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.386219][ T72] netlink_unicast+0x449/0x710 [ 1310.386219][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.386219][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.386219][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.386219][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.386219][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.386219][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.386219][ T72] [ 1310.388449][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1310.388449][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.388449][ T72] ipv6_find_idev+0x102/0x170 [ 1310.388449][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.388449][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.388449][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.388449][ T72] netlink_unicast+0x449/0x710 [ 1310.388449][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.388449][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.388449][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.388449][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.388449][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.388449][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.388449][ T72] [ 1310.390177][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1310.390177][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.390177][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.390177][ T72] ipv6_find_idev+0x102/0x170 [ 1310.390177][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.390177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.390177][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.390177][ T72] netlink_unicast+0x449/0x710 [ 1310.390177][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.390177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.390177][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.390177][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.390177][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.390177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.390177][ T72] [ 1310.392096][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1310.392427][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1310.392427][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.392427][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.392427][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.392427][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.392427][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.392427][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.392427][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.392427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.392427][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.392427][ T72] netlink_unicast+0x449/0x710 [ 1310.392427][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.392427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.392427][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.392427][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.392427][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.392427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.392427][ T72] [ 1310.394648][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1310.394648][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.394648][ T72] ipv6_find_idev+0x102/0x170 [ 1310.394648][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.394648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.394648][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.394648][ T72] netlink_unicast+0x449/0x710 [ 1310.394648][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.394648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.394648][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.394648][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.394648][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.394648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.394648][ T72] [ 1310.396357][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1310.396357][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.396357][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.396357][ T72] ipv6_find_idev+0x102/0x170 [ 1310.396357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.396357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.396357][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.396357][ T72] netlink_unicast+0x449/0x710 [ 1310.396357][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.396357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.396357][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.396357][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.396357][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.396357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.396357][ T72] [ 1310.398279][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1310.398621][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1310.398621][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.398621][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.398621][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.398621][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.398621][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.398621][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.398621][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.398621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.398621][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.398621][ T72] netlink_unicast+0x449/0x710 [ 1310.398621][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.398621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.398621][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.398621][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.398621][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.398621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.398621][ T72] [ 1310.400849][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1310.400849][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.400849][ T72] ipv6_find_idev+0x102/0x170 [ 1310.400849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.400849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.400849][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.400849][ T72] netlink_unicast+0x449/0x710 [ 1310.400849][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.400849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.400849][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.400849][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.400849][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.400849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.400849][ T72] [ 1310.402743][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1310.402743][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.402743][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.402743][ T72] ipv6_find_idev+0x102/0x170 [ 1310.402743][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.402743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.402743][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.402743][ T72] netlink_unicast+0x449/0x710 [ 1310.402743][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.402743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.402743][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.402743][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.402743][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.402743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.402743][ T72] [ 1310.404996][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1310.405331][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1310.405331][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.405331][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.405331][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.405331][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.405331][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.405331][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.405331][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.405331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.405331][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.405331][ T72] netlink_unicast+0x449/0x710 [ 1310.405331][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.405331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.405331][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.405331][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.405331][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.405331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.405331][ T72] [ 1310.407729][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1310.407729][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.407729][ T72] ipv6_find_idev+0x102/0x170 [ 1310.407729][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.407729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.407729][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.407729][ T72] netlink_unicast+0x449/0x710 [ 1310.407729][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.407729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.407729][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.407729][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.407729][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.407729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.407729][ T72] [ 1310.409648][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1310.409648][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.409648][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.409648][ T72] ipv6_find_idev+0x102/0x170 [ 1310.409648][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.409648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.409648][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.409648][ T72] netlink_unicast+0x449/0x710 [ 1310.409648][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.409648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.409648][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.409648][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.409648][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.409648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.409648][ T72] [ 1310.411729][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1310.412127][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1310.412127][ T72] netdev_get_by_index+0x5e/0x80 [ 1310.412127][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1310.412127][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1310.412127][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1310.412127][ T72] ipv6_add_addr+0x411/0x2000 [ 1310.412127][ T72] inet6_addr_add+0x30e/0xa40 [ 1310.412127][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1310.412127][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.412127][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.412127][ T72] netlink_unicast+0x449/0x710 [ 1310.412127][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.412127][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.412127][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.412127][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.412127][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.412127][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.412127][ T72] [ 1310.414492][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1310.414492][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1310.414492][ T72] ipv6_find_idev+0x102/0x170 [ 1310.414492][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.414492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.414492][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.414492][ T72] netlink_unicast+0x449/0x710 [ 1310.414492][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.414492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.414492][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.414492][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.414492][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.414492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.414492][ T72] [ 1310.416493][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1310.416493][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1310.416493][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1310.416493][ T72] ipv6_find_idev+0x102/0x170 [ 1310.416493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1310.416493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1310.416493][ T72] netlink_rcv_skb+0x130/0x360 [ 1310.416493][ T72] netlink_unicast+0x449/0x710 [ 1310.416493][ T72] netlink_sendmsg+0x723/0xbe0 [ 1310.416493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1310.416493][ T72] ___sys_sendmsg+0xee/0x170 [ 1310.416493][ T72] __sys_sendmsg+0xcd/0x170 [ 1310.416493][ T72] do_syscall_64+0xc6/0x1e0 [ 1310.416493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1310.416493][ T72] [ 1320.590838][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1320.591477][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1320.591477][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.591477][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.591477][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.591477][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.591477][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.591477][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.591477][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.591477][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.591477][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.591477][ T72] netlink_unicast+0x449/0x710 [ 1320.591477][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.591477][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.591477][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.591477][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.591477][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.591477][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.591477][ T72] [ 1320.593939][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1320.593939][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.593939][ T72] ipv6_find_idev+0x102/0x170 [ 1320.593939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.593939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.593939][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.593939][ T72] netlink_unicast+0x449/0x710 [ 1320.593939][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.593939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.593939][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.593939][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.593939][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.593939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.593939][ T72] [ 1320.595754][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1320.595754][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.595754][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.595754][ T72] ipv6_find_idev+0x102/0x170 [ 1320.595754][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.595754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.595754][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.595754][ T72] netlink_unicast+0x449/0x710 [ 1320.595754][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.595754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.595754][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.595754][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.595754][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.595754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.595754][ T72] [ 1320.598566][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1320.599046][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1320.599046][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.599046][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.599046][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.599046][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.599046][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.599046][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.599046][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.599046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.599046][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.599046][ T72] netlink_unicast+0x449/0x710 [ 1320.599046][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.599046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.599046][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.599046][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.599046][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.599046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.599046][ T72] [ 1320.601479][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1320.601479][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.601479][ T72] ipv6_find_idev+0x102/0x170 [ 1320.601479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.601479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.601479][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.601479][ T72] netlink_unicast+0x449/0x710 [ 1320.601479][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.601479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.601479][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.601479][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.601479][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.601479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.601479][ T72] [ 1320.603198][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1320.603198][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.603198][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.603198][ T72] ipv6_find_idev+0x102/0x170 [ 1320.603198][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.603198][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.603198][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.603198][ T72] netlink_unicast+0x449/0x710 [ 1320.603198][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.603198][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.603198][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.603198][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.603198][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.603198][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.603198][ T72] [ 1320.605068][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1320.605354][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1320.605354][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.605354][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.605354][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.605354][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.605354][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.605354][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.605354][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.605354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.605354][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.605354][ T72] netlink_unicast+0x449/0x710 [ 1320.605354][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.605354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.605354][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.605354][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.605354][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.605354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.605354][ T72] [ 1320.607957][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1320.607957][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.607957][ T72] ipv6_find_idev+0x102/0x170 [ 1320.607957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.607957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.607957][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.607957][ T72] netlink_unicast+0x449/0x710 [ 1320.607957][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.607957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.607957][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.607957][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.607957][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.607957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.607957][ T72] [ 1320.609641][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1320.609641][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.609641][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.609641][ T72] ipv6_find_idev+0x102/0x170 [ 1320.609641][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.609641][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.609641][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.609641][ T72] netlink_unicast+0x449/0x710 [ 1320.609641][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.609641][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.609641][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.609641][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.609641][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.609641][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.609641][ T72] [ 1320.611481][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1320.611772][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1320.611772][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.611772][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.611772][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.611772][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.611772][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.611772][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.611772][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.611772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.611772][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.611772][ T72] netlink_unicast+0x449/0x710 [ 1320.611772][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.611772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.611772][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.611772][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.611772][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.611772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.611772][ T72] [ 1320.614361][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1320.614361][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.614361][ T72] ipv6_find_idev+0x102/0x170 [ 1320.614361][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.614361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.614361][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.614361][ T72] netlink_unicast+0x449/0x710 [ 1320.614361][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.614361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.614361][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.614361][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.614361][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.614361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.614361][ T72] [ 1320.616092][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1320.616092][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.616092][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.616092][ T72] ipv6_find_idev+0x102/0x170 [ 1320.616092][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.616092][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.616092][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.616092][ T72] netlink_unicast+0x449/0x710 [ 1320.616092][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.616092][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.616092][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.616092][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.616092][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.616092][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.616092][ T72] [ 1320.618343][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1320.618637][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1320.618637][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.618637][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.618637][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.618637][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.618637][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.618637][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.618637][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.618637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.618637][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.618637][ T72] netlink_unicast+0x449/0x710 [ 1320.618637][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.618637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.618637][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.618637][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.618637][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.618637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.618637][ T72] [ 1320.620847][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1320.620847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.620847][ T72] ipv6_find_idev+0x102/0x170 [ 1320.620847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.620847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.620847][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.620847][ T72] netlink_unicast+0x449/0x710 [ 1320.620847][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.620847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.620847][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.620847][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.620847][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.620847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.620847][ T72] [ 1320.622537][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1320.622537][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.622537][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.622537][ T72] ipv6_find_idev+0x102/0x170 [ 1320.622537][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.622537][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.622537][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.622537][ T72] netlink_unicast+0x449/0x710 [ 1320.622537][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.622537][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.622537][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.622537][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.622537][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.622537][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.622537][ T72] [ 1320.624438][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1320.624725][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1320.624725][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.624725][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.624725][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.624725][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.624725][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.624725][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.624725][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.624725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.624725][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.624725][ T72] netlink_unicast+0x449/0x710 [ 1320.624725][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.624725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.624725][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.624725][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.624725][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.624725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.624725][ T72] [ 1320.627045][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1320.627045][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.627045][ T72] ipv6_find_idev+0x102/0x170 [ 1320.627045][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.627045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.627045][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.627045][ T72] netlink_unicast+0x449/0x710 [ 1320.627045][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.627045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.627045][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.627045][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.627045][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.627045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.627045][ T72] [ 1320.628907][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1320.628907][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.628907][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.628907][ T72] ipv6_find_idev+0x102/0x170 [ 1320.628907][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.628907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.628907][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.628907][ T72] netlink_unicast+0x449/0x710 [ 1320.628907][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.628907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.628907][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.628907][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.628907][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.628907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.628907][ T72] [ 1320.631081][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1320.631361][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1320.631361][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.631361][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.631361][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.631361][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.631361][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.631361][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.631361][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.631361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.631361][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.631361][ T72] netlink_unicast+0x449/0x710 [ 1320.631361][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.631361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.631361][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.631361][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.631361][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.631361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.631361][ T72] [ 1320.633735][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1320.633735][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.633735][ T72] ipv6_find_idev+0x102/0x170 [ 1320.633735][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.633735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.633735][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.633735][ T72] netlink_unicast+0x449/0x710 [ 1320.633735][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.633735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.633735][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.633735][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.633735][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.633735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.633735][ T72] [ 1320.635604][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1320.635604][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.635604][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.635604][ T72] ipv6_find_idev+0x102/0x170 [ 1320.635604][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.635604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.635604][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.635604][ T72] netlink_unicast+0x449/0x710 [ 1320.635604][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.635604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.635604][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.635604][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.635604][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.635604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.635604][ T72] [ 1320.637701][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1320.638051][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1320.638051][ T72] netdev_get_by_index+0x5e/0x80 [ 1320.638051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1320.638051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1320.638051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1320.638051][ T72] ipv6_add_addr+0x411/0x2000 [ 1320.638051][ T72] inet6_addr_add+0x30e/0xa40 [ 1320.638051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1320.638051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.638051][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.638051][ T72] netlink_unicast+0x449/0x710 [ 1320.638051][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.638051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.638051][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.638051][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.638051][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.638051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.638051][ T72] [ 1320.640388][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1320.640388][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1320.640388][ T72] ipv6_find_idev+0x102/0x170 [ 1320.640388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.640388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.640388][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.640388][ T72] netlink_unicast+0x449/0x710 [ 1320.640388][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.640388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.640388][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.640388][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.640388][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.640388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.640388][ T72] [ 1320.642549][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1320.642549][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1320.642549][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1320.642549][ T72] ipv6_find_idev+0x102/0x170 [ 1320.642549][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1320.642549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1320.642549][ T72] netlink_rcv_skb+0x130/0x360 [ 1320.642549][ T72] netlink_unicast+0x449/0x710 [ 1320.642549][ T72] netlink_sendmsg+0x723/0xbe0 [ 1320.642549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1320.642549][ T72] ___sys_sendmsg+0xee/0x170 [ 1320.642549][ T72] __sys_sendmsg+0xcd/0x170 [ 1320.642549][ T72] do_syscall_64+0xc6/0x1e0 [ 1320.642549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1320.642549][ T72] [ 1330.735036][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1330.735595][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1330.735595][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.735595][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.735595][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.735595][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.735595][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.735595][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.735595][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.735595][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.735595][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.735595][ T72] netlink_unicast+0x449/0x710 [ 1330.735595][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.735595][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.735595][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.735595][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.735595][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.735595][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.735595][ T72] [ 1330.738940][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1330.738940][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.738940][ T72] ipv6_find_idev+0x102/0x170 [ 1330.738940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.738940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.738940][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.738940][ T72] netlink_unicast+0x449/0x710 [ 1330.738940][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.738940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.738940][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.738940][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.738940][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.738940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.738940][ T72] [ 1330.741515][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1330.741515][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.741515][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.741515][ T72] ipv6_find_idev+0x102/0x170 [ 1330.741515][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.741515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.741515][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.741515][ T72] netlink_unicast+0x449/0x710 [ 1330.741515][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.741515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.741515][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.741515][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.741515][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.741515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.741515][ T72] [ 1330.744371][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1330.744860][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1330.744860][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.744860][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.744860][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.744860][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.744860][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.744860][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.744860][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.744860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.744860][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.744860][ T72] netlink_unicast+0x449/0x710 [ 1330.744860][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.744860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.744860][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.744860][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.744860][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.744860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.744860][ T72] [ 1330.748234][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1330.748234][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.748234][ T72] ipv6_find_idev+0x102/0x170 [ 1330.748234][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.748234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.748234][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.748234][ T72] netlink_unicast+0x449/0x710 [ 1330.748234][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.748234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.748234][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.748234][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.748234][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.748234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.748234][ T72] [ 1330.750825][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1330.750825][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.750825][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.750825][ T72] ipv6_find_idev+0x102/0x170 [ 1330.750825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.750825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.750825][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.750825][ T72] netlink_unicast+0x449/0x710 [ 1330.750825][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.750825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.750825][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.750825][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.750825][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.750825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.750825][ T72] [ 1330.753668][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1330.754125][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1330.754125][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.754125][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.754125][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.754125][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.754125][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.754125][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.754125][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.754125][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.754125][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.754125][ T72] netlink_unicast+0x449/0x710 [ 1330.754125][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.754125][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.754125][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.754125][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.754125][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.754125][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.754125][ T72] [ 1330.757515][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1330.757515][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.757515][ T72] ipv6_find_idev+0x102/0x170 [ 1330.757515][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.757515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.757515][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.757515][ T72] netlink_unicast+0x449/0x710 [ 1330.757515][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.757515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.757515][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.757515][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.757515][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.757515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.757515][ T72] [ 1330.760103][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1330.760103][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.760103][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.760103][ T72] ipv6_find_idev+0x102/0x170 [ 1330.760103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.760103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.760103][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.760103][ T72] netlink_unicast+0x449/0x710 [ 1330.760103][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.760103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.760103][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.760103][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.760103][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.760103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.760103][ T72] [ 1330.762954][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1330.763392][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1330.763392][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.763392][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.763392][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.763392][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.763392][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.763392][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.763392][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.763392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.763392][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.763392][ T72] netlink_unicast+0x449/0x710 [ 1330.763392][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.763392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.763392][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.763392][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.763392][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.763392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.763392][ T72] [ 1330.766807][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1330.766807][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.766807][ T72] ipv6_find_idev+0x102/0x170 [ 1330.766807][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.766807][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.766807][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.766807][ T72] netlink_unicast+0x449/0x710 [ 1330.766807][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.766807][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.766807][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.766807][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.766807][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.766807][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.766807][ T72] [ 1330.769745][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1330.769745][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.769745][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.769745][ T72] ipv6_find_idev+0x102/0x170 [ 1330.769745][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.769745][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.769745][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.769745][ T72] netlink_unicast+0x449/0x710 [ 1330.769745][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.769745][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.769745][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.769745][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.769745][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.769745][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.769745][ T72] [ 1330.773029][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1330.773423][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1330.773423][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.773423][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.773423][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.773423][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.773423][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.773423][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.773423][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.773423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.773423][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.773423][ T72] netlink_unicast+0x449/0x710 [ 1330.773423][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.773423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.773423][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.773423][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.773423][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.773423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.773423][ T72] [ 1330.777155][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1330.777155][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.777155][ T72] ipv6_find_idev+0x102/0x170 [ 1330.777155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.777155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.777155][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.777155][ T72] netlink_unicast+0x449/0x710 [ 1330.777155][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.777155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.777155][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.777155][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.777155][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.777155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.777155][ T72] [ 1330.779742][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1330.779742][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.779742][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.779742][ T72] ipv6_find_idev+0x102/0x170 [ 1330.779742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.779742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.779742][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.779742][ T72] netlink_unicast+0x449/0x710 [ 1330.779742][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.779742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.779742][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.779742][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.779742][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.779742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.779742][ T72] [ 1330.782693][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1330.783147][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1330.783147][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.783147][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.783147][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.783147][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.783147][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.783147][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.783147][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.783147][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.783147][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.783147][ T72] netlink_unicast+0x449/0x710 [ 1330.783147][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.783147][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.783147][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.783147][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.783147][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.783147][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.783147][ T72] [ 1330.786704][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1330.786704][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.786704][ T72] ipv6_find_idev+0x102/0x170 [ 1330.786704][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.786704][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.786704][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.786704][ T72] netlink_unicast+0x449/0x710 [ 1330.786704][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.786704][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.786704][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.786704][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.786704][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.786704][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.786704][ T72] [ 1330.789664][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1330.789664][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.789664][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.789664][ T72] ipv6_find_idev+0x102/0x170 [ 1330.789664][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.789664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.789664][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.789664][ T72] netlink_unicast+0x449/0x710 [ 1330.789664][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.789664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.789664][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.789664][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.789664][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.789664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.789664][ T72] [ 1330.792922][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1330.793356][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1330.793356][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.793356][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.793356][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.793356][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.793356][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.793356][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.793356][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.793356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.793356][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.793356][ T72] netlink_unicast+0x449/0x710 [ 1330.793356][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.793356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.793356][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.793356][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.793356][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.793356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.793356][ T72] [ 1330.797202][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1330.797202][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.797202][ T72] ipv6_find_idev+0x102/0x170 [ 1330.797202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.797202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.797202][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.797202][ T72] netlink_unicast+0x449/0x710 [ 1330.797202][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.797202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.797202][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.797202][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.797202][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.797202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.797202][ T72] [ 1330.800143][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1330.800143][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.800143][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.800143][ T72] ipv6_find_idev+0x102/0x170 [ 1330.800143][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.800143][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.800143][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.800143][ T72] netlink_unicast+0x449/0x710 [ 1330.800143][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.800143][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.800143][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.800143][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.800143][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.800143][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.800143][ T72] [ 1330.803424][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1330.803969][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1330.803969][ T72] netdev_get_by_index+0x5e/0x80 [ 1330.803969][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1330.803969][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1330.803969][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1330.803969][ T72] ipv6_add_addr+0x411/0x2000 [ 1330.803969][ T72] inet6_addr_add+0x30e/0xa40 [ 1330.803969][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1330.803969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.803969][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.803969][ T72] netlink_unicast+0x449/0x710 [ 1330.803969][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.803969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.803969][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.803969][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.803969][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.803969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.803969][ T72] [ 1330.807673][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1330.807673][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1330.807673][ T72] ipv6_find_idev+0x102/0x170 [ 1330.807673][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.807673][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.807673][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.807673][ T72] netlink_unicast+0x449/0x710 [ 1330.807673][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.807673][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.807673][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.807673][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.807673][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.807673][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.807673][ T72] [ 1330.810615][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1330.810615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1330.810615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1330.810615][ T72] ipv6_find_idev+0x102/0x170 [ 1330.810615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1330.810615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1330.810615][ T72] netlink_rcv_skb+0x130/0x360 [ 1330.810615][ T72] netlink_unicast+0x449/0x710 [ 1330.810615][ T72] netlink_sendmsg+0x723/0xbe0 [ 1330.810615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1330.810615][ T72] ___sys_sendmsg+0xee/0x170 [ 1330.810615][ T72] __sys_sendmsg+0xcd/0x170 [ 1330.810615][ T72] do_syscall_64+0xc6/0x1e0 [ 1330.810615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1330.810615][ T72] [ 1340.846798][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1340.847254][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1340.847254][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.847254][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.847254][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.847254][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.847254][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.847254][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.847254][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.847254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.847254][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.847254][ T72] netlink_unicast+0x449/0x710 [ 1340.847254][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.847254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.847254][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.847254][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.847254][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.847254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.847254][ T72] [ 1340.849623][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1340.849623][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.849623][ T72] ipv6_find_idev+0x102/0x170 [ 1340.849623][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.849623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.849623][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.849623][ T72] netlink_unicast+0x449/0x710 [ 1340.849623][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.849623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.849623][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.849623][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.849623][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.849623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.849623][ T72] [ 1340.851441][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1340.851441][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.851441][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.851441][ T72] ipv6_find_idev+0x102/0x170 [ 1340.851441][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.851441][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.851441][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.851441][ T72] netlink_unicast+0x449/0x710 [ 1340.851441][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.851441][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.851441][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.851441][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.851441][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.851441][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.851441][ T72] [ 1340.853413][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1340.853726][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1340.853726][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.853726][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.853726][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.853726][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.853726][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.853726][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.853726][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.853726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.853726][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.853726][ T72] netlink_unicast+0x449/0x710 [ 1340.853726][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.853726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.853726][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.853726][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.853726][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.853726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.853726][ T72] [ 1340.856124][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1340.856124][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.856124][ T72] ipv6_find_idev+0x102/0x170 [ 1340.856124][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.856124][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.856124][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.856124][ T72] netlink_unicast+0x449/0x710 [ 1340.856124][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.856124][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.856124][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.856124][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.856124][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.856124][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.856124][ T72] [ 1340.857946][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1340.857946][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.857946][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.857946][ T72] ipv6_find_idev+0x102/0x170 [ 1340.857946][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.857946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.857946][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.857946][ T72] netlink_unicast+0x449/0x710 [ 1340.857946][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.857946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.857946][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.857946][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.857946][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.857946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.857946][ T72] [ 1340.859964][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1340.860274][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1340.860274][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.860274][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.860274][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.860274][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.860274][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.860274][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.860274][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.860274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.860274][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.860274][ T72] netlink_unicast+0x449/0x710 [ 1340.860274][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.860274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.860274][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.860274][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.860274][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.860274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.860274][ T72] [ 1340.862632][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1340.862632][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.862632][ T72] ipv6_find_idev+0x102/0x170 [ 1340.862632][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.862632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.862632][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.862632][ T72] netlink_unicast+0x449/0x710 [ 1340.862632][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.862632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.862632][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.862632][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.862632][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.862632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.862632][ T72] [ 1340.864491][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1340.864491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.864491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.864491][ T72] ipv6_find_idev+0x102/0x170 [ 1340.864491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.864491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.864491][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.864491][ T72] netlink_unicast+0x449/0x710 [ 1340.864491][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.864491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.864491][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.864491][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.864491][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.864491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.864491][ T72] [ 1340.867276][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1340.867758][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1340.867758][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.867758][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.867758][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.867758][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.867758][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.867758][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.867758][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.867758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.867758][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.867758][ T72] netlink_unicast+0x449/0x710 [ 1340.867758][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.867758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.867758][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.867758][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.867758][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.867758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.867758][ T72] [ 1340.870687][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1340.870687][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.870687][ T72] ipv6_find_idev+0x102/0x170 [ 1340.870687][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.870687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.870687][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.870687][ T72] netlink_unicast+0x449/0x710 [ 1340.870687][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.870687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.870687][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.870687][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.870687][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.870687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.870687][ T72] [ 1340.872532][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1340.872532][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.872532][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.872532][ T72] ipv6_find_idev+0x102/0x170 [ 1340.872532][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.872532][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.872532][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.872532][ T72] netlink_unicast+0x449/0x710 [ 1340.872532][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.872532][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.872532][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.872532][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.872532][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.872532][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.872532][ T72] [ 1340.876268][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1340.876759][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1340.876759][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.876759][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.876759][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.876759][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.876759][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.876759][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.876759][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.876759][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.876759][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.876759][ T72] netlink_unicast+0x449/0x710 [ 1340.876759][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.876759][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.876759][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.876759][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.876759][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.876759][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.876759][ T72] [ 1340.879710][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1340.879710][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.879710][ T72] ipv6_find_idev+0x102/0x170 [ 1340.879710][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.879710][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.879710][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.879710][ T72] netlink_unicast+0x449/0x710 [ 1340.879710][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.879710][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.879710][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.879710][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.879710][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.879710][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.879710][ T72] [ 1340.881554][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1340.881554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.881554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.881554][ T72] ipv6_find_idev+0x102/0x170 [ 1340.881554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.881554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.881554][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.881554][ T72] netlink_unicast+0x449/0x710 [ 1340.881554][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.881554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.881554][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.881554][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.881554][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.881554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.881554][ T72] [ 1340.883626][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1340.884015][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1340.884015][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.884015][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.884015][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.884015][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.884015][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.884015][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.884015][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.884015][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.884015][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.884015][ T72] netlink_unicast+0x449/0x710 [ 1340.884015][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.884015][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.884015][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.884015][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.884015][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.884015][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.884015][ T72] [ 1340.886956][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1340.886956][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.886956][ T72] ipv6_find_idev+0x102/0x170 [ 1340.886956][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.886956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.886956][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.886956][ T72] netlink_unicast+0x449/0x710 [ 1340.886956][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.886956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.886956][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.886956][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.886956][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.886956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.886956][ T72] [ 1340.889004][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1340.889004][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.889004][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.889004][ T72] ipv6_find_idev+0x102/0x170 [ 1340.889004][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.889004][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.889004][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.889004][ T72] netlink_unicast+0x449/0x710 [ 1340.889004][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.889004][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.889004][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.889004][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.889004][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.889004][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.889004][ T72] [ 1340.891333][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1340.891646][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1340.891646][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.891646][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.891646][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.891646][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.891646][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.891646][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.891646][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.891646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.891646][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.891646][ T72] netlink_unicast+0x449/0x710 [ 1340.891646][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.891646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.891646][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.891646][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.891646][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.891646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.891646][ T72] [ 1340.894307][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1340.894307][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.894307][ T72] ipv6_find_idev+0x102/0x170 [ 1340.894307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.894307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.894307][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.894307][ T72] netlink_unicast+0x449/0x710 [ 1340.894307][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.894307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.894307][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.894307][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.894307][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.894307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.894307][ T72] [ 1340.896330][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1340.896330][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.896330][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.896330][ T72] ipv6_find_idev+0x102/0x170 [ 1340.896330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.896330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.896330][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.896330][ T72] netlink_unicast+0x449/0x710 [ 1340.896330][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.896330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.896330][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.896330][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.896330][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.896330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.896330][ T72] [ 1340.898555][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1340.898915][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1340.898915][ T72] netdev_get_by_index+0x5e/0x80 [ 1340.898915][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1340.898915][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1340.898915][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1340.898915][ T72] ipv6_add_addr+0x411/0x2000 [ 1340.898915][ T72] inet6_addr_add+0x30e/0xa40 [ 1340.898915][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1340.898915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.898915][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.898915][ T72] netlink_unicast+0x449/0x710 [ 1340.898915][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.898915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.898915][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.898915][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.898915][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.898915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.898915][ T72] [ 1340.901484][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1340.901484][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1340.901484][ T72] ipv6_find_idev+0x102/0x170 [ 1340.901484][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.901484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.901484][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.901484][ T72] netlink_unicast+0x449/0x710 [ 1340.901484][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.901484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.901484][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.901484][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.901484][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.901484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.901484][ T72] [ 1340.903560][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1340.903560][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1340.903560][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1340.903560][ T72] ipv6_find_idev+0x102/0x170 [ 1340.903560][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1340.903560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1340.903560][ T72] netlink_rcv_skb+0x130/0x360 [ 1340.903560][ T72] netlink_unicast+0x449/0x710 [ 1340.903560][ T72] netlink_sendmsg+0x723/0xbe0 [ 1340.903560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1340.903560][ T72] ___sys_sendmsg+0xee/0x170 [ 1340.903560][ T72] __sys_sendmsg+0xcd/0x170 [ 1340.903560][ T72] do_syscall_64+0xc6/0x1e0 [ 1340.903560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1340.903560][ T72] [ 1351.142844][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1351.143338][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1351.143338][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.143338][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.143338][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.143338][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.143338][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.143338][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.143338][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.143338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.143338][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.143338][ T72] netlink_unicast+0x449/0x710 [ 1351.143338][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.143338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.143338][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.143338][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.143338][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.143338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.143338][ T72] [ 1351.145549][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1351.145549][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.145549][ T72] ipv6_find_idev+0x102/0x170 [ 1351.145549][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.145549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.145549][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.145549][ T72] netlink_unicast+0x449/0x710 [ 1351.145549][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.145549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.145549][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.145549][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.145549][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.145549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.145549][ T72] [ 1351.147235][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1351.147235][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.147235][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.147235][ T72] ipv6_find_idev+0x102/0x170 [ 1351.147235][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.147235][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.147235][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.147235][ T72] netlink_unicast+0x449/0x710 [ 1351.147235][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.147235][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.147235][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.147235][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.147235][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.147235][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.147235][ T72] [ 1351.149096][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1351.149382][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1351.149382][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.149382][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.149382][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.149382][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.149382][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.149382][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.149382][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.149382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.149382][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.149382][ T72] netlink_unicast+0x449/0x710 [ 1351.149382][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.149382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.149382][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.149382][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.149382][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.149382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.149382][ T72] [ 1351.151584][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1351.151584][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.151584][ T72] ipv6_find_idev+0x102/0x170 [ 1351.151584][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.151584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.151584][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.151584][ T72] netlink_unicast+0x449/0x710 [ 1351.151584][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.151584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.151584][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.151584][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.151584][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.151584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.151584][ T72] [ 1351.153279][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1351.153279][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.153279][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.153279][ T72] ipv6_find_idev+0x102/0x170 [ 1351.153279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.153279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.153279][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.153279][ T72] netlink_unicast+0x449/0x710 [ 1351.153279][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.153279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.153279][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.153279][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.153279][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.153279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.153279][ T72] [ 1351.155138][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1351.155427][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1351.155427][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.155427][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.155427][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.155427][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.155427][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.155427][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.155427][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.155427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.155427][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.155427][ T72] netlink_unicast+0x449/0x710 [ 1351.155427][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.155427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.155427][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.155427][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.155427][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.155427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.155427][ T72] [ 1351.157605][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1351.157605][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.157605][ T72] ipv6_find_idev+0x102/0x170 [ 1351.157605][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.157605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.157605][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.157605][ T72] netlink_unicast+0x449/0x710 [ 1351.157605][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.157605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.157605][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.157605][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.157605][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.157605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.157605][ T72] [ 1351.159313][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1351.159313][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.159313][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.159313][ T72] ipv6_find_idev+0x102/0x170 [ 1351.159313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.159313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.159313][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.159313][ T72] netlink_unicast+0x449/0x710 [ 1351.159313][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.159313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.159313][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.159313][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.159313][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.159313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.159313][ T72] [ 1351.161174][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1351.161462][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1351.161462][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.161462][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.161462][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.161462][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.161462][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.161462][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.161462][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.161462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.161462][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.161462][ T72] netlink_unicast+0x449/0x710 [ 1351.161462][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.161462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.161462][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.161462][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.161462][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.161462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.161462][ T72] [ 1351.163660][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1351.163660][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.163660][ T72] ipv6_find_idev+0x102/0x170 [ 1351.163660][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.163660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.163660][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.163660][ T72] netlink_unicast+0x449/0x710 [ 1351.163660][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.163660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.163660][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.163660][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.163660][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.163660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.163660][ T72] [ 1351.165357][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1351.165357][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.165357][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.165357][ T72] ipv6_find_idev+0x102/0x170 [ 1351.165357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.165357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.165357][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.165357][ T72] netlink_unicast+0x449/0x710 [ 1351.165357][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.165357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.165357][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.165357][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.165357][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.165357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.165357][ T72] [ 1351.167256][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1351.167542][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1351.167542][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.167542][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.167542][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.167542][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.167542][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.167542][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.167542][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.167542][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.167542][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.167542][ T72] netlink_unicast+0x449/0x710 [ 1351.167542][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.167542][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.167542][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.167542][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.167542][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.167542][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.167542][ T72] [ 1351.169762][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1351.169762][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.169762][ T72] ipv6_find_idev+0x102/0x170 [ 1351.169762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.169762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.169762][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.169762][ T72] netlink_unicast+0x449/0x710 [ 1351.169762][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.169762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.169762][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.169762][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.169762][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.169762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.169762][ T72] [ 1351.171527][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1351.171527][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.171527][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.171527][ T72] ipv6_find_idev+0x102/0x170 [ 1351.171527][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.171527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.171527][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.171527][ T72] netlink_unicast+0x449/0x710 [ 1351.171527][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.171527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.171527][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.171527][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.171527][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.171527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.171527][ T72] [ 1351.173591][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1351.173928][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1351.173928][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.173928][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.173928][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.173928][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.173928][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.173928][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.173928][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.173928][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.173928][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.173928][ T72] netlink_unicast+0x449/0x710 [ 1351.173928][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.173928][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.173928][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.173928][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.173928][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.173928][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.173928][ T72] [ 1351.176295][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1351.176295][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.176295][ T72] ipv6_find_idev+0x102/0x170 [ 1351.176295][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.176295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.176295][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.176295][ T72] netlink_unicast+0x449/0x710 [ 1351.176295][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.176295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.176295][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.176295][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.176295][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.176295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.176295][ T72] [ 1351.178208][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1351.178208][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.178208][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.178208][ T72] ipv6_find_idev+0x102/0x170 [ 1351.178208][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.178208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.178208][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.178208][ T72] netlink_unicast+0x449/0x710 [ 1351.178208][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.178208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.178208][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.178208][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.178208][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.178208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.178208][ T72] [ 1351.180265][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1351.180548][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1351.180548][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.180548][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.180548][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.180548][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.180548][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.180548][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.180548][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.180548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.180548][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.180548][ T72] netlink_unicast+0x449/0x710 [ 1351.180548][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.180548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.180548][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.180548][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.180548][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.180548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.180548][ T72] [ 1351.183485][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1351.183485][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.183485][ T72] ipv6_find_idev+0x102/0x170 [ 1351.183485][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.183485][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.183485][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.183485][ T72] netlink_unicast+0x449/0x710 [ 1351.183485][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.183485][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.183485][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.183485][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.183485][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.183485][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.183485][ T72] [ 1351.185355][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1351.185355][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.185355][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.185355][ T72] ipv6_find_idev+0x102/0x170 [ 1351.185355][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.185355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.185355][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.185355][ T72] netlink_unicast+0x449/0x710 [ 1351.185355][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.185355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.185355][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.185355][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.185355][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.185355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.185355][ T72] [ 1351.187416][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1351.187696][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1351.187696][ T72] netdev_get_by_index+0x5e/0x80 [ 1351.187696][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1351.187696][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1351.187696][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1351.187696][ T72] ipv6_add_addr+0x411/0x2000 [ 1351.187696][ T72] inet6_addr_add+0x30e/0xa40 [ 1351.187696][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1351.187696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.187696][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.187696][ T72] netlink_unicast+0x449/0x710 [ 1351.187696][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.187696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.187696][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.187696][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.187696][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.187696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.187696][ T72] [ 1351.190201][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1351.190201][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1351.190201][ T72] ipv6_find_idev+0x102/0x170 [ 1351.190201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.190201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.190201][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.190201][ T72] netlink_unicast+0x449/0x710 [ 1351.190201][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.190201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.190201][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.190201][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.190201][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.190201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.190201][ T72] [ 1351.192072][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1351.192072][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1351.192072][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1351.192072][ T72] ipv6_find_idev+0x102/0x170 [ 1351.192072][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1351.192072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1351.192072][ T72] netlink_rcv_skb+0x130/0x360 [ 1351.192072][ T72] netlink_unicast+0x449/0x710 [ 1351.192072][ T72] netlink_sendmsg+0x723/0xbe0 [ 1351.192072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1351.192072][ T72] ___sys_sendmsg+0xee/0x170 [ 1351.192072][ T72] __sys_sendmsg+0xcd/0x170 [ 1351.192072][ T72] do_syscall_64+0xc6/0x1e0 [ 1351.192072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1351.192072][ T72] [ 1352.998805][ T42] INFO: task modprobe:1060 blocked for more than 1105 seconds. [ 1352.999200][ T42] Not tainted 6.8.0-virtme #1 [ 1352.999346][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1352.999575][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 1352.999894][ T42] Call Trace: [ 1353.000010][ T42] [ 1353.000090][ T42] __schedule+0x705/0x1ac0 [ 1353.000245][ T42] ? __pfx___schedule+0x10/0x10 [ 1353.000388][ T42] ? schedule+0x1a5/0x210 [ 1353.000499][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1353.000646][ T42] ? mark_lock+0x38/0x3e0 [ 1353.000764][ T42] ? do_raw_spin_lock+0x131/0x270 [ 1353.000908][ T42] ? schedule+0x1a5/0x210 [ 1353.001021][ T42] schedule+0xdf/0x210 [ 1353.001135][ T42] schedule_preempt_disabled+0x15/0x30 [ 1353.001669][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 1353.001824][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 1353.001998][ T42] ? kasan_save_stack+0x34/0x50 [ 1353.002140][ T42] ? kasan_save_stack+0x24/0x50 [ 1353.002285][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1353.002433][ T42] ? lock_acquire+0x1c1/0x220 [ 1353.002577][ T42] ? register_pernet_subsys+0x1a/0x50 [ 1353.002730][ T42] down_write+0x1c9/0x200 [ 1353.002854][ T42] ? __pfx_down_write+0x10/0x10 [ 1353.002995][ T42] ? __pfx___lock_release+0x10/0x10 [ 1353.003142][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 1353.003355][ T42] register_pernet_subsys+0x1a/0x50 [ 1353.003502][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 1353.003700][ T42] do_one_initcall+0xc8/0x3f0 [ 1353.003868][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 1353.004013][ T42] ? __create_object+0x5e/0xb0 [ 1353.004161][ T42] ? kasan_unpoison+0x27/0x60 [ 1353.004307][ T42] do_init_module+0x233/0x740 [ 1353.004462][ T42] load_module+0x16b5/0x2350 [ 1353.004655][ T42] ? __pfx_load_module+0x10/0x10 [ 1353.004813][ T42] ? kernel_read_file+0x3d2/0x520 [ 1353.004961][ T42] ? kernel_read_file+0x300/0x520 [ 1353.005106][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 1353.005257][ T42] ? init_module_from_file+0xd2/0x130 [ 1353.005399][ T42] init_module_from_file+0xd2/0x130 [ 1353.005544][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 1353.005718][ T42] ? __lock_release+0x103/0x460 [ 1353.005868][ T42] ? idempotent_init_module+0x32a/0x620 [ 1353.006020][ T42] ? idempotent_init_module+0x32a/0x620 [ 1353.006162][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 1353.006310][ T42] idempotent_init_module+0x342/0x620 [ 1353.006454][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 1353.006646][ T42] __x64_sys_finit_module+0xbe/0x130 [ 1353.006800][ T42] do_syscall_64+0xc6/0x1e0 [ 1353.006942][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1353.007115][ T42] RIP: 0033:0x7f69f7397e5d [ 1353.007263][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 1353.007480][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 1353.007686][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 1353.007911][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 1353.008120][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 1353.008326][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 1353.008548][ T42] [ 1353.008654][ T42] [ 1353.008654][ T42] Showing all locks held in the system: [ 1353.008866][ T42] 1 lock held by khungtaskd/42: [ 1353.009006][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 1353.009262][ T42] 2 locks held by kworker/u20:1/60: [ 1353.009398][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1353.009683][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1353.010007][ T42] 3 locks held by kworker/u16:1/72: [ 1353.010143][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1353.010425][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1353.010674][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 1353.010938][ T42] 1 lock held by modprobe/1060: [ 1353.011076][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 1353.011356][ T42] [ 1353.011427][ T42] ============================================= [ 1353.011427][ T42] [ 1361.430829][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1361.431312][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1361.431312][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.431312][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.431312][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.431312][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.431312][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.431312][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.431312][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.431312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.431312][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.431312][ T72] netlink_unicast+0x449/0x710 [ 1361.431312][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.431312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.431312][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.431312][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.431312][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.431312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.431312][ T72] [ 1361.433541][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1361.433541][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.433541][ T72] ipv6_find_idev+0x102/0x170 [ 1361.433541][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.433541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.433541][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.433541][ T72] netlink_unicast+0x449/0x710 [ 1361.433541][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.433541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.433541][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.433541][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.433541][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.433541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.433541][ T72] [ 1361.435263][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1361.435263][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.435263][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.435263][ T72] ipv6_find_idev+0x102/0x170 [ 1361.435263][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.435263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.435263][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.435263][ T72] netlink_unicast+0x449/0x710 [ 1361.435263][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.435263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.435263][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.435263][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.435263][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.435263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.435263][ T72] [ 1361.437134][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1361.437424][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1361.437424][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.437424][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.437424][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.437424][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.437424][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.437424][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.437424][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.437424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.437424][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.437424][ T72] netlink_unicast+0x449/0x710 [ 1361.437424][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.437424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.437424][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.437424][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.437424][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.437424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.437424][ T72] [ 1361.439659][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1361.439659][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.439659][ T72] ipv6_find_idev+0x102/0x170 [ 1361.439659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.439659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.439659][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.439659][ T72] netlink_unicast+0x449/0x710 [ 1361.439659][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.439659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.439659][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.439659][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.439659][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.439659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.439659][ T72] [ 1361.441350][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1361.441350][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.441350][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.441350][ T72] ipv6_find_idev+0x102/0x170 [ 1361.441350][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.441350][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.441350][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.441350][ T72] netlink_unicast+0x449/0x710 [ 1361.441350][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.441350][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.441350][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.441350][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.441350][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.441350][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.441350][ T72] [ 1361.443659][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1361.443968][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1361.443968][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.443968][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.443968][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.443968][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.443968][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.443968][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.443968][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.443968][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.443968][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.443968][ T72] netlink_unicast+0x449/0x710 [ 1361.443968][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.443968][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.443968][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.443968][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.443968][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.443968][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.443968][ T72] [ 1361.446203][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1361.446203][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.446203][ T72] ipv6_find_idev+0x102/0x170 [ 1361.446203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.446203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.446203][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.446203][ T72] netlink_unicast+0x449/0x710 [ 1361.446203][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.446203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.446203][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.446203][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.446203][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.446203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.446203][ T72] [ 1361.447914][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1361.447914][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.447914][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.447914][ T72] ipv6_find_idev+0x102/0x170 [ 1361.447914][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.447914][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.447914][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.447914][ T72] netlink_unicast+0x449/0x710 [ 1361.447914][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.447914][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.447914][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.447914][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.447914][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.447914][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.447914][ T72] [ 1361.449783][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1361.450069][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1361.450069][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.450069][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.450069][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.450069][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.450069][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.450069][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.450069][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.450069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.450069][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.450069][ T72] netlink_unicast+0x449/0x710 [ 1361.450069][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.450069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.450069][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.450069][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.450069][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.450069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.450069][ T72] [ 1361.452288][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1361.452288][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.452288][ T72] ipv6_find_idev+0x102/0x170 [ 1361.452288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.452288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.452288][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.452288][ T72] netlink_unicast+0x449/0x710 [ 1361.452288][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.452288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.452288][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.452288][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.452288][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.452288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.452288][ T72] [ 1361.453990][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1361.453990][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.453990][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.453990][ T72] ipv6_find_idev+0x102/0x170 [ 1361.453990][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.453990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.453990][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.453990][ T72] netlink_unicast+0x449/0x710 [ 1361.453990][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.453990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.453990][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.453990][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.453990][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.453990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.453990][ T72] [ 1361.456270][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1361.456560][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1361.456560][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.456560][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.456560][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.456560][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.456560][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.456560][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.456560][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.456560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.456560][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.456560][ T72] netlink_unicast+0x449/0x710 [ 1361.456560][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.456560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.456560][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.456560][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.456560][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.456560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.456560][ T72] [ 1361.458806][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1361.458806][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.458806][ T72] ipv6_find_idev+0x102/0x170 [ 1361.458806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.458806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.458806][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.458806][ T72] netlink_unicast+0x449/0x710 [ 1361.458806][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.458806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.458806][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.458806][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.458806][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.458806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.458806][ T72] [ 1361.460505][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1361.460505][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.460505][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.460505][ T72] ipv6_find_idev+0x102/0x170 [ 1361.460505][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.460505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.460505][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.460505][ T72] netlink_unicast+0x449/0x710 [ 1361.460505][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.460505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.460505][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.460505][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.460505][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.460505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.460505][ T72] [ 1361.462435][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1361.462728][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1361.462728][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.462728][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.462728][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.462728][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.462728][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.462728][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.462728][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.462728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.462728][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.462728][ T72] netlink_unicast+0x449/0x710 [ 1361.462728][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.462728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.462728][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.462728][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.462728][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.462728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.462728][ T72] [ 1361.465043][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1361.465043][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.465043][ T72] ipv6_find_idev+0x102/0x170 [ 1361.465043][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.465043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.465043][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.465043][ T72] netlink_unicast+0x449/0x710 [ 1361.465043][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.465043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.465043][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.465043][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.465043][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.465043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.465043][ T72] [ 1361.466918][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1361.466918][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.466918][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.466918][ T72] ipv6_find_idev+0x102/0x170 [ 1361.466918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.466918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.466918][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.466918][ T72] netlink_unicast+0x449/0x710 [ 1361.466918][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.466918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.466918][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.466918][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.466918][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.466918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.466918][ T72] [ 1361.469106][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1361.469400][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1361.469400][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.469400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.469400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.469400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.469400][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.469400][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.469400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.469400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.469400][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.469400][ T72] netlink_unicast+0x449/0x710 [ 1361.469400][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.469400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.469400][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.469400][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.469400][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.469400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.469400][ T72] [ 1361.471769][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1361.471769][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.471769][ T72] ipv6_find_idev+0x102/0x170 [ 1361.471769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.471769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.471769][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.471769][ T72] netlink_unicast+0x449/0x710 [ 1361.471769][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.471769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.471769][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.471769][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.471769][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.471769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.471769][ T72] [ 1361.473644][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1361.473644][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.473644][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.473644][ T72] ipv6_find_idev+0x102/0x170 [ 1361.473644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.473644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.473644][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.473644][ T72] netlink_unicast+0x449/0x710 [ 1361.473644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.473644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.473644][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.473644][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.473644][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.473644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.473644][ T72] [ 1361.475717][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1361.476059][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1361.476059][ T72] netdev_get_by_index+0x5e/0x80 [ 1361.476059][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1361.476059][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1361.476059][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1361.476059][ T72] ipv6_add_addr+0x411/0x2000 [ 1361.476059][ T72] inet6_addr_add+0x30e/0xa40 [ 1361.476059][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1361.476059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.476059][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.476059][ T72] netlink_unicast+0x449/0x710 [ 1361.476059][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.476059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.476059][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.476059][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.476059][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.476059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.476059][ T72] [ 1361.478425][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1361.478425][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1361.478425][ T72] ipv6_find_idev+0x102/0x170 [ 1361.478425][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.478425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.478425][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.478425][ T72] netlink_unicast+0x449/0x710 [ 1361.478425][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.478425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.478425][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.478425][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.478425][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.478425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.478425][ T72] [ 1361.480479][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1361.480479][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1361.480479][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1361.480479][ T72] ipv6_find_idev+0x102/0x170 [ 1361.480479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1361.480479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1361.480479][ T72] netlink_rcv_skb+0x130/0x360 [ 1361.480479][ T72] netlink_unicast+0x449/0x710 [ 1361.480479][ T72] netlink_sendmsg+0x723/0xbe0 [ 1361.480479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1361.480479][ T72] ___sys_sendmsg+0xee/0x170 [ 1361.480479][ T72] __sys_sendmsg+0xcd/0x170 [ 1361.480479][ T72] do_syscall_64+0xc6/0x1e0 [ 1361.480479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1361.480479][ T72] [ 1371.630834][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1371.631315][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1371.631315][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.631315][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.631315][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.631315][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.631315][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.631315][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.631315][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.631315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.631315][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.631315][ T72] netlink_unicast+0x449/0x710 [ 1371.631315][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.631315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.631315][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.631315][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.631315][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.631315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.631315][ T72] [ 1371.633330][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1371.633330][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.633330][ T72] ipv6_find_idev+0x102/0x170 [ 1371.633330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.633330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.633330][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.633330][ T72] netlink_unicast+0x449/0x710 [ 1371.633330][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.633330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.633330][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.633330][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.633330][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.633330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.633330][ T72] [ 1371.634907][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1371.634907][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.634907][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.634907][ T72] ipv6_find_idev+0x102/0x170 [ 1371.634907][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.634907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.634907][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.634907][ T72] netlink_unicast+0x449/0x710 [ 1371.634907][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.634907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.634907][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.634907][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.634907][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.634907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.634907][ T72] [ 1371.636659][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1371.636946][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1371.636946][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.636946][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.636946][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.636946][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.636946][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.636946][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.636946][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.636946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.636946][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.636946][ T72] netlink_unicast+0x449/0x710 [ 1371.636946][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.636946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.636946][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.636946][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.636946][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.636946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.636946][ T72] [ 1371.638955][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1371.638955][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.638955][ T72] ipv6_find_idev+0x102/0x170 [ 1371.638955][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.638955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.638955][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.638955][ T72] netlink_unicast+0x449/0x710 [ 1371.638955][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.638955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.638955][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.638955][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.638955][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.638955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.638955][ T72] [ 1371.640509][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1371.640509][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.640509][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.640509][ T72] ipv6_find_idev+0x102/0x170 [ 1371.640509][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.640509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.640509][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.640509][ T72] netlink_unicast+0x449/0x710 [ 1371.640509][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.640509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.640509][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.640509][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.640509][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.640509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.640509][ T72] [ 1371.642721][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1371.642999][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1371.642999][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.642999][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.642999][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.642999][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.642999][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.642999][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.642999][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.642999][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.642999][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.642999][ T72] netlink_unicast+0x449/0x710 [ 1371.642999][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.642999][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.642999][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.642999][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.642999][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.642999][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.642999][ T72] [ 1371.645001][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1371.645001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.645001][ T72] ipv6_find_idev+0x102/0x170 [ 1371.645001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.645001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.645001][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.645001][ T72] netlink_unicast+0x449/0x710 [ 1371.645001][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.645001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.645001][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.645001][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.645001][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.645001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.645001][ T72] [ 1371.646917][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1371.646917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.646917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.646917][ T72] ipv6_find_idev+0x102/0x170 [ 1371.646917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.646917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.646917][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.646917][ T72] netlink_unicast+0x449/0x710 [ 1371.646917][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.646917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.646917][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.646917][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.646917][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.646917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.646917][ T72] [ 1371.648609][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1371.649325][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1371.649325][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.649325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.649325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.649325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.649325][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.649325][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.649325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.649325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.649325][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.649325][ T72] netlink_unicast+0x449/0x710 [ 1371.649325][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.649325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.649325][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.649325][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.649325][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.649325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.649325][ T72] [ 1371.651314][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1371.651314][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.651314][ T72] ipv6_find_idev+0x102/0x170 [ 1371.651314][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.651314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.651314][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.651314][ T72] netlink_unicast+0x449/0x710 [ 1371.651314][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.651314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.651314][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.651314][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.651314][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.651314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.651314][ T72] [ 1371.652847][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1371.652847][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.652847][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.652847][ T72] ipv6_find_idev+0x102/0x170 [ 1371.652847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.652847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.652847][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.652847][ T72] netlink_unicast+0x449/0x710 [ 1371.652847][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.652847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.652847][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.652847][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.652847][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.652847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.652847][ T72] [ 1371.654583][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1371.654902][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1371.654902][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.654902][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.654902][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.654902][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.654902][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.654902][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.654902][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.654902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.654902][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.654902][ T72] netlink_unicast+0x449/0x710 [ 1371.654902][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.654902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.654902][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.654902][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.654902][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.654902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.654902][ T72] [ 1371.656935][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1371.656935][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.656935][ T72] ipv6_find_idev+0x102/0x170 [ 1371.656935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.656935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.656935][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.656935][ T72] netlink_unicast+0x449/0x710 [ 1371.656935][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.656935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.656935][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.656935][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.656935][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.656935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.656935][ T72] [ 1371.658474][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1371.658474][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.658474][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.658474][ T72] ipv6_find_idev+0x102/0x170 [ 1371.658474][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.658474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.658474][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.658474][ T72] netlink_unicast+0x449/0x710 [ 1371.658474][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.658474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.658474][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.658474][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.658474][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.658474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.658474][ T72] [ 1371.660209][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1371.660524][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1371.660524][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.660524][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.660524][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.660524][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.660524][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.660524][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.660524][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.660524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.660524][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.660524][ T72] netlink_unicast+0x449/0x710 [ 1371.660524][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.660524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.660524][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.660524][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.660524][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.660524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.660524][ T72] [ 1371.662516][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1371.662516][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.662516][ T72] ipv6_find_idev+0x102/0x170 [ 1371.662516][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.662516][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.662516][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.662516][ T72] netlink_unicast+0x449/0x710 [ 1371.662516][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.662516][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.662516][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.662516][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.662516][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.662516][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.662516][ T72] [ 1371.664252][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1371.664252][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.664252][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.664252][ T72] ipv6_find_idev+0x102/0x170 [ 1371.664252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.664252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.664252][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.664252][ T72] netlink_unicast+0x449/0x710 [ 1371.664252][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.664252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.664252][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.664252][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.664252][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.664252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.664252][ T72] [ 1371.666290][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1371.666605][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1371.666605][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.666605][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.666605][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.666605][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.666605][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.666605][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.666605][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.666605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.666605][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.666605][ T72] netlink_unicast+0x449/0x710 [ 1371.666605][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.666605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.666605][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.666605][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.666605][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.666605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.666605][ T72] [ 1371.668772][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1371.668772][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.668772][ T72] ipv6_find_idev+0x102/0x170 [ 1371.668772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.668772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.668772][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.668772][ T72] netlink_unicast+0x449/0x710 [ 1371.668772][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.668772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.668772][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.668772][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.668772][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.668772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.668772][ T72] [ 1371.670491][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1371.670491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.670491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.670491][ T72] ipv6_find_idev+0x102/0x170 [ 1371.670491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.670491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.670491][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.670491][ T72] netlink_unicast+0x449/0x710 [ 1371.670491][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.670491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.670491][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.670491][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.670491][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.670491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.670491][ T72] [ 1371.672393][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1371.672729][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1371.672729][ T72] netdev_get_by_index+0x5e/0x80 [ 1371.672729][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1371.672729][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1371.672729][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1371.672729][ T72] ipv6_add_addr+0x411/0x2000 [ 1371.672729][ T72] inet6_addr_add+0x30e/0xa40 [ 1371.672729][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1371.672729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.672729][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.672729][ T72] netlink_unicast+0x449/0x710 [ 1371.672729][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.672729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.672729][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.672729][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.672729][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.672729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.672729][ T72] [ 1371.674904][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1371.674904][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1371.674904][ T72] ipv6_find_idev+0x102/0x170 [ 1371.674904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.674904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.674904][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.674904][ T72] netlink_unicast+0x449/0x710 [ 1371.674904][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.674904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.674904][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.674904][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.674904][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.674904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.674904][ T72] [ 1371.676679][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1371.676679][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1371.676679][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1371.676679][ T72] ipv6_find_idev+0x102/0x170 [ 1371.676679][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1371.676679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1371.676679][ T72] netlink_rcv_skb+0x130/0x360 [ 1371.676679][ T72] netlink_unicast+0x449/0x710 [ 1371.676679][ T72] netlink_sendmsg+0x723/0xbe0 [ 1371.676679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1371.676679][ T72] ___sys_sendmsg+0xee/0x170 [ 1371.676679][ T72] __sys_sendmsg+0xcd/0x170 [ 1371.676679][ T72] do_syscall_64+0xc6/0x1e0 [ 1371.676679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1371.676679][ T72] [ 1381.750833][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1381.751337][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1381.751337][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.751337][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.751337][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.751337][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.751337][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.751337][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.751337][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.751337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.751337][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.751337][ T72] netlink_unicast+0x449/0x710 [ 1381.751337][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.751337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.751337][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.751337][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.751337][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.751337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.751337][ T72] [ 1381.753337][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1381.753337][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.753337][ T72] ipv6_find_idev+0x102/0x170 [ 1381.753337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.753337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.753337][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.753337][ T72] netlink_unicast+0x449/0x710 [ 1381.753337][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.753337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.753337][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.753337][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.753337][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.753337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.753337][ T72] [ 1381.754917][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1381.754917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.754917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.754917][ T72] ipv6_find_idev+0x102/0x170 [ 1381.754917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.754917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.754917][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.754917][ T72] netlink_unicast+0x449/0x710 [ 1381.754917][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.754917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.754917][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.754917][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.754917][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.754917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.754917][ T72] [ 1381.756627][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1381.756909][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1381.756909][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.756909][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.756909][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.756909][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.756909][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.756909][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.756909][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.756909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.756909][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.756909][ T72] netlink_unicast+0x449/0x710 [ 1381.756909][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.756909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.756909][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.756909][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.756909][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.756909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.756909][ T72] [ 1381.758899][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1381.758899][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.758899][ T72] ipv6_find_idev+0x102/0x170 [ 1381.758899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.758899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.758899][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.758899][ T72] netlink_unicast+0x449/0x710 [ 1381.758899][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.758899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.758899][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.758899][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.758899][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.758899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.758899][ T72] [ 1381.760452][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1381.760452][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.760452][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.760452][ T72] ipv6_find_idev+0x102/0x170 [ 1381.760452][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.760452][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.760452][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.760452][ T72] netlink_unicast+0x449/0x710 [ 1381.760452][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.760452][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.760452][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.760452][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.760452][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.760452][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.760452][ T72] [ 1381.762140][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1381.762407][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1381.762407][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.762407][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.762407][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.762407][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.762407][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.762407][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.762407][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.762407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.762407][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.762407][ T72] netlink_unicast+0x449/0x710 [ 1381.762407][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.762407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.762407][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.762407][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.762407][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.762407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.762407][ T72] [ 1381.764397][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1381.764397][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.764397][ T72] ipv6_find_idev+0x102/0x170 [ 1381.764397][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.764397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.764397][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.764397][ T72] netlink_unicast+0x449/0x710 [ 1381.764397][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.764397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.764397][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.764397][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.764397][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.764397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.764397][ T72] [ 1381.765952][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1381.765952][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.765952][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.765952][ T72] ipv6_find_idev+0x102/0x170 [ 1381.765952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.765952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.765952][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.765952][ T72] netlink_unicast+0x449/0x710 [ 1381.765952][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.765952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.765952][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.765952][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.765952][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.765952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.765952][ T72] [ 1381.767634][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1381.768335][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1381.768335][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.768335][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.768335][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.768335][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.768335][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.768335][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.768335][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.768335][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.768335][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.768335][ T72] netlink_unicast+0x449/0x710 [ 1381.768335][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.768335][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.768335][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.768335][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.768335][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.768335][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.768335][ T72] [ 1381.770330][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1381.770330][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.770330][ T72] ipv6_find_idev+0x102/0x170 [ 1381.770330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.770330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.770330][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.770330][ T72] netlink_unicast+0x449/0x710 [ 1381.770330][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.770330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.770330][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.770330][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.770330][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.770330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.770330][ T72] [ 1381.772301][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1381.772301][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.772301][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.772301][ T72] ipv6_find_idev+0x102/0x170 [ 1381.772301][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.772301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.772301][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.772301][ T72] netlink_unicast+0x449/0x710 [ 1381.772301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.772301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.772301][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.772301][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.772301][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.772301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.772301][ T72] [ 1381.774051][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1381.774369][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1381.774369][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.774369][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.774369][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.774369][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.774369][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.774369][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.774369][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.774369][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.774369][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.774369][ T72] netlink_unicast+0x449/0x710 [ 1381.774369][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.774369][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.774369][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.774369][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.774369][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.774369][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.774369][ T72] [ 1381.776415][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1381.776415][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.776415][ T72] ipv6_find_idev+0x102/0x170 [ 1381.776415][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.776415][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.776415][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.776415][ T72] netlink_unicast+0x449/0x710 [ 1381.776415][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.776415][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.776415][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.776415][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.776415][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.776415][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.776415][ T72] [ 1381.777967][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1381.777967][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.777967][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.777967][ T72] ipv6_find_idev+0x102/0x170 [ 1381.777967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.777967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.777967][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.777967][ T72] netlink_unicast+0x449/0x710 [ 1381.777967][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.777967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.777967][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.777967][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.777967][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.777967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.777967][ T72] [ 1381.779708][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1381.780026][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1381.780026][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.780026][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.780026][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.780026][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.780026][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.780026][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.780026][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.780026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.780026][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.780026][ T72] netlink_unicast+0x449/0x710 [ 1381.780026][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.780026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.780026][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.780026][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.780026][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.780026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.780026][ T72] [ 1381.782028][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1381.782028][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.782028][ T72] ipv6_find_idev+0x102/0x170 [ 1381.782028][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.782028][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.782028][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.782028][ T72] netlink_unicast+0x449/0x710 [ 1381.782028][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.782028][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.782028][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.782028][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.782028][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.782028][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.782028][ T72] [ 1381.783750][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1381.783750][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.783750][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.783750][ T72] ipv6_find_idev+0x102/0x170 [ 1381.783750][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.783750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.783750][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.783750][ T72] netlink_unicast+0x449/0x710 [ 1381.783750][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.783750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.783750][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.783750][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.783750][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.783750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.783750][ T72] [ 1381.785783][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1381.786097][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1381.786097][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.786097][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.786097][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.786097][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.786097][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.786097][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.786097][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.786097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.786097][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.786097][ T72] netlink_unicast+0x449/0x710 [ 1381.786097][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.786097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.786097][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.786097][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.786097][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.786097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.786097][ T72] [ 1381.788279][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1381.788279][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.788279][ T72] ipv6_find_idev+0x102/0x170 [ 1381.788279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.788279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.788279][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.788279][ T72] netlink_unicast+0x449/0x710 [ 1381.788279][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.788279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.788279][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.788279][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.788279][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.788279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.788279][ T72] [ 1381.790008][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1381.790008][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.790008][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.790008][ T72] ipv6_find_idev+0x102/0x170 [ 1381.790008][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.790008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.790008][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.790008][ T72] netlink_unicast+0x449/0x710 [ 1381.790008][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.790008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.790008][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.790008][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.790008][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.790008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.790008][ T72] [ 1381.791914][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1381.792235][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1381.792235][ T72] netdev_get_by_index+0x5e/0x80 [ 1381.792235][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1381.792235][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1381.792235][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1381.792235][ T72] ipv6_add_addr+0x411/0x2000 [ 1381.792235][ T72] inet6_addr_add+0x30e/0xa40 [ 1381.792235][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1381.792235][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.792235][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.792235][ T72] netlink_unicast+0x449/0x710 [ 1381.792235][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.792235][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.792235][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.792235][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.792235][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.792235][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.792235][ T72] [ 1381.794417][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1381.794417][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1381.794417][ T72] ipv6_find_idev+0x102/0x170 [ 1381.794417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.794417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.794417][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.794417][ T72] netlink_unicast+0x449/0x710 [ 1381.794417][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.794417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.794417][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.794417][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.794417][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.794417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.794417][ T72] [ 1381.796147][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1381.796147][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1381.796147][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1381.796147][ T72] ipv6_find_idev+0x102/0x170 [ 1381.796147][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1381.796147][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1381.796147][ T72] netlink_rcv_skb+0x130/0x360 [ 1381.796147][ T72] netlink_unicast+0x449/0x710 [ 1381.796147][ T72] netlink_sendmsg+0x723/0xbe0 [ 1381.796147][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1381.796147][ T72] ___sys_sendmsg+0xee/0x170 [ 1381.796147][ T72] __sys_sendmsg+0xcd/0x170 [ 1381.796147][ T72] do_syscall_64+0xc6/0x1e0 [ 1381.796147][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1381.796147][ T72] [ 1392.038824][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1392.039232][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1392.039232][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.039232][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.039232][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.039232][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.039232][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.039232][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.039232][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.039232][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.039232][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.039232][ T72] netlink_unicast+0x449/0x710 [ 1392.039232][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.039232][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.039232][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.039232][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.039232][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.039232][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.039232][ T72] [ 1392.041313][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1392.041313][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.041313][ T72] ipv6_find_idev+0x102/0x170 [ 1392.041313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.041313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.041313][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.041313][ T72] netlink_unicast+0x449/0x710 [ 1392.041313][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.041313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.041313][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.041313][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.041313][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.041313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.041313][ T72] [ 1392.042857][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1392.042857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.042857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.042857][ T72] ipv6_find_idev+0x102/0x170 [ 1392.042857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.042857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.042857][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.042857][ T72] netlink_unicast+0x449/0x710 [ 1392.042857][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.042857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.042857][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.042857][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.042857][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.042857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.042857][ T72] [ 1392.044593][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1392.044902][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1392.044902][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.044902][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.044902][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.044902][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.044902][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.044902][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.044902][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.044902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.044902][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.044902][ T72] netlink_unicast+0x449/0x710 [ 1392.044902][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.044902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.044902][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.044902][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.044902][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.044902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.044902][ T72] [ 1392.046906][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1392.046906][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.046906][ T72] ipv6_find_idev+0x102/0x170 [ 1392.046906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.046906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.046906][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.046906][ T72] netlink_unicast+0x449/0x710 [ 1392.046906][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.046906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.046906][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.046906][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.046906][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.046906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.046906][ T72] [ 1392.048453][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1392.048453][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.048453][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.048453][ T72] ipv6_find_idev+0x102/0x170 [ 1392.048453][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.048453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.048453][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.048453][ T72] netlink_unicast+0x449/0x710 [ 1392.048453][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.048453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.048453][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.048453][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.048453][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.048453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.048453][ T72] [ 1392.050188][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1392.050463][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1392.050463][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.050463][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.050463][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.050463][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.050463][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.050463][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.050463][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.050463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.050463][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.050463][ T72] netlink_unicast+0x449/0x710 [ 1392.050463][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.050463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.050463][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.050463][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.050463][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.050463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.050463][ T72] [ 1392.052472][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1392.052472][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.052472][ T72] ipv6_find_idev+0x102/0x170 [ 1392.052472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.052472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.052472][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.052472][ T72] netlink_unicast+0x449/0x710 [ 1392.052472][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.052472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.052472][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.052472][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.052472][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.052472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.052472][ T72] [ 1392.054005][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1392.054005][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.054005][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.054005][ T72] ipv6_find_idev+0x102/0x170 [ 1392.054005][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.054005][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.054005][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.054005][ T72] netlink_unicast+0x449/0x710 [ 1392.054005][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.054005][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.054005][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.054005][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.054005][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.054005][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.054005][ T72] [ 1392.055697][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1392.056036][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1392.056036][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.056036][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.056036][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.056036][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.056036][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.056036][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.056036][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.056036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.056036][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.056036][ T72] netlink_unicast+0x449/0x710 [ 1392.056036][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.056036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.056036][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.056036][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.056036][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.056036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.056036][ T72] [ 1392.058044][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1392.058044][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.058044][ T72] ipv6_find_idev+0x102/0x170 [ 1392.058044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.058044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.058044][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.058044][ T72] netlink_unicast+0x449/0x710 [ 1392.058044][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.058044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.058044][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.058044][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.058044][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.058044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.058044][ T72] [ 1392.059596][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1392.059596][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.059596][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.059596][ T72] ipv6_find_idev+0x102/0x170 [ 1392.059596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.059596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.059596][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.059596][ T72] netlink_unicast+0x449/0x710 [ 1392.059596][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.059596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.059596][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.059596][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.059596][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.059596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.059596][ T72] [ 1392.061335][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1392.061646][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1392.061646][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.061646][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.061646][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.061646][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.061646][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.061646][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.061646][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.061646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.061646][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.061646][ T72] netlink_unicast+0x449/0x710 [ 1392.061646][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.061646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.061646][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.061646][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.061646][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.061646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.061646][ T72] [ 1392.063656][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1392.063656][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.063656][ T72] ipv6_find_idev+0x102/0x170 [ 1392.063656][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.063656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.063656][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.063656][ T72] netlink_unicast+0x449/0x710 [ 1392.063656][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.063656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.063656][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.063656][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.063656][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.063656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.063656][ T72] [ 1392.065209][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1392.065209][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.065209][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.065209][ T72] ipv6_find_idev+0x102/0x170 [ 1392.065209][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.065209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.065209][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.065209][ T72] netlink_unicast+0x449/0x710 [ 1392.065209][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.065209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.065209][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.065209][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.065209][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.065209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.065209][ T72] [ 1392.067138][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1392.067448][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1392.067448][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.067448][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.067448][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.067448][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.067448][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.067448][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.067448][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.067448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.067448][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.067448][ T72] netlink_unicast+0x449/0x710 [ 1392.067448][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.067448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.067448][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.067448][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.067448][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.067448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.067448][ T72] [ 1392.069633][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1392.069633][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.069633][ T72] ipv6_find_idev+0x102/0x170 [ 1392.069633][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.069633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.069633][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.069633][ T72] netlink_unicast+0x449/0x710 [ 1392.069633][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.069633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.069633][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.069633][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.069633][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.069633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.069633][ T72] [ 1392.071343][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1392.071343][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.071343][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.071343][ T72] ipv6_find_idev+0x102/0x170 [ 1392.071343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.071343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.071343][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.071343][ T72] netlink_unicast+0x449/0x710 [ 1392.071343][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.071343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.071343][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.071343][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.071343][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.071343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.071343][ T72] [ 1392.073308][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1392.073613][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1392.073613][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.073613][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.073613][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.073613][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.073613][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.073613][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.073613][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.073613][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.073613][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.073613][ T72] netlink_unicast+0x449/0x710 [ 1392.073613][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.073613][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.073613][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.073613][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.073613][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.073613][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.073613][ T72] [ 1392.075831][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1392.075831][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.075831][ T72] ipv6_find_idev+0x102/0x170 [ 1392.075831][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.075831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.075831][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.075831][ T72] netlink_unicast+0x449/0x710 [ 1392.075831][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.075831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.075831][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.075831][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.075831][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.075831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.075831][ T72] [ 1392.077554][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1392.077554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.077554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.077554][ T72] ipv6_find_idev+0x102/0x170 [ 1392.077554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.077554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.077554][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.077554][ T72] netlink_unicast+0x449/0x710 [ 1392.077554][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.077554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.077554][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.077554][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.077554][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.077554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.077554][ T72] [ 1392.079462][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1392.079774][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1392.079774][ T72] netdev_get_by_index+0x5e/0x80 [ 1392.079774][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1392.079774][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1392.079774][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1392.079774][ T72] ipv6_add_addr+0x411/0x2000 [ 1392.079774][ T72] inet6_addr_add+0x30e/0xa40 [ 1392.079774][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1392.079774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.079774][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.079774][ T72] netlink_unicast+0x449/0x710 [ 1392.079774][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.079774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.079774][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.079774][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.079774][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.079774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.079774][ T72] [ 1392.081942][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1392.081942][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1392.081942][ T72] ipv6_find_idev+0x102/0x170 [ 1392.081942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.081942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.081942][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.081942][ T72] netlink_unicast+0x449/0x710 [ 1392.081942][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.081942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.081942][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.081942][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.081942][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.081942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.081942][ T72] [ 1392.083737][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1392.083737][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1392.083737][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1392.083737][ T72] ipv6_find_idev+0x102/0x170 [ 1392.083737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1392.083737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1392.083737][ T72] netlink_rcv_skb+0x130/0x360 [ 1392.083737][ T72] netlink_unicast+0x449/0x710 [ 1392.083737][ T72] netlink_sendmsg+0x723/0xbe0 [ 1392.083737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1392.083737][ T72] ___sys_sendmsg+0xee/0x170 [ 1392.083737][ T72] __sys_sendmsg+0xcd/0x170 [ 1392.083737][ T72] do_syscall_64+0xc6/0x1e0 [ 1392.083737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1392.083737][ T72] [ 1402.326844][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1402.327256][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1402.327256][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.327256][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.327256][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.327256][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.327256][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.327256][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.327256][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.327256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.327256][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.327256][ T72] netlink_unicast+0x449/0x710 [ 1402.327256][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.327256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.327256][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.327256][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.327256][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.327256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.327256][ T72] [ 1402.329258][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1402.329258][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.329258][ T72] ipv6_find_idev+0x102/0x170 [ 1402.329258][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.329258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.329258][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.329258][ T72] netlink_unicast+0x449/0x710 [ 1402.329258][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.329258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.329258][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.329258][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.329258][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.329258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.329258][ T72] [ 1402.330812][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1402.330812][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.330812][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.330812][ T72] ipv6_find_idev+0x102/0x170 [ 1402.330812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.330812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.330812][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.330812][ T72] netlink_unicast+0x449/0x710 [ 1402.330812][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.330812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.330812][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.330812][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.330812][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.330812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.330812][ T72] [ 1402.332535][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1402.332822][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1402.332822][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.332822][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.332822][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.332822][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.332822][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.332822][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.332822][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.332822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.332822][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.332822][ T72] netlink_unicast+0x449/0x710 [ 1402.332822][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.332822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.332822][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.332822][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.332822][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.332822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.332822][ T72] [ 1402.334887][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1402.334887][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.334887][ T72] ipv6_find_idev+0x102/0x170 [ 1402.334887][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.334887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.334887][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.334887][ T72] netlink_unicast+0x449/0x710 [ 1402.334887][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.334887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.334887][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.334887][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.334887][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.334887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.334887][ T72] [ 1402.336429][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1402.336429][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.336429][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.336429][ T72] ipv6_find_idev+0x102/0x170 [ 1402.336429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.336429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.336429][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.336429][ T72] netlink_unicast+0x449/0x710 [ 1402.336429][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.336429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.336429][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.336429][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.336429][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.336429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.336429][ T72] [ 1402.338134][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1402.338399][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1402.338399][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.338399][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.338399][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.338399][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.338399][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.338399][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.338399][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.338399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.338399][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.338399][ T72] netlink_unicast+0x449/0x710 [ 1402.338399][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.338399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.338399][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.338399][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.338399][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.338399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.338399][ T72] [ 1402.340417][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1402.340417][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.340417][ T72] ipv6_find_idev+0x102/0x170 [ 1402.340417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.340417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.340417][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.340417][ T72] netlink_unicast+0x449/0x710 [ 1402.340417][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.340417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.340417][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.340417][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.340417][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.340417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.340417][ T72] [ 1402.341957][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1402.341957][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.341957][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.341957][ T72] ipv6_find_idev+0x102/0x170 [ 1402.341957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.341957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.341957][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.341957][ T72] netlink_unicast+0x449/0x710 [ 1402.341957][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.341957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.341957][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.341957][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.341957][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.341957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.341957][ T72] [ 1402.343638][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1402.344359][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1402.344359][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.344359][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.344359][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.344359][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.344359][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.344359][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.344359][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.344359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.344359][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.344359][ T72] netlink_unicast+0x449/0x710 [ 1402.344359][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.344359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.344359][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.344359][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.344359][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.344359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.344359][ T72] [ 1402.346358][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1402.346358][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.346358][ T72] ipv6_find_idev+0x102/0x170 [ 1402.346358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.346358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.346358][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.346358][ T72] netlink_unicast+0x449/0x710 [ 1402.346358][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.346358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.346358][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.346358][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.346358][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.346358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.346358][ T72] [ 1402.347898][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1402.347898][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.347898][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.347898][ T72] ipv6_find_idev+0x102/0x170 [ 1402.347898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.347898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.347898][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.347898][ T72] netlink_unicast+0x449/0x710 [ 1402.347898][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.347898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.347898][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.347898][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.347898][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.347898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.347898][ T72] [ 1402.349623][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1402.349998][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1402.349998][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.349998][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.349998][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.349998][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.349998][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.349998][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.349998][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.349998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.349998][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.349998][ T72] netlink_unicast+0x449/0x710 [ 1402.349998][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.349998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.349998][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.349998][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.349998][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.349998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.349998][ T72] [ 1402.352015][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1402.352015][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.352015][ T72] ipv6_find_idev+0x102/0x170 [ 1402.352015][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.352015][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.352015][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.352015][ T72] netlink_unicast+0x449/0x710 [ 1402.352015][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.352015][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.352015][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.352015][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.352015][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.352015][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.352015][ T72] [ 1402.353548][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1402.353548][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.353548][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.353548][ T72] ipv6_find_idev+0x102/0x170 [ 1402.353548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.353548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.353548][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.353548][ T72] netlink_unicast+0x449/0x710 [ 1402.353548][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.353548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.353548][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.353548][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.353548][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.353548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.353548][ T72] [ 1402.355296][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1402.355611][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1402.355611][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.355611][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.355611][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.355611][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.355611][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.355611][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.355611][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.355611][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.355611][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.355611][ T72] netlink_unicast+0x449/0x710 [ 1402.355611][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.355611][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.355611][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.355611][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.355611][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.355611][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.355611][ T72] [ 1402.357600][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1402.357600][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.357600][ T72] ipv6_find_idev+0x102/0x170 [ 1402.357600][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.357600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.357600][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.357600][ T72] netlink_unicast+0x449/0x710 [ 1402.357600][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.357600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.357600][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.357600][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.357600][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.357600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.357600][ T72] [ 1402.359328][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1402.359328][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.359328][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.359328][ T72] ipv6_find_idev+0x102/0x170 [ 1402.359328][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.359328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.359328][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.359328][ T72] netlink_unicast+0x449/0x710 [ 1402.359328][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.359328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.359328][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.359328][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.359328][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.359328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.359328][ T72] [ 1402.361349][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1402.361659][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1402.361659][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.361659][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.361659][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.361659][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.361659][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.361659][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.361659][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.361659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.361659][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.361659][ T72] netlink_unicast+0x449/0x710 [ 1402.361659][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.361659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.361659][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.361659][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.361659][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.361659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.361659][ T72] [ 1402.363844][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1402.363844][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.363844][ T72] ipv6_find_idev+0x102/0x170 [ 1402.363844][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.363844][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.363844][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.363844][ T72] netlink_unicast+0x449/0x710 [ 1402.363844][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.363844][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.363844][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.363844][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.363844][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.363844][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.363844][ T72] [ 1402.365570][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1402.365570][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.365570][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.365570][ T72] ipv6_find_idev+0x102/0x170 [ 1402.365570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.365570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.365570][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.365570][ T72] netlink_unicast+0x449/0x710 [ 1402.365570][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.365570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.365570][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.365570][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.365570][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.365570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.365570][ T72] [ 1402.367467][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1402.367783][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1402.367783][ T72] netdev_get_by_index+0x5e/0x80 [ 1402.367783][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1402.367783][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1402.367783][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1402.367783][ T72] ipv6_add_addr+0x411/0x2000 [ 1402.367783][ T72] inet6_addr_add+0x30e/0xa40 [ 1402.367783][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1402.367783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.367783][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.367783][ T72] netlink_unicast+0x449/0x710 [ 1402.367783][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.367783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.367783][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.367783][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.367783][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.367783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.367783][ T72] [ 1402.369998][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1402.369998][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1402.369998][ T72] ipv6_find_idev+0x102/0x170 [ 1402.369998][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.369998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.369998][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.369998][ T72] netlink_unicast+0x449/0x710 [ 1402.369998][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.369998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.369998][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.369998][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.369998][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.369998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.369998][ T72] [ 1402.371778][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1402.371778][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1402.371778][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1402.371778][ T72] ipv6_find_idev+0x102/0x170 [ 1402.371778][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1402.371778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1402.371778][ T72] netlink_rcv_skb+0x130/0x360 [ 1402.371778][ T72] netlink_unicast+0x449/0x710 [ 1402.371778][ T72] netlink_sendmsg+0x723/0xbe0 [ 1402.371778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1402.371778][ T72] ___sys_sendmsg+0xee/0x170 [ 1402.371778][ T72] __sys_sendmsg+0xcd/0x170 [ 1402.371778][ T72] do_syscall_64+0xc6/0x1e0 [ 1402.371778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1402.371778][ T72] [ 1412.614821][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1412.615259][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1412.615259][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.615259][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.615259][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.615259][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.615259][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.615259][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.615259][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.615259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.615259][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.615259][ T72] netlink_unicast+0x449/0x710 [ 1412.615259][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.615259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.615259][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.615259][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.615259][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.615259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.615259][ T72] [ 1412.617288][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1412.617288][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.617288][ T72] ipv6_find_idev+0x102/0x170 [ 1412.617288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.617288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.617288][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.617288][ T72] netlink_unicast+0x449/0x710 [ 1412.617288][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.617288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.617288][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.617288][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.617288][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.617288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.617288][ T72] [ 1412.618823][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1412.618823][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.618823][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.618823][ T72] ipv6_find_idev+0x102/0x170 [ 1412.618823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.618823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.618823][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.618823][ T72] netlink_unicast+0x449/0x710 [ 1412.618823][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.618823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.618823][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.618823][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.618823][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.618823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.618823][ T72] [ 1412.620517][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1412.620816][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1412.620816][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.620816][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.620816][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.620816][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.620816][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.620816][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.620816][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.620816][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.620816][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.620816][ T72] netlink_unicast+0x449/0x710 [ 1412.620816][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.620816][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.620816][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.620816][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.620816][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.620816][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.620816][ T72] [ 1412.622831][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1412.622831][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.622831][ T72] ipv6_find_idev+0x102/0x170 [ 1412.622831][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.622831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.622831][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.622831][ T72] netlink_unicast+0x449/0x710 [ 1412.622831][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.622831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.622831][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.622831][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.622831][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.622831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.622831][ T72] [ 1412.624389][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1412.624389][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.624389][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.624389][ T72] ipv6_find_idev+0x102/0x170 [ 1412.624389][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.624389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.624389][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.624389][ T72] netlink_unicast+0x449/0x710 [ 1412.624389][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.624389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.624389][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.624389][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.624389][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.624389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.624389][ T72] [ 1412.626075][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1412.626344][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1412.626344][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.626344][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.626344][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.626344][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.626344][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.626344][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.626344][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.626344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.626344][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.626344][ T72] netlink_unicast+0x449/0x710 [ 1412.626344][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.626344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.626344][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.626344][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.626344][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.626344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.626344][ T72] [ 1412.628343][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1412.628343][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.628343][ T72] ipv6_find_idev+0x102/0x170 [ 1412.628343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.628343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.628343][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.628343][ T72] netlink_unicast+0x449/0x710 [ 1412.628343][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.628343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.628343][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.628343][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.628343][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.628343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.628343][ T72] [ 1412.629871][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1412.629871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.629871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.629871][ T72] ipv6_find_idev+0x102/0x170 [ 1412.629871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.629871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.629871][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.629871][ T72] netlink_unicast+0x449/0x710 [ 1412.629871][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.629871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.629871][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.629871][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.629871][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.629871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.629871][ T72] [ 1412.631558][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1412.632253][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1412.632253][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.632253][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.632253][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.632253][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.632253][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.632253][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.632253][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.632253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.632253][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.632253][ T72] netlink_unicast+0x449/0x710 [ 1412.632253][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.632253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.632253][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.632253][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.632253][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.632253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.632253][ T72] [ 1412.634237][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1412.634237][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.634237][ T72] ipv6_find_idev+0x102/0x170 [ 1412.634237][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.634237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.634237][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.634237][ T72] netlink_unicast+0x449/0x710 [ 1412.634237][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.634237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.634237][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.634237][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.634237][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.634237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.634237][ T72] [ 1412.635813][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1412.635813][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.635813][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.635813][ T72] ipv6_find_idev+0x102/0x170 [ 1412.635813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.635813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.635813][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.635813][ T72] netlink_unicast+0x449/0x710 [ 1412.635813][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.635813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.635813][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.635813][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.635813][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.635813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.635813][ T72] [ 1412.637548][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1412.637868][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1412.637868][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.637868][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.637868][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.637868][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.637868][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.637868][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.637868][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.637868][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.637868][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.637868][ T72] netlink_unicast+0x449/0x710 [ 1412.637868][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.637868][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.637868][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.637868][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.637868][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.637868][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.637868][ T72] [ 1412.639859][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1412.639859][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.639859][ T72] ipv6_find_idev+0x102/0x170 [ 1412.639859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.639859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.639859][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.639859][ T72] netlink_unicast+0x449/0x710 [ 1412.639859][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.639859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.639859][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.639859][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.639859][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.639859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.639859][ T72] [ 1412.641488][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1412.641488][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.641488][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.641488][ T72] ipv6_find_idev+0x102/0x170 [ 1412.641488][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.641488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.641488][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.641488][ T72] netlink_unicast+0x449/0x710 [ 1412.641488][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.641488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.641488][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.641488][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.641488][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.641488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.641488][ T72] [ 1412.643231][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1412.643553][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1412.643553][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.643553][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.643553][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.643553][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.643553][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.643553][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.643553][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.643553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.643553][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.643553][ T72] netlink_unicast+0x449/0x710 [ 1412.643553][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.643553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.643553][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.643553][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.643553][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.643553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.643553][ T72] [ 1412.645564][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1412.645564][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.645564][ T72] ipv6_find_idev+0x102/0x170 [ 1412.645564][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.645564][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.645564][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.645564][ T72] netlink_unicast+0x449/0x710 [ 1412.645564][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.645564][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.645564][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.645564][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.645564][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.645564][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.645564][ T72] [ 1412.647282][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1412.647282][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.647282][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.647282][ T72] ipv6_find_idev+0x102/0x170 [ 1412.647282][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.647282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.647282][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.647282][ T72] netlink_unicast+0x449/0x710 [ 1412.647282][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.647282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.647282][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.647282][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.647282][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.647282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.647282][ T72] [ 1412.649292][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1412.649607][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1412.649607][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.649607][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.649607][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.649607][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.649607][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.649607][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.649607][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.649607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.649607][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.649607][ T72] netlink_unicast+0x449/0x710 [ 1412.649607][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.649607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.649607][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.649607][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.649607][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.649607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.649607][ T72] [ 1412.651782][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1412.651782][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.651782][ T72] ipv6_find_idev+0x102/0x170 [ 1412.651782][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.651782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.651782][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.651782][ T72] netlink_unicast+0x449/0x710 [ 1412.651782][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.651782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.651782][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.651782][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.651782][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.651782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.651782][ T72] [ 1412.653497][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1412.653497][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.653497][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.653497][ T72] ipv6_find_idev+0x102/0x170 [ 1412.653497][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.653497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.653497][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.653497][ T72] netlink_unicast+0x449/0x710 [ 1412.653497][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.653497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.653497][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.653497][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.653497][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.653497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.653497][ T72] [ 1412.655428][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1412.655747][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1412.655747][ T72] netdev_get_by_index+0x5e/0x80 [ 1412.655747][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1412.655747][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1412.655747][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1412.655747][ T72] ipv6_add_addr+0x411/0x2000 [ 1412.655747][ T72] inet6_addr_add+0x30e/0xa40 [ 1412.655747][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1412.655747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.655747][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.655747][ T72] netlink_unicast+0x449/0x710 [ 1412.655747][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.655747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.655747][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.655747][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.655747][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.655747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.655747][ T72] [ 1412.657925][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1412.657925][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1412.657925][ T72] ipv6_find_idev+0x102/0x170 [ 1412.657925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.657925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.657925][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.657925][ T72] netlink_unicast+0x449/0x710 [ 1412.657925][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.657925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.657925][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.657925][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.657925][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.657925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.657925][ T72] [ 1412.659667][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1412.659667][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1412.659667][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1412.659667][ T72] ipv6_find_idev+0x102/0x170 [ 1412.659667][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1412.659667][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1412.659667][ T72] netlink_rcv_skb+0x130/0x360 [ 1412.659667][ T72] netlink_unicast+0x449/0x710 [ 1412.659667][ T72] netlink_sendmsg+0x723/0xbe0 [ 1412.659667][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1412.659667][ T72] ___sys_sendmsg+0xee/0x170 [ 1412.659667][ T72] __sys_sendmsg+0xcd/0x170 [ 1412.659667][ T72] do_syscall_64+0xc6/0x1e0 [ 1412.659667][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1412.659667][ T72] [ 1422.902896][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1422.903323][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1422.903323][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.903323][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.903323][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.903323][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.903323][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.903323][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.903323][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.903323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.903323][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.903323][ T72] netlink_unicast+0x449/0x710 [ 1422.903323][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.903323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.903323][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.903323][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.903323][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.903323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.903323][ T72] [ 1422.905368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1422.905368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.905368][ T72] ipv6_find_idev+0x102/0x170 [ 1422.905368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.905368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.905368][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.905368][ T72] netlink_unicast+0x449/0x710 [ 1422.905368][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.905368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.905368][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.905368][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.905368][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.905368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.905368][ T72] [ 1422.906910][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1422.906910][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.906910][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.906910][ T72] ipv6_find_idev+0x102/0x170 [ 1422.906910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.906910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.906910][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.906910][ T72] netlink_unicast+0x449/0x710 [ 1422.906910][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.906910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.906910][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.906910][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.906910][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.906910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.906910][ T72] [ 1422.908626][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1422.908942][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1422.908942][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.908942][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.908942][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.908942][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.908942][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.908942][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.908942][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.908942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.908942][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.908942][ T72] netlink_unicast+0x449/0x710 [ 1422.908942][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.908942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.908942][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.908942][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.908942][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.908942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.908942][ T72] [ 1422.910986][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1422.910986][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.910986][ T72] ipv6_find_idev+0x102/0x170 [ 1422.910986][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.910986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.910986][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.910986][ T72] netlink_unicast+0x449/0x710 [ 1422.910986][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.910986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.910986][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.910986][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.910986][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.910986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.910986][ T72] [ 1422.912521][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1422.912521][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.912521][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.912521][ T72] ipv6_find_idev+0x102/0x170 [ 1422.912521][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.912521][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.912521][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.912521][ T72] netlink_unicast+0x449/0x710 [ 1422.912521][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.912521][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.912521][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.912521][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.912521][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.912521][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.912521][ T72] [ 1422.914217][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1422.914570][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1422.914570][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.914570][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.914570][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.914570][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.914570][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.914570][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.914570][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.914570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.914570][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.914570][ T72] netlink_unicast+0x449/0x710 [ 1422.914570][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.914570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.914570][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.914570][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.914570][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.914570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.914570][ T72] [ 1422.916568][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1422.916568][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.916568][ T72] ipv6_find_idev+0x102/0x170 [ 1422.916568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.916568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.916568][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.916568][ T72] netlink_unicast+0x449/0x710 [ 1422.916568][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.916568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.916568][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.916568][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.916568][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.916568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.916568][ T72] [ 1422.918104][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1422.918104][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.918104][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.918104][ T72] ipv6_find_idev+0x102/0x170 [ 1422.918104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.918104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.918104][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.918104][ T72] netlink_unicast+0x449/0x710 [ 1422.918104][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.918104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.918104][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.918104][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.918104][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.918104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.918104][ T72] [ 1422.919792][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1422.920070][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1422.920070][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.920070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.920070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.920070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.920070][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.920070][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.920070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.920070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.920070][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.920070][ T72] netlink_unicast+0x449/0x710 [ 1422.920070][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.920070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.920070][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.920070][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.920070][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.920070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.920070][ T72] [ 1422.922056][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1422.922056][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.922056][ T72] ipv6_find_idev+0x102/0x170 [ 1422.922056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.922056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.922056][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.922056][ T72] netlink_unicast+0x449/0x710 [ 1422.922056][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.922056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.922056][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.922056][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.922056][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.922056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.922056][ T72] [ 1422.923591][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1422.923591][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.923591][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.923591][ T72] ipv6_find_idev+0x102/0x170 [ 1422.923591][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.923591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.923591][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.923591][ T72] netlink_unicast+0x449/0x710 [ 1422.923591][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.923591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.923591][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.923591][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.923591][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.923591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.923591][ T72] [ 1422.925693][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1422.926301][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1422.926301][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.926301][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.926301][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.926301][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.926301][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.926301][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.926301][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.926301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.926301][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.926301][ T72] netlink_unicast+0x449/0x710 [ 1422.926301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.926301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.926301][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.926301][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.926301][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.926301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.926301][ T72] [ 1422.928312][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1422.928312][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.928312][ T72] ipv6_find_idev+0x102/0x170 [ 1422.928312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.928312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.928312][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.928312][ T72] netlink_unicast+0x449/0x710 [ 1422.928312][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.928312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.928312][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.928312][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.928312][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.928312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.928312][ T72] [ 1422.929863][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1422.929863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.929863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.929863][ T72] ipv6_find_idev+0x102/0x170 [ 1422.929863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.929863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.929863][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.929863][ T72] netlink_unicast+0x449/0x710 [ 1422.929863][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.929863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.929863][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.929863][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.929863][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.929863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.929863][ T72] [ 1422.932048][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1422.932331][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1422.932331][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.932331][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.932331][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.932331][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.932331][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.932331][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.932331][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.932331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.932331][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.932331][ T72] netlink_unicast+0x449/0x710 [ 1422.932331][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.932331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.932331][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.932331][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.932331][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.932331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.932331][ T72] [ 1422.934349][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1422.934349][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.934349][ T72] ipv6_find_idev+0x102/0x170 [ 1422.934349][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.934349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.934349][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.934349][ T72] netlink_unicast+0x449/0x710 [ 1422.934349][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.934349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.934349][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.934349][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.934349][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.934349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.934349][ T72] [ 1422.935939][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1422.935939][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.935939][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.935939][ T72] ipv6_find_idev+0x102/0x170 [ 1422.935939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.935939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.935939][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.935939][ T72] netlink_unicast+0x449/0x710 [ 1422.935939][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.935939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.935939][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.935939][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.935939][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.935939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.935939][ T72] [ 1422.937837][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1422.938144][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1422.938144][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.938144][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.938144][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.938144][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.938144][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.938144][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.938144][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.938144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.938144][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.938144][ T72] netlink_unicast+0x449/0x710 [ 1422.938144][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.938144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.938144][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.938144][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.938144][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.938144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.938144][ T72] [ 1422.940706][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1422.940706][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.940706][ T72] ipv6_find_idev+0x102/0x170 [ 1422.940706][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.940706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.940706][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.940706][ T72] netlink_unicast+0x449/0x710 [ 1422.940706][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.940706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.940706][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.940706][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.940706][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.940706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.940706][ T72] [ 1422.942472][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1422.942472][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.942472][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.942472][ T72] ipv6_find_idev+0x102/0x170 [ 1422.942472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.942472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.942472][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.942472][ T72] netlink_unicast+0x449/0x710 [ 1422.942472][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.942472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.942472][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.942472][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.942472][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.942472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.942472][ T72] [ 1422.944504][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1422.944835][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1422.944835][ T72] netdev_get_by_index+0x5e/0x80 [ 1422.944835][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1422.944835][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1422.944835][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1422.944835][ T72] ipv6_add_addr+0x411/0x2000 [ 1422.944835][ T72] inet6_addr_add+0x30e/0xa40 [ 1422.944835][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1422.944835][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.944835][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.944835][ T72] netlink_unicast+0x449/0x710 [ 1422.944835][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.944835][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.944835][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.944835][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.944835][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.944835][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.944835][ T72] [ 1422.947019][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1422.947019][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1422.947019][ T72] ipv6_find_idev+0x102/0x170 [ 1422.947019][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.947019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.947019][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.947019][ T72] netlink_unicast+0x449/0x710 [ 1422.947019][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.947019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.947019][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.947019][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.947019][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.947019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.947019][ T72] [ 1422.948740][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1422.948740][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1422.948740][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1422.948740][ T72] ipv6_find_idev+0x102/0x170 [ 1422.948740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1422.948740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1422.948740][ T72] netlink_rcv_skb+0x130/0x360 [ 1422.948740][ T72] netlink_unicast+0x449/0x710 [ 1422.948740][ T72] netlink_sendmsg+0x723/0xbe0 [ 1422.948740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1422.948740][ T72] ___sys_sendmsg+0xee/0x170 [ 1422.948740][ T72] __sys_sendmsg+0xcd/0x170 [ 1422.948740][ T72] do_syscall_64+0xc6/0x1e0 [ 1422.948740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1422.948740][ T72] [ 1433.190931][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1433.191356][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1433.191356][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.191356][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.191356][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.191356][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.191356][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.191356][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.191356][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.191356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.191356][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.191356][ T72] netlink_unicast+0x449/0x710 [ 1433.191356][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.191356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.191356][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.191356][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.191356][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.191356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.191356][ T72] [ 1433.193360][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1433.193360][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.193360][ T72] ipv6_find_idev+0x102/0x170 [ 1433.193360][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.193360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.193360][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.193360][ T72] netlink_unicast+0x449/0x710 [ 1433.193360][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.193360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.193360][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.193360][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.193360][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.193360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.193360][ T72] [ 1433.194912][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1433.194912][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.194912][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.194912][ T72] ipv6_find_idev+0x102/0x170 [ 1433.194912][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.194912][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.194912][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.194912][ T72] netlink_unicast+0x449/0x710 [ 1433.194912][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.194912][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.194912][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.194912][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.194912][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.194912][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.194912][ T72] [ 1433.196610][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1433.196930][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1433.196930][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.196930][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.196930][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.196930][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.196930][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.196930][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.196930][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.196930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.196930][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.196930][ T72] netlink_unicast+0x449/0x710 [ 1433.196930][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.196930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.196930][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.196930][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.196930][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.196930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.196930][ T72] [ 1433.198950][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1433.198950][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.198950][ T72] ipv6_find_idev+0x102/0x170 [ 1433.198950][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.198950][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.198950][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.198950][ T72] netlink_unicast+0x449/0x710 [ 1433.198950][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.198950][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.198950][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.198950][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.198950][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.198950][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.198950][ T72] [ 1433.200487][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1433.200487][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.200487][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.200487][ T72] ipv6_find_idev+0x102/0x170 [ 1433.200487][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.200487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.200487][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.200487][ T72] netlink_unicast+0x449/0x710 [ 1433.200487][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.200487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.200487][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.200487][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.200487][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.200487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.200487][ T72] [ 1433.202161][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1433.202440][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1433.202440][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.202440][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.202440][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.202440][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.202440][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.202440][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.202440][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.202440][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.202440][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.202440][ T72] netlink_unicast+0x449/0x710 [ 1433.202440][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.202440][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.202440][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.202440][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.202440][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.202440][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.202440][ T72] [ 1433.204428][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1433.204428][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.204428][ T72] ipv6_find_idev+0x102/0x170 [ 1433.204428][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.204428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.204428][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.204428][ T72] netlink_unicast+0x449/0x710 [ 1433.204428][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.204428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.204428][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.204428][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.204428][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.204428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.204428][ T72] [ 1433.205965][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1433.205965][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.205965][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.205965][ T72] ipv6_find_idev+0x102/0x170 [ 1433.205965][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.205965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.205965][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.205965][ T72] netlink_unicast+0x449/0x710 [ 1433.205965][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.205965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.205965][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.205965][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.205965][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.205965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.205965][ T72] [ 1433.207654][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1433.208001][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1433.208001][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.208001][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.208001][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.208001][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.208001][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.208001][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.208001][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.208001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.208001][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.208001][ T72] netlink_unicast+0x449/0x710 [ 1433.208001][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.208001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.208001][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.208001][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.208001][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.208001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.208001][ T72] [ 1433.209997][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1433.209997][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.209997][ T72] ipv6_find_idev+0x102/0x170 [ 1433.209997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.209997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.209997][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.209997][ T72] netlink_unicast+0x449/0x710 [ 1433.209997][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.209997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.209997][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.209997][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.209997][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.209997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.209997][ T72] [ 1433.211532][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1433.211532][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.211532][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.211532][ T72] ipv6_find_idev+0x102/0x170 [ 1433.211532][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.211532][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.211532][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.211532][ T72] netlink_unicast+0x449/0x710 [ 1433.211532][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.211532][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.211532][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.211532][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.211532][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.211532][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.211532][ T72] [ 1433.213247][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1433.213555][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1433.213555][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.213555][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.213555][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.213555][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.213555][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.213555][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.213555][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.213555][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.213555][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.213555][ T72] netlink_unicast+0x449/0x710 [ 1433.213555][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.213555][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.213555][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.213555][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.213555][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.213555][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.213555][ T72] [ 1433.215543][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1433.215543][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.215543][ T72] ipv6_find_idev+0x102/0x170 [ 1433.215543][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.215543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.215543][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.215543][ T72] netlink_unicast+0x449/0x710 [ 1433.215543][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.215543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.215543][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.215543][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.215543][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.215543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.215543][ T72] [ 1433.217158][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1433.217158][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.217158][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.217158][ T72] ipv6_find_idev+0x102/0x170 [ 1433.217158][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.217158][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.217158][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.217158][ T72] netlink_unicast+0x449/0x710 [ 1433.217158][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.217158][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.217158][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.217158][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.217158][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.217158][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.217158][ T72] [ 1433.219045][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1433.219353][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1433.219353][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.219353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.219353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.219353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.219353][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.219353][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.219353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.219353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.219353][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.219353][ T72] netlink_unicast+0x449/0x710 [ 1433.219353][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.219353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.219353][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.219353][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.219353][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.219353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.219353][ T72] [ 1433.221578][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1433.221578][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.221578][ T72] ipv6_find_idev+0x102/0x170 [ 1433.221578][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.221578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.221578][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.221578][ T72] netlink_unicast+0x449/0x710 [ 1433.221578][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.221578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.221578][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.221578][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.221578][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.221578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.221578][ T72] [ 1433.223279][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1433.223279][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.223279][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.223279][ T72] ipv6_find_idev+0x102/0x170 [ 1433.223279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.223279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.223279][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.223279][ T72] netlink_unicast+0x449/0x710 [ 1433.223279][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.223279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.223279][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.223279][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.223279][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.223279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.223279][ T72] [ 1433.225178][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1433.225484][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1433.225484][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.225484][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.225484][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.225484][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.225484][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.225484][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.225484][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.225484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.225484][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.225484][ T72] netlink_unicast+0x449/0x710 [ 1433.225484][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.225484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.225484][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.225484][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.225484][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.225484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.225484][ T72] [ 1433.227644][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1433.227644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.227644][ T72] ipv6_find_idev+0x102/0x170 [ 1433.227644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.227644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.227644][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.227644][ T72] netlink_unicast+0x449/0x710 [ 1433.227644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.227644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.227644][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.227644][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.227644][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.227644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.227644][ T72] [ 1433.229346][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1433.229346][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.229346][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.229346][ T72] ipv6_find_idev+0x102/0x170 [ 1433.229346][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.229346][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.229346][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.229346][ T72] netlink_unicast+0x449/0x710 [ 1433.229346][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.229346][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.229346][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.229346][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.229346][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.229346][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.229346][ T72] [ 1433.231309][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1433.231614][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1433.231614][ T72] netdev_get_by_index+0x5e/0x80 [ 1433.231614][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1433.231614][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1433.231614][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1433.231614][ T72] ipv6_add_addr+0x411/0x2000 [ 1433.231614][ T72] inet6_addr_add+0x30e/0xa40 [ 1433.231614][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1433.231614][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.231614][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.231614][ T72] netlink_unicast+0x449/0x710 [ 1433.231614][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.231614][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.231614][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.231614][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.231614][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.231614][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.231614][ T72] [ 1433.233776][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1433.233776][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1433.233776][ T72] ipv6_find_idev+0x102/0x170 [ 1433.233776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.233776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.233776][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.233776][ T72] netlink_unicast+0x449/0x710 [ 1433.233776][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.233776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.233776][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.233776][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.233776][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.233776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.233776][ T72] [ 1433.235490][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1433.235490][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1433.235490][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1433.235490][ T72] ipv6_find_idev+0x102/0x170 [ 1433.235490][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1433.235490][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1433.235490][ T72] netlink_rcv_skb+0x130/0x360 [ 1433.235490][ T72] netlink_unicast+0x449/0x710 [ 1433.235490][ T72] netlink_sendmsg+0x723/0xbe0 [ 1433.235490][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1433.235490][ T72] ___sys_sendmsg+0xee/0x170 [ 1433.235490][ T72] __sys_sendmsg+0xcd/0x170 [ 1433.235490][ T72] do_syscall_64+0xc6/0x1e0 [ 1433.235490][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1433.235490][ T72] [ 1443.478874][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1443.479332][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1443.479332][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.479332][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.479332][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.479332][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.479332][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.479332][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.479332][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.479332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.479332][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.479332][ T72] netlink_unicast+0x449/0x710 [ 1443.479332][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.479332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.479332][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.479332][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.479332][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.479332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.479332][ T72] [ 1443.481310][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1443.481310][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.481310][ T72] ipv6_find_idev+0x102/0x170 [ 1443.481310][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.481310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.481310][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.481310][ T72] netlink_unicast+0x449/0x710 [ 1443.481310][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.481310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.481310][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.481310][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.481310][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.481310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.481310][ T72] [ 1443.482824][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1443.482824][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.482824][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.482824][ T72] ipv6_find_idev+0x102/0x170 [ 1443.482824][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.482824][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.482824][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.482824][ T72] netlink_unicast+0x449/0x710 [ 1443.482824][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.482824][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.482824][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.482824][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.482824][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.482824][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.482824][ T72] [ 1443.484500][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1443.484782][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1443.484782][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.484782][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.484782][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.484782][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.484782][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.484782][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.484782][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.484782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.484782][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.484782][ T72] netlink_unicast+0x449/0x710 [ 1443.484782][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.484782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.484782][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.484782][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.484782][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.484782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.484782][ T72] [ 1443.486737][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1443.486737][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.486737][ T72] ipv6_find_idev+0x102/0x170 [ 1443.486737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.486737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.486737][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.486737][ T72] netlink_unicast+0x449/0x710 [ 1443.486737][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.486737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.486737][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.486737][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.486737][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.486737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.486737][ T72] [ 1443.488274][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1443.488274][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.488274][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.488274][ T72] ipv6_find_idev+0x102/0x170 [ 1443.488274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.488274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.488274][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.488274][ T72] netlink_unicast+0x449/0x710 [ 1443.488274][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.488274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.488274][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.488274][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.488274][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.488274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.488274][ T72] [ 1443.489923][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1443.490184][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1443.490184][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.490184][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.490184][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.490184][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.490184][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.490184][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.490184][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.490184][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.490184][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.490184][ T72] netlink_unicast+0x449/0x710 [ 1443.490184][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.490184][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.490184][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.490184][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.490184][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.490184][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.490184][ T72] [ 1443.492140][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1443.492140][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.492140][ T72] ipv6_find_idev+0x102/0x170 [ 1443.492140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.492140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.492140][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.492140][ T72] netlink_unicast+0x449/0x710 [ 1443.492140][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.492140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.492140][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.492140][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.492140][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.492140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.492140][ T72] [ 1443.493649][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1443.493649][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.493649][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.493649][ T72] ipv6_find_idev+0x102/0x170 [ 1443.493649][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.493649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.493649][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.493649][ T72] netlink_unicast+0x449/0x710 [ 1443.493649][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.493649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.493649][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.493649][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.493649][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.493649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.493649][ T72] [ 1443.495311][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1443.495568][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1443.495568][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.495568][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.495568][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.495568][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.495568][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.495568][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.495568][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.495568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.495568][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.495568][ T72] netlink_unicast+0x449/0x710 [ 1443.495568][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.495568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.495568][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.495568][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.495568][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.495568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.495568][ T72] [ 1443.497524][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1443.497524][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.497524][ T72] ipv6_find_idev+0x102/0x170 [ 1443.497524][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.497524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.497524][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.497524][ T72] netlink_unicast+0x449/0x710 [ 1443.497524][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.497524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.497524][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.497524][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.497524][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.497524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.497524][ T72] [ 1443.499028][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1443.499028][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.499028][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.499028][ T72] ipv6_find_idev+0x102/0x170 [ 1443.499028][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.499028][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.499028][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.499028][ T72] netlink_unicast+0x449/0x710 [ 1443.499028][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.499028][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.499028][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.499028][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.499028][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.499028][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.499028][ T72] [ 1443.500676][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1443.500994][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1443.500994][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.500994][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.500994][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.500994][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.500994][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.500994][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.500994][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.500994][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.500994][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.500994][ T72] netlink_unicast+0x449/0x710 [ 1443.500994][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.500994][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.500994][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.500994][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.500994][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.500994][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.500994][ T72] [ 1443.502995][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1443.502995][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.502995][ T72] ipv6_find_idev+0x102/0x170 [ 1443.502995][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.502995][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.502995][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.502995][ T72] netlink_unicast+0x449/0x710 [ 1443.502995][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.502995][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.502995][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.502995][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.502995][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.502995][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.502995][ T72] [ 1443.504505][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1443.504505][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.504505][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.504505][ T72] ipv6_find_idev+0x102/0x170 [ 1443.504505][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.504505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.504505][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.504505][ T72] netlink_unicast+0x449/0x710 [ 1443.504505][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.504505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.504505][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.504505][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.504505][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.504505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.504505][ T72] [ 1443.506375][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1443.506631][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1443.506631][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.506631][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.506631][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.506631][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.506631][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.506631][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.506631][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.506631][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.506631][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.506631][ T72] netlink_unicast+0x449/0x710 [ 1443.506631][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.506631][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.506631][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.506631][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.506631][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.506631][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.506631][ T72] [ 1443.508838][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1443.508838][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.508838][ T72] ipv6_find_idev+0x102/0x170 [ 1443.508838][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.508838][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.508838][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.508838][ T72] netlink_unicast+0x449/0x710 [ 1443.508838][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.508838][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.508838][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.508838][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.508838][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.508838][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.508838][ T72] [ 1443.510528][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1443.510528][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.510528][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.510528][ T72] ipv6_find_idev+0x102/0x170 [ 1443.510528][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.510528][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.510528][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.510528][ T72] netlink_unicast+0x449/0x710 [ 1443.510528][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.510528][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.510528][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.510528][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.510528][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.510528][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.510528][ T72] [ 1443.512454][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1443.512742][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1443.512742][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.512742][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.512742][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.512742][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.512742][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.512742][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.512742][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.512742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.512742][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.512742][ T72] netlink_unicast+0x449/0x710 [ 1443.512742][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.512742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.512742][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.512742][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.512742][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.512742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.512742][ T72] [ 1443.514895][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1443.514895][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.514895][ T72] ipv6_find_idev+0x102/0x170 [ 1443.514895][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.514895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.514895][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.514895][ T72] netlink_unicast+0x449/0x710 [ 1443.514895][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.514895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.514895][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.514895][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.514895][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.514895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.514895][ T72] [ 1443.516578][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1443.516578][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.516578][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.516578][ T72] ipv6_find_idev+0x102/0x170 [ 1443.516578][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.516578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.516578][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.516578][ T72] netlink_unicast+0x449/0x710 [ 1443.516578][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.516578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.516578][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.516578][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.516578][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.516578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.516578][ T72] [ 1443.518513][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1443.518771][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1443.518771][ T72] netdev_get_by_index+0x5e/0x80 [ 1443.518771][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1443.518771][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1443.518771][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1443.518771][ T72] ipv6_add_addr+0x411/0x2000 [ 1443.518771][ T72] inet6_addr_add+0x30e/0xa40 [ 1443.518771][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1443.518771][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.518771][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.518771][ T72] netlink_unicast+0x449/0x710 [ 1443.518771][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.518771][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.518771][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.518771][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.518771][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.518771][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.518771][ T72] [ 1443.520847][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1443.520847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1443.520847][ T72] ipv6_find_idev+0x102/0x170 [ 1443.520847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.520847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.520847][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.520847][ T72] netlink_unicast+0x449/0x710 [ 1443.520847][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.520847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.520847][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.520847][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.520847][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.520847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.520847][ T72] [ 1443.522470][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1443.522470][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1443.522470][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1443.522470][ T72] ipv6_find_idev+0x102/0x170 [ 1443.522470][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1443.522470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1443.522470][ T72] netlink_rcv_skb+0x130/0x360 [ 1443.522470][ T72] netlink_unicast+0x449/0x710 [ 1443.522470][ T72] netlink_sendmsg+0x723/0xbe0 [ 1443.522470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1443.522470][ T72] ___sys_sendmsg+0xee/0x170 [ 1443.522470][ T72] __sys_sendmsg+0xcd/0x170 [ 1443.522470][ T72] do_syscall_64+0xc6/0x1e0 [ 1443.522470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1443.522470][ T72] [ 1453.766856][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1453.767380][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1453.767380][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.767380][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.767380][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.767380][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.767380][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.767380][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.767380][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.767380][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.767380][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.767380][ T72] netlink_unicast+0x449/0x710 [ 1453.767380][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.767380][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.767380][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.767380][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.767380][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.767380][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.767380][ T72] [ 1453.769396][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1453.769396][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.769396][ T72] ipv6_find_idev+0x102/0x170 [ 1453.769396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.769396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.769396][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.769396][ T72] netlink_unicast+0x449/0x710 [ 1453.769396][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.769396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.769396][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.769396][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.769396][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.769396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.769396][ T72] [ 1453.770924][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1453.770924][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.770924][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.770924][ T72] ipv6_find_idev+0x102/0x170 [ 1453.770924][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.770924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.770924][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.770924][ T72] netlink_unicast+0x449/0x710 [ 1453.770924][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.770924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.770924][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.770924][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.770924][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.770924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.770924][ T72] [ 1453.772666][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1453.772980][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1453.772980][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.772980][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.772980][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.772980][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.772980][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.772980][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.772980][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.772980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.772980][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.772980][ T72] netlink_unicast+0x449/0x710 [ 1453.772980][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.772980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.772980][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.772980][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.772980][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.772980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.772980][ T72] [ 1453.774980][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1453.774980][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.774980][ T72] ipv6_find_idev+0x102/0x170 [ 1453.774980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.774980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.774980][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.774980][ T72] netlink_unicast+0x449/0x710 [ 1453.774980][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.774980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.774980][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.774980][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.774980][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.774980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.774980][ T72] [ 1453.776520][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1453.776520][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.776520][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.776520][ T72] ipv6_find_idev+0x102/0x170 [ 1453.776520][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.776520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.776520][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.776520][ T72] netlink_unicast+0x449/0x710 [ 1453.776520][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.776520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.776520][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.776520][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.776520][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.776520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.776520][ T72] [ 1453.778654][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1453.779057][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1453.779057][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.779057][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.779057][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.779057][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.779057][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.779057][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.779057][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.779057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.779057][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.779057][ T72] netlink_unicast+0x449/0x710 [ 1453.779057][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.779057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.779057][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.779057][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.779057][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.779057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.779057][ T72] [ 1453.782110][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1453.782110][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.782110][ T72] ipv6_find_idev+0x102/0x170 [ 1453.782110][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.782110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.782110][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.782110][ T72] netlink_unicast+0x449/0x710 [ 1453.782110][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.782110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.782110][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.782110][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.782110][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.782110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.782110][ T72] [ 1453.784470][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1453.784470][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.784470][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.784470][ T72] ipv6_find_idev+0x102/0x170 [ 1453.784470][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.784470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.784470][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.784470][ T72] netlink_unicast+0x449/0x710 [ 1453.784470][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.784470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.784470][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.784470][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.784470][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.784470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.784470][ T72] [ 1453.787070][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1453.787509][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1453.787509][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.787509][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.787509][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.787509][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.787509][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.787509][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.787509][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.787509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.787509][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.787509][ T72] netlink_unicast+0x449/0x710 [ 1453.787509][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.787509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.787509][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.787509][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.787509][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.787509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.787509][ T72] [ 1453.790605][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1453.790605][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.790605][ T72] ipv6_find_idev+0x102/0x170 [ 1453.790605][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.790605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.790605][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.790605][ T72] netlink_unicast+0x449/0x710 [ 1453.790605][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.790605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.790605][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.790605][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.790605][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.790605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.790605][ T72] [ 1453.793024][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1453.793024][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.793024][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.793024][ T72] ipv6_find_idev+0x102/0x170 [ 1453.793024][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.793024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.793024][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.793024][ T72] netlink_unicast+0x449/0x710 [ 1453.793024][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.793024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.793024][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.793024][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.793024][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.793024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.793024][ T72] [ 1453.796394][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1453.796792][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1453.796792][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.796792][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.796792][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.796792][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.796792][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.796792][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.796792][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.796792][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.796792][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.796792][ T72] netlink_unicast+0x449/0x710 [ 1453.796792][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.796792][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.796792][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.796792][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.796792][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.796792][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.796792][ T72] [ 1453.799686][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1453.799686][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.799686][ T72] ipv6_find_idev+0x102/0x170 [ 1453.799686][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.799686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.799686][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.799686][ T72] netlink_unicast+0x449/0x710 [ 1453.799686][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.799686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.799686][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.799686][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.799686][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.799686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.799686][ T72] [ 1453.801916][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1453.801916][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.801916][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.801916][ T72] ipv6_find_idev+0x102/0x170 [ 1453.801916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.801916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.801916][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.801916][ T72] netlink_unicast+0x449/0x710 [ 1453.801916][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.801916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.801916][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.801916][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.801916][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.801916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.801916][ T72] [ 1453.804547][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1453.805068][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1453.805068][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.805068][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.805068][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.805068][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.805068][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.805068][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.805068][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.805068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.805068][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.805068][ T72] netlink_unicast+0x449/0x710 [ 1453.805068][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.805068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.805068][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.805068][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.805068][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.805068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.805068][ T72] [ 1453.807898][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1453.807898][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.807898][ T72] ipv6_find_idev+0x102/0x170 [ 1453.807898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.807898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.807898][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.807898][ T72] netlink_unicast+0x449/0x710 [ 1453.807898][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.807898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.807898][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.807898][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.807898][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.807898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.807898][ T72] [ 1453.809675][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1453.809675][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.809675][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.809675][ T72] ipv6_find_idev+0x102/0x170 [ 1453.809675][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.809675][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.809675][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.809675][ T72] netlink_unicast+0x449/0x710 [ 1453.809675][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.809675][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.809675][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.809675][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.809675][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.809675][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.809675][ T72] [ 1453.811653][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1453.812045][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1453.812045][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.812045][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.812045][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.812045][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.812045][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.812045][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.812045][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.812045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.812045][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.812045][ T72] netlink_unicast+0x449/0x710 [ 1453.812045][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.812045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.812045][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.812045][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.812045][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.812045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.812045][ T72] [ 1453.814238][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1453.814238][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.814238][ T72] ipv6_find_idev+0x102/0x170 [ 1453.814238][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.814238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.814238][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.814238][ T72] netlink_unicast+0x449/0x710 [ 1453.814238][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.814238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.814238][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.814238][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.814238][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.814238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.814238][ T72] [ 1453.815971][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1453.815971][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.815971][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.815971][ T72] ipv6_find_idev+0x102/0x170 [ 1453.815971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.815971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.815971][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.815971][ T72] netlink_unicast+0x449/0x710 [ 1453.815971][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.815971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.815971][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.815971][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.815971][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.815971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.815971][ T72] [ 1453.817884][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1453.818148][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1453.818148][ T72] netdev_get_by_index+0x5e/0x80 [ 1453.818148][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1453.818148][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1453.818148][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1453.818148][ T72] ipv6_add_addr+0x411/0x2000 [ 1453.818148][ T72] inet6_addr_add+0x30e/0xa40 [ 1453.818148][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1453.818148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.818148][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.818148][ T72] netlink_unicast+0x449/0x710 [ 1453.818148][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.818148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.818148][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.818148][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.818148][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.818148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.818148][ T72] [ 1453.820884][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1453.820884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1453.820884][ T72] ipv6_find_idev+0x102/0x170 [ 1453.820884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.820884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.820884][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.820884][ T72] netlink_unicast+0x449/0x710 [ 1453.820884][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.820884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.820884][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.820884][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.820884][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.820884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.820884][ T72] [ 1453.822542][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1453.822542][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1453.822542][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1453.822542][ T72] ipv6_find_idev+0x102/0x170 [ 1453.822542][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1453.822542][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1453.822542][ T72] netlink_rcv_skb+0x130/0x360 [ 1453.822542][ T72] netlink_unicast+0x449/0x710 [ 1453.822542][ T72] netlink_sendmsg+0x723/0xbe0 [ 1453.822542][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1453.822542][ T72] ___sys_sendmsg+0xee/0x170 [ 1453.822542][ T72] __sys_sendmsg+0xcd/0x170 [ 1453.822542][ T72] do_syscall_64+0xc6/0x1e0 [ 1453.822542][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1453.822542][ T72] [ 1464.062850][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1464.063388][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1464.063388][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.063388][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.063388][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.063388][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.063388][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.063388][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.063388][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.063388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.063388][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.063388][ T72] netlink_unicast+0x449/0x710 [ 1464.063388][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.063388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.063388][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.063388][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.063388][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.063388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.063388][ T72] [ 1464.066704][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1464.066704][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.066704][ T72] ipv6_find_idev+0x102/0x170 [ 1464.066704][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.066704][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.066704][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.066704][ T72] netlink_unicast+0x449/0x710 [ 1464.066704][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.066704][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.066704][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.066704][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.066704][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.066704][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.066704][ T72] [ 1464.069143][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1464.069143][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.069143][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.069143][ T72] ipv6_find_idev+0x102/0x170 [ 1464.069143][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.069143][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.069143][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.069143][ T72] netlink_unicast+0x449/0x710 [ 1464.069143][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.069143][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.069143][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.069143][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.069143][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.069143][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.069143][ T72] [ 1464.071822][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1464.072258][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1464.072258][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.072258][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.072258][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.072258][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.072258][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.072258][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.072258][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.072258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.072258][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.072258][ T72] netlink_unicast+0x449/0x710 [ 1464.072258][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.072258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.072258][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.072258][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.072258][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.072258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.072258][ T72] [ 1464.075397][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1464.075397][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.075397][ T72] ipv6_find_idev+0x102/0x170 [ 1464.075397][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.075397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.075397][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.075397][ T72] netlink_unicast+0x449/0x710 [ 1464.075397][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.075397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.075397][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.075397][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.075397][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.075397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.075397][ T72] [ 1464.077843][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1464.077843][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.077843][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.077843][ T72] ipv6_find_idev+0x102/0x170 [ 1464.077843][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.077843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.077843][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.077843][ T72] netlink_unicast+0x449/0x710 [ 1464.077843][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.077843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.077843][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.077843][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.077843][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.077843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.077843][ T72] [ 1464.080495][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1464.080942][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1464.080942][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.080942][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.080942][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.080942][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.080942][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.080942][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.080942][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.080942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.080942][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.080942][ T72] netlink_unicast+0x449/0x710 [ 1464.080942][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.080942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.080942][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.080942][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.080942][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.080942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.080942][ T72] [ 1464.084134][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1464.084134][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.084134][ T72] ipv6_find_idev+0x102/0x170 [ 1464.084134][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.084134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.084134][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.084134][ T72] netlink_unicast+0x449/0x710 [ 1464.084134][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.084134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.084134][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.084134][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.084134][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.084134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.084134][ T72] [ 1464.086547][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1464.086547][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.086547][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.086547][ T72] ipv6_find_idev+0x102/0x170 [ 1464.086547][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.086547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.086547][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.086547][ T72] netlink_unicast+0x449/0x710 [ 1464.086547][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.086547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.086547][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.086547][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.086547][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.086547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.086547][ T72] [ 1464.089208][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1464.089633][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1464.089633][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.089633][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.089633][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.089633][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.089633][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.089633][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.089633][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.089633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.089633][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.089633][ T72] netlink_unicast+0x449/0x710 [ 1464.089633][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.089633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.089633][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.089633][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.089633][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.089633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.089633][ T72] [ 1464.092766][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1464.092766][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.092766][ T72] ipv6_find_idev+0x102/0x170 [ 1464.092766][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.092766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.092766][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.092766][ T72] netlink_unicast+0x449/0x710 [ 1464.092766][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.092766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.092766][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.092766][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.092766][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.092766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.092766][ T72] [ 1464.095201][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1464.095201][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.095201][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.095201][ T72] ipv6_find_idev+0x102/0x170 [ 1464.095201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.095201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.095201][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.095201][ T72] netlink_unicast+0x449/0x710 [ 1464.095201][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.095201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.095201][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.095201][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.095201][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.095201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.095201][ T72] [ 1464.098612][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1464.099706][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1464.099706][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.099706][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.099706][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.099706][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.099706][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.099706][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.099706][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.099706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.099706][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.099706][ T72] netlink_unicast+0x449/0x710 [ 1464.099706][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.099706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.099706][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.099706][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.099706][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.099706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.099706][ T72] [ 1464.102841][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1464.102841][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.102841][ T72] ipv6_find_idev+0x102/0x170 [ 1464.102841][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.102841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.102841][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.102841][ T72] netlink_unicast+0x449/0x710 [ 1464.102841][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.102841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.102841][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.102841][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.102841][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.102841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.102841][ T72] [ 1464.105269][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1464.105269][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.105269][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.105269][ T72] ipv6_find_idev+0x102/0x170 [ 1464.105269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.105269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.105269][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.105269][ T72] netlink_unicast+0x449/0x710 [ 1464.105269][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.105269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.105269][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.105269][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.105269][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.105269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.105269][ T72] [ 1464.107921][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1464.108353][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1464.108353][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.108353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.108353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.108353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.108353][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.108353][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.108353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.108353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.108353][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.108353][ T72] netlink_unicast+0x449/0x710 [ 1464.108353][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.108353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.108353][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.108353][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.108353][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.108353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.108353][ T72] [ 1464.111495][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1464.111495][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.111495][ T72] ipv6_find_idev+0x102/0x170 [ 1464.111495][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.111495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.111495][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.111495][ T72] netlink_unicast+0x449/0x710 [ 1464.111495][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.111495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.111495][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.111495][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.111495][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.111495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.111495][ T72] [ 1464.114050][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1464.114050][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.114050][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.114050][ T72] ipv6_find_idev+0x102/0x170 [ 1464.114050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.114050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.114050][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.114050][ T72] netlink_unicast+0x449/0x710 [ 1464.114050][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.114050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.114050][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.114050][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.114050][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.114050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.114050][ T72] [ 1464.117128][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1464.117558][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1464.117558][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.117558][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.117558][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.117558][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.117558][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.117558][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.117558][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.117558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.117558][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.117558][ T72] netlink_unicast+0x449/0x710 [ 1464.117558][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.117558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.117558][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.117558][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.117558][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.117558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.117558][ T72] [ 1464.121274][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1464.121274][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.121274][ T72] ipv6_find_idev+0x102/0x170 [ 1464.121274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.121274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.121274][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.121274][ T72] netlink_unicast+0x449/0x710 [ 1464.121274][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.121274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.121274][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.121274][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.121274][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.121274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.121274][ T72] [ 1464.124059][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1464.124059][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.124059][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.124059][ T72] ipv6_find_idev+0x102/0x170 [ 1464.124059][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.124059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.124059][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.124059][ T72] netlink_unicast+0x449/0x710 [ 1464.124059][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.124059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.124059][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.124059][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.124059][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.124059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.124059][ T72] [ 1464.127128][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1464.127549][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1464.127549][ T72] netdev_get_by_index+0x5e/0x80 [ 1464.127549][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1464.127549][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1464.127549][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1464.127549][ T72] ipv6_add_addr+0x411/0x2000 [ 1464.127549][ T72] inet6_addr_add+0x30e/0xa40 [ 1464.127549][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1464.127549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.127549][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.127549][ T72] netlink_unicast+0x449/0x710 [ 1464.127549][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.127549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.127549][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.127549][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.127549][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.127549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.127549][ T72] [ 1464.131147][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1464.131147][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1464.131147][ T72] ipv6_find_idev+0x102/0x170 [ 1464.131147][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.131147][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.131147][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.131147][ T72] netlink_unicast+0x449/0x710 [ 1464.131147][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.131147][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.131147][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.131147][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.131147][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.131147][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.131147][ T72] [ 1464.133903][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1464.133903][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1464.133903][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1464.133903][ T72] ipv6_find_idev+0x102/0x170 [ 1464.133903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1464.133903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1464.133903][ T72] netlink_rcv_skb+0x130/0x360 [ 1464.133903][ T72] netlink_unicast+0x449/0x710 [ 1464.133903][ T72] netlink_sendmsg+0x723/0xbe0 [ 1464.133903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1464.133903][ T72] ___sys_sendmsg+0xee/0x170 [ 1464.133903][ T72] __sys_sendmsg+0xcd/0x170 [ 1464.133903][ T72] do_syscall_64+0xc6/0x1e0 [ 1464.133903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1464.133903][ T72] [ 1474.374813][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1474.375273][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1474.375273][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.375273][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.375273][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.375273][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.375273][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.375273][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.375273][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.375273][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.375273][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.375273][ T72] netlink_unicast+0x449/0x710 [ 1474.375273][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.375273][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.375273][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.375273][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.375273][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.375273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.375273][ T72] [ 1474.377265][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1474.377265][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.377265][ T72] ipv6_find_idev+0x102/0x170 [ 1474.377265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.377265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.377265][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.377265][ T72] netlink_unicast+0x449/0x710 [ 1474.377265][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.377265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.377265][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.377265][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.377265][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.377265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.377265][ T72] [ 1474.378788][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1474.378788][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.378788][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.378788][ T72] ipv6_find_idev+0x102/0x170 [ 1474.378788][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.378788][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.378788][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.378788][ T72] netlink_unicast+0x449/0x710 [ 1474.378788][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.378788][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.378788][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.378788][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.378788][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.378788][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.378788][ T72] [ 1474.380543][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1474.380825][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1474.380825][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.380825][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.380825][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.380825][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.380825][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.380825][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.380825][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.380825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.380825][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.380825][ T72] netlink_unicast+0x449/0x710 [ 1474.380825][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.380825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.380825][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.380825][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.380825][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.380825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.380825][ T72] [ 1474.382793][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1474.382793][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.382793][ T72] ipv6_find_idev+0x102/0x170 [ 1474.382793][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.382793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.382793][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.382793][ T72] netlink_unicast+0x449/0x710 [ 1474.382793][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.382793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.382793][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.382793][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.382793][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.382793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.382793][ T72] [ 1474.384317][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1474.384317][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.384317][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.384317][ T72] ipv6_find_idev+0x102/0x170 [ 1474.384317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.384317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.384317][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.384317][ T72] netlink_unicast+0x449/0x710 [ 1474.384317][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.384317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.384317][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.384317][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.384317][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.384317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.384317][ T72] [ 1474.385984][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1474.386243][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1474.386243][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.386243][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.386243][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.386243][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.386243][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.386243][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.386243][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.386243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.386243][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.386243][ T72] netlink_unicast+0x449/0x710 [ 1474.386243][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.386243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.386243][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.386243][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.386243][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.386243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.386243][ T72] [ 1474.388688][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1474.388688][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.388688][ T72] ipv6_find_idev+0x102/0x170 [ 1474.388688][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.388688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.388688][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.388688][ T72] netlink_unicast+0x449/0x710 [ 1474.388688][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.388688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.388688][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.388688][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.388688][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.388688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.388688][ T72] [ 1474.391104][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1474.391104][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.391104][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.391104][ T72] ipv6_find_idev+0x102/0x170 [ 1474.391104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.391104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.391104][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.391104][ T72] netlink_unicast+0x449/0x710 [ 1474.391104][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.391104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.391104][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.391104][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.391104][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.391104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.391104][ T72] [ 1474.393776][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1474.394229][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1474.394229][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.394229][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.394229][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.394229][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.394229][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.394229][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.394229][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.394229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.394229][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.394229][ T72] netlink_unicast+0x449/0x710 [ 1474.394229][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.394229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.394229][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.394229][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.394229][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.394229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.394229][ T72] [ 1474.397357][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1474.397357][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.397357][ T72] ipv6_find_idev+0x102/0x170 [ 1474.397357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.397357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.397357][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.397357][ T72] netlink_unicast+0x449/0x710 [ 1474.397357][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.397357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.397357][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.397357][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.397357][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.397357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.397357][ T72] [ 1474.399773][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1474.399773][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.399773][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.399773][ T72] ipv6_find_idev+0x102/0x170 [ 1474.399773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.399773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.399773][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.399773][ T72] netlink_unicast+0x449/0x710 [ 1474.399773][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.399773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.399773][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.399773][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.399773][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.399773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.399773][ T72] [ 1474.403208][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1474.403646][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1474.403646][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.403646][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.403646][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.403646][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.403646][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.403646][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.403646][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.403646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.403646][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.403646][ T72] netlink_unicast+0x449/0x710 [ 1474.403646][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.403646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.403646][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.403646][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.403646][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.403646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.403646][ T72] [ 1474.406806][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1474.406806][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.406806][ T72] ipv6_find_idev+0x102/0x170 [ 1474.406806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.406806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.406806][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.406806][ T72] netlink_unicast+0x449/0x710 [ 1474.406806][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.406806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.406806][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.406806][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.406806][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.406806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.406806][ T72] [ 1474.409217][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1474.409217][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.409217][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.409217][ T72] ipv6_find_idev+0x102/0x170 [ 1474.409217][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.409217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.409217][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.409217][ T72] netlink_unicast+0x449/0x710 [ 1474.409217][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.409217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.409217][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.409217][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.409217][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.409217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.409217][ T72] [ 1474.411944][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1474.412366][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1474.412366][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.412366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.412366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.412366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.412366][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.412366][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.412366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.412366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.412366][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.412366][ T72] netlink_unicast+0x449/0x710 [ 1474.412366][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.412366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.412366][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.412366][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.412366][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.412366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.412366][ T72] [ 1474.415738][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1474.415738][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.415738][ T72] ipv6_find_idev+0x102/0x170 [ 1474.415738][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.415738][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.415738][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.415738][ T72] netlink_unicast+0x449/0x710 [ 1474.415738][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.415738][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.415738][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.415738][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.415738][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.415738][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.415738][ T72] [ 1474.418593][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1474.418593][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.418593][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.418593][ T72] ipv6_find_idev+0x102/0x170 [ 1474.418593][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.418593][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.418593][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.418593][ T72] netlink_unicast+0x449/0x710 [ 1474.418593][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.418593][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.418593][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.418593][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.418593][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.418593][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.418593][ T72] [ 1474.421655][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1474.422177][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1474.422177][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.422177][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.422177][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.422177][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.422177][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.422177][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.422177][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.422177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.422177][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.422177][ T72] netlink_unicast+0x449/0x710 [ 1474.422177][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.422177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.422177][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.422177][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.422177][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.422177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.422177][ T72] [ 1474.425660][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1474.425660][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.425660][ T72] ipv6_find_idev+0x102/0x170 [ 1474.425660][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.425660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.425660][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.425660][ T72] netlink_unicast+0x449/0x710 [ 1474.425660][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.425660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.425660][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.425660][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.425660][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.425660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.425660][ T72] [ 1474.428410][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1474.428410][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.428410][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.428410][ T72] ipv6_find_idev+0x102/0x170 [ 1474.428410][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.428410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.428410][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.428410][ T72] netlink_unicast+0x449/0x710 [ 1474.428410][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.428410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.428410][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.428410][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.428410][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.428410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.428410][ T72] [ 1474.431568][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1474.432102][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1474.432102][ T72] netdev_get_by_index+0x5e/0x80 [ 1474.432102][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1474.432102][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1474.432102][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1474.432102][ T72] ipv6_add_addr+0x411/0x2000 [ 1474.432102][ T72] inet6_addr_add+0x30e/0xa40 [ 1474.432102][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1474.432102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.432102][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.432102][ T72] netlink_unicast+0x449/0x710 [ 1474.432102][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.432102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.432102][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.432102][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.432102][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.432102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.432102][ T72] [ 1474.435703][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1474.435703][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1474.435703][ T72] ipv6_find_idev+0x102/0x170 [ 1474.435703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.435703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.435703][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.435703][ T72] netlink_unicast+0x449/0x710 [ 1474.435703][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.435703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.435703][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.435703][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.435703][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.435703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.435703][ T72] [ 1474.438351][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1474.438351][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1474.438351][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1474.438351][ T72] ipv6_find_idev+0x102/0x170 [ 1474.438351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1474.438351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1474.438351][ T72] netlink_rcv_skb+0x130/0x360 [ 1474.438351][ T72] netlink_unicast+0x449/0x710 [ 1474.438351][ T72] netlink_sendmsg+0x723/0xbe0 [ 1474.438351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1474.438351][ T72] ___sys_sendmsg+0xee/0x170 [ 1474.438351][ T72] __sys_sendmsg+0xcd/0x170 [ 1474.438351][ T72] do_syscall_64+0xc6/0x1e0 [ 1474.438351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1474.438351][ T72] [ 1475.878822][ T42] INFO: task modprobe:1060 blocked for more than 1228 seconds. [ 1475.879194][ T42] Not tainted 6.8.0-virtme #1 [ 1475.879316][ T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1475.879530][ T42] task:modprobe state:D stack:25024 pid:1060 tgid:1060 ppid:60 flags:0x00004002 [ 1475.879821][ T42] Call Trace: [ 1475.879943][ T42] [ 1475.880023][ T42] __schedule+0x705/0x1ac0 [ 1475.880189][ T42] ? __pfx___schedule+0x10/0x10 [ 1475.880324][ T42] ? schedule+0x1a5/0x210 [ 1475.880422][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1475.880557][ T42] ? mark_lock+0x38/0x3e0 [ 1475.880656][ T42] ? do_raw_spin_lock+0x131/0x270 [ 1475.880800][ T42] ? schedule+0x1a5/0x210 [ 1475.880901][ T42] schedule+0xdf/0x210 [ 1475.880999][ T42] schedule_preempt_disabled+0x15/0x30 [ 1475.881130][ T42] rwsem_down_write_slowpath+0x3af/0xab0 [ 1475.881269][ T42] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 1475.881464][ T42] ? kasan_save_stack+0x34/0x50 [ 1475.881590][ T42] ? kasan_save_stack+0x24/0x50 [ 1475.881718][ T42] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1475.881863][ T42] ? lock_acquire+0x1c1/0x220 [ 1475.881999][ T42] ? register_pernet_subsys+0x1a/0x50 [ 1475.882132][ T42] down_write+0x1c9/0x200 [ 1475.882232][ T42] ? __pfx_down_write+0x10/0x10 [ 1475.882360][ T42] ? __pfx___lock_release+0x10/0x10 [ 1475.882491][ T42] ? __pfx_nf_tables_module_init+0x10/0x10 [nf_tables] [ 1475.882679][ T42] register_pernet_subsys+0x1a/0x50 [ 1475.882819][ T42] nf_tables_module_init+0x17/0x100 [nf_tables] [ 1475.883000][ T42] do_one_initcall+0xc8/0x3f0 [ 1475.883129][ T42] ? __pfx_do_one_initcall+0x10/0x10 [ 1475.883257][ T42] ? __create_object+0x5e/0xb0 [ 1475.883397][ T42] ? kasan_unpoison+0x27/0x60 [ 1475.883526][ T42] do_init_module+0x233/0x740 [ 1475.883662][ T42] load_module+0x16b5/0x2350 [ 1475.883835][ T42] ? __pfx_load_module+0x10/0x10 [ 1475.883979][ T42] ? kernel_read_file+0x3d2/0x520 [ 1475.884142][ T42] ? kernel_read_file+0x300/0x520 [ 1475.884272][ T42] ? __pfx_kernel_read_file+0x10/0x10 [ 1475.884406][ T42] ? init_module_from_file+0xd2/0x130 [ 1475.884531][ T42] init_module_from_file+0xd2/0x130 [ 1475.884662][ T42] ? __pfx_init_module_from_file+0x10/0x10 [ 1475.884828][ T42] ? __lock_release+0x103/0x460 [ 1475.884954][ T42] ? idempotent_init_module+0x32a/0x620 [ 1475.885093][ T42] ? idempotent_init_module+0x32a/0x620 [ 1475.885221][ T42] ? do_raw_spin_unlock+0x58/0x220 [ 1475.885350][ T42] idempotent_init_module+0x342/0x620 [ 1475.885481][ T42] ? __pfx_idempotent_init_module+0x10/0x10 [ 1475.885654][ T42] __x64_sys_finit_module+0xbe/0x130 [ 1475.885793][ T42] do_syscall_64+0xc6/0x1e0 [ 1475.885922][ T42] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1475.886078][ T42] RIP: 0033:0x7f69f7397e5d [ 1475.886210][ T42] RSP: 002b:00007ffd30d47928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 1475.886403][ T42] RAX: ffffffffffffffda RBX: 00005653e2840e60 RCX: 00007f69f7397e5d [ 1475.886587][ T42] RDX: 0000000000000000 RSI: 00005653a5362a2a RDI: 0000000000000000 [ 1475.886817][ T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00005653e2841050 [ 1475.887003][ T42] R10: 0000000000000000 R11: 0000000000000246 R12: 00005653a5362a2a [ 1475.887193][ T42] R13: 00005653e2840f80 R14: 00005653e28410c0 R15: 0000000000000000 [ 1475.887392][ T42] [ 1475.887487][ T42] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings [ 1475.887705][ T42] [ 1475.887705][ T42] Showing all locks held in the system: [ 1475.887912][ T42] 1 lock held by khungtaskd/42: [ 1475.888052][ T42] #0: ffffffff95b69160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350 [ 1475.888282][ T42] 2 locks held by kworker/u20:1/60: [ 1475.888402][ T42] #0: ffff888001159d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1475.888657][ T42] #1: ffffc9000041fda0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1475.888949][ T42] 3 locks held by kworker/u16:1/72: [ 1475.889074][ T42] #0: ffff8880018fa948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0 [ 1475.889321][ T42] #1: ffffc900004dfda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0 [ 1475.889543][ T42] #2: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xa20 [ 1475.889778][ T42] 1 lock held by modprobe/1060: [ 1475.889901][ T42] #0: ffffffff9636bf10 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50 [ 1475.890154][ T42] [ 1475.890218][ T42] ============================================= [ 1475.890218][ T42] [ 1484.654820][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1484.655291][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1484.655291][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.655291][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.655291][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.655291][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.655291][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.655291][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.655291][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.655291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.655291][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.655291][ T72] netlink_unicast+0x449/0x710 [ 1484.655291][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.655291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.655291][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.655291][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.655291][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.655291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.655291][ T72] [ 1484.657725][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1484.657725][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.657725][ T72] ipv6_find_idev+0x102/0x170 [ 1484.657725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.657725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.657725][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.657725][ T72] netlink_unicast+0x449/0x710 [ 1484.657725][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.657725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.657725][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.657725][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.657725][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.657725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.657725][ T72] [ 1484.659254][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1484.659254][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.659254][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.659254][ T72] ipv6_find_idev+0x102/0x170 [ 1484.659254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.659254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.659254][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.659254][ T72] netlink_unicast+0x449/0x710 [ 1484.659254][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.659254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.659254][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.659254][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.659254][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.659254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.659254][ T72] [ 1484.660936][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1484.661210][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1484.661210][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.661210][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.661210][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.661210][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.661210][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.661210][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.661210][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.661210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.661210][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.661210][ T72] netlink_unicast+0x449/0x710 [ 1484.661210][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.661210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.661210][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.661210][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.661210][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.661210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.661210][ T72] [ 1484.663186][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1484.663186][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.663186][ T72] ipv6_find_idev+0x102/0x170 [ 1484.663186][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.663186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.663186][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.663186][ T72] netlink_unicast+0x449/0x710 [ 1484.663186][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.663186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.663186][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.663186][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.663186][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.663186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.663186][ T72] [ 1484.664744][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1484.664744][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.664744][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.664744][ T72] ipv6_find_idev+0x102/0x170 [ 1484.664744][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.664744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.664744][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.664744][ T72] netlink_unicast+0x449/0x710 [ 1484.664744][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.664744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.664744][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.664744][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.664744][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.664744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.664744][ T72] [ 1484.666507][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1484.666773][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1484.666773][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.666773][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.666773][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.666773][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.666773][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.666773][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.666773][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.666773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.666773][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.666773][ T72] netlink_unicast+0x449/0x710 [ 1484.666773][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.666773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.666773][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.666773][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.666773][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.666773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.666773][ T72] [ 1484.669277][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1484.669277][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.669277][ T72] ipv6_find_idev+0x102/0x170 [ 1484.669277][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.669277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.669277][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.669277][ T72] netlink_unicast+0x449/0x710 [ 1484.669277][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.669277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.669277][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.669277][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.669277][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.669277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.669277][ T72] [ 1484.670878][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1484.670878][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.670878][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.670878][ T72] ipv6_find_idev+0x102/0x170 [ 1484.670878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.670878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.670878][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.670878][ T72] netlink_unicast+0x449/0x710 [ 1484.670878][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.670878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.670878][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.670878][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.670878][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.670878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.670878][ T72] [ 1484.672561][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1484.673259][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1484.673259][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.673259][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.673259][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.673259][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.673259][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.673259][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.673259][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.673259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.673259][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.673259][ T72] netlink_unicast+0x449/0x710 [ 1484.673259][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.673259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.673259][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.673259][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.673259][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.673259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.673259][ T72] [ 1484.675237][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1484.675237][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.675237][ T72] ipv6_find_idev+0x102/0x170 [ 1484.675237][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.675237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.675237][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.675237][ T72] netlink_unicast+0x449/0x710 [ 1484.675237][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.675237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.675237][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.675237][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.675237][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.675237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.675237][ T72] [ 1484.677136][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1484.677136][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.677136][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.677136][ T72] ipv6_find_idev+0x102/0x170 [ 1484.677136][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.677136][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.677136][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.677136][ T72] netlink_unicast+0x449/0x710 [ 1484.677136][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.677136][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.677136][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.677136][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.677136][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.677136][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.677136][ T72] [ 1484.678837][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1484.679097][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1484.679097][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.679097][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.679097][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.679097][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.679097][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.679097][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.679097][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.679097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.679097][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.679097][ T72] netlink_unicast+0x449/0x710 [ 1484.679097][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.679097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.679097][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.679097][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.679097][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.679097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.679097][ T72] [ 1484.681060][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1484.681060][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.681060][ T72] ipv6_find_idev+0x102/0x170 [ 1484.681060][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.681060][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.681060][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.681060][ T72] netlink_unicast+0x449/0x710 [ 1484.681060][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.681060][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.681060][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.681060][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.681060][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.681060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.681060][ T72] [ 1484.682568][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1484.682568][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.682568][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.682568][ T72] ipv6_find_idev+0x102/0x170 [ 1484.682568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.682568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.682568][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.682568][ T72] netlink_unicast+0x449/0x710 [ 1484.682568][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.682568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.682568][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.682568][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.682568][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.682568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.682568][ T72] [ 1484.684270][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1484.684530][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1484.684530][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.684530][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.684530][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.684530][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.684530][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.684530][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.684530][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.684530][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.684530][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.684530][ T72] netlink_unicast+0x449/0x710 [ 1484.684530][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.684530][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.684530][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.684530][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.684530][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.684530][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.684530][ T72] [ 1484.686554][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1484.686554][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.686554][ T72] ipv6_find_idev+0x102/0x170 [ 1484.686554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.686554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.686554][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.686554][ T72] netlink_unicast+0x449/0x710 [ 1484.686554][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.686554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.686554][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.686554][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.686554][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.686554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.686554][ T72] [ 1484.688243][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1484.688243][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.688243][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.688243][ T72] ipv6_find_idev+0x102/0x170 [ 1484.688243][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.688243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.688243][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.688243][ T72] netlink_unicast+0x449/0x710 [ 1484.688243][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.688243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.688243][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.688243][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.688243][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.688243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.688243][ T72] [ 1484.690219][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1484.690479][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1484.690479][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.690479][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.690479][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.690479][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.690479][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.690479][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.690479][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.690479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.690479][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.690479][ T72] netlink_unicast+0x449/0x710 [ 1484.690479][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.690479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.690479][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.690479][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.690479][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.690479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.690479][ T72] [ 1484.692610][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1484.692610][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.692610][ T72] ipv6_find_idev+0x102/0x170 [ 1484.692610][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.692610][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.692610][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.692610][ T72] netlink_unicast+0x449/0x710 [ 1484.692610][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.692610][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.692610][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.692610][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.692610][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.692610][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.692610][ T72] [ 1484.694300][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1484.694300][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.694300][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.694300][ T72] ipv6_find_idev+0x102/0x170 [ 1484.694300][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.694300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.694300][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.694300][ T72] netlink_unicast+0x449/0x710 [ 1484.694300][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.694300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.694300][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.694300][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.694300][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.694300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.694300][ T72] [ 1484.696227][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1484.696486][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1484.696486][ T72] netdev_get_by_index+0x5e/0x80 [ 1484.696486][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1484.696486][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1484.696486][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1484.696486][ T72] ipv6_add_addr+0x411/0x2000 [ 1484.696486][ T72] inet6_addr_add+0x30e/0xa40 [ 1484.696486][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1484.696486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.696486][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.696486][ T72] netlink_unicast+0x449/0x710 [ 1484.696486][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.696486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.696486][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.696486][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.696486][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.696486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.696486][ T72] [ 1484.698622][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1484.698622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1484.698622][ T72] ipv6_find_idev+0x102/0x170 [ 1484.698622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.698622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.698622][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.698622][ T72] netlink_unicast+0x449/0x710 [ 1484.698622][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.698622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.698622][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.698622][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.698622][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.698622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.698622][ T72] [ 1484.700369][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1484.700369][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1484.700369][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1484.700369][ T72] ipv6_find_idev+0x102/0x170 [ 1484.700369][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1484.700369][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1484.700369][ T72] netlink_rcv_skb+0x130/0x360 [ 1484.700369][ T72] netlink_unicast+0x449/0x710 [ 1484.700369][ T72] netlink_sendmsg+0x723/0xbe0 [ 1484.700369][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1484.700369][ T72] ___sys_sendmsg+0xee/0x170 [ 1484.700369][ T72] __sys_sendmsg+0xcd/0x170 [ 1484.700369][ T72] do_syscall_64+0xc6/0x1e0 [ 1484.700369][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1484.700369][ T72] [ 1494.910868][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1494.911258][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1494.911258][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.911258][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.911258][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.911258][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.911258][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.911258][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.911258][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.911258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.911258][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.911258][ T72] netlink_unicast+0x449/0x710 [ 1494.911258][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.911258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.911258][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.911258][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.911258][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.911258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.911258][ T72] [ 1494.913228][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1494.913228][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.913228][ T72] ipv6_find_idev+0x102/0x170 [ 1494.913228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.913228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.913228][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.913228][ T72] netlink_unicast+0x449/0x710 [ 1494.913228][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.913228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.913228][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.913228][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.913228][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.913228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.913228][ T72] [ 1494.914748][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1494.914748][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.914748][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.914748][ T72] ipv6_find_idev+0x102/0x170 [ 1494.914748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.914748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.914748][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.914748][ T72] netlink_unicast+0x449/0x710 [ 1494.914748][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.914748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.914748][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.914748][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.914748][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.914748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.914748][ T72] [ 1494.916511][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1494.916782][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1494.916782][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.916782][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.916782][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.916782][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.916782][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.916782][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.916782][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.916782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.916782][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.916782][ T72] netlink_unicast+0x449/0x710 [ 1494.916782][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.916782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.916782][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.916782][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.916782][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.916782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.916782][ T72] [ 1494.918734][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1494.918734][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.918734][ T72] ipv6_find_idev+0x102/0x170 [ 1494.918734][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.918734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.918734][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.918734][ T72] netlink_unicast+0x449/0x710 [ 1494.918734][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.918734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.918734][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.918734][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.918734][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.918734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.918734][ T72] [ 1494.920256][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1494.920256][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.920256][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.920256][ T72] ipv6_find_idev+0x102/0x170 [ 1494.920256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.920256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.920256][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.920256][ T72] netlink_unicast+0x449/0x710 [ 1494.920256][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.920256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.920256][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.920256][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.920256][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.920256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.920256][ T72] [ 1494.921910][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1494.922168][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1494.922168][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.922168][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.922168][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.922168][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.922168][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.922168][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.922168][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.922168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.922168][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.922168][ T72] netlink_unicast+0x449/0x710 [ 1494.922168][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.922168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.922168][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.922168][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.922168][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.922168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.922168][ T72] [ 1494.924135][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1494.924135][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.924135][ T72] ipv6_find_idev+0x102/0x170 [ 1494.924135][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.924135][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.924135][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.924135][ T72] netlink_unicast+0x449/0x710 [ 1494.924135][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.924135][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.924135][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.924135][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.924135][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.924135][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.924135][ T72] [ 1494.925642][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1494.925642][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.925642][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.925642][ T72] ipv6_find_idev+0x102/0x170 [ 1494.925642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.925642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.925642][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.925642][ T72] netlink_unicast+0x449/0x710 [ 1494.925642][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.925642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.925642][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.925642][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.925642][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.925642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.925642][ T72] [ 1494.927310][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1494.927571][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1494.927571][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.927571][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.927571][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.927571][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.927571][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.927571][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.927571][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.927571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.927571][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.927571][ T72] netlink_unicast+0x449/0x710 [ 1494.927571][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.927571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.927571][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.927571][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.927571][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.927571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.927571][ T72] [ 1494.929529][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1494.929529][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.929529][ T72] ipv6_find_idev+0x102/0x170 [ 1494.929529][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.929529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.929529][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.929529][ T72] netlink_unicast+0x449/0x710 [ 1494.929529][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.929529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.929529][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.929529][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.929529][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.929529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.929529][ T72] [ 1494.931039][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1494.931039][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.931039][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.931039][ T72] ipv6_find_idev+0x102/0x170 [ 1494.931039][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.931039][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.931039][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.931039][ T72] netlink_unicast+0x449/0x710 [ 1494.931039][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.931039][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.931039][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.931039][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.931039][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.931039][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.931039][ T72] [ 1494.933194][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1494.933466][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1494.933466][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.933466][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.933466][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.933466][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.933466][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.933466][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.933466][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.933466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.933466][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.933466][ T72] netlink_unicast+0x449/0x710 [ 1494.933466][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.933466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.933466][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.933466][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.933466][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.933466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.933466][ T72] [ 1494.935450][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1494.935450][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.935450][ T72] ipv6_find_idev+0x102/0x170 [ 1494.935450][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.935450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.935450][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.935450][ T72] netlink_unicast+0x449/0x710 [ 1494.935450][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.935450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.935450][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.935450][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.935450][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.935450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.935450][ T72] [ 1494.937333][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1494.937333][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.937333][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.937333][ T72] ipv6_find_idev+0x102/0x170 [ 1494.937333][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.937333][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.937333][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.937333][ T72] netlink_unicast+0x449/0x710 [ 1494.937333][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.937333][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.937333][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.937333][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.937333][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.937333][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.937333][ T72] [ 1494.939043][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1494.939308][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1494.939308][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.939308][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.939308][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.939308][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.939308][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.939308][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.939308][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.939308][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.939308][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.939308][ T72] netlink_unicast+0x449/0x710 [ 1494.939308][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.939308][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.939308][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.939308][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.939308][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.939308][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.939308][ T72] [ 1494.941406][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1494.941406][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.941406][ T72] ipv6_find_idev+0x102/0x170 [ 1494.941406][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.941406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.941406][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.941406][ T72] netlink_unicast+0x449/0x710 [ 1494.941406][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.941406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.941406][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.941406][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.941406][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.941406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.941406][ T72] [ 1494.943095][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1494.943095][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.943095][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.943095][ T72] ipv6_find_idev+0x102/0x170 [ 1494.943095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.943095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.943095][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.943095][ T72] netlink_unicast+0x449/0x710 [ 1494.943095][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.943095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.943095][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.943095][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.943095][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.943095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.943095][ T72] [ 1494.945037][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1494.945324][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1494.945324][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.945324][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.945324][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.945324][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.945324][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.945324][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.945324][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.945324][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.945324][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.945324][ T72] netlink_unicast+0x449/0x710 [ 1494.945324][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.945324][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.945324][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.945324][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.945324][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.945324][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.945324][ T72] [ 1494.947523][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1494.947523][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.947523][ T72] ipv6_find_idev+0x102/0x170 [ 1494.947523][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.947523][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.947523][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.947523][ T72] netlink_unicast+0x449/0x710 [ 1494.947523][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.947523][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.947523][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.947523][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.947523][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.947523][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.947523][ T72] [ 1494.949212][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1494.949212][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.949212][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.949212][ T72] ipv6_find_idev+0x102/0x170 [ 1494.949212][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.949212][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.949212][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.949212][ T72] netlink_unicast+0x449/0x710 [ 1494.949212][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.949212][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.949212][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.949212][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.949212][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.949212][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.949212][ T72] [ 1494.951081][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1494.951340][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1494.951340][ T72] netdev_get_by_index+0x5e/0x80 [ 1494.951340][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1494.951340][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1494.951340][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1494.951340][ T72] ipv6_add_addr+0x411/0x2000 [ 1494.951340][ T72] inet6_addr_add+0x30e/0xa40 [ 1494.951340][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1494.951340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.951340][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.951340][ T72] netlink_unicast+0x449/0x710 [ 1494.951340][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.951340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.951340][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.951340][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.951340][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.951340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.951340][ T72] [ 1494.953578][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1494.953578][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1494.953578][ T72] ipv6_find_idev+0x102/0x170 [ 1494.953578][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.953578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.953578][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.953578][ T72] netlink_unicast+0x449/0x710 [ 1494.953578][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.953578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.953578][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.953578][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.953578][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.953578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.953578][ T72] [ 1494.955339][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1494.955339][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1494.955339][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1494.955339][ T72] ipv6_find_idev+0x102/0x170 [ 1494.955339][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1494.955339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1494.955339][ T72] netlink_rcv_skb+0x130/0x360 [ 1494.955339][ T72] netlink_unicast+0x449/0x710 [ 1494.955339][ T72] netlink_sendmsg+0x723/0xbe0 [ 1494.955339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1494.955339][ T72] ___sys_sendmsg+0xee/0x170 [ 1494.955339][ T72] __sys_sendmsg+0xcd/0x170 [ 1494.955339][ T72] do_syscall_64+0xc6/0x1e0 [ 1494.955339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1494.955339][ T72] [ 1505.206870][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1505.207284][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1505.207284][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.207284][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.207284][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.207284][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.207284][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.207284][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.207284][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.207284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.207284][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.207284][ T72] netlink_unicast+0x449/0x710 [ 1505.207284][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.207284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.207284][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.207284][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.207284][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.207284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.207284][ T72] [ 1505.209305][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1505.209305][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.209305][ T72] ipv6_find_idev+0x102/0x170 [ 1505.209305][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.209305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.209305][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.209305][ T72] netlink_unicast+0x449/0x710 [ 1505.209305][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.209305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.209305][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.209305][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.209305][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.209305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.209305][ T72] [ 1505.210846][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1505.210846][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.210846][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.210846][ T72] ipv6_find_idev+0x102/0x170 [ 1505.210846][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.210846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.210846][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.210846][ T72] netlink_unicast+0x449/0x710 [ 1505.210846][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.210846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.210846][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.210846][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.210846][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.210846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.210846][ T72] [ 1505.212554][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1505.212846][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1505.212846][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.212846][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.212846][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.212846][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.212846][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.212846][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.212846][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.212846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.212846][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.212846][ T72] netlink_unicast+0x449/0x710 [ 1505.212846][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.212846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.212846][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.212846][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.212846][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.212846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.212846][ T72] [ 1505.214908][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1505.214908][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.214908][ T72] ipv6_find_idev+0x102/0x170 [ 1505.214908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.214908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.214908][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.214908][ T72] netlink_unicast+0x449/0x710 [ 1505.214908][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.214908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.214908][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.214908][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.214908][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.214908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.214908][ T72] [ 1505.216843][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1505.216843][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.216843][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.216843][ T72] ipv6_find_idev+0x102/0x170 [ 1505.216843][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.216843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.216843][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.216843][ T72] netlink_unicast+0x449/0x710 [ 1505.216843][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.216843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.216843][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.216843][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.216843][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.216843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.216843][ T72] [ 1505.218536][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1505.218808][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1505.218808][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.218808][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.218808][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.218808][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.218808][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.218808][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.218808][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.218808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.218808][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.218808][ T72] netlink_unicast+0x449/0x710 [ 1505.218808][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.218808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.218808][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.218808][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.218808][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.218808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.218808][ T72] [ 1505.220814][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1505.220814][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.220814][ T72] ipv6_find_idev+0x102/0x170 [ 1505.220814][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.220814][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.220814][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.220814][ T72] netlink_unicast+0x449/0x710 [ 1505.220814][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.220814][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.220814][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.220814][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.220814][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.220814][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.220814][ T72] [ 1505.222351][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1505.222351][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.222351][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.222351][ T72] ipv6_find_idev+0x102/0x170 [ 1505.222351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.222351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.222351][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.222351][ T72] netlink_unicast+0x449/0x710 [ 1505.222351][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.222351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.222351][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.222351][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.222351][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.222351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.222351][ T72] [ 1505.224046][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1505.224315][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1505.224315][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.224315][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.224315][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.224315][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.224315][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.224315][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.224315][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.224315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.224315][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.224315][ T72] netlink_unicast+0x449/0x710 [ 1505.224315][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.224315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.224315][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.224315][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.224315][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.224315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.224315][ T72] [ 1505.226378][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1505.226378][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.226378][ T72] ipv6_find_idev+0x102/0x170 [ 1505.226378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.226378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.226378][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.226378][ T72] netlink_unicast+0x449/0x710 [ 1505.226378][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.226378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.226378][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.226378][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.226378][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.226378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.226378][ T72] [ 1505.227962][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1505.227962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.227962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.227962][ T72] ipv6_find_idev+0x102/0x170 [ 1505.227962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.227962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.227962][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.227962][ T72] netlink_unicast+0x449/0x710 [ 1505.227962][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.227962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.227962][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.227962][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.227962][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.227962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.227962][ T72] [ 1505.230047][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1505.230633][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1505.230633][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.230633][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.230633][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.230633][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.230633][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.230633][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.230633][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.230633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.230633][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.230633][ T72] netlink_unicast+0x449/0x710 [ 1505.230633][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.230633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.230633][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.230633][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.230633][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.230633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.230633][ T72] [ 1505.232629][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1505.232629][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.232629][ T72] ipv6_find_idev+0x102/0x170 [ 1505.232629][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.232629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.232629][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.232629][ T72] netlink_unicast+0x449/0x710 [ 1505.232629][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.232629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.232629][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.232629][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.232629][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.232629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.232629][ T72] [ 1505.234227][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1505.234227][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.234227][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.234227][ T72] ipv6_find_idev+0x102/0x170 [ 1505.234227][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.234227][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.234227][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.234227][ T72] netlink_unicast+0x449/0x710 [ 1505.234227][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.234227][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.234227][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.234227][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.234227][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.234227][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.234227][ T72] [ 1505.235930][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1505.236204][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1505.236204][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.236204][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.236204][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.236204][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.236204][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.236204][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.236204][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.236204][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.236204][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.236204][ T72] netlink_unicast+0x449/0x710 [ 1505.236204][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.236204][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.236204][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.236204][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.236204][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.236204][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.236204][ T72] [ 1505.238230][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1505.238230][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.238230][ T72] ipv6_find_idev+0x102/0x170 [ 1505.238230][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.238230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.238230][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.238230][ T72] netlink_unicast+0x449/0x710 [ 1505.238230][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.238230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.238230][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.238230][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.238230][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.238230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.238230][ T72] [ 1505.239849][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1505.239849][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.239849][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.239849][ T72] ipv6_find_idev+0x102/0x170 [ 1505.239849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.239849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.239849][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.239849][ T72] netlink_unicast+0x449/0x710 [ 1505.239849][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.239849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.239849][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.239849][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.239849][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.239849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.239849][ T72] [ 1505.241838][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1505.242147][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1505.242147][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.242147][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.242147][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.242147][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.242147][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.242147][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.242147][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.242147][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.242147][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.242147][ T72] netlink_unicast+0x449/0x710 [ 1505.242147][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.242147][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.242147][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.242147][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.242147][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.242147][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.242147][ T72] [ 1505.244367][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1505.244367][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.244367][ T72] ipv6_find_idev+0x102/0x170 [ 1505.244367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.244367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.244367][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.244367][ T72] netlink_unicast+0x449/0x710 [ 1505.244367][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.244367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.244367][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.244367][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.244367][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.244367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.244367][ T72] [ 1505.246078][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1505.246078][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.246078][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.246078][ T72] ipv6_find_idev+0x102/0x170 [ 1505.246078][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.246078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.246078][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.246078][ T72] netlink_unicast+0x449/0x710 [ 1505.246078][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.246078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.246078][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.246078][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.246078][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.246078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.246078][ T72] [ 1505.248045][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1505.248359][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1505.248359][ T72] netdev_get_by_index+0x5e/0x80 [ 1505.248359][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1505.248359][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1505.248359][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1505.248359][ T72] ipv6_add_addr+0x411/0x2000 [ 1505.248359][ T72] inet6_addr_add+0x30e/0xa40 [ 1505.248359][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1505.248359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.248359][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.248359][ T72] netlink_unicast+0x449/0x710 [ 1505.248359][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.248359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.248359][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.248359][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.248359][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.248359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.248359][ T72] [ 1505.250524][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1505.250524][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1505.250524][ T72] ipv6_find_idev+0x102/0x170 [ 1505.250524][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.250524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.250524][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.250524][ T72] netlink_unicast+0x449/0x710 [ 1505.250524][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.250524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.250524][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.250524][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.250524][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.250524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.250524][ T72] [ 1505.252301][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1505.252301][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1505.252301][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1505.252301][ T72] ipv6_find_idev+0x102/0x170 [ 1505.252301][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1505.252301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1505.252301][ T72] netlink_rcv_skb+0x130/0x360 [ 1505.252301][ T72] netlink_unicast+0x449/0x710 [ 1505.252301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1505.252301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1505.252301][ T72] ___sys_sendmsg+0xee/0x170 [ 1505.252301][ T72] __sys_sendmsg+0xcd/0x170 [ 1505.252301][ T72] do_syscall_64+0xc6/0x1e0 [ 1505.252301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1505.252301][ T72] [ 1515.470878][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1515.471274][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1515.471274][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.471274][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.471274][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.471274][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.471274][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.471274][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.471274][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.471274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.471274][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.471274][ T72] netlink_unicast+0x449/0x710 [ 1515.471274][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.471274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.471274][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.471274][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.471274][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.471274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.471274][ T72] [ 1515.473358][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1515.473358][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.473358][ T72] ipv6_find_idev+0x102/0x170 [ 1515.473358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.473358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.473358][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.473358][ T72] netlink_unicast+0x449/0x710 [ 1515.473358][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.473358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.473358][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.473358][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.473358][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.473358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.473358][ T72] [ 1515.474893][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1515.474893][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.474893][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.474893][ T72] ipv6_find_idev+0x102/0x170 [ 1515.474893][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.474893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.474893][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.474893][ T72] netlink_unicast+0x449/0x710 [ 1515.474893][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.474893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.474893][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.474893][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.474893][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.474893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.474893][ T72] [ 1515.476559][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1515.476836][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1515.476836][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.476836][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.476836][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.476836][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.476836][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.476836][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.476836][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.476836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.476836][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.476836][ T72] netlink_unicast+0x449/0x710 [ 1515.476836][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.476836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.476836][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.476836][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.476836][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.476836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.476836][ T72] [ 1515.478792][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1515.478792][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.478792][ T72] ipv6_find_idev+0x102/0x170 [ 1515.478792][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.478792][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.478792][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.478792][ T72] netlink_unicast+0x449/0x710 [ 1515.478792][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.478792][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.478792][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.478792][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.478792][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.478792][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.478792][ T72] [ 1515.480301][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1515.480301][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.480301][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.480301][ T72] ipv6_find_idev+0x102/0x170 [ 1515.480301][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.480301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.480301][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.480301][ T72] netlink_unicast+0x449/0x710 [ 1515.480301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.480301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.480301][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.480301][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.480301][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.480301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.480301][ T72] [ 1515.481960][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1515.482244][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1515.482244][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.482244][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.482244][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.482244][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.482244][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.482244][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.482244][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.482244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.482244][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.482244][ T72] netlink_unicast+0x449/0x710 [ 1515.482244][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.482244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.482244][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.482244][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.482244][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.482244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.482244][ T72] [ 1515.484213][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1515.484213][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.484213][ T72] ipv6_find_idev+0x102/0x170 [ 1515.484213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.484213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.484213][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.484213][ T72] netlink_unicast+0x449/0x710 [ 1515.484213][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.484213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.484213][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.484213][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.484213][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.484213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.484213][ T72] [ 1515.485776][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1515.485776][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.485776][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.485776][ T72] ipv6_find_idev+0x102/0x170 [ 1515.485776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.485776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.485776][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.485776][ T72] netlink_unicast+0x449/0x710 [ 1515.485776][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.485776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.485776][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.485776][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.485776][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.485776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.485776][ T72] [ 1515.487448][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1515.487711][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1515.487711][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.487711][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.487711][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.487711][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.487711][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.487711][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.487711][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.487711][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.487711][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.487711][ T72] netlink_unicast+0x449/0x710 [ 1515.487711][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.487711][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.487711][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.487711][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.487711][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.487711][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.487711][ T72] [ 1515.489698][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1515.489698][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.489698][ T72] ipv6_find_idev+0x102/0x170 [ 1515.489698][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.489698][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.489698][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.489698][ T72] netlink_unicast+0x449/0x710 [ 1515.489698][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.489698][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.489698][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.489698][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.489698][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.489698][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.489698][ T72] [ 1515.491219][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1515.491219][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.491219][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.491219][ T72] ipv6_find_idev+0x102/0x170 [ 1515.491219][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.491219][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.491219][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.491219][ T72] netlink_unicast+0x449/0x710 [ 1515.491219][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.491219][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.491219][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.491219][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.491219][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.491219][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.491219][ T72] [ 1515.493300][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1515.493562][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1515.493562][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.493562][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.493562][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.493562][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.493562][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.493562][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.493562][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.493562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.493562][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.493562][ T72] netlink_unicast+0x449/0x710 [ 1515.493562][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.493562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.493562][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.493562][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.493562][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.493562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.493562][ T72] [ 1515.495525][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1515.495525][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.495525][ T72] ipv6_find_idev+0x102/0x170 [ 1515.495525][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.495525][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.495525][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.495525][ T72] netlink_unicast+0x449/0x710 [ 1515.495525][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.495525][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.495525][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.495525][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.495525][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.495525][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.495525][ T72] [ 1515.497035][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1515.497035][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.497035][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.497035][ T72] ipv6_find_idev+0x102/0x170 [ 1515.497035][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.497035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.497035][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.497035][ T72] netlink_unicast+0x449/0x710 [ 1515.497035][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.497035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.497035][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.497035][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.497035][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.497035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.497035][ T72] [ 1515.498783][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1515.499059][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1515.499059][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.499059][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.499059][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.499059][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.499059][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.499059][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.499059][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.499059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.499059][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.499059][ T72] netlink_unicast+0x449/0x710 [ 1515.499059][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.499059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.499059][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.499059][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.499059][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.499059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.499059][ T72] [ 1515.501091][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1515.501091][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.501091][ T72] ipv6_find_idev+0x102/0x170 [ 1515.501091][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.501091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.501091][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.501091][ T72] netlink_unicast+0x449/0x710 [ 1515.501091][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.501091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.501091][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.501091][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.501091][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.501091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.501091][ T72] [ 1515.502812][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1515.502812][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.502812][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.502812][ T72] ipv6_find_idev+0x102/0x170 [ 1515.502812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.502812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.502812][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.502812][ T72] netlink_unicast+0x449/0x710 [ 1515.502812][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.502812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.502812][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.502812][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.502812][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.502812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.502812][ T72] [ 1515.504803][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1515.505067][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1515.505067][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.505067][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.505067][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.505067][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.505067][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.505067][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.505067][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.505067][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.505067][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.505067][ T72] netlink_unicast+0x449/0x710 [ 1515.505067][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.505067][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.505067][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.505067][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.505067][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.505067][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.505067][ T72] [ 1515.507228][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1515.507228][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.507228][ T72] ipv6_find_idev+0x102/0x170 [ 1515.507228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.507228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.507228][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.507228][ T72] netlink_unicast+0x449/0x710 [ 1515.507228][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.507228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.507228][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.507228][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.507228][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.507228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.507228][ T72] [ 1515.508920][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1515.508920][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.508920][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.508920][ T72] ipv6_find_idev+0x102/0x170 [ 1515.508920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.508920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.508920][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.508920][ T72] netlink_unicast+0x449/0x710 [ 1515.508920][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.508920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.508920][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.508920][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.508920][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.508920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.508920][ T72] [ 1515.510817][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1515.511080][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1515.511080][ T72] netdev_get_by_index+0x5e/0x80 [ 1515.511080][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1515.511080][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1515.511080][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1515.511080][ T72] ipv6_add_addr+0x411/0x2000 [ 1515.511080][ T72] inet6_addr_add+0x30e/0xa40 [ 1515.511080][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1515.511080][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.511080][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.511080][ T72] netlink_unicast+0x449/0x710 [ 1515.511080][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.511080][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.511080][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.511080][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.511080][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.511080][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.511080][ T72] [ 1515.513298][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1515.513298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1515.513298][ T72] ipv6_find_idev+0x102/0x170 [ 1515.513298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.513298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.513298][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.513298][ T72] netlink_unicast+0x449/0x710 [ 1515.513298][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.513298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.513298][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.513298][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.513298][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.513298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.513298][ T72] [ 1515.515070][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1515.515070][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1515.515070][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1515.515070][ T72] ipv6_find_idev+0x102/0x170 [ 1515.515070][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1515.515070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1515.515070][ T72] netlink_rcv_skb+0x130/0x360 [ 1515.515070][ T72] netlink_unicast+0x449/0x710 [ 1515.515070][ T72] netlink_sendmsg+0x723/0xbe0 [ 1515.515070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1515.515070][ T72] ___sys_sendmsg+0xee/0x170 [ 1515.515070][ T72] __sys_sendmsg+0xcd/0x170 [ 1515.515070][ T72] do_syscall_64+0xc6/0x1e0 [ 1515.515070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1515.515070][ T72] [ 1525.614841][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1525.615342][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1525.615342][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.615342][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.615342][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.615342][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.615342][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.615342][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.615342][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.615342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.615342][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.615342][ T72] netlink_unicast+0x449/0x710 [ 1525.615342][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.615342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.615342][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.615342][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.615342][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.615342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.615342][ T72] [ 1525.617334][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1525.617334][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.617334][ T72] ipv6_find_idev+0x102/0x170 [ 1525.617334][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.617334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.617334][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.617334][ T72] netlink_unicast+0x449/0x710 [ 1525.617334][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.617334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.617334][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.617334][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.617334][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.617334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.617334][ T72] [ 1525.618859][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1525.618859][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.618859][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.618859][ T72] ipv6_find_idev+0x102/0x170 [ 1525.618859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.618859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.618859][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.618859][ T72] netlink_unicast+0x449/0x710 [ 1525.618859][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.618859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.618859][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.618859][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.618859][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.618859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.618859][ T72] [ 1525.620550][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1525.620829][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1525.620829][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.620829][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.620829][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.620829][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.620829][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.620829][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.620829][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.620829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.620829][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.620829][ T72] netlink_unicast+0x449/0x710 [ 1525.620829][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.620829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.620829][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.620829][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.620829][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.620829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.620829][ T72] [ 1525.622800][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1525.622800][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.622800][ T72] ipv6_find_idev+0x102/0x170 [ 1525.622800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.622800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.622800][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.622800][ T72] netlink_unicast+0x449/0x710 [ 1525.622800][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.622800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.622800][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.622800][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.622800][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.622800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.622800][ T72] [ 1525.624322][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1525.624322][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.624322][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.624322][ T72] ipv6_find_idev+0x102/0x170 [ 1525.624322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.624322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.624322][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.624322][ T72] netlink_unicast+0x449/0x710 [ 1525.624322][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.624322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.624322][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.624322][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.624322][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.624322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.624322][ T72] [ 1525.625977][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1525.626236][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1525.626236][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.626236][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.626236][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.626236][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.626236][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.626236][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.626236][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.626236][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.626236][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.626236][ T72] netlink_unicast+0x449/0x710 [ 1525.626236][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.626236][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.626236][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.626236][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.626236][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.626236][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.626236][ T72] [ 1525.628203][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1525.628203][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.628203][ T72] ipv6_find_idev+0x102/0x170 [ 1525.628203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.628203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.628203][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.628203][ T72] netlink_unicast+0x449/0x710 [ 1525.628203][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.628203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.628203][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.628203][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.628203][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.628203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.628203][ T72] [ 1525.629716][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1525.629716][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.629716][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.629716][ T72] ipv6_find_idev+0x102/0x170 [ 1525.629716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.629716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.629716][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.629716][ T72] netlink_unicast+0x449/0x710 [ 1525.629716][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.629716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.629716][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.629716][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.629716][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.629716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.629716][ T72] [ 1525.631369][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1525.631628][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1525.631628][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.631628][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.631628][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.631628][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.631628][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.631628][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.631628][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.631628][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.631628][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.631628][ T72] netlink_unicast+0x449/0x710 [ 1525.631628][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.631628][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.631628][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.631628][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.631628][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.631628][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.631628][ T72] [ 1525.633588][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1525.633588][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.633588][ T72] ipv6_find_idev+0x102/0x170 [ 1525.633588][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.633588][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.633588][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.633588][ T72] netlink_unicast+0x449/0x710 [ 1525.633588][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.633588][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.633588][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.633588][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.633588][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.633588][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.633588][ T72] [ 1525.635114][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1525.635114][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.635114][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.635114][ T72] ipv6_find_idev+0x102/0x170 [ 1525.635114][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.635114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.635114][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.635114][ T72] netlink_unicast+0x449/0x710 [ 1525.635114][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.635114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.635114][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.635114][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.635114][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.635114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.635114][ T72] [ 1525.637170][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1525.637429][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1525.637429][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.637429][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.637429][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.637429][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.637429][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.637429][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.637429][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.637429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.637429][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.637429][ T72] netlink_unicast+0x449/0x710 [ 1525.637429][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.637429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.637429][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.637429][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.637429][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.637429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.637429][ T72] [ 1525.639398][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1525.639398][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.639398][ T72] ipv6_find_idev+0x102/0x170 [ 1525.639398][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.639398][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.639398][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.639398][ T72] netlink_unicast+0x449/0x710 [ 1525.639398][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.639398][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.639398][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.639398][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.639398][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.639398][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.639398][ T72] [ 1525.640916][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1525.640916][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.640916][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.640916][ T72] ipv6_find_idev+0x102/0x170 [ 1525.640916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.640916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.640916][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.640916][ T72] netlink_unicast+0x449/0x710 [ 1525.640916][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.640916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.640916][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.640916][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.640916][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.640916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.640916][ T72] [ 1525.642617][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1525.642927][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1525.642927][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.642927][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.642927][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.642927][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.642927][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.642927][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.642927][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.642927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.642927][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.642927][ T72] netlink_unicast+0x449/0x710 [ 1525.642927][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.642927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.642927][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.642927][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.642927][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.642927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.642927][ T72] [ 1525.645034][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1525.645034][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.645034][ T72] ipv6_find_idev+0x102/0x170 [ 1525.645034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.645034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.645034][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.645034][ T72] netlink_unicast+0x449/0x710 [ 1525.645034][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.645034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.645034][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.645034][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.645034][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.645034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.645034][ T72] [ 1525.646729][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1525.646729][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.646729][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.646729][ T72] ipv6_find_idev+0x102/0x170 [ 1525.646729][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.646729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.646729][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.646729][ T72] netlink_unicast+0x449/0x710 [ 1525.646729][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.646729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.646729][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.646729][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.646729][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.646729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.646729][ T72] [ 1525.648599][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1525.648909][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1525.648909][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.648909][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.648909][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.648909][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.648909][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.648909][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.648909][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.648909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.648909][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.648909][ T72] netlink_unicast+0x449/0x710 [ 1525.648909][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.648909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.648909][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.648909][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.648909][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.648909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.648909][ T72] [ 1525.651117][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1525.651117][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.651117][ T72] ipv6_find_idev+0x102/0x170 [ 1525.651117][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.651117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.651117][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.651117][ T72] netlink_unicast+0x449/0x710 [ 1525.651117][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.651117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.651117][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.651117][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.651117][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.651117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.651117][ T72] [ 1525.652808][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1525.652808][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.652808][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.652808][ T72] ipv6_find_idev+0x102/0x170 [ 1525.652808][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.652808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.652808][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.652808][ T72] netlink_unicast+0x449/0x710 [ 1525.652808][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.652808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.652808][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.652808][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.652808][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.652808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.652808][ T72] [ 1525.654683][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1525.655003][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1525.655003][ T72] netdev_get_by_index+0x5e/0x80 [ 1525.655003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1525.655003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1525.655003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1525.655003][ T72] ipv6_add_addr+0x411/0x2000 [ 1525.655003][ T72] inet6_addr_add+0x30e/0xa40 [ 1525.655003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1525.655003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.655003][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.655003][ T72] netlink_unicast+0x449/0x710 [ 1525.655003][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.655003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.655003][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.655003][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.655003][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.655003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.655003][ T72] [ 1525.657156][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1525.657156][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1525.657156][ T72] ipv6_find_idev+0x102/0x170 [ 1525.657156][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.657156][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.657156][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.657156][ T72] netlink_unicast+0x449/0x710 [ 1525.657156][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.657156][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.657156][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.657156][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.657156][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.657156][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.657156][ T72] [ 1525.658847][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1525.658847][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1525.658847][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1525.658847][ T72] ipv6_find_idev+0x102/0x170 [ 1525.658847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1525.658847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1525.658847][ T72] netlink_rcv_skb+0x130/0x360 [ 1525.658847][ T72] netlink_unicast+0x449/0x710 [ 1525.658847][ T72] netlink_sendmsg+0x723/0xbe0 [ 1525.658847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1525.658847][ T72] ___sys_sendmsg+0xee/0x170 [ 1525.658847][ T72] __sys_sendmsg+0xcd/0x170 [ 1525.658847][ T72] do_syscall_64+0xc6/0x1e0 [ 1525.658847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1525.658847][ T72] [ 1535.662901][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1535.663366][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1535.663366][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.663366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.663366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.663366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.663366][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.663366][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.663366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.663366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.663366][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.663366][ T72] netlink_unicast+0x449/0x710 [ 1535.663366][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.663366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.663366][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.663366][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.663366][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.663366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.663366][ T72] [ 1535.665365][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1535.665365][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.665365][ T72] ipv6_find_idev+0x102/0x170 [ 1535.665365][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.665365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.665365][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.665365][ T72] netlink_unicast+0x449/0x710 [ 1535.665365][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.665365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.665365][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.665365][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.665365][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.665365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.665365][ T72] [ 1535.666883][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1535.666883][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.666883][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.666883][ T72] ipv6_find_idev+0x102/0x170 [ 1535.666883][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.666883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.666883][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.666883][ T72] netlink_unicast+0x449/0x710 [ 1535.666883][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.666883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.666883][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.666883][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.666883][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.666883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.666883][ T72] [ 1535.668595][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1535.668880][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1535.668880][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.668880][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.668880][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.668880][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.668880][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.668880][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.668880][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.668880][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.668880][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.668880][ T72] netlink_unicast+0x449/0x710 [ 1535.668880][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.668880][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.668880][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.668880][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.668880][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.668880][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.668880][ T72] [ 1535.670859][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1535.670859][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.670859][ T72] ipv6_find_idev+0x102/0x170 [ 1535.670859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.670859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.670859][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.670859][ T72] netlink_unicast+0x449/0x710 [ 1535.670859][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.670859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.670859][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.670859][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.670859][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.670859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.670859][ T72] [ 1535.672378][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1535.672378][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.672378][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.672378][ T72] ipv6_find_idev+0x102/0x170 [ 1535.672378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.672378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.672378][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.672378][ T72] netlink_unicast+0x449/0x710 [ 1535.672378][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.672378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.672378][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.672378][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.672378][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.672378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.672378][ T72] [ 1535.674041][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1535.674300][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1535.674300][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.674300][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.674300][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.674300][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.674300][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.674300][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.674300][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.674300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.674300][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.674300][ T72] netlink_unicast+0x449/0x710 [ 1535.674300][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.674300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.674300][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.674300][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.674300][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.674300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.674300][ T72] [ 1535.676269][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1535.676269][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.676269][ T72] ipv6_find_idev+0x102/0x170 [ 1535.676269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.676269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.676269][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.676269][ T72] netlink_unicast+0x449/0x710 [ 1535.676269][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.676269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.676269][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.676269][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.676269][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.676269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.676269][ T72] [ 1535.677774][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1535.677774][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.677774][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.677774][ T72] ipv6_find_idev+0x102/0x170 [ 1535.677774][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.677774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.677774][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.677774][ T72] netlink_unicast+0x449/0x710 [ 1535.677774][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.677774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.677774][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.677774][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.677774][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.677774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.677774][ T72] [ 1535.679421][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1535.679678][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1535.679678][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.679678][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.679678][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.679678][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.679678][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.679678][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.679678][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.679678][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.679678][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.679678][ T72] netlink_unicast+0x449/0x710 [ 1535.679678][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.679678][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.679678][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.679678][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.679678][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.679678][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.679678][ T72] [ 1535.681643][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1535.681643][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.681643][ T72] ipv6_find_idev+0x102/0x170 [ 1535.681643][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.681643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.681643][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.681643][ T72] netlink_unicast+0x449/0x710 [ 1535.681643][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.681643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.681643][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.681643][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.681643][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.681643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.681643][ T72] [ 1535.683151][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1535.683151][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.683151][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.683151][ T72] ipv6_find_idev+0x102/0x170 [ 1535.683151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.683151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.683151][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.683151][ T72] netlink_unicast+0x449/0x710 [ 1535.683151][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.683151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.683151][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.683151][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.683151][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.683151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.683151][ T72] [ 1535.685206][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1535.685467][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1535.685467][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.685467][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.685467][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.685467][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.685467][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.685467][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.685467][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.685467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.685467][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.685467][ T72] netlink_unicast+0x449/0x710 [ 1535.685467][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.685467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.685467][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.685467][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.685467][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.685467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.685467][ T72] [ 1535.687416][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1535.687416][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.687416][ T72] ipv6_find_idev+0x102/0x170 [ 1535.687416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.687416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.687416][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.687416][ T72] netlink_unicast+0x449/0x710 [ 1535.687416][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.687416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.687416][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.687416][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.687416][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.687416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.687416][ T72] [ 1535.688920][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1535.688920][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.688920][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.688920][ T72] ipv6_find_idev+0x102/0x170 [ 1535.688920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.688920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.688920][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.688920][ T72] netlink_unicast+0x449/0x710 [ 1535.688920][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.688920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.688920][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.688920][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.688920][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.688920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.688920][ T72] [ 1535.690604][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1535.690913][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1535.690913][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.690913][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.690913][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.690913][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.690913][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.690913][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.690913][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.690913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.690913][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.690913][ T72] netlink_unicast+0x449/0x710 [ 1535.690913][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.690913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.690913][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.690913][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.690913][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.690913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.690913][ T72] [ 1535.692993][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1535.692993][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.692993][ T72] ipv6_find_idev+0x102/0x170 [ 1535.692993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.692993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.692993][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.692993][ T72] netlink_unicast+0x449/0x710 [ 1535.692993][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.692993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.692993][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.692993][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.692993][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.692993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.692993][ T72] [ 1535.694683][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1535.694683][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.694683][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.694683][ T72] ipv6_find_idev+0x102/0x170 [ 1535.694683][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.694683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.694683][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.694683][ T72] netlink_unicast+0x449/0x710 [ 1535.694683][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.694683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.694683][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.694683][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.694683][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.694683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.694683][ T72] [ 1535.696555][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1535.696871][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1535.696871][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.696871][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.696871][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.696871][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.696871][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.696871][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.696871][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.696871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.696871][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.696871][ T72] netlink_unicast+0x449/0x710 [ 1535.696871][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.696871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.696871][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.696871][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.696871][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.696871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.696871][ T72] [ 1535.699000][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1535.699000][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.699000][ T72] ipv6_find_idev+0x102/0x170 [ 1535.699000][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.699000][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.699000][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.699000][ T72] netlink_unicast+0x449/0x710 [ 1535.699000][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.699000][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.699000][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.699000][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.699000][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.699000][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.699000][ T72] [ 1535.700749][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1535.700749][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.700749][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.700749][ T72] ipv6_find_idev+0x102/0x170 [ 1535.700749][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.700749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.700749][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.700749][ T72] netlink_unicast+0x449/0x710 [ 1535.700749][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.700749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.700749][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.700749][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.700749][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.700749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.700749][ T72] [ 1535.702610][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1535.702926][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1535.702926][ T72] netdev_get_by_index+0x5e/0x80 [ 1535.702926][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1535.702926][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1535.702926][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1535.702926][ T72] ipv6_add_addr+0x411/0x2000 [ 1535.702926][ T72] inet6_addr_add+0x30e/0xa40 [ 1535.702926][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1535.702926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.702926][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.702926][ T72] netlink_unicast+0x449/0x710 [ 1535.702926][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.702926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.702926][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.702926][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.702926][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.702926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.702926][ T72] [ 1535.705167][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1535.705167][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1535.705167][ T72] ipv6_find_idev+0x102/0x170 [ 1535.705167][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.705167][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.705167][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.705167][ T72] netlink_unicast+0x449/0x710 [ 1535.705167][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.705167][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.705167][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.705167][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.705167][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.705167][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.705167][ T72] [ 1535.706850][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1535.706850][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1535.706850][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1535.706850][ T72] ipv6_find_idev+0x102/0x170 [ 1535.706850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1535.706850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1535.706850][ T72] netlink_rcv_skb+0x130/0x360 [ 1535.706850][ T72] netlink_unicast+0x449/0x710 [ 1535.706850][ T72] netlink_sendmsg+0x723/0xbe0 [ 1535.706850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1535.706850][ T72] ___sys_sendmsg+0xee/0x170 [ 1535.706850][ T72] __sys_sendmsg+0xcd/0x170 [ 1535.706850][ T72] do_syscall_64+0xc6/0x1e0 [ 1535.706850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1535.706850][ T72] [ 1545.950935][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1545.951407][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1545.951407][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.951407][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.951407][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.951407][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.951407][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.951407][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.951407][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.951407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.951407][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.951407][ T72] netlink_unicast+0x449/0x710 [ 1545.951407][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.951407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.951407][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.951407][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.951407][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.951407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.951407][ T72] [ 1545.953389][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1545.953389][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.953389][ T72] ipv6_find_idev+0x102/0x170 [ 1545.953389][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.953389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.953389][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.953389][ T72] netlink_unicast+0x449/0x710 [ 1545.953389][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.953389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.953389][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.953389][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.953389][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.953389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.953389][ T72] [ 1545.954924][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1545.954924][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.954924][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.954924][ T72] ipv6_find_idev+0x102/0x170 [ 1545.954924][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.954924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.954924][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.954924][ T72] netlink_unicast+0x449/0x710 [ 1545.954924][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.954924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.954924][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.954924][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.954924][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.954924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.954924][ T72] [ 1545.956596][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1545.956893][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1545.956893][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.956893][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.956893][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.956893][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.956893][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.956893][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.956893][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.956893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.956893][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.956893][ T72] netlink_unicast+0x449/0x710 [ 1545.956893][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.956893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.956893][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.956893][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.956893][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.956893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.956893][ T72] [ 1545.958866][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1545.958866][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.958866][ T72] ipv6_find_idev+0x102/0x170 [ 1545.958866][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.958866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.958866][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.958866][ T72] netlink_unicast+0x449/0x710 [ 1545.958866][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.958866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.958866][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.958866][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.958866][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.958866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.958866][ T72] [ 1545.960388][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1545.960388][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.960388][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.960388][ T72] ipv6_find_idev+0x102/0x170 [ 1545.960388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.960388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.960388][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.960388][ T72] netlink_unicast+0x449/0x710 [ 1545.960388][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.960388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.960388][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.960388][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.960388][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.960388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.960388][ T72] [ 1545.962050][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1545.962309][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1545.962309][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.962309][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.962309][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.962309][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.962309][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.962309][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.962309][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.962309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.962309][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.962309][ T72] netlink_unicast+0x449/0x710 [ 1545.962309][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.962309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.962309][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.962309][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.962309][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.962309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.962309][ T72] [ 1545.964298][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1545.964298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.964298][ T72] ipv6_find_idev+0x102/0x170 [ 1545.964298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.964298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.964298][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.964298][ T72] netlink_unicast+0x449/0x710 [ 1545.964298][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.964298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.964298][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.964298][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.964298][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.964298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.964298][ T72] [ 1545.965863][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1545.965863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.965863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.965863][ T72] ipv6_find_idev+0x102/0x170 [ 1545.965863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.965863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.965863][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.965863][ T72] netlink_unicast+0x449/0x710 [ 1545.965863][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.965863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.965863][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.965863][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.965863][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.965863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.965863][ T72] [ 1545.967937][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1545.968196][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1545.968196][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.968196][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.968196][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.968196][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.968196][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.968196][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.968196][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.968196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.968196][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.968196][ T72] netlink_unicast+0x449/0x710 [ 1545.968196][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.968196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.968196][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.968196][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.968196][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.968196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.968196][ T72] [ 1545.970162][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1545.970162][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.970162][ T72] ipv6_find_idev+0x102/0x170 [ 1545.970162][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.970162][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.970162][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.970162][ T72] netlink_unicast+0x449/0x710 [ 1545.970162][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.970162][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.970162][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.970162][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.970162][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.970162][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.970162][ T72] [ 1545.971685][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1545.971685][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.971685][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.971685][ T72] ipv6_find_idev+0x102/0x170 [ 1545.971685][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.971685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.971685][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.971685][ T72] netlink_unicast+0x449/0x710 [ 1545.971685][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.971685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.971685][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.971685][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.971685][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.971685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.971685][ T72] [ 1545.973385][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1545.973643][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1545.973643][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.973643][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.973643][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.973643][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.973643][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.973643][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.973643][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.973643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.973643][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.973643][ T72] netlink_unicast+0x449/0x710 [ 1545.973643][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.973643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.973643][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.973643][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.973643][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.973643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.973643][ T72] [ 1545.975624][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1545.975624][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.975624][ T72] ipv6_find_idev+0x102/0x170 [ 1545.975624][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.975624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.975624][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.975624][ T72] netlink_unicast+0x449/0x710 [ 1545.975624][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.975624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.975624][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.975624][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.975624][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.975624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.975624][ T72] [ 1545.977160][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1545.977160][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.977160][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.977160][ T72] ipv6_find_idev+0x102/0x170 [ 1545.977160][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.977160][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.977160][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.977160][ T72] netlink_unicast+0x449/0x710 [ 1545.977160][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.977160][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.977160][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.977160][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.977160][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.977160][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.977160][ T72] [ 1545.978862][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1545.979129][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1545.979129][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.979129][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.979129][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.979129][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.979129][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.979129][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.979129][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.979129][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.979129][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.979129][ T72] netlink_unicast+0x449/0x710 [ 1545.979129][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.979129][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.979129][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.979129][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.979129][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.979129][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.979129][ T72] [ 1545.981222][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1545.981222][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.981222][ T72] ipv6_find_idev+0x102/0x170 [ 1545.981222][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.981222][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.981222][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.981222][ T72] netlink_unicast+0x449/0x710 [ 1545.981222][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.981222][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.981222][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.981222][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.981222][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.981222][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.981222][ T72] [ 1545.982977][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1545.982977][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.982977][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.982977][ T72] ipv6_find_idev+0x102/0x170 [ 1545.982977][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.982977][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.982977][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.982977][ T72] netlink_unicast+0x449/0x710 [ 1545.982977][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.982977][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.982977][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.982977][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.982977][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.982977][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.982977][ T72] [ 1545.984858][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1545.985118][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1545.985118][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.985118][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.985118][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.985118][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.985118][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.985118][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.985118][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.985118][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.985118][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.985118][ T72] netlink_unicast+0x449/0x710 [ 1545.985118][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.985118][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.985118][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.985118][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.985118][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.985118][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.985118][ T72] [ 1545.987323][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1545.987323][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.987323][ T72] ipv6_find_idev+0x102/0x170 [ 1545.987323][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.987323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.987323][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.987323][ T72] netlink_unicast+0x449/0x710 [ 1545.987323][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.987323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.987323][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.987323][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.987323][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.987323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.987323][ T72] [ 1545.989026][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1545.989026][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.989026][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.989026][ T72] ipv6_find_idev+0x102/0x170 [ 1545.989026][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.989026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.989026][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.989026][ T72] netlink_unicast+0x449/0x710 [ 1545.989026][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.989026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.989026][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.989026][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.989026][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.989026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.989026][ T72] [ 1545.990910][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1545.991181][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1545.991181][ T72] netdev_get_by_index+0x5e/0x80 [ 1545.991181][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1545.991181][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1545.991181][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1545.991181][ T72] ipv6_add_addr+0x411/0x2000 [ 1545.991181][ T72] inet6_addr_add+0x30e/0xa40 [ 1545.991181][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1545.991181][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.991181][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.991181][ T72] netlink_unicast+0x449/0x710 [ 1545.991181][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.991181][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.991181][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.991181][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.991181][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.991181][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.991181][ T72] [ 1545.993448][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1545.993448][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1545.993448][ T72] ipv6_find_idev+0x102/0x170 [ 1545.993448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.993448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.993448][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.993448][ T72] netlink_unicast+0x449/0x710 [ 1545.993448][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.993448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.993448][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.993448][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.993448][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.993448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.993448][ T72] [ 1545.995148][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1545.995148][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1545.995148][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1545.995148][ T72] ipv6_find_idev+0x102/0x170 [ 1545.995148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1545.995148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1545.995148][ T72] netlink_rcv_skb+0x130/0x360 [ 1545.995148][ T72] netlink_unicast+0x449/0x710 [ 1545.995148][ T72] netlink_sendmsg+0x723/0xbe0 [ 1545.995148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1545.995148][ T72] ___sys_sendmsg+0xee/0x170 [ 1545.995148][ T72] __sys_sendmsg+0xcd/0x170 [ 1545.995148][ T72] do_syscall_64+0xc6/0x1e0 [ 1545.995148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1545.995148][ T72] [ 1556.238834][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1556.239317][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1556.239317][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.239317][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.239317][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.239317][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.239317][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.239317][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.239317][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.239317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.239317][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.239317][ T72] netlink_unicast+0x449/0x710 [ 1556.239317][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.239317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.239317][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.239317][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.239317][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.239317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.239317][ T72] [ 1556.241298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1556.241298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.241298][ T72] ipv6_find_idev+0x102/0x170 [ 1556.241298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.241298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.241298][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.241298][ T72] netlink_unicast+0x449/0x710 [ 1556.241298][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.241298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.241298][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.241298][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.241298][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.241298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.241298][ T72] [ 1556.242814][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1556.242814][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.242814][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.242814][ T72] ipv6_find_idev+0x102/0x170 [ 1556.242814][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.242814][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.242814][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.242814][ T72] netlink_unicast+0x449/0x710 [ 1556.242814][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.242814][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.242814][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.242814][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.242814][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.242814][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.242814][ T72] [ 1556.244492][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1556.244756][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1556.244756][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.244756][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.244756][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.244756][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.244756][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.244756][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.244756][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.244756][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.244756][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.244756][ T72] netlink_unicast+0x449/0x710 [ 1556.244756][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.244756][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.244756][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.244756][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.244756][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.244756][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.244756][ T72] [ 1556.246712][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1556.246712][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.246712][ T72] ipv6_find_idev+0x102/0x170 [ 1556.246712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.246712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.246712][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.246712][ T72] netlink_unicast+0x449/0x710 [ 1556.246712][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.246712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.246712][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.246712][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.246712][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.246712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.246712][ T72] [ 1556.248226][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1556.248226][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.248226][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.248226][ T72] ipv6_find_idev+0x102/0x170 [ 1556.248226][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.248226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.248226][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.248226][ T72] netlink_unicast+0x449/0x710 [ 1556.248226][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.248226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.248226][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.248226][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.248226][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.248226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.248226][ T72] [ 1556.249902][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1556.250171][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1556.250171][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.250171][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.250171][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.250171][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.250171][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.250171][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.250171][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.250171][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.250171][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.250171][ T72] netlink_unicast+0x449/0x710 [ 1556.250171][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.250171][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.250171][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.250171][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.250171][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.250171][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.250171][ T72] [ 1556.252132][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1556.252132][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.252132][ T72] ipv6_find_idev+0x102/0x170 [ 1556.252132][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.252132][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.252132][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.252132][ T72] netlink_unicast+0x449/0x710 [ 1556.252132][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.252132][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.252132][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.252132][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.252132][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.252132][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.252132][ T72] [ 1556.253642][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1556.253642][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.253642][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.253642][ T72] ipv6_find_idev+0x102/0x170 [ 1556.253642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.253642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.253642][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.253642][ T72] netlink_unicast+0x449/0x710 [ 1556.253642][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.253642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.253642][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.253642][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.253642][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.253642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.253642][ T72] [ 1556.255304][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1556.255578][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1556.255578][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.255578][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.255578][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.255578][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.255578][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.255578][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.255578][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.255578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.255578][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.255578][ T72] netlink_unicast+0x449/0x710 [ 1556.255578][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.255578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.255578][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.255578][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.255578][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.255578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.255578][ T72] [ 1556.257570][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1556.257570][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.257570][ T72] ipv6_find_idev+0x102/0x170 [ 1556.257570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.257570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.257570][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.257570][ T72] netlink_unicast+0x449/0x710 [ 1556.257570][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.257570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.257570][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.257570][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.257570][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.257570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.257570][ T72] [ 1556.259086][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1556.259086][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.259086][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.259086][ T72] ipv6_find_idev+0x102/0x170 [ 1556.259086][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.259086][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.259086][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.259086][ T72] netlink_unicast+0x449/0x710 [ 1556.259086][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.259086][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.259086][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.259086][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.259086][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.259086][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.259086][ T72] [ 1556.261140][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1556.261398][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1556.261398][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.261398][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.261398][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.261398][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.261398][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.261398][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.261398][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.261398][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.261398][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.261398][ T72] netlink_unicast+0x449/0x710 [ 1556.261398][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.261398][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.261398][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.261398][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.261398][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.261398][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.261398][ T72] [ 1556.263354][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1556.263354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.263354][ T72] ipv6_find_idev+0x102/0x170 [ 1556.263354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.263354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.263354][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.263354][ T72] netlink_unicast+0x449/0x710 [ 1556.263354][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.263354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.263354][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.263354][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.263354][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.263354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.263354][ T72] [ 1556.264875][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1556.264875][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.264875][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.264875][ T72] ipv6_find_idev+0x102/0x170 [ 1556.264875][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.264875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.264875][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.264875][ T72] netlink_unicast+0x449/0x710 [ 1556.264875][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.264875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.264875][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.264875][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.264875][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.264875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.264875][ T72] [ 1556.266565][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1556.266874][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1556.266874][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.266874][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.266874][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.266874][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.266874][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.266874][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.266874][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.266874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.266874][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.266874][ T72] netlink_unicast+0x449/0x710 [ 1556.266874][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.266874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.266874][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.266874][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.266874][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.266874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.266874][ T72] [ 1556.268961][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1556.268961][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.268961][ T72] ipv6_find_idev+0x102/0x170 [ 1556.268961][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.268961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.268961][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.268961][ T72] netlink_unicast+0x449/0x710 [ 1556.268961][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.268961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.268961][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.268961][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.268961][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.268961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.268961][ T72] [ 1556.270708][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1556.270708][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.270708][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.270708][ T72] ipv6_find_idev+0x102/0x170 [ 1556.270708][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.270708][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.270708][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.270708][ T72] netlink_unicast+0x449/0x710 [ 1556.270708][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.270708][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.270708][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.270708][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.270708][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.270708][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.270708][ T72] [ 1556.272575][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1556.272882][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1556.272882][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.272882][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.272882][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.272882][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.272882][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.272882][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.272882][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.272882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.272882][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.272882][ T72] netlink_unicast+0x449/0x710 [ 1556.272882][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.272882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.272882][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.272882][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.272882][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.272882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.272882][ T72] [ 1556.275034][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1556.275034][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.275034][ T72] ipv6_find_idev+0x102/0x170 [ 1556.275034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.275034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.275034][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.275034][ T72] netlink_unicast+0x449/0x710 [ 1556.275034][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.275034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.275034][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.275034][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.275034][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.275034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.275034][ T72] [ 1556.276727][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1556.276727][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.276727][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.276727][ T72] ipv6_find_idev+0x102/0x170 [ 1556.276727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.276727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.276727][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.276727][ T72] netlink_unicast+0x449/0x710 [ 1556.276727][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.276727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.276727][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.276727][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.276727][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.276727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.276727][ T72] [ 1556.278593][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1556.278906][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1556.278906][ T72] netdev_get_by_index+0x5e/0x80 [ 1556.278906][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1556.278906][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1556.278906][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1556.278906][ T72] ipv6_add_addr+0x411/0x2000 [ 1556.278906][ T72] inet6_addr_add+0x30e/0xa40 [ 1556.278906][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1556.278906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.278906][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.278906][ T72] netlink_unicast+0x449/0x710 [ 1556.278906][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.278906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.278906][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.278906][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.278906][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.278906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.278906][ T72] [ 1556.281117][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1556.281117][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1556.281117][ T72] ipv6_find_idev+0x102/0x170 [ 1556.281117][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.281117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.281117][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.281117][ T72] netlink_unicast+0x449/0x710 [ 1556.281117][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.281117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.281117][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.281117][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.281117][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.281117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.281117][ T72] [ 1556.282835][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1556.282835][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1556.282835][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1556.282835][ T72] ipv6_find_idev+0x102/0x170 [ 1556.282835][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1556.282835][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1556.282835][ T72] netlink_rcv_skb+0x130/0x360 [ 1556.282835][ T72] netlink_unicast+0x449/0x710 [ 1556.282835][ T72] netlink_sendmsg+0x723/0xbe0 [ 1556.282835][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1556.282835][ T72] ___sys_sendmsg+0xee/0x170 [ 1556.282835][ T72] __sys_sendmsg+0xcd/0x170 [ 1556.282835][ T72] do_syscall_64+0xc6/0x1e0 [ 1556.282835][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1556.282835][ T72] [ 1566.526896][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1566.527375][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1566.527375][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.527375][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.527375][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.527375][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.527375][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.527375][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.527375][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.527375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.527375][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.527375][ T72] netlink_unicast+0x449/0x710 [ 1566.527375][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.527375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.527375][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.527375][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.527375][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.527375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.527375][ T72] [ 1566.529394][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1566.529394][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.529394][ T72] ipv6_find_idev+0x102/0x170 [ 1566.529394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.529394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.529394][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.529394][ T72] netlink_unicast+0x449/0x710 [ 1566.529394][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.529394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.529394][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.529394][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.529394][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.529394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.529394][ T72] [ 1566.530938][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1566.530938][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.530938][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.530938][ T72] ipv6_find_idev+0x102/0x170 [ 1566.530938][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.530938][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.530938][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.530938][ T72] netlink_unicast+0x449/0x710 [ 1566.530938][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.530938][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.530938][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.530938][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.530938][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.530938][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.530938][ T72] [ 1566.532651][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1566.532939][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1566.532939][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.532939][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.532939][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.532939][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.532939][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.532939][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.532939][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.532939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.532939][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.532939][ T72] netlink_unicast+0x449/0x710 [ 1566.532939][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.532939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.532939][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.532939][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.532939][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.532939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.532939][ T72] [ 1566.534938][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1566.534938][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.534938][ T72] ipv6_find_idev+0x102/0x170 [ 1566.534938][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.534938][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.534938][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.534938][ T72] netlink_unicast+0x449/0x710 [ 1566.534938][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.534938][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.534938][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.534938][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.534938][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.534938][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.534938][ T72] [ 1566.536479][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1566.536479][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.536479][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.536479][ T72] ipv6_find_idev+0x102/0x170 [ 1566.536479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.536479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.536479][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.536479][ T72] netlink_unicast+0x449/0x710 [ 1566.536479][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.536479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.536479][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.536479][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.536479][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.536479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.536479][ T72] [ 1566.538182][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1566.538446][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1566.538446][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.538446][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.538446][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.538446][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.538446][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.538446][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.538446][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.538446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.538446][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.538446][ T72] netlink_unicast+0x449/0x710 [ 1566.538446][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.538446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.538446][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.538446][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.538446][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.538446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.538446][ T72] [ 1566.540457][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1566.540457][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.540457][ T72] ipv6_find_idev+0x102/0x170 [ 1566.540457][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.540457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.540457][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.540457][ T72] netlink_unicast+0x449/0x710 [ 1566.540457][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.540457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.540457][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.540457][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.540457][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.540457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.540457][ T72] [ 1566.541984][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1566.541984][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.541984][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.541984][ T72] ipv6_find_idev+0x102/0x170 [ 1566.541984][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.541984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.541984][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.541984][ T72] netlink_unicast+0x449/0x710 [ 1566.541984][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.541984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.541984][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.541984][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.541984][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.541984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.541984][ T72] [ 1566.543674][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1566.544382][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1566.544382][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.544382][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.544382][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.544382][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.544382][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.544382][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.544382][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.544382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.544382][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.544382][ T72] netlink_unicast+0x449/0x710 [ 1566.544382][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.544382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.544382][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.544382][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.544382][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.544382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.544382][ T72] [ 1566.546366][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1566.546366][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.546366][ T72] ipv6_find_idev+0x102/0x170 [ 1566.546366][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.546366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.546366][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.546366][ T72] netlink_unicast+0x449/0x710 [ 1566.546366][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.546366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.546366][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.546366][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.546366][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.546366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.546366][ T72] [ 1566.547898][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1566.547898][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.547898][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.547898][ T72] ipv6_find_idev+0x102/0x170 [ 1566.547898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.547898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.547898][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.547898][ T72] netlink_unicast+0x449/0x710 [ 1566.547898][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.547898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.547898][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.547898][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.547898][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.547898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.547898][ T72] [ 1566.549614][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1566.549929][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1566.549929][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.549929][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.549929][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.549929][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.549929][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.549929][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.549929][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.549929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.549929][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.549929][ T72] netlink_unicast+0x449/0x710 [ 1566.549929][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.549929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.549929][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.549929][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.549929][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.549929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.549929][ T72] [ 1566.551918][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1566.551918][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.551918][ T72] ipv6_find_idev+0x102/0x170 [ 1566.551918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.551918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.551918][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.551918][ T72] netlink_unicast+0x449/0x710 [ 1566.551918][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.551918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.551918][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.551918][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.551918][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.551918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.551918][ T72] [ 1566.553447][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1566.553447][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.553447][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.553447][ T72] ipv6_find_idev+0x102/0x170 [ 1566.553447][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.553447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.553447][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.553447][ T72] netlink_unicast+0x449/0x710 [ 1566.553447][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.553447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.553447][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.553447][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.553447][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.553447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.553447][ T72] [ 1566.555177][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1566.555492][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1566.555492][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.555492][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.555492][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.555492][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.555492][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.555492][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.555492][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.555492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.555492][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.555492][ T72] netlink_unicast+0x449/0x710 [ 1566.555492][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.555492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.555492][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.555492][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.555492][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.555492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.555492][ T72] [ 1566.557477][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1566.557477][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.557477][ T72] ipv6_find_idev+0x102/0x170 [ 1566.557477][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.557477][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.557477][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.557477][ T72] netlink_unicast+0x449/0x710 [ 1566.557477][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.557477][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.557477][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.557477][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.557477][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.557477][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.557477][ T72] [ 1566.559202][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1566.559202][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.559202][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.559202][ T72] ipv6_find_idev+0x102/0x170 [ 1566.559202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.559202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.559202][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.559202][ T72] netlink_unicast+0x449/0x710 [ 1566.559202][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.559202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.559202][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.559202][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.559202][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.559202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.559202][ T72] [ 1566.561230][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1566.561535][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1566.561535][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.561535][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.561535][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.561535][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.561535][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.561535][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.561535][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.561535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.561535][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.561535][ T72] netlink_unicast+0x449/0x710 [ 1566.561535][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.561535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.561535][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.561535][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.561535][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.561535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.561535][ T72] [ 1566.563718][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1566.563718][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.563718][ T72] ipv6_find_idev+0x102/0x170 [ 1566.563718][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.563718][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.563718][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.563718][ T72] netlink_unicast+0x449/0x710 [ 1566.563718][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.563718][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.563718][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.563718][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.563718][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.563718][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.563718][ T72] [ 1566.565431][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1566.565431][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.565431][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.565431][ T72] ipv6_find_idev+0x102/0x170 [ 1566.565431][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.565431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.565431][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.565431][ T72] netlink_unicast+0x449/0x710 [ 1566.565431][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.565431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.565431][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.565431][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.565431][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.565431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.565431][ T72] [ 1566.567337][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1566.567649][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1566.567649][ T72] netdev_get_by_index+0x5e/0x80 [ 1566.567649][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1566.567649][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1566.567649][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1566.567649][ T72] ipv6_add_addr+0x411/0x2000 [ 1566.567649][ T72] inet6_addr_add+0x30e/0xa40 [ 1566.567649][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1566.567649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.567649][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.567649][ T72] netlink_unicast+0x449/0x710 [ 1566.567649][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.567649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.567649][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.567649][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.567649][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.567649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.567649][ T72] [ 1566.569813][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1566.569813][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1566.569813][ T72] ipv6_find_idev+0x102/0x170 [ 1566.569813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.569813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.569813][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.569813][ T72] netlink_unicast+0x449/0x710 [ 1566.569813][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.569813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.569813][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.569813][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.569813][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.569813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.569813][ T72] [ 1566.571589][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1566.571589][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1566.571589][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1566.571589][ T72] ipv6_find_idev+0x102/0x170 [ 1566.571589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1566.571589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1566.571589][ T72] netlink_rcv_skb+0x130/0x360 [ 1566.571589][ T72] netlink_unicast+0x449/0x710 [ 1566.571589][ T72] netlink_sendmsg+0x723/0xbe0 [ 1566.571589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1566.571589][ T72] ___sys_sendmsg+0xee/0x170 [ 1566.571589][ T72] __sys_sendmsg+0xcd/0x170 [ 1566.571589][ T72] do_syscall_64+0xc6/0x1e0 [ 1566.571589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1566.571589][ T72] [ 1576.814860][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1576.815336][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1576.815336][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.815336][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.815336][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.815336][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.815336][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.815336][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.815336][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.815336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.815336][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.815336][ T72] netlink_unicast+0x449/0x710 [ 1576.815336][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.815336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.815336][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.815336][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.815336][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.815336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.815336][ T72] [ 1576.817344][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1576.817344][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.817344][ T72] ipv6_find_idev+0x102/0x170 [ 1576.817344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.817344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.817344][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.817344][ T72] netlink_unicast+0x449/0x710 [ 1576.817344][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.817344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.817344][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.817344][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.817344][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.817344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.817344][ T72] [ 1576.818885][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1576.818885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.818885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.818885][ T72] ipv6_find_idev+0x102/0x170 [ 1576.818885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.818885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.818885][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.818885][ T72] netlink_unicast+0x449/0x710 [ 1576.818885][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.818885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.818885][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.818885][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.818885][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.818885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.818885][ T72] [ 1576.820593][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1576.820882][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1576.820882][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.820882][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.820882][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.820882][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.820882][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.820882][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.820882][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.820882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.820882][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.820882][ T72] netlink_unicast+0x449/0x710 [ 1576.820882][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.820882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.820882][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.820882][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.820882][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.820882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.820882][ T72] [ 1576.822872][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1576.822872][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.822872][ T72] ipv6_find_idev+0x102/0x170 [ 1576.822872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.822872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.822872][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.822872][ T72] netlink_unicast+0x449/0x710 [ 1576.822872][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.822872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.822872][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.822872][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.822872][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.822872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.822872][ T72] [ 1576.824930][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1576.824930][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.824930][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.824930][ T72] ipv6_find_idev+0x102/0x170 [ 1576.824930][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.824930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.824930][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.824930][ T72] netlink_unicast+0x449/0x710 [ 1576.824930][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.824930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.824930][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.824930][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.824930][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.824930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.824930][ T72] [ 1576.826623][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1576.826901][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1576.826901][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.826901][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.826901][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.826901][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.826901][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.826901][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.826901][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.826901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.826901][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.826901][ T72] netlink_unicast+0x449/0x710 [ 1576.826901][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.826901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.826901][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.826901][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.826901][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.826901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.826901][ T72] [ 1576.828900][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1576.828900][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.828900][ T72] ipv6_find_idev+0x102/0x170 [ 1576.828900][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.828900][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.828900][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.828900][ T72] netlink_unicast+0x449/0x710 [ 1576.828900][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.828900][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.828900][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.828900][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.828900][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.828900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.828900][ T72] [ 1576.830823][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1576.830823][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.830823][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.830823][ T72] ipv6_find_idev+0x102/0x170 [ 1576.830823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.830823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.830823][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.830823][ T72] netlink_unicast+0x449/0x710 [ 1576.830823][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.830823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.830823][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.830823][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.830823][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.830823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.830823][ T72] [ 1576.832507][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1576.832776][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1576.832776][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.832776][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.832776][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.832776][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.832776][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.832776][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.832776][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.832776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.832776][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.832776][ T72] netlink_unicast+0x449/0x710 [ 1576.832776][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.832776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.832776][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.832776][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.832776][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.832776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.832776][ T72] [ 1576.834781][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1576.834781][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.834781][ T72] ipv6_find_idev+0x102/0x170 [ 1576.834781][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.834781][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.834781][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.834781][ T72] netlink_unicast+0x449/0x710 [ 1576.834781][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.834781][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.834781][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.834781][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.834781][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.834781][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.834781][ T72] [ 1576.836329][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1576.836329][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.836329][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.836329][ T72] ipv6_find_idev+0x102/0x170 [ 1576.836329][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.836329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.836329][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.836329][ T72] netlink_unicast+0x449/0x710 [ 1576.836329][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.836329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.836329][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.836329][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.836329][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.836329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.836329][ T72] [ 1576.838407][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1576.839009][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1576.839009][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.839009][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.839009][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.839009][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.839009][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.839009][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.839009][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.839009][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.839009][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.839009][ T72] netlink_unicast+0x449/0x710 [ 1576.839009][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.839009][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.839009][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.839009][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.839009][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.839009][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.839009][ T72] [ 1576.841001][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1576.841001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.841001][ T72] ipv6_find_idev+0x102/0x170 [ 1576.841001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.841001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.841001][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.841001][ T72] netlink_unicast+0x449/0x710 [ 1576.841001][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.841001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.841001][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.841001][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.841001][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.841001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.841001][ T72] [ 1576.842546][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1576.842546][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.842546][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.842546][ T72] ipv6_find_idev+0x102/0x170 [ 1576.842546][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.842546][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.842546][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.842546][ T72] netlink_unicast+0x449/0x710 [ 1576.842546][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.842546][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.842546][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.842546][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.842546][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.842546][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.842546][ T72] [ 1576.844234][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1576.844501][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1576.844501][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.844501][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.844501][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.844501][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.844501][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.844501][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.844501][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.844501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.844501][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.844501][ T72] netlink_unicast+0x449/0x710 [ 1576.844501][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.844501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.844501][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.844501][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.844501][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.844501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.844501][ T72] [ 1576.846493][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1576.846493][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.846493][ T72] ipv6_find_idev+0x102/0x170 [ 1576.846493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.846493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.846493][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.846493][ T72] netlink_unicast+0x449/0x710 [ 1576.846493][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.846493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.846493][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.846493][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.846493][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.846493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.846493][ T72] [ 1576.848087][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1576.848087][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.848087][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.848087][ T72] ipv6_find_idev+0x102/0x170 [ 1576.848087][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.848087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.848087][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.848087][ T72] netlink_unicast+0x449/0x710 [ 1576.848087][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.848087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.848087][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.848087][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.848087][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.848087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.848087][ T72] [ 1576.850003][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1576.850309][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1576.850309][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.850309][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.850309][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.850309][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.850309][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.850309][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.850309][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.850309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.850309][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.850309][ T72] netlink_unicast+0x449/0x710 [ 1576.850309][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.850309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.850309][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.850309][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.850309][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.850309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.850309][ T72] [ 1576.852475][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1576.852475][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.852475][ T72] ipv6_find_idev+0x102/0x170 [ 1576.852475][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.852475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.852475][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.852475][ T72] netlink_unicast+0x449/0x710 [ 1576.852475][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.852475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.852475][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.852475][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.852475][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.852475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.852475][ T72] [ 1576.854251][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1576.854251][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.854251][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.854251][ T72] ipv6_find_idev+0x102/0x170 [ 1576.854251][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.854251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.854251][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.854251][ T72] netlink_unicast+0x449/0x710 [ 1576.854251][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.854251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.854251][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.854251][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.854251][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.854251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.854251][ T72] [ 1576.856222][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1576.856548][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1576.856548][ T72] netdev_get_by_index+0x5e/0x80 [ 1576.856548][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1576.856548][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1576.856548][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1576.856548][ T72] ipv6_add_addr+0x411/0x2000 [ 1576.856548][ T72] inet6_addr_add+0x30e/0xa40 [ 1576.856548][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1576.856548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.856548][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.856548][ T72] netlink_unicast+0x449/0x710 [ 1576.856548][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.856548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.856548][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.856548][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.856548][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.856548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.856548][ T72] [ 1576.858724][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1576.858724][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1576.858724][ T72] ipv6_find_idev+0x102/0x170 [ 1576.858724][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.858724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.858724][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.858724][ T72] netlink_unicast+0x449/0x710 [ 1576.858724][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.858724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.858724][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.858724][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.858724][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.858724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.858724][ T72] [ 1576.860438][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1576.860438][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1576.860438][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1576.860438][ T72] ipv6_find_idev+0x102/0x170 [ 1576.860438][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1576.860438][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1576.860438][ T72] netlink_rcv_skb+0x130/0x360 [ 1576.860438][ T72] netlink_unicast+0x449/0x710 [ 1576.860438][ T72] netlink_sendmsg+0x723/0xbe0 [ 1576.860438][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1576.860438][ T72] ___sys_sendmsg+0xee/0x170 [ 1576.860438][ T72] __sys_sendmsg+0xcd/0x170 [ 1576.860438][ T72] do_syscall_64+0xc6/0x1e0 [ 1576.860438][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1576.860438][ T72] [ 1587.102883][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1587.103358][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1587.103358][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.103358][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.103358][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.103358][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.103358][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.103358][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.103358][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.103358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.103358][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.103358][ T72] netlink_unicast+0x449/0x710 [ 1587.103358][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.103358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.103358][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.103358][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.103358][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.103358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.103358][ T72] [ 1587.105375][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1587.105375][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.105375][ T72] ipv6_find_idev+0x102/0x170 [ 1587.105375][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.105375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.105375][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.105375][ T72] netlink_unicast+0x449/0x710 [ 1587.105375][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.105375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.105375][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.105375][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.105375][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.105375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.105375][ T72] [ 1587.106911][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1587.106911][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.106911][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.106911][ T72] ipv6_find_idev+0x102/0x170 [ 1587.106911][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.106911][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.106911][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.106911][ T72] netlink_unicast+0x449/0x710 [ 1587.106911][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.106911][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.106911][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.106911][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.106911][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.106911][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.106911][ T72] [ 1587.108606][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1587.108892][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1587.108892][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.108892][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.108892][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.108892][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.108892][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.108892][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.108892][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.108892][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.108892][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.108892][ T72] netlink_unicast+0x449/0x710 [ 1587.108892][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.108892][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.108892][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.108892][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.108892][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.108892][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.108892][ T72] [ 1587.110875][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1587.110875][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.110875][ T72] ipv6_find_idev+0x102/0x170 [ 1587.110875][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.110875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.110875][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.110875][ T72] netlink_unicast+0x449/0x710 [ 1587.110875][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.110875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.110875][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.110875][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.110875][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.110875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.110875][ T72] [ 1587.112406][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1587.112406][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.112406][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.112406][ T72] ipv6_find_idev+0x102/0x170 [ 1587.112406][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.112406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.112406][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.112406][ T72] netlink_unicast+0x449/0x710 [ 1587.112406][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.112406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.112406][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.112406][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.112406][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.112406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.112406][ T72] [ 1587.114105][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1587.114374][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1587.114374][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.114374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.114374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.114374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.114374][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.114374][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.114374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.114374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.114374][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.114374][ T72] netlink_unicast+0x449/0x710 [ 1587.114374][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.114374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.114374][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.114374][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.114374][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.114374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.114374][ T72] [ 1587.116352][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1587.116352][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.116352][ T72] ipv6_find_idev+0x102/0x170 [ 1587.116352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.116352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.116352][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.116352][ T72] netlink_unicast+0x449/0x710 [ 1587.116352][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.116352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.116352][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.116352][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.116352][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.116352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.116352][ T72] [ 1587.117880][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1587.117880][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.117880][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.117880][ T72] ipv6_find_idev+0x102/0x170 [ 1587.117880][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.117880][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.117880][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.117880][ T72] netlink_unicast+0x449/0x710 [ 1587.117880][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.117880][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.117880][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.117880][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.117880][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.117880][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.117880][ T72] [ 1587.119554][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1587.119889][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1587.119889][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.119889][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.119889][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.119889][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.119889][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.119889][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.119889][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.119889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.119889][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.119889][ T72] netlink_unicast+0x449/0x710 [ 1587.119889][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.119889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.119889][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.119889][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.119889][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.119889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.119889][ T72] [ 1587.122261][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1587.122261][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.122261][ T72] ipv6_find_idev+0x102/0x170 [ 1587.122261][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.122261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.122261][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.122261][ T72] netlink_unicast+0x449/0x710 [ 1587.122261][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.122261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.122261][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.122261][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.122261][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.122261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.122261][ T72] [ 1587.123819][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1587.123819][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.123819][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.123819][ T72] ipv6_find_idev+0x102/0x170 [ 1587.123819][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.123819][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.123819][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.123819][ T72] netlink_unicast+0x449/0x710 [ 1587.123819][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.123819][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.123819][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.123819][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.123819][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.123819][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.123819][ T72] [ 1587.125546][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1587.125866][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1587.125866][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.125866][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.125866][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.125866][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.125866][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.125866][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.125866][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.125866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.125866][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.125866][ T72] netlink_unicast+0x449/0x710 [ 1587.125866][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.125866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.125866][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.125866][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.125866][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.125866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.125866][ T72] [ 1587.127885][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1587.127885][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.127885][ T72] ipv6_find_idev+0x102/0x170 [ 1587.127885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.127885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.127885][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.127885][ T72] netlink_unicast+0x449/0x710 [ 1587.127885][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.127885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.127885][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.127885][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.127885][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.127885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.127885][ T72] [ 1587.129426][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1587.129426][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.129426][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.129426][ T72] ipv6_find_idev+0x102/0x170 [ 1587.129426][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.129426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.129426][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.129426][ T72] netlink_unicast+0x449/0x710 [ 1587.129426][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.129426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.129426][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.129426][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.129426][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.129426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.129426][ T72] [ 1587.131320][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1587.131651][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1587.131651][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.131651][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.131651][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.131651][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.131651][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.131651][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.131651][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.131651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.131651][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.131651][ T72] netlink_unicast+0x449/0x710 [ 1587.131651][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.131651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.131651][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.131651][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.131651][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.131651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.131651][ T72] [ 1587.133895][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1587.133895][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.133895][ T72] ipv6_find_idev+0x102/0x170 [ 1587.133895][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.133895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.133895][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.133895][ T72] netlink_unicast+0x449/0x710 [ 1587.133895][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.133895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.133895][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.133895][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.133895][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.133895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.133895][ T72] [ 1587.135608][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1587.135608][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.135608][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.135608][ T72] ipv6_find_idev+0x102/0x170 [ 1587.135608][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.135608][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.135608][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.135608][ T72] netlink_unicast+0x449/0x710 [ 1587.135608][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.135608][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.135608][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.135608][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.135608][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.135608][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.135608][ T72] [ 1587.137518][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1587.137853][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1587.137853][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.137853][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.137853][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.137853][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.137853][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.137853][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.137853][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.137853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.137853][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.137853][ T72] netlink_unicast+0x449/0x710 [ 1587.137853][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.137853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.137853][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.137853][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.137853][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.137853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.137853][ T72] [ 1587.140044][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1587.140044][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.140044][ T72] ipv6_find_idev+0x102/0x170 [ 1587.140044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.140044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.140044][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.140044][ T72] netlink_unicast+0x449/0x710 [ 1587.140044][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.140044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.140044][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.140044][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.140044][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.140044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.140044][ T72] [ 1587.141765][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1587.141765][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.141765][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.141765][ T72] ipv6_find_idev+0x102/0x170 [ 1587.141765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.141765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.141765][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.141765][ T72] netlink_unicast+0x449/0x710 [ 1587.141765][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.141765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.141765][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.141765][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.141765][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.141765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.141765][ T72] [ 1587.143750][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1587.144056][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1587.144056][ T72] netdev_get_by_index+0x5e/0x80 [ 1587.144056][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1587.144056][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1587.144056][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1587.144056][ T72] ipv6_add_addr+0x411/0x2000 [ 1587.144056][ T72] inet6_addr_add+0x30e/0xa40 [ 1587.144056][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1587.144056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.144056][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.144056][ T72] netlink_unicast+0x449/0x710 [ 1587.144056][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.144056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.144056][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.144056][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.144056][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.144056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.144056][ T72] [ 1587.146229][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1587.146229][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1587.146229][ T72] ipv6_find_idev+0x102/0x170 [ 1587.146229][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.146229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.146229][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.146229][ T72] netlink_unicast+0x449/0x710 [ 1587.146229][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.146229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.146229][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.146229][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.146229][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.146229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.146229][ T72] [ 1587.147953][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1587.147953][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1587.147953][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1587.147953][ T72] ipv6_find_idev+0x102/0x170 [ 1587.147953][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1587.147953][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1587.147953][ T72] netlink_rcv_skb+0x130/0x360 [ 1587.147953][ T72] netlink_unicast+0x449/0x710 [ 1587.147953][ T72] netlink_sendmsg+0x723/0xbe0 [ 1587.147953][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1587.147953][ T72] ___sys_sendmsg+0xee/0x170 [ 1587.147953][ T72] __sys_sendmsg+0xcd/0x170 [ 1587.147953][ T72] do_syscall_64+0xc6/0x1e0 [ 1587.147953][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1587.147953][ T72] [ 1597.390885][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1597.391314][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1597.391314][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.391314][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.391314][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.391314][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.391314][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.391314][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.391314][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.391314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.391314][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.391314][ T72] netlink_unicast+0x449/0x710 [ 1597.391314][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.391314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.391314][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.391314][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.391314][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.391314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.391314][ T72] [ 1597.393488][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1597.393488][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.393488][ T72] ipv6_find_idev+0x102/0x170 [ 1597.393488][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.393488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.393488][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.393488][ T72] netlink_unicast+0x449/0x710 [ 1597.393488][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.393488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.393488][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.393488][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.393488][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.393488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.393488][ T72] [ 1597.395145][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1597.395145][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.395145][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.395145][ T72] ipv6_find_idev+0x102/0x170 [ 1597.395145][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.395145][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.395145][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.395145][ T72] netlink_unicast+0x449/0x710 [ 1597.395145][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.395145][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.395145][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.395145][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.395145][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.395145][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.395145][ T72] [ 1597.396962][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1597.397255][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1597.397255][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.397255][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.397255][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.397255][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.397255][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.397255][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.397255][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.397255][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.397255][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.397255][ T72] netlink_unicast+0x449/0x710 [ 1597.397255][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.397255][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.397255][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.397255][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.397255][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.397255][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.397255][ T72] [ 1597.399409][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1597.399409][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.399409][ T72] ipv6_find_idev+0x102/0x170 [ 1597.399409][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.399409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.399409][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.399409][ T72] netlink_unicast+0x449/0x710 [ 1597.399409][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.399409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.399409][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.399409][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.399409][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.399409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.399409][ T72] [ 1597.401057][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1597.401057][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.401057][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.401057][ T72] ipv6_find_idev+0x102/0x170 [ 1597.401057][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.401057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.401057][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.401057][ T72] netlink_unicast+0x449/0x710 [ 1597.401057][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.401057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.401057][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.401057][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.401057][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.401057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.401057][ T72] [ 1597.402861][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1597.403145][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1597.403145][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.403145][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.403145][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.403145][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.403145][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.403145][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.403145][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.403145][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.403145][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.403145][ T72] netlink_unicast+0x449/0x710 [ 1597.403145][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.403145][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.403145][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.403145][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.403145][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.403145][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.403145][ T72] [ 1597.405300][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1597.405300][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.405300][ T72] ipv6_find_idev+0x102/0x170 [ 1597.405300][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.405300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.405300][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.405300][ T72] netlink_unicast+0x449/0x710 [ 1597.405300][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.405300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.405300][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.405300][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.405300][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.405300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.405300][ T72] [ 1597.406955][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1597.406955][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.406955][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.406955][ T72] ipv6_find_idev+0x102/0x170 [ 1597.406955][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.406955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.406955][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.406955][ T72] netlink_unicast+0x449/0x710 [ 1597.406955][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.406955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.406955][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.406955][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.406955][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.406955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.406955][ T72] [ 1597.408769][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1597.409049][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1597.409049][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.409049][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.409049][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.409049][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.409049][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.409049][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.409049][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.409049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.409049][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.409049][ T72] netlink_unicast+0x449/0x710 [ 1597.409049][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.409049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.409049][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.409049][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.409049][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.409049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.409049][ T72] [ 1597.411194][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1597.411194][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.411194][ T72] ipv6_find_idev+0x102/0x170 [ 1597.411194][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.411194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.411194][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.411194][ T72] netlink_unicast+0x449/0x710 [ 1597.411194][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.411194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.411194][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.411194][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.411194][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.411194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.411194][ T72] [ 1597.412849][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1597.412849][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.412849][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.412849][ T72] ipv6_find_idev+0x102/0x170 [ 1597.412849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.412849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.412849][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.412849][ T72] netlink_unicast+0x449/0x710 [ 1597.412849][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.412849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.412849][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.412849][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.412849][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.412849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.412849][ T72] [ 1597.415044][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1597.415302][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1597.415302][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.415302][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.415302][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.415302][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.415302][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.415302][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.415302][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.415302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.415302][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.415302][ T72] netlink_unicast+0x449/0x710 [ 1597.415302][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.415302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.415302][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.415302][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.415302][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.415302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.415302][ T72] [ 1597.417278][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1597.417278][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.417278][ T72] ipv6_find_idev+0x102/0x170 [ 1597.417278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.417278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.417278][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.417278][ T72] netlink_unicast+0x449/0x710 [ 1597.417278][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.417278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.417278][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.417278][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.417278][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.417278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.417278][ T72] [ 1597.418789][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1597.418789][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.418789][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.418789][ T72] ipv6_find_idev+0x102/0x170 [ 1597.418789][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.418789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.418789][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.418789][ T72] netlink_unicast+0x449/0x710 [ 1597.418789][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.418789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.418789][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.418789][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.418789][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.418789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.418789][ T72] [ 1597.420483][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1597.420743][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1597.420743][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.420743][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.420743][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.420743][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.420743][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.420743][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.420743][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.420743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.420743][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.420743][ T72] netlink_unicast+0x449/0x710 [ 1597.420743][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.420743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.420743][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.420743][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.420743][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.420743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.420743][ T72] [ 1597.422820][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1597.422820][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.422820][ T72] ipv6_find_idev+0x102/0x170 [ 1597.422820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.422820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.422820][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.422820][ T72] netlink_unicast+0x449/0x710 [ 1597.422820][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.422820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.422820][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.422820][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.422820][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.422820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.422820][ T72] [ 1597.424583][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1597.424583][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.424583][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.424583][ T72] ipv6_find_idev+0x102/0x170 [ 1597.424583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.424583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.424583][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.424583][ T72] netlink_unicast+0x449/0x710 [ 1597.424583][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.424583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.424583][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.424583][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.424583][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.424583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.424583][ T72] [ 1597.426502][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1597.426760][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1597.426760][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.426760][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.426760][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.426760][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.426760][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.426760][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.426760][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.426760][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.426760][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.426760][ T72] netlink_unicast+0x449/0x710 [ 1597.426760][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.426760][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.426760][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.426760][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.426760][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.426760][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.426760][ T72] [ 1597.428898][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1597.428898][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.428898][ T72] ipv6_find_idev+0x102/0x170 [ 1597.428898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.428898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.428898][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.428898][ T72] netlink_unicast+0x449/0x710 [ 1597.428898][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.428898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.428898][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.428898][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.428898][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.428898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.428898][ T72] [ 1597.430736][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1597.430736][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.430736][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.430736][ T72] ipv6_find_idev+0x102/0x170 [ 1597.430736][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.430736][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.430736][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.430736][ T72] netlink_unicast+0x449/0x710 [ 1597.430736][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.430736][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.430736][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.430736][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.430736][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.430736][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.430736][ T72] [ 1597.432773][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1597.433053][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1597.433053][ T72] netdev_get_by_index+0x5e/0x80 [ 1597.433053][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1597.433053][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1597.433053][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1597.433053][ T72] ipv6_add_addr+0x411/0x2000 [ 1597.433053][ T72] inet6_addr_add+0x30e/0xa40 [ 1597.433053][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1597.433053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.433053][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.433053][ T72] netlink_unicast+0x449/0x710 [ 1597.433053][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.433053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.433053][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.433053][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.433053][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.433053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.433053][ T72] [ 1597.435505][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1597.435505][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1597.435505][ T72] ipv6_find_idev+0x102/0x170 [ 1597.435505][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.435505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.435505][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.435505][ T72] netlink_unicast+0x449/0x710 [ 1597.435505][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.435505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.435505][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.435505][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.435505][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.435505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.435505][ T72] [ 1597.437337][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1597.437337][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1597.437337][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1597.437337][ T72] ipv6_find_idev+0x102/0x170 [ 1597.437337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1597.437337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1597.437337][ T72] netlink_rcv_skb+0x130/0x360 [ 1597.437337][ T72] netlink_unicast+0x449/0x710 [ 1597.437337][ T72] netlink_sendmsg+0x723/0xbe0 [ 1597.437337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1597.437337][ T72] ___sys_sendmsg+0xee/0x170 [ 1597.437337][ T72] __sys_sendmsg+0xcd/0x170 [ 1597.437337][ T72] do_syscall_64+0xc6/0x1e0 [ 1597.437337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1597.437337][ T72] [ 1607.678815][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1607.679306][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1607.679306][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.679306][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.679306][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.679306][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.679306][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.679306][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.679306][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.679306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.679306][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.679306][ T72] netlink_unicast+0x449/0x710 [ 1607.679306][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.679306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.679306][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.679306][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.679306][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.679306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.679306][ T72] [ 1607.682278][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1607.682278][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.682278][ T72] ipv6_find_idev+0x102/0x170 [ 1607.682278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.682278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.682278][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.682278][ T72] netlink_unicast+0x449/0x710 [ 1607.682278][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.682278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.682278][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.682278][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.682278][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.682278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.682278][ T72] [ 1607.684168][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1607.684168][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.684168][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.684168][ T72] ipv6_find_idev+0x102/0x170 [ 1607.684168][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.684168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.684168][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.684168][ T72] netlink_unicast+0x449/0x710 [ 1607.684168][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.684168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.684168][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.684168][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.684168][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.684168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.684168][ T72] [ 1607.686220][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1607.686551][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1607.686551][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.686551][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.686551][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.686551][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.686551][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.686551][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.686551][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.686551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.686551][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.686551][ T72] netlink_unicast+0x449/0x710 [ 1607.686551][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.686551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.686551][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.686551][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.686551][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.686551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.686551][ T72] [ 1607.689031][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1607.689031][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.689031][ T72] ipv6_find_idev+0x102/0x170 [ 1607.689031][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.689031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.689031][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.689031][ T72] netlink_unicast+0x449/0x710 [ 1607.689031][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.689031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.689031][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.689031][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.689031][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.689031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.689031][ T72] [ 1607.690770][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1607.690770][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.690770][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.690770][ T72] ipv6_find_idev+0x102/0x170 [ 1607.690770][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.690770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.690770][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.690770][ T72] netlink_unicast+0x449/0x710 [ 1607.690770][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.690770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.690770][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.690770][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.690770][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.690770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.690770][ T72] [ 1607.692657][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1607.692963][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1607.692963][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.692963][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.692963][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.692963][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.692963][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.692963][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.692963][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.692963][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.692963][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.692963][ T72] netlink_unicast+0x449/0x710 [ 1607.692963][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.692963][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.692963][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.692963][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.692963][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.692963][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.692963][ T72] [ 1607.695205][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1607.695205][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.695205][ T72] ipv6_find_idev+0x102/0x170 [ 1607.695205][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.695205][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.695205][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.695205][ T72] netlink_unicast+0x449/0x710 [ 1607.695205][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.695205][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.695205][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.695205][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.695205][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.695205][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.695205][ T72] [ 1607.696930][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1607.696930][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.696930][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.696930][ T72] ipv6_find_idev+0x102/0x170 [ 1607.696930][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.696930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.696930][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.696930][ T72] netlink_unicast+0x449/0x710 [ 1607.696930][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.696930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.696930][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.696930][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.696930][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.696930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.696930][ T72] [ 1607.698833][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1607.699133][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1607.699133][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.699133][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.699133][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.699133][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.699133][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.699133][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.699133][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.699133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.699133][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.699133][ T72] netlink_unicast+0x449/0x710 [ 1607.699133][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.699133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.699133][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.699133][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.699133][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.699133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.699133][ T72] [ 1607.701412][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1607.701412][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.701412][ T72] ipv6_find_idev+0x102/0x170 [ 1607.701412][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.701412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.701412][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.701412][ T72] netlink_unicast+0x449/0x710 [ 1607.701412][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.701412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.701412][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.701412][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.701412][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.701412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.701412][ T72] [ 1607.703527][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1607.703527][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.703527][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.703527][ T72] ipv6_find_idev+0x102/0x170 [ 1607.703527][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.703527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.703527][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.703527][ T72] netlink_unicast+0x449/0x710 [ 1607.703527][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.703527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.703527][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.703527][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.703527][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.703527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.703527][ T72] [ 1607.705836][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1607.706132][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1607.706132][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.706132][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.706132][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.706132][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.706132][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.706132][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.706132][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.706132][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.706132][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.706132][ T72] netlink_unicast+0x449/0x710 [ 1607.706132][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.706132][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.706132][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.706132][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.706132][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.706132][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.706132][ T72] [ 1607.708368][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1607.708368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.708368][ T72] ipv6_find_idev+0x102/0x170 [ 1607.708368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.708368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.708368][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.708368][ T72] netlink_unicast+0x449/0x710 [ 1607.708368][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.708368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.708368][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.708368][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.708368][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.708368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.708368][ T72] [ 1607.710069][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1607.710069][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.710069][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.710069][ T72] ipv6_find_idev+0x102/0x170 [ 1607.710069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.710069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.710069][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.710069][ T72] netlink_unicast+0x449/0x710 [ 1607.710069][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.710069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.710069][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.710069][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.710069][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.710069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.710069][ T72] [ 1607.711990][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1607.712284][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1607.712284][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.712284][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.712284][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.712284][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.712284][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.712284][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.712284][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.712284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.712284][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.712284][ T72] netlink_unicast+0x449/0x710 [ 1607.712284][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.712284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.712284][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.712284][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.712284][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.712284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.712284][ T72] [ 1607.714642][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1607.714642][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.714642][ T72] ipv6_find_idev+0x102/0x170 [ 1607.714642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.714642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.714642][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.714642][ T72] netlink_unicast+0x449/0x710 [ 1607.714642][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.714642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.714642][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.714642][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.714642][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.714642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.714642][ T72] [ 1607.716607][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1607.716607][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.716607][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.716607][ T72] ipv6_find_idev+0x102/0x170 [ 1607.716607][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.716607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.716607][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.716607][ T72] netlink_unicast+0x449/0x710 [ 1607.716607][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.716607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.716607][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.716607][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.716607][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.716607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.716607][ T72] [ 1607.718790][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1607.719079][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1607.719079][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.719079][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.719079][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.719079][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.719079][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.719079][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.719079][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.719079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.719079][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.719079][ T72] netlink_unicast+0x449/0x710 [ 1607.719079][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.719079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.719079][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.719079][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.719079][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.719079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.719079][ T72] [ 1607.721495][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1607.721495][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.721495][ T72] ipv6_find_idev+0x102/0x170 [ 1607.721495][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.721495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.721495][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.721495][ T72] netlink_unicast+0x449/0x710 [ 1607.721495][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.721495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.721495][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.721495][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.721495][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.721495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.721495][ T72] [ 1607.723403][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1607.723403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.723403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.723403][ T72] ipv6_find_idev+0x102/0x170 [ 1607.723403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.723403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.723403][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.723403][ T72] netlink_unicast+0x449/0x710 [ 1607.723403][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.723403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.723403][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.723403][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.723403][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.723403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.723403][ T72] [ 1607.725541][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1607.725881][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1607.725881][ T72] netdev_get_by_index+0x5e/0x80 [ 1607.725881][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1607.725881][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1607.725881][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1607.725881][ T72] ipv6_add_addr+0x411/0x2000 [ 1607.725881][ T72] inet6_addr_add+0x30e/0xa40 [ 1607.725881][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1607.725881][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.725881][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.725881][ T72] netlink_unicast+0x449/0x710 [ 1607.725881][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.725881][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.725881][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.725881][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.725881][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.725881][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.725881][ T72] [ 1607.728377][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1607.728377][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1607.728377][ T72] ipv6_find_idev+0x102/0x170 [ 1607.728377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.728377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.728377][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.728377][ T72] netlink_unicast+0x449/0x710 [ 1607.728377][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.728377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.728377][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.728377][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.728377][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.728377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.728377][ T72] [ 1607.730268][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1607.730268][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1607.730268][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1607.730268][ T72] ipv6_find_idev+0x102/0x170 [ 1607.730268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1607.730268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1607.730268][ T72] netlink_rcv_skb+0x130/0x360 [ 1607.730268][ T72] netlink_unicast+0x449/0x710 [ 1607.730268][ T72] netlink_sendmsg+0x723/0xbe0 [ 1607.730268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1607.730268][ T72] ___sys_sendmsg+0xee/0x170 [ 1607.730268][ T72] __sys_sendmsg+0xcd/0x170 [ 1607.730268][ T72] do_syscall_64+0xc6/0x1e0 [ 1607.730268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1607.730268][ T72] [ 1617.734863][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1617.735276][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1617.735276][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.735276][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.735276][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.735276][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.735276][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.735276][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.735276][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.735276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.735276][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.735276][ T72] netlink_unicast+0x449/0x710 [ 1617.735276][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.735276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.735276][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.735276][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.735276][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.735276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.735276][ T72] [ 1617.737252][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1617.737252][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.737252][ T72] ipv6_find_idev+0x102/0x170 [ 1617.737252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.737252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.737252][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.737252][ T72] netlink_unicast+0x449/0x710 [ 1617.737252][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.737252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.737252][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.737252][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.737252][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.737252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.737252][ T72] [ 1617.738766][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1617.738766][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.738766][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.738766][ T72] ipv6_find_idev+0x102/0x170 [ 1617.738766][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.738766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.738766][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.738766][ T72] netlink_unicast+0x449/0x710 [ 1617.738766][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.738766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.738766][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.738766][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.738766][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.738766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.738766][ T72] [ 1617.740419][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1617.740685][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1617.740685][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.740685][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.740685][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.740685][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.740685][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.740685][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.740685][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.740685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.740685][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.740685][ T72] netlink_unicast+0x449/0x710 [ 1617.740685][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.740685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.740685][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.740685][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.740685][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.740685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.740685][ T72] [ 1617.742641][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1617.742641][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.742641][ T72] ipv6_find_idev+0x102/0x170 [ 1617.742641][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.742641][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.742641][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.742641][ T72] netlink_unicast+0x449/0x710 [ 1617.742641][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.742641][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.742641][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.742641][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.742641][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.742641][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.742641][ T72] [ 1617.744180][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1617.744180][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.744180][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.744180][ T72] ipv6_find_idev+0x102/0x170 [ 1617.744180][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.744180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.744180][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.744180][ T72] netlink_unicast+0x449/0x710 [ 1617.744180][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.744180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.744180][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.744180][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.744180][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.744180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.744180][ T72] [ 1617.745847][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1617.746123][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1617.746123][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.746123][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.746123][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.746123][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.746123][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.746123][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.746123][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.746123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.746123][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.746123][ T72] netlink_unicast+0x449/0x710 [ 1617.746123][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.746123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.746123][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.746123][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.746123][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.746123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.746123][ T72] [ 1617.748079][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1617.748079][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.748079][ T72] ipv6_find_idev+0x102/0x170 [ 1617.748079][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.748079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.748079][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.748079][ T72] netlink_unicast+0x449/0x710 [ 1617.748079][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.748079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.748079][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.748079][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.748079][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.748079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.748079][ T72] [ 1617.749589][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1617.749589][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.749589][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.749589][ T72] ipv6_find_idev+0x102/0x170 [ 1617.749589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.749589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.749589][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.749589][ T72] netlink_unicast+0x449/0x710 [ 1617.749589][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.749589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.749589][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.749589][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.749589][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.749589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.749589][ T72] [ 1617.751354][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1617.751632][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1617.751632][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.751632][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.751632][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.751632][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.751632][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.751632][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.751632][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.751632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.751632][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.751632][ T72] netlink_unicast+0x449/0x710 [ 1617.751632][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.751632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.751632][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.751632][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.751632][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.751632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.751632][ T72] [ 1617.753785][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1617.753785][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.753785][ T72] ipv6_find_idev+0x102/0x170 [ 1617.753785][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.753785][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.753785][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.753785][ T72] netlink_unicast+0x449/0x710 [ 1617.753785][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.753785][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.753785][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.753785][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.753785][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.753785][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.753785][ T72] [ 1617.755441][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1617.755441][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.755441][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.755441][ T72] ipv6_find_idev+0x102/0x170 [ 1617.755441][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.755441][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.755441][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.755441][ T72] netlink_unicast+0x449/0x710 [ 1617.755441][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.755441][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.755441][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.755441][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.755441][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.755441][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.755441][ T72] [ 1617.757641][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1617.758246][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1617.758246][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.758246][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.758246][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.758246][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.758246][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.758246][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.758246][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.758246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.758246][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.758246][ T72] netlink_unicast+0x449/0x710 [ 1617.758246][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.758246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.758246][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.758246][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.758246][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.758246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.758246][ T72] [ 1617.760236][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1617.760236][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.760236][ T72] ipv6_find_idev+0x102/0x170 [ 1617.760236][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.760236][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.760236][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.760236][ T72] netlink_unicast+0x449/0x710 [ 1617.760236][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.760236][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.760236][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.760236][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.760236][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.760236][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.760236][ T72] [ 1617.761737][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1617.761737][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.761737][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.761737][ T72] ipv6_find_idev+0x102/0x170 [ 1617.761737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.761737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.761737][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.761737][ T72] netlink_unicast+0x449/0x710 [ 1617.761737][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.761737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.761737][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.761737][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.761737][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.761737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.761737][ T72] [ 1617.763519][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1617.763859][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1617.763859][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.763859][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.763859][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.763859][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.763859][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.763859][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.763859][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.763859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.763859][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.763859][ T72] netlink_unicast+0x449/0x710 [ 1617.763859][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.763859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.763859][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.763859][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.763859][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.763859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.763859][ T72] [ 1617.766006][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1617.766006][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.766006][ T72] ipv6_find_idev+0x102/0x170 [ 1617.766006][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.766006][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.766006][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.766006][ T72] netlink_unicast+0x449/0x710 [ 1617.766006][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.766006][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.766006][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.766006][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.766006][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.766006][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.766006][ T72] [ 1617.767720][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1617.767720][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.767720][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.767720][ T72] ipv6_find_idev+0x102/0x170 [ 1617.767720][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.767720][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.767720][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.767720][ T72] netlink_unicast+0x449/0x710 [ 1617.767720][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.767720][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.767720][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.767720][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.767720][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.767720][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.767720][ T72] [ 1617.769807][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1617.770083][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1617.770083][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.770083][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.770083][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.770083][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.770083][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.770083][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.770083][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.770083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.770083][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.770083][ T72] netlink_unicast+0x449/0x710 [ 1617.770083][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.770083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.770083][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.770083][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.770083][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.770083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.770083][ T72] [ 1617.773379][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1617.773379][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.773379][ T72] ipv6_find_idev+0x102/0x170 [ 1617.773379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.773379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.773379][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.773379][ T72] netlink_unicast+0x449/0x710 [ 1617.773379][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.773379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.773379][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.773379][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.773379][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.773379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.773379][ T72] [ 1617.775080][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1617.775080][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.775080][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.775080][ T72] ipv6_find_idev+0x102/0x170 [ 1617.775080][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.775080][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.775080][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.775080][ T72] netlink_unicast+0x449/0x710 [ 1617.775080][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.775080][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.775080][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.775080][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.775080][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.775080][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.775080][ T72] [ 1617.776961][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1617.777223][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1617.777223][ T72] netdev_get_by_index+0x5e/0x80 [ 1617.777223][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1617.777223][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1617.777223][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1617.777223][ T72] ipv6_add_addr+0x411/0x2000 [ 1617.777223][ T72] inet6_addr_add+0x30e/0xa40 [ 1617.777223][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1617.777223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.777223][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.777223][ T72] netlink_unicast+0x449/0x710 [ 1617.777223][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.777223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.777223][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.777223][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.777223][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.777223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.777223][ T72] [ 1617.779711][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1617.779711][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1617.779711][ T72] ipv6_find_idev+0x102/0x170 [ 1617.779711][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.779711][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.779711][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.779711][ T72] netlink_unicast+0x449/0x710 [ 1617.779711][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.779711][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.779711][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.779711][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.779711][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.779711][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.779711][ T72] [ 1617.781573][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1617.781573][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1617.781573][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1617.781573][ T72] ipv6_find_idev+0x102/0x170 [ 1617.781573][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1617.781573][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1617.781573][ T72] netlink_rcv_skb+0x130/0x360 [ 1617.781573][ T72] netlink_unicast+0x449/0x710 [ 1617.781573][ T72] netlink_sendmsg+0x723/0xbe0 [ 1617.781573][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1617.781573][ T72] ___sys_sendmsg+0xee/0x170 [ 1617.781573][ T72] __sys_sendmsg+0xcd/0x170 [ 1617.781573][ T72] do_syscall_64+0xc6/0x1e0 [ 1617.781573][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1617.781573][ T72] [ 1628.022851][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1628.023258][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1628.023258][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.023258][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.023258][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.023258][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.023258][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.023258][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.023258][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.023258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.023258][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.023258][ T72] netlink_unicast+0x449/0x710 [ 1628.023258][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.023258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.023258][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.023258][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.023258][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.023258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.023258][ T72] [ 1628.025442][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1628.025442][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.025442][ T72] ipv6_find_idev+0x102/0x170 [ 1628.025442][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.025442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.025442][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.025442][ T72] netlink_unicast+0x449/0x710 [ 1628.025442][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.025442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.025442][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.025442][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.025442][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.025442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.025442][ T72] [ 1628.027098][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1628.027098][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.027098][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.027098][ T72] ipv6_find_idev+0x102/0x170 [ 1628.027098][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.027098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.027098][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.027098][ T72] netlink_unicast+0x449/0x710 [ 1628.027098][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.027098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.027098][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.027098][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.027098][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.027098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.027098][ T72] [ 1628.028757][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1628.029020][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1628.029020][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.029020][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.029020][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.029020][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.029020][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.029020][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.029020][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.029020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.029020][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.029020][ T72] netlink_unicast+0x449/0x710 [ 1628.029020][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.029020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.029020][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.029020][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.029020][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.029020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.029020][ T72] [ 1628.030991][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1628.030991][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.030991][ T72] ipv6_find_idev+0x102/0x170 [ 1628.030991][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.030991][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.030991][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.030991][ T72] netlink_unicast+0x449/0x710 [ 1628.030991][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.030991][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.030991][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.030991][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.030991][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.030991][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.030991][ T72] [ 1628.032503][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1628.032503][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.032503][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.032503][ T72] ipv6_find_idev+0x102/0x170 [ 1628.032503][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.032503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.032503][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.032503][ T72] netlink_unicast+0x449/0x710 [ 1628.032503][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.032503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.032503][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.032503][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.032503][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.032503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.032503][ T72] [ 1628.034158][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1628.034428][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1628.034428][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.034428][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.034428][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.034428][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.034428][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.034428][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.034428][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.034428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.034428][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.034428][ T72] netlink_unicast+0x449/0x710 [ 1628.034428][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.034428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.034428][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.034428][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.034428][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.034428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.034428][ T72] [ 1628.036379][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1628.036379][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.036379][ T72] ipv6_find_idev+0x102/0x170 [ 1628.036379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.036379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.036379][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.036379][ T72] netlink_unicast+0x449/0x710 [ 1628.036379][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.036379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.036379][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.036379][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.036379][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.036379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.036379][ T72] [ 1628.037955][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1628.037955][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.037955][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.037955][ T72] ipv6_find_idev+0x102/0x170 [ 1628.037955][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.037955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.037955][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.037955][ T72] netlink_unicast+0x449/0x710 [ 1628.037955][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.037955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.037955][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.037955][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.037955][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.037955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.037955][ T72] [ 1628.039781][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1628.040440][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1628.040440][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.040440][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.040440][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.040440][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.040440][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.040440][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.040440][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.040440][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.040440][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.040440][ T72] netlink_unicast+0x449/0x710 [ 1628.040440][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.040440][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.040440][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.040440][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.040440][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.040440][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.040440][ T72] [ 1628.042594][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1628.042594][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.042594][ T72] ipv6_find_idev+0x102/0x170 [ 1628.042594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.042594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.042594][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.042594][ T72] netlink_unicast+0x449/0x710 [ 1628.042594][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.042594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.042594][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.042594][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.042594][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.042594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.042594][ T72] [ 1628.044259][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1628.044259][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.044259][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.044259][ T72] ipv6_find_idev+0x102/0x170 [ 1628.044259][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.044259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.044259][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.044259][ T72] netlink_unicast+0x449/0x710 [ 1628.044259][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.044259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.044259][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.044259][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.044259][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.044259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.044259][ T72] [ 1628.046395][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1628.046653][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1628.046653][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.046653][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.046653][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.046653][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.046653][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.046653][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.046653][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.046653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.046653][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.046653][ T72] netlink_unicast+0x449/0x710 [ 1628.046653][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.046653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.046653][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.046653][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.046653][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.046653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.046653][ T72] [ 1628.048607][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1628.048607][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.048607][ T72] ipv6_find_idev+0x102/0x170 [ 1628.048607][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.048607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.048607][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.048607][ T72] netlink_unicast+0x449/0x710 [ 1628.048607][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.048607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.048607][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.048607][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.048607][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.048607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.048607][ T72] [ 1628.050107][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1628.050107][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.050107][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.050107][ T72] ipv6_find_idev+0x102/0x170 [ 1628.050107][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.050107][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.050107][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.050107][ T72] netlink_unicast+0x449/0x710 [ 1628.050107][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.050107][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.050107][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.050107][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.050107][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.050107][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.050107][ T72] [ 1628.051796][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1628.052053][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1628.052053][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.052053][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.052053][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.052053][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.052053][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.052053][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.052053][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.052053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.052053][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.052053][ T72] netlink_unicast+0x449/0x710 [ 1628.052053][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.052053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.052053][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.052053][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.052053][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.052053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.052053][ T72] [ 1628.054203][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1628.054203][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.054203][ T72] ipv6_find_idev+0x102/0x170 [ 1628.054203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.054203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.054203][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.054203][ T72] netlink_unicast+0x449/0x710 [ 1628.054203][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.054203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.054203][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.054203][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.054203][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.054203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.054203][ T72] [ 1628.056097][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1628.056097][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.056097][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.056097][ T72] ipv6_find_idev+0x102/0x170 [ 1628.056097][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.056097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.056097][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.056097][ T72] netlink_unicast+0x449/0x710 [ 1628.056097][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.056097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.056097][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.056097][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.056097][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.056097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.056097][ T72] [ 1628.058175][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1628.058453][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1628.058453][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.058453][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.058453][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.058453][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.058453][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.058453][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.058453][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.058453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.058453][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.058453][ T72] netlink_unicast+0x449/0x710 [ 1628.058453][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.058453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.058453][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.058453][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.058453][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.058453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.058453][ T72] [ 1628.060789][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1628.060789][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.060789][ T72] ipv6_find_idev+0x102/0x170 [ 1628.060789][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.060789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.060789][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.060789][ T72] netlink_unicast+0x449/0x710 [ 1628.060789][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.060789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.060789][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.060789][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.060789][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.060789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.060789][ T72] [ 1628.062627][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1628.062627][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.062627][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.062627][ T72] ipv6_find_idev+0x102/0x170 [ 1628.062627][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.062627][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.062627][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.062627][ T72] netlink_unicast+0x449/0x710 [ 1628.062627][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.062627][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.062627][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.062627][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.062627][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.062627][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.062627][ T72] [ 1628.064660][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1628.065003][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1628.065003][ T72] netdev_get_by_index+0x5e/0x80 [ 1628.065003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1628.065003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1628.065003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1628.065003][ T72] ipv6_add_addr+0x411/0x2000 [ 1628.065003][ T72] inet6_addr_add+0x30e/0xa40 [ 1628.065003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1628.065003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.065003][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.065003][ T72] netlink_unicast+0x449/0x710 [ 1628.065003][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.065003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.065003][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.065003][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.065003][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.065003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.065003][ T72] [ 1628.067406][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1628.067406][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1628.067406][ T72] ipv6_find_idev+0x102/0x170 [ 1628.067406][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.067406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.067406][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.067406][ T72] netlink_unicast+0x449/0x710 [ 1628.067406][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.067406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.067406][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.067406][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.067406][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.067406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.067406][ T72] [ 1628.069253][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1628.069253][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1628.069253][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1628.069253][ T72] ipv6_find_idev+0x102/0x170 [ 1628.069253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1628.069253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1628.069253][ T72] netlink_rcv_skb+0x130/0x360 [ 1628.069253][ T72] netlink_unicast+0x449/0x710 [ 1628.069253][ T72] netlink_sendmsg+0x723/0xbe0 [ 1628.069253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1628.069253][ T72] ___sys_sendmsg+0xee/0x170 [ 1628.069253][ T72] __sys_sendmsg+0xcd/0x170 [ 1628.069253][ T72] do_syscall_64+0xc6/0x1e0 [ 1628.069253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1628.069253][ T72] [ 1638.310893][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1638.311329][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1638.311329][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.311329][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.311329][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.311329][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.311329][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.311329][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.311329][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.311329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.311329][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.311329][ T72] netlink_unicast+0x449/0x710 [ 1638.311329][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.311329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.311329][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.311329][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.311329][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.311329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.311329][ T72] [ 1638.313528][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1638.313528][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.313528][ T72] ipv6_find_idev+0x102/0x170 [ 1638.313528][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.313528][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.313528][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.313528][ T72] netlink_unicast+0x449/0x710 [ 1638.313528][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.313528][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.313528][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.313528][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.313528][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.313528][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.313528][ T72] [ 1638.315220][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1638.315220][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.315220][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.315220][ T72] ipv6_find_idev+0x102/0x170 [ 1638.315220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.315220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.315220][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.315220][ T72] netlink_unicast+0x449/0x710 [ 1638.315220][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.315220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.315220][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.315220][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.315220][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.315220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.315220][ T72] [ 1638.317083][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1638.317376][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1638.317376][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.317376][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.317376][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.317376][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.317376][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.317376][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.317376][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.317376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.317376][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.317376][ T72] netlink_unicast+0x449/0x710 [ 1638.317376][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.317376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.317376][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.317376][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.317376][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.317376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.317376][ T72] [ 1638.319554][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1638.319554][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.319554][ T72] ipv6_find_idev+0x102/0x170 [ 1638.319554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.319554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.319554][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.319554][ T72] netlink_unicast+0x449/0x710 [ 1638.319554][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.319554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.319554][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.319554][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.319554][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.319554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.319554][ T72] [ 1638.321230][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1638.321230][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.321230][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.321230][ T72] ipv6_find_idev+0x102/0x170 [ 1638.321230][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.321230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.321230][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.321230][ T72] netlink_unicast+0x449/0x710 [ 1638.321230][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.321230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.321230][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.321230][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.321230][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.321230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.321230][ T72] [ 1638.323073][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1638.323370][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1638.323370][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.323370][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.323370][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.323370][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.323370][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.323370][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.323370][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.323370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.323370][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.323370][ T72] netlink_unicast+0x449/0x710 [ 1638.323370][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.323370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.323370][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.323370][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.323370][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.323370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.323370][ T72] [ 1638.325500][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1638.325500][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.325500][ T72] ipv6_find_idev+0x102/0x170 [ 1638.325500][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.325500][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.325500][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.325500][ T72] netlink_unicast+0x449/0x710 [ 1638.325500][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.325500][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.325500][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.325500][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.325500][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.325500][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.325500][ T72] [ 1638.327029][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1638.327029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.327029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.327029][ T72] ipv6_find_idev+0x102/0x170 [ 1638.327029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.327029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.327029][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.327029][ T72] netlink_unicast+0x449/0x710 [ 1638.327029][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.327029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.327029][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.327029][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.327029][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.327029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.327029][ T72] [ 1638.328706][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1638.329406][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1638.329406][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.329406][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.329406][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.329406][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.329406][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.329406][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.329406][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.329406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.329406][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.329406][ T72] netlink_unicast+0x449/0x710 [ 1638.329406][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.329406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.329406][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.329406][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.329406][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.329406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.329406][ T72] [ 1638.331382][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1638.331382][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.331382][ T72] ipv6_find_idev+0x102/0x170 [ 1638.331382][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.331382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.331382][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.331382][ T72] netlink_unicast+0x449/0x710 [ 1638.331382][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.331382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.331382][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.331382][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.331382][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.331382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.331382][ T72] [ 1638.332917][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1638.332917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.332917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.332917][ T72] ipv6_find_idev+0x102/0x170 [ 1638.332917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.332917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.332917][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.332917][ T72] netlink_unicast+0x449/0x710 [ 1638.332917][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.332917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.332917][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.332917][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.332917][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.332917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.332917][ T72] [ 1638.334645][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1638.334969][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1638.334969][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.334969][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.334969][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.334969][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.334969][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.334969][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.334969][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.334969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.334969][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.334969][ T72] netlink_unicast+0x449/0x710 [ 1638.334969][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.334969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.334969][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.334969][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.334969][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.334969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.334969][ T72] [ 1638.336962][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1638.336962][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.336962][ T72] ipv6_find_idev+0x102/0x170 [ 1638.336962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.336962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.336962][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.336962][ T72] netlink_unicast+0x449/0x710 [ 1638.336962][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.336962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.336962][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.336962][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.336962][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.336962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.336962][ T72] [ 1638.338496][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1638.338496][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.338496][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.338496][ T72] ipv6_find_idev+0x102/0x170 [ 1638.338496][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.338496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.338496][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.338496][ T72] netlink_unicast+0x449/0x710 [ 1638.338496][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.338496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.338496][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.338496][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.338496][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.338496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.338496][ T72] [ 1638.340208][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1638.340519][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1638.340519][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.340519][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.340519][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.340519][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.340519][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.340519][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.340519][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.340519][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.340519][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.340519][ T72] netlink_unicast+0x449/0x710 [ 1638.340519][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.340519][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.340519][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.340519][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.340519][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.340519][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.340519][ T72] [ 1638.342502][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1638.342502][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.342502][ T72] ipv6_find_idev+0x102/0x170 [ 1638.342502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.342502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.342502][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.342502][ T72] netlink_unicast+0x449/0x710 [ 1638.342502][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.342502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.342502][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.342502][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.342502][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.342502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.342502][ T72] [ 1638.344225][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1638.344225][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.344225][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.344225][ T72] ipv6_find_idev+0x102/0x170 [ 1638.344225][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.344225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.344225][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.344225][ T72] netlink_unicast+0x449/0x710 [ 1638.344225][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.344225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.344225][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.344225][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.344225][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.344225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.344225][ T72] [ 1638.346234][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1638.346539][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1638.346539][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.346539][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.346539][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.346539][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.346539][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.346539][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.346539][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.346539][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.346539][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.346539][ T72] netlink_unicast+0x449/0x710 [ 1638.346539][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.346539][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.346539][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.346539][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.346539][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.346539][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.346539][ T72] [ 1638.348707][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1638.348707][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.348707][ T72] ipv6_find_idev+0x102/0x170 [ 1638.348707][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.348707][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.348707][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.348707][ T72] netlink_unicast+0x449/0x710 [ 1638.348707][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.348707][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.348707][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.348707][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.348707][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.348707][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.348707][ T72] [ 1638.350418][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1638.350418][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.350418][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.350418][ T72] ipv6_find_idev+0x102/0x170 [ 1638.350418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.350418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.350418][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.350418][ T72] netlink_unicast+0x449/0x710 [ 1638.350418][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.350418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.350418][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.350418][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.350418][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.350418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.350418][ T72] [ 1638.352327][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1638.352635][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1638.352635][ T72] netdev_get_by_index+0x5e/0x80 [ 1638.352635][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1638.352635][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1638.352635][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1638.352635][ T72] ipv6_add_addr+0x411/0x2000 [ 1638.352635][ T72] inet6_addr_add+0x30e/0xa40 [ 1638.352635][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1638.352635][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.352635][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.352635][ T72] netlink_unicast+0x449/0x710 [ 1638.352635][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.352635][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.352635][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.352635][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.352635][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.352635][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.352635][ T72] [ 1638.354814][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1638.354814][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1638.354814][ T72] ipv6_find_idev+0x102/0x170 [ 1638.354814][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.354814][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.354814][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.354814][ T72] netlink_unicast+0x449/0x710 [ 1638.354814][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.354814][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.354814][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.354814][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.354814][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.354814][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.354814][ T72] [ 1638.356585][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1638.356585][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1638.356585][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1638.356585][ T72] ipv6_find_idev+0x102/0x170 [ 1638.356585][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1638.356585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1638.356585][ T72] netlink_rcv_skb+0x130/0x360 [ 1638.356585][ T72] netlink_unicast+0x449/0x710 [ 1638.356585][ T72] netlink_sendmsg+0x723/0xbe0 [ 1638.356585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1638.356585][ T72] ___sys_sendmsg+0xee/0x170 [ 1638.356585][ T72] __sys_sendmsg+0xcd/0x170 [ 1638.356585][ T72] do_syscall_64+0xc6/0x1e0 [ 1638.356585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1638.356585][ T72] [ 1648.454872][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1648.455316][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1648.455316][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.455316][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.455316][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.455316][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.455316][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.455316][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.455316][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.455316][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.455316][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.455316][ T72] netlink_unicast+0x449/0x710 [ 1648.455316][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.455316][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.455316][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.455316][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.455316][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.455316][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.455316][ T72] [ 1648.457506][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1648.457506][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.457506][ T72] ipv6_find_idev+0x102/0x170 [ 1648.457506][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.457506][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.457506][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.457506][ T72] netlink_unicast+0x449/0x710 [ 1648.457506][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.457506][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.457506][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.457506][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.457506][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.457506][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.457506][ T72] [ 1648.459211][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1648.459211][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.459211][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.459211][ T72] ipv6_find_idev+0x102/0x170 [ 1648.459211][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.459211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.459211][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.459211][ T72] netlink_unicast+0x449/0x710 [ 1648.459211][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.459211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.459211][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.459211][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.459211][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.459211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.459211][ T72] [ 1648.461073][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1648.461374][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1648.461374][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.461374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.461374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.461374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.461374][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.461374][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.461374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.461374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.461374][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.461374][ T72] netlink_unicast+0x449/0x710 [ 1648.461374][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.461374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.461374][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.461374][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.461374][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.461374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.461374][ T72] [ 1648.463569][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1648.463569][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.463569][ T72] ipv6_find_idev+0x102/0x170 [ 1648.463569][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.463569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.463569][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.463569][ T72] netlink_unicast+0x449/0x710 [ 1648.463569][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.463569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.463569][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.463569][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.463569][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.463569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.463569][ T72] [ 1648.465249][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1648.465249][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.465249][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.465249][ T72] ipv6_find_idev+0x102/0x170 [ 1648.465249][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.465249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.465249][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.465249][ T72] netlink_unicast+0x449/0x710 [ 1648.465249][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.465249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.465249][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.465249][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.465249][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.465249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.465249][ T72] [ 1648.467098][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1648.467390][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1648.467390][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.467390][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.467390][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.467390][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.467390][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.467390][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.467390][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.467390][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.467390][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.467390][ T72] netlink_unicast+0x449/0x710 [ 1648.467390][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.467390][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.467390][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.467390][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.467390][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.467390][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.467390][ T72] [ 1648.469617][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1648.469617][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.469617][ T72] ipv6_find_idev+0x102/0x170 [ 1648.469617][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.469617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.469617][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.469617][ T72] netlink_unicast+0x449/0x710 [ 1648.469617][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.469617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.469617][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.469617][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.469617][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.469617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.469617][ T72] [ 1648.471144][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1648.471144][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.471144][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.471144][ T72] ipv6_find_idev+0x102/0x170 [ 1648.471144][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.471144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.471144][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.471144][ T72] netlink_unicast+0x449/0x710 [ 1648.471144][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.471144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.471144][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.471144][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.471144][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.471144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.471144][ T72] [ 1648.472820][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1648.473087][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1648.473087][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.473087][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.473087][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.473087][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.473087][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.473087][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.473087][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.473087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.473087][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.473087][ T72] netlink_unicast+0x449/0x710 [ 1648.473087][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.473087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.473087][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.473087][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.473087][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.473087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.473087][ T72] [ 1648.475082][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1648.475082][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.475082][ T72] ipv6_find_idev+0x102/0x170 [ 1648.475082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.475082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.475082][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.475082][ T72] netlink_unicast+0x449/0x710 [ 1648.475082][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.475082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.475082][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.475082][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.475082][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.475082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.475082][ T72] [ 1648.476615][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1648.476615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.476615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.476615][ T72] ipv6_find_idev+0x102/0x170 [ 1648.476615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.476615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.476615][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.476615][ T72] netlink_unicast+0x449/0x710 [ 1648.476615][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.476615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.476615][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.476615][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.476615][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.476615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.476615][ T72] [ 1648.478686][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1648.479278][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1648.479278][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.479278][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.479278][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.479278][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.479278][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.479278][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.479278][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.479278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.479278][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.479278][ T72] netlink_unicast+0x449/0x710 [ 1648.479278][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.479278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.479278][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.479278][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.479278][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.479278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.479278][ T72] [ 1648.481254][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1648.481254][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.481254][ T72] ipv6_find_idev+0x102/0x170 [ 1648.481254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.481254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.481254][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.481254][ T72] netlink_unicast+0x449/0x710 [ 1648.481254][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.481254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.481254][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.481254][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.481254][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.481254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.481254][ T72] [ 1648.482780][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1648.482780][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.482780][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.482780][ T72] ipv6_find_idev+0x102/0x170 [ 1648.482780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.482780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.482780][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.482780][ T72] netlink_unicast+0x449/0x710 [ 1648.482780][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.482780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.482780][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.482780][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.482780][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.482780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.482780][ T72] [ 1648.484464][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1648.484735][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1648.484735][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.484735][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.484735][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.484735][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.484735][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.484735][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.484735][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.484735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.484735][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.484735][ T72] netlink_unicast+0x449/0x710 [ 1648.484735][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.484735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.484735][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.484735][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.484735][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.484735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.484735][ T72] [ 1648.486910][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1648.486910][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.486910][ T72] ipv6_find_idev+0x102/0x170 [ 1648.486910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.486910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.486910][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.486910][ T72] netlink_unicast+0x449/0x710 [ 1648.486910][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.486910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.486910][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.486910][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.486910][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.486910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.486910][ T72] [ 1648.488651][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1648.488651][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.488651][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.488651][ T72] ipv6_find_idev+0x102/0x170 [ 1648.488651][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.488651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.488651][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.488651][ T72] netlink_unicast+0x449/0x710 [ 1648.488651][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.488651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.488651][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.488651][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.488651][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.488651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.488651][ T72] [ 1648.490710][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1648.491042][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1648.491042][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.491042][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.491042][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.491042][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.491042][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.491042][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.491042][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.491042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.491042][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.491042][ T72] netlink_unicast+0x449/0x710 [ 1648.491042][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.491042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.491042][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.491042][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.491042][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.491042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.491042][ T72] [ 1648.493459][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1648.493459][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.493459][ T72] ipv6_find_idev+0x102/0x170 [ 1648.493459][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.493459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.493459][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.493459][ T72] netlink_unicast+0x449/0x710 [ 1648.493459][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.493459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.493459][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.493459][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.493459][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.493459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.493459][ T72] [ 1648.495317][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1648.495317][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.495317][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.495317][ T72] ipv6_find_idev+0x102/0x170 [ 1648.495317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.495317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.495317][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.495317][ T72] netlink_unicast+0x449/0x710 [ 1648.495317][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.495317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.495317][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.495317][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.495317][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.495317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.495317][ T72] [ 1648.497423][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1648.497753][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1648.497753][ T72] netdev_get_by_index+0x5e/0x80 [ 1648.497753][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1648.497753][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1648.497753][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1648.497753][ T72] ipv6_add_addr+0x411/0x2000 [ 1648.497753][ T72] inet6_addr_add+0x30e/0xa40 [ 1648.497753][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1648.497753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.497753][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.497753][ T72] netlink_unicast+0x449/0x710 [ 1648.497753][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.497753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.497753][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.497753][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.497753][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.497753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.497753][ T72] [ 1648.500018][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1648.500018][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1648.500018][ T72] ipv6_find_idev+0x102/0x170 [ 1648.500018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.500018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.500018][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.500018][ T72] netlink_unicast+0x449/0x710 [ 1648.500018][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.500018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.500018][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.500018][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.500018][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.500018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.500018][ T72] [ 1648.501726][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1648.501726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1648.501726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1648.501726][ T72] ipv6_find_idev+0x102/0x170 [ 1648.501726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1648.501726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1648.501726][ T72] netlink_rcv_skb+0x130/0x360 [ 1648.501726][ T72] netlink_unicast+0x449/0x710 [ 1648.501726][ T72] netlink_sendmsg+0x723/0xbe0 [ 1648.501726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1648.501726][ T72] ___sys_sendmsg+0xee/0x170 [ 1648.501726][ T72] __sys_sendmsg+0xcd/0x170 [ 1648.501726][ T72] do_syscall_64+0xc6/0x1e0 [ 1648.501726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1648.501726][ T72] [ 1658.742866][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1658.743388][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1658.743388][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.743388][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.743388][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.743388][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.743388][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.743388][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.743388][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.743388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.743388][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.743388][ T72] netlink_unicast+0x449/0x710 [ 1658.743388][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.743388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.743388][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.743388][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.743388][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.743388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.743388][ T72] [ 1658.745650][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1658.745650][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.745650][ T72] ipv6_find_idev+0x102/0x170 [ 1658.745650][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.745650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.745650][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.745650][ T72] netlink_unicast+0x449/0x710 [ 1658.745650][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.745650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.745650][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.745650][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.745650][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.745650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.745650][ T72] [ 1658.747387][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1658.747387][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.747387][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.747387][ T72] ipv6_find_idev+0x102/0x170 [ 1658.747387][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.747387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.747387][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.747387][ T72] netlink_unicast+0x449/0x710 [ 1658.747387][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.747387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.747387][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.747387][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.747387][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.747387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.747387][ T72] [ 1658.749369][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1658.749797][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1658.749797][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.749797][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.749797][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.749797][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.749797][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.749797][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.749797][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.749797][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.749797][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.749797][ T72] netlink_unicast+0x449/0x710 [ 1658.749797][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.749797][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.749797][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.749797][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.749797][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.749797][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.749797][ T72] [ 1658.753168][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1658.753168][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.753168][ T72] ipv6_find_idev+0x102/0x170 [ 1658.753168][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.753168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.753168][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.753168][ T72] netlink_unicast+0x449/0x710 [ 1658.753168][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.753168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.753168][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.753168][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.753168][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.753168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.753168][ T72] [ 1658.755557][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1658.755557][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.755557][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.755557][ T72] ipv6_find_idev+0x102/0x170 [ 1658.755557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.755557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.755557][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.755557][ T72] netlink_unicast+0x449/0x710 [ 1658.755557][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.755557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.755557][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.755557][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.755557][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.755557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.755557][ T72] [ 1658.757447][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1658.757747][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1658.757747][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.757747][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.757747][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.757747][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.757747][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.757747][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.757747][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.757747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.757747][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.757747][ T72] netlink_unicast+0x449/0x710 [ 1658.757747][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.757747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.757747][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.757747][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.757747][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.757747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.757747][ T72] [ 1658.760069][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1658.760069][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.760069][ T72] ipv6_find_idev+0x102/0x170 [ 1658.760069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.760069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.760069][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.760069][ T72] netlink_unicast+0x449/0x710 [ 1658.760069][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.760069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.760069][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.760069][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.760069][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.760069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.760069][ T72] [ 1658.761903][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1658.761903][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.761903][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.761903][ T72] ipv6_find_idev+0x102/0x170 [ 1658.761903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.761903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.761903][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.761903][ T72] netlink_unicast+0x449/0x710 [ 1658.761903][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.761903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.761903][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.761903][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.761903][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.761903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.761903][ T72] [ 1658.763928][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1658.764251][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1658.764251][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.764251][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.764251][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.764251][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.764251][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.764251][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.764251][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.764251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.764251][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.764251][ T72] netlink_unicast+0x449/0x710 [ 1658.764251][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.764251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.764251][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.764251][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.764251][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.764251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.764251][ T72] [ 1658.766689][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1658.766689][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.766689][ T72] ipv6_find_idev+0x102/0x170 [ 1658.766689][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.766689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.766689][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.766689][ T72] netlink_unicast+0x449/0x710 [ 1658.766689][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.766689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.766689][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.766689][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.766689][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.766689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.766689][ T72] [ 1658.768570][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1658.768570][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.768570][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.768570][ T72] ipv6_find_idev+0x102/0x170 [ 1658.768570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.768570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.768570][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.768570][ T72] netlink_unicast+0x449/0x710 [ 1658.768570][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.768570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.768570][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.768570][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.768570][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.768570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.768570][ T72] [ 1658.771048][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1658.771360][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1658.771360][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.771360][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.771360][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.771360][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.771360][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.771360][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.771360][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.771360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.771360][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.771360][ T72] netlink_unicast+0x449/0x710 [ 1658.771360][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.771360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.771360][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.771360][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.771360][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.771360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.771360][ T72] [ 1658.773823][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1658.773823][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.773823][ T72] ipv6_find_idev+0x102/0x170 [ 1658.773823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.773823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.773823][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.773823][ T72] netlink_unicast+0x449/0x710 [ 1658.773823][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.773823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.773823][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.773823][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.773823][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.773823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.773823][ T72] [ 1658.775785][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1658.775785][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.775785][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.775785][ T72] ipv6_find_idev+0x102/0x170 [ 1658.775785][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.775785][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.775785][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.775785][ T72] netlink_unicast+0x449/0x710 [ 1658.775785][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.775785][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.775785][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.775785][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.775785][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.775785][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.775785][ T72] [ 1658.777881][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1658.778193][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1658.778193][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.778193][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.778193][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.778193][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.778193][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.778193][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.778193][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.778193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.778193][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.778193][ T72] netlink_unicast+0x449/0x710 [ 1658.778193][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.778193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.778193][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.778193][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.778193][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.778193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.778193][ T72] [ 1658.780758][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1658.780758][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.780758][ T72] ipv6_find_idev+0x102/0x170 [ 1658.780758][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.780758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.780758][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.780758][ T72] netlink_unicast+0x449/0x710 [ 1658.780758][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.780758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.780758][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.780758][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.780758][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.780758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.780758][ T72] [ 1658.782822][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1658.782822][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.782822][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.782822][ T72] ipv6_find_idev+0x102/0x170 [ 1658.782822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.782822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.782822][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.782822][ T72] netlink_unicast+0x449/0x710 [ 1658.782822][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.782822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.782822][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.782822][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.782822][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.782822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.782822][ T72] [ 1658.785171][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1658.785479][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1658.785479][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.785479][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.785479][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.785479][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.785479][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.785479][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.785479][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.785479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.785479][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.785479][ T72] netlink_unicast+0x449/0x710 [ 1658.785479][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.785479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.785479][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.785479][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.785479][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.785479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.785479][ T72] [ 1658.788141][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1658.788141][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.788141][ T72] ipv6_find_idev+0x102/0x170 [ 1658.788141][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.788141][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.788141][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.788141][ T72] netlink_unicast+0x449/0x710 [ 1658.788141][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.788141][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.788141][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.788141][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.788141][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.788141][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.788141][ T72] [ 1658.790213][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1658.790213][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.790213][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.790213][ T72] ipv6_find_idev+0x102/0x170 [ 1658.790213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.790213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.790213][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.790213][ T72] netlink_unicast+0x449/0x710 [ 1658.790213][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.790213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.790213][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.790213][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.790213][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.790213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.790213][ T72] [ 1658.792535][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1658.792910][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1658.792910][ T72] netdev_get_by_index+0x5e/0x80 [ 1658.792910][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1658.792910][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1658.792910][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1658.792910][ T72] ipv6_add_addr+0x411/0x2000 [ 1658.792910][ T72] inet6_addr_add+0x30e/0xa40 [ 1658.792910][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1658.792910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.792910][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.792910][ T72] netlink_unicast+0x449/0x710 [ 1658.792910][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.792910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.792910][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.792910][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.792910][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.792910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.792910][ T72] [ 1658.795547][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1658.795547][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1658.795547][ T72] ipv6_find_idev+0x102/0x170 [ 1658.795547][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.795547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.795547][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.795547][ T72] netlink_unicast+0x449/0x710 [ 1658.795547][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.795547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.795547][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.795547][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.795547][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.795547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.795547][ T72] [ 1658.797588][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1658.797588][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1658.797588][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1658.797588][ T72] ipv6_find_idev+0x102/0x170 [ 1658.797588][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1658.797588][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1658.797588][ T72] netlink_rcv_skb+0x130/0x360 [ 1658.797588][ T72] netlink_unicast+0x449/0x710 [ 1658.797588][ T72] netlink_sendmsg+0x723/0xbe0 [ 1658.797588][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1658.797588][ T72] ___sys_sendmsg+0xee/0x170 [ 1658.797588][ T72] __sys_sendmsg+0xcd/0x170 [ 1658.797588][ T72] do_syscall_64+0xc6/0x1e0 [ 1658.797588][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1658.797588][ T72] [ 1669.038886][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1669.039366][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1669.039366][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.039366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.039366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.039366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.039366][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.039366][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.039366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.039366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.039366][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.039366][ T72] netlink_unicast+0x449/0x710 [ 1669.039366][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.039366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.039366][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.039366][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.039366][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.039366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.039366][ T72] [ 1669.041796][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1669.041796][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.041796][ T72] ipv6_find_idev+0x102/0x170 [ 1669.041796][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.041796][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.041796][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.041796][ T72] netlink_unicast+0x449/0x710 [ 1669.041796][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.041796][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.041796][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.041796][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.041796][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.041796][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.041796][ T72] [ 1669.043676][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1669.043676][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.043676][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.043676][ T72] ipv6_find_idev+0x102/0x170 [ 1669.043676][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.043676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.043676][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.043676][ T72] netlink_unicast+0x449/0x710 [ 1669.043676][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.043676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.043676][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.043676][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.043676][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.043676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.043676][ T72] [ 1669.045709][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1669.046038][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1669.046038][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.046038][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.046038][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.046038][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.046038][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.046038][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.046038][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.046038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.046038][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.046038][ T72] netlink_unicast+0x449/0x710 [ 1669.046038][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.046038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.046038][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.046038][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.046038][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.046038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.046038][ T72] [ 1669.048464][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1669.048464][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.048464][ T72] ipv6_find_idev+0x102/0x170 [ 1669.048464][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.048464][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.048464][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.048464][ T72] netlink_unicast+0x449/0x710 [ 1669.048464][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.048464][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.048464][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.048464][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.048464][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.048464][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.048464][ T72] [ 1669.050320][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1669.050320][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.050320][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.050320][ T72] ipv6_find_idev+0x102/0x170 [ 1669.050320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.050320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.050320][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.050320][ T72] netlink_unicast+0x449/0x710 [ 1669.050320][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.050320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.050320][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.050320][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.050320][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.050320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.050320][ T72] [ 1669.052366][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1669.052680][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1669.052680][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.052680][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.052680][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.052680][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.052680][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.052680][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.052680][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.052680][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.052680][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.052680][ T72] netlink_unicast+0x449/0x710 [ 1669.052680][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.052680][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.052680][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.052680][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.052680][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.052680][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.052680][ T72] [ 1669.055115][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1669.055115][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.055115][ T72] ipv6_find_idev+0x102/0x170 [ 1669.055115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.055115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.055115][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.055115][ T72] netlink_unicast+0x449/0x710 [ 1669.055115][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.055115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.055115][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.055115][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.055115][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.055115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.055115][ T72] [ 1669.056982][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1669.056982][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.056982][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.056982][ T72] ipv6_find_idev+0x102/0x170 [ 1669.056982][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.056982][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.056982][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.056982][ T72] netlink_unicast+0x449/0x710 [ 1669.056982][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.056982][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.056982][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.056982][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.056982][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.056982][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.056982][ T72] [ 1669.059007][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1669.059318][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1669.059318][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.059318][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.059318][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.059318][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.059318][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.059318][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.059318][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.059318][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.059318][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.059318][ T72] netlink_unicast+0x449/0x710 [ 1669.059318][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.059318][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.059318][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.059318][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.059318][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.059318][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.059318][ T72] [ 1669.061723][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1669.061723][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.061723][ T72] ipv6_find_idev+0x102/0x170 [ 1669.061723][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.061723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.061723][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.061723][ T72] netlink_unicast+0x449/0x710 [ 1669.061723][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.061723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.061723][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.061723][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.061723][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.061723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.061723][ T72] [ 1669.063596][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1669.063596][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.063596][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.063596][ T72] ipv6_find_idev+0x102/0x170 [ 1669.063596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.063596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.063596][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.063596][ T72] netlink_unicast+0x449/0x710 [ 1669.063596][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.063596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.063596][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.063596][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.063596][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.063596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.063596][ T72] [ 1669.065907][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1669.066194][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1669.066194][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.066194][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.066194][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.066194][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.066194][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.066194][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.066194][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.066194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.066194][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.066194][ T72] netlink_unicast+0x449/0x710 [ 1669.066194][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.066194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.066194][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.066194][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.066194][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.066194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.066194][ T72] [ 1669.068415][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1669.068415][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.068415][ T72] ipv6_find_idev+0x102/0x170 [ 1669.068415][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.068415][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.068415][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.068415][ T72] netlink_unicast+0x449/0x710 [ 1669.068415][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.068415][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.068415][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.068415][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.068415][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.068415][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.068415][ T72] [ 1669.070124][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1669.070124][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.070124][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.070124][ T72] ipv6_find_idev+0x102/0x170 [ 1669.070124][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.070124][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.070124][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.070124][ T72] netlink_unicast+0x449/0x710 [ 1669.070124][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.070124][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.070124][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.070124][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.070124][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.070124][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.070124][ T72] [ 1669.072058][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1669.072353][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1669.072353][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.072353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.072353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.072353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.072353][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.072353][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.072353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.072353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.072353][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.072353][ T72] netlink_unicast+0x449/0x710 [ 1669.072353][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.072353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.072353][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.072353][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.072353][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.072353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.072353][ T72] [ 1669.074714][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1669.074714][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.074714][ T72] ipv6_find_idev+0x102/0x170 [ 1669.074714][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.074714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.074714][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.074714][ T72] netlink_unicast+0x449/0x710 [ 1669.074714][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.074714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.074714][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.074714][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.074714][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.074714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.074714][ T72] [ 1669.076647][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1669.076647][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.076647][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.076647][ T72] ipv6_find_idev+0x102/0x170 [ 1669.076647][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.076647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.076647][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.076647][ T72] netlink_unicast+0x449/0x710 [ 1669.076647][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.076647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.076647][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.076647][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.076647][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.076647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.076647][ T72] [ 1669.078828][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1669.079117][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1669.079117][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.079117][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.079117][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.079117][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.079117][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.079117][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.079117][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.079117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.079117][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.079117][ T72] netlink_unicast+0x449/0x710 [ 1669.079117][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.079117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.079117][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.079117][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.079117][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.079117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.079117][ T72] [ 1669.081520][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1669.081520][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.081520][ T72] ipv6_find_idev+0x102/0x170 [ 1669.081520][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.081520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.081520][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.081520][ T72] netlink_unicast+0x449/0x710 [ 1669.081520][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.081520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.081520][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.081520][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.081520][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.081520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.081520][ T72] [ 1669.083418][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1669.083418][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.083418][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.083418][ T72] ipv6_find_idev+0x102/0x170 [ 1669.083418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.083418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.083418][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.083418][ T72] netlink_unicast+0x449/0x710 [ 1669.083418][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.083418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.083418][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.083418][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.083418][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.083418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.083418][ T72] [ 1669.085575][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1669.085923][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1669.085923][ T72] netdev_get_by_index+0x5e/0x80 [ 1669.085923][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1669.085923][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1669.085923][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1669.085923][ T72] ipv6_add_addr+0x411/0x2000 [ 1669.085923][ T72] inet6_addr_add+0x30e/0xa40 [ 1669.085923][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1669.085923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.085923][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.085923][ T72] netlink_unicast+0x449/0x710 [ 1669.085923][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.085923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.085923][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.085923][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.085923][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.085923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.085923][ T72] [ 1669.088391][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1669.088391][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1669.088391][ T72] ipv6_find_idev+0x102/0x170 [ 1669.088391][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.088391][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.088391][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.088391][ T72] netlink_unicast+0x449/0x710 [ 1669.088391][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.088391][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.088391][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.088391][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.088391][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.088391][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.088391][ T72] [ 1669.090285][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1669.090285][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1669.090285][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1669.090285][ T72] ipv6_find_idev+0x102/0x170 [ 1669.090285][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1669.090285][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1669.090285][ T72] netlink_rcv_skb+0x130/0x360 [ 1669.090285][ T72] netlink_unicast+0x449/0x710 [ 1669.090285][ T72] netlink_sendmsg+0x723/0xbe0 [ 1669.090285][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1669.090285][ T72] ___sys_sendmsg+0xee/0x170 [ 1669.090285][ T72] __sys_sendmsg+0xcd/0x170 [ 1669.090285][ T72] do_syscall_64+0xc6/0x1e0 [ 1669.090285][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1669.090285][ T72] [ 1679.334898][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1679.335403][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1679.335403][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.335403][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.335403][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.335403][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.335403][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.335403][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.335403][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.335403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.335403][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.335403][ T72] netlink_unicast+0x449/0x710 [ 1679.335403][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.335403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.335403][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.335403][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.335403][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.335403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.335403][ T72] [ 1679.337659][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1679.337659][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.337659][ T72] ipv6_find_idev+0x102/0x170 [ 1679.337659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.337659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.337659][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.337659][ T72] netlink_unicast+0x449/0x710 [ 1679.337659][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.337659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.337659][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.337659][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.337659][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.337659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.337659][ T72] [ 1679.339371][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1679.339371][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.339371][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.339371][ T72] ipv6_find_idev+0x102/0x170 [ 1679.339371][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.339371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.339371][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.339371][ T72] netlink_unicast+0x449/0x710 [ 1679.339371][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.339371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.339371][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.339371][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.339371][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.339371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.339371][ T72] [ 1679.341278][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1679.341581][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1679.341581][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.341581][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.341581][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.341581][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.341581][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.341581][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.341581][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.341581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.341581][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.341581][ T72] netlink_unicast+0x449/0x710 [ 1679.341581][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.341581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.341581][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.341581][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.341581][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.341581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.341581][ T72] [ 1679.343827][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1679.343827][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.343827][ T72] ipv6_find_idev+0x102/0x170 [ 1679.343827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.343827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.343827][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.343827][ T72] netlink_unicast+0x449/0x710 [ 1679.343827][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.343827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.343827][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.343827][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.343827][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.343827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.343827][ T72] [ 1679.345556][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1679.345556][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.345556][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.345556][ T72] ipv6_find_idev+0x102/0x170 [ 1679.345556][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.345556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.345556][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.345556][ T72] netlink_unicast+0x449/0x710 [ 1679.345556][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.345556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.345556][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.345556][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.345556][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.345556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.345556][ T72] [ 1679.347528][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1679.347850][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1679.347850][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.347850][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.347850][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.347850][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.347850][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.347850][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.347850][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.347850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.347850][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.347850][ T72] netlink_unicast+0x449/0x710 [ 1679.347850][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.347850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.347850][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.347850][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.347850][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.347850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.347850][ T72] [ 1679.350251][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1679.350251][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.350251][ T72] ipv6_find_idev+0x102/0x170 [ 1679.350251][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.350251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.350251][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.350251][ T72] netlink_unicast+0x449/0x710 [ 1679.350251][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.350251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.350251][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.350251][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.350251][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.350251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.350251][ T72] [ 1679.352104][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1679.352104][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.352104][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.352104][ T72] ipv6_find_idev+0x102/0x170 [ 1679.352104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.352104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.352104][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.352104][ T72] netlink_unicast+0x449/0x710 [ 1679.352104][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.352104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.352104][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.352104][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.352104][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.352104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.352104][ T72] [ 1679.354154][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1679.354465][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1679.354465][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.354465][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.354465][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.354465][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.354465][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.354465][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.354465][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.354465][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.354465][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.354465][ T72] netlink_unicast+0x449/0x710 [ 1679.354465][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.354465][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.354465][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.354465][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.354465][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.354465][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.354465][ T72] [ 1679.356878][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1679.356878][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.356878][ T72] ipv6_find_idev+0x102/0x170 [ 1679.356878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.356878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.356878][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.356878][ T72] netlink_unicast+0x449/0x710 [ 1679.356878][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.356878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.356878][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.356878][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.356878][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.356878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.356878][ T72] [ 1679.358734][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1679.358734][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.358734][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.358734][ T72] ipv6_find_idev+0x102/0x170 [ 1679.358734][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.358734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.358734][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.358734][ T72] netlink_unicast+0x449/0x710 [ 1679.358734][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.358734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.358734][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.358734][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.358734][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.358734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.358734][ T72] [ 1679.361113][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1679.361409][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1679.361409][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.361409][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.361409][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.361409][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.361409][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.361409][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.361409][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.361409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.361409][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.361409][ T72] netlink_unicast+0x449/0x710 [ 1679.361409][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.361409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.361409][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.361409][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.361409][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.361409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.361409][ T72] [ 1679.363624][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1679.363624][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.363624][ T72] ipv6_find_idev+0x102/0x170 [ 1679.363624][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.363624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.363624][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.363624][ T72] netlink_unicast+0x449/0x710 [ 1679.363624][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.363624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.363624][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.363624][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.363624][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.363624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.363624][ T72] [ 1679.365338][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1679.365338][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.365338][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.365338][ T72] ipv6_find_idev+0x102/0x170 [ 1679.365338][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.365338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.365338][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.365338][ T72] netlink_unicast+0x449/0x710 [ 1679.365338][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.365338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.365338][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.365338][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.365338][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.365338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.365338][ T72] [ 1679.367259][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1679.367547][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1679.367547][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.367547][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.367547][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.367547][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.367547][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.367547][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.367547][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.367547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.367547][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.367547][ T72] netlink_unicast+0x449/0x710 [ 1679.367547][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.367547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.367547][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.367547][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.367547][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.367547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.367547][ T72] [ 1679.369874][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1679.369874][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.369874][ T72] ipv6_find_idev+0x102/0x170 [ 1679.369874][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.369874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.369874][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.369874][ T72] netlink_unicast+0x449/0x710 [ 1679.369874][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.369874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.369874][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.369874][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.369874][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.369874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.369874][ T72] [ 1679.371821][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1679.371821][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.371821][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.371821][ T72] ipv6_find_idev+0x102/0x170 [ 1679.371821][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.371821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.371821][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.371821][ T72] netlink_unicast+0x449/0x710 [ 1679.371821][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.371821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.371821][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.371821][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.371821][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.371821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.371821][ T72] [ 1679.374001][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1679.374286][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1679.374286][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.374286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.374286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.374286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.374286][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.374286][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.374286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.374286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.374286][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.374286][ T72] netlink_unicast+0x449/0x710 [ 1679.374286][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.374286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.374286][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.374286][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.374286][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.374286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.374286][ T72] [ 1679.377191][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1679.377191][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.377191][ T72] ipv6_find_idev+0x102/0x170 [ 1679.377191][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.377191][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.377191][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.377191][ T72] netlink_unicast+0x449/0x710 [ 1679.377191][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.377191][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.377191][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.377191][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.377191][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.377191][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.377191][ T72] [ 1679.379093][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1679.379093][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.379093][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.379093][ T72] ipv6_find_idev+0x102/0x170 [ 1679.379093][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.379093][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.379093][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.379093][ T72] netlink_unicast+0x449/0x710 [ 1679.379093][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.379093][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.379093][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.379093][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.379093][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.379093][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.379093][ T72] [ 1679.381249][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1679.381542][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1679.381542][ T72] netdev_get_by_index+0x5e/0x80 [ 1679.381542][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1679.381542][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1679.381542][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1679.381542][ T72] ipv6_add_addr+0x411/0x2000 [ 1679.381542][ T72] inet6_addr_add+0x30e/0xa40 [ 1679.381542][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1679.381542][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.381542][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.381542][ T72] netlink_unicast+0x449/0x710 [ 1679.381542][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.381542][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.381542][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.381542][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.381542][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.381542][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.381542][ T72] [ 1679.384019][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1679.384019][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1679.384019][ T72] ipv6_find_idev+0x102/0x170 [ 1679.384019][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.384019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.384019][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.384019][ T72] netlink_unicast+0x449/0x710 [ 1679.384019][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.384019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.384019][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.384019][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.384019][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.384019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.384019][ T72] [ 1679.385904][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1679.385904][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1679.385904][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1679.385904][ T72] ipv6_find_idev+0x102/0x170 [ 1679.385904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1679.385904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1679.385904][ T72] netlink_rcv_skb+0x130/0x360 [ 1679.385904][ T72] netlink_unicast+0x449/0x710 [ 1679.385904][ T72] netlink_sendmsg+0x723/0xbe0 [ 1679.385904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1679.385904][ T72] ___sys_sendmsg+0xee/0x170 [ 1679.385904][ T72] __sys_sendmsg+0xcd/0x170 [ 1679.385904][ T72] do_syscall_64+0xc6/0x1e0 [ 1679.385904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1679.385904][ T72] [ 1689.630875][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1689.631309][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1689.631309][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.631309][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.631309][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.631309][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.631309][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.631309][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.631309][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.631309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.631309][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.631309][ T72] netlink_unicast+0x449/0x710 [ 1689.631309][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.631309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.631309][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.631309][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.631309][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.631309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.631309][ T72] [ 1689.633505][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1689.633505][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.633505][ T72] ipv6_find_idev+0x102/0x170 [ 1689.633505][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.633505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.633505][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.633505][ T72] netlink_unicast+0x449/0x710 [ 1689.633505][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.633505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.633505][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.633505][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.633505][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.633505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.633505][ T72] [ 1689.635173][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1689.635173][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.635173][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.635173][ T72] ipv6_find_idev+0x102/0x170 [ 1689.635173][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.635173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.635173][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.635173][ T72] netlink_unicast+0x449/0x710 [ 1689.635173][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.635173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.635173][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.635173][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.635173][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.635173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.635173][ T72] [ 1689.636995][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1689.637280][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1689.637280][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.637280][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.637280][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.637280][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.637280][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.637280][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.637280][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.637280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.637280][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.637280][ T72] netlink_unicast+0x449/0x710 [ 1689.637280][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.637280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.637280][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.637280][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.637280][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.637280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.637280][ T72] [ 1689.639431][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1689.639431][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.639431][ T72] ipv6_find_idev+0x102/0x170 [ 1689.639431][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.639431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.639431][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.639431][ T72] netlink_unicast+0x449/0x710 [ 1689.639431][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.639431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.639431][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.639431][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.639431][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.639431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.639431][ T72] [ 1689.641091][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1689.641091][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.641091][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.641091][ T72] ipv6_find_idev+0x102/0x170 [ 1689.641091][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.641091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.641091][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.641091][ T72] netlink_unicast+0x449/0x710 [ 1689.641091][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.641091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.641091][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.641091][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.641091][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.641091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.641091][ T72] [ 1689.642901][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1689.643191][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1689.643191][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.643191][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.643191][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.643191][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.643191][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.643191][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.643191][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.643191][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.643191][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.643191][ T72] netlink_unicast+0x449/0x710 [ 1689.643191][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.643191][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.643191][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.643191][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.643191][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.643191][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.643191][ T72] [ 1689.645342][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1689.645342][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.645342][ T72] ipv6_find_idev+0x102/0x170 [ 1689.645342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.645342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.645342][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.645342][ T72] netlink_unicast+0x449/0x710 [ 1689.645342][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.645342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.645342][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.645342][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.645342][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.645342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.645342][ T72] [ 1689.646996][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1689.646996][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.646996][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.646996][ T72] ipv6_find_idev+0x102/0x170 [ 1689.646996][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.646996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.646996][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.646996][ T72] netlink_unicast+0x449/0x710 [ 1689.646996][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.646996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.646996][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.646996][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.646996][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.646996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.646996][ T72] [ 1689.648809][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1689.649095][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1689.649095][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.649095][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.649095][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.649095][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.649095][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.649095][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.649095][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.649095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.649095][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.649095][ T72] netlink_unicast+0x449/0x710 [ 1689.649095][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.649095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.649095][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.649095][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.649095][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.649095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.649095][ T72] [ 1689.651180][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1689.651180][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.651180][ T72] ipv6_find_idev+0x102/0x170 [ 1689.651180][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.651180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.651180][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.651180][ T72] netlink_unicast+0x449/0x710 [ 1689.651180][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.651180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.651180][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.651180][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.651180][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.651180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.651180][ T72] [ 1689.652855][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1689.652855][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.652855][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.652855][ T72] ipv6_find_idev+0x102/0x170 [ 1689.652855][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.652855][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.652855][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.652855][ T72] netlink_unicast+0x449/0x710 [ 1689.652855][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.652855][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.652855][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.652855][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.652855][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.652855][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.652855][ T72] [ 1689.655100][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1689.655388][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1689.655388][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.655388][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.655388][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.655388][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.655388][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.655388][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.655388][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.655388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.655388][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.655388][ T72] netlink_unicast+0x449/0x710 [ 1689.655388][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.655388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.655388][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.655388][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.655388][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.655388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.655388][ T72] [ 1689.657534][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1689.657534][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.657534][ T72] ipv6_find_idev+0x102/0x170 [ 1689.657534][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.657534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.657534][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.657534][ T72] netlink_unicast+0x449/0x710 [ 1689.657534][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.657534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.657534][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.657534][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.657534][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.657534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.657534][ T72] [ 1689.659191][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1689.659191][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.659191][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.659191][ T72] ipv6_find_idev+0x102/0x170 [ 1689.659191][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.659191][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.659191][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.659191][ T72] netlink_unicast+0x449/0x710 [ 1689.659191][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.659191][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.659191][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.659191][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.659191][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.659191][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.659191][ T72] [ 1689.661043][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1689.661326][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1689.661326][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.661326][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.661326][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.661326][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.661326][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.661326][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.661326][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.661326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.661326][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.661326][ T72] netlink_unicast+0x449/0x710 [ 1689.661326][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.661326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.661326][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.661326][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.661326][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.661326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.661326][ T72] [ 1689.663601][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1689.663601][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.663601][ T72] ipv6_find_idev+0x102/0x170 [ 1689.663601][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.663601][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.663601][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.663601][ T72] netlink_unicast+0x449/0x710 [ 1689.663601][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.663601][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.663601][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.663601][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.663601][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.663601][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.663601][ T72] [ 1689.665493][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1689.665493][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.665493][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.665493][ T72] ipv6_find_idev+0x102/0x170 [ 1689.665493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.665493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.665493][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.665493][ T72] netlink_unicast+0x449/0x710 [ 1689.665493][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.665493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.665493][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.665493][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.665493][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.665493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.665493][ T72] [ 1689.667569][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1689.667898][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1689.667898][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.667898][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.667898][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.667898][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.667898][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.667898][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.667898][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.667898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.667898][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.667898][ T72] netlink_unicast+0x449/0x710 [ 1689.667898][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.667898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.667898][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.667898][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.667898][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.667898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.667898][ T72] [ 1689.670161][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1689.670161][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.670161][ T72] ipv6_find_idev+0x102/0x170 [ 1689.670161][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.670161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.670161][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.670161][ T72] netlink_unicast+0x449/0x710 [ 1689.670161][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.670161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.670161][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.670161][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.670161][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.670161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.670161][ T72] [ 1689.671994][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1689.671994][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.671994][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.671994][ T72] ipv6_find_idev+0x102/0x170 [ 1689.671994][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.671994][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.671994][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.671994][ T72] netlink_unicast+0x449/0x710 [ 1689.671994][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.671994][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.671994][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.671994][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.671994][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.671994][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.671994][ T72] [ 1689.674025][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1689.674304][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1689.674304][ T72] netdev_get_by_index+0x5e/0x80 [ 1689.674304][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1689.674304][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1689.674304][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1689.674304][ T72] ipv6_add_addr+0x411/0x2000 [ 1689.674304][ T72] inet6_addr_add+0x30e/0xa40 [ 1689.674304][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1689.674304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.674304][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.674304][ T72] netlink_unicast+0x449/0x710 [ 1689.674304][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.674304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.674304][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.674304][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.674304][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.674304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.674304][ T72] [ 1689.676688][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1689.676688][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1689.676688][ T72] ipv6_find_idev+0x102/0x170 [ 1689.676688][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.676688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.676688][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.676688][ T72] netlink_unicast+0x449/0x710 [ 1689.676688][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.676688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.676688][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.676688][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.676688][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.676688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.676688][ T72] [ 1689.678520][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1689.678520][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1689.678520][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1689.678520][ T72] ipv6_find_idev+0x102/0x170 [ 1689.678520][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1689.678520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1689.678520][ T72] netlink_rcv_skb+0x130/0x360 [ 1689.678520][ T72] netlink_unicast+0x449/0x710 [ 1689.678520][ T72] netlink_sendmsg+0x723/0xbe0 [ 1689.678520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1689.678520][ T72] ___sys_sendmsg+0xee/0x170 [ 1689.678520][ T72] __sys_sendmsg+0xcd/0x170 [ 1689.678520][ T72] do_syscall_64+0xc6/0x1e0 [ 1689.678520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1689.678520][ T72] [ 1699.918867][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1699.919279][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1699.919279][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.919279][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.919279][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.919279][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.919279][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.919279][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.919279][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.919279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.919279][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.919279][ T72] netlink_unicast+0x449/0x710 [ 1699.919279][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.919279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.919279][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.919279][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.919279][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.919279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.919279][ T72] [ 1699.921454][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1699.921454][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.921454][ T72] ipv6_find_idev+0x102/0x170 [ 1699.921454][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.921454][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.921454][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.921454][ T72] netlink_unicast+0x449/0x710 [ 1699.921454][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.921454][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.921454][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.921454][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.921454][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.921454][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.921454][ T72] [ 1699.923123][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1699.923123][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.923123][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.923123][ T72] ipv6_find_idev+0x102/0x170 [ 1699.923123][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.923123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.923123][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.923123][ T72] netlink_unicast+0x449/0x710 [ 1699.923123][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.923123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.923123][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.923123][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.923123][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.923123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.923123][ T72] [ 1699.924942][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1699.925238][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1699.925238][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.925238][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.925238][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.925238][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.925238][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.925238][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.925238][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.925238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.925238][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.925238][ T72] netlink_unicast+0x449/0x710 [ 1699.925238][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.925238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.925238][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.925238][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.925238][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.925238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.925238][ T72] [ 1699.927396][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1699.927396][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.927396][ T72] ipv6_find_idev+0x102/0x170 [ 1699.927396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.927396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.927396][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.927396][ T72] netlink_unicast+0x449/0x710 [ 1699.927396][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.927396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.927396][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.927396][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.927396][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.927396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.927396][ T72] [ 1699.929050][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1699.929050][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.929050][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.929050][ T72] ipv6_find_idev+0x102/0x170 [ 1699.929050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.929050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.929050][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.929050][ T72] netlink_unicast+0x449/0x710 [ 1699.929050][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.929050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.929050][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.929050][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.929050][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.929050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.929050][ T72] [ 1699.930854][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1699.931138][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1699.931138][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.931138][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.931138][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.931138][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.931138][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.931138][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.931138][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.931138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.931138][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.931138][ T72] netlink_unicast+0x449/0x710 [ 1699.931138][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.931138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.931138][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.931138][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.931138][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.931138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.931138][ T72] [ 1699.933292][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1699.933292][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.933292][ T72] ipv6_find_idev+0x102/0x170 [ 1699.933292][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.933292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.933292][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.933292][ T72] netlink_unicast+0x449/0x710 [ 1699.933292][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.933292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.933292][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.933292][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.933292][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.933292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.933292][ T72] [ 1699.934944][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1699.934944][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.934944][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.934944][ T72] ipv6_find_idev+0x102/0x170 [ 1699.934944][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.934944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.934944][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.934944][ T72] netlink_unicast+0x449/0x710 [ 1699.934944][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.934944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.934944][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.934944][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.934944][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.934944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.934944][ T72] [ 1699.936760][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1699.937043][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1699.937043][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.937043][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.937043][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.937043][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.937043][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.937043][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.937043][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.937043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.937043][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.937043][ T72] netlink_unicast+0x449/0x710 [ 1699.937043][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.937043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.937043][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.937043][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.937043][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.937043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.937043][ T72] [ 1699.939185][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1699.939185][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.939185][ T72] ipv6_find_idev+0x102/0x170 [ 1699.939185][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.939185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.939185][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.939185][ T72] netlink_unicast+0x449/0x710 [ 1699.939185][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.939185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.939185][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.939185][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.939185][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.939185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.939185][ T72] [ 1699.940841][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1699.940841][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.940841][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.940841][ T72] ipv6_find_idev+0x102/0x170 [ 1699.940841][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.940841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.940841][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.940841][ T72] netlink_unicast+0x449/0x710 [ 1699.940841][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.940841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.940841][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.940841][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.940841][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.940841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.940841][ T72] [ 1699.942649][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1699.942996][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1699.942996][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.942996][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.942996][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.942996][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.942996][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.942996][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.942996][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.942996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.942996][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.942996][ T72] netlink_unicast+0x449/0x710 [ 1699.942996][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.942996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.942996][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.942996][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.942996][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.942996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.942996][ T72] [ 1699.945146][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1699.945146][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.945146][ T72] ipv6_find_idev+0x102/0x170 [ 1699.945146][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.945146][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.945146][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.945146][ T72] netlink_unicast+0x449/0x710 [ 1699.945146][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.945146][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.945146][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.945146][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.945146][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.945146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.945146][ T72] [ 1699.946809][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1699.946809][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.946809][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.946809][ T72] ipv6_find_idev+0x102/0x170 [ 1699.946809][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.946809][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.946809][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.946809][ T72] netlink_unicast+0x449/0x710 [ 1699.946809][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.946809][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.946809][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.946809][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.946809][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.946809][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.946809][ T72] [ 1699.948961][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1699.949247][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1699.949247][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.949247][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.949247][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.949247][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.949247][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.949247][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.949247][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.949247][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.949247][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.949247][ T72] netlink_unicast+0x449/0x710 [ 1699.949247][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.949247][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.949247][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.949247][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.949247][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.949247][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.949247][ T72] [ 1699.951568][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1699.951568][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.951568][ T72] ipv6_find_idev+0x102/0x170 [ 1699.951568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.951568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.951568][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.951568][ T72] netlink_unicast+0x449/0x710 [ 1699.951568][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.951568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.951568][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.951568][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.951568][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.951568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.951568][ T72] [ 1699.953407][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1699.953407][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.953407][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.953407][ T72] ipv6_find_idev+0x102/0x170 [ 1699.953407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.953407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.953407][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.953407][ T72] netlink_unicast+0x449/0x710 [ 1699.953407][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.953407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.953407][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.953407][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.953407][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.953407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.953407][ T72] [ 1699.955448][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1699.955726][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1699.955726][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.955726][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.955726][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.955726][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.955726][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.955726][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.955726][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.955726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.955726][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.955726][ T72] netlink_unicast+0x449/0x710 [ 1699.955726][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.955726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.955726][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.955726][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.955726][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.955726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.955726][ T72] [ 1699.958122][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1699.958122][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.958122][ T72] ipv6_find_idev+0x102/0x170 [ 1699.958122][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.958122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.958122][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.958122][ T72] netlink_unicast+0x449/0x710 [ 1699.958122][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.958122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.958122][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.958122][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.958122][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.958122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.958122][ T72] [ 1699.959957][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1699.959957][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.959957][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.959957][ T72] ipv6_find_idev+0x102/0x170 [ 1699.959957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.959957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.959957][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.959957][ T72] netlink_unicast+0x449/0x710 [ 1699.959957][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.959957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.959957][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.959957][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.959957][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.959957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.959957][ T72] [ 1699.961977][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1699.962262][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1699.962262][ T72] netdev_get_by_index+0x5e/0x80 [ 1699.962262][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1699.962262][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1699.962262][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1699.962262][ T72] ipv6_add_addr+0x411/0x2000 [ 1699.962262][ T72] inet6_addr_add+0x30e/0xa40 [ 1699.962262][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1699.962262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.962262][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.962262][ T72] netlink_unicast+0x449/0x710 [ 1699.962262][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.962262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.962262][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.962262][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.962262][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.962262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.962262][ T72] [ 1699.964674][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1699.964674][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1699.964674][ T72] ipv6_find_idev+0x102/0x170 [ 1699.964674][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.964674][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.964674][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.964674][ T72] netlink_unicast+0x449/0x710 [ 1699.964674][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.964674][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.964674][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.964674][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.964674][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.964674][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.964674][ T72] [ 1699.966508][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1699.966508][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1699.966508][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1699.966508][ T72] ipv6_find_idev+0x102/0x170 [ 1699.966508][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1699.966508][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1699.966508][ T72] netlink_rcv_skb+0x130/0x360 [ 1699.966508][ T72] netlink_unicast+0x449/0x710 [ 1699.966508][ T72] netlink_sendmsg+0x723/0xbe0 [ 1699.966508][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1699.966508][ T72] ___sys_sendmsg+0xee/0x170 [ 1699.966508][ T72] __sys_sendmsg+0xcd/0x170 [ 1699.966508][ T72] do_syscall_64+0xc6/0x1e0 [ 1699.966508][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1699.966508][ T72] [ 1710.062799][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1710.063293][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1710.063293][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.063293][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.063293][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.063293][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.063293][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.063293][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.063293][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.063293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.063293][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.063293][ T72] netlink_unicast+0x449/0x710 [ 1710.063293][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.063293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.063293][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.063293][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.063293][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.063293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.063293][ T72] [ 1710.065281][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1710.065281][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.065281][ T72] ipv6_find_idev+0x102/0x170 [ 1710.065281][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.065281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.065281][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.065281][ T72] netlink_unicast+0x449/0x710 [ 1710.065281][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.065281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.065281][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.065281][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.065281][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.065281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.065281][ T72] [ 1710.066795][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1710.066795][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.066795][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.066795][ T72] ipv6_find_idev+0x102/0x170 [ 1710.066795][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.066795][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.066795][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.066795][ T72] netlink_unicast+0x449/0x710 [ 1710.066795][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.066795][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.066795][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.066795][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.066795][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.066795][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.066795][ T72] [ 1710.068445][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1710.068704][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1710.068704][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.068704][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.068704][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.068704][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.068704][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.068704][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.068704][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.068704][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.068704][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.068704][ T72] netlink_unicast+0x449/0x710 [ 1710.068704][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.068704][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.068704][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.068704][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.068704][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.068704][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.068704][ T72] [ 1710.070661][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1710.070661][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.070661][ T72] ipv6_find_idev+0x102/0x170 [ 1710.070661][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.070661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.070661][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.070661][ T72] netlink_unicast+0x449/0x710 [ 1710.070661][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.070661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.070661][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.070661][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.070661][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.070661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.070661][ T72] [ 1710.072171][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1710.072171][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.072171][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.072171][ T72] ipv6_find_idev+0x102/0x170 [ 1710.072171][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.072171][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.072171][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.072171][ T72] netlink_unicast+0x449/0x710 [ 1710.072171][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.072171][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.072171][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.072171][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.072171][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.072171][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.072171][ T72] [ 1710.073838][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1710.074095][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1710.074095][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.074095][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.074095][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.074095][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.074095][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.074095][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.074095][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.074095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.074095][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.074095][ T72] netlink_unicast+0x449/0x710 [ 1710.074095][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.074095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.074095][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.074095][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.074095][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.074095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.074095][ T72] [ 1710.076062][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1710.076062][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.076062][ T72] ipv6_find_idev+0x102/0x170 [ 1710.076062][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.076062][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.076062][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.076062][ T72] netlink_unicast+0x449/0x710 [ 1710.076062][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.076062][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.076062][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.076062][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.076062][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.076062][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.076062][ T72] [ 1710.077568][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1710.077568][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.077568][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.077568][ T72] ipv6_find_idev+0x102/0x170 [ 1710.077568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.077568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.077568][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.077568][ T72] netlink_unicast+0x449/0x710 [ 1710.077568][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.077568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.077568][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.077568][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.077568][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.077568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.077568][ T72] [ 1710.079225][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1710.079497][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1710.079497][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.079497][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.079497][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.079497][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.079497][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.079497][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.079497][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.079497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.079497][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.079497][ T72] netlink_unicast+0x449/0x710 [ 1710.079497][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.079497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.079497][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.079497][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.079497][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.079497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.079497][ T72] [ 1710.081445][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1710.081445][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.081445][ T72] ipv6_find_idev+0x102/0x170 [ 1710.081445][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.081445][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.081445][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.081445][ T72] netlink_unicast+0x449/0x710 [ 1710.081445][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.081445][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.081445][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.081445][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.081445][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.081445][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.081445][ T72] [ 1710.082962][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1710.082962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.082962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.082962][ T72] ipv6_find_idev+0x102/0x170 [ 1710.082962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.082962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.082962][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.082962][ T72] netlink_unicast+0x449/0x710 [ 1710.082962][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.082962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.082962][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.082962][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.082962][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.082962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.082962][ T72] [ 1710.085025][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1710.085285][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1710.085285][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.085285][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.085285][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.085285][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.085285][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.085285][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.085285][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.085285][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.085285][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.085285][ T72] netlink_unicast+0x449/0x710 [ 1710.085285][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.085285][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.085285][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.085285][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.085285][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.085285][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.085285][ T72] [ 1710.087240][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1710.087240][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.087240][ T72] ipv6_find_idev+0x102/0x170 [ 1710.087240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.087240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.087240][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.087240][ T72] netlink_unicast+0x449/0x710 [ 1710.087240][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.087240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.087240][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.087240][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.087240][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.087240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.087240][ T72] [ 1710.088744][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1710.088744][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.088744][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.088744][ T72] ipv6_find_idev+0x102/0x170 [ 1710.088744][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.088744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.088744][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.088744][ T72] netlink_unicast+0x449/0x710 [ 1710.088744][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.088744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.088744][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.088744][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.088744][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.088744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.088744][ T72] [ 1710.090443][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1710.090704][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1710.090704][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.090704][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.090704][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.090704][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.090704][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.090704][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.090704][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.090704][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.090704][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.090704][ T72] netlink_unicast+0x449/0x710 [ 1710.090704][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.090704][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.090704][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.090704][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.090704][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.090704][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.090704][ T72] [ 1710.092803][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1710.092803][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.092803][ T72] ipv6_find_idev+0x102/0x170 [ 1710.092803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.092803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.092803][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.092803][ T72] netlink_unicast+0x449/0x710 [ 1710.092803][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.092803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.092803][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.092803][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.092803][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.092803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.092803][ T72] [ 1710.094592][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1710.094592][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.094592][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.094592][ T72] ipv6_find_idev+0x102/0x170 [ 1710.094592][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.094592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.094592][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.094592][ T72] netlink_unicast+0x449/0x710 [ 1710.094592][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.094592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.094592][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.094592][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.094592][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.094592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.094592][ T72] [ 1710.096575][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1710.096907][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1710.096907][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.096907][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.096907][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.096907][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.096907][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.096907][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.096907][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.096907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.096907][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.096907][ T72] netlink_unicast+0x449/0x710 [ 1710.096907][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.096907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.096907][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.096907][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.096907][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.096907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.096907][ T72] [ 1710.099114][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1710.099114][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.099114][ T72] ipv6_find_idev+0x102/0x170 [ 1710.099114][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.099114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.099114][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.099114][ T72] netlink_unicast+0x449/0x710 [ 1710.099114][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.099114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.099114][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.099114][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.099114][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.099114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.099114][ T72] [ 1710.100903][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1710.100903][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.100903][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.100903][ T72] ipv6_find_idev+0x102/0x170 [ 1710.100903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.100903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.100903][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.100903][ T72] netlink_unicast+0x449/0x710 [ 1710.100903][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.100903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.100903][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.100903][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.100903][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.100903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.100903][ T72] [ 1710.102806][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1710.103092][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1710.103092][ T72] netdev_get_by_index+0x5e/0x80 [ 1710.103092][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1710.103092][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1710.103092][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1710.103092][ T72] ipv6_add_addr+0x411/0x2000 [ 1710.103092][ T72] inet6_addr_add+0x30e/0xa40 [ 1710.103092][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1710.103092][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.103092][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.103092][ T72] netlink_unicast+0x449/0x710 [ 1710.103092][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.103092][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.103092][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.103092][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.103092][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.103092][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.103092][ T72] [ 1710.105373][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1710.105373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1710.105373][ T72] ipv6_find_idev+0x102/0x170 [ 1710.105373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.105373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.105373][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.105373][ T72] netlink_unicast+0x449/0x710 [ 1710.105373][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.105373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.105373][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.105373][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.105373][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.105373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.105373][ T72] [ 1710.107151][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1710.107151][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1710.107151][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1710.107151][ T72] ipv6_find_idev+0x102/0x170 [ 1710.107151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1710.107151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1710.107151][ T72] netlink_rcv_skb+0x130/0x360 [ 1710.107151][ T72] netlink_unicast+0x449/0x710 [ 1710.107151][ T72] netlink_sendmsg+0x723/0xbe0 [ 1710.107151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1710.107151][ T72] ___sys_sendmsg+0xee/0x170 [ 1710.107151][ T72] __sys_sendmsg+0xcd/0x170 [ 1710.107151][ T72] do_syscall_64+0xc6/0x1e0 [ 1710.107151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1710.107151][ T72] [ 1720.358818][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1720.359258][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1720.359258][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.359258][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.359258][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.359258][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.359258][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.359258][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.359258][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.359258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.359258][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.359258][ T72] netlink_unicast+0x449/0x710 [ 1720.359258][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.359258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.359258][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.359258][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.359258][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.359258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.359258][ T72] [ 1720.361462][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1720.361462][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.361462][ T72] ipv6_find_idev+0x102/0x170 [ 1720.361462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.361462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.361462][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.361462][ T72] netlink_unicast+0x449/0x710 [ 1720.361462][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.361462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.361462][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.361462][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.361462][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.361462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.361462][ T72] [ 1720.363265][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1720.363265][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.363265][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.363265][ T72] ipv6_find_idev+0x102/0x170 [ 1720.363265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.363265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.363265][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.363265][ T72] netlink_unicast+0x449/0x710 [ 1720.363265][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.363265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.363265][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.363265][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.363265][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.363265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.363265][ T72] [ 1720.364992][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1720.365269][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1720.365269][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.365269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.365269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.365269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.365269][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.365269][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.365269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.365269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.365269][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.365269][ T72] netlink_unicast+0x449/0x710 [ 1720.365269][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.365269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.365269][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.365269][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.365269][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.365269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.365269][ T72] [ 1720.367289][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1720.367289][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.367289][ T72] ipv6_find_idev+0x102/0x170 [ 1720.367289][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.367289][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.367289][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.367289][ T72] netlink_unicast+0x449/0x710 [ 1720.367289][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.367289][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.367289][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.367289][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.367289][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.367289][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.367289][ T72] [ 1720.368822][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1720.368822][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.368822][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.368822][ T72] ipv6_find_idev+0x102/0x170 [ 1720.368822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.368822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.368822][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.368822][ T72] netlink_unicast+0x449/0x710 [ 1720.368822][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.368822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.368822][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.368822][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.368822][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.368822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.368822][ T72] [ 1720.370515][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1720.370781][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1720.370781][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.370781][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.370781][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.370781][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.370781][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.370781][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.370781][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.370781][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.370781][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.370781][ T72] netlink_unicast+0x449/0x710 [ 1720.370781][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.370781][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.370781][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.370781][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.370781][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.370781][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.370781][ T72] [ 1720.372770][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1720.372770][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.372770][ T72] ipv6_find_idev+0x102/0x170 [ 1720.372770][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.372770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.372770][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.372770][ T72] netlink_unicast+0x449/0x710 [ 1720.372770][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.372770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.372770][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.372770][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.372770][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.372770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.372770][ T72] [ 1720.374313][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1720.374313][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.374313][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.374313][ T72] ipv6_find_idev+0x102/0x170 [ 1720.374313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.374313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.374313][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.374313][ T72] netlink_unicast+0x449/0x710 [ 1720.374313][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.374313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.374313][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.374313][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.374313][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.374313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.374313][ T72] [ 1720.376007][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1720.376270][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1720.376270][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.376270][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.376270][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.376270][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.376270][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.376270][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.376270][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.376270][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.376270][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.376270][ T72] netlink_unicast+0x449/0x710 [ 1720.376270][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.376270][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.376270][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.376270][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.376270][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.376270][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.376270][ T72] [ 1720.378281][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1720.378281][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.378281][ T72] ipv6_find_idev+0x102/0x170 [ 1720.378281][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.378281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.378281][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.378281][ T72] netlink_unicast+0x449/0x710 [ 1720.378281][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.378281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.378281][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.378281][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.378281][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.378281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.378281][ T72] [ 1720.379812][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1720.379812][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.379812][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.379812][ T72] ipv6_find_idev+0x102/0x170 [ 1720.379812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.379812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.379812][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.379812][ T72] netlink_unicast+0x449/0x710 [ 1720.379812][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.379812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.379812][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.379812][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.379812][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.379812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.379812][ T72] [ 1720.381917][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1720.382535][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1720.382535][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.382535][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.382535][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.382535][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.382535][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.382535][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.382535][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.382535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.382535][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.382535][ T72] netlink_unicast+0x449/0x710 [ 1720.382535][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.382535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.382535][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.382535][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.382535][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.382535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.382535][ T72] [ 1720.384723][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1720.384723][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.384723][ T72] ipv6_find_idev+0x102/0x170 [ 1720.384723][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.384723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.384723][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.384723][ T72] netlink_unicast+0x449/0x710 [ 1720.384723][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.384723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.384723][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.384723][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.384723][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.384723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.384723][ T72] [ 1720.386925][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1720.386925][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.386925][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.386925][ T72] ipv6_find_idev+0x102/0x170 [ 1720.386925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.386925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.386925][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.386925][ T72] netlink_unicast+0x449/0x710 [ 1720.386925][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.386925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.386925][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.386925][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.386925][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.386925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.386925][ T72] [ 1720.388771][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1720.389076][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1720.389076][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.389076][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.389076][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.389076][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.389076][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.389076][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.389076][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.389076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.389076][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.389076][ T72] netlink_unicast+0x449/0x710 [ 1720.389076][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.389076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.389076][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.389076][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.389076][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.389076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.389076][ T72] [ 1720.391283][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1720.391283][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.391283][ T72] ipv6_find_idev+0x102/0x170 [ 1720.391283][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.391283][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.391283][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.391283][ T72] netlink_unicast+0x449/0x710 [ 1720.391283][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.391283][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.391283][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.391283][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.391283][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.391283][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.391283][ T72] [ 1720.393481][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1720.393481][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.393481][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.393481][ T72] ipv6_find_idev+0x102/0x170 [ 1720.393481][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.393481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.393481][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.393481][ T72] netlink_unicast+0x449/0x710 [ 1720.393481][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.393481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.393481][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.393481][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.393481][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.393481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.393481][ T72] [ 1720.395533][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1720.395858][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1720.395858][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.395858][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.395858][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.395858][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.395858][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.395858][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.395858][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.395858][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.395858][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.395858][ T72] netlink_unicast+0x449/0x710 [ 1720.395858][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.395858][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.395858][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.395858][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.395858][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.395858][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.395858][ T72] [ 1720.398095][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1720.398095][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.398095][ T72] ipv6_find_idev+0x102/0x170 [ 1720.398095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.398095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.398095][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.398095][ T72] netlink_unicast+0x449/0x710 [ 1720.398095][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.398095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.398095][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.398095][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.398095][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.398095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.398095][ T72] [ 1720.399828][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1720.399828][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.399828][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.399828][ T72] ipv6_find_idev+0x102/0x170 [ 1720.399828][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.399828][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.399828][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.399828][ T72] netlink_unicast+0x449/0x710 [ 1720.399828][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.399828][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.399828][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.399828][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.399828][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.399828][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.399828][ T72] [ 1720.401897][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1720.402238][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1720.402238][ T72] netdev_get_by_index+0x5e/0x80 [ 1720.402238][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1720.402238][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1720.402238][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1720.402238][ T72] ipv6_add_addr+0x411/0x2000 [ 1720.402238][ T72] inet6_addr_add+0x30e/0xa40 [ 1720.402238][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1720.402238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.402238][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.402238][ T72] netlink_unicast+0x449/0x710 [ 1720.402238][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.402238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.402238][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.402238][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.402238][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.402238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.402238][ T72] [ 1720.404622][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1720.404622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1720.404622][ T72] ipv6_find_idev+0x102/0x170 [ 1720.404622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.404622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.404622][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.404622][ T72] netlink_unicast+0x449/0x710 [ 1720.404622][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.404622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.404622][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.404622][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.404622][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.404622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.404622][ T72] [ 1720.406486][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1720.406486][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1720.406486][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1720.406486][ T72] ipv6_find_idev+0x102/0x170 [ 1720.406486][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1720.406486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1720.406486][ T72] netlink_rcv_skb+0x130/0x360 [ 1720.406486][ T72] netlink_unicast+0x449/0x710 [ 1720.406486][ T72] netlink_sendmsg+0x723/0xbe0 [ 1720.406486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1720.406486][ T72] ___sys_sendmsg+0xee/0x170 [ 1720.406486][ T72] __sys_sendmsg+0xcd/0x170 [ 1720.406486][ T72] do_syscall_64+0xc6/0x1e0 [ 1720.406486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1720.406486][ T72] [ 1730.558888][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1730.559305][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1730.559305][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.559305][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.559305][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.559305][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.559305][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.559305][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.559305][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.559305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.559305][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.559305][ T72] netlink_unicast+0x449/0x710 [ 1730.559305][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.559305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.559305][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.559305][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.559305][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.559305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.559305][ T72] [ 1730.561551][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1730.561551][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.561551][ T72] ipv6_find_idev+0x102/0x170 [ 1730.561551][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.561551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.561551][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.561551][ T72] netlink_unicast+0x449/0x710 [ 1730.561551][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.561551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.561551][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.561551][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.561551][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.561551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.561551][ T72] [ 1730.563186][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1730.563186][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.563186][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.563186][ T72] ipv6_find_idev+0x102/0x170 [ 1730.563186][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.563186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.563186][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.563186][ T72] netlink_unicast+0x449/0x710 [ 1730.563186][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.563186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.563186][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.563186][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.563186][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.563186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.563186][ T72] [ 1730.564856][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1730.565122][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1730.565122][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.565122][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.565122][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.565122][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.565122][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.565122][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.565122][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.565122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.565122][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.565122][ T72] netlink_unicast+0x449/0x710 [ 1730.565122][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.565122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.565122][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.565122][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.565122][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.565122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.565122][ T72] [ 1730.567079][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1730.567079][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.567079][ T72] ipv6_find_idev+0x102/0x170 [ 1730.567079][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.567079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.567079][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.567079][ T72] netlink_unicast+0x449/0x710 [ 1730.567079][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.567079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.567079][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.567079][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.567079][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.567079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.567079][ T72] [ 1730.568604][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1730.568604][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.568604][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.568604][ T72] ipv6_find_idev+0x102/0x170 [ 1730.568604][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.568604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.568604][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.568604][ T72] netlink_unicast+0x449/0x710 [ 1730.568604][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.568604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.568604][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.568604][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.568604][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.568604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.568604][ T72] [ 1730.570263][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1730.570526][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1730.570526][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.570526][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.570526][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.570526][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.570526][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.570526][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.570526][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.570526][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.570526][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.570526][ T72] netlink_unicast+0x449/0x710 [ 1730.570526][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.570526][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.570526][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.570526][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.570526][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.570526][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.570526][ T72] [ 1730.572492][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1730.572492][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.572492][ T72] ipv6_find_idev+0x102/0x170 [ 1730.572492][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.572492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.572492][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.572492][ T72] netlink_unicast+0x449/0x710 [ 1730.572492][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.572492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.572492][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.572492][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.572492][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.572492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.572492][ T72] [ 1730.574007][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1730.574007][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.574007][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.574007][ T72] ipv6_find_idev+0x102/0x170 [ 1730.574007][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.574007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.574007][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.574007][ T72] netlink_unicast+0x449/0x710 [ 1730.574007][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.574007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.574007][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.574007][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.574007][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.574007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.574007][ T72] [ 1730.575674][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1730.576366][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1730.576366][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.576366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.576366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.576366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.576366][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.576366][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.576366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.576366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.576366][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.576366][ T72] netlink_unicast+0x449/0x710 [ 1730.576366][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.576366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.576366][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.576366][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.576366][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.576366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.576366][ T72] [ 1730.578317][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1730.578317][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.578317][ T72] ipv6_find_idev+0x102/0x170 [ 1730.578317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.578317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.578317][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.578317][ T72] netlink_unicast+0x449/0x710 [ 1730.578317][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.578317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.578317][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.578317][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.578317][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.578317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.578317][ T72] [ 1730.579820][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1730.579820][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.579820][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.579820][ T72] ipv6_find_idev+0x102/0x170 [ 1730.579820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.579820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.579820][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.579820][ T72] netlink_unicast+0x449/0x710 [ 1730.579820][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.579820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.579820][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.579820][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.579820][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.579820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.579820][ T72] [ 1730.581508][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1730.581774][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1730.581774][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.581774][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.581774][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.581774][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.581774][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.581774][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.581774][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.581774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.581774][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.581774][ T72] netlink_unicast+0x449/0x710 [ 1730.581774][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.581774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.581774][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.581774][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.581774][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.581774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.581774][ T72] [ 1730.583737][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1730.583737][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.583737][ T72] ipv6_find_idev+0x102/0x170 [ 1730.583737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.583737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.583737][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.583737][ T72] netlink_unicast+0x449/0x710 [ 1730.583737][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.583737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.583737][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.583737][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.583737][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.583737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.583737][ T72] [ 1730.585245][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1730.585245][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.585245][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.585245][ T72] ipv6_find_idev+0x102/0x170 [ 1730.585245][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.585245][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.585245][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.585245][ T72] netlink_unicast+0x449/0x710 [ 1730.585245][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.585245][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.585245][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.585245][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.585245][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.585245][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.585245][ T72] [ 1730.586930][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1730.587189][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1730.587189][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.587189][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.587189][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.587189][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.587189][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.587189][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.587189][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.587189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.587189][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.587189][ T72] netlink_unicast+0x449/0x710 [ 1730.587189][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.587189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.587189][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.587189][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.587189][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.587189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.587189][ T72] [ 1730.589206][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1730.589206][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.589206][ T72] ipv6_find_idev+0x102/0x170 [ 1730.589206][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.589206][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.589206][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.589206][ T72] netlink_unicast+0x449/0x710 [ 1730.589206][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.589206][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.589206][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.589206][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.589206][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.589206][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.589206][ T72] [ 1730.590888][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1730.590888][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.590888][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.590888][ T72] ipv6_find_idev+0x102/0x170 [ 1730.590888][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.590888][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.590888][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.590888][ T72] netlink_unicast+0x449/0x710 [ 1730.590888][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.590888][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.590888][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.590888][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.590888][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.590888][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.590888][ T72] [ 1730.592816][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1730.593078][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1730.593078][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.593078][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.593078][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.593078][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.593078][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.593078][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.593078][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.593078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.593078][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.593078][ T72] netlink_unicast+0x449/0x710 [ 1730.593078][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.593078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.593078][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.593078][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.593078][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.593078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.593078][ T72] [ 1730.595269][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1730.595269][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.595269][ T72] ipv6_find_idev+0x102/0x170 [ 1730.595269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.595269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.595269][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.595269][ T72] netlink_unicast+0x449/0x710 [ 1730.595269][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.595269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.595269][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.595269][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.595269][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.595269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.595269][ T72] [ 1730.596952][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1730.596952][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.596952][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.596952][ T72] ipv6_find_idev+0x102/0x170 [ 1730.596952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.596952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.596952][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.596952][ T72] netlink_unicast+0x449/0x710 [ 1730.596952][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.596952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.596952][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.596952][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.596952][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.596952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.596952][ T72] [ 1730.598817][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1730.599085][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1730.599085][ T72] netdev_get_by_index+0x5e/0x80 [ 1730.599085][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1730.599085][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1730.599085][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1730.599085][ T72] ipv6_add_addr+0x411/0x2000 [ 1730.599085][ T72] inet6_addr_add+0x30e/0xa40 [ 1730.599085][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1730.599085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.599085][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.599085][ T72] netlink_unicast+0x449/0x710 [ 1730.599085][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.599085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.599085][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.599085][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.599085][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.599085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.599085][ T72] [ 1730.601294][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1730.601294][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1730.601294][ T72] ipv6_find_idev+0x102/0x170 [ 1730.601294][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.601294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.601294][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.601294][ T72] netlink_unicast+0x449/0x710 [ 1730.601294][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.601294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.601294][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.601294][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.601294][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.601294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.601294][ T72] [ 1730.602989][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1730.602989][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1730.602989][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1730.602989][ T72] ipv6_find_idev+0x102/0x170 [ 1730.602989][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1730.602989][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1730.602989][ T72] netlink_rcv_skb+0x130/0x360 [ 1730.602989][ T72] netlink_unicast+0x449/0x710 [ 1730.602989][ T72] netlink_sendmsg+0x723/0xbe0 [ 1730.602989][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1730.602989][ T72] ___sys_sendmsg+0xee/0x170 [ 1730.602989][ T72] __sys_sendmsg+0xcd/0x170 [ 1730.602989][ T72] do_syscall_64+0xc6/0x1e0 [ 1730.602989][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1730.602989][ T72] [ 1740.766862][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1740.767301][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1740.767301][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.767301][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.767301][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.767301][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.767301][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.767301][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.767301][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.767301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.767301][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.767301][ T72] netlink_unicast+0x449/0x710 [ 1740.767301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.767301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.767301][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.767301][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.767301][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.767301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.767301][ T72] [ 1740.769290][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1740.769290][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.769290][ T72] ipv6_find_idev+0x102/0x170 [ 1740.769290][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.769290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.769290][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.769290][ T72] netlink_unicast+0x449/0x710 [ 1740.769290][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.769290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.769290][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.769290][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.769290][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.769290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.769290][ T72] [ 1740.770806][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1740.770806][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.770806][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.770806][ T72] ipv6_find_idev+0x102/0x170 [ 1740.770806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.770806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.770806][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.770806][ T72] netlink_unicast+0x449/0x710 [ 1740.770806][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.770806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.770806][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.770806][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.770806][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.770806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.770806][ T72] [ 1740.772491][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1740.772766][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1740.772766][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.772766][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.772766][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.772766][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.772766][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.772766][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.772766][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.772766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.772766][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.772766][ T72] netlink_unicast+0x449/0x710 [ 1740.772766][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.772766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.772766][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.772766][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.772766][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.772766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.772766][ T72] [ 1740.774742][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1740.774742][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.774742][ T72] ipv6_find_idev+0x102/0x170 [ 1740.774742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.774742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.774742][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.774742][ T72] netlink_unicast+0x449/0x710 [ 1740.774742][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.774742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.774742][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.774742][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.774742][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.774742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.774742][ T72] [ 1740.776256][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1740.776256][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.776256][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.776256][ T72] ipv6_find_idev+0x102/0x170 [ 1740.776256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.776256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.776256][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.776256][ T72] netlink_unicast+0x449/0x710 [ 1740.776256][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.776256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.776256][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.776256][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.776256][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.776256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.776256][ T72] [ 1740.777926][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1740.778186][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1740.778186][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.778186][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.778186][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.778186][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.778186][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.778186][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.778186][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.778186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.778186][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.778186][ T72] netlink_unicast+0x449/0x710 [ 1740.778186][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.778186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.778186][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.778186][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.778186][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.778186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.778186][ T72] [ 1740.780182][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1740.780182][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.780182][ T72] ipv6_find_idev+0x102/0x170 [ 1740.780182][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.780182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.780182][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.780182][ T72] netlink_unicast+0x449/0x710 [ 1740.780182][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.780182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.780182][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.780182][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.780182][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.780182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.780182][ T72] [ 1740.781704][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1740.781704][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.781704][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.781704][ T72] ipv6_find_idev+0x102/0x170 [ 1740.781704][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.781704][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.781704][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.781704][ T72] netlink_unicast+0x449/0x710 [ 1740.781704][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.781704][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.781704][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.781704][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.781704][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.781704][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.781704][ T72] [ 1740.783397][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1740.783664][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1740.783664][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.783664][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.783664][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.783664][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.783664][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.783664][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.783664][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.783664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.783664][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.783664][ T72] netlink_unicast+0x449/0x710 [ 1740.783664][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.783664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.783664][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.783664][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.783664][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.783664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.783664][ T72] [ 1740.785642][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1740.785642][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.785642][ T72] ipv6_find_idev+0x102/0x170 [ 1740.785642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.785642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.785642][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.785642][ T72] netlink_unicast+0x449/0x710 [ 1740.785642][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.785642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.785642][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.785642][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.785642][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.785642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.785642][ T72] [ 1740.787159][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1740.787159][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.787159][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.787159][ T72] ipv6_find_idev+0x102/0x170 [ 1740.787159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.787159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.787159][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.787159][ T72] netlink_unicast+0x449/0x710 [ 1740.787159][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.787159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.787159][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.787159][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.787159][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.787159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.787159][ T72] [ 1740.788809][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1740.789071][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1740.789071][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.789071][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.789071][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.789071][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.789071][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.789071][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.789071][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.789071][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.789071][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.789071][ T72] netlink_unicast+0x449/0x710 [ 1740.789071][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.789071][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.789071][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.789071][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.789071][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.789071][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.789071][ T72] [ 1740.791022][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1740.791022][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.791022][ T72] ipv6_find_idev+0x102/0x170 [ 1740.791022][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.791022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.791022][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.791022][ T72] netlink_unicast+0x449/0x710 [ 1740.791022][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.791022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.791022][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.791022][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.791022][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.791022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.791022][ T72] [ 1740.792635][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1740.792635][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.792635][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.792635][ T72] ipv6_find_idev+0x102/0x170 [ 1740.792635][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.792635][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.792635][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.792635][ T72] netlink_unicast+0x449/0x710 [ 1740.792635][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.792635][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.792635][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.792635][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.792635][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.792635][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.792635][ T72] [ 1740.794607][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1740.794926][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1740.794926][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.794926][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.794926][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.794926][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.794926][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.794926][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.794926][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.794926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.794926][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.794926][ T72] netlink_unicast+0x449/0x710 [ 1740.794926][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.794926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.794926][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.794926][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.794926][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.794926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.794926][ T72] [ 1740.797061][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1740.797061][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.797061][ T72] ipv6_find_idev+0x102/0x170 [ 1740.797061][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.797061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.797061][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.797061][ T72] netlink_unicast+0x449/0x710 [ 1740.797061][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.797061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.797061][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.797061][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.797061][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.797061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.797061][ T72] [ 1740.798754][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1740.798754][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.798754][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.798754][ T72] ipv6_find_idev+0x102/0x170 [ 1740.798754][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.798754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.798754][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.798754][ T72] netlink_unicast+0x449/0x710 [ 1740.798754][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.798754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.798754][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.798754][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.798754][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.798754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.798754][ T72] [ 1740.800688][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1740.801003][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1740.801003][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.801003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.801003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.801003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.801003][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.801003][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.801003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.801003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.801003][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.801003][ T72] netlink_unicast+0x449/0x710 [ 1740.801003][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.801003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.801003][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.801003][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.801003][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.801003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.801003][ T72] [ 1740.803155][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1740.803155][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.803155][ T72] ipv6_find_idev+0x102/0x170 [ 1740.803155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.803155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.803155][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.803155][ T72] netlink_unicast+0x449/0x710 [ 1740.803155][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.803155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.803155][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.803155][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.803155][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.803155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.803155][ T72] [ 1740.804867][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1740.804867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.804867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.804867][ T72] ipv6_find_idev+0x102/0x170 [ 1740.804867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.804867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.804867][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.804867][ T72] netlink_unicast+0x449/0x710 [ 1740.804867][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.804867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.804867][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.804867][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.804867][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.804867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.804867][ T72] [ 1740.806764][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1740.807033][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1740.807033][ T72] netdev_get_by_index+0x5e/0x80 [ 1740.807033][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1740.807033][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1740.807033][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1740.807033][ T72] ipv6_add_addr+0x411/0x2000 [ 1740.807033][ T72] inet6_addr_add+0x30e/0xa40 [ 1740.807033][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1740.807033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.807033][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.807033][ T72] netlink_unicast+0x449/0x710 [ 1740.807033][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.807033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.807033][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.807033][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.807033][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.807033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.807033][ T72] [ 1740.809244][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1740.809244][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1740.809244][ T72] ipv6_find_idev+0x102/0x170 [ 1740.809244][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.809244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.809244][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.809244][ T72] netlink_unicast+0x449/0x710 [ 1740.809244][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.809244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.809244][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.809244][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.809244][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.809244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.809244][ T72] [ 1740.810998][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1740.810998][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1740.810998][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1740.810998][ T72] ipv6_find_idev+0x102/0x170 [ 1740.810998][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1740.810998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1740.810998][ T72] netlink_rcv_skb+0x130/0x360 [ 1740.810998][ T72] netlink_unicast+0x449/0x710 [ 1740.810998][ T72] netlink_sendmsg+0x723/0xbe0 [ 1740.810998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1740.810998][ T72] ___sys_sendmsg+0xee/0x170 [ 1740.810998][ T72] __sys_sendmsg+0xcd/0x170 [ 1740.810998][ T72] do_syscall_64+0xc6/0x1e0 [ 1740.810998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1740.810998][ T72] [ 1751.054857][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1751.055298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1751.055298][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.055298][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.055298][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.055298][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.055298][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.055298][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.055298][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.055298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.055298][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.055298][ T72] netlink_unicast+0x449/0x710 [ 1751.055298][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.055298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.055298][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.055298][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.055298][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.055298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.055298][ T72] [ 1751.057866][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1751.057866][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.057866][ T72] ipv6_find_idev+0x102/0x170 [ 1751.057866][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.057866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.057866][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.057866][ T72] netlink_unicast+0x449/0x710 [ 1751.057866][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.057866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.057866][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.057866][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.057866][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.057866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.057866][ T72] [ 1751.059378][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1751.059378][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.059378][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.059378][ T72] ipv6_find_idev+0x102/0x170 [ 1751.059378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.059378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.059378][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.059378][ T72] netlink_unicast+0x449/0x710 [ 1751.059378][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.059378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.059378][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.059378][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.059378][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.059378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.059378][ T72] [ 1751.061081][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1751.061364][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1751.061364][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.061364][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.061364][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.061364][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.061364][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.061364][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.061364][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.061364][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.061364][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.061364][ T72] netlink_unicast+0x449/0x710 [ 1751.061364][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.061364][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.061364][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.061364][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.061364][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.061364][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.061364][ T72] [ 1751.063347][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1751.063347][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.063347][ T72] ipv6_find_idev+0x102/0x170 [ 1751.063347][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.063347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.063347][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.063347][ T72] netlink_unicast+0x449/0x710 [ 1751.063347][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.063347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.063347][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.063347][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.063347][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.063347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.063347][ T72] [ 1751.064860][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1751.064860][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.064860][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.064860][ T72] ipv6_find_idev+0x102/0x170 [ 1751.064860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.064860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.064860][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.064860][ T72] netlink_unicast+0x449/0x710 [ 1751.064860][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.064860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.064860][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.064860][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.064860][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.064860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.064860][ T72] [ 1751.066513][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1751.066773][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1751.066773][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.066773][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.066773][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.066773][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.066773][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.066773][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.066773][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.066773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.066773][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.066773][ T72] netlink_unicast+0x449/0x710 [ 1751.066773][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.066773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.066773][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.066773][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.066773][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.066773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.066773][ T72] [ 1751.068748][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1751.068748][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.068748][ T72] ipv6_find_idev+0x102/0x170 [ 1751.068748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.068748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.068748][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.068748][ T72] netlink_unicast+0x449/0x710 [ 1751.068748][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.068748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.068748][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.068748][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.068748][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.068748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.068748][ T72] [ 1751.070257][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1751.070257][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.070257][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.070257][ T72] ipv6_find_idev+0x102/0x170 [ 1751.070257][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.070257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.070257][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.070257][ T72] netlink_unicast+0x449/0x710 [ 1751.070257][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.070257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.070257][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.070257][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.070257][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.070257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.070257][ T72] [ 1751.071904][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1751.072163][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1751.072163][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.072163][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.072163][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.072163][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.072163][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.072163][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.072163][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.072163][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.072163][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.072163][ T72] netlink_unicast+0x449/0x710 [ 1751.072163][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.072163][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.072163][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.072163][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.072163][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.072163][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.072163][ T72] [ 1751.074137][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1751.074137][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.074137][ T72] ipv6_find_idev+0x102/0x170 [ 1751.074137][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.074137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.074137][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.074137][ T72] netlink_unicast+0x449/0x710 [ 1751.074137][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.074137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.074137][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.074137][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.074137][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.074137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.074137][ T72] [ 1751.076053][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1751.076053][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.076053][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.076053][ T72] ipv6_find_idev+0x102/0x170 [ 1751.076053][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.076053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.076053][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.076053][ T72] netlink_unicast+0x449/0x710 [ 1751.076053][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.076053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.076053][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.076053][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.076053][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.076053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.076053][ T72] [ 1751.077700][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1751.078025][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1751.078025][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.078025][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.078025][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.078025][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.078025][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.078025][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.078025][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.078025][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.078025][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.078025][ T72] netlink_unicast+0x449/0x710 [ 1751.078025][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.078025][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.078025][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.078025][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.078025][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.078025][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.078025][ T72] [ 1751.079974][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1751.079974][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.079974][ T72] ipv6_find_idev+0x102/0x170 [ 1751.079974][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.079974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.079974][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.079974][ T72] netlink_unicast+0x449/0x710 [ 1751.079974][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.079974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.079974][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.079974][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.079974][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.079974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.079974][ T72] [ 1751.081482][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1751.081482][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.081482][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.081482][ T72] ipv6_find_idev+0x102/0x170 [ 1751.081482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.081482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.081482][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.081482][ T72] netlink_unicast+0x449/0x710 [ 1751.081482][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.081482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.081482][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.081482][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.081482][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.081482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.081482][ T72] [ 1751.083440][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1751.083706][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1751.083706][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.083706][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.083706][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.083706][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.083706][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.083706][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.083706][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.083706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.083706][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.083706][ T72] netlink_unicast+0x449/0x710 [ 1751.083706][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.083706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.083706][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.083706][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.083706][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.083706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.083706][ T72] [ 1751.085837][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1751.085837][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.085837][ T72] ipv6_find_idev+0x102/0x170 [ 1751.085837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.085837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.085837][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.085837][ T72] netlink_unicast+0x449/0x710 [ 1751.085837][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.085837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.085837][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.085837][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.085837][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.085837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.085837][ T72] [ 1751.087530][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1751.087530][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.087530][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.087530][ T72] ipv6_find_idev+0x102/0x170 [ 1751.087530][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.087530][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.087530][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.087530][ T72] netlink_unicast+0x449/0x710 [ 1751.087530][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.087530][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.087530][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.087530][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.087530][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.087530][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.087530][ T72] [ 1751.089464][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1751.089725][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1751.089725][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.089725][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.089725][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.089725][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.089725][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.089725][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.089725][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.089725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.089725][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.089725][ T72] netlink_unicast+0x449/0x710 [ 1751.089725][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.089725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.089725][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.089725][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.089725][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.089725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.089725][ T72] [ 1751.091917][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1751.091917][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.091917][ T72] ipv6_find_idev+0x102/0x170 [ 1751.091917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.091917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.091917][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.091917][ T72] netlink_unicast+0x449/0x710 [ 1751.091917][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.091917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.091917][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.091917][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.091917][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.091917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.091917][ T72] [ 1751.093612][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1751.093612][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.093612][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.093612][ T72] ipv6_find_idev+0x102/0x170 [ 1751.093612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.093612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.093612][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.093612][ T72] netlink_unicast+0x449/0x710 [ 1751.093612][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.093612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.093612][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.093612][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.093612][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.093612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.093612][ T72] [ 1751.095471][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1751.095736][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1751.095736][ T72] netdev_get_by_index+0x5e/0x80 [ 1751.095736][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1751.095736][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1751.095736][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1751.095736][ T72] ipv6_add_addr+0x411/0x2000 [ 1751.095736][ T72] inet6_addr_add+0x30e/0xa40 [ 1751.095736][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1751.095736][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.095736][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.095736][ T72] netlink_unicast+0x449/0x710 [ 1751.095736][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.095736][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.095736][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.095736][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.095736][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.095736][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.095736][ T72] [ 1751.098001][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1751.098001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1751.098001][ T72] ipv6_find_idev+0x102/0x170 [ 1751.098001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.098001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.098001][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.098001][ T72] netlink_unicast+0x449/0x710 [ 1751.098001][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.098001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.098001][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.098001][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.098001][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.098001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.098001][ T72] [ 1751.100046][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1751.100046][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1751.100046][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1751.100046][ T72] ipv6_find_idev+0x102/0x170 [ 1751.100046][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1751.100046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1751.100046][ T72] netlink_rcv_skb+0x130/0x360 [ 1751.100046][ T72] netlink_unicast+0x449/0x710 [ 1751.100046][ T72] netlink_sendmsg+0x723/0xbe0 [ 1751.100046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1751.100046][ T72] ___sys_sendmsg+0xee/0x170 [ 1751.100046][ T72] __sys_sendmsg+0xcd/0x170 [ 1751.100046][ T72] do_syscall_64+0xc6/0x1e0 [ 1751.100046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1751.100046][ T72] [ 1761.342776][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1761.343159][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1761.343159][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.343159][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.343159][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.343159][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.343159][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.343159][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.343159][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.343159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.343159][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.343159][ T72] netlink_unicast+0x449/0x710 [ 1761.343159][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.343159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.343159][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.343159][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.343159][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.343159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.343159][ T72] [ 1761.345155][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1761.345155][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.345155][ T72] ipv6_find_idev+0x102/0x170 [ 1761.345155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.345155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.345155][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.345155][ T72] netlink_unicast+0x449/0x710 [ 1761.345155][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.345155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.345155][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.345155][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.345155][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.345155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.345155][ T72] [ 1761.346692][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1761.346692][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.346692][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.346692][ T72] ipv6_find_idev+0x102/0x170 [ 1761.346692][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.346692][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.346692][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.346692][ T72] netlink_unicast+0x449/0x710 [ 1761.346692][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.346692][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.346692][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.346692][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.346692][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.346692][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.346692][ T72] [ 1761.348349][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1761.348612][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1761.348612][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.348612][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.348612][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.348612][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.348612][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.348612][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.348612][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.348612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.348612][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.348612][ T72] netlink_unicast+0x449/0x710 [ 1761.348612][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.348612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.348612][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.348612][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.348612][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.348612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.348612][ T72] [ 1761.350574][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1761.350574][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.350574][ T72] ipv6_find_idev+0x102/0x170 [ 1761.350574][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.350574][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.350574][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.350574][ T72] netlink_unicast+0x449/0x710 [ 1761.350574][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.350574][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.350574][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.350574][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.350574][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.350574][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.350574][ T72] [ 1761.352088][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1761.352088][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.352088][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.352088][ T72] ipv6_find_idev+0x102/0x170 [ 1761.352088][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.352088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.352088][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.352088][ T72] netlink_unicast+0x449/0x710 [ 1761.352088][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.352088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.352088][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.352088][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.352088][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.352088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.352088][ T72] [ 1761.354126][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1761.354392][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1761.354392][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.354392][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.354392][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.354392][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.354392][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.354392][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.354392][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.354392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.354392][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.354392][ T72] netlink_unicast+0x449/0x710 [ 1761.354392][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.354392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.354392][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.354392][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.354392][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.354392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.354392][ T72] [ 1761.356358][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1761.356358][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.356358][ T72] ipv6_find_idev+0x102/0x170 [ 1761.356358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.356358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.356358][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.356358][ T72] netlink_unicast+0x449/0x710 [ 1761.356358][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.356358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.356358][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.356358][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.356358][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.356358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.356358][ T72] [ 1761.357868][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1761.357868][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.357868][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.357868][ T72] ipv6_find_idev+0x102/0x170 [ 1761.357868][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.357868][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.357868][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.357868][ T72] netlink_unicast+0x449/0x710 [ 1761.357868][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.357868][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.357868][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.357868][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.357868][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.357868][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.357868][ T72] [ 1761.359518][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1761.359786][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1761.359786][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.359786][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.359786][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.359786][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.359786][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.359786][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.359786][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.359786][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.359786][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.359786][ T72] netlink_unicast+0x449/0x710 [ 1761.359786][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.359786][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.359786][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.359786][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.359786][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.359786][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.359786][ T72] [ 1761.361747][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1761.361747][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.361747][ T72] ipv6_find_idev+0x102/0x170 [ 1761.361747][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.361747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.361747][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.361747][ T72] netlink_unicast+0x449/0x710 [ 1761.361747][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.361747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.361747][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.361747][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.361747][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.361747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.361747][ T72] [ 1761.363263][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1761.363263][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.363263][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.363263][ T72] ipv6_find_idev+0x102/0x170 [ 1761.363263][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.363263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.363263][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.363263][ T72] netlink_unicast+0x449/0x710 [ 1761.363263][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.363263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.363263][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.363263][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.363263][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.363263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.363263][ T72] [ 1761.365309][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1761.365567][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1761.365567][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.365567][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.365567][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.365567][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.365567][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.365567][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.365567][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.365567][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.365567][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.365567][ T72] netlink_unicast+0x449/0x710 [ 1761.365567][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.365567][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.365567][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.365567][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.365567][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.365567][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.365567][ T72] [ 1761.367536][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1761.367536][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.367536][ T72] ipv6_find_idev+0x102/0x170 [ 1761.367536][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.367536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.367536][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.367536][ T72] netlink_unicast+0x449/0x710 [ 1761.367536][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.367536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.367536][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.367536][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.367536][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.367536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.367536][ T72] [ 1761.369039][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1761.369039][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.369039][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.369039][ T72] ipv6_find_idev+0x102/0x170 [ 1761.369039][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.369039][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.369039][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.369039][ T72] netlink_unicast+0x449/0x710 [ 1761.369039][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.369039][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.369039][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.369039][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.369039][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.369039][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.369039][ T72] [ 1761.370815][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1761.371083][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1761.371083][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.371083][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.371083][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.371083][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.371083][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.371083][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.371083][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.371083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.371083][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.371083][ T72] netlink_unicast+0x449/0x710 [ 1761.371083][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.371083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.371083][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.371083][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.371083][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.371083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.371083][ T72] [ 1761.373168][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1761.373168][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.373168][ T72] ipv6_find_idev+0x102/0x170 [ 1761.373168][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.373168][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.373168][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.373168][ T72] netlink_unicast+0x449/0x710 [ 1761.373168][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.373168][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.373168][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.373168][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.373168][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.373168][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.373168][ T72] [ 1761.375221][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1761.375221][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.375221][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.375221][ T72] ipv6_find_idev+0x102/0x170 [ 1761.375221][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.375221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.375221][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.375221][ T72] netlink_unicast+0x449/0x710 [ 1761.375221][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.375221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.375221][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.375221][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.375221][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.375221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.375221][ T72] [ 1761.377081][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1761.377345][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1761.377345][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.377345][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.377345][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.377345][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.377345][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.377345][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.377345][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.377345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.377345][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.377345][ T72] netlink_unicast+0x449/0x710 [ 1761.377345][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.377345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.377345][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.377345][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.377345][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.377345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.377345][ T72] [ 1761.379598][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1761.379598][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.379598][ T72] ipv6_find_idev+0x102/0x170 [ 1761.379598][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.379598][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.379598][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.379598][ T72] netlink_unicast+0x449/0x710 [ 1761.379598][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.379598][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.379598][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.379598][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.379598][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.379598][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.379598][ T72] [ 1761.381284][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1761.381284][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.381284][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.381284][ T72] ipv6_find_idev+0x102/0x170 [ 1761.381284][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.381284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.381284][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.381284][ T72] netlink_unicast+0x449/0x710 [ 1761.381284][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.381284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.381284][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.381284][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.381284][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.381284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.381284][ T72] [ 1761.383148][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1761.383437][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1761.383437][ T72] netdev_get_by_index+0x5e/0x80 [ 1761.383437][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1761.383437][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1761.383437][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1761.383437][ T72] ipv6_add_addr+0x411/0x2000 [ 1761.383437][ T72] inet6_addr_add+0x30e/0xa40 [ 1761.383437][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1761.383437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.383437][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.383437][ T72] netlink_unicast+0x449/0x710 [ 1761.383437][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.383437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.383437][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.383437][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.383437][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.383437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.383437][ T72] [ 1761.385628][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1761.385628][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1761.385628][ T72] ipv6_find_idev+0x102/0x170 [ 1761.385628][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.385628][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.385628][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.385628][ T72] netlink_unicast+0x449/0x710 [ 1761.385628][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.385628][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.385628][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.385628][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.385628][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.385628][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.385628][ T72] [ 1761.387322][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1761.387322][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1761.387322][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1761.387322][ T72] ipv6_find_idev+0x102/0x170 [ 1761.387322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1761.387322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1761.387322][ T72] netlink_rcv_skb+0x130/0x360 [ 1761.387322][ T72] netlink_unicast+0x449/0x710 [ 1761.387322][ T72] netlink_sendmsg+0x723/0xbe0 [ 1761.387322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1761.387322][ T72] ___sys_sendmsg+0xee/0x170 [ 1761.387322][ T72] __sys_sendmsg+0xcd/0x170 [ 1761.387322][ T72] do_syscall_64+0xc6/0x1e0 [ 1761.387322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1761.387322][ T72] [ 1771.630883][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1771.631365][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1771.631365][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.631365][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.631365][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.631365][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.631365][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.631365][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.631365][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.631365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.631365][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.631365][ T72] netlink_unicast+0x449/0x710 [ 1771.631365][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.631365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.631365][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.631365][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.631365][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.631365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.631365][ T72] [ 1771.633368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1771.633368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.633368][ T72] ipv6_find_idev+0x102/0x170 [ 1771.633368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.633368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.633368][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.633368][ T72] netlink_unicast+0x449/0x710 [ 1771.633368][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.633368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.633368][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.633368][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.633368][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.633368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.633368][ T72] [ 1771.634892][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1771.634892][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.634892][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.634892][ T72] ipv6_find_idev+0x102/0x170 [ 1771.634892][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.634892][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.634892][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.634892][ T72] netlink_unicast+0x449/0x710 [ 1771.634892][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.634892][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.634892][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.634892][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.634892][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.634892][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.634892][ T72] [ 1771.636556][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1771.636831][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1771.636831][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.636831][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.636831][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.636831][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.636831][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.636831][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.636831][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.636831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.636831][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.636831][ T72] netlink_unicast+0x449/0x710 [ 1771.636831][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.636831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.636831][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.636831][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.636831][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.636831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.636831][ T72] [ 1771.638795][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1771.638795][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.638795][ T72] ipv6_find_idev+0x102/0x170 [ 1771.638795][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.638795][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.638795][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.638795][ T72] netlink_unicast+0x449/0x710 [ 1771.638795][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.638795][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.638795][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.638795][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.638795][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.638795][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.638795][ T72] [ 1771.640304][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1771.640304][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.640304][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.640304][ T72] ipv6_find_idev+0x102/0x170 [ 1771.640304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.640304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.640304][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.640304][ T72] netlink_unicast+0x449/0x710 [ 1771.640304][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.640304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.640304][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.640304][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.640304][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.640304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.640304][ T72] [ 1771.641956][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1771.642219][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1771.642219][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.642219][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.642219][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.642219][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.642219][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.642219][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.642219][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.642219][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.642219][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.642219][ T72] netlink_unicast+0x449/0x710 [ 1771.642219][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.642219][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.642219][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.642219][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.642219][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.642219][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.642219][ T72] [ 1771.644195][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1771.644195][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.644195][ T72] ipv6_find_idev+0x102/0x170 [ 1771.644195][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.644195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.644195][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.644195][ T72] netlink_unicast+0x449/0x710 [ 1771.644195][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.644195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.644195][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.644195][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.644195][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.644195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.644195][ T72] [ 1771.645702][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1771.645702][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.645702][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.645702][ T72] ipv6_find_idev+0x102/0x170 [ 1771.645702][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.645702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.645702][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.645702][ T72] netlink_unicast+0x449/0x710 [ 1771.645702][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.645702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.645702][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.645702][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.645702][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.645702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.645702][ T72] [ 1771.647350][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1771.647609][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1771.647609][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.647609][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.647609][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.647609][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.647609][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.647609][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.647609][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.647609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.647609][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.647609][ T72] netlink_unicast+0x449/0x710 [ 1771.647609][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.647609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.647609][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.647609][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.647609][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.647609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.647609][ T72] [ 1771.649577][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1771.649577][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.649577][ T72] ipv6_find_idev+0x102/0x170 [ 1771.649577][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.649577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.649577][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.649577][ T72] netlink_unicast+0x449/0x710 [ 1771.649577][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.649577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.649577][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.649577][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.649577][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.649577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.649577][ T72] [ 1771.651100][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1771.651100][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.651100][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.651100][ T72] ipv6_find_idev+0x102/0x170 [ 1771.651100][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.651100][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.651100][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.651100][ T72] netlink_unicast+0x449/0x710 [ 1771.651100][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.651100][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.651100][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.651100][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.651100][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.651100][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.651100][ T72] [ 1771.653163][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1771.653422][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1771.653422][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.653422][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.653422][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.653422][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.653422][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.653422][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.653422][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.653422][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.653422][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.653422][ T72] netlink_unicast+0x449/0x710 [ 1771.653422][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.653422][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.653422][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.653422][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.653422][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.653422][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.653422][ T72] [ 1771.655375][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1771.655375][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.655375][ T72] ipv6_find_idev+0x102/0x170 [ 1771.655375][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.655375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.655375][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.655375][ T72] netlink_unicast+0x449/0x710 [ 1771.655375][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.655375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.655375][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.655375][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.655375][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.655375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.655375][ T72] [ 1771.656902][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1771.656902][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.656902][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.656902][ T72] ipv6_find_idev+0x102/0x170 [ 1771.656902][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.656902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.656902][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.656902][ T72] netlink_unicast+0x449/0x710 [ 1771.656902][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.656902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.656902][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.656902][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.656902][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.656902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.656902][ T72] [ 1771.658604][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1771.658923][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1771.658923][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.658923][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.658923][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.658923][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.658923][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.658923][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.658923][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.658923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.658923][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.658923][ T72] netlink_unicast+0x449/0x710 [ 1771.658923][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.658923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.658923][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.658923][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.658923][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.658923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.658923][ T72] [ 1771.660948][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1771.660948][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.660948][ T72] ipv6_find_idev+0x102/0x170 [ 1771.660948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.660948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.660948][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.660948][ T72] netlink_unicast+0x449/0x710 [ 1771.660948][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.660948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.660948][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.660948][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.660948][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.660948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.660948][ T72] [ 1771.662702][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1771.662702][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.662702][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.662702][ T72] ipv6_find_idev+0x102/0x170 [ 1771.662702][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.662702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.662702][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.662702][ T72] netlink_unicast+0x449/0x710 [ 1771.662702][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.662702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.662702][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.662702][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.662702][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.662702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.662702][ T72] [ 1771.664640][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1771.664955][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1771.664955][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.664955][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.664955][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.664955][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.664955][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.664955][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.664955][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.664955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.664955][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.664955][ T72] netlink_unicast+0x449/0x710 [ 1771.664955][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.664955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.664955][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.664955][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.664955][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.664955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.664955][ T72] [ 1771.667096][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1771.667096][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.667096][ T72] ipv6_find_idev+0x102/0x170 [ 1771.667096][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.667096][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.667096][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.667096][ T72] netlink_unicast+0x449/0x710 [ 1771.667096][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.667096][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.667096][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.667096][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.667096][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.667096][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.667096][ T72] [ 1771.668726][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1771.668726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.668726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.668726][ T72] ipv6_find_idev+0x102/0x170 [ 1771.668726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.668726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.668726][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.668726][ T72] netlink_unicast+0x449/0x710 [ 1771.668726][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.668726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.668726][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.668726][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.668726][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.668726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.668726][ T72] [ 1771.670646][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1771.670959][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1771.670959][ T72] netdev_get_by_index+0x5e/0x80 [ 1771.670959][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1771.670959][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1771.670959][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1771.670959][ T72] ipv6_add_addr+0x411/0x2000 [ 1771.670959][ T72] inet6_addr_add+0x30e/0xa40 [ 1771.670959][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1771.670959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.670959][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.670959][ T72] netlink_unicast+0x449/0x710 [ 1771.670959][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.670959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.670959][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.670959][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.670959][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.670959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.670959][ T72] [ 1771.673161][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1771.673161][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1771.673161][ T72] ipv6_find_idev+0x102/0x170 [ 1771.673161][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.673161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.673161][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.673161][ T72] netlink_unicast+0x449/0x710 [ 1771.673161][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.673161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.673161][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.673161][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.673161][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.673161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.673161][ T72] [ 1771.674849][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1771.674849][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1771.674849][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1771.674849][ T72] ipv6_find_idev+0x102/0x170 [ 1771.674849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1771.674849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1771.674849][ T72] netlink_rcv_skb+0x130/0x360 [ 1771.674849][ T72] netlink_unicast+0x449/0x710 [ 1771.674849][ T72] netlink_sendmsg+0x723/0xbe0 [ 1771.674849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1771.674849][ T72] ___sys_sendmsg+0xee/0x170 [ 1771.674849][ T72] __sys_sendmsg+0xcd/0x170 [ 1771.674849][ T72] do_syscall_64+0xc6/0x1e0 [ 1771.674849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1771.674849][ T72] [ 1781.918921][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1781.919385][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1781.919385][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.919385][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.919385][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.919385][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.919385][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.919385][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.919385][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.919385][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.919385][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.919385][ T72] netlink_unicast+0x449/0x710 [ 1781.919385][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.919385][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.919385][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.919385][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.919385][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.919385][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.919385][ T72] [ 1781.921609][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1781.921609][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.921609][ T72] ipv6_find_idev+0x102/0x170 [ 1781.921609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.921609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.921609][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.921609][ T72] netlink_unicast+0x449/0x710 [ 1781.921609][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.921609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.921609][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.921609][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.921609][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.921609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.921609][ T72] [ 1781.923348][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1781.923348][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.923348][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.923348][ T72] ipv6_find_idev+0x102/0x170 [ 1781.923348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.923348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.923348][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.923348][ T72] netlink_unicast+0x449/0x710 [ 1781.923348][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.923348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.923348][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.923348][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.923348][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.923348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.923348][ T72] [ 1781.925316][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1781.925664][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1781.925664][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.925664][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.925664][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.925664][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.925664][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.925664][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.925664][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.925664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.925664][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.925664][ T72] netlink_unicast+0x449/0x710 [ 1781.925664][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.925664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.925664][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.925664][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.925664][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.925664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.925664][ T72] [ 1781.927918][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1781.927918][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.927918][ T72] ipv6_find_idev+0x102/0x170 [ 1781.927918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.927918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.927918][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.927918][ T72] netlink_unicast+0x449/0x710 [ 1781.927918][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.927918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.927918][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.927918][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.927918][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.927918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.927918][ T72] [ 1781.929645][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1781.929645][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.929645][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.929645][ T72] ipv6_find_idev+0x102/0x170 [ 1781.929645][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.929645][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.929645][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.929645][ T72] netlink_unicast+0x449/0x710 [ 1781.929645][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.929645][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.929645][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.929645][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.929645][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.929645][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.929645][ T72] [ 1781.931556][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1781.931858][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1781.931858][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.931858][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.931858][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.931858][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.931858][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.931858][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.931858][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.931858][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.931858][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.931858][ T72] netlink_unicast+0x449/0x710 [ 1781.931858][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.931858][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.931858][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.931858][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.931858][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.931858][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.931858][ T72] [ 1781.933967][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1781.933967][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.933967][ T72] ipv6_find_idev+0x102/0x170 [ 1781.933967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.933967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.933967][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.933967][ T72] netlink_unicast+0x449/0x710 [ 1781.933967][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.933967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.933967][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.933967][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.933967][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.933967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.933967][ T72] [ 1781.935518][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1781.935518][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.935518][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.935518][ T72] ipv6_find_idev+0x102/0x170 [ 1781.935518][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.935518][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.935518][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.935518][ T72] netlink_unicast+0x449/0x710 [ 1781.935518][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.935518][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.935518][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.935518][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.935518][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.935518][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.935518][ T72] [ 1781.937269][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1781.937550][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1781.937550][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.937550][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.937550][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.937550][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.937550][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.937550][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.937550][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.937550][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.937550][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.937550][ T72] netlink_unicast+0x449/0x710 [ 1781.937550][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.937550][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.937550][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.937550][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.937550][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.937550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.937550][ T72] [ 1781.939625][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1781.939625][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.939625][ T72] ipv6_find_idev+0x102/0x170 [ 1781.939625][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.939625][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.939625][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.939625][ T72] netlink_unicast+0x449/0x710 [ 1781.939625][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.939625][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.939625][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.939625][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.939625][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.939625][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.939625][ T72] [ 1781.941164][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1781.941164][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.941164][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.941164][ T72] ipv6_find_idev+0x102/0x170 [ 1781.941164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.941164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.941164][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.941164][ T72] netlink_unicast+0x449/0x710 [ 1781.941164][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.941164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.941164][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.941164][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.941164][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.941164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.941164][ T72] [ 1781.943312][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1781.943582][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1781.943582][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.943582][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.943582][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.943582][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.943582][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.943582][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.943582][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.943582][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.943582][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.943582][ T72] netlink_unicast+0x449/0x710 [ 1781.943582][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.943582][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.943582][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.943582][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.943582][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.943582][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.943582][ T72] [ 1781.945649][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1781.945649][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.945649][ T72] ipv6_find_idev+0x102/0x170 [ 1781.945649][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.945649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.945649][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.945649][ T72] netlink_unicast+0x449/0x710 [ 1781.945649][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.945649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.945649][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.945649][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.945649][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.945649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.945649][ T72] [ 1781.947351][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1781.947351][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.947351][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.947351][ T72] ipv6_find_idev+0x102/0x170 [ 1781.947351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.947351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.947351][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.947351][ T72] netlink_unicast+0x449/0x710 [ 1781.947351][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.947351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.947351][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.947351][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.947351][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.947351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.947351][ T72] [ 1781.949281][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1781.949569][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1781.949569][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.949569][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.949569][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.949569][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.949569][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.949569][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.949569][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.949569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.949569][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.949569][ T72] netlink_unicast+0x449/0x710 [ 1781.949569][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.949569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.949569][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.949569][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.949569][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.949569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.949569][ T72] [ 1781.951874][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1781.951874][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.951874][ T72] ipv6_find_idev+0x102/0x170 [ 1781.951874][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.951874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.951874][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.951874][ T72] netlink_unicast+0x449/0x710 [ 1781.951874][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.951874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.951874][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.951874][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.951874][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.951874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.951874][ T72] [ 1781.953930][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1781.953930][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.953930][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.953930][ T72] ipv6_find_idev+0x102/0x170 [ 1781.953930][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.953930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.953930][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.953930][ T72] netlink_unicast+0x449/0x710 [ 1781.953930][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.953930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.953930][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.953930][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.953930][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.953930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.953930][ T72] [ 1781.956137][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1781.956432][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1781.956432][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.956432][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.956432][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.956432][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.956432][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.956432][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.956432][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.956432][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.956432][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.956432][ T72] netlink_unicast+0x449/0x710 [ 1781.956432][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.956432][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.956432][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.956432][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.956432][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.956432][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.956432][ T72] [ 1781.958921][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1781.958921][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.958921][ T72] ipv6_find_idev+0x102/0x170 [ 1781.958921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.958921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.958921][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.958921][ T72] netlink_unicast+0x449/0x710 [ 1781.958921][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.958921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.958921][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.958921][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.958921][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.958921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.958921][ T72] [ 1781.960867][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1781.960867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.960867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.960867][ T72] ipv6_find_idev+0x102/0x170 [ 1781.960867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.960867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.960867][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.960867][ T72] netlink_unicast+0x449/0x710 [ 1781.960867][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.960867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.960867][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.960867][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.960867][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.960867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.960867][ T72] [ 1781.962993][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1781.963286][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1781.963286][ T72] netdev_get_by_index+0x5e/0x80 [ 1781.963286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1781.963286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1781.963286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1781.963286][ T72] ipv6_add_addr+0x411/0x2000 [ 1781.963286][ T72] inet6_addr_add+0x30e/0xa40 [ 1781.963286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1781.963286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.963286][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.963286][ T72] netlink_unicast+0x449/0x710 [ 1781.963286][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.963286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.963286][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.963286][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.963286][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.963286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.963286][ T72] [ 1781.965587][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1781.965587][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1781.965587][ T72] ipv6_find_idev+0x102/0x170 [ 1781.965587][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.965587][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.965587][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.965587][ T72] netlink_unicast+0x449/0x710 [ 1781.965587][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.965587][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.965587][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.965587][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.965587][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.965587][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.965587][ T72] [ 1781.967316][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1781.967316][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1781.967316][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1781.967316][ T72] ipv6_find_idev+0x102/0x170 [ 1781.967316][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1781.967316][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1781.967316][ T72] netlink_rcv_skb+0x130/0x360 [ 1781.967316][ T72] netlink_unicast+0x449/0x710 [ 1781.967316][ T72] netlink_sendmsg+0x723/0xbe0 [ 1781.967316][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1781.967316][ T72] ___sys_sendmsg+0xee/0x170 [ 1781.967316][ T72] __sys_sendmsg+0xcd/0x170 [ 1781.967316][ T72] do_syscall_64+0xc6/0x1e0 [ 1781.967316][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1781.967316][ T72] [ 1792.206911][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1792.207535][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1792.207535][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.207535][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.207535][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.207535][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.207535][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.207535][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.207535][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.207535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.207535][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.207535][ T72] netlink_unicast+0x449/0x710 [ 1792.207535][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.207535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.207535][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.207535][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.207535][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.207535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.207535][ T72] [ 1792.210395][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1792.210395][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.210395][ T72] ipv6_find_idev+0x102/0x170 [ 1792.210395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.210395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.210395][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.210395][ T72] netlink_unicast+0x449/0x710 [ 1792.210395][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.210395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.210395][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.210395][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.210395][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.210395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.210395][ T72] [ 1792.212635][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1792.212635][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.212635][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.212635][ T72] ipv6_find_idev+0x102/0x170 [ 1792.212635][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.212635][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.212635][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.212635][ T72] netlink_unicast+0x449/0x710 [ 1792.212635][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.212635][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.212635][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.212635][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.212635][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.212635][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.212635][ T72] [ 1792.215193][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1792.215682][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1792.215682][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.215682][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.215682][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.215682][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.215682][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.215682][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.215682][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.215682][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.215682][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.215682][ T72] netlink_unicast+0x449/0x710 [ 1792.215682][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.215682][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.215682][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.215682][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.215682][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.215682][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.215682][ T72] [ 1792.218983][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1792.218983][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.218983][ T72] ipv6_find_idev+0x102/0x170 [ 1792.218983][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.218983][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.218983][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.218983][ T72] netlink_unicast+0x449/0x710 [ 1792.218983][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.218983][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.218983][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.218983][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.218983][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.218983][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.218983][ T72] [ 1792.221293][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1792.221293][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.221293][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.221293][ T72] ipv6_find_idev+0x102/0x170 [ 1792.221293][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.221293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.221293][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.221293][ T72] netlink_unicast+0x449/0x710 [ 1792.221293][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.221293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.221293][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.221293][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.221293][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.221293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.221293][ T72] [ 1792.223755][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1792.224173][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1792.224173][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.224173][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.224173][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.224173][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.224173][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.224173][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.224173][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.224173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.224173][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.224173][ T72] netlink_unicast+0x449/0x710 [ 1792.224173][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.224173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.224173][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.224173][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.224173][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.224173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.224173][ T72] [ 1792.227430][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1792.227430][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.227430][ T72] ipv6_find_idev+0x102/0x170 [ 1792.227430][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.227430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.227430][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.227430][ T72] netlink_unicast+0x449/0x710 [ 1792.227430][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.227430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.227430][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.227430][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.227430][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.227430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.227430][ T72] [ 1792.229839][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1792.229839][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.229839][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.229839][ T72] ipv6_find_idev+0x102/0x170 [ 1792.229839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.229839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.229839][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.229839][ T72] netlink_unicast+0x449/0x710 [ 1792.229839][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.229839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.229839][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.229839][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.229839][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.229839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.229839][ T72] [ 1792.232531][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1792.233870][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1792.233870][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.233870][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.233870][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.233870][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.233870][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.233870][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.233870][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.233870][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.233870][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.233870][ T72] netlink_unicast+0x449/0x710 [ 1792.233870][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.233870][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.233870][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.233870][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.233870][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.233870][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.233870][ T72] [ 1792.236497][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1792.236497][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.236497][ T72] ipv6_find_idev+0x102/0x170 [ 1792.236497][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.236497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.236497][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.236497][ T72] netlink_unicast+0x449/0x710 [ 1792.236497][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.236497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.236497][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.236497][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.236497][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.236497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.236497][ T72] [ 1792.238589][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1792.238589][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.238589][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.238589][ T72] ipv6_find_idev+0x102/0x170 [ 1792.238589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.238589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.238589][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.238589][ T72] netlink_unicast+0x449/0x710 [ 1792.238589][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.238589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.238589][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.238589][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.238589][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.238589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.238589][ T72] [ 1792.241444][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1792.241990][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1792.241990][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.241990][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.241990][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.241990][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.241990][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.241990][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.241990][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.241990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.241990][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.241990][ T72] netlink_unicast+0x449/0x710 [ 1792.241990][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.241990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.241990][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.241990][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.241990][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.241990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.241990][ T72] [ 1792.245242][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1792.245242][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.245242][ T72] ipv6_find_idev+0x102/0x170 [ 1792.245242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.245242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.245242][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.245242][ T72] netlink_unicast+0x449/0x710 [ 1792.245242][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.245242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.245242][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.245242][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.245242][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.245242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.245242][ T72] [ 1792.247810][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1792.247810][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.247810][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.247810][ T72] ipv6_find_idev+0x102/0x170 [ 1792.247810][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.247810][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.247810][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.247810][ T72] netlink_unicast+0x449/0x710 [ 1792.247810][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.247810][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.247810][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.247810][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.247810][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.247810][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.247810][ T72] [ 1792.250708][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1792.251267][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1792.251267][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.251267][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.251267][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.251267][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.251267][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.251267][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.251267][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.251267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.251267][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.251267][ T72] netlink_unicast+0x449/0x710 [ 1792.251267][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.251267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.251267][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.251267][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.251267][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.251267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.251267][ T72] [ 1792.254614][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1792.254614][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.254614][ T72] ipv6_find_idev+0x102/0x170 [ 1792.254614][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.254614][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.254614][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.254614][ T72] netlink_unicast+0x449/0x710 [ 1792.254614][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.254614][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.254614][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.254614][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.254614][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.254614][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.254614][ T72] [ 1792.257415][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1792.257415][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.257415][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.257415][ T72] ipv6_find_idev+0x102/0x170 [ 1792.257415][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.257415][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.257415][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.257415][ T72] netlink_unicast+0x449/0x710 [ 1792.257415][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.257415][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.257415][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.257415][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.257415][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.257415][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.257415][ T72] [ 1792.260685][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1792.261260][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1792.261260][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.261260][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.261260][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.261260][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.261260][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.261260][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.261260][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.261260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.261260][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.261260][ T72] netlink_unicast+0x449/0x710 [ 1792.261260][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.261260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.261260][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.261260][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.261260][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.261260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.261260][ T72] [ 1792.264952][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1792.264952][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.264952][ T72] ipv6_find_idev+0x102/0x170 [ 1792.264952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.264952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.264952][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.264952][ T72] netlink_unicast+0x449/0x710 [ 1792.264952][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.264952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.264952][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.264952][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.264952][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.264952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.264952][ T72] [ 1792.268026][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1792.268026][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.268026][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.268026][ T72] ipv6_find_idev+0x102/0x170 [ 1792.268026][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.268026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.268026][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.268026][ T72] netlink_unicast+0x449/0x710 [ 1792.268026][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.268026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.268026][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.268026][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.268026][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.268026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.268026][ T72] [ 1792.271574][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1792.272140][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1792.272140][ T72] netdev_get_by_index+0x5e/0x80 [ 1792.272140][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1792.272140][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1792.272140][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1792.272140][ T72] ipv6_add_addr+0x411/0x2000 [ 1792.272140][ T72] inet6_addr_add+0x30e/0xa40 [ 1792.272140][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1792.272140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.272140][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.272140][ T72] netlink_unicast+0x449/0x710 [ 1792.272140][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.272140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.272140][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.272140][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.272140][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.272140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.272140][ T72] [ 1792.275908][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1792.275908][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1792.275908][ T72] ipv6_find_idev+0x102/0x170 [ 1792.275908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.275908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.275908][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.275908][ T72] netlink_unicast+0x449/0x710 [ 1792.275908][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.275908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.275908][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.275908][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.275908][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.275908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.275908][ T72] [ 1792.279011][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1792.279011][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1792.279011][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1792.279011][ T72] ipv6_find_idev+0x102/0x170 [ 1792.279011][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1792.279011][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1792.279011][ T72] netlink_rcv_skb+0x130/0x360 [ 1792.279011][ T72] netlink_unicast+0x449/0x710 [ 1792.279011][ T72] netlink_sendmsg+0x723/0xbe0 [ 1792.279011][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1792.279011][ T72] ___sys_sendmsg+0xee/0x170 [ 1792.279011][ T72] __sys_sendmsg+0xcd/0x170 [ 1792.279011][ T72] do_syscall_64+0xc6/0x1e0 [ 1792.279011][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1792.279011][ T72] [ 1802.518875][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1802.519282][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1802.519282][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.519282][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.519282][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.519282][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.519282][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.519282][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.519282][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.519282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.519282][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.519282][ T72] netlink_unicast+0x449/0x710 [ 1802.519282][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.519282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.519282][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.519282][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.519282][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.519282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.519282][ T72] [ 1802.521254][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1802.521254][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.521254][ T72] ipv6_find_idev+0x102/0x170 [ 1802.521254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.521254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.521254][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.521254][ T72] netlink_unicast+0x449/0x710 [ 1802.521254][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.521254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.521254][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.521254][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.521254][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.521254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.521254][ T72] [ 1802.522786][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1802.522786][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.522786][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.522786][ T72] ipv6_find_idev+0x102/0x170 [ 1802.522786][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.522786][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.522786][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.522786][ T72] netlink_unicast+0x449/0x710 [ 1802.522786][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.522786][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.522786][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.522786][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.522786][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.522786][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.522786][ T72] [ 1802.524494][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1802.524775][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1802.524775][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.524775][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.524775][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.524775][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.524775][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.524775][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.524775][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.524775][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.524775][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.524775][ T72] netlink_unicast+0x449/0x710 [ 1802.524775][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.524775][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.524775][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.524775][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.524775][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.524775][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.524775][ T72] [ 1802.526734][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1802.526734][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.526734][ T72] ipv6_find_idev+0x102/0x170 [ 1802.526734][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.526734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.526734][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.526734][ T72] netlink_unicast+0x449/0x710 [ 1802.526734][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.526734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.526734][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.526734][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.526734][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.526734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.526734][ T72] [ 1802.528251][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1802.528251][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.528251][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.528251][ T72] ipv6_find_idev+0x102/0x170 [ 1802.528251][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.528251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.528251][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.528251][ T72] netlink_unicast+0x449/0x710 [ 1802.528251][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.528251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.528251][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.528251][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.528251][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.528251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.528251][ T72] [ 1802.529907][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1802.530164][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1802.530164][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.530164][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.530164][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.530164][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.530164][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.530164][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.530164][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.530164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.530164][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.530164][ T72] netlink_unicast+0x449/0x710 [ 1802.530164][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.530164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.530164][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.530164][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.530164][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.530164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.530164][ T72] [ 1802.532130][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1802.532130][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.532130][ T72] ipv6_find_idev+0x102/0x170 [ 1802.532130][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.532130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.532130][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.532130][ T72] netlink_unicast+0x449/0x710 [ 1802.532130][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.532130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.532130][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.532130][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.532130][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.532130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.532130][ T72] [ 1802.533659][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1802.533659][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.533659][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.533659][ T72] ipv6_find_idev+0x102/0x170 [ 1802.533659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.533659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.533659][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.533659][ T72] netlink_unicast+0x449/0x710 [ 1802.533659][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.533659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.533659][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.533659][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.533659][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.533659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.533659][ T72] [ 1802.535309][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1802.535570][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1802.535570][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.535570][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.535570][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.535570][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.535570][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.535570][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.535570][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.535570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.535570][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.535570][ T72] netlink_unicast+0x449/0x710 [ 1802.535570][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.535570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.535570][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.535570][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.535570][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.535570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.535570][ T72] [ 1802.537536][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1802.537536][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.537536][ T72] ipv6_find_idev+0x102/0x170 [ 1802.537536][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.537536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.537536][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.537536][ T72] netlink_unicast+0x449/0x710 [ 1802.537536][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.537536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.537536][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.537536][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.537536][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.537536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.537536][ T72] [ 1802.539046][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1802.539046][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.539046][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.539046][ T72] ipv6_find_idev+0x102/0x170 [ 1802.539046][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.539046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.539046][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.539046][ T72] netlink_unicast+0x449/0x710 [ 1802.539046][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.539046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.539046][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.539046][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.539046][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.539046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.539046][ T72] [ 1802.541116][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1802.541376][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1802.541376][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.541376][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.541376][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.541376][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.541376][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.541376][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.541376][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.541376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.541376][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.541376][ T72] netlink_unicast+0x449/0x710 [ 1802.541376][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.541376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.541376][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.541376][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.541376][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.541376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.541376][ T72] [ 1802.543346][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1802.543346][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.543346][ T72] ipv6_find_idev+0x102/0x170 [ 1802.543346][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.543346][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.543346][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.543346][ T72] netlink_unicast+0x449/0x710 [ 1802.543346][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.543346][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.543346][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.543346][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.543346][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.543346][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.543346][ T72] [ 1802.544876][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1802.544876][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.544876][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.544876][ T72] ipv6_find_idev+0x102/0x170 [ 1802.544876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.544876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.544876][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.544876][ T72] netlink_unicast+0x449/0x710 [ 1802.544876][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.544876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.544876][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.544876][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.544876][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.544876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.544876][ T72] [ 1802.546576][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1802.546930][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1802.546930][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.546930][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.546930][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.546930][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.546930][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.546930][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.546930][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.546930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.546930][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.546930][ T72] netlink_unicast+0x449/0x710 [ 1802.546930][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.546930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.546930][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.546930][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.546930][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.546930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.546930][ T72] [ 1802.548954][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1802.548954][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.548954][ T72] ipv6_find_idev+0x102/0x170 [ 1802.548954][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.548954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.548954][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.548954][ T72] netlink_unicast+0x449/0x710 [ 1802.548954][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.548954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.548954][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.548954][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.548954][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.548954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.548954][ T72] [ 1802.550658][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1802.550658][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.550658][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.550658][ T72] ipv6_find_idev+0x102/0x170 [ 1802.550658][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.550658][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.550658][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.550658][ T72] netlink_unicast+0x449/0x710 [ 1802.550658][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.550658][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.550658][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.550658][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.550658][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.550658][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.550658][ T72] [ 1802.552668][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1802.552985][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1802.552985][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.552985][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.552985][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.552985][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.552985][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.552985][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.552985][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.552985][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.552985][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.552985][ T72] netlink_unicast+0x449/0x710 [ 1802.552985][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.552985][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.552985][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.552985][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.552985][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.552985][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.552985][ T72] [ 1802.555126][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1802.555126][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.555126][ T72] ipv6_find_idev+0x102/0x170 [ 1802.555126][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.555126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.555126][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.555126][ T72] netlink_unicast+0x449/0x710 [ 1802.555126][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.555126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.555126][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.555126][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.555126][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.555126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.555126][ T72] [ 1802.556758][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1802.556758][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.556758][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.556758][ T72] ipv6_find_idev+0x102/0x170 [ 1802.556758][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.556758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.556758][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.556758][ T72] netlink_unicast+0x449/0x710 [ 1802.556758][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.556758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.556758][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.556758][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.556758][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.556758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.556758][ T72] [ 1802.558694][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1802.559022][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1802.559022][ T72] netdev_get_by_index+0x5e/0x80 [ 1802.559022][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1802.559022][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1802.559022][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1802.559022][ T72] ipv6_add_addr+0x411/0x2000 [ 1802.559022][ T72] inet6_addr_add+0x30e/0xa40 [ 1802.559022][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1802.559022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.559022][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.559022][ T72] netlink_unicast+0x449/0x710 [ 1802.559022][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.559022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.559022][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.559022][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.559022][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.559022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.559022][ T72] [ 1802.561175][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1802.561175][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1802.561175][ T72] ipv6_find_idev+0x102/0x170 [ 1802.561175][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.561175][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.561175][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.561175][ T72] netlink_unicast+0x449/0x710 [ 1802.561175][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.561175][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.561175][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.561175][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.561175][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.561175][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.561175][ T72] [ 1802.563439][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1802.563439][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1802.563439][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1802.563439][ T72] ipv6_find_idev+0x102/0x170 [ 1802.563439][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1802.563439][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1802.563439][ T72] netlink_rcv_skb+0x130/0x360 [ 1802.563439][ T72] netlink_unicast+0x449/0x710 [ 1802.563439][ T72] netlink_sendmsg+0x723/0xbe0 [ 1802.563439][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1802.563439][ T72] ___sys_sendmsg+0xee/0x170 [ 1802.563439][ T72] __sys_sendmsg+0xcd/0x170 [ 1802.563439][ T72] do_syscall_64+0xc6/0x1e0 [ 1802.563439][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1802.563439][ T72] [ 1812.806837][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1812.807299][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1812.807299][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.807299][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.807299][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.807299][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.807299][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.807299][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.807299][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.807299][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.807299][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.807299][ T72] netlink_unicast+0x449/0x710 [ 1812.807299][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.807299][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.807299][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.807299][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.807299][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.807299][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.807299][ T72] [ 1812.809281][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1812.809281][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.809281][ T72] ipv6_find_idev+0x102/0x170 [ 1812.809281][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.809281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.809281][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.809281][ T72] netlink_unicast+0x449/0x710 [ 1812.809281][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.809281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.809281][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.809281][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.809281][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.809281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.809281][ T72] [ 1812.810799][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1812.810799][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.810799][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.810799][ T72] ipv6_find_idev+0x102/0x170 [ 1812.810799][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.810799][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.810799][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.810799][ T72] netlink_unicast+0x449/0x710 [ 1812.810799][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.810799][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.810799][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.810799][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.810799][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.810799][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.810799][ T72] [ 1812.812572][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1812.812859][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1812.812859][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.812859][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.812859][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.812859][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.812859][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.812859][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.812859][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.812859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.812859][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.812859][ T72] netlink_unicast+0x449/0x710 [ 1812.812859][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.812859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.812859][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.812859][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.812859][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.812859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.812859][ T72] [ 1812.814811][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1812.814811][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.814811][ T72] ipv6_find_idev+0x102/0x170 [ 1812.814811][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.814811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.814811][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.814811][ T72] netlink_unicast+0x449/0x710 [ 1812.814811][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.814811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.814811][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.814811][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.814811][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.814811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.814811][ T72] [ 1812.816339][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1812.816339][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.816339][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.816339][ T72] ipv6_find_idev+0x102/0x170 [ 1812.816339][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.816339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.816339][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.816339][ T72] netlink_unicast+0x449/0x710 [ 1812.816339][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.816339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.816339][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.816339][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.816339][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.816339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.816339][ T72] [ 1812.817992][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1812.818250][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1812.818250][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.818250][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.818250][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.818250][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.818250][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.818250][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.818250][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.818250][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.818250][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.818250][ T72] netlink_unicast+0x449/0x710 [ 1812.818250][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.818250][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.818250][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.818250][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.818250][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.818250][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.818250][ T72] [ 1812.820210][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1812.820210][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.820210][ T72] ipv6_find_idev+0x102/0x170 [ 1812.820210][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.820210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.820210][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.820210][ T72] netlink_unicast+0x449/0x710 [ 1812.820210][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.820210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.820210][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.820210][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.820210][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.820210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.820210][ T72] [ 1812.821716][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1812.821716][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.821716][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.821716][ T72] ipv6_find_idev+0x102/0x170 [ 1812.821716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.821716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.821716][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.821716][ T72] netlink_unicast+0x449/0x710 [ 1812.821716][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.821716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.821716][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.821716][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.821716][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.821716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.821716][ T72] [ 1812.823371][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1812.823644][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1812.823644][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.823644][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.823644][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.823644][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.823644][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.823644][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.823644][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.823644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.823644][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.823644][ T72] netlink_unicast+0x449/0x710 [ 1812.823644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.823644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.823644][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.823644][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.823644][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.823644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.823644][ T72] [ 1812.825607][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1812.825607][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.825607][ T72] ipv6_find_idev+0x102/0x170 [ 1812.825607][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.825607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.825607][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.825607][ T72] netlink_unicast+0x449/0x710 [ 1812.825607][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.825607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.825607][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.825607][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.825607][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.825607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.825607][ T72] [ 1812.827114][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1812.827114][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.827114][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.827114][ T72] ipv6_find_idev+0x102/0x170 [ 1812.827114][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.827114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.827114][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.827114][ T72] netlink_unicast+0x449/0x710 [ 1812.827114][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.827114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.827114][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.827114][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.827114][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.827114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.827114][ T72] [ 1812.829155][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1812.829412][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1812.829412][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.829412][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.829412][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.829412][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.829412][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.829412][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.829412][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.829412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.829412][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.829412][ T72] netlink_unicast+0x449/0x710 [ 1812.829412][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.829412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.829412][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.829412][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.829412][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.829412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.829412][ T72] [ 1812.831361][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1812.831361][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.831361][ T72] ipv6_find_idev+0x102/0x170 [ 1812.831361][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.831361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.831361][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.831361][ T72] netlink_unicast+0x449/0x710 [ 1812.831361][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.831361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.831361][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.831361][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.831361][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.831361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.831361][ T72] [ 1812.832871][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1812.832871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.832871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.832871][ T72] ipv6_find_idev+0x102/0x170 [ 1812.832871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.832871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.832871][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.832871][ T72] netlink_unicast+0x449/0x710 [ 1812.832871][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.832871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.832871][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.832871][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.832871][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.832871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.832871][ T72] [ 1812.834560][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1812.834871][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1812.834871][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.834871][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.834871][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.834871][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.834871][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.834871][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.834871][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.834871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.834871][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.834871][ T72] netlink_unicast+0x449/0x710 [ 1812.834871][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.834871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.834871][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.834871][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.834871][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.834871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.834871][ T72] [ 1812.836881][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1812.836881][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.836881][ T72] ipv6_find_idev+0x102/0x170 [ 1812.836881][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.836881][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.836881][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.836881][ T72] netlink_unicast+0x449/0x710 [ 1812.836881][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.836881][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.836881][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.836881][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.836881][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.836881][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.836881][ T72] [ 1812.838625][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1812.838625][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.838625][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.838625][ T72] ipv6_find_idev+0x102/0x170 [ 1812.838625][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.838625][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.838625][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.838625][ T72] netlink_unicast+0x449/0x710 [ 1812.838625][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.838625][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.838625][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.838625][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.838625][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.838625][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.838625][ T72] [ 1812.840526][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1812.840839][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1812.840839][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.840839][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.840839][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.840839][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.840839][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.840839][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.840839][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.840839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.840839][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.840839][ T72] netlink_unicast+0x449/0x710 [ 1812.840839][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.840839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.840839][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.840839][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.840839][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.840839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.840839][ T72] [ 1812.843023][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1812.843023][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.843023][ T72] ipv6_find_idev+0x102/0x170 [ 1812.843023][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.843023][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.843023][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.843023][ T72] netlink_unicast+0x449/0x710 [ 1812.843023][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.843023][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.843023][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.843023][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.843023][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.843023][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.843023][ T72] [ 1812.844795][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1812.844795][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.844795][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.844795][ T72] ipv6_find_idev+0x102/0x170 [ 1812.844795][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.844795][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.844795][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.844795][ T72] netlink_unicast+0x449/0x710 [ 1812.844795][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.844795][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.844795][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.844795][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.844795][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.844795][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.844795][ T72] [ 1812.846728][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1812.847048][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1812.847048][ T72] netdev_get_by_index+0x5e/0x80 [ 1812.847048][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1812.847048][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1812.847048][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1812.847048][ T72] ipv6_add_addr+0x411/0x2000 [ 1812.847048][ T72] inet6_addr_add+0x30e/0xa40 [ 1812.847048][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1812.847048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.847048][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.847048][ T72] netlink_unicast+0x449/0x710 [ 1812.847048][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.847048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.847048][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.847048][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.847048][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.847048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.847048][ T72] [ 1812.849246][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1812.849246][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1812.849246][ T72] ipv6_find_idev+0x102/0x170 [ 1812.849246][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.849246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.849246][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.849246][ T72] netlink_unicast+0x449/0x710 [ 1812.849246][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.849246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.849246][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.849246][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.849246][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.849246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.849246][ T72] [ 1812.850936][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1812.850936][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1812.850936][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1812.850936][ T72] ipv6_find_idev+0x102/0x170 [ 1812.850936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1812.850936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1812.850936][ T72] netlink_rcv_skb+0x130/0x360 [ 1812.850936][ T72] netlink_unicast+0x449/0x710 [ 1812.850936][ T72] netlink_sendmsg+0x723/0xbe0 [ 1812.850936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1812.850936][ T72] ___sys_sendmsg+0xee/0x170 [ 1812.850936][ T72] __sys_sendmsg+0xcd/0x170 [ 1812.850936][ T72] do_syscall_64+0xc6/0x1e0 [ 1812.850936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1812.850936][ T72] [ 1823.094998][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1823.095763][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1823.095763][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.095763][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.095763][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.095763][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.095763][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.095763][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.095763][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.095763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.095763][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.095763][ T72] netlink_unicast+0x449/0x710 [ 1823.095763][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.095763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.095763][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.095763][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.095763][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.095763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.095763][ T72] [ 1823.099125][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1823.099125][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.099125][ T72] ipv6_find_idev+0x102/0x170 [ 1823.099125][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.099125][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.099125][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.099125][ T72] netlink_unicast+0x449/0x710 [ 1823.099125][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.099125][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.099125][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.099125][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.099125][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.099125][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.099125][ T72] [ 1823.101694][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1823.101694][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.101694][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.101694][ T72] ipv6_find_idev+0x102/0x170 [ 1823.101694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.101694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.101694][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.101694][ T72] netlink_unicast+0x449/0x710 [ 1823.101694][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.101694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.101694][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.101694][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.101694][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.101694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.101694][ T72] [ 1823.104603][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1823.105118][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1823.105118][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.105118][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.105118][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.105118][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.105118][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.105118][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.105118][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.105118][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.105118][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.105118][ T72] netlink_unicast+0x449/0x710 [ 1823.105118][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.105118][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.105118][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.105118][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.105118][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.105118][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.105118][ T72] [ 1823.108320][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1823.108320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.108320][ T72] ipv6_find_idev+0x102/0x170 [ 1823.108320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.108320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.108320][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.108320][ T72] netlink_unicast+0x449/0x710 [ 1823.108320][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.108320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.108320][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.108320][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.108320][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.108320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.108320][ T72] [ 1823.110811][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1823.110811][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.110811][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.110811][ T72] ipv6_find_idev+0x102/0x170 [ 1823.110811][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.110811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.110811][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.110811][ T72] netlink_unicast+0x449/0x710 [ 1823.110811][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.110811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.110811][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.110811][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.110811][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.110811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.110811][ T72] [ 1823.113660][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1823.114157][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1823.114157][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.114157][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.114157][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.114157][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.114157][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.114157][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.114157][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.114157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.114157][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.114157][ T72] netlink_unicast+0x449/0x710 [ 1823.114157][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.114157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.114157][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.114157][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.114157][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.114157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.114157][ T72] [ 1823.117320][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1823.117320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.117320][ T72] ipv6_find_idev+0x102/0x170 [ 1823.117320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.117320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.117320][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.117320][ T72] netlink_unicast+0x449/0x710 [ 1823.117320][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.117320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.117320][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.117320][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.117320][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.117320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.117320][ T72] [ 1823.119890][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1823.119890][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.119890][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.119890][ T72] ipv6_find_idev+0x102/0x170 [ 1823.119890][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.119890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.119890][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.119890][ T72] netlink_unicast+0x449/0x710 [ 1823.119890][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.119890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.119890][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.119890][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.119890][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.119890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.119890][ T72] [ 1823.122949][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1823.123583][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1823.123583][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.123583][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.123583][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.123583][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.123583][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.123583][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.123583][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.123583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.123583][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.123583][ T72] netlink_unicast+0x449/0x710 [ 1823.123583][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.123583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.123583][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.123583][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.123583][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.123583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.123583][ T72] [ 1823.127308][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1823.127308][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.127308][ T72] ipv6_find_idev+0x102/0x170 [ 1823.127308][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.127308][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.127308][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.127308][ T72] netlink_unicast+0x449/0x710 [ 1823.127308][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.127308][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.127308][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.127308][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.127308][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.127308][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.127308][ T72] [ 1823.130016][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1823.130016][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.130016][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.130016][ T72] ipv6_find_idev+0x102/0x170 [ 1823.130016][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.130016][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.130016][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.130016][ T72] netlink_unicast+0x449/0x710 [ 1823.130016][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.130016][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.130016][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.130016][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.130016][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.130016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.130016][ T72] [ 1823.133015][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1823.133504][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1823.133504][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.133504][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.133504][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.133504][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.133504][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.133504][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.133504][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.133504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.133504][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.133504][ T72] netlink_unicast+0x449/0x710 [ 1823.133504][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.133504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.133504][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.133504][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.133504][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.133504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.133504][ T72] [ 1823.136545][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1823.136545][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.136545][ T72] ipv6_find_idev+0x102/0x170 [ 1823.136545][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.136545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.136545][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.136545][ T72] netlink_unicast+0x449/0x710 [ 1823.136545][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.136545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.136545][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.136545][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.136545][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.136545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.136545][ T72] [ 1823.139091][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1823.139091][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.139091][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.139091][ T72] ipv6_find_idev+0x102/0x170 [ 1823.139091][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.139091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.139091][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.139091][ T72] netlink_unicast+0x449/0x710 [ 1823.139091][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.139091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.139091][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.139091][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.139091][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.139091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.139091][ T72] [ 1823.142301][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1823.142790][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1823.142790][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.142790][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.142790][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.142790][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.142790][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.142790][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.142790][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.142790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.142790][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.142790][ T72] netlink_unicast+0x449/0x710 [ 1823.142790][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.142790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.142790][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.142790][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.142790][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.142790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.142790][ T72] [ 1823.147056][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1823.147056][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.147056][ T72] ipv6_find_idev+0x102/0x170 [ 1823.147056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.147056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.147056][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.147056][ T72] netlink_unicast+0x449/0x710 [ 1823.147056][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.147056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.147056][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.147056][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.147056][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.147056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.147056][ T72] [ 1823.149804][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1823.149804][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.149804][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.149804][ T72] ipv6_find_idev+0x102/0x170 [ 1823.149804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.149804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.149804][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.149804][ T72] netlink_unicast+0x449/0x710 [ 1823.149804][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.149804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.149804][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.149804][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.149804][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.149804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.149804][ T72] [ 1823.153053][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1823.153480][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1823.153480][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.153480][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.153480][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.153480][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.153480][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.153480][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.153480][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.153480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.153480][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.153480][ T72] netlink_unicast+0x449/0x710 [ 1823.153480][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.153480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.153480][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.153480][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.153480][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.153480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.153480][ T72] [ 1823.157060][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1823.157060][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.157060][ T72] ipv6_find_idev+0x102/0x170 [ 1823.157060][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.157060][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.157060][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.157060][ T72] netlink_unicast+0x449/0x710 [ 1823.157060][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.157060][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.157060][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.157060][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.157060][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.157060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.157060][ T72] [ 1823.160179][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1823.160179][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.160179][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.160179][ T72] ipv6_find_idev+0x102/0x170 [ 1823.160179][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.160179][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.160179][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.160179][ T72] netlink_unicast+0x449/0x710 [ 1823.160179][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.160179][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.160179][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.160179][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.160179][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.160179][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.160179][ T72] [ 1823.163597][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1823.164200][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1823.164200][ T72] netdev_get_by_index+0x5e/0x80 [ 1823.164200][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1823.164200][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1823.164200][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1823.164200][ T72] ipv6_add_addr+0x411/0x2000 [ 1823.164200][ T72] inet6_addr_add+0x30e/0xa40 [ 1823.164200][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1823.164200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.164200][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.164200][ T72] netlink_unicast+0x449/0x710 [ 1823.164200][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.164200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.164200][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.164200][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.164200][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.164200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.164200][ T72] [ 1823.167611][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1823.167611][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1823.167611][ T72] ipv6_find_idev+0x102/0x170 [ 1823.167611][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.167611][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.167611][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.167611][ T72] netlink_unicast+0x449/0x710 [ 1823.167611][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.167611][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.167611][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.167611][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.167611][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.167611][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.167611][ T72] [ 1823.170388][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1823.170388][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1823.170388][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1823.170388][ T72] ipv6_find_idev+0x102/0x170 [ 1823.170388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1823.170388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1823.170388][ T72] netlink_rcv_skb+0x130/0x360 [ 1823.170388][ T72] netlink_unicast+0x449/0x710 [ 1823.170388][ T72] netlink_sendmsg+0x723/0xbe0 [ 1823.170388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1823.170388][ T72] ___sys_sendmsg+0xee/0x170 [ 1823.170388][ T72] __sys_sendmsg+0xcd/0x170 [ 1823.170388][ T72] do_syscall_64+0xc6/0x1e0 [ 1823.170388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1823.170388][ T72] [ 1833.414871][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1833.415644][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1833.415644][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.415644][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.415644][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.415644][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.415644][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.415644][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.415644][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.415644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.415644][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.415644][ T72] netlink_unicast+0x449/0x710 [ 1833.415644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.415644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.415644][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.415644][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.415644][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.415644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.415644][ T72] [ 1833.419083][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1833.419083][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.419083][ T72] ipv6_find_idev+0x102/0x170 [ 1833.419083][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.419083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.419083][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.419083][ T72] netlink_unicast+0x449/0x710 [ 1833.419083][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.419083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.419083][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.419083][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.419083][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.419083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.419083][ T72] [ 1833.421719][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1833.421719][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.421719][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.421719][ T72] ipv6_find_idev+0x102/0x170 [ 1833.421719][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.421719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.421719][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.421719][ T72] netlink_unicast+0x449/0x710 [ 1833.421719][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.421719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.421719][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.421719][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.421719][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.421719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.421719][ T72] [ 1833.424621][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1833.425126][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1833.425126][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.425126][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.425126][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.425126][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.425126][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.425126][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.425126][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.425126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.425126][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.425126][ T72] netlink_unicast+0x449/0x710 [ 1833.425126][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.425126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.425126][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.425126][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.425126][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.425126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.425126][ T72] [ 1833.428558][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1833.428558][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.428558][ T72] ipv6_find_idev+0x102/0x170 [ 1833.428558][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.428558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.428558][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.428558][ T72] netlink_unicast+0x449/0x710 [ 1833.428558][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.428558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.428558][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.428558][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.428558][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.428558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.428558][ T72] [ 1833.431157][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1833.431157][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.431157][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.431157][ T72] ipv6_find_idev+0x102/0x170 [ 1833.431157][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.431157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.431157][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.431157][ T72] netlink_unicast+0x449/0x710 [ 1833.431157][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.431157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.431157][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.431157][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.431157][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.431157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.431157][ T72] [ 1833.434128][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1833.434571][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1833.434571][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.434571][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.434571][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.434571][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.434571][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.434571][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.434571][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.434571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.434571][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.434571][ T72] netlink_unicast+0x449/0x710 [ 1833.434571][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.434571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.434571][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.434571][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.434571][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.434571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.434571][ T72] [ 1833.438356][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1833.438356][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.438356][ T72] ipv6_find_idev+0x102/0x170 [ 1833.438356][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.438356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.438356][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.438356][ T72] netlink_unicast+0x449/0x710 [ 1833.438356][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.438356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.438356][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.438356][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.438356][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.438356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.438356][ T72] [ 1833.440837][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1833.440837][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.440837][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.440837][ T72] ipv6_find_idev+0x102/0x170 [ 1833.440837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.440837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.440837][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.440837][ T72] netlink_unicast+0x449/0x710 [ 1833.440837][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.440837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.440837][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.440837][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.440837][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.440837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.440837][ T72] [ 1833.443690][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1833.444956][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1833.444956][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.444956][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.444956][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.444956][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.444956][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.444956][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.444956][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.444956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.444956][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.444956][ T72] netlink_unicast+0x449/0x710 [ 1833.444956][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.444956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.444956][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.444956][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.444956][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.444956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.444956][ T72] [ 1833.448405][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1833.448405][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.448405][ T72] ipv6_find_idev+0x102/0x170 [ 1833.448405][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.448405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.448405][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.448405][ T72] netlink_unicast+0x449/0x710 [ 1833.448405][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.448405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.448405][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.448405][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.448405][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.448405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.448405][ T72] [ 1833.451025][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1833.451025][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.451025][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.451025][ T72] ipv6_find_idev+0x102/0x170 [ 1833.451025][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.451025][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.451025][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.451025][ T72] netlink_unicast+0x449/0x710 [ 1833.451025][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.451025][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.451025][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.451025][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.451025][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.451025][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.451025][ T72] [ 1833.453980][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1833.454528][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1833.454528][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.454528][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.454528][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.454528][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.454528][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.454528][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.454528][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.454528][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.454528][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.454528][ T72] netlink_unicast+0x449/0x710 [ 1833.454528][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.454528][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.454528][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.454528][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.454528][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.454528][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.454528][ T72] [ 1833.457908][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1833.457908][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.457908][ T72] ipv6_find_idev+0x102/0x170 [ 1833.457908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.457908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.457908][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.457908][ T72] netlink_unicast+0x449/0x710 [ 1833.457908][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.457908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.457908][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.457908][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.457908][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.457908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.457908][ T72] [ 1833.460504][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1833.460504][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.460504][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.460504][ T72] ipv6_find_idev+0x102/0x170 [ 1833.460504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.460504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.460504][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.460504][ T72] netlink_unicast+0x449/0x710 [ 1833.460504][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.460504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.460504][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.460504][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.460504][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.460504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.460504][ T72] [ 1833.463482][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1833.464037][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1833.464037][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.464037][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.464037][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.464037][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.464037][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.464037][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.464037][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.464037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.464037][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.464037][ T72] netlink_unicast+0x449/0x710 [ 1833.464037][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.464037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.464037][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.464037][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.464037][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.464037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.464037][ T72] [ 1833.467468][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1833.467468][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.467468][ T72] ipv6_find_idev+0x102/0x170 [ 1833.467468][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.467468][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.467468][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.467468][ T72] netlink_unicast+0x449/0x710 [ 1833.467468][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.467468][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.467468][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.467468][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.467468][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.467468][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.467468][ T72] [ 1833.470428][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1833.470428][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.470428][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.470428][ T72] ipv6_find_idev+0x102/0x170 [ 1833.470428][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.470428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.470428][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.470428][ T72] netlink_unicast+0x449/0x710 [ 1833.470428][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.470428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.470428][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.470428][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.470428][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.470428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.470428][ T72] [ 1833.473803][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1833.474301][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1833.474301][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.474301][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.474301][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.474301][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.474301][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.474301][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.474301][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.474301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.474301][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.474301][ T72] netlink_unicast+0x449/0x710 [ 1833.474301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.474301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.474301][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.474301][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.474301][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.474301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.474301][ T72] [ 1833.477930][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1833.477930][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.477930][ T72] ipv6_find_idev+0x102/0x170 [ 1833.477930][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.477930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.477930][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.477930][ T72] netlink_unicast+0x449/0x710 [ 1833.477930][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.477930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.477930][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.477930][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.477930][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.477930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.477930][ T72] [ 1833.480999][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1833.480999][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.480999][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.480999][ T72] ipv6_find_idev+0x102/0x170 [ 1833.480999][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.480999][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.480999][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.480999][ T72] netlink_unicast+0x449/0x710 [ 1833.480999][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.480999][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.480999][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.480999][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.480999][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.480999][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.480999][ T72] [ 1833.484312][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1833.484887][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1833.484887][ T72] netdev_get_by_index+0x5e/0x80 [ 1833.484887][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1833.484887][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1833.484887][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1833.484887][ T72] ipv6_add_addr+0x411/0x2000 [ 1833.484887][ T72] inet6_addr_add+0x30e/0xa40 [ 1833.484887][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1833.484887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.484887][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.484887][ T72] netlink_unicast+0x449/0x710 [ 1833.484887][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.484887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.484887][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.484887][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.484887][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.484887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.484887][ T72] [ 1833.488653][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1833.488653][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1833.488653][ T72] ipv6_find_idev+0x102/0x170 [ 1833.488653][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.488653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.488653][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.488653][ T72] netlink_unicast+0x449/0x710 [ 1833.488653][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.488653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.488653][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.488653][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.488653][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.488653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.488653][ T72] [ 1833.491726][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1833.491726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1833.491726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1833.491726][ T72] ipv6_find_idev+0x102/0x170 [ 1833.491726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1833.491726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1833.491726][ T72] netlink_rcv_skb+0x130/0x360 [ 1833.491726][ T72] netlink_unicast+0x449/0x710 [ 1833.491726][ T72] netlink_sendmsg+0x723/0xbe0 [ 1833.491726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1833.491726][ T72] ___sys_sendmsg+0xee/0x170 [ 1833.491726][ T72] __sys_sendmsg+0xcd/0x170 [ 1833.491726][ T72] do_syscall_64+0xc6/0x1e0 [ 1833.491726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1833.491726][ T72] [ 1843.734907][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1843.735504][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1843.735504][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.735504][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.735504][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.735504][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.735504][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.735504][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.735504][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.735504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.735504][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.735504][ T72] netlink_unicast+0x449/0x710 [ 1843.735504][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.735504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.735504][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.735504][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.735504][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.735504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.735504][ T72] [ 1843.737524][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1843.737524][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.737524][ T72] ipv6_find_idev+0x102/0x170 [ 1843.737524][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.737524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.737524][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.737524][ T72] netlink_unicast+0x449/0x710 [ 1843.737524][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.737524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.737524][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.737524][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.737524][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.737524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.737524][ T72] [ 1843.739068][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1843.739068][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.739068][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.739068][ T72] ipv6_find_idev+0x102/0x170 [ 1843.739068][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.739068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.739068][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.739068][ T72] netlink_unicast+0x449/0x710 [ 1843.739068][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.739068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.739068][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.739068][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.739068][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.739068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.739068][ T72] [ 1843.740766][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1843.741047][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1843.741047][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.741047][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.741047][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.741047][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.741047][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.741047][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.741047][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.741047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.741047][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.741047][ T72] netlink_unicast+0x449/0x710 [ 1843.741047][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.741047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.741047][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.741047][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.741047][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.741047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.741047][ T72] [ 1843.743035][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1843.743035][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.743035][ T72] ipv6_find_idev+0x102/0x170 [ 1843.743035][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.743035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.743035][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.743035][ T72] netlink_unicast+0x449/0x710 [ 1843.743035][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.743035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.743035][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.743035][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.743035][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.743035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.743035][ T72] [ 1843.744618][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1843.744618][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.744618][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.744618][ T72] ipv6_find_idev+0x102/0x170 [ 1843.744618][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.744618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.744618][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.744618][ T72] netlink_unicast+0x449/0x710 [ 1843.744618][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.744618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.744618][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.744618][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.744618][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.744618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.744618][ T72] [ 1843.746282][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1843.746545][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1843.746545][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.746545][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.746545][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.746545][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.746545][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.746545][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.746545][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.746545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.746545][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.746545][ T72] netlink_unicast+0x449/0x710 [ 1843.746545][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.746545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.746545][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.746545][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.746545][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.746545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.746545][ T72] [ 1843.748516][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1843.748516][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.748516][ T72] ipv6_find_idev+0x102/0x170 [ 1843.748516][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.748516][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.748516][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.748516][ T72] netlink_unicast+0x449/0x710 [ 1843.748516][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.748516][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.748516][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.748516][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.748516][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.748516][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.748516][ T72] [ 1843.750041][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1843.750041][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.750041][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.750041][ T72] ipv6_find_idev+0x102/0x170 [ 1843.750041][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.750041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.750041][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.750041][ T72] netlink_unicast+0x449/0x710 [ 1843.750041][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.750041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.750041][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.750041][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.750041][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.750041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.750041][ T72] [ 1843.751708][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1843.752457][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1843.752457][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.752457][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.752457][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.752457][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.752457][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.752457][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.752457][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.752457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.752457][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.752457][ T72] netlink_unicast+0x449/0x710 [ 1843.752457][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.752457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.752457][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.752457][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.752457][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.752457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.752457][ T72] [ 1843.754418][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1843.754418][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.754418][ T72] ipv6_find_idev+0x102/0x170 [ 1843.754418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.754418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.754418][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.754418][ T72] netlink_unicast+0x449/0x710 [ 1843.754418][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.754418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.754418][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.754418][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.754418][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.754418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.754418][ T72] [ 1843.755980][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1843.755980][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.755980][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.755980][ T72] ipv6_find_idev+0x102/0x170 [ 1843.755980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.755980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.755980][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.755980][ T72] netlink_unicast+0x449/0x710 [ 1843.755980][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.755980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.755980][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.755980][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.755980][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.755980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.755980][ T72] [ 1843.757705][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1843.758024][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1843.758024][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.758024][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.758024][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.758024][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.758024][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.758024][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.758024][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.758024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.758024][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.758024][ T72] netlink_unicast+0x449/0x710 [ 1843.758024][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.758024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.758024][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.758024][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.758024][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.758024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.758024][ T72] [ 1843.760394][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1843.760394][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.760394][ T72] ipv6_find_idev+0x102/0x170 [ 1843.760394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.760394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.760394][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.760394][ T72] netlink_unicast+0x449/0x710 [ 1843.760394][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.760394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.760394][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.760394][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.760394][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.760394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.760394][ T72] [ 1843.761916][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1843.761916][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.761916][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.761916][ T72] ipv6_find_idev+0x102/0x170 [ 1843.761916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.761916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.761916][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.761916][ T72] netlink_unicast+0x449/0x710 [ 1843.761916][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.761916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.761916][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.761916][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.761916][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.761916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.761916][ T72] [ 1843.763655][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1843.764088][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1843.764088][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.764088][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.764088][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.764088][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.764088][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.764088][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.764088][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.764088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.764088][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.764088][ T72] netlink_unicast+0x449/0x710 [ 1843.764088][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.764088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.764088][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.764088][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.764088][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.764088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.764088][ T72] [ 1843.766075][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1843.766075][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.766075][ T72] ipv6_find_idev+0x102/0x170 [ 1843.766075][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.766075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.766075][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.766075][ T72] netlink_unicast+0x449/0x710 [ 1843.766075][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.766075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.766075][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.766075][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.766075][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.766075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.766075][ T72] [ 1843.767774][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1843.767774][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.767774][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.767774][ T72] ipv6_find_idev+0x102/0x170 [ 1843.767774][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.767774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.767774][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.767774][ T72] netlink_unicast+0x449/0x710 [ 1843.767774][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.767774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.767774][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.767774][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.767774][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.767774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.767774][ T72] [ 1843.769671][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1843.769990][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1843.769990][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.769990][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.769990][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.769990][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.769990][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.769990][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.769990][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.769990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.769990][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.769990][ T72] netlink_unicast+0x449/0x710 [ 1843.769990][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.769990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.769990][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.769990][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.769990][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.769990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.769990][ T72] [ 1843.772197][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1843.772197][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.772197][ T72] ipv6_find_idev+0x102/0x170 [ 1843.772197][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.772197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.772197][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.772197][ T72] netlink_unicast+0x449/0x710 [ 1843.772197][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.772197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.772197][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.772197][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.772197][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.772197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.772197][ T72] [ 1843.773900][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1843.773900][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.773900][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.773900][ T72] ipv6_find_idev+0x102/0x170 [ 1843.773900][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.773900][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.773900][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.773900][ T72] netlink_unicast+0x449/0x710 [ 1843.773900][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.773900][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.773900][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.773900][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.773900][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.773900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.773900][ T72] [ 1843.775839][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1843.776101][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1843.776101][ T72] netdev_get_by_index+0x5e/0x80 [ 1843.776101][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1843.776101][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1843.776101][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1843.776101][ T72] ipv6_add_addr+0x411/0x2000 [ 1843.776101][ T72] inet6_addr_add+0x30e/0xa40 [ 1843.776101][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1843.776101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.776101][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.776101][ T72] netlink_unicast+0x449/0x710 [ 1843.776101][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.776101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.776101][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.776101][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.776101][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.776101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.776101][ T72] [ 1843.778247][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1843.778247][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1843.778247][ T72] ipv6_find_idev+0x102/0x170 [ 1843.778247][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.778247][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.778247][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.778247][ T72] netlink_unicast+0x449/0x710 [ 1843.778247][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.778247][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.778247][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.778247][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.778247][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.778247][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.778247][ T72] [ 1843.779942][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1843.779942][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1843.779942][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1843.779942][ T72] ipv6_find_idev+0x102/0x170 [ 1843.779942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1843.779942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1843.779942][ T72] netlink_rcv_skb+0x130/0x360 [ 1843.779942][ T72] netlink_unicast+0x449/0x710 [ 1843.779942][ T72] netlink_sendmsg+0x723/0xbe0 [ 1843.779942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1843.779942][ T72] ___sys_sendmsg+0xee/0x170 [ 1843.779942][ T72] __sys_sendmsg+0xcd/0x170 [ 1843.779942][ T72] do_syscall_64+0xc6/0x1e0 [ 1843.779942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1843.779942][ T72] [ 1853.918829][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1853.919332][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1853.919332][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.919332][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.919332][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.919332][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.919332][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.919332][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.919332][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.919332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.919332][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.919332][ T72] netlink_unicast+0x449/0x710 [ 1853.919332][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.919332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.919332][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.919332][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.919332][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.919332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.919332][ T72] [ 1853.921443][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1853.921443][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.921443][ T72] ipv6_find_idev+0x102/0x170 [ 1853.921443][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.921443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.921443][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.921443][ T72] netlink_unicast+0x449/0x710 [ 1853.921443][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.921443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.921443][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.921443][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.921443][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.921443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.921443][ T72] [ 1853.923043][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1853.923043][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.923043][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.923043][ T72] ipv6_find_idev+0x102/0x170 [ 1853.923043][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.923043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.923043][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.923043][ T72] netlink_unicast+0x449/0x710 [ 1853.923043][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.923043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.923043][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.923043][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.923043][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.923043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.923043][ T72] [ 1853.924931][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1853.925215][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1853.925215][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.925215][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.925215][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.925215][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.925215][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.925215][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.925215][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.925215][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.925215][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.925215][ T72] netlink_unicast+0x449/0x710 [ 1853.925215][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.925215][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.925215][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.925215][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.925215][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.925215][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.925215][ T72] [ 1853.927228][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1853.927228][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.927228][ T72] ipv6_find_idev+0x102/0x170 [ 1853.927228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.927228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.927228][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.927228][ T72] netlink_unicast+0x449/0x710 [ 1853.927228][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.927228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.927228][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.927228][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.927228][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.927228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.927228][ T72] [ 1853.928863][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1853.928863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.928863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.928863][ T72] ipv6_find_idev+0x102/0x170 [ 1853.928863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.928863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.928863][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.928863][ T72] netlink_unicast+0x449/0x710 [ 1853.928863][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.928863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.928863][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.928863][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.928863][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.928863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.928863][ T72] [ 1853.930566][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1853.930867][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1853.930867][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.930867][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.930867][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.930867][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.930867][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.930867][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.930867][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.930867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.930867][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.930867][ T72] netlink_unicast+0x449/0x710 [ 1853.930867][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.930867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.930867][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.930867][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.930867][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.930867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.930867][ T72] [ 1853.932892][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1853.932892][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.932892][ T72] ipv6_find_idev+0x102/0x170 [ 1853.932892][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.932892][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.932892][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.932892][ T72] netlink_unicast+0x449/0x710 [ 1853.932892][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.932892][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.932892][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.932892][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.932892][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.932892][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.932892][ T72] [ 1853.934412][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1853.934412][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.934412][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.934412][ T72] ipv6_find_idev+0x102/0x170 [ 1853.934412][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.934412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.934412][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.934412][ T72] netlink_unicast+0x449/0x710 [ 1853.934412][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.934412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.934412][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.934412][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.934412][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.934412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.934412][ T72] [ 1853.936130][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1853.936396][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1853.936396][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.936396][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.936396][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.936396][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.936396][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.936396][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.936396][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.936396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.936396][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.936396][ T72] netlink_unicast+0x449/0x710 [ 1853.936396][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.936396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.936396][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.936396][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.936396][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.936396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.936396][ T72] [ 1853.938431][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1853.938431][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.938431][ T72] ipv6_find_idev+0x102/0x170 [ 1853.938431][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.938431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.938431][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.938431][ T72] netlink_unicast+0x449/0x710 [ 1853.938431][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.938431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.938431][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.938431][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.938431][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.938431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.938431][ T72] [ 1853.940029][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1853.940029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.940029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.940029][ T72] ipv6_find_idev+0x102/0x170 [ 1853.940029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.940029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.940029][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.940029][ T72] netlink_unicast+0x449/0x710 [ 1853.940029][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.940029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.940029][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.940029][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.940029][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.940029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.940029][ T72] [ 1853.942223][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1853.942510][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1853.942510][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.942510][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.942510][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.942510][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.942510][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.942510][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.942510][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.942510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.942510][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.942510][ T72] netlink_unicast+0x449/0x710 [ 1853.942510][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.942510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.942510][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.942510][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.942510][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.942510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.942510][ T72] [ 1853.944562][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1853.944562][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.944562][ T72] ipv6_find_idev+0x102/0x170 [ 1853.944562][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.944562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.944562][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.944562][ T72] netlink_unicast+0x449/0x710 [ 1853.944562][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.944562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.944562][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.944562][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.944562][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.944562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.944562][ T72] [ 1853.946164][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1853.946164][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.946164][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.946164][ T72] ipv6_find_idev+0x102/0x170 [ 1853.946164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.946164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.946164][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.946164][ T72] netlink_unicast+0x449/0x710 [ 1853.946164][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.946164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.946164][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.946164][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.946164][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.946164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.946164][ T72] [ 1853.947961][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1853.948228][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1853.948228][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.948228][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.948228][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.948228][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.948228][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.948228][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.948228][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.948228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.948228][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.948228][ T72] netlink_unicast+0x449/0x710 [ 1853.948228][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.948228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.948228][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.948228][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.948228][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.948228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.948228][ T72] [ 1853.950429][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1853.950429][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.950429][ T72] ipv6_find_idev+0x102/0x170 [ 1853.950429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.950429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.950429][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.950429][ T72] netlink_unicast+0x449/0x710 [ 1853.950429][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.950429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.950429][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.950429][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.950429][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.950429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.950429][ T72] [ 1853.952304][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1853.952304][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.952304][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.952304][ T72] ipv6_find_idev+0x102/0x170 [ 1853.952304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.952304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.952304][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.952304][ T72] netlink_unicast+0x449/0x710 [ 1853.952304][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.952304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.952304][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.952304][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.952304][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.952304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.952304][ T72] [ 1853.954323][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1853.954599][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1853.954599][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.954599][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.954599][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.954599][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.954599][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.954599][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.954599][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.954599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.954599][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.954599][ T72] netlink_unicast+0x449/0x710 [ 1853.954599][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.954599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.954599][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.954599][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.954599][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.954599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.954599][ T72] [ 1853.956856][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1853.956856][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.956856][ T72] ipv6_find_idev+0x102/0x170 [ 1853.956856][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.956856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.956856][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.956856][ T72] netlink_unicast+0x449/0x710 [ 1853.956856][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.956856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.956856][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.956856][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.956856][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.956856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.956856][ T72] [ 1853.958600][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1853.958600][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.958600][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.958600][ T72] ipv6_find_idev+0x102/0x170 [ 1853.958600][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.958600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.958600][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.958600][ T72] netlink_unicast+0x449/0x710 [ 1853.958600][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.958600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.958600][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.958600][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.958600][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.958600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.958600][ T72] [ 1853.960572][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1853.960934][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1853.960934][ T72] netdev_get_by_index+0x5e/0x80 [ 1853.960934][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1853.960934][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1853.960934][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1853.960934][ T72] ipv6_add_addr+0x411/0x2000 [ 1853.960934][ T72] inet6_addr_add+0x30e/0xa40 [ 1853.960934][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1853.960934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.960934][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.960934][ T72] netlink_unicast+0x449/0x710 [ 1853.960934][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.960934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.960934][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.960934][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.960934][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.960934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.960934][ T72] [ 1853.963176][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1853.963176][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1853.963176][ T72] ipv6_find_idev+0x102/0x170 [ 1853.963176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.963176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.963176][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.963176][ T72] netlink_unicast+0x449/0x710 [ 1853.963176][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.963176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.963176][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.963176][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.963176][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.963176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.963176][ T72] [ 1853.964960][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1853.964960][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1853.964960][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1853.964960][ T72] ipv6_find_idev+0x102/0x170 [ 1853.964960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1853.964960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1853.964960][ T72] netlink_rcv_skb+0x130/0x360 [ 1853.964960][ T72] netlink_unicast+0x449/0x710 [ 1853.964960][ T72] netlink_sendmsg+0x723/0xbe0 [ 1853.964960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1853.964960][ T72] ___sys_sendmsg+0xee/0x170 [ 1853.964960][ T72] __sys_sendmsg+0xcd/0x170 [ 1853.964960][ T72] do_syscall_64+0xc6/0x1e0 [ 1853.964960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1853.964960][ T72] [ 1864.206854][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1864.207293][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1864.207293][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.207293][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.207293][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.207293][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.207293][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.207293][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.207293][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.207293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.207293][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.207293][ T72] netlink_unicast+0x449/0x710 [ 1864.207293][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.207293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.207293][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.207293][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.207293][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.207293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.207293][ T72] [ 1864.209419][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1864.209419][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.209419][ T72] ipv6_find_idev+0x102/0x170 [ 1864.209419][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.209419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.209419][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.209419][ T72] netlink_unicast+0x449/0x710 [ 1864.209419][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.209419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.209419][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.209419][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.209419][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.209419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.209419][ T72] [ 1864.210936][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1864.210936][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.210936][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.210936][ T72] ipv6_find_idev+0x102/0x170 [ 1864.210936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.210936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.210936][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.210936][ T72] netlink_unicast+0x449/0x710 [ 1864.210936][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.210936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.210936][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.210936][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.210936][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.210936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.210936][ T72] [ 1864.212620][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1864.212903][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1864.212903][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.212903][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.212903][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.212903][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.212903][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.212903][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.212903][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.212903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.212903][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.212903][ T72] netlink_unicast+0x449/0x710 [ 1864.212903][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.212903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.212903][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.212903][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.212903][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.212903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.212903][ T72] [ 1864.214932][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1864.214932][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.214932][ T72] ipv6_find_idev+0x102/0x170 [ 1864.214932][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.214932][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.214932][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.214932][ T72] netlink_unicast+0x449/0x710 [ 1864.214932][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.214932][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.214932][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.214932][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.214932][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.214932][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.214932][ T72] [ 1864.216679][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1864.216679][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.216679][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.216679][ T72] ipv6_find_idev+0x102/0x170 [ 1864.216679][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.216679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.216679][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.216679][ T72] netlink_unicast+0x449/0x710 [ 1864.216679][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.216679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.216679][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.216679][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.216679][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.216679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.216679][ T72] [ 1864.218420][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1864.218717][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1864.218717][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.218717][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.218717][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.218717][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.218717][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.218717][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.218717][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.218717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.218717][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.218717][ T72] netlink_unicast+0x449/0x710 [ 1864.218717][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.218717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.218717][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.218717][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.218717][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.218717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.218717][ T72] [ 1864.220794][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1864.220794][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.220794][ T72] ipv6_find_idev+0x102/0x170 [ 1864.220794][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.220794][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.220794][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.220794][ T72] netlink_unicast+0x449/0x710 [ 1864.220794][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.220794][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.220794][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.220794][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.220794][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.220794][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.220794][ T72] [ 1864.222316][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1864.222316][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.222316][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.222316][ T72] ipv6_find_idev+0x102/0x170 [ 1864.222316][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.222316][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.222316][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.222316][ T72] netlink_unicast+0x449/0x710 [ 1864.222316][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.222316][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.222316][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.222316][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.222316][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.222316][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.222316][ T72] [ 1864.224395][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1864.224665][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1864.224665][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.224665][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.224665][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.224665][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.224665][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.224665][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.224665][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.224665][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.224665][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.224665][ T72] netlink_unicast+0x449/0x710 [ 1864.224665][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.224665][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.224665][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.224665][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.224665][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.224665][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.224665][ T72] [ 1864.226629][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1864.226629][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.226629][ T72] ipv6_find_idev+0x102/0x170 [ 1864.226629][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.226629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.226629][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.226629][ T72] netlink_unicast+0x449/0x710 [ 1864.226629][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.226629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.226629][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.226629][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.226629][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.226629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.226629][ T72] [ 1864.228134][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1864.228134][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.228134][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.228134][ T72] ipv6_find_idev+0x102/0x170 [ 1864.228134][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.228134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.228134][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.228134][ T72] netlink_unicast+0x449/0x710 [ 1864.228134][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.228134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.228134][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.228134][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.228134][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.228134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.228134][ T72] [ 1864.229824][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1864.230087][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1864.230087][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.230087][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.230087][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.230087][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.230087][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.230087][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.230087][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.230087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.230087][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.230087][ T72] netlink_unicast+0x449/0x710 [ 1864.230087][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.230087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.230087][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.230087][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.230087][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.230087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.230087][ T72] [ 1864.232054][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1864.232054][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.232054][ T72] ipv6_find_idev+0x102/0x170 [ 1864.232054][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.232054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.232054][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.232054][ T72] netlink_unicast+0x449/0x710 [ 1864.232054][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.232054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.232054][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.232054][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.232054][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.232054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.232054][ T72] [ 1864.233592][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1864.233592][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.233592][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.233592][ T72] ipv6_find_idev+0x102/0x170 [ 1864.233592][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.233592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.233592][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.233592][ T72] netlink_unicast+0x449/0x710 [ 1864.233592][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.233592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.233592][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.233592][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.233592][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.233592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.233592][ T72] [ 1864.235284][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1864.235555][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1864.235555][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.235555][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.235555][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.235555][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.235555][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.235555][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.235555][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.235555][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.235555][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.235555][ T72] netlink_unicast+0x449/0x710 [ 1864.235555][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.235555][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.235555][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.235555][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.235555][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.235555][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.235555][ T72] [ 1864.237644][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1864.237644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.237644][ T72] ipv6_find_idev+0x102/0x170 [ 1864.237644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.237644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.237644][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.237644][ T72] netlink_unicast+0x449/0x710 [ 1864.237644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.237644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.237644][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.237644][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.237644][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.237644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.237644][ T72] [ 1864.239396][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1864.239396][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.239396][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.239396][ T72] ipv6_find_idev+0x102/0x170 [ 1864.239396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.239396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.239396][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.239396][ T72] netlink_unicast+0x449/0x710 [ 1864.239396][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.239396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.239396][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.239396][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.239396][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.239396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.239396][ T72] [ 1864.241272][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1864.241533][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1864.241533][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.241533][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.241533][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.241533][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.241533][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.241533][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.241533][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.241533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.241533][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.241533][ T72] netlink_unicast+0x449/0x710 [ 1864.241533][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.241533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.241533][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.241533][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.241533][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.241533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.241533][ T72] [ 1864.243748][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1864.243748][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.243748][ T72] ipv6_find_idev+0x102/0x170 [ 1864.243748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.243748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.243748][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.243748][ T72] netlink_unicast+0x449/0x710 [ 1864.243748][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.243748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.243748][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.243748][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.243748][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.243748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.243748][ T72] [ 1864.245543][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1864.245543][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.245543][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.245543][ T72] ipv6_find_idev+0x102/0x170 [ 1864.245543][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.245543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.245543][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.245543][ T72] netlink_unicast+0x449/0x710 [ 1864.245543][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.245543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.245543][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.245543][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.245543][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.245543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.245543][ T72] [ 1864.247416][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1864.247673][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1864.247673][ T72] netdev_get_by_index+0x5e/0x80 [ 1864.247673][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1864.247673][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1864.247673][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1864.247673][ T72] ipv6_add_addr+0x411/0x2000 [ 1864.247673][ T72] inet6_addr_add+0x30e/0xa40 [ 1864.247673][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1864.247673][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.247673][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.247673][ T72] netlink_unicast+0x449/0x710 [ 1864.247673][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.247673][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.247673][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.247673][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.247673][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.247673][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.247673][ T72] [ 1864.249925][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1864.249925][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1864.249925][ T72] ipv6_find_idev+0x102/0x170 [ 1864.249925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.249925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.249925][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.249925][ T72] netlink_unicast+0x449/0x710 [ 1864.249925][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.249925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.249925][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.249925][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.249925][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.249925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.249925][ T72] [ 1864.251627][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1864.251627][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1864.251627][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1864.251627][ T72] ipv6_find_idev+0x102/0x170 [ 1864.251627][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1864.251627][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1864.251627][ T72] netlink_rcv_skb+0x130/0x360 [ 1864.251627][ T72] netlink_unicast+0x449/0x710 [ 1864.251627][ T72] netlink_sendmsg+0x723/0xbe0 [ 1864.251627][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1864.251627][ T72] ___sys_sendmsg+0xee/0x170 [ 1864.251627][ T72] __sys_sendmsg+0xcd/0x170 [ 1864.251627][ T72] do_syscall_64+0xc6/0x1e0 [ 1864.251627][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1864.251627][ T72] [ 1874.382819][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1874.383293][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1874.383293][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.383293][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.383293][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.383293][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.383293][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.383293][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.383293][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.383293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.383293][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.383293][ T72] netlink_unicast+0x449/0x710 [ 1874.383293][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.383293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.383293][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.383293][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.383293][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.383293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.383293][ T72] [ 1874.385280][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1874.385280][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.385280][ T72] ipv6_find_idev+0x102/0x170 [ 1874.385280][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.385280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.385280][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.385280][ T72] netlink_unicast+0x449/0x710 [ 1874.385280][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.385280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.385280][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.385280][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.385280][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.385280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.385280][ T72] [ 1874.386820][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1874.386820][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.386820][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.386820][ T72] ipv6_find_idev+0x102/0x170 [ 1874.386820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.386820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.386820][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.386820][ T72] netlink_unicast+0x449/0x710 [ 1874.386820][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.386820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.386820][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.386820][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.386820][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.386820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.386820][ T72] [ 1874.388489][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1874.388761][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1874.388761][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.388761][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.388761][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.388761][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.388761][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.388761][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.388761][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.388761][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.388761][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.388761][ T72] netlink_unicast+0x449/0x710 [ 1874.388761][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.388761][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.388761][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.388761][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.388761][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.388761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.388761][ T72] [ 1874.390717][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1874.390717][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.390717][ T72] ipv6_find_idev+0x102/0x170 [ 1874.390717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.390717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.390717][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.390717][ T72] netlink_unicast+0x449/0x710 [ 1874.390717][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.390717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.390717][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.390717][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.390717][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.390717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.390717][ T72] [ 1874.392241][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1874.392241][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.392241][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.392241][ T72] ipv6_find_idev+0x102/0x170 [ 1874.392241][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.392241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.392241][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.392241][ T72] netlink_unicast+0x449/0x710 [ 1874.392241][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.392241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.392241][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.392241][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.392241][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.392241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.392241][ T72] [ 1874.393939][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1874.394204][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1874.394204][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.394204][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.394204][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.394204][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.394204][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.394204][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.394204][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.394204][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.394204][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.394204][ T72] netlink_unicast+0x449/0x710 [ 1874.394204][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.394204][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.394204][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.394204][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.394204][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.394204][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.394204][ T72] [ 1874.396159][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1874.396159][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.396159][ T72] ipv6_find_idev+0x102/0x170 [ 1874.396159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.396159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.396159][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.396159][ T72] netlink_unicast+0x449/0x710 [ 1874.396159][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.396159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.396159][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.396159][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.396159][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.396159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.396159][ T72] [ 1874.397667][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1874.397667][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.397667][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.397667][ T72] ipv6_find_idev+0x102/0x170 [ 1874.397667][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.397667][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.397667][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.397667][ T72] netlink_unicast+0x449/0x710 [ 1874.397667][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.397667][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.397667][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.397667][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.397667][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.397667][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.397667][ T72] [ 1874.399320][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1874.399591][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1874.399591][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.399591][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.399591][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.399591][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.399591][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.399591][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.399591][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.399591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.399591][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.399591][ T72] netlink_unicast+0x449/0x710 [ 1874.399591][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.399591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.399591][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.399591][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.399591][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.399591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.399591][ T72] [ 1874.401554][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1874.401554][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.401554][ T72] ipv6_find_idev+0x102/0x170 [ 1874.401554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.401554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.401554][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.401554][ T72] netlink_unicast+0x449/0x710 [ 1874.401554][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.401554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.401554][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.401554][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.401554][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.401554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.401554][ T72] [ 1874.403073][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1874.403073][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.403073][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.403073][ T72] ipv6_find_idev+0x102/0x170 [ 1874.403073][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.403073][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.403073][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.403073][ T72] netlink_unicast+0x449/0x710 [ 1874.403073][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.403073][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.403073][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.403073][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.403073][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.403073][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.403073][ T72] [ 1874.404746][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1874.405007][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1874.405007][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.405007][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.405007][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.405007][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.405007][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.405007][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.405007][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.405007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.405007][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.405007][ T72] netlink_unicast+0x449/0x710 [ 1874.405007][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.405007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.405007][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.405007][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.405007][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.405007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.405007][ T72] [ 1874.406979][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1874.406979][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.406979][ T72] ipv6_find_idev+0x102/0x170 [ 1874.406979][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.406979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.406979][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.406979][ T72] netlink_unicast+0x449/0x710 [ 1874.406979][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.406979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.406979][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.406979][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.406979][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.406979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.406979][ T72] [ 1874.408554][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1874.408554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.408554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.408554][ T72] ipv6_find_idev+0x102/0x170 [ 1874.408554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.408554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.408554][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.408554][ T72] netlink_unicast+0x449/0x710 [ 1874.408554][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.408554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.408554][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.408554][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.408554][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.408554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.408554][ T72] [ 1874.410507][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1874.410774][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1874.410774][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.410774][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.410774][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.410774][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.410774][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.410774][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.410774][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.410774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.410774][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.410774][ T72] netlink_unicast+0x449/0x710 [ 1874.410774][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.410774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.410774][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.410774][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.410774][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.410774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.410774][ T72] [ 1874.412993][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1874.412993][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.412993][ T72] ipv6_find_idev+0x102/0x170 [ 1874.412993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.412993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.412993][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.412993][ T72] netlink_unicast+0x449/0x710 [ 1874.412993][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.412993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.412993][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.412993][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.412993][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.412993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.412993][ T72] [ 1874.414676][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1874.414676][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.414676][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.414676][ T72] ipv6_find_idev+0x102/0x170 [ 1874.414676][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.414676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.414676][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.414676][ T72] netlink_unicast+0x449/0x710 [ 1874.414676][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.414676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.414676][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.414676][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.414676][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.414676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.414676][ T72] [ 1874.416546][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1874.416861][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1874.416861][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.416861][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.416861][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.416861][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.416861][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.416861][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.416861][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.416861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.416861][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.416861][ T72] netlink_unicast+0x449/0x710 [ 1874.416861][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.416861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.416861][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.416861][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.416861][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.416861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.416861][ T72] [ 1874.418999][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1874.418999][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.418999][ T72] ipv6_find_idev+0x102/0x170 [ 1874.418999][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.418999][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.418999][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.418999][ T72] netlink_unicast+0x449/0x710 [ 1874.418999][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.418999][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.418999][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.418999][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.418999][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.418999][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.418999][ T72] [ 1874.420743][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1874.420743][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.420743][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.420743][ T72] ipv6_find_idev+0x102/0x170 [ 1874.420743][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.420743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.420743][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.420743][ T72] netlink_unicast+0x449/0x710 [ 1874.420743][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.420743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.420743][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.420743][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.420743][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.420743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.420743][ T72] [ 1874.422612][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1874.422920][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1874.422920][ T72] netdev_get_by_index+0x5e/0x80 [ 1874.422920][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1874.422920][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1874.422920][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1874.422920][ T72] ipv6_add_addr+0x411/0x2000 [ 1874.422920][ T72] inet6_addr_add+0x30e/0xa40 [ 1874.422920][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1874.422920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.422920][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.422920][ T72] netlink_unicast+0x449/0x710 [ 1874.422920][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.422920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.422920][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.422920][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.422920][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.422920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.422920][ T72] [ 1874.425059][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1874.425059][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1874.425059][ T72] ipv6_find_idev+0x102/0x170 [ 1874.425059][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.425059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.425059][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.425059][ T72] netlink_unicast+0x449/0x710 [ 1874.425059][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.425059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.425059][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.425059][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.425059][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.425059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.425059][ T72] [ 1874.426748][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1874.426748][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1874.426748][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1874.426748][ T72] ipv6_find_idev+0x102/0x170 [ 1874.426748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1874.426748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1874.426748][ T72] netlink_rcv_skb+0x130/0x360 [ 1874.426748][ T72] netlink_unicast+0x449/0x710 [ 1874.426748][ T72] netlink_sendmsg+0x723/0xbe0 [ 1874.426748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1874.426748][ T72] ___sys_sendmsg+0xee/0x170 [ 1874.426748][ T72] __sys_sendmsg+0xcd/0x170 [ 1874.426748][ T72] do_syscall_64+0xc6/0x1e0 [ 1874.426748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1874.426748][ T72] [ 1884.654806][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1884.655208][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1884.655208][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.655208][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.655208][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.655208][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.655208][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.655208][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.655208][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.655208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.655208][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.655208][ T72] netlink_unicast+0x449/0x710 [ 1884.655208][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.655208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.655208][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.655208][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.655208][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.655208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.655208][ T72] [ 1884.657213][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1884.657213][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.657213][ T72] ipv6_find_idev+0x102/0x170 [ 1884.657213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.657213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.657213][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.657213][ T72] netlink_unicast+0x449/0x710 [ 1884.657213][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.657213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.657213][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.657213][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.657213][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.657213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.657213][ T72] [ 1884.658743][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1884.658743][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.658743][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.658743][ T72] ipv6_find_idev+0x102/0x170 [ 1884.658743][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.658743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.658743][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.658743][ T72] netlink_unicast+0x449/0x710 [ 1884.658743][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.658743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.658743][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.658743][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.658743][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.658743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.658743][ T72] [ 1884.660430][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1884.660712][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1884.660712][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.660712][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.660712][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.660712][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.660712][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.660712][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.660712][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.660712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.660712][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.660712][ T72] netlink_unicast+0x449/0x710 [ 1884.660712][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.660712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.660712][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.660712][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.660712][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.660712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.660712][ T72] [ 1884.662742][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1884.662742][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.662742][ T72] ipv6_find_idev+0x102/0x170 [ 1884.662742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.662742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.662742][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.662742][ T72] netlink_unicast+0x449/0x710 [ 1884.662742][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.662742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.662742][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.662742][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.662742][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.662742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.662742][ T72] [ 1884.664264][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1884.664264][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.664264][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.664264][ T72] ipv6_find_idev+0x102/0x170 [ 1884.664264][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.664264][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.664264][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.664264][ T72] netlink_unicast+0x449/0x710 [ 1884.664264][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.664264][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.664264][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.664264][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.664264][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.664264][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.664264][ T72] [ 1884.665936][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1884.666200][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1884.666200][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.666200][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.666200][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.666200][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.666200][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.666200][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.666200][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.666200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.666200][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.666200][ T72] netlink_unicast+0x449/0x710 [ 1884.666200][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.666200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.666200][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.666200][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.666200][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.666200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.666200][ T72] [ 1884.668216][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1884.668216][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.668216][ T72] ipv6_find_idev+0x102/0x170 [ 1884.668216][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.668216][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.668216][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.668216][ T72] netlink_unicast+0x449/0x710 [ 1884.668216][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.668216][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.668216][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.668216][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.668216][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.668216][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.668216][ T72] [ 1884.669746][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1884.669746][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.669746][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.669746][ T72] ipv6_find_idev+0x102/0x170 [ 1884.669746][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.669746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.669746][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.669746][ T72] netlink_unicast+0x449/0x710 [ 1884.669746][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.669746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.669746][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.669746][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.669746][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.669746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.669746][ T72] [ 1884.671417][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1884.671685][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1884.671685][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.671685][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.671685][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.671685][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.671685][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.671685][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.671685][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.671685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.671685][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.671685][ T72] netlink_unicast+0x449/0x710 [ 1884.671685][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.671685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.671685][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.671685][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.671685][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.671685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.671685][ T72] [ 1884.673690][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1884.673690][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.673690][ T72] ipv6_find_idev+0x102/0x170 [ 1884.673690][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.673690][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.673690][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.673690][ T72] netlink_unicast+0x449/0x710 [ 1884.673690][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.673690][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.673690][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.673690][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.673690][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.673690][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.673690][ T72] [ 1884.675248][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1884.675248][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.675248][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.675248][ T72] ipv6_find_idev+0x102/0x170 [ 1884.675248][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.675248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.675248][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.675248][ T72] netlink_unicast+0x449/0x710 [ 1884.675248][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.675248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.675248][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.675248][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.675248][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.675248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.675248][ T72] [ 1884.677354][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1884.677617][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1884.677617][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.677617][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.677617][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.677617][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.677617][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.677617][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.677617][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.677617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.677617][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.677617][ T72] netlink_unicast+0x449/0x710 [ 1884.677617][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.677617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.677617][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.677617][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.677617][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.677617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.677617][ T72] [ 1884.679569][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1884.679569][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.679569][ T72] ipv6_find_idev+0x102/0x170 [ 1884.679569][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.679569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.679569][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.679569][ T72] netlink_unicast+0x449/0x710 [ 1884.679569][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.679569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.679569][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.679569][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.679569][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.679569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.679569][ T72] [ 1884.681076][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1884.681076][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.681076][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.681076][ T72] ipv6_find_idev+0x102/0x170 [ 1884.681076][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.681076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.681076][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.681076][ T72] netlink_unicast+0x449/0x710 [ 1884.681076][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.681076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.681076][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.681076][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.681076][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.681076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.681076][ T72] [ 1884.682802][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1884.683061][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1884.683061][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.683061][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.683061][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.683061][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.683061][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.683061][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.683061][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.683061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.683061][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.683061][ T72] netlink_unicast+0x449/0x710 [ 1884.683061][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.683061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.683061][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.683061][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.683061][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.683061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.683061][ T72] [ 1884.685094][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1884.685094][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.685094][ T72] ipv6_find_idev+0x102/0x170 [ 1884.685094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.685094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.685094][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.685094][ T72] netlink_unicast+0x449/0x710 [ 1884.685094][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.685094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.685094][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.685094][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.685094][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.685094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.685094][ T72] [ 1884.687269][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1884.687269][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.687269][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.687269][ T72] ipv6_find_idev+0x102/0x170 [ 1884.687269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.687269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.687269][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.687269][ T72] netlink_unicast+0x449/0x710 [ 1884.687269][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.687269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.687269][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.687269][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.687269][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.687269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.687269][ T72] [ 1884.689097][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1884.689359][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1884.689359][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.689359][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.689359][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.689359][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.689359][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.689359][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.689359][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.689359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.689359][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.689359][ T72] netlink_unicast+0x449/0x710 [ 1884.689359][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.689359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.689359][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.689359][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.689359][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.689359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.689359][ T72] [ 1884.691474][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1884.691474][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.691474][ T72] ipv6_find_idev+0x102/0x170 [ 1884.691474][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.691474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.691474][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.691474][ T72] netlink_unicast+0x449/0x710 [ 1884.691474][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.691474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.691474][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.691474][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.691474][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.691474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.691474][ T72] [ 1884.693059][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1884.693059][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.693059][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.693059][ T72] ipv6_find_idev+0x102/0x170 [ 1884.693059][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.693059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.693059][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.693059][ T72] netlink_unicast+0x449/0x710 [ 1884.693059][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.693059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.693059][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.693059][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.693059][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.693059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.693059][ T72] [ 1884.694886][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1884.695157][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1884.695157][ T72] netdev_get_by_index+0x5e/0x80 [ 1884.695157][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1884.695157][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1884.695157][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1884.695157][ T72] ipv6_add_addr+0x411/0x2000 [ 1884.695157][ T72] inet6_addr_add+0x30e/0xa40 [ 1884.695157][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1884.695157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.695157][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.695157][ T72] netlink_unicast+0x449/0x710 [ 1884.695157][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.695157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.695157][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.695157][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.695157][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.695157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.695157][ T72] [ 1884.697249][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1884.697249][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1884.697249][ T72] ipv6_find_idev+0x102/0x170 [ 1884.697249][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.697249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.697249][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.697249][ T72] netlink_unicast+0x449/0x710 [ 1884.697249][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.697249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.697249][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.697249][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.697249][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.697249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.697249][ T72] [ 1884.698829][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1884.698829][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1884.698829][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1884.698829][ T72] ipv6_find_idev+0x102/0x170 [ 1884.698829][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1884.698829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1884.698829][ T72] netlink_rcv_skb+0x130/0x360 [ 1884.698829][ T72] netlink_unicast+0x449/0x710 [ 1884.698829][ T72] netlink_sendmsg+0x723/0xbe0 [ 1884.698829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1884.698829][ T72] ___sys_sendmsg+0xee/0x170 [ 1884.698829][ T72] __sys_sendmsg+0xcd/0x170 [ 1884.698829][ T72] do_syscall_64+0xc6/0x1e0 [ 1884.698829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1884.698829][ T72] [ 1894.942881][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1894.943292][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1894.943292][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.943292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.943292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.943292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.943292][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.943292][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.943292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.943292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.943292][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.943292][ T72] netlink_unicast+0x449/0x710 [ 1894.943292][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.943292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.943292][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.943292][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.943292][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.943292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.943292][ T72] [ 1894.945288][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1894.945288][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.945288][ T72] ipv6_find_idev+0x102/0x170 [ 1894.945288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.945288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.945288][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.945288][ T72] netlink_unicast+0x449/0x710 [ 1894.945288][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.945288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.945288][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.945288][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.945288][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.945288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.945288][ T72] [ 1894.946808][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1894.946808][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.946808][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.946808][ T72] ipv6_find_idev+0x102/0x170 [ 1894.946808][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.946808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.946808][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.946808][ T72] netlink_unicast+0x449/0x710 [ 1894.946808][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.946808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.946808][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.946808][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.946808][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.946808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.946808][ T72] [ 1894.948490][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1894.948768][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1894.948768][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.948768][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.948768][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.948768][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.948768][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.948768][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.948768][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.948768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.948768][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.948768][ T72] netlink_unicast+0x449/0x710 [ 1894.948768][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.948768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.948768][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.948768][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.948768][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.948768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.948768][ T72] [ 1894.950733][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1894.950733][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.950733][ T72] ipv6_find_idev+0x102/0x170 [ 1894.950733][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.950733][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.950733][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.950733][ T72] netlink_unicast+0x449/0x710 [ 1894.950733][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.950733][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.950733][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.950733][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.950733][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.950733][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.950733][ T72] [ 1894.952264][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1894.952264][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.952264][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.952264][ T72] ipv6_find_idev+0x102/0x170 [ 1894.952264][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.952264][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.952264][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.952264][ T72] netlink_unicast+0x449/0x710 [ 1894.952264][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.952264][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.952264][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.952264][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.952264][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.952264][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.952264][ T72] [ 1894.953908][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1894.954173][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1894.954173][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.954173][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.954173][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.954173][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.954173][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.954173][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.954173][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.954173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.954173][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.954173][ T72] netlink_unicast+0x449/0x710 [ 1894.954173][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.954173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.954173][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.954173][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.954173][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.954173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.954173][ T72] [ 1894.956141][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1894.956141][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.956141][ T72] ipv6_find_idev+0x102/0x170 [ 1894.956141][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.956141][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.956141][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.956141][ T72] netlink_unicast+0x449/0x710 [ 1894.956141][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.956141][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.956141][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.956141][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.956141][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.956141][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.956141][ T72] [ 1894.957659][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1894.957659][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.957659][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.957659][ T72] ipv6_find_idev+0x102/0x170 [ 1894.957659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.957659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.957659][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.957659][ T72] netlink_unicast+0x449/0x710 [ 1894.957659][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.957659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.957659][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.957659][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.957659][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.957659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.957659][ T72] [ 1894.959327][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1894.959593][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1894.959593][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.959593][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.959593][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.959593][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.959593][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.959593][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.959593][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.959593][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.959593][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.959593][ T72] netlink_unicast+0x449/0x710 [ 1894.959593][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.959593][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.959593][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.959593][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.959593][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.959593][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.959593][ T72] [ 1894.961591][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1894.961591][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.961591][ T72] ipv6_find_idev+0x102/0x170 [ 1894.961591][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.961591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.961591][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.961591][ T72] netlink_unicast+0x449/0x710 [ 1894.961591][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.961591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.961591][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.961591][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.961591][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.961591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.961591][ T72] [ 1894.963129][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1894.963129][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.963129][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.963129][ T72] ipv6_find_idev+0x102/0x170 [ 1894.963129][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.963129][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.963129][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.963129][ T72] netlink_unicast+0x449/0x710 [ 1894.963129][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.963129][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.963129][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.963129][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.963129][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.963129][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.963129][ T72] [ 1894.964798][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1894.965062][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1894.965062][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.965062][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.965062][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.965062][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.965062][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.965062][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.965062][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.965062][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.965062][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.965062][ T72] netlink_unicast+0x449/0x710 [ 1894.965062][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.965062][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.965062][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.965062][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.965062][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.965062][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.965062][ T72] [ 1894.967047][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1894.967047][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.967047][ T72] ipv6_find_idev+0x102/0x170 [ 1894.967047][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.967047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.967047][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.967047][ T72] netlink_unicast+0x449/0x710 [ 1894.967047][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.967047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.967047][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.967047][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.967047][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.967047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.967047][ T72] [ 1894.968644][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1894.968644][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.968644][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.968644][ T72] ipv6_find_idev+0x102/0x170 [ 1894.968644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.968644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.968644][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.968644][ T72] netlink_unicast+0x449/0x710 [ 1894.968644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.968644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.968644][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.968644][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.968644][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.968644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.968644][ T72] [ 1894.970675][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1894.970990][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1894.970990][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.970990][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.970990][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.970990][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.970990][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.970990][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.970990][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.970990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.970990][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.970990][ T72] netlink_unicast+0x449/0x710 [ 1894.970990][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.970990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.970990][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.970990][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.970990][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.970990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.970990][ T72] [ 1894.973147][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1894.973147][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.973147][ T72] ipv6_find_idev+0x102/0x170 [ 1894.973147][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.973147][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.973147][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.973147][ T72] netlink_unicast+0x449/0x710 [ 1894.973147][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.973147][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.973147][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.973147][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.973147][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.973147][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.973147][ T72] [ 1894.975403][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1894.975403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.975403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.975403][ T72] ipv6_find_idev+0x102/0x170 [ 1894.975403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.975403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.975403][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.975403][ T72] netlink_unicast+0x449/0x710 [ 1894.975403][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.975403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.975403][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.975403][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.975403][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.975403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.975403][ T72] [ 1894.977285][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1894.977545][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1894.977545][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.977545][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.977545][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.977545][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.977545][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.977545][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.977545][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.977545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.977545][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.977545][ T72] netlink_unicast+0x449/0x710 [ 1894.977545][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.977545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.977545][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.977545][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.977545][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.977545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.977545][ T72] [ 1894.979747][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1894.979747][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.979747][ T72] ipv6_find_idev+0x102/0x170 [ 1894.979747][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.979747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.979747][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.979747][ T72] netlink_unicast+0x449/0x710 [ 1894.979747][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.979747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.979747][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.979747][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.979747][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.979747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.979747][ T72] [ 1894.981504][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1894.981504][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.981504][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.981504][ T72] ipv6_find_idev+0x102/0x170 [ 1894.981504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.981504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.981504][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.981504][ T72] netlink_unicast+0x449/0x710 [ 1894.981504][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.981504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.981504][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.981504][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.981504][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.981504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.981504][ T72] [ 1894.983394][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1894.983656][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1894.983656][ T72] netdev_get_by_index+0x5e/0x80 [ 1894.983656][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1894.983656][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1894.983656][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1894.983656][ T72] ipv6_add_addr+0x411/0x2000 [ 1894.983656][ T72] inet6_addr_add+0x30e/0xa40 [ 1894.983656][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1894.983656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.983656][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.983656][ T72] netlink_unicast+0x449/0x710 [ 1894.983656][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.983656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.983656][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.983656][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.983656][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.983656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.983656][ T72] [ 1894.985812][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1894.985812][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1894.985812][ T72] ipv6_find_idev+0x102/0x170 [ 1894.985812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.985812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.985812][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.985812][ T72] netlink_unicast+0x449/0x710 [ 1894.985812][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.985812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.985812][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.985812][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.985812][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.985812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.985812][ T72] [ 1894.987501][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1894.987501][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1894.987501][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1894.987501][ T72] ipv6_find_idev+0x102/0x170 [ 1894.987501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1894.987501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1894.987501][ T72] netlink_rcv_skb+0x130/0x360 [ 1894.987501][ T72] netlink_unicast+0x449/0x710 [ 1894.987501][ T72] netlink_sendmsg+0x723/0xbe0 [ 1894.987501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1894.987501][ T72] ___sys_sendmsg+0xee/0x170 [ 1894.987501][ T72] __sys_sendmsg+0xcd/0x170 [ 1894.987501][ T72] do_syscall_64+0xc6/0x1e0 [ 1894.987501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1894.987501][ T72] [ 1905.150870][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1905.151365][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1905.151365][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.151365][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.151365][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.151365][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.151365][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.151365][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.151365][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.151365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.151365][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.151365][ T72] netlink_unicast+0x449/0x710 [ 1905.151365][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.151365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.151365][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.151365][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.151365][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.151365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.151365][ T72] [ 1905.153492][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1905.153492][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.153492][ T72] ipv6_find_idev+0x102/0x170 [ 1905.153492][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.153492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.153492][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.153492][ T72] netlink_unicast+0x449/0x710 [ 1905.153492][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.153492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.153492][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.153492][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.153492][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.153492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.153492][ T72] [ 1905.155101][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1905.155101][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.155101][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.155101][ T72] ipv6_find_idev+0x102/0x170 [ 1905.155101][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.155101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.155101][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.155101][ T72] netlink_unicast+0x449/0x710 [ 1905.155101][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.155101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.155101][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.155101][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.155101][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.155101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.155101][ T72] [ 1905.156807][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1905.157105][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1905.157105][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.157105][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.157105][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.157105][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.157105][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.157105][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.157105][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.157105][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.157105][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.157105][ T72] netlink_unicast+0x449/0x710 [ 1905.157105][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.157105][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.157105][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.157105][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.157105][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.157105][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.157105][ T72] [ 1905.159157][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1905.159157][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.159157][ T72] ipv6_find_idev+0x102/0x170 [ 1905.159157][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.159157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.159157][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.159157][ T72] netlink_unicast+0x449/0x710 [ 1905.159157][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.159157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.159157][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.159157][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.159157][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.159157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.159157][ T72] [ 1905.160730][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1905.160730][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.160730][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.160730][ T72] ipv6_find_idev+0x102/0x170 [ 1905.160730][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.160730][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.160730][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.160730][ T72] netlink_unicast+0x449/0x710 [ 1905.160730][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.160730][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.160730][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.160730][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.160730][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.160730][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.160730][ T72] [ 1905.162410][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1905.162681][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1905.162681][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.162681][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.162681][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.162681][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.162681][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.162681][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.162681][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.162681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.162681][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.162681][ T72] netlink_unicast+0x449/0x710 [ 1905.162681][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.162681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.162681][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.162681][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.162681][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.162681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.162681][ T72] [ 1905.164644][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1905.164644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.164644][ T72] ipv6_find_idev+0x102/0x170 [ 1905.164644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.164644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.164644][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.164644][ T72] netlink_unicast+0x449/0x710 [ 1905.164644][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.164644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.164644][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.164644][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.164644][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.164644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.164644][ T72] [ 1905.166159][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1905.166159][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.166159][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.166159][ T72] ipv6_find_idev+0x102/0x170 [ 1905.166159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.166159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.166159][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.166159][ T72] netlink_unicast+0x449/0x710 [ 1905.166159][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.166159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.166159][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.166159][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.166159][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.166159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.166159][ T72] [ 1905.167824][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1905.168085][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1905.168085][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.168085][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.168085][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.168085][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.168085][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.168085][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.168085][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.168085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.168085][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.168085][ T72] netlink_unicast+0x449/0x710 [ 1905.168085][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.168085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.168085][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.168085][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.168085][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.168085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.168085][ T72] [ 1905.170046][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1905.170046][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.170046][ T72] ipv6_find_idev+0x102/0x170 [ 1905.170046][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.170046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.170046][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.170046][ T72] netlink_unicast+0x449/0x710 [ 1905.170046][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.170046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.170046][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.170046][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.170046][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.170046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.170046][ T72] [ 1905.171567][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1905.171567][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.171567][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.171567][ T72] ipv6_find_idev+0x102/0x170 [ 1905.171567][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.171567][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.171567][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.171567][ T72] netlink_unicast+0x449/0x710 [ 1905.171567][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.171567][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.171567][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.171567][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.171567][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.171567][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.171567][ T72] [ 1905.173322][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1905.173584][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1905.173584][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.173584][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.173584][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.173584][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.173584][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.173584][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.173584][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.173584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.173584][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.173584][ T72] netlink_unicast+0x449/0x710 [ 1905.173584][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.173584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.173584][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.173584][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.173584][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.173584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.173584][ T72] [ 1905.175691][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1905.175691][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.175691][ T72] ipv6_find_idev+0x102/0x170 [ 1905.175691][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.175691][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.175691][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.175691][ T72] netlink_unicast+0x449/0x710 [ 1905.175691][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.175691][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.175691][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.175691][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.175691][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.175691][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.175691][ T72] [ 1905.177209][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1905.177209][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.177209][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.177209][ T72] ipv6_find_idev+0x102/0x170 [ 1905.177209][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.177209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.177209][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.177209][ T72] netlink_unicast+0x449/0x710 [ 1905.177209][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.177209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.177209][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.177209][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.177209][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.177209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.177209][ T72] [ 1905.179185][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1905.179445][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1905.179445][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.179445][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.179445][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.179445][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.179445][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.179445][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.179445][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.179445][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.179445][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.179445][ T72] netlink_unicast+0x449/0x710 [ 1905.179445][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.179445][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.179445][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.179445][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.179445][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.179445][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.179445][ T72] [ 1905.181669][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1905.181669][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.181669][ T72] ipv6_find_idev+0x102/0x170 [ 1905.181669][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.181669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.181669][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.181669][ T72] netlink_unicast+0x449/0x710 [ 1905.181669][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.181669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.181669][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.181669][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.181669][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.181669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.181669][ T72] [ 1905.183362][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1905.183362][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.183362][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.183362][ T72] ipv6_find_idev+0x102/0x170 [ 1905.183362][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.183362][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.183362][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.183362][ T72] netlink_unicast+0x449/0x710 [ 1905.183362][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.183362][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.183362][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.183362][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.183362][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.183362][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.183362][ T72] [ 1905.185228][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1905.185484][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1905.185484][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.185484][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.185484][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.185484][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.185484][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.185484][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.185484][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.185484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.185484][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.185484][ T72] netlink_unicast+0x449/0x710 [ 1905.185484][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.185484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.185484][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.185484][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.185484][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.185484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.185484][ T72] [ 1905.187676][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1905.187676][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.187676][ T72] ipv6_find_idev+0x102/0x170 [ 1905.187676][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.187676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.187676][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.187676][ T72] netlink_unicast+0x449/0x710 [ 1905.187676][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.187676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.187676][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.187676][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.187676][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.187676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.187676][ T72] [ 1905.189422][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1905.189422][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.189422][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.189422][ T72] ipv6_find_idev+0x102/0x170 [ 1905.189422][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.189422][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.189422][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.189422][ T72] netlink_unicast+0x449/0x710 [ 1905.189422][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.189422][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.189422][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.189422][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.189422][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.189422][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.189422][ T72] [ 1905.191287][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1905.191547][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1905.191547][ T72] netdev_get_by_index+0x5e/0x80 [ 1905.191547][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1905.191547][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1905.191547][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1905.191547][ T72] ipv6_add_addr+0x411/0x2000 [ 1905.191547][ T72] inet6_addr_add+0x30e/0xa40 [ 1905.191547][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1905.191547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.191547][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.191547][ T72] netlink_unicast+0x449/0x710 [ 1905.191547][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.191547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.191547][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.191547][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.191547][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.191547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.191547][ T72] [ 1905.193688][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1905.193688][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1905.193688][ T72] ipv6_find_idev+0x102/0x170 [ 1905.193688][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.193688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.193688][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.193688][ T72] netlink_unicast+0x449/0x710 [ 1905.193688][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.193688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.193688][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.193688][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.193688][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.193688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.193688][ T72] [ 1905.195460][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1905.195460][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1905.195460][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1905.195460][ T72] ipv6_find_idev+0x102/0x170 [ 1905.195460][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1905.195460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1905.195460][ T72] netlink_rcv_skb+0x130/0x360 [ 1905.195460][ T72] netlink_unicast+0x449/0x710 [ 1905.195460][ T72] netlink_sendmsg+0x723/0xbe0 [ 1905.195460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1905.195460][ T72] ___sys_sendmsg+0xee/0x170 [ 1905.195460][ T72] __sys_sendmsg+0xcd/0x170 [ 1905.195460][ T72] do_syscall_64+0xc6/0x1e0 [ 1905.195460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1905.195460][ T72] [ 1915.422838][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1915.423269][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1915.423269][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.423269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.423269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.423269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.423269][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.423269][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.423269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.423269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.423269][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.423269][ T72] netlink_unicast+0x449/0x710 [ 1915.423269][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.423269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.423269][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.423269][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.423269][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.423269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.423269][ T72] [ 1915.425298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1915.425298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.425298][ T72] ipv6_find_idev+0x102/0x170 [ 1915.425298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.425298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.425298][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.425298][ T72] netlink_unicast+0x449/0x710 [ 1915.425298][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.425298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.425298][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.425298][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.425298][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.425298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.425298][ T72] [ 1915.426868][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1915.426868][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.426868][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.426868][ T72] ipv6_find_idev+0x102/0x170 [ 1915.426868][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.426868][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.426868][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.426868][ T72] netlink_unicast+0x449/0x710 [ 1915.426868][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.426868][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.426868][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.426868][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.426868][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.426868][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.426868][ T72] [ 1915.428611][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1915.428909][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1915.428909][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.428909][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.428909][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.428909][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.428909][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.428909][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.428909][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.428909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.428909][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.428909][ T72] netlink_unicast+0x449/0x710 [ 1915.428909][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.428909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.428909][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.428909][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.428909][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.428909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.428909][ T72] [ 1915.430933][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1915.430933][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.430933][ T72] ipv6_find_idev+0x102/0x170 [ 1915.430933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.430933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.430933][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.430933][ T72] netlink_unicast+0x449/0x710 [ 1915.430933][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.430933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.430933][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.430933][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.430933][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.430933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.430933][ T72] [ 1915.432531][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1915.432531][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.432531][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.432531][ T72] ipv6_find_idev+0x102/0x170 [ 1915.432531][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.432531][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.432531][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.432531][ T72] netlink_unicast+0x449/0x710 [ 1915.432531][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.432531][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.432531][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.432531][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.432531][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.432531][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.432531][ T72] [ 1915.434231][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1915.434502][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1915.434502][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.434502][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.434502][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.434502][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.434502][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.434502][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.434502][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.434502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.434502][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.434502][ T72] netlink_unicast+0x449/0x710 [ 1915.434502][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.434502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.434502][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.434502][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.434502][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.434502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.434502][ T72] [ 1915.436544][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1915.436544][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.436544][ T72] ipv6_find_idev+0x102/0x170 [ 1915.436544][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.436544][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.436544][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.436544][ T72] netlink_unicast+0x449/0x710 [ 1915.436544][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.436544][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.436544][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.436544][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.436544][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.436544][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.436544][ T72] [ 1915.438130][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1915.438130][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.438130][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.438130][ T72] ipv6_find_idev+0x102/0x170 [ 1915.438130][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.438130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.438130][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.438130][ T72] netlink_unicast+0x449/0x710 [ 1915.438130][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.438130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.438130][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.438130][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.438130][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.438130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.438130][ T72] [ 1915.439851][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1915.440134][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1915.440134][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.440134][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.440134][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.440134][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.440134][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.440134][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.440134][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.440134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.440134][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.440134][ T72] netlink_unicast+0x449/0x710 [ 1915.440134][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.440134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.440134][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.440134][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.440134][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.440134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.440134][ T72] [ 1915.442169][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1915.442169][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.442169][ T72] ipv6_find_idev+0x102/0x170 [ 1915.442169][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.442169][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.442169][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.442169][ T72] netlink_unicast+0x449/0x710 [ 1915.442169][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.442169][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.442169][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.442169][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.442169][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.442169][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.442169][ T72] [ 1915.443705][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1915.443705][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.443705][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.443705][ T72] ipv6_find_idev+0x102/0x170 [ 1915.443705][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.443705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.443705][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.443705][ T72] netlink_unicast+0x449/0x710 [ 1915.443705][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.443705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.443705][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.443705][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.443705][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.443705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.443705][ T72] [ 1915.445804][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1915.446399][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1915.446399][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.446399][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.446399][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.446399][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.446399][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.446399][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.446399][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.446399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.446399][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.446399][ T72] netlink_unicast+0x449/0x710 [ 1915.446399][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.446399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.446399][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.446399][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.446399][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.446399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.446399][ T72] [ 1915.448382][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1915.448382][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.448382][ T72] ipv6_find_idev+0x102/0x170 [ 1915.448382][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.448382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.448382][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.448382][ T72] netlink_unicast+0x449/0x710 [ 1915.448382][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.448382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.448382][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.448382][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.448382][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.448382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.448382][ T72] [ 1915.449956][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1915.449956][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.449956][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.449956][ T72] ipv6_find_idev+0x102/0x170 [ 1915.449956][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.449956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.449956][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.449956][ T72] netlink_unicast+0x449/0x710 [ 1915.449956][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.449956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.449956][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.449956][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.449956][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.449956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.449956][ T72] [ 1915.451677][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1915.452002][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1915.452002][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.452002][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.452002][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.452002][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.452002][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.452002][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.452002][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.452002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.452002][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.452002][ T72] netlink_unicast+0x449/0x710 [ 1915.452002][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.452002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.452002][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.452002][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.452002][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.452002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.452002][ T72] [ 1915.454017][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1915.454017][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.454017][ T72] ipv6_find_idev+0x102/0x170 [ 1915.454017][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.454017][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.454017][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.454017][ T72] netlink_unicast+0x449/0x710 [ 1915.454017][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.454017][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.454017][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.454017][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.454017][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.454017][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.454017][ T72] [ 1915.455592][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1915.455592][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.455592][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.455592][ T72] ipv6_find_idev+0x102/0x170 [ 1915.455592][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.455592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.455592][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.455592][ T72] netlink_unicast+0x449/0x710 [ 1915.455592][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.455592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.455592][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.455592][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.455592][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.455592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.455592][ T72] [ 1915.457571][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1915.457894][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1915.457894][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.457894][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.457894][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.457894][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.457894][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.457894][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.457894][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.457894][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.457894][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.457894][ T72] netlink_unicast+0x449/0x710 [ 1915.457894][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.457894][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.457894][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.457894][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.457894][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.457894][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.457894][ T72] [ 1915.460121][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1915.460121][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.460121][ T72] ipv6_find_idev+0x102/0x170 [ 1915.460121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.460121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.460121][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.460121][ T72] netlink_unicast+0x449/0x710 [ 1915.460121][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.460121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.460121][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.460121][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.460121][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.460121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.460121][ T72] [ 1915.461841][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1915.461841][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.461841][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.461841][ T72] ipv6_find_idev+0x102/0x170 [ 1915.461841][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.461841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.461841][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.461841][ T72] netlink_unicast+0x449/0x710 [ 1915.461841][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.461841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.461841][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.461841][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.461841][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.461841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.461841][ T72] [ 1915.463777][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1915.464092][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1915.464092][ T72] netdev_get_by_index+0x5e/0x80 [ 1915.464092][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1915.464092][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1915.464092][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1915.464092][ T72] ipv6_add_addr+0x411/0x2000 [ 1915.464092][ T72] inet6_addr_add+0x30e/0xa40 [ 1915.464092][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1915.464092][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.464092][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.464092][ T72] netlink_unicast+0x449/0x710 [ 1915.464092][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.464092][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.464092][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.464092][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.464092][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.464092][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.464092][ T72] [ 1915.466293][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1915.466293][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1915.466293][ T72] ipv6_find_idev+0x102/0x170 [ 1915.466293][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.466293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.466293][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.466293][ T72] netlink_unicast+0x449/0x710 [ 1915.466293][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.466293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.466293][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.466293][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.466293][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.466293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.466293][ T72] [ 1915.468075][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1915.468075][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1915.468075][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1915.468075][ T72] ipv6_find_idev+0x102/0x170 [ 1915.468075][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1915.468075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1915.468075][ T72] netlink_rcv_skb+0x130/0x360 [ 1915.468075][ T72] netlink_unicast+0x449/0x710 [ 1915.468075][ T72] netlink_sendmsg+0x723/0xbe0 [ 1915.468075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1915.468075][ T72] ___sys_sendmsg+0xee/0x170 [ 1915.468075][ T72] __sys_sendmsg+0xcd/0x170 [ 1915.468075][ T72] do_syscall_64+0xc6/0x1e0 [ 1915.468075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1915.468075][ T72] [ 1925.710852][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1925.711310][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1925.711310][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.711310][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.711310][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.711310][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.711310][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.711310][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.711310][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.711310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.711310][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.711310][ T72] netlink_unicast+0x449/0x710 [ 1925.711310][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.711310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.711310][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.711310][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.711310][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.711310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.711310][ T72] [ 1925.713406][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1925.713406][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.713406][ T72] ipv6_find_idev+0x102/0x170 [ 1925.713406][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.713406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.713406][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.713406][ T72] netlink_unicast+0x449/0x710 [ 1925.713406][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.713406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.713406][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.713406][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.713406][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.713406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.713406][ T72] [ 1925.714951][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1925.714951][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.714951][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.714951][ T72] ipv6_find_idev+0x102/0x170 [ 1925.714951][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.714951][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.714951][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.714951][ T72] netlink_unicast+0x449/0x710 [ 1925.714951][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.714951][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.714951][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.714951][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.714951][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.714951][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.714951][ T72] [ 1925.716689][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1925.716978][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1925.716978][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.716978][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.716978][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.716978][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.716978][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.716978][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.716978][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.716978][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.716978][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.716978][ T72] netlink_unicast+0x449/0x710 [ 1925.716978][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.716978][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.716978][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.716978][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.716978][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.716978][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.716978][ T72] [ 1925.718965][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1925.718965][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.718965][ T72] ipv6_find_idev+0x102/0x170 [ 1925.718965][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.718965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.718965][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.718965][ T72] netlink_unicast+0x449/0x710 [ 1925.718965][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.718965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.718965][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.718965][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.718965][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.718965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.718965][ T72] [ 1925.720531][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1925.720531][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.720531][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.720531][ T72] ipv6_find_idev+0x102/0x170 [ 1925.720531][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.720531][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.720531][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.720531][ T72] netlink_unicast+0x449/0x710 [ 1925.720531][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.720531][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.720531][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.720531][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.720531][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.720531][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.720531][ T72] [ 1925.722263][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1925.722540][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1925.722540][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.722540][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.722540][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.722540][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.722540][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.722540][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.722540][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.722540][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.722540][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.722540][ T72] netlink_unicast+0x449/0x710 [ 1925.722540][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.722540][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.722540][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.722540][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.722540][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.722540][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.722540][ T72] [ 1925.724710][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1925.724710][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.724710][ T72] ipv6_find_idev+0x102/0x170 [ 1925.724710][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.724710][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.724710][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.724710][ T72] netlink_unicast+0x449/0x710 [ 1925.724710][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.724710][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.724710][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.724710][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.724710][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.724710][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.724710][ T72] [ 1925.726395][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1925.726395][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.726395][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.726395][ T72] ipv6_find_idev+0x102/0x170 [ 1925.726395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.726395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.726395][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.726395][ T72] netlink_unicast+0x449/0x710 [ 1925.726395][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.726395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.726395][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.726395][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.726395][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.726395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.726395][ T72] [ 1925.728254][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1925.728551][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1925.728551][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.728551][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.728551][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.728551][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.728551][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.728551][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.728551][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.728551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.728551][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.728551][ T72] netlink_unicast+0x449/0x710 [ 1925.728551][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.728551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.728551][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.728551][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.728551][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.728551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.728551][ T72] [ 1925.730744][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1925.730744][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.730744][ T72] ipv6_find_idev+0x102/0x170 [ 1925.730744][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.730744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.730744][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.730744][ T72] netlink_unicast+0x449/0x710 [ 1925.730744][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.730744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.730744][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.730744][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.730744][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.730744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.730744][ T72] [ 1925.732444][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1925.732444][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.732444][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.732444][ T72] ipv6_find_idev+0x102/0x170 [ 1925.732444][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.732444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.732444][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.732444][ T72] netlink_unicast+0x449/0x710 [ 1925.732444][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.732444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.732444][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.732444][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.732444][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.732444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.732444][ T72] [ 1925.734685][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1925.735326][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1925.735326][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.735326][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.735326][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.735326][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.735326][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.735326][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.735326][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.735326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.735326][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.735326][ T72] netlink_unicast+0x449/0x710 [ 1925.735326][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.735326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.735326][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.735326][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.735326][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.735326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.735326][ T72] [ 1925.737504][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1925.737504][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.737504][ T72] ipv6_find_idev+0x102/0x170 [ 1925.737504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.737504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.737504][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.737504][ T72] netlink_unicast+0x449/0x710 [ 1925.737504][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.737504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.737504][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.737504][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.737504][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.737504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.737504][ T72] [ 1925.739176][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1925.739176][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.739176][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.739176][ T72] ipv6_find_idev+0x102/0x170 [ 1925.739176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.739176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.739176][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.739176][ T72] netlink_unicast+0x449/0x710 [ 1925.739176][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.739176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.739176][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.739176][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.739176][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.739176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.739176][ T72] [ 1925.741053][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1925.741353][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1925.741353][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.741353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.741353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.741353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.741353][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.741353][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.741353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.741353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.741353][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.741353][ T72] netlink_unicast+0x449/0x710 [ 1925.741353][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.741353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.741353][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.741353][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.741353][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.741353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.741353][ T72] [ 1925.743540][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1925.743540][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.743540][ T72] ipv6_find_idev+0x102/0x170 [ 1925.743540][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.743540][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.743540][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.743540][ T72] netlink_unicast+0x449/0x710 [ 1925.743540][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.743540][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.743540][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.743540][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.743540][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.743540][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.743540][ T72] [ 1925.745315][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1925.745315][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.745315][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.745315][ T72] ipv6_find_idev+0x102/0x170 [ 1925.745315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.745315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.745315][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.745315][ T72] netlink_unicast+0x449/0x710 [ 1925.745315][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.745315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.745315][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.745315][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.745315][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.745315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.745315][ T72] [ 1925.747460][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1925.747826][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1925.747826][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.747826][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.747826][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.747826][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.747826][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.747826][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.747826][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.747826][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.747826][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.747826][ T72] netlink_unicast+0x449/0x710 [ 1925.747826][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.747826][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.747826][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.747826][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.747826][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.747826][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.747826][ T72] [ 1925.750167][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1925.750167][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.750167][ T72] ipv6_find_idev+0x102/0x170 [ 1925.750167][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.750167][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.750167][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.750167][ T72] netlink_unicast+0x449/0x710 [ 1925.750167][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.750167][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.750167][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.750167][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.750167][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.750167][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.750167][ T72] [ 1925.752048][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1925.752048][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.752048][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.752048][ T72] ipv6_find_idev+0x102/0x170 [ 1925.752048][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.752048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.752048][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.752048][ T72] netlink_unicast+0x449/0x710 [ 1925.752048][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.752048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.752048][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.752048][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.752048][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.752048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.752048][ T72] [ 1925.754138][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1925.754494][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1925.754494][ T72] netdev_get_by_index+0x5e/0x80 [ 1925.754494][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1925.754494][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1925.754494][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1925.754494][ T72] ipv6_add_addr+0x411/0x2000 [ 1925.754494][ T72] inet6_addr_add+0x30e/0xa40 [ 1925.754494][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1925.754494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.754494][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.754494][ T72] netlink_unicast+0x449/0x710 [ 1925.754494][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.754494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.754494][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.754494][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.754494][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.754494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.754494][ T72] [ 1925.756876][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1925.756876][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1925.756876][ T72] ipv6_find_idev+0x102/0x170 [ 1925.756876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.756876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.756876][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.756876][ T72] netlink_unicast+0x449/0x710 [ 1925.756876][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.756876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.756876][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.756876][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.756876][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.756876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.756876][ T72] [ 1925.758787][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1925.758787][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1925.758787][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1925.758787][ T72] ipv6_find_idev+0x102/0x170 [ 1925.758787][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1925.758787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1925.758787][ T72] netlink_rcv_skb+0x130/0x360 [ 1925.758787][ T72] netlink_unicast+0x449/0x710 [ 1925.758787][ T72] netlink_sendmsg+0x723/0xbe0 [ 1925.758787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1925.758787][ T72] ___sys_sendmsg+0xee/0x170 [ 1925.758787][ T72] __sys_sendmsg+0xcd/0x170 [ 1925.758787][ T72] do_syscall_64+0xc6/0x1e0 [ 1925.758787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1925.758787][ T72] [ 1935.998827][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1935.999325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1935.999325][ T72] netdev_get_by_index+0x5e/0x80 [ 1935.999325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1935.999325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1935.999325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1935.999325][ T72] ipv6_add_addr+0x411/0x2000 [ 1935.999325][ T72] inet6_addr_add+0x30e/0xa40 [ 1935.999325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1935.999325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1935.999325][ T72] netlink_rcv_skb+0x130/0x360 [ 1935.999325][ T72] netlink_unicast+0x449/0x710 [ 1935.999325][ T72] netlink_sendmsg+0x723/0xbe0 [ 1935.999325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1935.999325][ T72] ___sys_sendmsg+0xee/0x170 [ 1935.999325][ T72] __sys_sendmsg+0xcd/0x170 [ 1935.999325][ T72] do_syscall_64+0xc6/0x1e0 [ 1935.999325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1935.999325][ T72] [ 1936.001344][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1936.001344][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.001344][ T72] ipv6_find_idev+0x102/0x170 [ 1936.001344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.001344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.001344][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.001344][ T72] netlink_unicast+0x449/0x710 [ 1936.001344][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.001344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.001344][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.001344][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.001344][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.001344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.001344][ T72] [ 1936.002892][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1936.002892][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.002892][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.002892][ T72] ipv6_find_idev+0x102/0x170 [ 1936.002892][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.002892][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.002892][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.002892][ T72] netlink_unicast+0x449/0x710 [ 1936.002892][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.002892][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.002892][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.002892][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.002892][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.002892][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.002892][ T72] [ 1936.004604][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1936.004890][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1936.004890][ T72] netdev_get_by_index+0x5e/0x80 [ 1936.004890][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1936.004890][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1936.004890][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1936.004890][ T72] ipv6_add_addr+0x411/0x2000 [ 1936.004890][ T72] inet6_addr_add+0x30e/0xa40 [ 1936.004890][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1936.004890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.004890][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.004890][ T72] netlink_unicast+0x449/0x710 [ 1936.004890][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.004890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.004890][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.004890][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.004890][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.004890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.004890][ T72] [ 1936.006884][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1936.006884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.006884][ T72] ipv6_find_idev+0x102/0x170 [ 1936.006884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.006884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.006884][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.006884][ T72] netlink_unicast+0x449/0x710 [ 1936.006884][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.006884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.006884][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.006884][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.006884][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.006884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.006884][ T72] [ 1936.008431][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1936.008431][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.008431][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.008431][ T72] ipv6_find_idev+0x102/0x170 [ 1936.008431][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.008431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.008431][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.008431][ T72] netlink_unicast+0x449/0x710 [ 1936.008431][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.008431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.008431][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.008431][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.008431][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.008431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.008431][ T72] [ 1936.010113][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1936.010379][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1936.010379][ T72] netdev_get_by_index+0x5e/0x80 [ 1936.010379][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1936.010379][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1936.010379][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1936.010379][ T72] ipv6_add_addr+0x411/0x2000 [ 1936.010379][ T72] inet6_addr_add+0x30e/0xa40 [ 1936.010379][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1936.010379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.010379][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.010379][ T72] netlink_unicast+0x449/0x710 [ 1936.010379][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.010379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.010379][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.010379][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.010379][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.010379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.010379][ T72] [ 1936.012392][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1936.012392][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.012392][ T72] ipv6_find_idev+0x102/0x170 [ 1936.012392][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.012392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.012392][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.012392][ T72] netlink_unicast+0x449/0x710 [ 1936.012392][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.012392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.012392][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.012392][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.012392][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.012392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.012392][ T72] [ 1936.013921][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1936.013921][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.013921][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.013921][ T72] ipv6_find_idev+0x102/0x170 [ 1936.013921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.013921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.013921][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.013921][ T72] netlink_unicast+0x449/0x710 [ 1936.013921][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.013921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.013921][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.013921][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.013921][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.013921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.013921][ T72] [ 1936.015631][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1936.016345][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1936.016345][ T72] netdev_get_by_index+0x5e/0x80 [ 1936.016345][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1936.016345][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1936.016345][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1936.016345][ T72] ipv6_add_addr+0x411/0x2000 [ 1936.016345][ T72] inet6_addr_add+0x30e/0xa40 [ 1936.016345][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1936.016345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.016345][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.016345][ T72] netlink_unicast+0x449/0x710 [ 1936.016345][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.016345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.016345][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.016345][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.016345][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.016345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.016345][ T72] [ 1936.018863][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1936.018863][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.018863][ T72] ipv6_find_idev+0x102/0x170 [ 1936.018863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.018863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.018863][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.018863][ T72] netlink_unicast+0x449/0x710 [ 1936.018863][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.018863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.018863][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.018863][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.018863][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.018863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.018863][ T72] [ 1936.020397][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1936.020397][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.020397][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.020397][ T72] ipv6_find_idev+0x102/0x170 [ 1936.020397][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.020397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.020397][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.020397][ T72] netlink_unicast+0x449/0x710 [ 1936.020397][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.020397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.020397][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.020397][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.020397][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.020397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.020397][ T72] [ 1936.022133][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1936.022858][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1936.022858][ T72] netdev_get_by_index+0x5e/0x80 [ 1936.022858][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1936.022858][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1936.022858][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1936.022858][ T72] ipv6_add_addr+0x411/0x2000 [ 1936.022858][ T72] inet6_addr_add+0x30e/0xa40 [ 1936.022858][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1936.022858][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.022858][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.022858][ T72] netlink_unicast+0x449/0x710 [ 1936.022858][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.022858][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.022858][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.022858][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.022858][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.022858][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.022858][ T72] [ 1936.024866][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1936.024866][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.024866][ T72] ipv6_find_idev+0x102/0x170 [ 1936.024866][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.024866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.024866][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.024866][ T72] netlink_unicast+0x449/0x710 [ 1936.024866][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.024866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.024866][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.024866][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.024866][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.024866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.024866][ T72] [ 1936.026420][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1936.026420][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.026420][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.026420][ T72] ipv6_find_idev+0x102/0x170 [ 1936.026420][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.026420][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.026420][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.026420][ T72] netlink_unicast+0x449/0x710 [ 1936.026420][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.026420][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.026420][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.026420][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.026420][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.026420][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.026420][ T72] [ 1936.028167][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1936.028488][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1936.028488][ T72] netdev_get_by_index+0x5e/0x80 [ 1936.028488][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1936.028488][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1936.028488][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1936.028488][ T72] ipv6_add_addr+0x411/0x2000 [ 1936.028488][ T72] inet6_addr_add+0x30e/0xa40 [ 1936.028488][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1936.028488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.028488][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.028488][ T72] netlink_unicast+0x449/0x710 [ 1936.028488][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.028488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.028488][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.028488][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.028488][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.028488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.028488][ T72] [ 1936.030472][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1936.030472][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.030472][ T72] ipv6_find_idev+0x102/0x170 [ 1936.030472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.030472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.030472][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.030472][ T72] netlink_unicast+0x449/0x710 [ 1936.030472][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.030472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.030472][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.030472][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.030472][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.030472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.030472][ T72] [ 1936.032202][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1936.032202][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.032202][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.032202][ T72] ipv6_find_idev+0x102/0x170 [ 1936.032202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.032202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.032202][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.032202][ T72] netlink_unicast+0x449/0x710 [ 1936.032202][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.032202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.032202][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.032202][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.032202][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.032202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.032202][ T72] [ 1936.034270][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1936.034577][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1936.034577][ T72] netdev_get_by_index+0x5e/0x80 [ 1936.034577][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1936.034577][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1936.034577][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1936.034577][ T72] ipv6_add_addr+0x411/0x2000 [ 1936.034577][ T72] inet6_addr_add+0x30e/0xa40 [ 1936.034577][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1936.034577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.034577][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.034577][ T72] netlink_unicast+0x449/0x710 [ 1936.034577][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.034577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.034577][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.034577][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.034577][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.034577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.034577][ T72] [ 1936.037186][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1936.037186][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.037186][ T72] ipv6_find_idev+0x102/0x170 [ 1936.037186][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.037186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.037186][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.037186][ T72] netlink_unicast+0x449/0x710 [ 1936.037186][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.037186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.037186][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.037186][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.037186][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.037186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.037186][ T72] [ 1936.038895][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1936.038895][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.038895][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.038895][ T72] ipv6_find_idev+0x102/0x170 [ 1936.038895][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.038895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.038895][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.038895][ T72] netlink_unicast+0x449/0x710 [ 1936.038895][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.038895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.038895][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.038895][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.038895][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.038895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.038895][ T72] [ 1936.040807][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1936.041132][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1936.041132][ T72] netdev_get_by_index+0x5e/0x80 [ 1936.041132][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1936.041132][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1936.041132][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1936.041132][ T72] ipv6_add_addr+0x411/0x2000 [ 1936.041132][ T72] inet6_addr_add+0x30e/0xa40 [ 1936.041132][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1936.041132][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.041132][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.041132][ T72] netlink_unicast+0x449/0x710 [ 1936.041132][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.041132][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.041132][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.041132][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.041132][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.041132][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.041132][ T72] [ 1936.043297][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1936.043297][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1936.043297][ T72] ipv6_find_idev+0x102/0x170 [ 1936.043297][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.043297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.043297][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.043297][ T72] netlink_unicast+0x449/0x710 [ 1936.043297][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.043297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.043297][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.043297][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.043297][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.043297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.043297][ T72] [ 1936.045015][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1936.045015][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1936.045015][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1936.045015][ T72] ipv6_find_idev+0x102/0x170 [ 1936.045015][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1936.045015][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1936.045015][ T72] netlink_rcv_skb+0x130/0x360 [ 1936.045015][ T72] netlink_unicast+0x449/0x710 [ 1936.045015][ T72] netlink_sendmsg+0x723/0xbe0 [ 1936.045015][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1936.045015][ T72] ___sys_sendmsg+0xee/0x170 [ 1936.045015][ T72] __sys_sendmsg+0xcd/0x170 [ 1936.045015][ T72] do_syscall_64+0xc6/0x1e0 [ 1936.045015][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1936.045015][ T72] [ 1946.286889][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1946.287301][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1946.287301][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.287301][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.287301][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.287301][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.287301][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.287301][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.287301][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.287301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.287301][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.287301][ T72] netlink_unicast+0x449/0x710 [ 1946.287301][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.287301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.287301][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.287301][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.287301][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.287301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.287301][ T72] [ 1946.289298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1946.289298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.289298][ T72] ipv6_find_idev+0x102/0x170 [ 1946.289298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.289298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.289298][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.289298][ T72] netlink_unicast+0x449/0x710 [ 1946.289298][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.289298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.289298][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.289298][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.289298][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.289298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.289298][ T72] [ 1946.290837][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1946.290837][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.290837][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.290837][ T72] ipv6_find_idev+0x102/0x170 [ 1946.290837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.290837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.290837][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.290837][ T72] netlink_unicast+0x449/0x710 [ 1946.290837][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.290837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.290837][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.290837][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.290837][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.290837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.290837][ T72] [ 1946.292538][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1946.292823][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1946.292823][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.292823][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.292823][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.292823][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.292823][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.292823][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.292823][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.292823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.292823][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.292823][ T72] netlink_unicast+0x449/0x710 [ 1946.292823][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.292823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.292823][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.292823][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.292823][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.292823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.292823][ T72] [ 1946.294789][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1946.294789][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.294789][ T72] ipv6_find_idev+0x102/0x170 [ 1946.294789][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.294789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.294789][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.294789][ T72] netlink_unicast+0x449/0x710 [ 1946.294789][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.294789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.294789][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.294789][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.294789][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.294789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.294789][ T72] [ 1946.296308][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1946.296308][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.296308][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.296308][ T72] ipv6_find_idev+0x102/0x170 [ 1946.296308][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.296308][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.296308][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.296308][ T72] netlink_unicast+0x449/0x710 [ 1946.296308][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.296308][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.296308][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.296308][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.296308][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.296308][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.296308][ T72] [ 1946.297979][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1946.298237][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1946.298237][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.298237][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.298237][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.298237][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.298237][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.298237][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.298237][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.298237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.298237][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.298237][ T72] netlink_unicast+0x449/0x710 [ 1946.298237][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.298237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.298237][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.298237][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.298237][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.298237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.298237][ T72] [ 1946.300205][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1946.300205][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.300205][ T72] ipv6_find_idev+0x102/0x170 [ 1946.300205][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.300205][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.300205][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.300205][ T72] netlink_unicast+0x449/0x710 [ 1946.300205][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.300205][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.300205][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.300205][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.300205][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.300205][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.300205][ T72] [ 1946.301723][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1946.301723][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.301723][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.301723][ T72] ipv6_find_idev+0x102/0x170 [ 1946.301723][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.301723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.301723][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.301723][ T72] netlink_unicast+0x449/0x710 [ 1946.301723][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.301723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.301723][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.301723][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.301723][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.301723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.301723][ T72] [ 1946.303397][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1946.303666][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1946.303666][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.303666][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.303666][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.303666][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.303666][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.303666][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.303666][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.303666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.303666][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.303666][ T72] netlink_unicast+0x449/0x710 [ 1946.303666][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.303666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.303666][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.303666][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.303666][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.303666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.303666][ T72] [ 1946.305982][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1946.305982][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.305982][ T72] ipv6_find_idev+0x102/0x170 [ 1946.305982][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.305982][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.305982][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.305982][ T72] netlink_unicast+0x449/0x710 [ 1946.305982][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.305982][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.305982][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.305982][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.305982][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.305982][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.305982][ T72] [ 1946.307501][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1946.307501][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.307501][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.307501][ T72] ipv6_find_idev+0x102/0x170 [ 1946.307501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.307501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.307501][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.307501][ T72] netlink_unicast+0x449/0x710 [ 1946.307501][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.307501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.307501][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.307501][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.307501][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.307501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.307501][ T72] [ 1946.309562][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1946.310191][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1946.310191][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.310191][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.310191][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.310191][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.310191][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.310191][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.310191][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.310191][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.310191][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.310191][ T72] netlink_unicast+0x449/0x710 [ 1946.310191][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.310191][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.310191][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.310191][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.310191][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.310191][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.310191][ T72] [ 1946.312159][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1946.312159][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.312159][ T72] ipv6_find_idev+0x102/0x170 [ 1946.312159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.312159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.312159][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.312159][ T72] netlink_unicast+0x449/0x710 [ 1946.312159][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.312159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.312159][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.312159][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.312159][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.312159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.312159][ T72] [ 1946.313669][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1946.313669][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.313669][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.313669][ T72] ipv6_find_idev+0x102/0x170 [ 1946.313669][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.313669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.313669][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.313669][ T72] netlink_unicast+0x449/0x710 [ 1946.313669][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.313669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.313669][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.313669][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.313669][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.313669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.313669][ T72] [ 1946.315354][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1946.315621][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1946.315621][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.315621][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.315621][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.315621][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.315621][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.315621][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.315621][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.315621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.315621][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.315621][ T72] netlink_unicast+0x449/0x710 [ 1946.315621][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.315621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.315621][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.315621][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.315621][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.315621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.315621][ T72] [ 1946.317583][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1946.317583][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.317583][ T72] ipv6_find_idev+0x102/0x170 [ 1946.317583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.317583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.317583][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.317583][ T72] netlink_unicast+0x449/0x710 [ 1946.317583][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.317583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.317583][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.317583][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.317583][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.317583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.317583][ T72] [ 1946.319099][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1946.319099][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.319099][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.319099][ T72] ipv6_find_idev+0x102/0x170 [ 1946.319099][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.319099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.319099][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.319099][ T72] netlink_unicast+0x449/0x710 [ 1946.319099][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.319099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.319099][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.319099][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.319099][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.319099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.319099][ T72] [ 1946.321059][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1946.321320][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1946.321320][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.321320][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.321320][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.321320][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.321320][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.321320][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.321320][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.321320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.321320][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.321320][ T72] netlink_unicast+0x449/0x710 [ 1946.321320][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.321320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.321320][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.321320][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.321320][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.321320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.321320][ T72] [ 1946.323517][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1946.323517][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.323517][ T72] ipv6_find_idev+0x102/0x170 [ 1946.323517][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.323517][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.323517][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.323517][ T72] netlink_unicast+0x449/0x710 [ 1946.323517][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.323517][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.323517][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.323517][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.323517][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.323517][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.323517][ T72] [ 1946.325224][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1946.325224][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.325224][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.325224][ T72] ipv6_find_idev+0x102/0x170 [ 1946.325224][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.325224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.325224][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.325224][ T72] netlink_unicast+0x449/0x710 [ 1946.325224][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.325224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.325224][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.325224][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.325224][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.325224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.325224][ T72] [ 1946.327233][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1946.327501][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1946.327501][ T72] netdev_get_by_index+0x5e/0x80 [ 1946.327501][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1946.327501][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1946.327501][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1946.327501][ T72] ipv6_add_addr+0x411/0x2000 [ 1946.327501][ T72] inet6_addr_add+0x30e/0xa40 [ 1946.327501][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1946.327501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.327501][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.327501][ T72] netlink_unicast+0x449/0x710 [ 1946.327501][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.327501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.327501][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.327501][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.327501][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.327501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.327501][ T72] [ 1946.329660][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1946.329660][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1946.329660][ T72] ipv6_find_idev+0x102/0x170 [ 1946.329660][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.329660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.329660][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.329660][ T72] netlink_unicast+0x449/0x710 [ 1946.329660][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.329660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.329660][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.329660][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.329660][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.329660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.329660][ T72] [ 1946.331370][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1946.331370][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1946.331370][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1946.331370][ T72] ipv6_find_idev+0x102/0x170 [ 1946.331370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1946.331370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1946.331370][ T72] netlink_rcv_skb+0x130/0x360 [ 1946.331370][ T72] netlink_unicast+0x449/0x710 [ 1946.331370][ T72] netlink_sendmsg+0x723/0xbe0 [ 1946.331370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1946.331370][ T72] ___sys_sendmsg+0xee/0x170 [ 1946.331370][ T72] __sys_sendmsg+0xcd/0x170 [ 1946.331370][ T72] do_syscall_64+0xc6/0x1e0 [ 1946.331370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1946.331370][ T72] [ 1956.574857][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1956.575343][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1956.575343][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.575343][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.575343][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.575343][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.575343][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.575343][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.575343][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.575343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.575343][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.575343][ T72] netlink_unicast+0x449/0x710 [ 1956.575343][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.575343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.575343][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.575343][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.575343][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.575343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.575343][ T72] [ 1956.577405][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1956.577405][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.577405][ T72] ipv6_find_idev+0x102/0x170 [ 1956.577405][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.577405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.577405][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.577405][ T72] netlink_unicast+0x449/0x710 [ 1956.577405][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.577405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.577405][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.577405][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.577405][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.577405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.577405][ T72] [ 1956.578949][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1956.578949][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.578949][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.578949][ T72] ipv6_find_idev+0x102/0x170 [ 1956.578949][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.578949][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.578949][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.578949][ T72] netlink_unicast+0x449/0x710 [ 1956.578949][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.578949][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.578949][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.578949][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.578949][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.578949][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.578949][ T72] [ 1956.580665][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1956.580963][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1956.580963][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.580963][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.580963][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.580963][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.580963][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.580963][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.580963][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.580963][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.580963][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.580963][ T72] netlink_unicast+0x449/0x710 [ 1956.580963][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.580963][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.580963][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.580963][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.580963][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.580963][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.580963][ T72] [ 1956.582972][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1956.582972][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.582972][ T72] ipv6_find_idev+0x102/0x170 [ 1956.582972][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.582972][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.582972][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.582972][ T72] netlink_unicast+0x449/0x710 [ 1956.582972][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.582972][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.582972][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.582972][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.582972][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.582972][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.582972][ T72] [ 1956.584511][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1956.584511][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.584511][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.584511][ T72] ipv6_find_idev+0x102/0x170 [ 1956.584511][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.584511][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.584511][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.584511][ T72] netlink_unicast+0x449/0x710 [ 1956.584511][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.584511][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.584511][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.584511][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.584511][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.584511][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.584511][ T72] [ 1956.586191][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1956.586465][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1956.586465][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.586465][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.586465][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.586465][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.586465][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.586465][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.586465][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.586465][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.586465][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.586465][ T72] netlink_unicast+0x449/0x710 [ 1956.586465][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.586465][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.586465][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.586465][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.586465][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.586465][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.586465][ T72] [ 1956.588471][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1956.588471][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.588471][ T72] ipv6_find_idev+0x102/0x170 [ 1956.588471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.588471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.588471][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.588471][ T72] netlink_unicast+0x449/0x710 [ 1956.588471][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.588471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.588471][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.588471][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.588471][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.588471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.588471][ T72] [ 1956.590034][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1956.590034][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.590034][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.590034][ T72] ipv6_find_idev+0x102/0x170 [ 1956.590034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.590034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.590034][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.590034][ T72] netlink_unicast+0x449/0x710 [ 1956.590034][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.590034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.590034][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.590034][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.590034][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.590034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.590034][ T72] [ 1956.591710][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1956.592419][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1956.592419][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.592419][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.592419][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.592419][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.592419][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.592419][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.592419][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.592419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.592419][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.592419][ T72] netlink_unicast+0x449/0x710 [ 1956.592419][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.592419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.592419][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.592419][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.592419][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.592419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.592419][ T72] [ 1956.594400][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1956.594400][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.594400][ T72] ipv6_find_idev+0x102/0x170 [ 1956.594400][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.594400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.594400][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.594400][ T72] netlink_unicast+0x449/0x710 [ 1956.594400][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.594400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.594400][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.594400][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.594400][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.594400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.594400][ T72] [ 1956.595936][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1956.595936][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.595936][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.595936][ T72] ipv6_find_idev+0x102/0x170 [ 1956.595936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.595936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.595936][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.595936][ T72] netlink_unicast+0x449/0x710 [ 1956.595936][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.595936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.595936][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.595936][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.595936][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.595936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.595936][ T72] [ 1956.597657][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1956.597978][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1956.597978][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.597978][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.597978][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.597978][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.597978][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.597978][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.597978][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.597978][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.597978][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.597978][ T72] netlink_unicast+0x449/0x710 [ 1956.597978][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.597978][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.597978][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.597978][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.597978][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.597978][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.597978][ T72] [ 1956.599958][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1956.599958][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.599958][ T72] ipv6_find_idev+0x102/0x170 [ 1956.599958][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.599958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.599958][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.599958][ T72] netlink_unicast+0x449/0x710 [ 1956.599958][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.599958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.599958][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.599958][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.599958][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.599958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.599958][ T72] [ 1956.601507][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1956.601507][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.601507][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.601507][ T72] ipv6_find_idev+0x102/0x170 [ 1956.601507][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.601507][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.601507][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.601507][ T72] netlink_unicast+0x449/0x710 [ 1956.601507][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.601507][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.601507][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.601507][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.601507][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.601507][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.601507][ T72] [ 1956.603242][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1956.603555][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1956.603555][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.603555][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.603555][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.603555][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.603555][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.603555][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.603555][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.603555][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.603555][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.603555][ T72] netlink_unicast+0x449/0x710 [ 1956.603555][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.603555][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.603555][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.603555][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.603555][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.603555][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.603555][ T72] [ 1956.605542][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1956.605542][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.605542][ T72] ipv6_find_idev+0x102/0x170 [ 1956.605542][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.605542][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.605542][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.605542][ T72] netlink_unicast+0x449/0x710 [ 1956.605542][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.605542][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.605542][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.605542][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.605542][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.605542][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.605542][ T72] [ 1956.607259][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1956.607259][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.607259][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.607259][ T72] ipv6_find_idev+0x102/0x170 [ 1956.607259][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.607259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.607259][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.607259][ T72] netlink_unicast+0x449/0x710 [ 1956.607259][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.607259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.607259][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.607259][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.607259][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.607259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.607259][ T72] [ 1956.609280][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1956.609585][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1956.609585][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.609585][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.609585][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.609585][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.609585][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.609585][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.609585][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.609585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.609585][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.609585][ T72] netlink_unicast+0x449/0x710 [ 1956.609585][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.609585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.609585][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.609585][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.609585][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.609585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.609585][ T72] [ 1956.611763][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1956.611763][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.611763][ T72] ipv6_find_idev+0x102/0x170 [ 1956.611763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.611763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.611763][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.611763][ T72] netlink_unicast+0x449/0x710 [ 1956.611763][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.611763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.611763][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.611763][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.611763][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.611763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.611763][ T72] [ 1956.613475][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1956.613475][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.613475][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.613475][ T72] ipv6_find_idev+0x102/0x170 [ 1956.613475][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.613475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.613475][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.613475][ T72] netlink_unicast+0x449/0x710 [ 1956.613475][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.613475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.613475][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.613475][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.613475][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.613475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.613475][ T72] [ 1956.615376][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1956.615686][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1956.615686][ T72] netdev_get_by_index+0x5e/0x80 [ 1956.615686][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1956.615686][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1956.615686][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1956.615686][ T72] ipv6_add_addr+0x411/0x2000 [ 1956.615686][ T72] inet6_addr_add+0x30e/0xa40 [ 1956.615686][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1956.615686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.615686][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.615686][ T72] netlink_unicast+0x449/0x710 [ 1956.615686][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.615686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.615686][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.615686][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.615686][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.615686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.615686][ T72] [ 1956.617857][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1956.617857][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1956.617857][ T72] ipv6_find_idev+0x102/0x170 [ 1956.617857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.617857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.617857][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.617857][ T72] netlink_unicast+0x449/0x710 [ 1956.617857][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.617857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.617857][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.617857][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.617857][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.617857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.617857][ T72] [ 1956.619641][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1956.619641][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1956.619641][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1956.619641][ T72] ipv6_find_idev+0x102/0x170 [ 1956.619641][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1956.619641][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1956.619641][ T72] netlink_rcv_skb+0x130/0x360 [ 1956.619641][ T72] netlink_unicast+0x449/0x710 [ 1956.619641][ T72] netlink_sendmsg+0x723/0xbe0 [ 1956.619641][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1956.619641][ T72] ___sys_sendmsg+0xee/0x170 [ 1956.619641][ T72] __sys_sendmsg+0xcd/0x170 [ 1956.619641][ T72] do_syscall_64+0xc6/0x1e0 [ 1956.619641][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1956.619641][ T72] [ 1966.862820][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1966.863248][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1966.863248][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.863248][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.863248][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.863248][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.863248][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.863248][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.863248][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.863248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.863248][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.863248][ T72] netlink_unicast+0x449/0x710 [ 1966.863248][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.863248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.863248][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.863248][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.863248][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.863248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.863248][ T72] [ 1966.865268][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1966.865268][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.865268][ T72] ipv6_find_idev+0x102/0x170 [ 1966.865268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.865268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.865268][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.865268][ T72] netlink_unicast+0x449/0x710 [ 1966.865268][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.865268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.865268][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.865268][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.865268][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.865268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.865268][ T72] [ 1966.866817][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1966.866817][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.866817][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.866817][ T72] ipv6_find_idev+0x102/0x170 [ 1966.866817][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.866817][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.866817][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.866817][ T72] netlink_unicast+0x449/0x710 [ 1966.866817][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.866817][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.866817][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.866817][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.866817][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.866817][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.866817][ T72] [ 1966.868569][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1966.868871][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1966.868871][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.868871][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.868871][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.868871][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.868871][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.868871][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.868871][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.868871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.868871][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.868871][ T72] netlink_unicast+0x449/0x710 [ 1966.868871][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.868871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.868871][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.868871][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.868871][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.868871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.868871][ T72] [ 1966.870886][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1966.870886][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.870886][ T72] ipv6_find_idev+0x102/0x170 [ 1966.870886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.870886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.870886][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.870886][ T72] netlink_unicast+0x449/0x710 [ 1966.870886][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.870886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.870886][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.870886][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.870886][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.870886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.870886][ T72] [ 1966.872459][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1966.872459][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.872459][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.872459][ T72] ipv6_find_idev+0x102/0x170 [ 1966.872459][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.872459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.872459][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.872459][ T72] netlink_unicast+0x449/0x710 [ 1966.872459][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.872459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.872459][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.872459][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.872459][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.872459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.872459][ T72] [ 1966.874150][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1966.874419][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1966.874419][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.874419][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.874419][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.874419][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.874419][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.874419][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.874419][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.874419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.874419][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.874419][ T72] netlink_unicast+0x449/0x710 [ 1966.874419][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.874419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.874419][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.874419][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.874419][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.874419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.874419][ T72] [ 1966.876411][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1966.876411][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.876411][ T72] ipv6_find_idev+0x102/0x170 [ 1966.876411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.876411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.876411][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.876411][ T72] netlink_unicast+0x449/0x710 [ 1966.876411][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.876411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.876411][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.876411][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.876411][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.876411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.876411][ T72] [ 1966.877942][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1966.877942][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.877942][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.877942][ T72] ipv6_find_idev+0x102/0x170 [ 1966.877942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.877942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.877942][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.877942][ T72] netlink_unicast+0x449/0x710 [ 1966.877942][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.877942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.877942][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.877942][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.877942][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.877942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.877942][ T72] [ 1966.879619][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1966.880338][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1966.880338][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.880338][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.880338][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.880338][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.880338][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.880338][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.880338][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.880338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.880338][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.880338][ T72] netlink_unicast+0x449/0x710 [ 1966.880338][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.880338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.880338][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.880338][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.880338][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.880338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.880338][ T72] [ 1966.882322][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1966.882322][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.882322][ T72] ipv6_find_idev+0x102/0x170 [ 1966.882322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.882322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.882322][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.882322][ T72] netlink_unicast+0x449/0x710 [ 1966.882322][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.882322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.882322][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.882322][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.882322][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.882322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.882322][ T72] [ 1966.883850][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1966.883850][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.883850][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.883850][ T72] ipv6_find_idev+0x102/0x170 [ 1966.883850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.883850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.883850][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.883850][ T72] netlink_unicast+0x449/0x710 [ 1966.883850][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.883850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.883850][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.883850][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.883850][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.883850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.883850][ T72] [ 1966.885573][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1966.885897][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1966.885897][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.885897][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.885897][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.885897][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.885897][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.885897][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.885897][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.885897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.885897][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.885897][ T72] netlink_unicast+0x449/0x710 [ 1966.885897][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.885897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.885897][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.885897][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.885897][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.885897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.885897][ T72] [ 1966.887897][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1966.887897][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.887897][ T72] ipv6_find_idev+0x102/0x170 [ 1966.887897][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.887897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.887897][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.887897][ T72] netlink_unicast+0x449/0x710 [ 1966.887897][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.887897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.887897][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.887897][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.887897][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.887897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.887897][ T72] [ 1966.889437][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1966.889437][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.889437][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.889437][ T72] ipv6_find_idev+0x102/0x170 [ 1966.889437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.889437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.889437][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.889437][ T72] netlink_unicast+0x449/0x710 [ 1966.889437][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.889437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.889437][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.889437][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.889437][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.889437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.889437][ T72] [ 1966.891179][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1966.891490][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1966.891490][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.891490][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.891490][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.891490][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.891490][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.891490][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.891490][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.891490][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.891490][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.891490][ T72] netlink_unicast+0x449/0x710 [ 1966.891490][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.891490][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.891490][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.891490][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.891490][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.891490][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.891490][ T72] [ 1966.893495][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1966.893495][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.893495][ T72] ipv6_find_idev+0x102/0x170 [ 1966.893495][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.893495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.893495][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.893495][ T72] netlink_unicast+0x449/0x710 [ 1966.893495][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.893495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.893495][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.893495][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.893495][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.893495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.893495][ T72] [ 1966.895220][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1966.895220][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.895220][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.895220][ T72] ipv6_find_idev+0x102/0x170 [ 1966.895220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.895220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.895220][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.895220][ T72] netlink_unicast+0x449/0x710 [ 1966.895220][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.895220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.895220][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.895220][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.895220][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.895220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.895220][ T72] [ 1966.897231][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1966.897540][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1966.897540][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.897540][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.897540][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.897540][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.897540][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.897540][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.897540][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.897540][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.897540][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.897540][ T72] netlink_unicast+0x449/0x710 [ 1966.897540][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.897540][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.897540][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.897540][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.897540][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.897540][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.897540][ T72] [ 1966.899706][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1966.899706][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.899706][ T72] ipv6_find_idev+0x102/0x170 [ 1966.899706][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.899706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.899706][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.899706][ T72] netlink_unicast+0x449/0x710 [ 1966.899706][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.899706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.899706][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.899706][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.899706][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.899706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.899706][ T72] [ 1966.901434][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1966.901434][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.901434][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.901434][ T72] ipv6_find_idev+0x102/0x170 [ 1966.901434][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.901434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.901434][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.901434][ T72] netlink_unicast+0x449/0x710 [ 1966.901434][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.901434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.901434][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.901434][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.901434][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.901434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.901434][ T72] [ 1966.903356][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1966.903664][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1966.903664][ T72] netdev_get_by_index+0x5e/0x80 [ 1966.903664][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1966.903664][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1966.903664][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1966.903664][ T72] ipv6_add_addr+0x411/0x2000 [ 1966.903664][ T72] inet6_addr_add+0x30e/0xa40 [ 1966.903664][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1966.903664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.903664][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.903664][ T72] netlink_unicast+0x449/0x710 [ 1966.903664][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.903664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.903664][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.903664][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.903664][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.903664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.903664][ T72] [ 1966.905839][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1966.905839][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1966.905839][ T72] ipv6_find_idev+0x102/0x170 [ 1966.905839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.905839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.905839][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.905839][ T72] netlink_unicast+0x449/0x710 [ 1966.905839][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.905839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.905839][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.905839][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.905839][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.905839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.905839][ T72] [ 1966.907567][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1966.907567][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1966.907567][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1966.907567][ T72] ipv6_find_idev+0x102/0x170 [ 1966.907567][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1966.907567][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1966.907567][ T72] netlink_rcv_skb+0x130/0x360 [ 1966.907567][ T72] netlink_unicast+0x449/0x710 [ 1966.907567][ T72] netlink_sendmsg+0x723/0xbe0 [ 1966.907567][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1966.907567][ T72] ___sys_sendmsg+0xee/0x170 [ 1966.907567][ T72] __sys_sendmsg+0xcd/0x170 [ 1966.907567][ T72] do_syscall_64+0xc6/0x1e0 [ 1966.907567][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1966.907567][ T72] [ 1977.150856][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1977.151280][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1977.151280][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.151280][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.151280][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.151280][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.151280][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.151280][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.151280][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.151280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.151280][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.151280][ T72] netlink_unicast+0x449/0x710 [ 1977.151280][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.151280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.151280][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.151280][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.151280][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.151280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.151280][ T72] [ 1977.153302][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1977.153302][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.153302][ T72] ipv6_find_idev+0x102/0x170 [ 1977.153302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.153302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.153302][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.153302][ T72] netlink_unicast+0x449/0x710 [ 1977.153302][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.153302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.153302][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.153302][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.153302][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.153302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.153302][ T72] [ 1977.154856][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1977.154856][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.154856][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.154856][ T72] ipv6_find_idev+0x102/0x170 [ 1977.154856][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.154856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.154856][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.154856][ T72] netlink_unicast+0x449/0x710 [ 1977.154856][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.154856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.154856][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.154856][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.154856][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.154856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.154856][ T72] [ 1977.156569][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1977.156857][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1977.156857][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.156857][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.156857][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.156857][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.156857][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.156857][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.156857][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.156857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.156857][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.156857][ T72] netlink_unicast+0x449/0x710 [ 1977.156857][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.156857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.156857][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.156857][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.156857][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.156857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.156857][ T72] [ 1977.158847][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1977.158847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.158847][ T72] ipv6_find_idev+0x102/0x170 [ 1977.158847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.158847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.158847][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.158847][ T72] netlink_unicast+0x449/0x710 [ 1977.158847][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.158847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.158847][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.158847][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.158847][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.158847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.158847][ T72] [ 1977.160422][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1977.160422][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.160422][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.160422][ T72] ipv6_find_idev+0x102/0x170 [ 1977.160422][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.160422][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.160422][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.160422][ T72] netlink_unicast+0x449/0x710 [ 1977.160422][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.160422][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.160422][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.160422][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.160422][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.160422][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.160422][ T72] [ 1977.162141][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1977.162410][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1977.162410][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.162410][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.162410][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.162410][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.162410][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.162410][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.162410][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.162410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.162410][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.162410][ T72] netlink_unicast+0x449/0x710 [ 1977.162410][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.162410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.162410][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.162410][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.162410][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.162410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.162410][ T72] [ 1977.164402][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1977.164402][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.164402][ T72] ipv6_find_idev+0x102/0x170 [ 1977.164402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.164402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.164402][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.164402][ T72] netlink_unicast+0x449/0x710 [ 1977.164402][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.164402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.164402][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.164402][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.164402][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.164402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.164402][ T72] [ 1977.165959][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1977.165959][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.165959][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.165959][ T72] ipv6_find_idev+0x102/0x170 [ 1977.165959][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.165959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.165959][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.165959][ T72] netlink_unicast+0x449/0x710 [ 1977.165959][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.165959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.165959][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.165959][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.165959][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.165959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.165959][ T72] [ 1977.167640][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1977.168347][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1977.168347][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.168347][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.168347][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.168347][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.168347][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.168347][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.168347][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.168347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.168347][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.168347][ T72] netlink_unicast+0x449/0x710 [ 1977.168347][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.168347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.168347][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.168347][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.168347][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.168347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.168347][ T72] [ 1977.170348][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1977.170348][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.170348][ T72] ipv6_find_idev+0x102/0x170 [ 1977.170348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.170348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.170348][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.170348][ T72] netlink_unicast+0x449/0x710 [ 1977.170348][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.170348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.170348][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.170348][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.170348][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.170348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.170348][ T72] [ 1977.171906][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1977.171906][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.171906][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.171906][ T72] ipv6_find_idev+0x102/0x170 [ 1977.171906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.171906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.171906][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.171906][ T72] netlink_unicast+0x449/0x710 [ 1977.171906][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.171906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.171906][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.171906][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.171906][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.171906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.171906][ T72] [ 1977.173640][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1977.173969][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1977.173969][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.173969][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.173969][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.173969][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.173969][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.173969][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.173969][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.173969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.173969][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.173969][ T72] netlink_unicast+0x449/0x710 [ 1977.173969][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.173969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.173969][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.173969][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.173969][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.173969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.173969][ T72] [ 1977.175958][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1977.175958][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.175958][ T72] ipv6_find_idev+0x102/0x170 [ 1977.175958][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.175958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.175958][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.175958][ T72] netlink_unicast+0x449/0x710 [ 1977.175958][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.175958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.175958][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.175958][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.175958][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.175958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.175958][ T72] [ 1977.177511][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1977.177511][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.177511][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.177511][ T72] ipv6_find_idev+0x102/0x170 [ 1977.177511][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.177511][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.177511][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.177511][ T72] netlink_unicast+0x449/0x710 [ 1977.177511][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.177511][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.177511][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.177511][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.177511][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.177511][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.177511][ T72] [ 1977.179241][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1977.179563][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1977.179563][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.179563][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.179563][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.179563][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.179563][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.179563][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.179563][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.179563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.179563][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.179563][ T72] netlink_unicast+0x449/0x710 [ 1977.179563][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.179563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.179563][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.179563][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.179563][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.179563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.179563][ T72] [ 1977.181556][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1977.181556][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.181556][ T72] ipv6_find_idev+0x102/0x170 [ 1977.181556][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.181556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.181556][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.181556][ T72] netlink_unicast+0x449/0x710 [ 1977.181556][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.181556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.181556][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.181556][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.181556][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.181556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.181556][ T72] [ 1977.183277][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1977.183277][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.183277][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.183277][ T72] ipv6_find_idev+0x102/0x170 [ 1977.183277][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.183277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.183277][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.183277][ T72] netlink_unicast+0x449/0x710 [ 1977.183277][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.183277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.183277][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.183277][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.183277][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.183277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.183277][ T72] [ 1977.185290][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1977.185607][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1977.185607][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.185607][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.185607][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.185607][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.185607][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.185607][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.185607][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.185607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.185607][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.185607][ T72] netlink_unicast+0x449/0x710 [ 1977.185607][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.185607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.185607][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.185607][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.185607][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.185607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.185607][ T72] [ 1977.187844][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1977.187844][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.187844][ T72] ipv6_find_idev+0x102/0x170 [ 1977.187844][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.187844][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.187844][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.187844][ T72] netlink_unicast+0x449/0x710 [ 1977.187844][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.187844][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.187844][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.187844][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.187844][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.187844][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.187844][ T72] [ 1977.189572][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1977.189572][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.189572][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.189572][ T72] ipv6_find_idev+0x102/0x170 [ 1977.189572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.189572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.189572][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.189572][ T72] netlink_unicast+0x449/0x710 [ 1977.189572][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.189572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.189572][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.189572][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.189572][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.189572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.189572][ T72] [ 1977.191478][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1977.191808][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1977.191808][ T72] netdev_get_by_index+0x5e/0x80 [ 1977.191808][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1977.191808][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1977.191808][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1977.191808][ T72] ipv6_add_addr+0x411/0x2000 [ 1977.191808][ T72] inet6_addr_add+0x30e/0xa40 [ 1977.191808][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1977.191808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.191808][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.191808][ T72] netlink_unicast+0x449/0x710 [ 1977.191808][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.191808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.191808][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.191808][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.191808][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.191808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.191808][ T72] [ 1977.193975][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1977.193975][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1977.193975][ T72] ipv6_find_idev+0x102/0x170 [ 1977.193975][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.193975][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.193975][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.193975][ T72] netlink_unicast+0x449/0x710 [ 1977.193975][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.193975][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.193975][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.193975][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.193975][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.193975][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.193975][ T72] [ 1977.195691][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1977.195691][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1977.195691][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1977.195691][ T72] ipv6_find_idev+0x102/0x170 [ 1977.195691][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1977.195691][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1977.195691][ T72] netlink_rcv_skb+0x130/0x360 [ 1977.195691][ T72] netlink_unicast+0x449/0x710 [ 1977.195691][ T72] netlink_sendmsg+0x723/0xbe0 [ 1977.195691][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1977.195691][ T72] ___sys_sendmsg+0xee/0x170 [ 1977.195691][ T72] __sys_sendmsg+0xcd/0x170 [ 1977.195691][ T72] do_syscall_64+0xc6/0x1e0 [ 1977.195691][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1977.195691][ T72] [ 1987.374803][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1987.375266][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1987.375266][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.375266][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.375266][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.375266][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.375266][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.375266][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.375266][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.375266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.375266][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.375266][ T72] netlink_unicast+0x449/0x710 [ 1987.375266][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.375266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.375266][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.375266][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.375266][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.375266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.375266][ T72] [ 1987.377258][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1987.377258][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.377258][ T72] ipv6_find_idev+0x102/0x170 [ 1987.377258][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.377258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.377258][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.377258][ T72] netlink_unicast+0x449/0x710 [ 1987.377258][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.377258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.377258][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.377258][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.377258][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.377258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.377258][ T72] [ 1987.378773][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1987.378773][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.378773][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.378773][ T72] ipv6_find_idev+0x102/0x170 [ 1987.378773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.378773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.378773][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.378773][ T72] netlink_unicast+0x449/0x710 [ 1987.378773][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.378773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.378773][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.378773][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.378773][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.378773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.378773][ T72] [ 1987.380435][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1987.380708][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1987.380708][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.380708][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.380708][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.380708][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.380708][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.380708][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.380708][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.380708][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.380708][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.380708][ T72] netlink_unicast+0x449/0x710 [ 1987.380708][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.380708][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.380708][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.380708][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.380708][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.380708][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.380708][ T72] [ 1987.382692][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1987.382692][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.382692][ T72] ipv6_find_idev+0x102/0x170 [ 1987.382692][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.382692][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.382692][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.382692][ T72] netlink_unicast+0x449/0x710 [ 1987.382692][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.382692][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.382692][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.382692][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.382692][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.382692][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.382692][ T72] [ 1987.384201][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1987.384201][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.384201][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.384201][ T72] ipv6_find_idev+0x102/0x170 [ 1987.384201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.384201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.384201][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.384201][ T72] netlink_unicast+0x449/0x710 [ 1987.384201][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.384201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.384201][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.384201][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.384201][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.384201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.384201][ T72] [ 1987.385864][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1987.386125][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1987.386125][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.386125][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.386125][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.386125][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.386125][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.386125][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.386125][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.386125][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.386125][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.386125][ T72] netlink_unicast+0x449/0x710 [ 1987.386125][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.386125][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.386125][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.386125][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.386125][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.386125][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.386125][ T72] [ 1987.388081][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1987.388081][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.388081][ T72] ipv6_find_idev+0x102/0x170 [ 1987.388081][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.388081][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.388081][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.388081][ T72] netlink_unicast+0x449/0x710 [ 1987.388081][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.388081][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.388081][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.388081][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.388081][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.388081][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.388081][ T72] [ 1987.389643][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1987.389643][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.389643][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.389643][ T72] ipv6_find_idev+0x102/0x170 [ 1987.389643][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.389643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.389643][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.389643][ T72] netlink_unicast+0x449/0x710 [ 1987.389643][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.389643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.389643][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.389643][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.389643][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.389643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.389643][ T72] [ 1987.391299][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1987.391558][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1987.391558][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.391558][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.391558][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.391558][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.391558][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.391558][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.391558][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.391558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.391558][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.391558][ T72] netlink_unicast+0x449/0x710 [ 1987.391558][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.391558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.391558][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.391558][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.391558][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.391558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.391558][ T72] [ 1987.393536][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1987.393536][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.393536][ T72] ipv6_find_idev+0x102/0x170 [ 1987.393536][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.393536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.393536][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.393536][ T72] netlink_unicast+0x449/0x710 [ 1987.393536][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.393536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.393536][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.393536][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.393536][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.393536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.393536][ T72] [ 1987.395041][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1987.395041][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.395041][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.395041][ T72] ipv6_find_idev+0x102/0x170 [ 1987.395041][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.395041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.395041][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.395041][ T72] netlink_unicast+0x449/0x710 [ 1987.395041][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.395041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.395041][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.395041][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.395041][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.395041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.395041][ T72] [ 1987.397108][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1987.397370][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1987.397370][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.397370][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.397370][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.397370][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.397370][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.397370][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.397370][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.397370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.397370][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.397370][ T72] netlink_unicast+0x449/0x710 [ 1987.397370][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.397370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.397370][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.397370][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.397370][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.397370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.397370][ T72] [ 1987.399323][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1987.399323][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.399323][ T72] ipv6_find_idev+0x102/0x170 [ 1987.399323][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.399323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.399323][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.399323][ T72] netlink_unicast+0x449/0x710 [ 1987.399323][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.399323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.399323][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.399323][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.399323][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.399323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.399323][ T72] [ 1987.400830][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1987.400830][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.400830][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.400830][ T72] ipv6_find_idev+0x102/0x170 [ 1987.400830][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.400830][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.400830][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.400830][ T72] netlink_unicast+0x449/0x710 [ 1987.400830][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.400830][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.400830][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.400830][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.400830][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.400830][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.400830][ T72] [ 1987.402532][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1987.402846][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1987.402846][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.402846][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.402846][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.402846][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.402846][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.402846][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.402846][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.402846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.402846][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.402846][ T72] netlink_unicast+0x449/0x710 [ 1987.402846][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.402846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.402846][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.402846][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.402846][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.402846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.402846][ T72] [ 1987.404890][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1987.404890][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.404890][ T72] ipv6_find_idev+0x102/0x170 [ 1987.404890][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.404890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.404890][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.404890][ T72] netlink_unicast+0x449/0x710 [ 1987.404890][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.404890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.404890][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.404890][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.404890][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.404890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.404890][ T72] [ 1987.406635][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1987.406635][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.406635][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.406635][ T72] ipv6_find_idev+0x102/0x170 [ 1987.406635][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.406635][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.406635][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.406635][ T72] netlink_unicast+0x449/0x710 [ 1987.406635][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.406635][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.406635][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.406635][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.406635][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.406635][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.406635][ T72] [ 1987.408564][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1987.408877][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1987.408877][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.408877][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.408877][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.408877][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.408877][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.408877][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.408877][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.408877][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.408877][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.408877][ T72] netlink_unicast+0x449/0x710 [ 1987.408877][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.408877][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.408877][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.408877][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.408877][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.408877][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.408877][ T72] [ 1987.411008][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1987.411008][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.411008][ T72] ipv6_find_idev+0x102/0x170 [ 1987.411008][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.411008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.411008][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.411008][ T72] netlink_unicast+0x449/0x710 [ 1987.411008][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.411008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.411008][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.411008][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.411008][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.411008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.411008][ T72] [ 1987.412635][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1987.412635][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.412635][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.412635][ T72] ipv6_find_idev+0x102/0x170 [ 1987.412635][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.412635][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.412635][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.412635][ T72] netlink_unicast+0x449/0x710 [ 1987.412635][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.412635][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.412635][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.412635][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.412635][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.412635][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.412635][ T72] [ 1987.414574][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1987.414897][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1987.414897][ T72] netdev_get_by_index+0x5e/0x80 [ 1987.414897][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1987.414897][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1987.414897][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1987.414897][ T72] ipv6_add_addr+0x411/0x2000 [ 1987.414897][ T72] inet6_addr_add+0x30e/0xa40 [ 1987.414897][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1987.414897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.414897][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.414897][ T72] netlink_unicast+0x449/0x710 [ 1987.414897][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.414897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.414897][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.414897][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.414897][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.414897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.414897][ T72] [ 1987.417096][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1987.417096][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1987.417096][ T72] ipv6_find_idev+0x102/0x170 [ 1987.417096][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.417096][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.417096][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.417096][ T72] netlink_unicast+0x449/0x710 [ 1987.417096][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.417096][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.417096][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.417096][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.417096][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.417096][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.417096][ T72] [ 1987.418785][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1987.418785][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1987.418785][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1987.418785][ T72] ipv6_find_idev+0x102/0x170 [ 1987.418785][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1987.418785][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1987.418785][ T72] netlink_rcv_skb+0x130/0x360 [ 1987.418785][ T72] netlink_unicast+0x449/0x710 [ 1987.418785][ T72] netlink_sendmsg+0x723/0xbe0 [ 1987.418785][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1987.418785][ T72] ___sys_sendmsg+0xee/0x170 [ 1987.418785][ T72] __sys_sendmsg+0xcd/0x170 [ 1987.418785][ T72] do_syscall_64+0xc6/0x1e0 [ 1987.418785][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1987.418785][ T72] [ 1997.670830][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 1997.671328][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1997.671328][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.671328][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.671328][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.671328][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.671328][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.671328][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.671328][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.671328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.671328][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.671328][ T72] netlink_unicast+0x449/0x710 [ 1997.671328][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.671328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.671328][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.671328][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.671328][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.671328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.671328][ T72] [ 1997.673372][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1997.673372][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.673372][ T72] ipv6_find_idev+0x102/0x170 [ 1997.673372][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.673372][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.673372][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.673372][ T72] netlink_unicast+0x449/0x710 [ 1997.673372][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.673372][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.673372][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.673372][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.673372][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.673372][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.673372][ T72] [ 1997.674917][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 1997.674917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.674917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.674917][ T72] ipv6_find_idev+0x102/0x170 [ 1997.674917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.674917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.674917][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.674917][ T72] netlink_unicast+0x449/0x710 [ 1997.674917][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.674917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.674917][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.674917][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.674917][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.674917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.674917][ T72] [ 1997.676632][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 1997.676913][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1997.676913][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.676913][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.676913][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.676913][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.676913][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.676913][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.676913][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.676913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.676913][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.676913][ T72] netlink_unicast+0x449/0x710 [ 1997.676913][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.676913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.676913][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.676913][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.676913][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.676913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.676913][ T72] [ 1997.678937][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1997.678937][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.678937][ T72] ipv6_find_idev+0x102/0x170 [ 1997.678937][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.678937][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.678937][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.678937][ T72] netlink_unicast+0x449/0x710 [ 1997.678937][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.678937][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.678937][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.678937][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.678937][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.678937][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.678937][ T72] [ 1997.680482][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 1997.680482][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.680482][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.680482][ T72] ipv6_find_idev+0x102/0x170 [ 1997.680482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.680482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.680482][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.680482][ T72] netlink_unicast+0x449/0x710 [ 1997.680482][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.680482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.680482][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.680482][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.680482][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.680482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.680482][ T72] [ 1997.682173][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 1997.682455][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1997.682455][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.682455][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.682455][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.682455][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.682455][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.682455][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.682455][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.682455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.682455][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.682455][ T72] netlink_unicast+0x449/0x710 [ 1997.682455][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.682455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.682455][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.682455][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.682455][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.682455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.682455][ T72] [ 1997.684455][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1997.684455][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.684455][ T72] ipv6_find_idev+0x102/0x170 [ 1997.684455][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.684455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.684455][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.684455][ T72] netlink_unicast+0x449/0x710 [ 1997.684455][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.684455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.684455][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.684455][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.684455][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.684455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.684455][ T72] [ 1997.686003][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 1997.686003][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.686003][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.686003][ T72] ipv6_find_idev+0x102/0x170 [ 1997.686003][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.686003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.686003][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.686003][ T72] netlink_unicast+0x449/0x710 [ 1997.686003][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.686003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.686003][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.686003][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.686003][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.686003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.686003][ T72] [ 1997.687681][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 1997.688400][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1997.688400][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.688400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.688400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.688400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.688400][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.688400][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.688400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.688400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.688400][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.688400][ T72] netlink_unicast+0x449/0x710 [ 1997.688400][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.688400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.688400][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.688400][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.688400][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.688400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.688400][ T72] [ 1997.690393][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1997.690393][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.690393][ T72] ipv6_find_idev+0x102/0x170 [ 1997.690393][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.690393][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.690393][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.690393][ T72] netlink_unicast+0x449/0x710 [ 1997.690393][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.690393][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.690393][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.690393][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.690393][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.690393][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.690393][ T72] [ 1997.692494][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 1997.692494][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.692494][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.692494][ T72] ipv6_find_idev+0x102/0x170 [ 1997.692494][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.692494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.692494][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.692494][ T72] netlink_unicast+0x449/0x710 [ 1997.692494][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.692494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.692494][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.692494][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.692494][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.692494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.692494][ T72] [ 1997.694231][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 1997.694550][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1997.694550][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.694550][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.694550][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.694550][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.694550][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.694550][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.694550][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.694550][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.694550][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.694550][ T72] netlink_unicast+0x449/0x710 [ 1997.694550][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.694550][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.694550][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.694550][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.694550][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.694550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.694550][ T72] [ 1997.696548][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1997.696548][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.696548][ T72] ipv6_find_idev+0x102/0x170 [ 1997.696548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.696548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.696548][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.696548][ T72] netlink_unicast+0x449/0x710 [ 1997.696548][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.696548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.696548][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.696548][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.696548][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.696548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.696548][ T72] [ 1997.698074][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 1997.698074][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.698074][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.698074][ T72] ipv6_find_idev+0x102/0x170 [ 1997.698074][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.698074][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.698074][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.698074][ T72] netlink_unicast+0x449/0x710 [ 1997.698074][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.698074][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.698074][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.698074][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.698074][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.698074][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.698074][ T72] [ 1997.699796][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 1997.700111][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1997.700111][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.700111][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.700111][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.700111][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.700111][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.700111][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.700111][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.700111][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.700111][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.700111][ T72] netlink_unicast+0x449/0x710 [ 1997.700111][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.700111][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.700111][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.700111][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.700111][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.700111][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.700111][ T72] [ 1997.702112][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1997.702112][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.702112][ T72] ipv6_find_idev+0x102/0x170 [ 1997.702112][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.702112][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.702112][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.702112][ T72] netlink_unicast+0x449/0x710 [ 1997.702112][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.702112][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.702112][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.702112][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.702112][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.702112][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.702112][ T72] [ 1997.703770][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 1997.703770][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.703770][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.703770][ T72] ipv6_find_idev+0x102/0x170 [ 1997.703770][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.703770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.703770][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.703770][ T72] netlink_unicast+0x449/0x710 [ 1997.703770][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.703770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.703770][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.703770][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.703770][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.703770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.703770][ T72] [ 1997.705626][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 1997.705948][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1997.705948][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.705948][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.705948][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.705948][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.705948][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.705948][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.705948][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.705948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.705948][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.705948][ T72] netlink_unicast+0x449/0x710 [ 1997.705948][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.705948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.705948][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.705948][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.705948][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.705948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.705948][ T72] [ 1997.708069][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1997.708069][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.708069][ T72] ipv6_find_idev+0x102/0x170 [ 1997.708069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.708069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.708069][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.708069][ T72] netlink_unicast+0x449/0x710 [ 1997.708069][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.708069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.708069][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.708069][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.708069][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.708069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.708069][ T72] [ 1997.709677][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 1997.709677][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.709677][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.709677][ T72] ipv6_find_idev+0x102/0x170 [ 1997.709677][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.709677][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.709677][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.709677][ T72] netlink_unicast+0x449/0x710 [ 1997.709677][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.709677][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.709677][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.709677][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.709677][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.709677][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.709677][ T72] [ 1997.711932][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 1997.712244][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1997.712244][ T72] netdev_get_by_index+0x5e/0x80 [ 1997.712244][ T72] fib6_nh_init+0x3d8/0x15b0 [ 1997.712244][ T72] ip6_route_info_create+0xf18/0x17d0 [ 1997.712244][ T72] addrconf_f6i_alloc+0x244/0x410 [ 1997.712244][ T72] ipv6_add_addr+0x411/0x2000 [ 1997.712244][ T72] inet6_addr_add+0x30e/0xa40 [ 1997.712244][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 1997.712244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.712244][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.712244][ T72] netlink_unicast+0x449/0x710 [ 1997.712244][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.712244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.712244][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.712244][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.712244][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.712244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.712244][ T72] [ 1997.714291][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1997.714291][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 1997.714291][ T72] ipv6_find_idev+0x102/0x170 [ 1997.714291][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.714291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.714291][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.714291][ T72] netlink_unicast+0x449/0x710 [ 1997.714291][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.714291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.714291][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.714291][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.714291][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.714291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.714291][ T72] [ 1997.715956][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 1997.715956][ T72] neigh_parms_alloc+0x1e5/0x510 [ 1997.715956][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 1997.715956][ T72] ipv6_find_idev+0x102/0x170 [ 1997.715956][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 1997.715956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1997.715956][ T72] netlink_rcv_skb+0x130/0x360 [ 1997.715956][ T72] netlink_unicast+0x449/0x710 [ 1997.715956][ T72] netlink_sendmsg+0x723/0xbe0 [ 1997.715956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 1997.715956][ T72] ___sys_sendmsg+0xee/0x170 [ 1997.715956][ T72] __sys_sendmsg+0xcd/0x170 [ 1997.715956][ T72] do_syscall_64+0xc6/0x1e0 [ 1997.715956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1997.715956][ T72] [ 2008.126960][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2008.127383][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2008.127383][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.127383][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.127383][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.127383][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.127383][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.127383][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.127383][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.127383][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.127383][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.127383][ T72] netlink_unicast+0x449/0x710 [ 2008.127383][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.127383][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.127383][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.127383][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.127383][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.127383][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.127383][ T72] [ 2008.129541][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2008.129541][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.129541][ T72] ipv6_find_idev+0x102/0x170 [ 2008.129541][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.129541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.129541][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.129541][ T72] netlink_unicast+0x449/0x710 [ 2008.129541][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.129541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.129541][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.129541][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.129541][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.129541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.129541][ T72] [ 2008.131223][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2008.131223][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.131223][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.131223][ T72] ipv6_find_idev+0x102/0x170 [ 2008.131223][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.131223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.131223][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.131223][ T72] netlink_unicast+0x449/0x710 [ 2008.131223][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.131223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.131223][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.131223][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.131223][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.131223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.131223][ T72] [ 2008.133065][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2008.133355][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2008.133355][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.133355][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.133355][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.133355][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.133355][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.133355][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.133355][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.133355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.133355][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.133355][ T72] netlink_unicast+0x449/0x710 [ 2008.133355][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.133355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.133355][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.133355][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.133355][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.133355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.133355][ T72] [ 2008.135494][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2008.135494][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.135494][ T72] ipv6_find_idev+0x102/0x170 [ 2008.135494][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.135494][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.135494][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.135494][ T72] netlink_unicast+0x449/0x710 [ 2008.135494][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.135494][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.135494][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.135494][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.135494][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.135494][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.135494][ T72] [ 2008.137005][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2008.137005][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.137005][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.137005][ T72] ipv6_find_idev+0x102/0x170 [ 2008.137005][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.137005][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.137005][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.137005][ T72] netlink_unicast+0x449/0x710 [ 2008.137005][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.137005][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.137005][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.137005][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.137005][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.137005][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.137005][ T72] [ 2008.139031][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2008.139292][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2008.139292][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.139292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.139292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.139292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.139292][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.139292][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.139292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.139292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.139292][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.139292][ T72] netlink_unicast+0x449/0x710 [ 2008.139292][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.139292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.139292][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.139292][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.139292][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.139292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.139292][ T72] [ 2008.141252][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2008.141252][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.141252][ T72] ipv6_find_idev+0x102/0x170 [ 2008.141252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.141252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.141252][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.141252][ T72] netlink_unicast+0x449/0x710 [ 2008.141252][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.141252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.141252][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.141252][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.141252][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.141252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.141252][ T72] [ 2008.142772][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2008.142772][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.142772][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.142772][ T72] ipv6_find_idev+0x102/0x170 [ 2008.142772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.142772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.142772][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.142772][ T72] netlink_unicast+0x449/0x710 [ 2008.142772][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.142772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.142772][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.142772][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.142772][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.142772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.142772][ T72] [ 2008.144466][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2008.144722][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2008.144722][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.144722][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.144722][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.144722][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.144722][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.144722][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.144722][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.144722][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.144722][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.144722][ T72] netlink_unicast+0x449/0x710 [ 2008.144722][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.144722][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.144722][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.144722][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.144722][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.144722][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.144722][ T72] [ 2008.146689][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2008.146689][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.146689][ T72] ipv6_find_idev+0x102/0x170 [ 2008.146689][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.146689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.146689][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.146689][ T72] netlink_unicast+0x449/0x710 [ 2008.146689][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.146689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.146689][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.146689][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.146689][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.146689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.146689][ T72] [ 2008.148199][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2008.148199][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.148199][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.148199][ T72] ipv6_find_idev+0x102/0x170 [ 2008.148199][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.148199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.148199][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.148199][ T72] netlink_unicast+0x449/0x710 [ 2008.148199][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.148199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.148199][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.148199][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.148199][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.148199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.148199][ T72] [ 2008.150273][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2008.150530][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2008.150530][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.150530][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.150530][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.150530][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.150530][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.150530][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.150530][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.150530][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.150530][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.150530][ T72] netlink_unicast+0x449/0x710 [ 2008.150530][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.150530][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.150530][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.150530][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.150530][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.150530][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.150530][ T72] [ 2008.152513][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2008.152513][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.152513][ T72] ipv6_find_idev+0x102/0x170 [ 2008.152513][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.152513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.152513][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.152513][ T72] netlink_unicast+0x449/0x710 [ 2008.152513][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.152513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.152513][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.152513][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.152513][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.152513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.152513][ T72] [ 2008.154024][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2008.154024][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.154024][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.154024][ T72] ipv6_find_idev+0x102/0x170 [ 2008.154024][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.154024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.154024][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.154024][ T72] netlink_unicast+0x449/0x710 [ 2008.154024][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.154024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.154024][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.154024][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.154024][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.154024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.154024][ T72] [ 2008.155716][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2008.156037][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2008.156037][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.156037][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.156037][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.156037][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.156037][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.156037][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.156037][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.156037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.156037][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.156037][ T72] netlink_unicast+0x449/0x710 [ 2008.156037][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.156037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.156037][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.156037][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.156037][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.156037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.156037][ T72] [ 2008.158115][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2008.158115][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.158115][ T72] ipv6_find_idev+0x102/0x170 [ 2008.158115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.158115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.158115][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.158115][ T72] netlink_unicast+0x449/0x710 [ 2008.158115][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.158115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.158115][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.158115][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.158115][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.158115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.158115][ T72] [ 2008.159816][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2008.159816][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.159816][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.159816][ T72] ipv6_find_idev+0x102/0x170 [ 2008.159816][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.159816][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.159816][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.159816][ T72] netlink_unicast+0x449/0x710 [ 2008.159816][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.159816][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.159816][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.159816][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.159816][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.159816][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.159816][ T72] [ 2008.161784][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2008.162047][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2008.162047][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.162047][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.162047][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.162047][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.162047][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.162047][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.162047][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.162047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.162047][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.162047][ T72] netlink_unicast+0x449/0x710 [ 2008.162047][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.162047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.162047][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.162047][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.162047][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.162047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.162047][ T72] [ 2008.164236][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2008.164236][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.164236][ T72] ipv6_find_idev+0x102/0x170 [ 2008.164236][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.164236][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.164236][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.164236][ T72] netlink_unicast+0x449/0x710 [ 2008.164236][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.164236][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.164236][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.164236][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.164236][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.164236][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.164236][ T72] [ 2008.165924][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2008.165924][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.165924][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.165924][ T72] ipv6_find_idev+0x102/0x170 [ 2008.165924][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.165924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.165924][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.165924][ T72] netlink_unicast+0x449/0x710 [ 2008.165924][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.165924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.165924][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.165924][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.165924][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.165924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.165924][ T72] [ 2008.167795][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2008.168055][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2008.168055][ T72] netdev_get_by_index+0x5e/0x80 [ 2008.168055][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2008.168055][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2008.168055][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2008.168055][ T72] ipv6_add_addr+0x411/0x2000 [ 2008.168055][ T72] inet6_addr_add+0x30e/0xa40 [ 2008.168055][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2008.168055][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.168055][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.168055][ T72] netlink_unicast+0x449/0x710 [ 2008.168055][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.168055][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.168055][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.168055][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.168055][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.168055][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.168055][ T72] [ 2008.170264][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2008.170264][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2008.170264][ T72] ipv6_find_idev+0x102/0x170 [ 2008.170264][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.170264][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.170264][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.170264][ T72] netlink_unicast+0x449/0x710 [ 2008.170264][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.170264][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.170264][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.170264][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.170264][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.170264][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.170264][ T72] [ 2008.172027][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2008.172027][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2008.172027][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2008.172027][ T72] ipv6_find_idev+0x102/0x170 [ 2008.172027][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2008.172027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2008.172027][ T72] netlink_rcv_skb+0x130/0x360 [ 2008.172027][ T72] netlink_unicast+0x449/0x710 [ 2008.172027][ T72] netlink_sendmsg+0x723/0xbe0 [ 2008.172027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2008.172027][ T72] ___sys_sendmsg+0xee/0x170 [ 2008.172027][ T72] __sys_sendmsg+0xcd/0x170 [ 2008.172027][ T72] do_syscall_64+0xc6/0x1e0 [ 2008.172027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2008.172027][ T72] [ 2018.350785][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2018.351185][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2018.351185][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.351185][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.351185][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.351185][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.351185][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.351185][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.351185][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.351185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.351185][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.351185][ T72] netlink_unicast+0x449/0x710 [ 2018.351185][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.351185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.351185][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.351185][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.351185][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.351185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.351185][ T72] [ 2018.353205][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2018.353205][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.353205][ T72] ipv6_find_idev+0x102/0x170 [ 2018.353205][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.353205][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.353205][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.353205][ T72] netlink_unicast+0x449/0x710 [ 2018.353205][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.353205][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.353205][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.353205][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.353205][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.353205][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.353205][ T72] [ 2018.354726][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2018.354726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.354726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.354726][ T72] ipv6_find_idev+0x102/0x170 [ 2018.354726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.354726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.354726][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.354726][ T72] netlink_unicast+0x449/0x710 [ 2018.354726][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.354726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.354726][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.354726][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.354726][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.354726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.354726][ T72] [ 2018.356471][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2018.356750][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2018.356750][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.356750][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.356750][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.356750][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.356750][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.356750][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.356750][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.356750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.356750][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.356750][ T72] netlink_unicast+0x449/0x710 [ 2018.356750][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.356750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.356750][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.356750][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.356750][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.356750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.356750][ T72] [ 2018.358749][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2018.358749][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.358749][ T72] ipv6_find_idev+0x102/0x170 [ 2018.358749][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.358749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.358749][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.358749][ T72] netlink_unicast+0x449/0x710 [ 2018.358749][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.358749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.358749][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.358749][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.358749][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.358749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.358749][ T72] [ 2018.360262][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2018.360262][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.360262][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.360262][ T72] ipv6_find_idev+0x102/0x170 [ 2018.360262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.360262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.360262][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.360262][ T72] netlink_unicast+0x449/0x710 [ 2018.360262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.360262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.360262][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.360262][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.360262][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.360262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.360262][ T72] [ 2018.361938][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2018.362198][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2018.362198][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.362198][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.362198][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.362198][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.362198][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.362198][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.362198][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.362198][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.362198][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.362198][ T72] netlink_unicast+0x449/0x710 [ 2018.362198][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.362198][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.362198][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.362198][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.362198][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.362198][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.362198][ T72] [ 2018.364192][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2018.364192][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.364192][ T72] ipv6_find_idev+0x102/0x170 [ 2018.364192][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.364192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.364192][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.364192][ T72] netlink_unicast+0x449/0x710 [ 2018.364192][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.364192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.364192][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.364192][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.364192][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.364192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.364192][ T72] [ 2018.365766][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2018.365766][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.365766][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.365766][ T72] ipv6_find_idev+0x102/0x170 [ 2018.365766][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.365766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.365766][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.365766][ T72] netlink_unicast+0x449/0x710 [ 2018.365766][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.365766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.365766][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.365766][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.365766][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.365766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.365766][ T72] [ 2018.367470][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2018.367748][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2018.367748][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.367748][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.367748][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.367748][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.367748][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.367748][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.367748][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.367748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.367748][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.367748][ T72] netlink_unicast+0x449/0x710 [ 2018.367748][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.367748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.367748][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.367748][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.367748][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.367748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.367748][ T72] [ 2018.369768][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2018.369768][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.369768][ T72] ipv6_find_idev+0x102/0x170 [ 2018.369768][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.369768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.369768][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.369768][ T72] netlink_unicast+0x449/0x710 [ 2018.369768][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.369768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.369768][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.369768][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.369768][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.369768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.369768][ T72] [ 2018.371312][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2018.371312][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.371312][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.371312][ T72] ipv6_find_idev+0x102/0x170 [ 2018.371312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.371312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.371312][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.371312][ T72] netlink_unicast+0x449/0x710 [ 2018.371312][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.371312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.371312][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.371312][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.371312][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.371312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.371312][ T72] [ 2018.373441][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2018.373707][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2018.373707][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.373707][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.373707][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.373707][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.373707][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.373707][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.373707][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.373707][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.373707][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.373707][ T72] netlink_unicast+0x449/0x710 [ 2018.373707][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.373707][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.373707][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.373707][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.373707][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.373707][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.373707][ T72] [ 2018.375715][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2018.375715][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.375715][ T72] ipv6_find_idev+0x102/0x170 [ 2018.375715][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.375715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.375715][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.375715][ T72] netlink_unicast+0x449/0x710 [ 2018.375715][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.375715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.375715][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.375715][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.375715][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.375715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.375715][ T72] [ 2018.377240][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2018.377240][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.377240][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.377240][ T72] ipv6_find_idev+0x102/0x170 [ 2018.377240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.377240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.377240][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.377240][ T72] netlink_unicast+0x449/0x710 [ 2018.377240][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.377240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.377240][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.377240][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.377240][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.377240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.377240][ T72] [ 2018.378961][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2018.379223][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2018.379223][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.379223][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.379223][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.379223][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.379223][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.379223][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.379223][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.379223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.379223][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.379223][ T72] netlink_unicast+0x449/0x710 [ 2018.379223][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.379223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.379223][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.379223][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.379223][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.379223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.379223][ T72] [ 2018.381275][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2018.381275][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.381275][ T72] ipv6_find_idev+0x102/0x170 [ 2018.381275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.381275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.381275][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.381275][ T72] netlink_unicast+0x449/0x710 [ 2018.381275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.381275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.381275][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.381275][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.381275][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.381275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.381275][ T72] [ 2018.382940][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2018.382940][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.382940][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.382940][ T72] ipv6_find_idev+0x102/0x170 [ 2018.382940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.382940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.382940][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.382940][ T72] netlink_unicast+0x449/0x710 [ 2018.382940][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.382940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.382940][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.382940][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.382940][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.382940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.382940][ T72] [ 2018.384816][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2018.385089][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2018.385089][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.385089][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.385089][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.385089][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.385089][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.385089][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.385089][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.385089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.385089][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.385089][ T72] netlink_unicast+0x449/0x710 [ 2018.385089][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.385089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.385089][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.385089][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.385089][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.385089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.385089][ T72] [ 2018.387212][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2018.387212][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.387212][ T72] ipv6_find_idev+0x102/0x170 [ 2018.387212][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.387212][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.387212][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.387212][ T72] netlink_unicast+0x449/0x710 [ 2018.387212][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.387212][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.387212][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.387212][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.387212][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.387212][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.387212][ T72] [ 2018.388833][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2018.388833][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.388833][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.388833][ T72] ipv6_find_idev+0x102/0x170 [ 2018.388833][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.388833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.388833][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.388833][ T72] netlink_unicast+0x449/0x710 [ 2018.388833][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.388833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.388833][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.388833][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.388833][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.388833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.388833][ T72] [ 2018.390692][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2018.391013][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2018.391013][ T72] netdev_get_by_index+0x5e/0x80 [ 2018.391013][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2018.391013][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2018.391013][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2018.391013][ T72] ipv6_add_addr+0x411/0x2000 [ 2018.391013][ T72] inet6_addr_add+0x30e/0xa40 [ 2018.391013][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2018.391013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.391013][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.391013][ T72] netlink_unicast+0x449/0x710 [ 2018.391013][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.391013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.391013][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.391013][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.391013][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.391013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.391013][ T72] [ 2018.393095][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2018.393095][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2018.393095][ T72] ipv6_find_idev+0x102/0x170 [ 2018.393095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.393095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.393095][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.393095][ T72] netlink_unicast+0x449/0x710 [ 2018.393095][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.393095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.393095][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.393095][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.393095][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.393095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.393095][ T72] [ 2018.394768][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2018.394768][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2018.394768][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2018.394768][ T72] ipv6_find_idev+0x102/0x170 [ 2018.394768][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2018.394768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2018.394768][ T72] netlink_rcv_skb+0x130/0x360 [ 2018.394768][ T72] netlink_unicast+0x449/0x710 [ 2018.394768][ T72] netlink_sendmsg+0x723/0xbe0 [ 2018.394768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2018.394768][ T72] ___sys_sendmsg+0xee/0x170 [ 2018.394768][ T72] __sys_sendmsg+0xcd/0x170 [ 2018.394768][ T72] do_syscall_64+0xc6/0x1e0 [ 2018.394768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2018.394768][ T72] [ 2028.582884][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2028.583353][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2028.583353][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.583353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.583353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.583353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.583353][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.583353][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.583353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.583353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.583353][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.583353][ T72] netlink_unicast+0x449/0x710 [ 2028.583353][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.583353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.583353][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.583353][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.583353][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.583353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.583353][ T72] [ 2028.585368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2028.585368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.585368][ T72] ipv6_find_idev+0x102/0x170 [ 2028.585368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.585368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.585368][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.585368][ T72] netlink_unicast+0x449/0x710 [ 2028.585368][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.585368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.585368][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.585368][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.585368][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.585368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.585368][ T72] [ 2028.586903][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2028.586903][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.586903][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.586903][ T72] ipv6_find_idev+0x102/0x170 [ 2028.586903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.586903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.586903][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.586903][ T72] netlink_unicast+0x449/0x710 [ 2028.586903][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.586903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.586903][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.586903][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.586903][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.586903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.586903][ T72] [ 2028.588582][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2028.588862][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2028.588862][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.588862][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.588862][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.588862][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.588862][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.588862][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.588862][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.588862][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.588862][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.588862][ T72] netlink_unicast+0x449/0x710 [ 2028.588862][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.588862][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.588862][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.588862][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.588862][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.588862][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.588862][ T72] [ 2028.590833][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2028.590833][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.590833][ T72] ipv6_find_idev+0x102/0x170 [ 2028.590833][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.590833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.590833][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.590833][ T72] netlink_unicast+0x449/0x710 [ 2028.590833][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.590833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.590833][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.590833][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.590833][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.590833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.590833][ T72] [ 2028.592367][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2028.592367][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.592367][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.592367][ T72] ipv6_find_idev+0x102/0x170 [ 2028.592367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.592367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.592367][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.592367][ T72] netlink_unicast+0x449/0x710 [ 2028.592367][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.592367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.592367][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.592367][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.592367][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.592367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.592367][ T72] [ 2028.594036][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2028.594302][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2028.594302][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.594302][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.594302][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.594302][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.594302][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.594302][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.594302][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.594302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.594302][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.594302][ T72] netlink_unicast+0x449/0x710 [ 2028.594302][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.594302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.594302][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.594302][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.594302][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.594302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.594302][ T72] [ 2028.596287][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2028.596287][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.596287][ T72] ipv6_find_idev+0x102/0x170 [ 2028.596287][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.596287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.596287][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.596287][ T72] netlink_unicast+0x449/0x710 [ 2028.596287][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.596287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.596287][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.596287][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.596287][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.596287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.596287][ T72] [ 2028.597826][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2028.597826][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.597826][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.597826][ T72] ipv6_find_idev+0x102/0x170 [ 2028.597826][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.597826][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.597826][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.597826][ T72] netlink_unicast+0x449/0x710 [ 2028.597826][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.597826][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.597826][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.597826][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.597826][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.597826][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.597826][ T72] [ 2028.599524][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2028.600233][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2028.600233][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.600233][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.600233][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.600233][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.600233][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.600233][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.600233][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.600233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.600233][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.600233][ T72] netlink_unicast+0x449/0x710 [ 2028.600233][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.600233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.600233][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.600233][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.600233][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.600233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.600233][ T72] [ 2028.602265][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2028.602265][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.602265][ T72] ipv6_find_idev+0x102/0x170 [ 2028.602265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.602265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.602265][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.602265][ T72] netlink_unicast+0x449/0x710 [ 2028.602265][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.602265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.602265][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.602265][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.602265][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.602265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.602265][ T72] [ 2028.603784][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2028.603784][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.603784][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.603784][ T72] ipv6_find_idev+0x102/0x170 [ 2028.603784][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.603784][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.603784][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.603784][ T72] netlink_unicast+0x449/0x710 [ 2028.603784][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.603784][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.603784][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.603784][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.603784][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.603784][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.603784][ T72] [ 2028.605588][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2028.605902][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2028.605902][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.605902][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.605902][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.605902][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.605902][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.605902][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.605902][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.605902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.605902][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.605902][ T72] netlink_unicast+0x449/0x710 [ 2028.605902][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.605902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.605902][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.605902][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.605902][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.605902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.605902][ T72] [ 2028.608412][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2028.608412][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.608412][ T72] ipv6_find_idev+0x102/0x170 [ 2028.608412][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.608412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.608412][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.608412][ T72] netlink_unicast+0x449/0x710 [ 2028.608412][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.608412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.608412][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.608412][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.608412][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.608412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.608412][ T72] [ 2028.609927][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2028.609927][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.609927][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.609927][ T72] ipv6_find_idev+0x102/0x170 [ 2028.609927][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.609927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.609927][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.609927][ T72] netlink_unicast+0x449/0x710 [ 2028.609927][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.609927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.609927][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.609927][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.609927][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.609927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.609927][ T72] [ 2028.611633][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2028.611960][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2028.611960][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.611960][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.611960][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.611960][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.611960][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.611960][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.611960][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.611960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.611960][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.611960][ T72] netlink_unicast+0x449/0x710 [ 2028.611960][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.611960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.611960][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.611960][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.611960][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.611960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.611960][ T72] [ 2028.613920][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2028.613920][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.613920][ T72] ipv6_find_idev+0x102/0x170 [ 2028.613920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.613920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.613920][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.613920][ T72] netlink_unicast+0x449/0x710 [ 2028.613920][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.613920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.613920][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.613920][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.613920][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.613920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.613920][ T72] [ 2028.615622][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2028.615622][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.615622][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.615622][ T72] ipv6_find_idev+0x102/0x170 [ 2028.615622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.615622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.615622][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.615622][ T72] netlink_unicast+0x449/0x710 [ 2028.615622][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.615622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.615622][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.615622][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.615622][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.615622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.615622][ T72] [ 2028.617587][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2028.617905][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2028.617905][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.617905][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.617905][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.617905][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.617905][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.617905][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.617905][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.617905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.617905][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.617905][ T72] netlink_unicast+0x449/0x710 [ 2028.617905][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.617905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.617905][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.617905][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.617905][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.617905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.617905][ T72] [ 2028.620049][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2028.620049][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.620049][ T72] ipv6_find_idev+0x102/0x170 [ 2028.620049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.620049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.620049][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.620049][ T72] netlink_unicast+0x449/0x710 [ 2028.620049][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.620049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.620049][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.620049][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.620049][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.620049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.620049][ T72] [ 2028.621760][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2028.621760][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.621760][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.621760][ T72] ipv6_find_idev+0x102/0x170 [ 2028.621760][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.621760][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.621760][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.621760][ T72] netlink_unicast+0x449/0x710 [ 2028.621760][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.621760][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.621760][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.621760][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.621760][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.621760][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.621760][ T72] [ 2028.623686][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2028.624010][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2028.624010][ T72] netdev_get_by_index+0x5e/0x80 [ 2028.624010][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2028.624010][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2028.624010][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2028.624010][ T72] ipv6_add_addr+0x411/0x2000 [ 2028.624010][ T72] inet6_addr_add+0x30e/0xa40 [ 2028.624010][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2028.624010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.624010][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.624010][ T72] netlink_unicast+0x449/0x710 [ 2028.624010][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.624010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.624010][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.624010][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.624010][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.624010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.624010][ T72] [ 2028.626153][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2028.626153][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2028.626153][ T72] ipv6_find_idev+0x102/0x170 [ 2028.626153][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.626153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.626153][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.626153][ T72] netlink_unicast+0x449/0x710 [ 2028.626153][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.626153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.626153][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.626153][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.626153][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.626153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.626153][ T72] [ 2028.627906][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2028.627906][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2028.627906][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2028.627906][ T72] ipv6_find_idev+0x102/0x170 [ 2028.627906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2028.627906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2028.627906][ T72] netlink_rcv_skb+0x130/0x360 [ 2028.627906][ T72] netlink_unicast+0x449/0x710 [ 2028.627906][ T72] netlink_sendmsg+0x723/0xbe0 [ 2028.627906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2028.627906][ T72] ___sys_sendmsg+0xee/0x170 [ 2028.627906][ T72] __sys_sendmsg+0xcd/0x170 [ 2028.627906][ T72] do_syscall_64+0xc6/0x1e0 [ 2028.627906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2028.627906][ T72] [ 2038.862780][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2038.863192][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2038.863192][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.863192][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.863192][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.863192][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.863192][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.863192][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.863192][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.863192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.863192][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.863192][ T72] netlink_unicast+0x449/0x710 [ 2038.863192][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.863192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.863192][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.863192][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.863192][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.863192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.863192][ T72] [ 2038.865180][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2038.865180][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.865180][ T72] ipv6_find_idev+0x102/0x170 [ 2038.865180][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.865180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.865180][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.865180][ T72] netlink_unicast+0x449/0x710 [ 2038.865180][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.865180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.865180][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.865180][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.865180][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.865180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.865180][ T72] [ 2038.866696][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2038.866696][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.866696][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.866696][ T72] ipv6_find_idev+0x102/0x170 [ 2038.866696][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.866696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.866696][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.866696][ T72] netlink_unicast+0x449/0x710 [ 2038.866696][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.866696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.866696][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.866696][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.866696][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.866696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.866696][ T72] [ 2038.868363][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2038.868630][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2038.868630][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.868630][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.868630][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.868630][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.868630][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.868630][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.868630][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.868630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.868630][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.868630][ T72] netlink_unicast+0x449/0x710 [ 2038.868630][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.868630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.868630][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.868630][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.868630][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.868630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.868630][ T72] [ 2038.870599][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2038.870599][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.870599][ T72] ipv6_find_idev+0x102/0x170 [ 2038.870599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.870599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.870599][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.870599][ T72] netlink_unicast+0x449/0x710 [ 2038.870599][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.870599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.870599][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.870599][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.870599][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.870599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.870599][ T72] [ 2038.872154][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2038.872154][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.872154][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.872154][ T72] ipv6_find_idev+0x102/0x170 [ 2038.872154][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.872154][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.872154][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.872154][ T72] netlink_unicast+0x449/0x710 [ 2038.872154][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.872154][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.872154][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.872154][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.872154][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.872154][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.872154][ T72] [ 2038.873821][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2038.874082][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2038.874082][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.874082][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.874082][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.874082][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.874082][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.874082][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.874082][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.874082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.874082][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.874082][ T72] netlink_unicast+0x449/0x710 [ 2038.874082][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.874082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.874082][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.874082][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.874082][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.874082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.874082][ T72] [ 2038.876050][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2038.876050][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.876050][ T72] ipv6_find_idev+0x102/0x170 [ 2038.876050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.876050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.876050][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.876050][ T72] netlink_unicast+0x449/0x710 [ 2038.876050][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.876050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.876050][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.876050][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.876050][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.876050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.876050][ T72] [ 2038.877573][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2038.877573][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.877573][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.877573][ T72] ipv6_find_idev+0x102/0x170 [ 2038.877573][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.877573][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.877573][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.877573][ T72] netlink_unicast+0x449/0x710 [ 2038.877573][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.877573][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.877573][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.877573][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.877573][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.877573][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.877573][ T72] [ 2038.879228][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2038.879485][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2038.879485][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.879485][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.879485][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.879485][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.879485][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.879485][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.879485][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.879485][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.879485][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.879485][ T72] netlink_unicast+0x449/0x710 [ 2038.879485][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.879485][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.879485][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.879485][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.879485][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.879485][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.879485][ T72] [ 2038.881469][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2038.881469][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.881469][ T72] ipv6_find_idev+0x102/0x170 [ 2038.881469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.881469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.881469][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.881469][ T72] netlink_unicast+0x449/0x710 [ 2038.881469][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.881469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.881469][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.881469][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.881469][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.881469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.881469][ T72] [ 2038.882999][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2038.882999][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.882999][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.882999][ T72] ipv6_find_idev+0x102/0x170 [ 2038.882999][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.882999][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.882999][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.882999][ T72] netlink_unicast+0x449/0x710 [ 2038.882999][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.882999][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.882999][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.882999][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.882999][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.882999][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.882999][ T72] [ 2038.885090][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2038.885368][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2038.885368][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.885368][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.885368][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.885368][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.885368][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.885368][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.885368][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.885368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.885368][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.885368][ T72] netlink_unicast+0x449/0x710 [ 2038.885368][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.885368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.885368][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.885368][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.885368][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.885368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.885368][ T72] [ 2038.887351][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2038.887351][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.887351][ T72] ipv6_find_idev+0x102/0x170 [ 2038.887351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.887351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.887351][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.887351][ T72] netlink_unicast+0x449/0x710 [ 2038.887351][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.887351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.887351][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.887351][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.887351][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.887351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.887351][ T72] [ 2038.888889][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2038.888889][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.888889][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.888889][ T72] ipv6_find_idev+0x102/0x170 [ 2038.888889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.888889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.888889][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.888889][ T72] netlink_unicast+0x449/0x710 [ 2038.888889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.888889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.888889][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.888889][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.888889][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.888889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.888889][ T72] [ 2038.890608][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2038.890926][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2038.890926][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.890926][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.890926][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.890926][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.890926][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.890926][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.890926][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.890926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.890926][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.890926][ T72] netlink_unicast+0x449/0x710 [ 2038.890926][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.890926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.890926][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.890926][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.890926][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.890926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.890926][ T72] [ 2038.893059][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2038.893059][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.893059][ T72] ipv6_find_idev+0x102/0x170 [ 2038.893059][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.893059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.893059][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.893059][ T72] netlink_unicast+0x449/0x710 [ 2038.893059][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.893059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.893059][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.893059][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.893059][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.893059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.893059][ T72] [ 2038.894775][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2038.894775][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.894775][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.894775][ T72] ipv6_find_idev+0x102/0x170 [ 2038.894775][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.894775][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.894775][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.894775][ T72] netlink_unicast+0x449/0x710 [ 2038.894775][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.894775][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.894775][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.894775][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.894775][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.894775][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.894775][ T72] [ 2038.896662][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2038.896974][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2038.896974][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.896974][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.896974][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.896974][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.896974][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.896974][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.896974][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.896974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.896974][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.896974][ T72] netlink_unicast+0x449/0x710 [ 2038.896974][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.896974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.896974][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.896974][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.896974][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.896974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.896974][ T72] [ 2038.899170][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2038.899170][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.899170][ T72] ipv6_find_idev+0x102/0x170 [ 2038.899170][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.899170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.899170][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.899170][ T72] netlink_unicast+0x449/0x710 [ 2038.899170][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.899170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.899170][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.899170][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.899170][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.899170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.899170][ T72] [ 2038.900857][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2038.900857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.900857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.900857][ T72] ipv6_find_idev+0x102/0x170 [ 2038.900857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.900857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.900857][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.900857][ T72] netlink_unicast+0x449/0x710 [ 2038.900857][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.900857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.900857][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.900857][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.900857][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.900857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.900857][ T72] [ 2038.902780][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2038.903066][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2038.903066][ T72] netdev_get_by_index+0x5e/0x80 [ 2038.903066][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2038.903066][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2038.903066][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2038.903066][ T72] ipv6_add_addr+0x411/0x2000 [ 2038.903066][ T72] inet6_addr_add+0x30e/0xa40 [ 2038.903066][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2038.903066][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.903066][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.903066][ T72] netlink_unicast+0x449/0x710 [ 2038.903066][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.903066][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.903066][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.903066][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.903066][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.903066][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.903066][ T72] [ 2038.905293][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2038.905293][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2038.905293][ T72] ipv6_find_idev+0x102/0x170 [ 2038.905293][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.905293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.905293][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.905293][ T72] netlink_unicast+0x449/0x710 [ 2038.905293][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.905293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.905293][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.905293][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.905293][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.905293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.905293][ T72] [ 2038.907029][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2038.907029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2038.907029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2038.907029][ T72] ipv6_find_idev+0x102/0x170 [ 2038.907029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2038.907029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2038.907029][ T72] netlink_rcv_skb+0x130/0x360 [ 2038.907029][ T72] netlink_unicast+0x449/0x710 [ 2038.907029][ T72] netlink_sendmsg+0x723/0xbe0 [ 2038.907029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2038.907029][ T72] ___sys_sendmsg+0xee/0x170 [ 2038.907029][ T72] __sys_sendmsg+0xcd/0x170 [ 2038.907029][ T72] do_syscall_64+0xc6/0x1e0 [ 2038.907029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2038.907029][ T72] [ 2049.006796][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2049.007277][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2049.007277][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.007277][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.007277][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.007277][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.007277][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.007277][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.007277][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.007277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.007277][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.007277][ T72] netlink_unicast+0x449/0x710 [ 2049.007277][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.007277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.007277][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.007277][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.007277][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.007277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.007277][ T72] [ 2049.009258][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2049.009258][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.009258][ T72] ipv6_find_idev+0x102/0x170 [ 2049.009258][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.009258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.009258][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.009258][ T72] netlink_unicast+0x449/0x710 [ 2049.009258][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.009258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.009258][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.009258][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.009258][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.009258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.009258][ T72] [ 2049.010767][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2049.010767][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.010767][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.010767][ T72] ipv6_find_idev+0x102/0x170 [ 2049.010767][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.010767][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.010767][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.010767][ T72] netlink_unicast+0x449/0x710 [ 2049.010767][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.010767][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.010767][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.010767][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.010767][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.010767][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.010767][ T72] [ 2049.012435][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2049.012695][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2049.012695][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.012695][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.012695][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.012695][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.012695][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.012695][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.012695][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.012695][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.012695][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.012695][ T72] netlink_unicast+0x449/0x710 [ 2049.012695][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.012695][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.012695][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.012695][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.012695][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.012695][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.012695][ T72] [ 2049.014650][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2049.014650][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.014650][ T72] ipv6_find_idev+0x102/0x170 [ 2049.014650][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.014650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.014650][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.014650][ T72] netlink_unicast+0x449/0x710 [ 2049.014650][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.014650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.014650][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.014650][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.014650][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.014650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.014650][ T72] [ 2049.016161][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2049.016161][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.016161][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.016161][ T72] ipv6_find_idev+0x102/0x170 [ 2049.016161][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.016161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.016161][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.016161][ T72] netlink_unicast+0x449/0x710 [ 2049.016161][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.016161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.016161][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.016161][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.016161][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.016161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.016161][ T72] [ 2049.017802][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2049.018062][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2049.018062][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.018062][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.018062][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.018062][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.018062][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.018062][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.018062][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.018062][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.018062][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.018062][ T72] netlink_unicast+0x449/0x710 [ 2049.018062][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.018062][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.018062][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.018062][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.018062][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.018062][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.018062][ T72] [ 2049.020045][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2049.020045][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.020045][ T72] ipv6_find_idev+0x102/0x170 [ 2049.020045][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.020045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.020045][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.020045][ T72] netlink_unicast+0x449/0x710 [ 2049.020045][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.020045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.020045][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.020045][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.020045][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.020045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.020045][ T72] [ 2049.021572][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2049.021572][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.021572][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.021572][ T72] ipv6_find_idev+0x102/0x170 [ 2049.021572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.021572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.021572][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.021572][ T72] netlink_unicast+0x449/0x710 [ 2049.021572][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.021572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.021572][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.021572][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.021572][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.021572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.021572][ T72] [ 2049.023229][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2049.023489][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2049.023489][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.023489][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.023489][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.023489][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.023489][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.023489][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.023489][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.023489][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.023489][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.023489][ T72] netlink_unicast+0x449/0x710 [ 2049.023489][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.023489][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.023489][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.023489][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.023489][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.023489][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.023489][ T72] [ 2049.025438][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2049.025438][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.025438][ T72] ipv6_find_idev+0x102/0x170 [ 2049.025438][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.025438][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.025438][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.025438][ T72] netlink_unicast+0x449/0x710 [ 2049.025438][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.025438][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.025438][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.025438][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.025438][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.025438][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.025438][ T72] [ 2049.026952][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2049.026952][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.026952][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.026952][ T72] ipv6_find_idev+0x102/0x170 [ 2049.026952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.026952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.026952][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.026952][ T72] netlink_unicast+0x449/0x710 [ 2049.026952][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.026952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.026952][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.026952][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.026952][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.026952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.026952][ T72] [ 2049.029016][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2049.029275][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2049.029275][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.029275][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.029275][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.029275][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.029275][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.029275][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.029275][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.029275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.029275][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.029275][ T72] netlink_unicast+0x449/0x710 [ 2049.029275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.029275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.029275][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.029275][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.029275][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.029275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.029275][ T72] [ 2049.031229][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2049.031229][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.031229][ T72] ipv6_find_idev+0x102/0x170 [ 2049.031229][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.031229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.031229][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.031229][ T72] netlink_unicast+0x449/0x710 [ 2049.031229][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.031229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.031229][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.031229][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.031229][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.031229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.031229][ T72] [ 2049.032746][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2049.032746][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.032746][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.032746][ T72] ipv6_find_idev+0x102/0x170 [ 2049.032746][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.032746][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.032746][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.032746][ T72] netlink_unicast+0x449/0x710 [ 2049.032746][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.032746][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.032746][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.032746][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.032746][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.032746][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.032746][ T72] [ 2049.034436][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2049.034698][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2049.034698][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.034698][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.034698][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.034698][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.034698][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.034698][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.034698][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.034698][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.034698][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.034698][ T72] netlink_unicast+0x449/0x710 [ 2049.034698][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.034698][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.034698][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.034698][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.034698][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.034698][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.034698][ T72] [ 2049.036787][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2049.036787][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.036787][ T72] ipv6_find_idev+0x102/0x170 [ 2049.036787][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.036787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.036787][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.036787][ T72] netlink_unicast+0x449/0x710 [ 2049.036787][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.036787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.036787][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.036787][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.036787][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.036787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.036787][ T72] [ 2049.038469][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2049.038469][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.038469][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.038469][ T72] ipv6_find_idev+0x102/0x170 [ 2049.038469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.038469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.038469][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.038469][ T72] netlink_unicast+0x449/0x710 [ 2049.038469][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.038469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.038469][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.038469][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.038469][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.038469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.038469][ T72] [ 2049.040397][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2049.040655][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2049.040655][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.040655][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.040655][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.040655][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.040655][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.040655][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.040655][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.040655][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.040655][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.040655][ T72] netlink_unicast+0x449/0x710 [ 2049.040655][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.040655][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.040655][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.040655][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.040655][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.040655][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.040655][ T72] [ 2049.042853][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2049.042853][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.042853][ T72] ipv6_find_idev+0x102/0x170 [ 2049.042853][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.042853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.042853][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.042853][ T72] netlink_unicast+0x449/0x710 [ 2049.042853][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.042853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.042853][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.042853][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.042853][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.042853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.042853][ T72] [ 2049.044548][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2049.044548][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.044548][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.044548][ T72] ipv6_find_idev+0x102/0x170 [ 2049.044548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.044548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.044548][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.044548][ T72] netlink_unicast+0x449/0x710 [ 2049.044548][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.044548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.044548][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.044548][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.044548][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.044548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.044548][ T72] [ 2049.046479][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2049.046755][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2049.046755][ T72] netdev_get_by_index+0x5e/0x80 [ 2049.046755][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2049.046755][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2049.046755][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2049.046755][ T72] ipv6_add_addr+0x411/0x2000 [ 2049.046755][ T72] inet6_addr_add+0x30e/0xa40 [ 2049.046755][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2049.046755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.046755][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.046755][ T72] netlink_unicast+0x449/0x710 [ 2049.046755][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.046755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.046755][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.046755][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.046755][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.046755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.046755][ T72] [ 2049.048836][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2049.048836][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2049.048836][ T72] ipv6_find_idev+0x102/0x170 [ 2049.048836][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.048836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.048836][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.048836][ T72] netlink_unicast+0x449/0x710 [ 2049.048836][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.048836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.048836][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.048836][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.048836][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.048836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.048836][ T72] [ 2049.050521][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2049.050521][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2049.050521][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2049.050521][ T72] ipv6_find_idev+0x102/0x170 [ 2049.050521][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2049.050521][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2049.050521][ T72] netlink_rcv_skb+0x130/0x360 [ 2049.050521][ T72] netlink_unicast+0x449/0x710 [ 2049.050521][ T72] netlink_sendmsg+0x723/0xbe0 [ 2049.050521][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2049.050521][ T72] ___sys_sendmsg+0xee/0x170 [ 2049.050521][ T72] __sys_sendmsg+0xcd/0x170 [ 2049.050521][ T72] do_syscall_64+0xc6/0x1e0 [ 2049.050521][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2049.050521][ T72] [ 2059.126928][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2059.127402][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2059.127402][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.127402][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.127402][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.127402][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.127402][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.127402][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.127402][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.127402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.127402][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.127402][ T72] netlink_unicast+0x449/0x710 [ 2059.127402][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.127402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.127402][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.127402][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.127402][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.127402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.127402][ T72] [ 2059.129373][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2059.129373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.129373][ T72] ipv6_find_idev+0x102/0x170 [ 2059.129373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.129373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.129373][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.129373][ T72] netlink_unicast+0x449/0x710 [ 2059.129373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.129373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.129373][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.129373][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.129373][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.129373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.129373][ T72] [ 2059.130901][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2059.130901][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.130901][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.130901][ T72] ipv6_find_idev+0x102/0x170 [ 2059.130901][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.130901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.130901][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.130901][ T72] netlink_unicast+0x449/0x710 [ 2059.130901][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.130901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.130901][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.130901][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.130901][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.130901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.130901][ T72] [ 2059.132576][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2059.132863][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2059.132863][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.132863][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.132863][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.132863][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.132863][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.132863][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.132863][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.132863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.132863][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.132863][ T72] netlink_unicast+0x449/0x710 [ 2059.132863][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.132863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.132863][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.132863][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.132863][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.132863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.132863][ T72] [ 2059.134845][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2059.134845][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.134845][ T72] ipv6_find_idev+0x102/0x170 [ 2059.134845][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.134845][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.134845][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.134845][ T72] netlink_unicast+0x449/0x710 [ 2059.134845][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.134845][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.134845][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.134845][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.134845][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.134845][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.134845][ T72] [ 2059.136352][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2059.136352][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.136352][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.136352][ T72] ipv6_find_idev+0x102/0x170 [ 2059.136352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.136352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.136352][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.136352][ T72] netlink_unicast+0x449/0x710 [ 2059.136352][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.136352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.136352][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.136352][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.136352][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.136352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.136352][ T72] [ 2059.137997][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2059.138261][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2059.138261][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.138261][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.138261][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.138261][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.138261][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.138261][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.138261][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.138261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.138261][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.138261][ T72] netlink_unicast+0x449/0x710 [ 2059.138261][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.138261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.138261][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.138261][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.138261][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.138261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.138261][ T72] [ 2059.140285][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2059.140285][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.140285][ T72] ipv6_find_idev+0x102/0x170 [ 2059.140285][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.140285][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.140285][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.140285][ T72] netlink_unicast+0x449/0x710 [ 2059.140285][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.140285][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.140285][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.140285][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.140285][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.140285][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.140285][ T72] [ 2059.141826][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2059.141826][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.141826][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.141826][ T72] ipv6_find_idev+0x102/0x170 [ 2059.141826][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.141826][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.141826][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.141826][ T72] netlink_unicast+0x449/0x710 [ 2059.141826][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.141826][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.141826][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.141826][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.141826][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.141826][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.141826][ T72] [ 2059.143496][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2059.143757][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2059.143757][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.143757][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.143757][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.143757][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.143757][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.143757][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.143757][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.143757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.143757][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.143757][ T72] netlink_unicast+0x449/0x710 [ 2059.143757][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.143757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.143757][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.143757][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.143757][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.143757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.143757][ T72] [ 2059.145728][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2059.145728][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.145728][ T72] ipv6_find_idev+0x102/0x170 [ 2059.145728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.145728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.145728][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.145728][ T72] netlink_unicast+0x449/0x710 [ 2059.145728][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.145728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.145728][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.145728][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.145728][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.145728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.145728][ T72] [ 2059.147278][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2059.147278][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.147278][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.147278][ T72] ipv6_find_idev+0x102/0x170 [ 2059.147278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.147278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.147278][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.147278][ T72] netlink_unicast+0x449/0x710 [ 2059.147278][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.147278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.147278][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.147278][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.147278][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.147278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.147278][ T72] [ 2059.148946][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2059.149209][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2059.149209][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.149209][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.149209][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.149209][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.149209][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.149209][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.149209][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.149209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.149209][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.149209][ T72] netlink_unicast+0x449/0x710 [ 2059.149209][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.149209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.149209][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.149209][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.149209][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.149209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.149209][ T72] [ 2059.151200][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2059.151200][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.151200][ T72] ipv6_find_idev+0x102/0x170 [ 2059.151200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.151200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.151200][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.151200][ T72] netlink_unicast+0x449/0x710 [ 2059.151200][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.151200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.151200][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.151200][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.151200][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.151200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.151200][ T72] [ 2059.152791][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2059.152791][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.152791][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.152791][ T72] ipv6_find_idev+0x102/0x170 [ 2059.152791][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.152791][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.152791][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.152791][ T72] netlink_unicast+0x449/0x710 [ 2059.152791][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.152791][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.152791][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.152791][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.152791][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.152791][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.152791][ T72] [ 2059.154835][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2059.155100][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2059.155100][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.155100][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.155100][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.155100][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.155100][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.155100][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.155100][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.155100][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.155100][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.155100][ T72] netlink_unicast+0x449/0x710 [ 2059.155100][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.155100][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.155100][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.155100][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.155100][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.155100][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.155100][ T72] [ 2059.157274][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2059.157274][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.157274][ T72] ipv6_find_idev+0x102/0x170 [ 2059.157274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.157274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.157274][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.157274][ T72] netlink_unicast+0x449/0x710 [ 2059.157274][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.157274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.157274][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.157274][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.157274][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.157274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.157274][ T72] [ 2059.159094][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2059.159094][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.159094][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.159094][ T72] ipv6_find_idev+0x102/0x170 [ 2059.159094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.159094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.159094][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.159094][ T72] netlink_unicast+0x449/0x710 [ 2059.159094][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.159094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.159094][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.159094][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.159094][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.159094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.159094][ T72] [ 2059.160962][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2059.161221][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2059.161221][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.161221][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.161221][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.161221][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.161221][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.161221][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.161221][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.161221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.161221][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.161221][ T72] netlink_unicast+0x449/0x710 [ 2059.161221][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.161221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.161221][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.161221][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.161221][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.161221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.161221][ T72] [ 2059.163421][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2059.163421][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.163421][ T72] ipv6_find_idev+0x102/0x170 [ 2059.163421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.163421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.163421][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.163421][ T72] netlink_unicast+0x449/0x710 [ 2059.163421][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.163421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.163421][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.163421][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.163421][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.163421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.163421][ T72] [ 2059.165166][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2059.165166][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.165166][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.165166][ T72] ipv6_find_idev+0x102/0x170 [ 2059.165166][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.165166][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.165166][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.165166][ T72] netlink_unicast+0x449/0x710 [ 2059.165166][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.165166][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.165166][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.165166][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.165166][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.165166][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.165166][ T72] [ 2059.167029][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2059.167291][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2059.167291][ T72] netdev_get_by_index+0x5e/0x80 [ 2059.167291][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2059.167291][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2059.167291][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2059.167291][ T72] ipv6_add_addr+0x411/0x2000 [ 2059.167291][ T72] inet6_addr_add+0x30e/0xa40 [ 2059.167291][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2059.167291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.167291][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.167291][ T72] netlink_unicast+0x449/0x710 [ 2059.167291][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.167291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.167291][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.167291][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.167291][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.167291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.167291][ T72] [ 2059.169479][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2059.169479][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2059.169479][ T72] ipv6_find_idev+0x102/0x170 [ 2059.169479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.169479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.169479][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.169479][ T72] netlink_unicast+0x449/0x710 [ 2059.169479][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.169479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.169479][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.169479][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.169479][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.169479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.169479][ T72] [ 2059.171201][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2059.171201][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2059.171201][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2059.171201][ T72] ipv6_find_idev+0x102/0x170 [ 2059.171201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2059.171201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2059.171201][ T72] netlink_rcv_skb+0x130/0x360 [ 2059.171201][ T72] netlink_unicast+0x449/0x710 [ 2059.171201][ T72] netlink_sendmsg+0x723/0xbe0 [ 2059.171201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2059.171201][ T72] ___sys_sendmsg+0xee/0x170 [ 2059.171201][ T72] __sys_sendmsg+0xcd/0x170 [ 2059.171201][ T72] do_syscall_64+0xc6/0x1e0 [ 2059.171201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2059.171201][ T72] [ 2069.590946][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2069.591437][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2069.591437][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.591437][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.591437][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.591437][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.591437][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.591437][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.591437][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.591437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.591437][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.591437][ T72] netlink_unicast+0x449/0x710 [ 2069.591437][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.591437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.591437][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.591437][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.591437][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.591437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.591437][ T72] [ 2069.593434][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2069.593434][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.593434][ T72] ipv6_find_idev+0x102/0x170 [ 2069.593434][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.593434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.593434][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.593434][ T72] netlink_unicast+0x449/0x710 [ 2069.593434][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.593434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.593434][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.593434][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.593434][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.593434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.593434][ T72] [ 2069.594969][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2069.594969][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.594969][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.594969][ T72] ipv6_find_idev+0x102/0x170 [ 2069.594969][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.594969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.594969][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.594969][ T72] netlink_unicast+0x449/0x710 [ 2069.594969][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.594969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.594969][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.594969][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.594969][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.594969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.594969][ T72] [ 2069.596653][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2069.596931][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2069.596931][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.596931][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.596931][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.596931][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.596931][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.596931][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.596931][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.596931][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.596931][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.596931][ T72] netlink_unicast+0x449/0x710 [ 2069.596931][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.596931][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.596931][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.596931][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.596931][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.596931][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.596931][ T72] [ 2069.598901][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2069.598901][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.598901][ T72] ipv6_find_idev+0x102/0x170 [ 2069.598901][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.598901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.598901][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.598901][ T72] netlink_unicast+0x449/0x710 [ 2069.598901][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.598901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.598901][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.598901][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.598901][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.598901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.598901][ T72] [ 2069.600436][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2069.600436][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.600436][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.600436][ T72] ipv6_find_idev+0x102/0x170 [ 2069.600436][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.600436][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.600436][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.600436][ T72] netlink_unicast+0x449/0x710 [ 2069.600436][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.600436][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.600436][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.600436][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.600436][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.600436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.600436][ T72] [ 2069.602110][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2069.602377][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2069.602377][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.602377][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.602377][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.602377][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.602377][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.602377][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.602377][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.602377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.602377][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.602377][ T72] netlink_unicast+0x449/0x710 [ 2069.602377][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.602377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.602377][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.602377][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.602377][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.602377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.602377][ T72] [ 2069.604353][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2069.604353][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.604353][ T72] ipv6_find_idev+0x102/0x170 [ 2069.604353][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.604353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.604353][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.604353][ T72] netlink_unicast+0x449/0x710 [ 2069.604353][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.604353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.604353][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.604353][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.604353][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.604353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.604353][ T72] [ 2069.605859][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2069.605859][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.605859][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.605859][ T72] ipv6_find_idev+0x102/0x170 [ 2069.605859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.605859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.605859][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.605859][ T72] netlink_unicast+0x449/0x710 [ 2069.605859][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.605859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.605859][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.605859][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.605859][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.605859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.605859][ T72] [ 2069.607513][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2069.607783][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2069.607783][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.607783][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.607783][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.607783][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.607783][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.607783][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.607783][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.607783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.607783][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.607783][ T72] netlink_unicast+0x449/0x710 [ 2069.607783][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.607783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.607783][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.607783][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.607783][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.607783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.607783][ T72] [ 2069.609751][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2069.609751][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.609751][ T72] ipv6_find_idev+0x102/0x170 [ 2069.609751][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.609751][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.609751][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.609751][ T72] netlink_unicast+0x449/0x710 [ 2069.609751][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.609751][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.609751][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.609751][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.609751][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.609751][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.609751][ T72] [ 2069.611275][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2069.611275][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.611275][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.611275][ T72] ipv6_find_idev+0x102/0x170 [ 2069.611275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.611275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.611275][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.611275][ T72] netlink_unicast+0x449/0x710 [ 2069.611275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.611275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.611275][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.611275][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.611275][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.611275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.611275][ T72] [ 2069.613342][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2069.613605][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2069.613605][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.613605][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.613605][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.613605][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.613605][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.613605][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.613605][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.613605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.613605][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.613605][ T72] netlink_unicast+0x449/0x710 [ 2069.613605][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.613605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.613605][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.613605][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.613605][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.613605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.613605][ T72] [ 2069.615568][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2069.615568][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.615568][ T72] ipv6_find_idev+0x102/0x170 [ 2069.615568][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.615568][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.615568][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.615568][ T72] netlink_unicast+0x449/0x710 [ 2069.615568][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.615568][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.615568][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.615568][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.615568][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.615568][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.615568][ T72] [ 2069.617100][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2069.617100][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.617100][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.617100][ T72] ipv6_find_idev+0x102/0x170 [ 2069.617100][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.617100][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.617100][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.617100][ T72] netlink_unicast+0x449/0x710 [ 2069.617100][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.617100][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.617100][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.617100][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.617100][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.617100][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.617100][ T72] [ 2069.618807][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2069.619070][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2069.619070][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.619070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.619070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.619070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.619070][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.619070][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.619070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.619070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.619070][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.619070][ T72] netlink_unicast+0x449/0x710 [ 2069.619070][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.619070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.619070][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.619070][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.619070][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.619070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.619070][ T72] [ 2069.621101][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2069.621101][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.621101][ T72] ipv6_find_idev+0x102/0x170 [ 2069.621101][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.621101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.621101][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.621101][ T72] netlink_unicast+0x449/0x710 [ 2069.621101][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.621101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.621101][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.621101][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.621101][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.621101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.621101][ T72] [ 2069.622874][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2069.622874][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.622874][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.622874][ T72] ipv6_find_idev+0x102/0x170 [ 2069.622874][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.622874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.622874][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.622874][ T72] netlink_unicast+0x449/0x710 [ 2069.622874][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.622874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.622874][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.622874][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.622874][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.622874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.622874][ T72] [ 2069.624763][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2069.625022][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2069.625022][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.625022][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.625022][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.625022][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.625022][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.625022][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.625022][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.625022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.625022][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.625022][ T72] netlink_unicast+0x449/0x710 [ 2069.625022][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.625022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.625022][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.625022][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.625022][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.625022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.625022][ T72] [ 2069.627232][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2069.627232][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.627232][ T72] ipv6_find_idev+0x102/0x170 [ 2069.627232][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.627232][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.627232][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.627232][ T72] netlink_unicast+0x449/0x710 [ 2069.627232][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.627232][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.627232][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.627232][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.627232][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.627232][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.627232][ T72] [ 2069.628929][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2069.628929][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.628929][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.628929][ T72] ipv6_find_idev+0x102/0x170 [ 2069.628929][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.628929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.628929][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.628929][ T72] netlink_unicast+0x449/0x710 [ 2069.628929][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.628929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.628929][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.628929][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.628929][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.628929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.628929][ T72] [ 2069.630811][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2069.631076][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2069.631076][ T72] netdev_get_by_index+0x5e/0x80 [ 2069.631076][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2069.631076][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2069.631076][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2069.631076][ T72] ipv6_add_addr+0x411/0x2000 [ 2069.631076][ T72] inet6_addr_add+0x30e/0xa40 [ 2069.631076][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2069.631076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.631076][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.631076][ T72] netlink_unicast+0x449/0x710 [ 2069.631076][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.631076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.631076][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.631076][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.631076][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.631076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.631076][ T72] [ 2069.633359][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2069.633359][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2069.633359][ T72] ipv6_find_idev+0x102/0x170 [ 2069.633359][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.633359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.633359][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.633359][ T72] netlink_unicast+0x449/0x710 [ 2069.633359][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.633359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.633359][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.633359][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.633359][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.633359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.633359][ T72] [ 2069.635058][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2069.635058][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2069.635058][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2069.635058][ T72] ipv6_find_idev+0x102/0x170 [ 2069.635058][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2069.635058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2069.635058][ T72] netlink_rcv_skb+0x130/0x360 [ 2069.635058][ T72] netlink_unicast+0x449/0x710 [ 2069.635058][ T72] netlink_sendmsg+0x723/0xbe0 [ 2069.635058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2069.635058][ T72] ___sys_sendmsg+0xee/0x170 [ 2069.635058][ T72] __sys_sendmsg+0xcd/0x170 [ 2069.635058][ T72] do_syscall_64+0xc6/0x1e0 [ 2069.635058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2069.635058][ T72] [ 2079.886837][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2079.887321][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2079.887321][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.887321][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.887321][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.887321][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.887321][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.887321][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.887321][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.887321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.887321][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.887321][ T72] netlink_unicast+0x449/0x710 [ 2079.887321][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.887321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.887321][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.887321][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.887321][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.887321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.887321][ T72] [ 2079.889307][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2079.889307][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.889307][ T72] ipv6_find_idev+0x102/0x170 [ 2079.889307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.889307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.889307][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.889307][ T72] netlink_unicast+0x449/0x710 [ 2079.889307][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.889307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.889307][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.889307][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.889307][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.889307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.889307][ T72] [ 2079.890827][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2079.890827][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.890827][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.890827][ T72] ipv6_find_idev+0x102/0x170 [ 2079.890827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.890827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.890827][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.890827][ T72] netlink_unicast+0x449/0x710 [ 2079.890827][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.890827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.890827][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.890827][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.890827][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.890827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.890827][ T72] [ 2079.892508][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2079.892807][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2079.892807][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.892807][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.892807][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.892807][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.892807][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.892807][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.892807][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.892807][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.892807][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.892807][ T72] netlink_unicast+0x449/0x710 [ 2079.892807][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.892807][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.892807][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.892807][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.892807][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.892807][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.892807][ T72] [ 2079.894776][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2079.894776][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.894776][ T72] ipv6_find_idev+0x102/0x170 [ 2079.894776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.894776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.894776][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.894776][ T72] netlink_unicast+0x449/0x710 [ 2079.894776][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.894776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.894776][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.894776][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.894776][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.894776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.894776][ T72] [ 2079.896298][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2079.896298][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.896298][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.896298][ T72] ipv6_find_idev+0x102/0x170 [ 2079.896298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.896298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.896298][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.896298][ T72] netlink_unicast+0x449/0x710 [ 2079.896298][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.896298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.896298][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.896298][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.896298][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.896298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.896298][ T72] [ 2079.897965][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2079.898226][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2079.898226][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.898226][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.898226][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.898226][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.898226][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.898226][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.898226][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.898226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.898226][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.898226][ T72] netlink_unicast+0x449/0x710 [ 2079.898226][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.898226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.898226][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.898226][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.898226][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.898226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.898226][ T72] [ 2079.900200][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2079.900200][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.900200][ T72] ipv6_find_idev+0x102/0x170 [ 2079.900200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.900200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.900200][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.900200][ T72] netlink_unicast+0x449/0x710 [ 2079.900200][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.900200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.900200][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.900200][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.900200][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.900200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.900200][ T72] [ 2079.901740][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2079.901740][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.901740][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.901740][ T72] ipv6_find_idev+0x102/0x170 [ 2079.901740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.901740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.901740][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.901740][ T72] netlink_unicast+0x449/0x710 [ 2079.901740][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.901740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.901740][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.901740][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.901740][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.901740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.901740][ T72] [ 2079.903399][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2079.903660][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2079.903660][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.903660][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.903660][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.903660][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.903660][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.903660][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.903660][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.903660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.903660][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.903660][ T72] netlink_unicast+0x449/0x710 [ 2079.903660][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.903660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.903660][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.903660][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.903660][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.903660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.903660][ T72] [ 2079.905639][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2079.905639][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.905639][ T72] ipv6_find_idev+0x102/0x170 [ 2079.905639][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.905639][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.905639][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.905639][ T72] netlink_unicast+0x449/0x710 [ 2079.905639][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.905639][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.905639][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.905639][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.905639][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.905639][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.905639][ T72] [ 2079.907157][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2079.907157][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.907157][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.907157][ T72] ipv6_find_idev+0x102/0x170 [ 2079.907157][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.907157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.907157][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.907157][ T72] netlink_unicast+0x449/0x710 [ 2079.907157][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.907157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.907157][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.907157][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.907157][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.907157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.907157][ T72] [ 2079.909219][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2079.909486][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2079.909486][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.909486][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.909486][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.909486][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.909486][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.909486][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.909486][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.909486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.909486][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.909486][ T72] netlink_unicast+0x449/0x710 [ 2079.909486][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.909486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.909486][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.909486][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.909486][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.909486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.909486][ T72] [ 2079.911461][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2079.911461][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.911461][ T72] ipv6_find_idev+0x102/0x170 [ 2079.911461][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.911461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.911461][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.911461][ T72] netlink_unicast+0x449/0x710 [ 2079.911461][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.911461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.911461][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.911461][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.911461][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.911461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.911461][ T72] [ 2079.912971][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2079.912971][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.912971][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.912971][ T72] ipv6_find_idev+0x102/0x170 [ 2079.912971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.912971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.912971][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.912971][ T72] netlink_unicast+0x449/0x710 [ 2079.912971][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.912971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.912971][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.912971][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.912971][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.912971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.912971][ T72] [ 2079.914671][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2079.915000][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2079.915000][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.915000][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.915000][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.915000][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.915000][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.915000][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.915000][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.915000][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.915000][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.915000][ T72] netlink_unicast+0x449/0x710 [ 2079.915000][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.915000][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.915000][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.915000][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.915000][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.915000][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.915000][ T72] [ 2079.916979][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2079.916979][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.916979][ T72] ipv6_find_idev+0x102/0x170 [ 2079.916979][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.916979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.916979][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.916979][ T72] netlink_unicast+0x449/0x710 [ 2079.916979][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.916979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.916979][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.916979][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.916979][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.916979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.916979][ T72] [ 2079.918677][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2079.918677][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.918677][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.918677][ T72] ipv6_find_idev+0x102/0x170 [ 2079.918677][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.918677][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.918677][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.918677][ T72] netlink_unicast+0x449/0x710 [ 2079.918677][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.918677][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.918677][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.918677][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.918677][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.918677][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.918677][ T72] [ 2079.920681][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2079.921000][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2079.921000][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.921000][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.921000][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.921000][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.921000][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.921000][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.921000][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.921000][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.921000][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.921000][ T72] netlink_unicast+0x449/0x710 [ 2079.921000][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.921000][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.921000][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.921000][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.921000][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.921000][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.921000][ T72] [ 2079.923150][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2079.923150][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.923150][ T72] ipv6_find_idev+0x102/0x170 [ 2079.923150][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.923150][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.923150][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.923150][ T72] netlink_unicast+0x449/0x710 [ 2079.923150][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.923150][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.923150][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.923150][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.923150][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.923150][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.923150][ T72] [ 2079.924789][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2079.924789][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.924789][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.924789][ T72] ipv6_find_idev+0x102/0x170 [ 2079.924789][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.924789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.924789][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.924789][ T72] netlink_unicast+0x449/0x710 [ 2079.924789][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.924789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.924789][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.924789][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.924789][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.924789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.924789][ T72] [ 2079.926721][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2079.927035][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2079.927035][ T72] netdev_get_by_index+0x5e/0x80 [ 2079.927035][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2079.927035][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2079.927035][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2079.927035][ T72] ipv6_add_addr+0x411/0x2000 [ 2079.927035][ T72] inet6_addr_add+0x30e/0xa40 [ 2079.927035][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2079.927035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.927035][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.927035][ T72] netlink_unicast+0x449/0x710 [ 2079.927035][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.927035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.927035][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.927035][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.927035][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.927035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.927035][ T72] [ 2079.929178][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2079.929178][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2079.929178][ T72] ipv6_find_idev+0x102/0x170 [ 2079.929178][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.929178][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.929178][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.929178][ T72] netlink_unicast+0x449/0x710 [ 2079.929178][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.929178][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.929178][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.929178][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.929178][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.929178][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.929178][ T72] [ 2079.930934][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2079.930934][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2079.930934][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2079.930934][ T72] ipv6_find_idev+0x102/0x170 [ 2079.930934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2079.930934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2079.930934][ T72] netlink_rcv_skb+0x130/0x360 [ 2079.930934][ T72] netlink_unicast+0x449/0x710 [ 2079.930934][ T72] netlink_sendmsg+0x723/0xbe0 [ 2079.930934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2079.930934][ T72] ___sys_sendmsg+0xee/0x170 [ 2079.930934][ T72] __sys_sendmsg+0xcd/0x170 [ 2079.930934][ T72] do_syscall_64+0xc6/0x1e0 [ 2079.930934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2079.930934][ T72] [ 2089.934846][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2089.935295][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2089.935295][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.935295][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.935295][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.935295][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.935295][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.935295][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.935295][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.935295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.935295][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.935295][ T72] netlink_unicast+0x449/0x710 [ 2089.935295][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.935295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.935295][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.935295][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.935295][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.935295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.935295][ T72] [ 2089.937320][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2089.937320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.937320][ T72] ipv6_find_idev+0x102/0x170 [ 2089.937320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.937320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.937320][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.937320][ T72] netlink_unicast+0x449/0x710 [ 2089.937320][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.937320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.937320][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.937320][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.937320][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.937320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.937320][ T72] [ 2089.938865][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2089.938865][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.938865][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.938865][ T72] ipv6_find_idev+0x102/0x170 [ 2089.938865][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.938865][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.938865][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.938865][ T72] netlink_unicast+0x449/0x710 [ 2089.938865][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.938865][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.938865][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.938865][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.938865][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.938865][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.938865][ T72] [ 2089.940583][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2089.940882][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2089.940882][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.940882][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.940882][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.940882][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.940882][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.940882][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.940882][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.940882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.940882][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.940882][ T72] netlink_unicast+0x449/0x710 [ 2089.940882][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.940882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.940882][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.940882][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.940882][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.940882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.940882][ T72] [ 2089.942888][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2089.942888][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.942888][ T72] ipv6_find_idev+0x102/0x170 [ 2089.942888][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.942888][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.942888][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.942888][ T72] netlink_unicast+0x449/0x710 [ 2089.942888][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.942888][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.942888][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.942888][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.942888][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.942888][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.942888][ T72] [ 2089.944436][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2089.944436][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.944436][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.944436][ T72] ipv6_find_idev+0x102/0x170 [ 2089.944436][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.944436][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.944436][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.944436][ T72] netlink_unicast+0x449/0x710 [ 2089.944436][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.944436][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.944436][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.944436][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.944436][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.944436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.944436][ T72] [ 2089.946130][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2089.946405][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2089.946405][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.946405][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.946405][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.946405][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.946405][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.946405][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.946405][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.946405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.946405][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.946405][ T72] netlink_unicast+0x449/0x710 [ 2089.946405][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.946405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.946405][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.946405][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.946405][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.946405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.946405][ T72] [ 2089.948409][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2089.948409][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.948409][ T72] ipv6_find_idev+0x102/0x170 [ 2089.948409][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.948409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.948409][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.948409][ T72] netlink_unicast+0x449/0x710 [ 2089.948409][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.948409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.948409][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.948409][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.948409][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.948409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.948409][ T72] [ 2089.949952][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2089.949952][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.949952][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.949952][ T72] ipv6_find_idev+0x102/0x170 [ 2089.949952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.949952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.949952][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.949952][ T72] netlink_unicast+0x449/0x710 [ 2089.949952][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.949952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.949952][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.949952][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.949952][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.949952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.949952][ T72] [ 2089.951669][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2089.952386][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2089.952386][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.952386][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.952386][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.952386][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.952386][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.952386][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.952386][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.952386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.952386][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.952386][ T72] netlink_unicast+0x449/0x710 [ 2089.952386][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.952386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.952386][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.952386][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.952386][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.952386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.952386][ T72] [ 2089.954760][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2089.954760][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.954760][ T72] ipv6_find_idev+0x102/0x170 [ 2089.954760][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.954760][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.954760][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.954760][ T72] netlink_unicast+0x449/0x710 [ 2089.954760][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.954760][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.954760][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.954760][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.954760][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.954760][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.954760][ T72] [ 2089.956854][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2089.956854][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.956854][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.956854][ T72] ipv6_find_idev+0x102/0x170 [ 2089.956854][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.956854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.956854][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.956854][ T72] netlink_unicast+0x449/0x710 [ 2089.956854][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.956854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.956854][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.956854][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.956854][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.956854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.956854][ T72] [ 2089.958593][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2089.958908][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2089.958908][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.958908][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.958908][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.958908][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.958908][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.958908][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.958908][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.958908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.958908][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.958908][ T72] netlink_unicast+0x449/0x710 [ 2089.958908][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.958908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.958908][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.958908][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.958908][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.958908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.958908][ T72] [ 2089.960910][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2089.960910][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.960910][ T72] ipv6_find_idev+0x102/0x170 [ 2089.960910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.960910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.960910][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.960910][ T72] netlink_unicast+0x449/0x710 [ 2089.960910][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.960910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.960910][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.960910][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.960910][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.960910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.960910][ T72] [ 2089.962491][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2089.962491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.962491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.962491][ T72] ipv6_find_idev+0x102/0x170 [ 2089.962491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.962491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.962491][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.962491][ T72] netlink_unicast+0x449/0x710 [ 2089.962491][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.962491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.962491][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.962491][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.962491][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.962491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.962491][ T72] [ 2089.964226][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2089.964543][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2089.964543][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.964543][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.964543][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.964543][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.964543][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.964543][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.964543][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.964543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.964543][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.964543][ T72] netlink_unicast+0x449/0x710 [ 2089.964543][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.964543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.964543][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.964543][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.964543][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.964543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.964543][ T72] [ 2089.966598][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2089.966598][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.966598][ T72] ipv6_find_idev+0x102/0x170 [ 2089.966598][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.966598][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.966598][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.966598][ T72] netlink_unicast+0x449/0x710 [ 2089.966598][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.966598][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.966598][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.966598][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.966598][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.966598][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.966598][ T72] [ 2089.968257][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2089.968257][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.968257][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.968257][ T72] ipv6_find_idev+0x102/0x170 [ 2089.968257][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.968257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.968257][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.968257][ T72] netlink_unicast+0x449/0x710 [ 2089.968257][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.968257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.968257][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.968257][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.968257][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.968257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.968257][ T72] [ 2089.970302][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2089.970617][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2089.970617][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.970617][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.970617][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.970617][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.970617][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.970617][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.970617][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.970617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.970617][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.970617][ T72] netlink_unicast+0x449/0x710 [ 2089.970617][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.970617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.970617][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.970617][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.970617][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.970617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.970617][ T72] [ 2089.972806][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2089.972806][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.972806][ T72] ipv6_find_idev+0x102/0x170 [ 2089.972806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.972806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.972806][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.972806][ T72] netlink_unicast+0x449/0x710 [ 2089.972806][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.972806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.972806][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.972806][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.972806][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.972806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.972806][ T72] [ 2089.974534][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2089.974534][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.974534][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.974534][ T72] ipv6_find_idev+0x102/0x170 [ 2089.974534][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.974534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.974534][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.974534][ T72] netlink_unicast+0x449/0x710 [ 2089.974534][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.974534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.974534][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.974534][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.974534][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.974534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.974534][ T72] [ 2089.976449][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2089.976769][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2089.976769][ T72] netdev_get_by_index+0x5e/0x80 [ 2089.976769][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2089.976769][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2089.976769][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2089.976769][ T72] ipv6_add_addr+0x411/0x2000 [ 2089.976769][ T72] inet6_addr_add+0x30e/0xa40 [ 2089.976769][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2089.976769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.976769][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.976769][ T72] netlink_unicast+0x449/0x710 [ 2089.976769][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.976769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.976769][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.976769][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.976769][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.976769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.976769][ T72] [ 2089.978946][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2089.978946][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2089.978946][ T72] ipv6_find_idev+0x102/0x170 [ 2089.978946][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.978946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.978946][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.978946][ T72] netlink_unicast+0x449/0x710 [ 2089.978946][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.978946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.978946][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.978946][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.978946][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.978946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.978946][ T72] [ 2089.980747][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2089.980747][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2089.980747][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2089.980747][ T72] ipv6_find_idev+0x102/0x170 [ 2089.980747][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2089.980747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2089.980747][ T72] netlink_rcv_skb+0x130/0x360 [ 2089.980747][ T72] netlink_unicast+0x449/0x710 [ 2089.980747][ T72] netlink_sendmsg+0x723/0xbe0 [ 2089.980747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2089.980747][ T72] ___sys_sendmsg+0xee/0x170 [ 2089.980747][ T72] __sys_sendmsg+0xcd/0x170 [ 2089.980747][ T72] do_syscall_64+0xc6/0x1e0 [ 2089.980747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2089.980747][ T72] [ 2100.222876][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2100.223323][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2100.223323][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.223323][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.223323][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.223323][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.223323][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.223323][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.223323][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.223323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.223323][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.223323][ T72] netlink_unicast+0x449/0x710 [ 2100.223323][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.223323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.223323][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.223323][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.223323][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.223323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.223323][ T72] [ 2100.225330][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2100.225330][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.225330][ T72] ipv6_find_idev+0x102/0x170 [ 2100.225330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.225330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.225330][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.225330][ T72] netlink_unicast+0x449/0x710 [ 2100.225330][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.225330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.225330][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.225330][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.225330][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.225330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.225330][ T72] [ 2100.226871][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2100.226871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.226871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.226871][ T72] ipv6_find_idev+0x102/0x170 [ 2100.226871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.226871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.226871][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.226871][ T72] netlink_unicast+0x449/0x710 [ 2100.226871][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.226871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.226871][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.226871][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.226871][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.226871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.226871][ T72] [ 2100.228580][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2100.228872][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2100.228872][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.228872][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.228872][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.228872][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.228872][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.228872][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.228872][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.228872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.228872][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.228872][ T72] netlink_unicast+0x449/0x710 [ 2100.228872][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.228872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.228872][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.228872][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.228872][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.228872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.228872][ T72] [ 2100.230861][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2100.230861][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.230861][ T72] ipv6_find_idev+0x102/0x170 [ 2100.230861][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.230861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.230861][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.230861][ T72] netlink_unicast+0x449/0x710 [ 2100.230861][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.230861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.230861][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.230861][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.230861][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.230861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.230861][ T72] [ 2100.232414][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2100.232414][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.232414][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.232414][ T72] ipv6_find_idev+0x102/0x170 [ 2100.232414][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.232414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.232414][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.232414][ T72] netlink_unicast+0x449/0x710 [ 2100.232414][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.232414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.232414][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.232414][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.232414][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.232414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.232414][ T72] [ 2100.234093][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2100.234359][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2100.234359][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.234359][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.234359][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.234359][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.234359][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.234359][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.234359][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.234359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.234359][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.234359][ T72] netlink_unicast+0x449/0x710 [ 2100.234359][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.234359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.234359][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.234359][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.234359][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.234359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.234359][ T72] [ 2100.236348][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2100.236348][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.236348][ T72] ipv6_find_idev+0x102/0x170 [ 2100.236348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.236348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.236348][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.236348][ T72] netlink_unicast+0x449/0x710 [ 2100.236348][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.236348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.236348][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.236348][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.236348][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.236348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.236348][ T72] [ 2100.237879][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2100.237879][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.237879][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.237879][ T72] ipv6_find_idev+0x102/0x170 [ 2100.237879][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.237879][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.237879][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.237879][ T72] netlink_unicast+0x449/0x710 [ 2100.237879][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.237879][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.237879][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.237879][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.237879][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.237879][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.237879][ T72] [ 2100.239575][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2100.240272][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2100.240272][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.240272][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.240272][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.240272][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.240272][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.240272][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.240272][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.240272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.240272][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.240272][ T72] netlink_unicast+0x449/0x710 [ 2100.240272][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.240272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.240272][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.240272][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.240272][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.240272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.240272][ T72] [ 2100.242265][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2100.242265][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.242265][ T72] ipv6_find_idev+0x102/0x170 [ 2100.242265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.242265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.242265][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.242265][ T72] netlink_unicast+0x449/0x710 [ 2100.242265][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.242265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.242265][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.242265][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.242265][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.242265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.242265][ T72] [ 2100.243790][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2100.243790][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.243790][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.243790][ T72] ipv6_find_idev+0x102/0x170 [ 2100.243790][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.243790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.243790][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.243790][ T72] netlink_unicast+0x449/0x710 [ 2100.243790][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.243790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.243790][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.243790][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.243790][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.243790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.243790][ T72] [ 2100.245528][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2100.245842][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2100.245842][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.245842][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.245842][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.245842][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.245842][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.245842][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.245842][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.245842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.245842][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.245842][ T72] netlink_unicast+0x449/0x710 [ 2100.245842][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.245842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.245842][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.245842][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.245842][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.245842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.245842][ T72] [ 2100.247869][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2100.247869][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.247869][ T72] ipv6_find_idev+0x102/0x170 [ 2100.247869][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.247869][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.247869][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.247869][ T72] netlink_unicast+0x449/0x710 [ 2100.247869][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.247869][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.247869][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.247869][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.247869][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.247869][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.247869][ T72] [ 2100.249397][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2100.249397][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.249397][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.249397][ T72] ipv6_find_idev+0x102/0x170 [ 2100.249397][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.249397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.249397][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.249397][ T72] netlink_unicast+0x449/0x710 [ 2100.249397][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.249397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.249397][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.249397][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.249397][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.249397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.249397][ T72] [ 2100.251114][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2100.251426][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2100.251426][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.251426][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.251426][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.251426][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.251426][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.251426][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.251426][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.251426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.251426][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.251426][ T72] netlink_unicast+0x449/0x710 [ 2100.251426][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.251426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.251426][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.251426][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.251426][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.251426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.251426][ T72] [ 2100.253475][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2100.253475][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.253475][ T72] ipv6_find_idev+0x102/0x170 [ 2100.253475][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.253475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.253475][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.253475][ T72] netlink_unicast+0x449/0x710 [ 2100.253475][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.253475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.253475][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.253475][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.253475][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.253475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.253475][ T72] [ 2100.255121][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2100.255121][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.255121][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.255121][ T72] ipv6_find_idev+0x102/0x170 [ 2100.255121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.255121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.255121][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.255121][ T72] netlink_unicast+0x449/0x710 [ 2100.255121][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.255121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.255121][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.255121][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.255121][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.255121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.255121][ T72] [ 2100.257132][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2100.257436][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2100.257436][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.257436][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.257436][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.257436][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.257436][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.257436][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.257436][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.257436][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.257436][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.257436][ T72] netlink_unicast+0x449/0x710 [ 2100.257436][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.257436][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.257436][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.257436][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.257436][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.257436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.257436][ T72] [ 2100.259594][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2100.259594][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.259594][ T72] ipv6_find_idev+0x102/0x170 [ 2100.259594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.259594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.259594][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.259594][ T72] netlink_unicast+0x449/0x710 [ 2100.259594][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.259594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.259594][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.259594][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.259594][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.259594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.259594][ T72] [ 2100.261308][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2100.261308][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.261308][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.261308][ T72] ipv6_find_idev+0x102/0x170 [ 2100.261308][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.261308][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.261308][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.261308][ T72] netlink_unicast+0x449/0x710 [ 2100.261308][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.261308][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.261308][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.261308][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.261308][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.261308][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.261308][ T72] [ 2100.263199][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2100.263513][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2100.263513][ T72] netdev_get_by_index+0x5e/0x80 [ 2100.263513][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2100.263513][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2100.263513][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2100.263513][ T72] ipv6_add_addr+0x411/0x2000 [ 2100.263513][ T72] inet6_addr_add+0x30e/0xa40 [ 2100.263513][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2100.263513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.263513][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.263513][ T72] netlink_unicast+0x449/0x710 [ 2100.263513][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.263513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.263513][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.263513][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.263513][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.263513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.263513][ T72] [ 2100.265668][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2100.265668][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2100.265668][ T72] ipv6_find_idev+0x102/0x170 [ 2100.265668][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.265668][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.265668][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.265668][ T72] netlink_unicast+0x449/0x710 [ 2100.265668][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.265668][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.265668][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.265668][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.265668][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.265668][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.265668][ T72] [ 2100.267378][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2100.267378][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2100.267378][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2100.267378][ T72] ipv6_find_idev+0x102/0x170 [ 2100.267378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2100.267378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2100.267378][ T72] netlink_rcv_skb+0x130/0x360 [ 2100.267378][ T72] netlink_unicast+0x449/0x710 [ 2100.267378][ T72] netlink_sendmsg+0x723/0xbe0 [ 2100.267378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2100.267378][ T72] ___sys_sendmsg+0xee/0x170 [ 2100.267378][ T72] __sys_sendmsg+0xcd/0x170 [ 2100.267378][ T72] do_syscall_64+0xc6/0x1e0 [ 2100.267378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2100.267378][ T72] [ 2110.510925][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2110.511374][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2110.511374][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.511374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.511374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.511374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.511374][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.511374][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.511374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.511374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.511374][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.511374][ T72] netlink_unicast+0x449/0x710 [ 2110.511374][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.511374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.511374][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.511374][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.511374][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.511374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.511374][ T72] [ 2110.513438][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2110.513438][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.513438][ T72] ipv6_find_idev+0x102/0x170 [ 2110.513438][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.513438][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.513438][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.513438][ T72] netlink_unicast+0x449/0x710 [ 2110.513438][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.513438][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.513438][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.513438][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.513438][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.513438][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.513438][ T72] [ 2110.514979][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2110.514979][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.514979][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.514979][ T72] ipv6_find_idev+0x102/0x170 [ 2110.514979][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.514979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.514979][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.514979][ T72] netlink_unicast+0x449/0x710 [ 2110.514979][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.514979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.514979][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.514979][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.514979][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.514979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.514979][ T72] [ 2110.516691][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2110.516995][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2110.516995][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.516995][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.516995][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.516995][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.516995][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.516995][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.516995][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.516995][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.516995][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.516995][ T72] netlink_unicast+0x449/0x710 [ 2110.516995][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.516995][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.516995][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.516995][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.516995][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.516995][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.516995][ T72] [ 2110.518992][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2110.518992][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.518992][ T72] ipv6_find_idev+0x102/0x170 [ 2110.518992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.518992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.518992][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.518992][ T72] netlink_unicast+0x449/0x710 [ 2110.518992][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.518992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.518992][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.518992][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.518992][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.518992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.518992][ T72] [ 2110.521064][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2110.521064][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.521064][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.521064][ T72] ipv6_find_idev+0x102/0x170 [ 2110.521064][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.521064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.521064][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.521064][ T72] netlink_unicast+0x449/0x710 [ 2110.521064][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.521064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.521064][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.521064][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.521064][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.521064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.521064][ T72] [ 2110.522763][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2110.523046][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2110.523046][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.523046][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.523046][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.523046][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.523046][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.523046][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.523046][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.523046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.523046][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.523046][ T72] netlink_unicast+0x449/0x710 [ 2110.523046][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.523046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.523046][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.523046][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.523046][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.523046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.523046][ T72] [ 2110.525056][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2110.525056][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.525056][ T72] ipv6_find_idev+0x102/0x170 [ 2110.525056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.525056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.525056][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.525056][ T72] netlink_unicast+0x449/0x710 [ 2110.525056][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.525056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.525056][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.525056][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.525056][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.525056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.525056][ T72] [ 2110.526591][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2110.526591][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.526591][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.526591][ T72] ipv6_find_idev+0x102/0x170 [ 2110.526591][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.526591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.526591][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.526591][ T72] netlink_unicast+0x449/0x710 [ 2110.526591][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.526591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.526591][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.526591][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.526591][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.526591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.526591][ T72] [ 2110.528287][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2110.528549][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2110.528549][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.528549][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.528549][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.528549][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.528549][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.528549][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.528549][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.528549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.528549][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.528549][ T72] netlink_unicast+0x449/0x710 [ 2110.528549][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.528549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.528549][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.528549][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.528549][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.528549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.528549][ T72] [ 2110.530540][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2110.530540][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.530540][ T72] ipv6_find_idev+0x102/0x170 [ 2110.530540][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.530540][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.530540][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.530540][ T72] netlink_unicast+0x449/0x710 [ 2110.530540][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.530540][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.530540][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.530540][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.530540][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.530540][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.530540][ T72] [ 2110.532104][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2110.532104][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.532104][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.532104][ T72] ipv6_find_idev+0x102/0x170 [ 2110.532104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.532104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.532104][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.532104][ T72] netlink_unicast+0x449/0x710 [ 2110.532104][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.532104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.532104][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.532104][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.532104][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.532104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.532104][ T72] [ 2110.534192][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2110.534797][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2110.534797][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.534797][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.534797][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.534797][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.534797][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.534797][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.534797][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.534797][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.534797][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.534797][ T72] netlink_unicast+0x449/0x710 [ 2110.534797][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.534797][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.534797][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.534797][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.534797][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.534797][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.534797][ T72] [ 2110.536800][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2110.536800][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.536800][ T72] ipv6_find_idev+0x102/0x170 [ 2110.536800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.536800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.536800][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.536800][ T72] netlink_unicast+0x449/0x710 [ 2110.536800][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.536800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.536800][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.536800][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.536800][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.536800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.536800][ T72] [ 2110.538716][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2110.538716][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.538716][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.538716][ T72] ipv6_find_idev+0x102/0x170 [ 2110.538716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.538716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.538716][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.538716][ T72] netlink_unicast+0x449/0x710 [ 2110.538716][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.538716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.538716][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.538716][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.538716][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.538716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.538716][ T72] [ 2110.540420][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2110.540699][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2110.540699][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.540699][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.540699][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.540699][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.540699][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.540699][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.540699][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.540699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.540699][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.540699][ T72] netlink_unicast+0x449/0x710 [ 2110.540699][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.540699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.540699][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.540699][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.540699][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.540699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.540699][ T72] [ 2110.542707][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2110.542707][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.542707][ T72] ipv6_find_idev+0x102/0x170 [ 2110.542707][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.542707][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.542707][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.542707][ T72] netlink_unicast+0x449/0x710 [ 2110.542707][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.542707][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.542707][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.542707][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.542707][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.542707][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.542707][ T72] [ 2110.544300][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2110.544300][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.544300][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.544300][ T72] ipv6_find_idev+0x102/0x170 [ 2110.544300][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.544300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.544300][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.544300][ T72] netlink_unicast+0x449/0x710 [ 2110.544300][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.544300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.544300][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.544300][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.544300][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.544300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.544300][ T72] [ 2110.546254][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2110.546562][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2110.546562][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.546562][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.546562][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.546562][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.546562][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.546562][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.546562][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.546562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.546562][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.546562][ T72] netlink_unicast+0x449/0x710 [ 2110.546562][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.546562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.546562][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.546562][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.546562][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.546562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.546562][ T72] [ 2110.548731][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2110.548731][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.548731][ T72] ipv6_find_idev+0x102/0x170 [ 2110.548731][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.548731][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.548731][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.548731][ T72] netlink_unicast+0x449/0x710 [ 2110.548731][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.548731][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.548731][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.548731][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.548731][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.548731][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.548731][ T72] [ 2110.550547][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2110.550547][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.550547][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.550547][ T72] ipv6_find_idev+0x102/0x170 [ 2110.550547][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.550547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.550547][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.550547][ T72] netlink_unicast+0x449/0x710 [ 2110.550547][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.550547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.550547][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.550547][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.550547][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.550547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.550547][ T72] [ 2110.552468][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2110.552782][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2110.552782][ T72] netdev_get_by_index+0x5e/0x80 [ 2110.552782][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2110.552782][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2110.552782][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2110.552782][ T72] ipv6_add_addr+0x411/0x2000 [ 2110.552782][ T72] inet6_addr_add+0x30e/0xa40 [ 2110.552782][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2110.552782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.552782][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.552782][ T72] netlink_unicast+0x449/0x710 [ 2110.552782][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.552782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.552782][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.552782][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.552782][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.552782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.552782][ T72] [ 2110.554952][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2110.554952][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2110.554952][ T72] ipv6_find_idev+0x102/0x170 [ 2110.554952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.554952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.554952][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.554952][ T72] netlink_unicast+0x449/0x710 [ 2110.554952][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.554952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.554952][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.554952][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.554952][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.554952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.554952][ T72] [ 2110.556686][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2110.556686][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2110.556686][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2110.556686][ T72] ipv6_find_idev+0x102/0x170 [ 2110.556686][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2110.556686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2110.556686][ T72] netlink_rcv_skb+0x130/0x360 [ 2110.556686][ T72] netlink_unicast+0x449/0x710 [ 2110.556686][ T72] netlink_sendmsg+0x723/0xbe0 [ 2110.556686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2110.556686][ T72] ___sys_sendmsg+0xee/0x170 [ 2110.556686][ T72] __sys_sendmsg+0xcd/0x170 [ 2110.556686][ T72] do_syscall_64+0xc6/0x1e0 [ 2110.556686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2110.556686][ T72] [ 2120.798840][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2120.799368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2120.799368][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.799368][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.799368][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.799368][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.799368][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.799368][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.799368][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.799368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.799368][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.799368][ T72] netlink_unicast+0x449/0x710 [ 2120.799368][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.799368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.799368][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.799368][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.799368][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.799368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.799368][ T72] [ 2120.801572][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2120.801572][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.801572][ T72] ipv6_find_idev+0x102/0x170 [ 2120.801572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.801572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.801572][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.801572][ T72] netlink_unicast+0x449/0x710 [ 2120.801572][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.801572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.801572][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.801572][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.801572][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.801572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.801572][ T72] [ 2120.803172][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2120.803172][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.803172][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.803172][ T72] ipv6_find_idev+0x102/0x170 [ 2120.803172][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.803172][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.803172][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.803172][ T72] netlink_unicast+0x449/0x710 [ 2120.803172][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.803172][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.803172][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.803172][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.803172][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.803172][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.803172][ T72] [ 2120.805388][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2120.805725][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2120.805725][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.805725][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.805725][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.805725][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.805725][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.805725][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.805725][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.805725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.805725][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.805725][ T72] netlink_unicast+0x449/0x710 [ 2120.805725][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.805725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.805725][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.805725][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.805725][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.805725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.805725][ T72] [ 2120.807778][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2120.807778][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.807778][ T72] ipv6_find_idev+0x102/0x170 [ 2120.807778][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.807778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.807778][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.807778][ T72] netlink_unicast+0x449/0x710 [ 2120.807778][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.807778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.807778][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.807778][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.807778][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.807778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.807778][ T72] [ 2120.809418][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2120.809418][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.809418][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.809418][ T72] ipv6_find_idev+0x102/0x170 [ 2120.809418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.809418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.809418][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.809418][ T72] netlink_unicast+0x449/0x710 [ 2120.809418][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.809418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.809418][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.809418][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.809418][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.809418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.809418][ T72] [ 2120.811241][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2120.811519][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2120.811519][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.811519][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.811519][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.811519][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.811519][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.811519][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.811519][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.811519][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.811519][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.811519][ T72] netlink_unicast+0x449/0x710 [ 2120.811519][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.811519][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.811519][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.811519][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.811519][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.811519][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.811519][ T72] [ 2120.813623][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2120.813623][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.813623][ T72] ipv6_find_idev+0x102/0x170 [ 2120.813623][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.813623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.813623][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.813623][ T72] netlink_unicast+0x449/0x710 [ 2120.813623][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.813623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.813623][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.813623][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.813623][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.813623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.813623][ T72] [ 2120.815242][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2120.815242][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.815242][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.815242][ T72] ipv6_find_idev+0x102/0x170 [ 2120.815242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.815242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.815242][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.815242][ T72] netlink_unicast+0x449/0x710 [ 2120.815242][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.815242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.815242][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.815242][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.815242][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.815242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.815242][ T72] [ 2120.816989][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2120.817268][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2120.817268][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.817268][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.817268][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.817268][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.817268][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.817268][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.817268][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.817268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.817268][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.817268][ T72] netlink_unicast+0x449/0x710 [ 2120.817268][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.817268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.817268][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.817268][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.817268][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.817268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.817268][ T72] [ 2120.819302][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2120.819302][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.819302][ T72] ipv6_find_idev+0x102/0x170 [ 2120.819302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.819302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.819302][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.819302][ T72] netlink_unicast+0x449/0x710 [ 2120.819302][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.819302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.819302][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.819302][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.819302][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.819302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.819302][ T72] [ 2120.820859][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2120.820859][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.820859][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.820859][ T72] ipv6_find_idev+0x102/0x170 [ 2120.820859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.820859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.820859][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.820859][ T72] netlink_unicast+0x449/0x710 [ 2120.820859][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.820859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.820859][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.820859][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.820859][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.820859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.820859][ T72] [ 2120.823014][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2120.823623][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2120.823623][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.823623][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.823623][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.823623][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.823623][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.823623][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.823623][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.823623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.823623][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.823623][ T72] netlink_unicast+0x449/0x710 [ 2120.823623][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.823623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.823623][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.823623][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.823623][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.823623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.823623][ T72] [ 2120.825673][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2120.825673][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.825673][ T72] ipv6_find_idev+0x102/0x170 [ 2120.825673][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.825673][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.825673][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.825673][ T72] netlink_unicast+0x449/0x710 [ 2120.825673][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.825673][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.825673][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.825673][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.825673][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.825673][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.825673][ T72] [ 2120.827229][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2120.827229][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.827229][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.827229][ T72] ipv6_find_idev+0x102/0x170 [ 2120.827229][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.827229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.827229][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.827229][ T72] netlink_unicast+0x449/0x710 [ 2120.827229][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.827229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.827229][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.827229][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.827229][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.827229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.827229][ T72] [ 2120.828949][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2120.829220][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2120.829220][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.829220][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.829220][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.829220][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.829220][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.829220][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.829220][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.829220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.829220][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.829220][ T72] netlink_unicast+0x449/0x710 [ 2120.829220][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.829220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.829220][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.829220][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.829220][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.829220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.829220][ T72] [ 2120.831262][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2120.831262][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.831262][ T72] ipv6_find_idev+0x102/0x170 [ 2120.831262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.831262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.831262][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.831262][ T72] netlink_unicast+0x449/0x710 [ 2120.831262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.831262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.831262][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.831262][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.831262][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.831262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.831262][ T72] [ 2120.832899][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2120.832899][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.832899][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.832899][ T72] ipv6_find_idev+0x102/0x170 [ 2120.832899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.832899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.832899][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.832899][ T72] netlink_unicast+0x449/0x710 [ 2120.832899][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.832899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.832899][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.832899][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.832899][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.832899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.832899][ T72] [ 2120.834947][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2120.835257][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2120.835257][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.835257][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.835257][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.835257][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.835257][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.835257][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.835257][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.835257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.835257][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.835257][ T72] netlink_unicast+0x449/0x710 [ 2120.835257][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.835257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.835257][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.835257][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.835257][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.835257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.835257][ T72] [ 2120.837443][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2120.837443][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.837443][ T72] ipv6_find_idev+0x102/0x170 [ 2120.837443][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.837443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.837443][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.837443][ T72] netlink_unicast+0x449/0x710 [ 2120.837443][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.837443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.837443][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.837443][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.837443][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.837443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.837443][ T72] [ 2120.839201][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2120.839201][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.839201][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.839201][ T72] ipv6_find_idev+0x102/0x170 [ 2120.839201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.839201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.839201][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.839201][ T72] netlink_unicast+0x449/0x710 [ 2120.839201][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.839201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.839201][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.839201][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.839201][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.839201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.839201][ T72] [ 2120.841236][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2120.841572][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2120.841572][ T72] netdev_get_by_index+0x5e/0x80 [ 2120.841572][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2120.841572][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2120.841572][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2120.841572][ T72] ipv6_add_addr+0x411/0x2000 [ 2120.841572][ T72] inet6_addr_add+0x30e/0xa40 [ 2120.841572][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2120.841572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.841572][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.841572][ T72] netlink_unicast+0x449/0x710 [ 2120.841572][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.841572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.841572][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.841572][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.841572][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.841572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.841572][ T72] [ 2120.843842][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2120.843842][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2120.843842][ T72] ipv6_find_idev+0x102/0x170 [ 2120.843842][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.843842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.843842][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.843842][ T72] netlink_unicast+0x449/0x710 [ 2120.843842][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.843842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.843842][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.843842][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.843842][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.843842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.843842][ T72] [ 2120.845659][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2120.845659][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2120.845659][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2120.845659][ T72] ipv6_find_idev+0x102/0x170 [ 2120.845659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2120.845659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2120.845659][ T72] netlink_rcv_skb+0x130/0x360 [ 2120.845659][ T72] netlink_unicast+0x449/0x710 [ 2120.845659][ T72] netlink_sendmsg+0x723/0xbe0 [ 2120.845659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2120.845659][ T72] ___sys_sendmsg+0xee/0x170 [ 2120.845659][ T72] __sys_sendmsg+0xcd/0x170 [ 2120.845659][ T72] do_syscall_64+0xc6/0x1e0 [ 2120.845659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2120.845659][ T72] [ 2131.086874][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2131.087527][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2131.087527][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.087527][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.087527][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.087527][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.087527][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.087527][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.087527][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.087527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.087527][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.087527][ T72] netlink_unicast+0x449/0x710 [ 2131.087527][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.087527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.087527][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.087527][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.087527][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.087527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.087527][ T72] [ 2131.090654][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2131.090654][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.090654][ T72] ipv6_find_idev+0x102/0x170 [ 2131.090654][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.090654][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.090654][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.090654][ T72] netlink_unicast+0x449/0x710 [ 2131.090654][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.090654][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.090654][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.090654][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.090654][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.090654][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.090654][ T72] [ 2131.093055][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2131.093055][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.093055][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.093055][ T72] ipv6_find_idev+0x102/0x170 [ 2131.093055][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.093055][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.093055][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.093055][ T72] netlink_unicast+0x449/0x710 [ 2131.093055][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.093055][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.093055][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.093055][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.093055][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.093055][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.093055][ T72] [ 2131.095784][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2131.096228][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2131.096228][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.096228][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.096228][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.096228][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.096228][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.096228][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.096228][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.096228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.096228][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.096228][ T72] netlink_unicast+0x449/0x710 [ 2131.096228][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.096228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.096228][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.096228][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.096228][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.096228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.096228][ T72] [ 2131.099374][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2131.099374][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.099374][ T72] ipv6_find_idev+0x102/0x170 [ 2131.099374][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.099374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.099374][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.099374][ T72] netlink_unicast+0x449/0x710 [ 2131.099374][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.099374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.099374][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.099374][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.099374][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.099374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.099374][ T72] [ 2131.101826][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2131.101826][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.101826][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.101826][ T72] ipv6_find_idev+0x102/0x170 [ 2131.101826][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.101826][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.101826][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.101826][ T72] netlink_unicast+0x449/0x710 [ 2131.101826][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.101826][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.101826][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.101826][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.101826][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.101826][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.101826][ T72] [ 2131.104517][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2131.104944][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2131.104944][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.104944][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.104944][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.104944][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.104944][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.104944][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.104944][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.104944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.104944][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.104944][ T72] netlink_unicast+0x449/0x710 [ 2131.104944][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.104944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.104944][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.104944][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.104944][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.104944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.104944][ T72] [ 2131.108020][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2131.108020][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.108020][ T72] ipv6_find_idev+0x102/0x170 [ 2131.108020][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.108020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.108020][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.108020][ T72] netlink_unicast+0x449/0x710 [ 2131.108020][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.108020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.108020][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.108020][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.108020][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.108020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.108020][ T72] [ 2131.110295][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2131.110295][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.110295][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.110295][ T72] ipv6_find_idev+0x102/0x170 [ 2131.110295][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.110295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.110295][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.110295][ T72] netlink_unicast+0x449/0x710 [ 2131.110295][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.110295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.110295][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.110295][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.110295][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.110295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.110295][ T72] [ 2131.112972][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2131.113388][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2131.113388][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.113388][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.113388][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.113388][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.113388][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.113388][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.113388][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.113388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.113388][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.113388][ T72] netlink_unicast+0x449/0x710 [ 2131.113388][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.113388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.113388][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.113388][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.113388][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.113388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.113388][ T72] [ 2131.116527][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2131.116527][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.116527][ T72] ipv6_find_idev+0x102/0x170 [ 2131.116527][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.116527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.116527][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.116527][ T72] netlink_unicast+0x449/0x710 [ 2131.116527][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.116527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.116527][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.116527][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.116527][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.116527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.116527][ T72] [ 2131.118906][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2131.118906][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.118906][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.118906][ T72] ipv6_find_idev+0x102/0x170 [ 2131.118906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.118906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.118906][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.118906][ T72] netlink_unicast+0x449/0x710 [ 2131.118906][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.118906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.118906][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.118906][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.118906][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.118906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.118906][ T72] [ 2131.121691][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2131.122196][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2131.122196][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.122196][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.122196][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.122196][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.122196][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.122196][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.122196][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.122196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.122196][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.122196][ T72] netlink_unicast+0x449/0x710 [ 2131.122196][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.122196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.122196][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.122196][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.122196][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.122196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.122196][ T72] [ 2131.125287][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2131.125287][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.125287][ T72] ipv6_find_idev+0x102/0x170 [ 2131.125287][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.125287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.125287][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.125287][ T72] netlink_unicast+0x449/0x710 [ 2131.125287][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.125287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.125287][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.125287][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.125287][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.125287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.125287][ T72] [ 2131.127758][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2131.127758][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.127758][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.127758][ T72] ipv6_find_idev+0x102/0x170 [ 2131.127758][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.127758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.127758][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.127758][ T72] netlink_unicast+0x449/0x710 [ 2131.127758][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.127758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.127758][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.127758][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.127758][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.127758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.127758][ T72] [ 2131.130866][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2131.131412][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2131.131412][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.131412][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.131412][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.131412][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.131412][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.131412][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.131412][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.131412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.131412][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.131412][ T72] netlink_unicast+0x449/0x710 [ 2131.131412][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.131412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.131412][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.131412][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.131412][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.131412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.131412][ T72] [ 2131.134468][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2131.134468][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.134468][ T72] ipv6_find_idev+0x102/0x170 [ 2131.134468][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.134468][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.134468][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.134468][ T72] netlink_unicast+0x449/0x710 [ 2131.134468][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.134468][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.134468][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.134468][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.134468][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.134468][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.134468][ T72] [ 2131.136269][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2131.136269][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.136269][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.136269][ T72] ipv6_find_idev+0x102/0x170 [ 2131.136269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.136269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.136269][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.136269][ T72] netlink_unicast+0x449/0x710 [ 2131.136269][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.136269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.136269][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.136269][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.136269][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.136269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.136269][ T72] [ 2131.138978][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2131.139506][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2131.139506][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.139506][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.139506][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.139506][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.139506][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.139506][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.139506][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.139506][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.139506][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.139506][ T72] netlink_unicast+0x449/0x710 [ 2131.139506][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.139506][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.139506][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.139506][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.139506][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.139506][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.139506][ T72] [ 2131.142870][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2131.142870][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.142870][ T72] ipv6_find_idev+0x102/0x170 [ 2131.142870][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.142870][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.142870][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.142870][ T72] netlink_unicast+0x449/0x710 [ 2131.142870][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.142870][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.142870][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.142870][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.142870][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.142870][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.142870][ T72] [ 2131.145548][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2131.145548][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.145548][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.145548][ T72] ipv6_find_idev+0x102/0x170 [ 2131.145548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.145548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.145548][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.145548][ T72] netlink_unicast+0x449/0x710 [ 2131.145548][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.145548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.145548][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.145548][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.145548][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.145548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.145548][ T72] [ 2131.148611][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2131.149156][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2131.149156][ T72] netdev_get_by_index+0x5e/0x80 [ 2131.149156][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2131.149156][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2131.149156][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2131.149156][ T72] ipv6_add_addr+0x411/0x2000 [ 2131.149156][ T72] inet6_addr_add+0x30e/0xa40 [ 2131.149156][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2131.149156][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.149156][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.149156][ T72] netlink_unicast+0x449/0x710 [ 2131.149156][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.149156][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.149156][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.149156][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.149156][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.149156][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.149156][ T72] [ 2131.152762][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2131.152762][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2131.152762][ T72] ipv6_find_idev+0x102/0x170 [ 2131.152762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.152762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.152762][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.152762][ T72] netlink_unicast+0x449/0x710 [ 2131.152762][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.152762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.152762][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.152762][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.152762][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.152762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.152762][ T72] [ 2131.155409][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2131.155409][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2131.155409][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2131.155409][ T72] ipv6_find_idev+0x102/0x170 [ 2131.155409][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2131.155409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2131.155409][ T72] netlink_rcv_skb+0x130/0x360 [ 2131.155409][ T72] netlink_unicast+0x449/0x710 [ 2131.155409][ T72] netlink_sendmsg+0x723/0xbe0 [ 2131.155409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2131.155409][ T72] ___sys_sendmsg+0xee/0x170 [ 2131.155409][ T72] __sys_sendmsg+0xcd/0x170 [ 2131.155409][ T72] do_syscall_64+0xc6/0x1e0 [ 2131.155409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2131.155409][ T72] [ 2141.398845][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2141.399268][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2141.399268][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.399268][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.399268][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.399268][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.399268][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.399268][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.399268][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.399268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.399268][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.399268][ T72] netlink_unicast+0x449/0x710 [ 2141.399268][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.399268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.399268][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.399268][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.399268][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.399268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.399268][ T72] [ 2141.401365][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2141.401365][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.401365][ T72] ipv6_find_idev+0x102/0x170 [ 2141.401365][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.401365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.401365][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.401365][ T72] netlink_unicast+0x449/0x710 [ 2141.401365][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.401365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.401365][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.401365][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.401365][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.401365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.401365][ T72] [ 2141.402917][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2141.402917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.402917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.402917][ T72] ipv6_find_idev+0x102/0x170 [ 2141.402917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.402917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.402917][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.402917][ T72] netlink_unicast+0x449/0x710 [ 2141.402917][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.402917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.402917][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.402917][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.402917][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.402917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.402917][ T72] [ 2141.404659][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2141.404949][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2141.404949][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.404949][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.404949][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.404949][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.404949][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.404949][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.404949][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.404949][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.404949][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.404949][ T72] netlink_unicast+0x449/0x710 [ 2141.404949][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.404949][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.404949][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.404949][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.404949][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.404949][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.404949][ T72] [ 2141.406971][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2141.406971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.406971][ T72] ipv6_find_idev+0x102/0x170 [ 2141.406971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.406971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.406971][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.406971][ T72] netlink_unicast+0x449/0x710 [ 2141.406971][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.406971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.406971][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.406971][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.406971][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.406971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.406971][ T72] [ 2141.408528][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2141.408528][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.408528][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.408528][ T72] ipv6_find_idev+0x102/0x170 [ 2141.408528][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.408528][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.408528][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.408528][ T72] netlink_unicast+0x449/0x710 [ 2141.408528][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.408528][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.408528][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.408528][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.408528][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.408528][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.408528][ T72] [ 2141.410245][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2141.410515][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2141.410515][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.410515][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.410515][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.410515][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.410515][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.410515][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.410515][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.410515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.410515][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.410515][ T72] netlink_unicast+0x449/0x710 [ 2141.410515][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.410515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.410515][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.410515][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.410515][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.410515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.410515][ T72] [ 2141.412547][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2141.412547][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.412547][ T72] ipv6_find_idev+0x102/0x170 [ 2141.412547][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.412547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.412547][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.412547][ T72] netlink_unicast+0x449/0x710 [ 2141.412547][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.412547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.412547][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.412547][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.412547][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.412547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.412547][ T72] [ 2141.414095][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2141.414095][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.414095][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.414095][ T72] ipv6_find_idev+0x102/0x170 [ 2141.414095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.414095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.414095][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.414095][ T72] netlink_unicast+0x449/0x710 [ 2141.414095][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.414095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.414095][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.414095][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.414095][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.414095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.414095][ T72] [ 2141.415801][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2141.416068][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2141.416068][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.416068][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.416068][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.416068][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.416068][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.416068][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.416068][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.416068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.416068][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.416068][ T72] netlink_unicast+0x449/0x710 [ 2141.416068][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.416068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.416068][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.416068][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.416068][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.416068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.416068][ T72] [ 2141.418074][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2141.418074][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.418074][ T72] ipv6_find_idev+0x102/0x170 [ 2141.418074][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.418074][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.418074][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.418074][ T72] netlink_unicast+0x449/0x710 [ 2141.418074][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.418074][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.418074][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.418074][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.418074][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.418074][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.418074][ T72] [ 2141.419618][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2141.419618][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.419618][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.419618][ T72] ipv6_find_idev+0x102/0x170 [ 2141.419618][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.419618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.419618][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.419618][ T72] netlink_unicast+0x449/0x710 [ 2141.419618][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.419618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.419618][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.419618][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.419618][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.419618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.419618][ T72] [ 2141.421759][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2141.422347][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2141.422347][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.422347][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.422347][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.422347][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.422347][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.422347][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.422347][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.422347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.422347][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.422347][ T72] netlink_unicast+0x449/0x710 [ 2141.422347][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.422347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.422347][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.422347][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.422347][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.422347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.422347][ T72] [ 2141.424373][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2141.424373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.424373][ T72] ipv6_find_idev+0x102/0x170 [ 2141.424373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.424373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.424373][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.424373][ T72] netlink_unicast+0x449/0x710 [ 2141.424373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.424373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.424373][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.424373][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.424373][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.424373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.424373][ T72] [ 2141.425934][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2141.425934][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.425934][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.425934][ T72] ipv6_find_idev+0x102/0x170 [ 2141.425934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.425934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.425934][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.425934][ T72] netlink_unicast+0x449/0x710 [ 2141.425934][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.425934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.425934][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.425934][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.425934][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.425934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.425934][ T72] [ 2141.427627][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2141.427956][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2141.427956][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.427956][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.427956][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.427956][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.427956][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.427956][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.427956][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.427956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.427956][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.427956][ T72] netlink_unicast+0x449/0x710 [ 2141.427956][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.427956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.427956][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.427956][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.427956][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.427956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.427956][ T72] [ 2141.429988][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2141.429988][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.429988][ T72] ipv6_find_idev+0x102/0x170 [ 2141.429988][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.429988][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.429988][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.429988][ T72] netlink_unicast+0x449/0x710 [ 2141.429988][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.429988][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.429988][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.429988][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.429988][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.429988][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.429988][ T72] [ 2141.431623][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2141.431623][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.431623][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.431623][ T72] ipv6_find_idev+0x102/0x170 [ 2141.431623][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.431623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.431623][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.431623][ T72] netlink_unicast+0x449/0x710 [ 2141.431623][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.431623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.431623][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.431623][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.431623][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.431623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.431623][ T72] [ 2141.433491][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2141.433837][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2141.433837][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.433837][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.433837][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.433837][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.433837][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.433837][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.433837][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.433837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.433837][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.433837][ T72] netlink_unicast+0x449/0x710 [ 2141.433837][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.433837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.433837][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.433837][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.433837][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.433837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.433837][ T72] [ 2141.435969][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2141.435969][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.435969][ T72] ipv6_find_idev+0x102/0x170 [ 2141.435969][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.435969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.435969][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.435969][ T72] netlink_unicast+0x449/0x710 [ 2141.435969][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.435969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.435969][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.435969][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.435969][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.435969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.435969][ T72] [ 2141.437670][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2141.437670][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.437670][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.437670][ T72] ipv6_find_idev+0x102/0x170 [ 2141.437670][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.437670][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.437670][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.437670][ T72] netlink_unicast+0x449/0x710 [ 2141.437670][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.437670][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.437670][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.437670][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.437670][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.437670][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.437670][ T72] [ 2141.439470][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2141.439815][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2141.439815][ T72] netdev_get_by_index+0x5e/0x80 [ 2141.439815][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2141.439815][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2141.439815][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2141.439815][ T72] ipv6_add_addr+0x411/0x2000 [ 2141.439815][ T72] inet6_addr_add+0x30e/0xa40 [ 2141.439815][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2141.439815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.439815][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.439815][ T72] netlink_unicast+0x449/0x710 [ 2141.439815][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.439815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.439815][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.439815][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.439815][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.439815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.439815][ T72] [ 2141.442000][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2141.442000][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2141.442000][ T72] ipv6_find_idev+0x102/0x170 [ 2141.442000][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.442000][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.442000][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.442000][ T72] netlink_unicast+0x449/0x710 [ 2141.442000][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.442000][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.442000][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.442000][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.442000][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.442000][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.442000][ T72] [ 2141.443610][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2141.443610][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2141.443610][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2141.443610][ T72] ipv6_find_idev+0x102/0x170 [ 2141.443610][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2141.443610][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2141.443610][ T72] netlink_rcv_skb+0x130/0x360 [ 2141.443610][ T72] netlink_unicast+0x449/0x710 [ 2141.443610][ T72] netlink_sendmsg+0x723/0xbe0 [ 2141.443610][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2141.443610][ T72] ___sys_sendmsg+0xee/0x170 [ 2141.443610][ T72] __sys_sendmsg+0xcd/0x170 [ 2141.443610][ T72] do_syscall_64+0xc6/0x1e0 [ 2141.443610][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2141.443610][ T72] [ 2151.566866][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2151.567292][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2151.567292][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.567292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.567292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.567292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.567292][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.567292][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.567292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.567292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.567292][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.567292][ T72] netlink_unicast+0x449/0x710 [ 2151.567292][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.567292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.567292][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.567292][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.567292][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.567292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.567292][ T72] [ 2151.569339][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2151.569339][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.569339][ T72] ipv6_find_idev+0x102/0x170 [ 2151.569339][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.569339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.569339][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.569339][ T72] netlink_unicast+0x449/0x710 [ 2151.569339][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.569339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.569339][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.569339][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.569339][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.569339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.569339][ T72] [ 2151.570901][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2151.570901][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.570901][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.570901][ T72] ipv6_find_idev+0x102/0x170 [ 2151.570901][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.570901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.570901][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.570901][ T72] netlink_unicast+0x449/0x710 [ 2151.570901][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.570901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.570901][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.570901][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.570901][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.570901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.570901][ T72] [ 2151.572622][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2151.572919][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2151.572919][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.572919][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.572919][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.572919][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.572919][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.572919][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.572919][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.572919][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.572919][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.572919][ T72] netlink_unicast+0x449/0x710 [ 2151.572919][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.572919][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.572919][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.572919][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.572919][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.572919][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.572919][ T72] [ 2151.574909][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2151.574909][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.574909][ T72] ipv6_find_idev+0x102/0x170 [ 2151.574909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.574909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.574909][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.574909][ T72] netlink_unicast+0x449/0x710 [ 2151.574909][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.574909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.574909][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.574909][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.574909][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.574909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.574909][ T72] [ 2151.576447][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2151.576447][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.576447][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.576447][ T72] ipv6_find_idev+0x102/0x170 [ 2151.576447][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.576447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.576447][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.576447][ T72] netlink_unicast+0x449/0x710 [ 2151.576447][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.576447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.576447][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.576447][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.576447][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.576447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.576447][ T72] [ 2151.578131][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2151.578400][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2151.578400][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.578400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.578400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.578400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.578400][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.578400][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.578400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.578400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.578400][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.578400][ T72] netlink_unicast+0x449/0x710 [ 2151.578400][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.578400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.578400][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.578400][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.578400][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.578400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.578400][ T72] [ 2151.580376][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2151.580376][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.580376][ T72] ipv6_find_idev+0x102/0x170 [ 2151.580376][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.580376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.580376][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.580376][ T72] netlink_unicast+0x449/0x710 [ 2151.580376][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.580376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.580376][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.580376][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.580376][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.580376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.580376][ T72] [ 2151.581915][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2151.581915][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.581915][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.581915][ T72] ipv6_find_idev+0x102/0x170 [ 2151.581915][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.581915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.581915][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.581915][ T72] netlink_unicast+0x449/0x710 [ 2151.581915][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.581915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.581915][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.581915][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.581915][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.581915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.581915][ T72] [ 2151.583604][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2151.584317][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2151.584317][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.584317][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.584317][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.584317][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.584317][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.584317][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.584317][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.584317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.584317][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.584317][ T72] netlink_unicast+0x449/0x710 [ 2151.584317][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.584317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.584317][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.584317][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.584317][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.584317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.584317][ T72] [ 2151.586301][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2151.586301][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.586301][ T72] ipv6_find_idev+0x102/0x170 [ 2151.586301][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.586301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.586301][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.586301][ T72] netlink_unicast+0x449/0x710 [ 2151.586301][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.586301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.586301][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.586301][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.586301][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.586301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.586301][ T72] [ 2151.587823][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2151.587823][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.587823][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.587823][ T72] ipv6_find_idev+0x102/0x170 [ 2151.587823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.587823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.587823][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.587823][ T72] netlink_unicast+0x449/0x710 [ 2151.587823][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.587823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.587823][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.587823][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.587823][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.587823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.587823][ T72] [ 2151.589543][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2151.589857][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2151.589857][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.589857][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.589857][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.589857][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.589857][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.589857][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.589857][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.589857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.589857][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.589857][ T72] netlink_unicast+0x449/0x710 [ 2151.589857][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.589857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.589857][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.589857][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.589857][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.589857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.589857][ T72] [ 2151.591857][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2151.591857][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.591857][ T72] ipv6_find_idev+0x102/0x170 [ 2151.591857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.591857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.591857][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.591857][ T72] netlink_unicast+0x449/0x710 [ 2151.591857][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.591857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.591857][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.591857][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.591857][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.591857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.591857][ T72] [ 2151.593387][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2151.593387][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.593387][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.593387][ T72] ipv6_find_idev+0x102/0x170 [ 2151.593387][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.593387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.593387][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.593387][ T72] netlink_unicast+0x449/0x710 [ 2151.593387][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.593387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.593387][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.593387][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.593387][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.593387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.593387][ T72] [ 2151.595095][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2151.595412][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2151.595412][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.595412][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.595412][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.595412][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.595412][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.595412][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.595412][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.595412][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.595412][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.595412][ T72] netlink_unicast+0x449/0x710 [ 2151.595412][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.595412][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.595412][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.595412][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.595412][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.595412][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.595412][ T72] [ 2151.597501][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2151.597501][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.597501][ T72] ipv6_find_idev+0x102/0x170 [ 2151.597501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.597501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.597501][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.597501][ T72] netlink_unicast+0x449/0x710 [ 2151.597501][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.597501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.597501][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.597501][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.597501][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.597501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.597501][ T72] [ 2151.599143][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2151.599143][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.599143][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.599143][ T72] ipv6_find_idev+0x102/0x170 [ 2151.599143][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.599143][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.599143][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.599143][ T72] netlink_unicast+0x449/0x710 [ 2151.599143][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.599143][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.599143][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.599143][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.599143][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.599143][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.599143][ T72] [ 2151.601223][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2151.601534][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2151.601534][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.601534][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.601534][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.601534][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.601534][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.601534][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.601534][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.601534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.601534][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.601534][ T72] netlink_unicast+0x449/0x710 [ 2151.601534][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.601534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.601534][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.601534][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.601534][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.601534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.601534][ T72] [ 2151.603692][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2151.603692][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.603692][ T72] ipv6_find_idev+0x102/0x170 [ 2151.603692][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.603692][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.603692][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.603692][ T72] netlink_unicast+0x449/0x710 [ 2151.603692][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.603692][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.603692][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.603692][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.603692][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.603692][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.603692][ T72] [ 2151.605394][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2151.605394][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.605394][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.605394][ T72] ipv6_find_idev+0x102/0x170 [ 2151.605394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.605394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.605394][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.605394][ T72] netlink_unicast+0x449/0x710 [ 2151.605394][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.605394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.605394][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.605394][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.605394][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.605394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.605394][ T72] [ 2151.607286][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2151.607609][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2151.607609][ T72] netdev_get_by_index+0x5e/0x80 [ 2151.607609][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2151.607609][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2151.607609][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2151.607609][ T72] ipv6_add_addr+0x411/0x2000 [ 2151.607609][ T72] inet6_addr_add+0x30e/0xa40 [ 2151.607609][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2151.607609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.607609][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.607609][ T72] netlink_unicast+0x449/0x710 [ 2151.607609][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.607609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.607609][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.607609][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.607609][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.607609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.607609][ T72] [ 2151.609780][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2151.609780][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2151.609780][ T72] ipv6_find_idev+0x102/0x170 [ 2151.609780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.609780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.609780][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.609780][ T72] netlink_unicast+0x449/0x710 [ 2151.609780][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.609780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.609780][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.609780][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.609780][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.609780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.609780][ T72] [ 2151.611554][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2151.611554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2151.611554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2151.611554][ T72] ipv6_find_idev+0x102/0x170 [ 2151.611554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2151.611554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2151.611554][ T72] netlink_rcv_skb+0x130/0x360 [ 2151.611554][ T72] netlink_unicast+0x449/0x710 [ 2151.611554][ T72] netlink_sendmsg+0x723/0xbe0 [ 2151.611554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2151.611554][ T72] ___sys_sendmsg+0xee/0x170 [ 2151.611554][ T72] __sys_sendmsg+0xcd/0x170 [ 2151.611554][ T72] do_syscall_64+0xc6/0x1e0 [ 2151.611554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2151.611554][ T72] [ 2161.854804][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2161.855226][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2161.855226][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.855226][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.855226][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.855226][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.855226][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.855226][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.855226][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.855226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.855226][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.855226][ T72] netlink_unicast+0x449/0x710 [ 2161.855226][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.855226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.855226][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.855226][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.855226][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.855226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.855226][ T72] [ 2161.857882][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2161.857882][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.857882][ T72] ipv6_find_idev+0x102/0x170 [ 2161.857882][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.857882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.857882][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.857882][ T72] netlink_unicast+0x449/0x710 [ 2161.857882][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.857882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.857882][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.857882][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.857882][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.857882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.857882][ T72] [ 2161.859418][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2161.859418][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.859418][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.859418][ T72] ipv6_find_idev+0x102/0x170 [ 2161.859418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.859418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.859418][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.859418][ T72] netlink_unicast+0x449/0x710 [ 2161.859418][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.859418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.859418][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.859418][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.859418][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.859418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.859418][ T72] [ 2161.861135][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2161.861815][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2161.861815][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.861815][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.861815][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.861815][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.861815][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.861815][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.861815][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.861815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.861815][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.861815][ T72] netlink_unicast+0x449/0x710 [ 2161.861815][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.861815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.861815][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.861815][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.861815][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.861815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.861815][ T72] [ 2161.863807][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2161.863807][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.863807][ T72] ipv6_find_idev+0x102/0x170 [ 2161.863807][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.863807][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.863807][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.863807][ T72] netlink_unicast+0x449/0x710 [ 2161.863807][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.863807][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.863807][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.863807][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.863807][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.863807][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.863807][ T72] [ 2161.865345][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2161.865345][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.865345][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.865345][ T72] ipv6_find_idev+0x102/0x170 [ 2161.865345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.865345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.865345][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.865345][ T72] netlink_unicast+0x449/0x710 [ 2161.865345][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.865345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.865345][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.865345][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.865345][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.865345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.865345][ T72] [ 2161.867059][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2161.867332][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2161.867332][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.867332][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.867332][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.867332][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.867332][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.867332][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.867332][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.867332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.867332][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.867332][ T72] netlink_unicast+0x449/0x710 [ 2161.867332][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.867332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.867332][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.867332][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.867332][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.867332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.867332][ T72] [ 2161.869320][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2161.869320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.869320][ T72] ipv6_find_idev+0x102/0x170 [ 2161.869320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.869320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.869320][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.869320][ T72] netlink_unicast+0x449/0x710 [ 2161.869320][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.869320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.869320][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.869320][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.869320][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.869320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.869320][ T72] [ 2161.870883][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2161.870883][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.870883][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.870883][ T72] ipv6_find_idev+0x102/0x170 [ 2161.870883][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.870883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.870883][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.870883][ T72] netlink_unicast+0x449/0x710 [ 2161.870883][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.870883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.870883][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.870883][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.870883][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.870883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.870883][ T72] [ 2161.872617][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2161.873339][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2161.873339][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.873339][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.873339][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.873339][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.873339][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.873339][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.873339][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.873339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.873339][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.873339][ T72] netlink_unicast+0x449/0x710 [ 2161.873339][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.873339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.873339][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.873339][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.873339][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.873339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.873339][ T72] [ 2161.875362][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2161.875362][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.875362][ T72] ipv6_find_idev+0x102/0x170 [ 2161.875362][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.875362][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.875362][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.875362][ T72] netlink_unicast+0x449/0x710 [ 2161.875362][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.875362][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.875362][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.875362][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.875362][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.875362][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.875362][ T72] [ 2161.876895][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2161.876895][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.876895][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.876895][ T72] ipv6_find_idev+0x102/0x170 [ 2161.876895][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.876895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.876895][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.876895][ T72] netlink_unicast+0x449/0x710 [ 2161.876895][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.876895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.876895][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.876895][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.876895][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.876895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.876895][ T72] [ 2161.878660][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2161.878983][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2161.878983][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.878983][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.878983][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.878983][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.878983][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.878983][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.878983][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.878983][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.878983][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.878983][ T72] netlink_unicast+0x449/0x710 [ 2161.878983][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.878983][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.878983][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.878983][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.878983][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.878983][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.878983][ T72] [ 2161.881000][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2161.881000][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.881000][ T72] ipv6_find_idev+0x102/0x170 [ 2161.881000][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.881000][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.881000][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.881000][ T72] netlink_unicast+0x449/0x710 [ 2161.881000][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.881000][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.881000][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.881000][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.881000][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.881000][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.881000][ T72] [ 2161.882593][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2161.882593][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.882593][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.882593][ T72] ipv6_find_idev+0x102/0x170 [ 2161.882593][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.882593][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.882593][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.882593][ T72] netlink_unicast+0x449/0x710 [ 2161.882593][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.882593][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.882593][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.882593][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.882593][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.882593][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.882593][ T72] [ 2161.884317][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2161.884632][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2161.884632][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.884632][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.884632][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.884632][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.884632][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.884632][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.884632][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.884632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.884632][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.884632][ T72] netlink_unicast+0x449/0x710 [ 2161.884632][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.884632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.884632][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.884632][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.884632][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.884632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.884632][ T72] [ 2161.886716][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2161.886716][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.886716][ T72] ipv6_find_idev+0x102/0x170 [ 2161.886716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.886716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.886716][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.886716][ T72] netlink_unicast+0x449/0x710 [ 2161.886716][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.886716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.886716][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.886716][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.886716][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.886716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.886716][ T72] [ 2161.888313][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2161.888313][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.888313][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.888313][ T72] ipv6_find_idev+0x102/0x170 [ 2161.888313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.888313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.888313][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.888313][ T72] netlink_unicast+0x449/0x710 [ 2161.888313][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.888313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.888313][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.888313][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.888313][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.888313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.888313][ T72] [ 2161.890188][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2161.890502][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2161.890502][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.890502][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.890502][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.890502][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.890502][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.890502][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.890502][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.890502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.890502][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.890502][ T72] netlink_unicast+0x449/0x710 [ 2161.890502][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.890502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.890502][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.890502][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.890502][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.890502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.890502][ T72] [ 2161.892559][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2161.892559][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.892559][ T72] ipv6_find_idev+0x102/0x170 [ 2161.892559][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.892559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.892559][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.892559][ T72] netlink_unicast+0x449/0x710 [ 2161.892559][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.892559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.892559][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.892559][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.892559][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.892559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.892559][ T72] [ 2161.894256][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2161.894256][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.894256][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.894256][ T72] ipv6_find_idev+0x102/0x170 [ 2161.894256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.894256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.894256][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.894256][ T72] netlink_unicast+0x449/0x710 [ 2161.894256][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.894256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.894256][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.894256][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.894256][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.894256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.894256][ T72] [ 2161.896034][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2161.896356][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2161.896356][ T72] netdev_get_by_index+0x5e/0x80 [ 2161.896356][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2161.896356][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2161.896356][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2161.896356][ T72] ipv6_add_addr+0x411/0x2000 [ 2161.896356][ T72] inet6_addr_add+0x30e/0xa40 [ 2161.896356][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2161.896356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.896356][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.896356][ T72] netlink_unicast+0x449/0x710 [ 2161.896356][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.896356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.896356][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.896356][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.896356][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.896356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.896356][ T72] [ 2161.898575][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2161.898575][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2161.898575][ T72] ipv6_find_idev+0x102/0x170 [ 2161.898575][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.898575][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.898575][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.898575][ T72] netlink_unicast+0x449/0x710 [ 2161.898575][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.898575][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.898575][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.898575][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.898575][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.898575][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.898575][ T72] [ 2161.900170][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2161.900170][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2161.900170][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2161.900170][ T72] ipv6_find_idev+0x102/0x170 [ 2161.900170][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2161.900170][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2161.900170][ T72] netlink_rcv_skb+0x130/0x360 [ 2161.900170][ T72] netlink_unicast+0x449/0x710 [ 2161.900170][ T72] netlink_sendmsg+0x723/0xbe0 [ 2161.900170][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2161.900170][ T72] ___sys_sendmsg+0xee/0x170 [ 2161.900170][ T72] __sys_sendmsg+0xcd/0x170 [ 2161.900170][ T72] do_syscall_64+0xc6/0x1e0 [ 2161.900170][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2161.900170][ T72] [ 2172.142946][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2172.143352][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2172.143352][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.143352][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.143352][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.143352][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.143352][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.143352][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.143352][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.143352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.143352][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.143352][ T72] netlink_unicast+0x449/0x710 [ 2172.143352][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.143352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.143352][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.143352][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.143352][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.143352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.143352][ T72] [ 2172.145343][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2172.145343][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.145343][ T72] ipv6_find_idev+0x102/0x170 [ 2172.145343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.145343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.145343][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.145343][ T72] netlink_unicast+0x449/0x710 [ 2172.145343][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.145343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.145343][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.145343][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.145343][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.145343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.145343][ T72] [ 2172.146861][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2172.146861][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.146861][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.146861][ T72] ipv6_find_idev+0x102/0x170 [ 2172.146861][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.146861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.146861][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.146861][ T72] netlink_unicast+0x449/0x710 [ 2172.146861][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.146861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.146861][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.146861][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.146861][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.146861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.146861][ T72] [ 2172.148537][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2172.148824][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2172.148824][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.148824][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.148824][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.148824][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.148824][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.148824][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.148824][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.148824][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.148824][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.148824][ T72] netlink_unicast+0x449/0x710 [ 2172.148824][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.148824][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.148824][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.148824][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.148824][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.148824][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.148824][ T72] [ 2172.151186][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2172.151186][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.151186][ T72] ipv6_find_idev+0x102/0x170 [ 2172.151186][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.151186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.151186][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.151186][ T72] netlink_unicast+0x449/0x710 [ 2172.151186][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.151186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.151186][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.151186][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.151186][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.151186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.151186][ T72] [ 2172.152711][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2172.152711][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.152711][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.152711][ T72] ipv6_find_idev+0x102/0x170 [ 2172.152711][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.152711][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.152711][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.152711][ T72] netlink_unicast+0x449/0x710 [ 2172.152711][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.152711][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.152711][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.152711][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.152711][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.152711][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.152711][ T72] [ 2172.154386][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2172.154652][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2172.154652][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.154652][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.154652][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.154652][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.154652][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.154652][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.154652][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.154652][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.154652][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.154652][ T72] netlink_unicast+0x449/0x710 [ 2172.154652][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.154652][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.154652][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.154652][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.154652][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.154652][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.154652][ T72] [ 2172.156623][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2172.156623][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.156623][ T72] ipv6_find_idev+0x102/0x170 [ 2172.156623][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.156623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.156623][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.156623][ T72] netlink_unicast+0x449/0x710 [ 2172.156623][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.156623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.156623][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.156623][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.156623][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.156623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.156623][ T72] [ 2172.158139][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2172.158139][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.158139][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.158139][ T72] ipv6_find_idev+0x102/0x170 [ 2172.158139][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.158139][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.158139][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.158139][ T72] netlink_unicast+0x449/0x710 [ 2172.158139][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.158139][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.158139][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.158139][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.158139][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.158139][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.158139][ T72] [ 2172.159797][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2172.160070][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2172.160070][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.160070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.160070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.160070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.160070][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.160070][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.160070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.160070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.160070][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.160070][ T72] netlink_unicast+0x449/0x710 [ 2172.160070][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.160070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.160070][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.160070][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.160070][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.160070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.160070][ T72] [ 2172.162049][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2172.162049][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.162049][ T72] ipv6_find_idev+0x102/0x170 [ 2172.162049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.162049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.162049][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.162049][ T72] netlink_unicast+0x449/0x710 [ 2172.162049][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.162049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.162049][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.162049][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.162049][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.162049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.162049][ T72] [ 2172.163570][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2172.163570][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.163570][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.163570][ T72] ipv6_find_idev+0x102/0x170 [ 2172.163570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.163570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.163570][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.163570][ T72] netlink_unicast+0x449/0x710 [ 2172.163570][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.163570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.163570][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.163570][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.163570][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.163570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.163570][ T72] [ 2172.165281][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2172.165543][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2172.165543][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.165543][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.165543][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.165543][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.165543][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.165543][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.165543][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.165543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.165543][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.165543][ T72] netlink_unicast+0x449/0x710 [ 2172.165543][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.165543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.165543][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.165543][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.165543][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.165543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.165543][ T72] [ 2172.167515][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2172.167515][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.167515][ T72] ipv6_find_idev+0x102/0x170 [ 2172.167515][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.167515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.167515][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.167515][ T72] netlink_unicast+0x449/0x710 [ 2172.167515][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.167515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.167515][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.167515][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.167515][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.167515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.167515][ T72] [ 2172.169095][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2172.169095][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.169095][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.169095][ T72] ipv6_find_idev+0x102/0x170 [ 2172.169095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.169095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.169095][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.169095][ T72] netlink_unicast+0x449/0x710 [ 2172.169095][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.169095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.169095][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.169095][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.169095][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.169095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.169095][ T72] [ 2172.171046][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2172.171303][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2172.171303][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.171303][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.171303][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.171303][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.171303][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.171303][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.171303][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.171303][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.171303][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.171303][ T72] netlink_unicast+0x449/0x710 [ 2172.171303][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.171303][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.171303][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.171303][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.171303][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.171303][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.171303][ T72] [ 2172.173517][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2172.173517][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.173517][ T72] ipv6_find_idev+0x102/0x170 [ 2172.173517][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.173517][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.173517][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.173517][ T72] netlink_unicast+0x449/0x710 [ 2172.173517][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.173517][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.173517][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.173517][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.173517][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.173517][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.173517][ T72] [ 2172.175233][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2172.175233][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.175233][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.175233][ T72] ipv6_find_idev+0x102/0x170 [ 2172.175233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.175233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.175233][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.175233][ T72] netlink_unicast+0x449/0x710 [ 2172.175233][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.175233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.175233][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.175233][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.175233][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.175233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.175233][ T72] [ 2172.177114][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2172.177374][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2172.177374][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.177374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.177374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.177374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.177374][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.177374][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.177374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.177374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.177374][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.177374][ T72] netlink_unicast+0x449/0x710 [ 2172.177374][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.177374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.177374][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.177374][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.177374][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.177374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.177374][ T72] [ 2172.179637][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2172.179637][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.179637][ T72] ipv6_find_idev+0x102/0x170 [ 2172.179637][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.179637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.179637][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.179637][ T72] netlink_unicast+0x449/0x710 [ 2172.179637][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.179637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.179637][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.179637][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.179637][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.179637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.179637][ T72] [ 2172.181395][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2172.181395][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.181395][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.181395][ T72] ipv6_find_idev+0x102/0x170 [ 2172.181395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.181395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.181395][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.181395][ T72] netlink_unicast+0x449/0x710 [ 2172.181395][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.181395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.181395][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.181395][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.181395][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.181395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.181395][ T72] [ 2172.183340][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2172.183615][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2172.183615][ T72] netdev_get_by_index+0x5e/0x80 [ 2172.183615][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2172.183615][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2172.183615][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2172.183615][ T72] ipv6_add_addr+0x411/0x2000 [ 2172.183615][ T72] inet6_addr_add+0x30e/0xa40 [ 2172.183615][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2172.183615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.183615][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.183615][ T72] netlink_unicast+0x449/0x710 [ 2172.183615][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.183615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.183615][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.183615][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.183615][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.183615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.183615][ T72] [ 2172.185762][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2172.185762][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2172.185762][ T72] ipv6_find_idev+0x102/0x170 [ 2172.185762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.185762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.185762][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.185762][ T72] netlink_unicast+0x449/0x710 [ 2172.185762][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.185762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.185762][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.185762][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.185762][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.185762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.185762][ T72] [ 2172.187455][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2172.187455][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2172.187455][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2172.187455][ T72] ipv6_find_idev+0x102/0x170 [ 2172.187455][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2172.187455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2172.187455][ T72] netlink_rcv_skb+0x130/0x360 [ 2172.187455][ T72] netlink_unicast+0x449/0x710 [ 2172.187455][ T72] netlink_sendmsg+0x723/0xbe0 [ 2172.187455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2172.187455][ T72] ___sys_sendmsg+0xee/0x170 [ 2172.187455][ T72] __sys_sendmsg+0xcd/0x170 [ 2172.187455][ T72] do_syscall_64+0xc6/0x1e0 [ 2172.187455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2172.187455][ T72] [ 2182.430878][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2182.431280][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2182.431280][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.431280][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.431280][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.431280][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.431280][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.431280][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.431280][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.431280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.431280][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.431280][ T72] netlink_unicast+0x449/0x710 [ 2182.431280][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.431280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.431280][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.431280][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.431280][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.431280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.431280][ T72] [ 2182.433263][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2182.433263][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.433263][ T72] ipv6_find_idev+0x102/0x170 [ 2182.433263][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.433263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.433263][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.433263][ T72] netlink_unicast+0x449/0x710 [ 2182.433263][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.433263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.433263][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.433263][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.433263][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.433263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.433263][ T72] [ 2182.434780][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2182.434780][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.434780][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.434780][ T72] ipv6_find_idev+0x102/0x170 [ 2182.434780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.434780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.434780][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.434780][ T72] netlink_unicast+0x449/0x710 [ 2182.434780][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.434780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.434780][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.434780][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.434780][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.434780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.434780][ T72] [ 2182.436452][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2182.436727][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2182.436727][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.436727][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.436727][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.436727][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.436727][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.436727][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.436727][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.436727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.436727][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.436727][ T72] netlink_unicast+0x449/0x710 [ 2182.436727][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.436727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.436727][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.436727][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.436727][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.436727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.436727][ T72] [ 2182.438696][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2182.438696][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.438696][ T72] ipv6_find_idev+0x102/0x170 [ 2182.438696][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.438696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.438696][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.438696][ T72] netlink_unicast+0x449/0x710 [ 2182.438696][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.438696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.438696][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.438696][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.438696][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.438696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.438696][ T72] [ 2182.440209][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2182.440209][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.440209][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.440209][ T72] ipv6_find_idev+0x102/0x170 [ 2182.440209][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.440209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.440209][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.440209][ T72] netlink_unicast+0x449/0x710 [ 2182.440209][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.440209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.440209][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.440209][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.440209][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.440209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.440209][ T72] [ 2182.441889][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2182.442153][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2182.442153][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.442153][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.442153][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.442153][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.442153][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.442153][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.442153][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.442153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.442153][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.442153][ T72] netlink_unicast+0x449/0x710 [ 2182.442153][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.442153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.442153][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.442153][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.442153][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.442153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.442153][ T72] [ 2182.444121][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2182.444121][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.444121][ T72] ipv6_find_idev+0x102/0x170 [ 2182.444121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.444121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.444121][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.444121][ T72] netlink_unicast+0x449/0x710 [ 2182.444121][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.444121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.444121][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.444121][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.444121][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.444121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.444121][ T72] [ 2182.446149][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2182.446149][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.446149][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.446149][ T72] ipv6_find_idev+0x102/0x170 [ 2182.446149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.446149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.446149][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.446149][ T72] netlink_unicast+0x449/0x710 [ 2182.446149][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.446149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.446149][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.446149][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.446149][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.446149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.446149][ T72] [ 2182.447799][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2182.448058][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2182.448058][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.448058][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.448058][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.448058][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.448058][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.448058][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.448058][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.448058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.448058][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.448058][ T72] netlink_unicast+0x449/0x710 [ 2182.448058][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.448058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.448058][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.448058][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.448058][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.448058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.448058][ T72] [ 2182.450013][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2182.450013][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.450013][ T72] ipv6_find_idev+0x102/0x170 [ 2182.450013][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.450013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.450013][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.450013][ T72] netlink_unicast+0x449/0x710 [ 2182.450013][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.450013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.450013][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.450013][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.450013][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.450013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.450013][ T72] [ 2182.451527][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2182.451527][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.451527][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.451527][ T72] ipv6_find_idev+0x102/0x170 [ 2182.451527][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.451527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.451527][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.451527][ T72] netlink_unicast+0x449/0x710 [ 2182.451527][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.451527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.451527][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.451527][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.451527][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.451527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.451527][ T72] [ 2182.453572][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2182.454211][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2182.454211][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.454211][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.454211][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.454211][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.454211][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.454211][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.454211][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.454211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.454211][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.454211][ T72] netlink_unicast+0x449/0x710 [ 2182.454211][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.454211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.454211][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.454211][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.454211][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.454211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.454211][ T72] [ 2182.456176][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2182.456176][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.456176][ T72] ipv6_find_idev+0x102/0x170 [ 2182.456176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.456176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.456176][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.456176][ T72] netlink_unicast+0x449/0x710 [ 2182.456176][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.456176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.456176][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.456176][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.456176][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.456176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.456176][ T72] [ 2182.457737][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2182.457737][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.457737][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.457737][ T72] ipv6_find_idev+0x102/0x170 [ 2182.457737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.457737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.457737][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.457737][ T72] netlink_unicast+0x449/0x710 [ 2182.457737][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.457737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.457737][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.457737][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.457737][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.457737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.457737][ T72] [ 2182.459531][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2182.459863][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2182.459863][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.459863][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.459863][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.459863][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.459863][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.459863][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.459863][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.459863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.459863][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.459863][ T72] netlink_unicast+0x449/0x710 [ 2182.459863][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.459863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.459863][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.459863][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.459863][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.459863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.459863][ T72] [ 2182.461834][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2182.461834][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.461834][ T72] ipv6_find_idev+0x102/0x170 [ 2182.461834][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.461834][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.461834][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.461834][ T72] netlink_unicast+0x449/0x710 [ 2182.461834][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.461834][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.461834][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.461834][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.461834][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.461834][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.461834][ T72] [ 2182.463356][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2182.463356][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.463356][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.463356][ T72] ipv6_find_idev+0x102/0x170 [ 2182.463356][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.463356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.463356][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.463356][ T72] netlink_unicast+0x449/0x710 [ 2182.463356][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.463356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.463356][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.463356][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.463356][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.463356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.463356][ T72] [ 2182.465323][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2182.465590][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2182.465590][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.465590][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.465590][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.465590][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.465590][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.465590][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.465590][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.465590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.465590][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.465590][ T72] netlink_unicast+0x449/0x710 [ 2182.465590][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.465590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.465590][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.465590][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.465590][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.465590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.465590][ T72] [ 2182.468211][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2182.468211][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.468211][ T72] ipv6_find_idev+0x102/0x170 [ 2182.468211][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.468211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.468211][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.468211][ T72] netlink_unicast+0x449/0x710 [ 2182.468211][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.468211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.468211][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.468211][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.468211][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.468211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.468211][ T72] [ 2182.469904][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2182.469904][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.469904][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.469904][ T72] ipv6_find_idev+0x102/0x170 [ 2182.469904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.469904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.469904][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.469904][ T72] netlink_unicast+0x449/0x710 [ 2182.469904][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.469904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.469904][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.469904][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.469904][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.469904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.469904][ T72] [ 2182.471802][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2182.472062][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2182.472062][ T72] netdev_get_by_index+0x5e/0x80 [ 2182.472062][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2182.472062][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2182.472062][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2182.472062][ T72] ipv6_add_addr+0x411/0x2000 [ 2182.472062][ T72] inet6_addr_add+0x30e/0xa40 [ 2182.472062][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2182.472062][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.472062][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.472062][ T72] netlink_unicast+0x449/0x710 [ 2182.472062][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.472062][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.472062][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.472062][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.472062][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.472062][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.472062][ T72] [ 2182.474217][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2182.474217][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2182.474217][ T72] ipv6_find_idev+0x102/0x170 [ 2182.474217][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.474217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.474217][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.474217][ T72] netlink_unicast+0x449/0x710 [ 2182.474217][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.474217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.474217][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.474217][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.474217][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.474217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.474217][ T72] [ 2182.475966][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2182.475966][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2182.475966][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2182.475966][ T72] ipv6_find_idev+0x102/0x170 [ 2182.475966][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2182.475966][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2182.475966][ T72] netlink_rcv_skb+0x130/0x360 [ 2182.475966][ T72] netlink_unicast+0x449/0x710 [ 2182.475966][ T72] netlink_sendmsg+0x723/0xbe0 [ 2182.475966][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2182.475966][ T72] ___sys_sendmsg+0xee/0x170 [ 2182.475966][ T72] __sys_sendmsg+0xcd/0x170 [ 2182.475966][ T72] do_syscall_64+0xc6/0x1e0 [ 2182.475966][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2182.475966][ T72] [ 2192.662887][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2192.663370][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2192.663370][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.663370][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.663370][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.663370][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.663370][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.663370][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.663370][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.663370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.663370][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.663370][ T72] netlink_unicast+0x449/0x710 [ 2192.663370][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.663370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.663370][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.663370][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.663370][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.663370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.663370][ T72] [ 2192.665359][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2192.665359][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.665359][ T72] ipv6_find_idev+0x102/0x170 [ 2192.665359][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.665359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.665359][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.665359][ T72] netlink_unicast+0x449/0x710 [ 2192.665359][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.665359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.665359][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.665359][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.665359][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.665359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.665359][ T72] [ 2192.666876][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2192.666876][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.666876][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.666876][ T72] ipv6_find_idev+0x102/0x170 [ 2192.666876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.666876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.666876][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.666876][ T72] netlink_unicast+0x449/0x710 [ 2192.666876][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.666876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.666876][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.666876][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.666876][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.666876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.666876][ T72] [ 2192.668539][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2192.668944][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2192.668944][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.668944][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.668944][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.668944][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.668944][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.668944][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.668944][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.668944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.668944][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.668944][ T72] netlink_unicast+0x449/0x710 [ 2192.668944][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.668944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.668944][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.668944][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.668944][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.668944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.668944][ T72] [ 2192.670925][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2192.670925][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.670925][ T72] ipv6_find_idev+0x102/0x170 [ 2192.670925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.670925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.670925][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.670925][ T72] netlink_unicast+0x449/0x710 [ 2192.670925][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.670925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.670925][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.670925][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.670925][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.670925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.670925][ T72] [ 2192.672457][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2192.672457][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.672457][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.672457][ T72] ipv6_find_idev+0x102/0x170 [ 2192.672457][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.672457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.672457][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.672457][ T72] netlink_unicast+0x449/0x710 [ 2192.672457][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.672457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.672457][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.672457][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.672457][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.672457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.672457][ T72] [ 2192.674124][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2192.674389][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2192.674389][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.674389][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.674389][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.674389][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.674389][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.674389][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.674389][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.674389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.674389][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.674389][ T72] netlink_unicast+0x449/0x710 [ 2192.674389][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.674389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.674389][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.674389][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.674389][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.674389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.674389][ T72] [ 2192.676360][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2192.676360][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.676360][ T72] ipv6_find_idev+0x102/0x170 [ 2192.676360][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.676360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.676360][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.676360][ T72] netlink_unicast+0x449/0x710 [ 2192.676360][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.676360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.676360][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.676360][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.676360][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.676360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.676360][ T72] [ 2192.677908][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2192.677908][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.677908][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.677908][ T72] ipv6_find_idev+0x102/0x170 [ 2192.677908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.677908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.677908][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.677908][ T72] netlink_unicast+0x449/0x710 [ 2192.677908][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.677908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.677908][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.677908][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.677908][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.677908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.677908][ T72] [ 2192.679565][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2192.680266][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2192.680266][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.680266][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.680266][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.680266][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.680266][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.680266][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.680266][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.680266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.680266][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.680266][ T72] netlink_unicast+0x449/0x710 [ 2192.680266][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.680266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.680266][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.680266][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.680266][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.680266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.680266][ T72] [ 2192.682228][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2192.682228][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.682228][ T72] ipv6_find_idev+0x102/0x170 [ 2192.682228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.682228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.682228][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.682228][ T72] netlink_unicast+0x449/0x710 [ 2192.682228][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.682228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.682228][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.682228][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.682228][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.682228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.682228][ T72] [ 2192.683740][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2192.683740][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.683740][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.683740][ T72] ipv6_find_idev+0x102/0x170 [ 2192.683740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.683740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.683740][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.683740][ T72] netlink_unicast+0x449/0x710 [ 2192.683740][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.683740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.683740][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.683740][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.683740][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.683740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.683740][ T72] [ 2192.685430][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2192.685694][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2192.685694][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.685694][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.685694][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.685694][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.685694][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.685694][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.685694][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.685694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.685694][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.685694][ T72] netlink_unicast+0x449/0x710 [ 2192.685694][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.685694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.685694][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.685694][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.685694][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.685694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.685694][ T72] [ 2192.687664][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2192.687664][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.687664][ T72] ipv6_find_idev+0x102/0x170 [ 2192.687664][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.687664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.687664][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.687664][ T72] netlink_unicast+0x449/0x710 [ 2192.687664][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.687664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.687664][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.687664][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.687664][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.687664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.687664][ T72] [ 2192.689171][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2192.689171][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.689171][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.689171][ T72] ipv6_find_idev+0x102/0x170 [ 2192.689171][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.689171][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.689171][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.689171][ T72] netlink_unicast+0x449/0x710 [ 2192.689171][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.689171][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.689171][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.689171][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.689171][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.689171][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.689171][ T72] [ 2192.690872][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2192.691131][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2192.691131][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.691131][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.691131][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.691131][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.691131][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.691131][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.691131][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.691131][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.691131][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.691131][ T72] netlink_unicast+0x449/0x710 [ 2192.691131][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.691131][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.691131][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.691131][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.691131][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.691131][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.691131][ T72] [ 2192.693215][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2192.693215][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.693215][ T72] ipv6_find_idev+0x102/0x170 [ 2192.693215][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.693215][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.693215][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.693215][ T72] netlink_unicast+0x449/0x710 [ 2192.693215][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.693215][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.693215][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.693215][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.693215][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.693215][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.693215][ T72] [ 2192.694984][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2192.694984][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.694984][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.694984][ T72] ipv6_find_idev+0x102/0x170 [ 2192.694984][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.694984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.694984][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.694984][ T72] netlink_unicast+0x449/0x710 [ 2192.694984][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.694984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.694984][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.694984][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.694984][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.694984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.694984][ T72] [ 2192.696857][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2192.697122][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2192.697122][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.697122][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.697122][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.697122][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.697122][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.697122][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.697122][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.697122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.697122][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.697122][ T72] netlink_unicast+0x449/0x710 [ 2192.697122][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.697122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.697122][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.697122][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.697122][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.697122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.697122][ T72] [ 2192.699376][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2192.699376][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.699376][ T72] ipv6_find_idev+0x102/0x170 [ 2192.699376][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.699376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.699376][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.699376][ T72] netlink_unicast+0x449/0x710 [ 2192.699376][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.699376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.699376][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.699376][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.699376][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.699376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.699376][ T72] [ 2192.701082][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2192.701082][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.701082][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.701082][ T72] ipv6_find_idev+0x102/0x170 [ 2192.701082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.701082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.701082][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.701082][ T72] netlink_unicast+0x449/0x710 [ 2192.701082][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.701082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.701082][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.701082][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.701082][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.701082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.701082][ T72] [ 2192.702990][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2192.703266][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2192.703266][ T72] netdev_get_by_index+0x5e/0x80 [ 2192.703266][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2192.703266][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2192.703266][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2192.703266][ T72] ipv6_add_addr+0x411/0x2000 [ 2192.703266][ T72] inet6_addr_add+0x30e/0xa40 [ 2192.703266][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2192.703266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.703266][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.703266][ T72] netlink_unicast+0x449/0x710 [ 2192.703266][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.703266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.703266][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.703266][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.703266][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.703266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.703266][ T72] [ 2192.705488][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2192.705488][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2192.705488][ T72] ipv6_find_idev+0x102/0x170 [ 2192.705488][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.705488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.705488][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.705488][ T72] netlink_unicast+0x449/0x710 [ 2192.705488][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.705488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.705488][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.705488][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.705488][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.705488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.705488][ T72] [ 2192.707208][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2192.707208][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2192.707208][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2192.707208][ T72] ipv6_find_idev+0x102/0x170 [ 2192.707208][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2192.707208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2192.707208][ T72] netlink_rcv_skb+0x130/0x360 [ 2192.707208][ T72] netlink_unicast+0x449/0x710 [ 2192.707208][ T72] netlink_sendmsg+0x723/0xbe0 [ 2192.707208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2192.707208][ T72] ___sys_sendmsg+0xee/0x170 [ 2192.707208][ T72] __sys_sendmsg+0xcd/0x170 [ 2192.707208][ T72] do_syscall_64+0xc6/0x1e0 [ 2192.707208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2192.707208][ T72] [ 2202.838895][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2202.839339][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2202.839339][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.839339][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.839339][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.839339][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.839339][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.839339][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.839339][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.839339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.839339][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.839339][ T72] netlink_unicast+0x449/0x710 [ 2202.839339][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.839339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.839339][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.839339][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.839339][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.839339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.839339][ T72] [ 2202.841667][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2202.841667][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.841667][ T72] ipv6_find_idev+0x102/0x170 [ 2202.841667][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.841667][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.841667][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.841667][ T72] netlink_unicast+0x449/0x710 [ 2202.841667][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.841667][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.841667][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.841667][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.841667][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.841667][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.841667][ T72] [ 2202.843328][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2202.843328][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.843328][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.843328][ T72] ipv6_find_idev+0x102/0x170 [ 2202.843328][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.843328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.843328][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.843328][ T72] netlink_unicast+0x449/0x710 [ 2202.843328][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.843328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.843328][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.843328][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.843328][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.843328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.843328][ T72] [ 2202.845157][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2202.845471][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2202.845471][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.845471][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.845471][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.845471][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.845471][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.845471][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.845471][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.845471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.845471][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.845471][ T72] netlink_unicast+0x449/0x710 [ 2202.845471][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.845471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.845471][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.845471][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.845471][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.845471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.845471][ T72] [ 2202.847737][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2202.847737][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.847737][ T72] ipv6_find_idev+0x102/0x170 [ 2202.847737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.847737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.847737][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.847737][ T72] netlink_unicast+0x449/0x710 [ 2202.847737][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.847737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.847737][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.847737][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.847737][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.847737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.847737][ T72] [ 2202.849507][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2202.849507][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.849507][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.849507][ T72] ipv6_find_idev+0x102/0x170 [ 2202.849507][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.849507][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.849507][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.849507][ T72] netlink_unicast+0x449/0x710 [ 2202.849507][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.849507][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.849507][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.849507][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.849507][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.849507][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.849507][ T72] [ 2202.851345][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2202.851626][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2202.851626][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.851626][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.851626][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.851626][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.851626][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.851626][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.851626][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.851626][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.851626][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.851626][ T72] netlink_unicast+0x449/0x710 [ 2202.851626][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.851626][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.851626][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.851626][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.851626][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.851626][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.851626][ T72] [ 2202.853747][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2202.853747][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.853747][ T72] ipv6_find_idev+0x102/0x170 [ 2202.853747][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.853747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.853747][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.853747][ T72] netlink_unicast+0x449/0x710 [ 2202.853747][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.853747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.853747][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.853747][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.853747][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.853747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.853747][ T72] [ 2202.855415][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2202.855415][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.855415][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.855415][ T72] ipv6_find_idev+0x102/0x170 [ 2202.855415][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.855415][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.855415][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.855415][ T72] netlink_unicast+0x449/0x710 [ 2202.855415][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.855415][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.855415][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.855415][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.855415][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.855415][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.855415][ T72] [ 2202.857327][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2202.857651][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2202.857651][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.857651][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.857651][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.857651][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.857651][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.857651][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.857651][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.857651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.857651][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.857651][ T72] netlink_unicast+0x449/0x710 [ 2202.857651][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.857651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.857651][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.857651][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.857651][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.857651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.857651][ T72] [ 2202.859971][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2202.859971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.859971][ T72] ipv6_find_idev+0x102/0x170 [ 2202.859971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.859971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.859971][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.859971][ T72] netlink_unicast+0x449/0x710 [ 2202.859971][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.859971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.859971][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.859971][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.859971][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.859971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.859971][ T72] [ 2202.861683][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2202.861683][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.861683][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.861683][ T72] ipv6_find_idev+0x102/0x170 [ 2202.861683][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.861683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.861683][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.861683][ T72] netlink_unicast+0x449/0x710 [ 2202.861683][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.861683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.861683][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.861683][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.861683][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.861683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.861683][ T72] [ 2202.864058][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2202.864392][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2202.864392][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.864392][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.864392][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.864392][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.864392][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.864392][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.864392][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.864392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.864392][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.864392][ T72] netlink_unicast+0x449/0x710 [ 2202.864392][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.864392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.864392][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.864392][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.864392][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.864392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.864392][ T72] [ 2202.866663][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2202.866663][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.866663][ T72] ipv6_find_idev+0x102/0x170 [ 2202.866663][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.866663][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.866663][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.866663][ T72] netlink_unicast+0x449/0x710 [ 2202.866663][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.866663][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.866663][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.866663][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.866663][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.866663][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.866663][ T72] [ 2202.868411][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2202.868411][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.868411][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.868411][ T72] ipv6_find_idev+0x102/0x170 [ 2202.868411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.868411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.868411][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.868411][ T72] netlink_unicast+0x449/0x710 [ 2202.868411][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.868411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.868411][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.868411][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.868411][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.868411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.868411][ T72] [ 2202.870391][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2202.870705][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2202.870705][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.870705][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.870705][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.870705][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.870705][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.870705][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.870705][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.870705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.870705][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.870705][ T72] netlink_unicast+0x449/0x710 [ 2202.870705][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.870705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.870705][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.870705][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.870705][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.870705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.870705][ T72] [ 2202.873138][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2202.873138][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.873138][ T72] ipv6_find_idev+0x102/0x170 [ 2202.873138][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.873138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.873138][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.873138][ T72] netlink_unicast+0x449/0x710 [ 2202.873138][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.873138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.873138][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.873138][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.873138][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.873138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.873138][ T72] [ 2202.875053][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2202.875053][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.875053][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.875053][ T72] ipv6_find_idev+0x102/0x170 [ 2202.875053][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.875053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.875053][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.875053][ T72] netlink_unicast+0x449/0x710 [ 2202.875053][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.875053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.875053][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.875053][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.875053][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.875053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.875053][ T72] [ 2202.877077][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2202.877355][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2202.877355][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.877355][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.877355][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.877355][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.877355][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.877355][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.877355][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.877355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.877355][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.877355][ T72] netlink_unicast+0x449/0x710 [ 2202.877355][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.877355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.877355][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.877355][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.877355][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.877355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.877355][ T72] [ 2202.879829][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2202.879829][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.879829][ T72] ipv6_find_idev+0x102/0x170 [ 2202.879829][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.879829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.879829][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.879829][ T72] netlink_unicast+0x449/0x710 [ 2202.879829][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.879829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.879829][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.879829][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.879829][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.879829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.879829][ T72] [ 2202.881797][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2202.881797][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.881797][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.881797][ T72] ipv6_find_idev+0x102/0x170 [ 2202.881797][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.881797][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.881797][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.881797][ T72] netlink_unicast+0x449/0x710 [ 2202.881797][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.881797][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.881797][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.881797][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.881797][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.881797][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.881797][ T72] [ 2202.883973][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2202.884266][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2202.884266][ T72] netdev_get_by_index+0x5e/0x80 [ 2202.884266][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2202.884266][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2202.884266][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2202.884266][ T72] ipv6_add_addr+0x411/0x2000 [ 2202.884266][ T72] inet6_addr_add+0x30e/0xa40 [ 2202.884266][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2202.884266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.884266][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.884266][ T72] netlink_unicast+0x449/0x710 [ 2202.884266][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.884266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.884266][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.884266][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.884266][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.884266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.884266][ T72] [ 2202.886859][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2202.886859][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2202.886859][ T72] ipv6_find_idev+0x102/0x170 [ 2202.886859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.886859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.886859][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.886859][ T72] netlink_unicast+0x449/0x710 [ 2202.886859][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.886859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.886859][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.886859][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.886859][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.886859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.886859][ T72] [ 2202.888724][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2202.888724][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2202.888724][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2202.888724][ T72] ipv6_find_idev+0x102/0x170 [ 2202.888724][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2202.888724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2202.888724][ T72] netlink_rcv_skb+0x130/0x360 [ 2202.888724][ T72] netlink_unicast+0x449/0x710 [ 2202.888724][ T72] netlink_sendmsg+0x723/0xbe0 [ 2202.888724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2202.888724][ T72] ___sys_sendmsg+0xee/0x170 [ 2202.888724][ T72] __sys_sendmsg+0xcd/0x170 [ 2202.888724][ T72] do_syscall_64+0xc6/0x1e0 [ 2202.888724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2202.888724][ T72] [ 2213.126803][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2213.127225][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2213.127225][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.127225][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.127225][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.127225][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.127225][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.127225][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.127225][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.127225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.127225][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.127225][ T72] netlink_unicast+0x449/0x710 [ 2213.127225][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.127225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.127225][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.127225][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.127225][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.127225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.127225][ T72] [ 2213.129263][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2213.129263][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.129263][ T72] ipv6_find_idev+0x102/0x170 [ 2213.129263][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.129263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.129263][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.129263][ T72] netlink_unicast+0x449/0x710 [ 2213.129263][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.129263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.129263][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.129263][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.129263][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.129263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.129263][ T72] [ 2213.130813][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2213.130813][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.130813][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.130813][ T72] ipv6_find_idev+0x102/0x170 [ 2213.130813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.130813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.130813][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.130813][ T72] netlink_unicast+0x449/0x710 [ 2213.130813][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.130813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.130813][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.130813][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.130813][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.130813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.130813][ T72] [ 2213.132515][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2213.132859][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2213.132859][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.132859][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.132859][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.132859][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.132859][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.132859][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.132859][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.132859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.132859][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.132859][ T72] netlink_unicast+0x449/0x710 [ 2213.132859][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.132859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.132859][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.132859][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.132859][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.132859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.132859][ T72] [ 2213.135045][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2213.135045][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.135045][ T72] ipv6_find_idev+0x102/0x170 [ 2213.135045][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.135045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.135045][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.135045][ T72] netlink_unicast+0x449/0x710 [ 2213.135045][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.135045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.135045][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.135045][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.135045][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.135045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.135045][ T72] [ 2213.136723][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2213.136723][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.136723][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.136723][ T72] ipv6_find_idev+0x102/0x170 [ 2213.136723][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.136723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.136723][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.136723][ T72] netlink_unicast+0x449/0x710 [ 2213.136723][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.136723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.136723][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.136723][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.136723][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.136723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.136723][ T72] [ 2213.138547][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2213.138840][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2213.138840][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.138840][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.138840][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.138840][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.138840][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.138840][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.138840][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.138840][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.138840][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.138840][ T72] netlink_unicast+0x449/0x710 [ 2213.138840][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.138840][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.138840][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.138840][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.138840][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.138840][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.138840][ T72] [ 2213.141004][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2213.141004][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.141004][ T72] ipv6_find_idev+0x102/0x170 [ 2213.141004][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.141004][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.141004][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.141004][ T72] netlink_unicast+0x449/0x710 [ 2213.141004][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.141004][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.141004][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.141004][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.141004][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.141004][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.141004][ T72] [ 2213.142657][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2213.142657][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.142657][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.142657][ T72] ipv6_find_idev+0x102/0x170 [ 2213.142657][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.142657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.142657][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.142657][ T72] netlink_unicast+0x449/0x710 [ 2213.142657][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.142657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.142657][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.142657][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.142657][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.142657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.142657][ T72] [ 2213.144493][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2213.145193][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2213.145193][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.145193][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.145193][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.145193][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.145193][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.145193][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.145193][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.145193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.145193][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.145193][ T72] netlink_unicast+0x449/0x710 [ 2213.145193][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.145193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.145193][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.145193][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.145193][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.145193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.145193][ T72] [ 2213.147354][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2213.147354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.147354][ T72] ipv6_find_idev+0x102/0x170 [ 2213.147354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.147354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.147354][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.147354][ T72] netlink_unicast+0x449/0x710 [ 2213.147354][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.147354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.147354][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.147354][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.147354][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.147354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.147354][ T72] [ 2213.149034][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2213.149034][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.149034][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.149034][ T72] ipv6_find_idev+0x102/0x170 [ 2213.149034][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.149034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.149034][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.149034][ T72] netlink_unicast+0x449/0x710 [ 2213.149034][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.149034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.149034][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.149034][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.149034][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.149034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.149034][ T72] [ 2213.150933][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2213.151265][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2213.151265][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.151265][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.151265][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.151265][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.151265][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.151265][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.151265][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.151265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.151265][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.151265][ T72] netlink_unicast+0x449/0x710 [ 2213.151265][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.151265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.151265][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.151265][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.151265][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.151265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.151265][ T72] [ 2213.153444][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2213.153444][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.153444][ T72] ipv6_find_idev+0x102/0x170 [ 2213.153444][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.153444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.153444][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.153444][ T72] netlink_unicast+0x449/0x710 [ 2213.153444][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.153444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.153444][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.153444][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.153444][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.153444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.153444][ T72] [ 2213.155144][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2213.155144][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.155144][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.155144][ T72] ipv6_find_idev+0x102/0x170 [ 2213.155144][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.155144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.155144][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.155144][ T72] netlink_unicast+0x449/0x710 [ 2213.155144][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.155144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.155144][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.155144][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.155144][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.155144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.155144][ T72] [ 2213.157009][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2213.157343][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2213.157343][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.157343][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.157343][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.157343][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.157343][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.157343][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.157343][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.157343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.157343][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.157343][ T72] netlink_unicast+0x449/0x710 [ 2213.157343][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.157343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.157343][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.157343][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.157343][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.157343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.157343][ T72] [ 2213.159444][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2213.159444][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.159444][ T72] ipv6_find_idev+0x102/0x170 [ 2213.159444][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.159444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.159444][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.159444][ T72] netlink_unicast+0x449/0x710 [ 2213.159444][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.159444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.159444][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.159444][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.159444][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.159444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.159444][ T72] [ 2213.161126][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2213.161126][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.161126][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.161126][ T72] ipv6_find_idev+0x102/0x170 [ 2213.161126][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.161126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.161126][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.161126][ T72] netlink_unicast+0x449/0x710 [ 2213.161126][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.161126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.161126][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.161126][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.161126][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.161126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.161126][ T72] [ 2213.162979][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2213.163312][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2213.163312][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.163312][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.163312][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.163312][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.163312][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.163312][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.163312][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.163312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.163312][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.163312][ T72] netlink_unicast+0x449/0x710 [ 2213.163312][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.163312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.163312][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.163312][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.163312][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.163312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.163312][ T72] [ 2213.165419][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2213.165419][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.165419][ T72] ipv6_find_idev+0x102/0x170 [ 2213.165419][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.165419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.165419][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.165419][ T72] netlink_unicast+0x449/0x710 [ 2213.165419][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.165419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.165419][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.165419][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.165419][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.165419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.165419][ T72] [ 2213.167166][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2213.167166][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.167166][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.167166][ T72] ipv6_find_idev+0x102/0x170 [ 2213.167166][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.167166][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.167166][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.167166][ T72] netlink_unicast+0x449/0x710 [ 2213.167166][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.167166][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.167166][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.167166][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.167166][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.167166][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.167166][ T72] [ 2213.168971][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2213.169285][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2213.169285][ T72] netdev_get_by_index+0x5e/0x80 [ 2213.169285][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2213.169285][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2213.169285][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2213.169285][ T72] ipv6_add_addr+0x411/0x2000 [ 2213.169285][ T72] inet6_addr_add+0x30e/0xa40 [ 2213.169285][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2213.169285][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.169285][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.169285][ T72] netlink_unicast+0x449/0x710 [ 2213.169285][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.169285][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.169285][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.169285][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.169285][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.169285][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.169285][ T72] [ 2213.171472][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2213.171472][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2213.171472][ T72] ipv6_find_idev+0x102/0x170 [ 2213.171472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.171472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.171472][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.171472][ T72] netlink_unicast+0x449/0x710 [ 2213.171472][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.171472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.171472][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.171472][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.171472][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.171472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.171472][ T72] [ 2213.173250][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2213.173250][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2213.173250][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2213.173250][ T72] ipv6_find_idev+0x102/0x170 [ 2213.173250][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2213.173250][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2213.173250][ T72] netlink_rcv_skb+0x130/0x360 [ 2213.173250][ T72] netlink_unicast+0x449/0x710 [ 2213.173250][ T72] netlink_sendmsg+0x723/0xbe0 [ 2213.173250][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2213.173250][ T72] ___sys_sendmsg+0xee/0x170 [ 2213.173250][ T72] __sys_sendmsg+0xcd/0x170 [ 2213.173250][ T72] do_syscall_64+0xc6/0x1e0 [ 2213.173250][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2213.173250][ T72] [ 2223.414878][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2223.415371][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2223.415371][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.415371][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.415371][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.415371][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.415371][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.415371][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.415371][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.415371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.415371][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.415371][ T72] netlink_unicast+0x449/0x710 [ 2223.415371][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.415371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.415371][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.415371][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.415371][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.415371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.415371][ T72] [ 2223.417388][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2223.417388][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.417388][ T72] ipv6_find_idev+0x102/0x170 [ 2223.417388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.417388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.417388][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.417388][ T72] netlink_unicast+0x449/0x710 [ 2223.417388][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.417388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.417388][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.417388][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.417388][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.417388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.417388][ T72] [ 2223.418926][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2223.418926][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.418926][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.418926][ T72] ipv6_find_idev+0x102/0x170 [ 2223.418926][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.418926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.418926][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.418926][ T72] netlink_unicast+0x449/0x710 [ 2223.418926][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.418926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.418926][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.418926][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.418926][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.418926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.418926][ T72] [ 2223.420657][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2223.420943][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2223.420943][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.420943][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.420943][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.420943][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.420943][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.420943][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.420943][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.420943][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.420943][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.420943][ T72] netlink_unicast+0x449/0x710 [ 2223.420943][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.420943][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.420943][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.420943][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.420943][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.420943][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.420943][ T72] [ 2223.422936][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2223.422936][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.422936][ T72] ipv6_find_idev+0x102/0x170 [ 2223.422936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.422936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.422936][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.422936][ T72] netlink_unicast+0x449/0x710 [ 2223.422936][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.422936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.422936][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.422936][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.422936][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.422936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.422936][ T72] [ 2223.424471][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2223.424471][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.424471][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.424471][ T72] ipv6_find_idev+0x102/0x170 [ 2223.424471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.424471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.424471][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.424471][ T72] netlink_unicast+0x449/0x710 [ 2223.424471][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.424471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.424471][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.424471][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.424471][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.424471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.424471][ T72] [ 2223.426149][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2223.426416][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2223.426416][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.426416][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.426416][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.426416][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.426416][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.426416][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.426416][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.426416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.426416][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.426416][ T72] netlink_unicast+0x449/0x710 [ 2223.426416][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.426416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.426416][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.426416][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.426416][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.426416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.426416][ T72] [ 2223.428523][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2223.428523][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.428523][ T72] ipv6_find_idev+0x102/0x170 [ 2223.428523][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.428523][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.428523][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.428523][ T72] netlink_unicast+0x449/0x710 [ 2223.428523][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.428523][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.428523][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.428523][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.428523][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.428523][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.428523][ T72] [ 2223.430058][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2223.430058][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.430058][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.430058][ T72] ipv6_find_idev+0x102/0x170 [ 2223.430058][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.430058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.430058][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.430058][ T72] netlink_unicast+0x449/0x710 [ 2223.430058][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.430058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.430058][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.430058][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.430058][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.430058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.430058][ T72] [ 2223.431751][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2223.432022][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2223.432022][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.432022][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.432022][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.432022][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.432022][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.432022][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.432022][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.432022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.432022][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.432022][ T72] netlink_unicast+0x449/0x710 [ 2223.432022][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.432022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.432022][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.432022][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.432022][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.432022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.432022][ T72] [ 2223.434022][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2223.434022][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.434022][ T72] ipv6_find_idev+0x102/0x170 [ 2223.434022][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.434022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.434022][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.434022][ T72] netlink_unicast+0x449/0x710 [ 2223.434022][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.434022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.434022][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.434022][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.434022][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.434022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.434022][ T72] [ 2223.435572][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2223.435572][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.435572][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.435572][ T72] ipv6_find_idev+0x102/0x170 [ 2223.435572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.435572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.435572][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.435572][ T72] netlink_unicast+0x449/0x710 [ 2223.435572][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.435572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.435572][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.435572][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.435572][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.435572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.435572][ T72] [ 2223.437640][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2223.438241][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2223.438241][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.438241][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.438241][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.438241][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.438241][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.438241][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.438241][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.438241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.438241][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.438241][ T72] netlink_unicast+0x449/0x710 [ 2223.438241][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.438241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.438241][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.438241][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.438241][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.438241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.438241][ T72] [ 2223.440224][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2223.440224][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.440224][ T72] ipv6_find_idev+0x102/0x170 [ 2223.440224][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.440224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.440224][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.440224][ T72] netlink_unicast+0x449/0x710 [ 2223.440224][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.440224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.440224][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.440224][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.440224][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.440224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.440224][ T72] [ 2223.441760][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2223.441760][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.441760][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.441760][ T72] ipv6_find_idev+0x102/0x170 [ 2223.441760][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.441760][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.441760][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.441760][ T72] netlink_unicast+0x449/0x710 [ 2223.441760][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.441760][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.441760][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.441760][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.441760][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.441760][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.441760][ T72] [ 2223.443442][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2223.443715][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2223.443715][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.443715][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.443715][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.443715][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.443715][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.443715][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.443715][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.443715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.443715][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.443715][ T72] netlink_unicast+0x449/0x710 [ 2223.443715][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.443715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.443715][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.443715][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.443715][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.443715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.443715][ T72] [ 2223.445711][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2223.445711][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.445711][ T72] ipv6_find_idev+0x102/0x170 [ 2223.445711][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.445711][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.445711][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.445711][ T72] netlink_unicast+0x449/0x710 [ 2223.445711][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.445711][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.445711][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.445711][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.445711][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.445711][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.445711][ T72] [ 2223.447320][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2223.447320][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.447320][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.447320][ T72] ipv6_find_idev+0x102/0x170 [ 2223.447320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.447320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.447320][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.447320][ T72] netlink_unicast+0x449/0x710 [ 2223.447320][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.447320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.447320][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.447320][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.447320][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.447320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.447320][ T72] [ 2223.449279][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2223.449586][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2223.449586][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.449586][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.449586][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.449586][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.449586][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.449586][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.449586][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.449586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.449586][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.449586][ T72] netlink_unicast+0x449/0x710 [ 2223.449586][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.449586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.449586][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.449586][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.449586][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.449586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.449586][ T72] [ 2223.451866][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2223.451866][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.451866][ T72] ipv6_find_idev+0x102/0x170 [ 2223.451866][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.451866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.451866][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.451866][ T72] netlink_unicast+0x449/0x710 [ 2223.451866][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.451866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.451866][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.451866][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.451866][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.451866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.451866][ T72] [ 2223.453582][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2223.453582][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.453582][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.453582][ T72] ipv6_find_idev+0x102/0x170 [ 2223.453582][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.453582][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.453582][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.453582][ T72] netlink_unicast+0x449/0x710 [ 2223.453582][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.453582][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.453582][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.453582][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.453582][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.453582][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.453582][ T72] [ 2223.455490][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2223.455824][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2223.455824][ T72] netdev_get_by_index+0x5e/0x80 [ 2223.455824][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2223.455824][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2223.455824][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2223.455824][ T72] ipv6_add_addr+0x411/0x2000 [ 2223.455824][ T72] inet6_addr_add+0x30e/0xa40 [ 2223.455824][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2223.455824][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.455824][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.455824][ T72] netlink_unicast+0x449/0x710 [ 2223.455824][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.455824][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.455824][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.455824][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.455824][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.455824][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.455824][ T72] [ 2223.458180][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2223.458180][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2223.458180][ T72] ipv6_find_idev+0x102/0x170 [ 2223.458180][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.458180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.458180][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.458180][ T72] netlink_unicast+0x449/0x710 [ 2223.458180][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.458180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.458180][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.458180][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.458180][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.458180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.458180][ T72] [ 2223.460003][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2223.460003][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2223.460003][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2223.460003][ T72] ipv6_find_idev+0x102/0x170 [ 2223.460003][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2223.460003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2223.460003][ T72] netlink_rcv_skb+0x130/0x360 [ 2223.460003][ T72] netlink_unicast+0x449/0x710 [ 2223.460003][ T72] netlink_sendmsg+0x723/0xbe0 [ 2223.460003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2223.460003][ T72] ___sys_sendmsg+0xee/0x170 [ 2223.460003][ T72] __sys_sendmsg+0xcd/0x170 [ 2223.460003][ T72] do_syscall_64+0xc6/0x1e0 [ 2223.460003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2223.460003][ T72] [ 2233.702931][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2233.703349][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2233.703349][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.703349][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.703349][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.703349][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.703349][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.703349][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.703349][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.703349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.703349][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.703349][ T72] netlink_unicast+0x449/0x710 [ 2233.703349][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.703349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.703349][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.703349][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.703349][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.703349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.703349][ T72] [ 2233.705348][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2233.705348][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.705348][ T72] ipv6_find_idev+0x102/0x170 [ 2233.705348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.705348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.705348][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.705348][ T72] netlink_unicast+0x449/0x710 [ 2233.705348][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.705348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.705348][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.705348][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.705348][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.705348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.705348][ T72] [ 2233.706874][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2233.706874][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.706874][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.706874][ T72] ipv6_find_idev+0x102/0x170 [ 2233.706874][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.706874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.706874][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.706874][ T72] netlink_unicast+0x449/0x710 [ 2233.706874][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.706874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.706874][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.706874][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.706874][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.706874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.706874][ T72] [ 2233.708557][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2233.708843][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2233.708843][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.708843][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.708843][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.708843][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.708843][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.708843][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.708843][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.708843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.708843][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.708843][ T72] netlink_unicast+0x449/0x710 [ 2233.708843][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.708843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.708843][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.708843][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.708843][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.708843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.708843][ T72] [ 2233.710810][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2233.710810][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.710810][ T72] ipv6_find_idev+0x102/0x170 [ 2233.710810][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.710810][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.710810][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.710810][ T72] netlink_unicast+0x449/0x710 [ 2233.710810][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.710810][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.710810][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.710810][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.710810][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.710810][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.710810][ T72] [ 2233.712338][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2233.712338][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.712338][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.712338][ T72] ipv6_find_idev+0x102/0x170 [ 2233.712338][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.712338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.712338][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.712338][ T72] netlink_unicast+0x449/0x710 [ 2233.712338][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.712338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.712338][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.712338][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.712338][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.712338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.712338][ T72] [ 2233.714002][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2233.714275][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2233.714275][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.714275][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.714275][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.714275][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.714275][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.714275][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.714275][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.714275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.714275][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.714275][ T72] netlink_unicast+0x449/0x710 [ 2233.714275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.714275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.714275][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.714275][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.714275][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.714275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.714275][ T72] [ 2233.716242][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2233.716242][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.716242][ T72] ipv6_find_idev+0x102/0x170 [ 2233.716242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.716242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.716242][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.716242][ T72] netlink_unicast+0x449/0x710 [ 2233.716242][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.716242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.716242][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.716242][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.716242][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.716242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.716242][ T72] [ 2233.717757][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2233.717757][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.717757][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.717757][ T72] ipv6_find_idev+0x102/0x170 [ 2233.717757][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.717757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.717757][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.717757][ T72] netlink_unicast+0x449/0x710 [ 2233.717757][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.717757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.717757][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.717757][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.717757][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.717757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.717757][ T72] [ 2233.719414][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2233.719674][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2233.719674][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.719674][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.719674][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.719674][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.719674][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.719674][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.719674][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.719674][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.719674][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.719674][ T72] netlink_unicast+0x449/0x710 [ 2233.719674][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.719674][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.719674][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.719674][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.719674][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.719674][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.719674][ T72] [ 2233.721664][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2233.721664][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.721664][ T72] ipv6_find_idev+0x102/0x170 [ 2233.721664][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.721664][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.721664][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.721664][ T72] netlink_unicast+0x449/0x710 [ 2233.721664][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.721664][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.721664][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.721664][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.721664][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.721664][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.721664][ T72] [ 2233.723179][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2233.723179][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.723179][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.723179][ T72] ipv6_find_idev+0x102/0x170 [ 2233.723179][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.723179][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.723179][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.723179][ T72] netlink_unicast+0x449/0x710 [ 2233.723179][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.723179][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.723179][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.723179][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.723179][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.723179][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.723179][ T72] [ 2233.725226][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2233.725486][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2233.725486][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.725486][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.725486][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.725486][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.725486][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.725486][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.725486][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.725486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.725486][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.725486][ T72] netlink_unicast+0x449/0x710 [ 2233.725486][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.725486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.725486][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.725486][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.725486][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.725486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.725486][ T72] [ 2233.727435][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2233.727435][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.727435][ T72] ipv6_find_idev+0x102/0x170 [ 2233.727435][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.727435][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.727435][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.727435][ T72] netlink_unicast+0x449/0x710 [ 2233.727435][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.727435][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.727435][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.727435][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.727435][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.727435][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.727435][ T72] [ 2233.728941][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2233.728941][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.728941][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.728941][ T72] ipv6_find_idev+0x102/0x170 [ 2233.728941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.728941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.728941][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.728941][ T72] netlink_unicast+0x449/0x710 [ 2233.728941][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.728941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.728941][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.728941][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.728941][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.728941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.728941][ T72] [ 2233.730655][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2233.730981][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2233.730981][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.730981][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.730981][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.730981][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.730981][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.730981][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.730981][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.730981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.730981][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.730981][ T72] netlink_unicast+0x449/0x710 [ 2233.730981][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.730981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.730981][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.730981][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.730981][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.730981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.730981][ T72] [ 2233.733067][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2233.733067][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.733067][ T72] ipv6_find_idev+0x102/0x170 [ 2233.733067][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.733067][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.733067][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.733067][ T72] netlink_unicast+0x449/0x710 [ 2233.733067][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.733067][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.733067][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.733067][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.733067][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.733067][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.733067][ T72] [ 2233.734807][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2233.734807][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.734807][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.734807][ T72] ipv6_find_idev+0x102/0x170 [ 2233.734807][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.734807][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.734807][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.734807][ T72] netlink_unicast+0x449/0x710 [ 2233.734807][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.734807][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.734807][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.734807][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.734807][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.734807][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.734807][ T72] [ 2233.736668][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2233.736980][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2233.736980][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.736980][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.736980][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.736980][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.736980][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.736980][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.736980][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.736980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.736980][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.736980][ T72] netlink_unicast+0x449/0x710 [ 2233.736980][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.736980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.736980][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.736980][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.736980][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.736980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.736980][ T72] [ 2233.739121][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2233.739121][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.739121][ T72] ipv6_find_idev+0x102/0x170 [ 2233.739121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.739121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.739121][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.739121][ T72] netlink_unicast+0x449/0x710 [ 2233.739121][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.739121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.739121][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.739121][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.739121][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.739121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.739121][ T72] [ 2233.740811][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2233.740811][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.740811][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.740811][ T72] ipv6_find_idev+0x102/0x170 [ 2233.740811][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.740811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.740811][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.740811][ T72] netlink_unicast+0x449/0x710 [ 2233.740811][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.740811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.740811][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.740811][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.740811][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.740811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.740811][ T72] [ 2233.742682][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2233.742991][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2233.742991][ T72] netdev_get_by_index+0x5e/0x80 [ 2233.742991][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2233.742991][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2233.742991][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2233.742991][ T72] ipv6_add_addr+0x411/0x2000 [ 2233.742991][ T72] inet6_addr_add+0x30e/0xa40 [ 2233.742991][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2233.742991][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.742991][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.742991][ T72] netlink_unicast+0x449/0x710 [ 2233.742991][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.742991][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.742991][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.742991][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.742991][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.742991][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.742991][ T72] [ 2233.745193][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2233.745193][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2233.745193][ T72] ipv6_find_idev+0x102/0x170 [ 2233.745193][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.745193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.745193][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.745193][ T72] netlink_unicast+0x449/0x710 [ 2233.745193][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.745193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.745193][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.745193][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.745193][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.745193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.745193][ T72] [ 2233.746889][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2233.746889][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2233.746889][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2233.746889][ T72] ipv6_find_idev+0x102/0x170 [ 2233.746889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2233.746889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2233.746889][ T72] netlink_rcv_skb+0x130/0x360 [ 2233.746889][ T72] netlink_unicast+0x449/0x710 [ 2233.746889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2233.746889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2233.746889][ T72] ___sys_sendmsg+0xee/0x170 [ 2233.746889][ T72] __sys_sendmsg+0xcd/0x170 [ 2233.746889][ T72] do_syscall_64+0xc6/0x1e0 [ 2233.746889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2233.746889][ T72] [ 2243.822851][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2243.823325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2243.823325][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.823325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.823325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.823325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.823325][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.823325][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.823325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.823325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.823325][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.823325][ T72] netlink_unicast+0x449/0x710 [ 2243.823325][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.823325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.823325][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.823325][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.823325][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.823325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.823325][ T72] [ 2243.825317][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2243.825317][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.825317][ T72] ipv6_find_idev+0x102/0x170 [ 2243.825317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.825317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.825317][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.825317][ T72] netlink_unicast+0x449/0x710 [ 2243.825317][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.825317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.825317][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.825317][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.825317][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.825317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.825317][ T72] [ 2243.826834][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2243.826834][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.826834][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.826834][ T72] ipv6_find_idev+0x102/0x170 [ 2243.826834][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.826834][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.826834][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.826834][ T72] netlink_unicast+0x449/0x710 [ 2243.826834][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.826834][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.826834][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.826834][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.826834][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.826834][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.826834][ T72] [ 2243.828499][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2243.828764][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2243.828764][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.828764][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.828764][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.828764][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.828764][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.828764][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.828764][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.828764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.828764][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.828764][ T72] netlink_unicast+0x449/0x710 [ 2243.828764][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.828764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.828764][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.828764][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.828764][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.828764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.828764][ T72] [ 2243.830742][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2243.830742][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.830742][ T72] ipv6_find_idev+0x102/0x170 [ 2243.830742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.830742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.830742][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.830742][ T72] netlink_unicast+0x449/0x710 [ 2243.830742][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.830742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.830742][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.830742][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.830742][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.830742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.830742][ T72] [ 2243.832262][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2243.832262][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.832262][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.832262][ T72] ipv6_find_idev+0x102/0x170 [ 2243.832262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.832262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.832262][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.832262][ T72] netlink_unicast+0x449/0x710 [ 2243.832262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.832262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.832262][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.832262][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.832262][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.832262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.832262][ T72] [ 2243.833907][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2243.834166][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2243.834166][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.834166][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.834166][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.834166][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.834166][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.834166][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.834166][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.834166][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.834166][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.834166][ T72] netlink_unicast+0x449/0x710 [ 2243.834166][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.834166][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.834166][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.834166][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.834166][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.834166][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.834166][ T72] [ 2243.836133][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2243.836133][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.836133][ T72] ipv6_find_idev+0x102/0x170 [ 2243.836133][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.836133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.836133][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.836133][ T72] netlink_unicast+0x449/0x710 [ 2243.836133][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.836133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.836133][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.836133][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.836133][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.836133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.836133][ T72] [ 2243.837689][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2243.837689][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.837689][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.837689][ T72] ipv6_find_idev+0x102/0x170 [ 2243.837689][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.837689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.837689][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.837689][ T72] netlink_unicast+0x449/0x710 [ 2243.837689][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.837689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.837689][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.837689][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.837689][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.837689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.837689][ T72] [ 2243.839500][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2243.839796][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2243.839796][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.839796][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.839796][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.839796][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.839796][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.839796][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.839796][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.839796][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.839796][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.839796][ T72] netlink_unicast+0x449/0x710 [ 2243.839796][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.839796][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.839796][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.839796][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.839796][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.839796][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.839796][ T72] [ 2243.842536][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2243.842536][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.842536][ T72] ipv6_find_idev+0x102/0x170 [ 2243.842536][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.842536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.842536][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.842536][ T72] netlink_unicast+0x449/0x710 [ 2243.842536][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.842536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.842536][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.842536][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.842536][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.842536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.842536][ T72] [ 2243.844439][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2243.844439][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.844439][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.844439][ T72] ipv6_find_idev+0x102/0x170 [ 2243.844439][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.844439][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.844439][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.844439][ T72] netlink_unicast+0x449/0x710 [ 2243.844439][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.844439][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.844439][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.844439][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.844439][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.844439][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.844439][ T72] [ 2243.846125][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2243.846416][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2243.846416][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.846416][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.846416][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.846416][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.846416][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.846416][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.846416][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.846416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.846416][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.846416][ T72] netlink_unicast+0x449/0x710 [ 2243.846416][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.846416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.846416][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.846416][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.846416][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.846416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.846416][ T72] [ 2243.848539][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2243.848539][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.848539][ T72] ipv6_find_idev+0x102/0x170 [ 2243.848539][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.848539][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.848539][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.848539][ T72] netlink_unicast+0x449/0x710 [ 2243.848539][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.848539][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.848539][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.848539][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.848539][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.848539][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.848539][ T72] [ 2243.850226][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2243.850226][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.850226][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.850226][ T72] ipv6_find_idev+0x102/0x170 [ 2243.850226][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.850226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.850226][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.850226][ T72] netlink_unicast+0x449/0x710 [ 2243.850226][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.850226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.850226][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.850226][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.850226][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.850226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.850226][ T72] [ 2243.852207][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2243.852469][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2243.852469][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.852469][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.852469][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.852469][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.852469][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.852469][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.852469][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.852469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.852469][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.852469][ T72] netlink_unicast+0x449/0x710 [ 2243.852469][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.852469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.852469][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.852469][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.852469][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.852469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.852469][ T72] [ 2243.854665][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2243.854665][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.854665][ T72] ipv6_find_idev+0x102/0x170 [ 2243.854665][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.854665][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.854665][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.854665][ T72] netlink_unicast+0x449/0x710 [ 2243.854665][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.854665][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.854665][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.854665][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.854665][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.854665][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.854665][ T72] [ 2243.856450][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2243.856450][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.856450][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.856450][ T72] ipv6_find_idev+0x102/0x170 [ 2243.856450][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.856450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.856450][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.856450][ T72] netlink_unicast+0x449/0x710 [ 2243.856450][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.856450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.856450][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.856450][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.856450][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.856450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.856450][ T72] [ 2243.858455][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2243.858739][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2243.858739][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.858739][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.858739][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.858739][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.858739][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.858739][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.858739][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.858739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.858739][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.858739][ T72] netlink_unicast+0x449/0x710 [ 2243.858739][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.858739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.858739][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.858739][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.858739][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.858739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.858739][ T72] [ 2243.861151][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2243.861151][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.861151][ T72] ipv6_find_idev+0x102/0x170 [ 2243.861151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.861151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.861151][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.861151][ T72] netlink_unicast+0x449/0x710 [ 2243.861151][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.861151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.861151][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.861151][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.861151][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.861151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.861151][ T72] [ 2243.862962][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2243.862962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.862962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.862962][ T72] ipv6_find_idev+0x102/0x170 [ 2243.862962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.862962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.862962][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.862962][ T72] netlink_unicast+0x449/0x710 [ 2243.862962][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.862962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.862962][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.862962][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.862962][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.862962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.862962][ T72] [ 2243.865044][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2243.865320][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2243.865320][ T72] netdev_get_by_index+0x5e/0x80 [ 2243.865320][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2243.865320][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2243.865320][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2243.865320][ T72] ipv6_add_addr+0x411/0x2000 [ 2243.865320][ T72] inet6_addr_add+0x30e/0xa40 [ 2243.865320][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2243.865320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.865320][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.865320][ T72] netlink_unicast+0x449/0x710 [ 2243.865320][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.865320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.865320][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.865320][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.865320][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.865320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.865320][ T72] [ 2243.867669][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2243.867669][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2243.867669][ T72] ipv6_find_idev+0x102/0x170 [ 2243.867669][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.867669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.867669][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.867669][ T72] netlink_unicast+0x449/0x710 [ 2243.867669][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.867669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.867669][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.867669][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.867669][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.867669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.867669][ T72] [ 2243.869508][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2243.869508][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2243.869508][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2243.869508][ T72] ipv6_find_idev+0x102/0x170 [ 2243.869508][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2243.869508][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2243.869508][ T72] netlink_rcv_skb+0x130/0x360 [ 2243.869508][ T72] netlink_unicast+0x449/0x710 [ 2243.869508][ T72] netlink_sendmsg+0x723/0xbe0 [ 2243.869508][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2243.869508][ T72] ___sys_sendmsg+0xee/0x170 [ 2243.869508][ T72] __sys_sendmsg+0xcd/0x170 [ 2243.869508][ T72] do_syscall_64+0xc6/0x1e0 [ 2243.869508][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2243.869508][ T72] [ 2253.966821][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2253.967249][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2253.967249][ T72] netdev_get_by_index+0x5e/0x80 [ 2253.967249][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2253.967249][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2253.967249][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2253.967249][ T72] ipv6_add_addr+0x411/0x2000 [ 2253.967249][ T72] inet6_addr_add+0x30e/0xa40 [ 2253.967249][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2253.967249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.967249][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.967249][ T72] netlink_unicast+0x449/0x710 [ 2253.967249][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.967249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.967249][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.967249][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.967249][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.967249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.967249][ T72] [ 2253.969395][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2253.969395][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2253.969395][ T72] ipv6_find_idev+0x102/0x170 [ 2253.969395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.969395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.969395][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.969395][ T72] netlink_unicast+0x449/0x710 [ 2253.969395][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.969395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.969395][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.969395][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.969395][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.969395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.969395][ T72] [ 2253.971056][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2253.971056][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2253.971056][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2253.971056][ T72] ipv6_find_idev+0x102/0x170 [ 2253.971056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.971056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.971056][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.971056][ T72] netlink_unicast+0x449/0x710 [ 2253.971056][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.971056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.971056][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.971056][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.971056][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.971056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.971056][ T72] [ 2253.972876][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2253.973172][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2253.973172][ T72] netdev_get_by_index+0x5e/0x80 [ 2253.973172][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2253.973172][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2253.973172][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2253.973172][ T72] ipv6_add_addr+0x411/0x2000 [ 2253.973172][ T72] inet6_addr_add+0x30e/0xa40 [ 2253.973172][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2253.973172][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.973172][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.973172][ T72] netlink_unicast+0x449/0x710 [ 2253.973172][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.973172][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.973172][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.973172][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.973172][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.973172][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.973172][ T72] [ 2253.975319][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2253.975319][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2253.975319][ T72] ipv6_find_idev+0x102/0x170 [ 2253.975319][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.975319][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.975319][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.975319][ T72] netlink_unicast+0x449/0x710 [ 2253.975319][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.975319][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.975319][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.975319][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.975319][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.975319][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.975319][ T72] [ 2253.976976][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2253.976976][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2253.976976][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2253.976976][ T72] ipv6_find_idev+0x102/0x170 [ 2253.976976][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.976976][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.976976][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.976976][ T72] netlink_unicast+0x449/0x710 [ 2253.976976][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.976976][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.976976][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.976976][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.976976][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.976976][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.976976][ T72] [ 2253.978783][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2253.979064][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2253.979064][ T72] netdev_get_by_index+0x5e/0x80 [ 2253.979064][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2253.979064][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2253.979064][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2253.979064][ T72] ipv6_add_addr+0x411/0x2000 [ 2253.979064][ T72] inet6_addr_add+0x30e/0xa40 [ 2253.979064][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2253.979064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.979064][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.979064][ T72] netlink_unicast+0x449/0x710 [ 2253.979064][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.979064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.979064][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.979064][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.979064][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.979064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.979064][ T72] [ 2253.981223][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2253.981223][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2253.981223][ T72] ipv6_find_idev+0x102/0x170 [ 2253.981223][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.981223][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.981223][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.981223][ T72] netlink_unicast+0x449/0x710 [ 2253.981223][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.981223][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.981223][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.981223][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.981223][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.981223][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.981223][ T72] [ 2253.982772][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2253.982772][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2253.982772][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2253.982772][ T72] ipv6_find_idev+0x102/0x170 [ 2253.982772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.982772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.982772][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.982772][ T72] netlink_unicast+0x449/0x710 [ 2253.982772][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.982772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.982772][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.982772][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.982772][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.982772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.982772][ T72] [ 2253.984427][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2253.984687][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2253.984687][ T72] netdev_get_by_index+0x5e/0x80 [ 2253.984687][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2253.984687][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2253.984687][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2253.984687][ T72] ipv6_add_addr+0x411/0x2000 [ 2253.984687][ T72] inet6_addr_add+0x30e/0xa40 [ 2253.984687][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2253.984687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.984687][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.984687][ T72] netlink_unicast+0x449/0x710 [ 2253.984687][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.984687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.984687][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.984687][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.984687][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.984687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.984687][ T72] [ 2253.986657][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2253.986657][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2253.986657][ T72] ipv6_find_idev+0x102/0x170 [ 2253.986657][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.986657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.986657][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.986657][ T72] netlink_unicast+0x449/0x710 [ 2253.986657][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.986657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.986657][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.986657][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.986657][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.986657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.986657][ T72] [ 2253.988166][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2253.988166][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2253.988166][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2253.988166][ T72] ipv6_find_idev+0x102/0x170 [ 2253.988166][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.988166][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.988166][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.988166][ T72] netlink_unicast+0x449/0x710 [ 2253.988166][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.988166][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.988166][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.988166][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.988166][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.988166][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.988166][ T72] [ 2253.990364][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2253.990700][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2253.990700][ T72] netdev_get_by_index+0x5e/0x80 [ 2253.990700][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2253.990700][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2253.990700][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2253.990700][ T72] ipv6_add_addr+0x411/0x2000 [ 2253.990700][ T72] inet6_addr_add+0x30e/0xa40 [ 2253.990700][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2253.990700][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.990700][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.990700][ T72] netlink_unicast+0x449/0x710 [ 2253.990700][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.990700][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.990700][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.990700][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.990700][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.990700][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.990700][ T72] [ 2253.992842][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2253.992842][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2253.992842][ T72] ipv6_find_idev+0x102/0x170 [ 2253.992842][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.992842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.992842][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.992842][ T72] netlink_unicast+0x449/0x710 [ 2253.992842][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.992842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.992842][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.992842][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.992842][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.992842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.992842][ T72] [ 2253.994882][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2253.994882][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2253.994882][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2253.994882][ T72] ipv6_find_idev+0x102/0x170 [ 2253.994882][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.994882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.994882][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.994882][ T72] netlink_unicast+0x449/0x710 [ 2253.994882][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.994882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.994882][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.994882][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.994882][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.994882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.994882][ T72] [ 2253.996761][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2253.997048][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2253.997048][ T72] netdev_get_by_index+0x5e/0x80 [ 2253.997048][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2253.997048][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2253.997048][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2253.997048][ T72] ipv6_add_addr+0x411/0x2000 [ 2253.997048][ T72] inet6_addr_add+0x30e/0xa40 [ 2253.997048][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2253.997048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.997048][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.997048][ T72] netlink_unicast+0x449/0x710 [ 2253.997048][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.997048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.997048][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.997048][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.997048][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.997048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.997048][ T72] [ 2253.999262][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2253.999262][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2253.999262][ T72] ipv6_find_idev+0x102/0x170 [ 2253.999262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2253.999262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2253.999262][ T72] netlink_rcv_skb+0x130/0x360 [ 2253.999262][ T72] netlink_unicast+0x449/0x710 [ 2253.999262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2253.999262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2253.999262][ T72] ___sys_sendmsg+0xee/0x170 [ 2253.999262][ T72] __sys_sendmsg+0xcd/0x170 [ 2253.999262][ T72] do_syscall_64+0xc6/0x1e0 [ 2253.999262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2253.999262][ T72] [ 2254.001165][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2254.001165][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2254.001165][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2254.001165][ T72] ipv6_find_idev+0x102/0x170 [ 2254.001165][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2254.001165][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2254.001165][ T72] netlink_rcv_skb+0x130/0x360 [ 2254.001165][ T72] netlink_unicast+0x449/0x710 [ 2254.001165][ T72] netlink_sendmsg+0x723/0xbe0 [ 2254.001165][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2254.001165][ T72] ___sys_sendmsg+0xee/0x170 [ 2254.001165][ T72] __sys_sendmsg+0xcd/0x170 [ 2254.001165][ T72] do_syscall_64+0xc6/0x1e0 [ 2254.001165][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2254.001165][ T72] [ 2254.003241][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2254.003524][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2254.003524][ T72] netdev_get_by_index+0x5e/0x80 [ 2254.003524][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2254.003524][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2254.003524][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2254.003524][ T72] ipv6_add_addr+0x411/0x2000 [ 2254.003524][ T72] inet6_addr_add+0x30e/0xa40 [ 2254.003524][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2254.003524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2254.003524][ T72] netlink_rcv_skb+0x130/0x360 [ 2254.003524][ T72] netlink_unicast+0x449/0x710 [ 2254.003524][ T72] netlink_sendmsg+0x723/0xbe0 [ 2254.003524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2254.003524][ T72] ___sys_sendmsg+0xee/0x170 [ 2254.003524][ T72] __sys_sendmsg+0xcd/0x170 [ 2254.003524][ T72] do_syscall_64+0xc6/0x1e0 [ 2254.003524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2254.003524][ T72] [ 2254.005847][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2254.005847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2254.005847][ T72] ipv6_find_idev+0x102/0x170 [ 2254.005847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2254.005847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2254.005847][ T72] netlink_rcv_skb+0x130/0x360 [ 2254.005847][ T72] netlink_unicast+0x449/0x710 [ 2254.005847][ T72] netlink_sendmsg+0x723/0xbe0 [ 2254.005847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2254.005847][ T72] ___sys_sendmsg+0xee/0x170 [ 2254.005847][ T72] __sys_sendmsg+0xcd/0x170 [ 2254.005847][ T72] do_syscall_64+0xc6/0x1e0 [ 2254.005847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2254.005847][ T72] [ 2254.007602][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2254.007602][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2254.007602][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2254.007602][ T72] ipv6_find_idev+0x102/0x170 [ 2254.007602][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2254.007602][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2254.007602][ T72] netlink_rcv_skb+0x130/0x360 [ 2254.007602][ T72] netlink_unicast+0x449/0x710 [ 2254.007602][ T72] netlink_sendmsg+0x723/0xbe0 [ 2254.007602][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2254.007602][ T72] ___sys_sendmsg+0xee/0x170 [ 2254.007602][ T72] __sys_sendmsg+0xcd/0x170 [ 2254.007602][ T72] do_syscall_64+0xc6/0x1e0 [ 2254.007602][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2254.007602][ T72] [ 2254.009470][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2254.009729][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2254.009729][ T72] netdev_get_by_index+0x5e/0x80 [ 2254.009729][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2254.009729][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2254.009729][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2254.009729][ T72] ipv6_add_addr+0x411/0x2000 [ 2254.009729][ T72] inet6_addr_add+0x30e/0xa40 [ 2254.009729][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2254.009729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2254.009729][ T72] netlink_rcv_skb+0x130/0x360 [ 2254.009729][ T72] netlink_unicast+0x449/0x710 [ 2254.009729][ T72] netlink_sendmsg+0x723/0xbe0 [ 2254.009729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2254.009729][ T72] ___sys_sendmsg+0xee/0x170 [ 2254.009729][ T72] __sys_sendmsg+0xcd/0x170 [ 2254.009729][ T72] do_syscall_64+0xc6/0x1e0 [ 2254.009729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2254.009729][ T72] [ 2254.012005][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2254.012005][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2254.012005][ T72] ipv6_find_idev+0x102/0x170 [ 2254.012005][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2254.012005][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2254.012005][ T72] netlink_rcv_skb+0x130/0x360 [ 2254.012005][ T72] netlink_unicast+0x449/0x710 [ 2254.012005][ T72] netlink_sendmsg+0x723/0xbe0 [ 2254.012005][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2254.012005][ T72] ___sys_sendmsg+0xee/0x170 [ 2254.012005][ T72] __sys_sendmsg+0xcd/0x170 [ 2254.012005][ T72] do_syscall_64+0xc6/0x1e0 [ 2254.012005][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2254.012005][ T72] [ 2254.013689][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2254.013689][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2254.013689][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2254.013689][ T72] ipv6_find_idev+0x102/0x170 [ 2254.013689][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2254.013689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2254.013689][ T72] netlink_rcv_skb+0x130/0x360 [ 2254.013689][ T72] netlink_unicast+0x449/0x710 [ 2254.013689][ T72] netlink_sendmsg+0x723/0xbe0 [ 2254.013689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2254.013689][ T72] ___sys_sendmsg+0xee/0x170 [ 2254.013689][ T72] __sys_sendmsg+0xcd/0x170 [ 2254.013689][ T72] do_syscall_64+0xc6/0x1e0 [ 2254.013689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2254.013689][ T72] [ 2264.054914][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2264.055325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2264.055325][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.055325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.055325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.055325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.055325][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.055325][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.055325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.055325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.055325][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.055325][ T72] netlink_unicast+0x449/0x710 [ 2264.055325][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.055325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.055325][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.055325][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.055325][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.055325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.055325][ T72] [ 2264.057348][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2264.057348][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.057348][ T72] ipv6_find_idev+0x102/0x170 [ 2264.057348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.057348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.057348][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.057348][ T72] netlink_unicast+0x449/0x710 [ 2264.057348][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.057348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.057348][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.057348][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.057348][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.057348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.057348][ T72] [ 2264.058884][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2264.058884][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.058884][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.058884][ T72] ipv6_find_idev+0x102/0x170 [ 2264.058884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.058884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.058884][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.058884][ T72] netlink_unicast+0x449/0x710 [ 2264.058884][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.058884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.058884][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.058884][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.058884][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.058884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.058884][ T72] [ 2264.060564][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2264.060852][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2264.060852][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.060852][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.060852][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.060852][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.060852][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.060852][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.060852][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.060852][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.060852][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.060852][ T72] netlink_unicast+0x449/0x710 [ 2264.060852][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.060852][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.060852][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.060852][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.060852][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.060852][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.060852][ T72] [ 2264.062821][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2264.062821][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.062821][ T72] ipv6_find_idev+0x102/0x170 [ 2264.062821][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.062821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.062821][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.062821][ T72] netlink_unicast+0x449/0x710 [ 2264.062821][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.062821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.062821][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.062821][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.062821][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.062821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.062821][ T72] [ 2264.064342][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2264.064342][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.064342][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.064342][ T72] ipv6_find_idev+0x102/0x170 [ 2264.064342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.064342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.064342][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.064342][ T72] netlink_unicast+0x449/0x710 [ 2264.064342][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.064342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.064342][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.064342][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.064342][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.064342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.064342][ T72] [ 2264.066002][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2264.066263][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2264.066263][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.066263][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.066263][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.066263][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.066263][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.066263][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.066263][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.066263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.066263][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.066263][ T72] netlink_unicast+0x449/0x710 [ 2264.066263][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.066263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.066263][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.066263][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.066263][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.066263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.066263][ T72] [ 2264.068228][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2264.068228][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.068228][ T72] ipv6_find_idev+0x102/0x170 [ 2264.068228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.068228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.068228][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.068228][ T72] netlink_unicast+0x449/0x710 [ 2264.068228][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.068228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.068228][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.068228][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.068228][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.068228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.068228][ T72] [ 2264.069750][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2264.069750][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.069750][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.069750][ T72] ipv6_find_idev+0x102/0x170 [ 2264.069750][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.069750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.069750][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.069750][ T72] netlink_unicast+0x449/0x710 [ 2264.069750][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.069750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.069750][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.069750][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.069750][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.069750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.069750][ T72] [ 2264.071426][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2264.071682][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2264.071682][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.071682][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.071682][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.071682][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.071682][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.071682][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.071682][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.071682][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.071682][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.071682][ T72] netlink_unicast+0x449/0x710 [ 2264.071682][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.071682][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.071682][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.071682][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.071682][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.071682][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.071682][ T72] [ 2264.073657][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2264.073657][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.073657][ T72] ipv6_find_idev+0x102/0x170 [ 2264.073657][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.073657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.073657][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.073657][ T72] netlink_unicast+0x449/0x710 [ 2264.073657][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.073657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.073657][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.073657][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.073657][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.073657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.073657][ T72] [ 2264.075177][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2264.075177][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.075177][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.075177][ T72] ipv6_find_idev+0x102/0x170 [ 2264.075177][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.075177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.075177][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.075177][ T72] netlink_unicast+0x449/0x710 [ 2264.075177][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.075177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.075177][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.075177][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.075177][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.075177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.075177][ T72] [ 2264.077232][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2264.077489][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2264.077489][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.077489][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.077489][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.077489][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.077489][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.077489][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.077489][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.077489][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.077489][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.077489][ T72] netlink_unicast+0x449/0x710 [ 2264.077489][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.077489][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.077489][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.077489][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.077489][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.077489][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.077489][ T72] [ 2264.079467][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2264.079467][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.079467][ T72] ipv6_find_idev+0x102/0x170 [ 2264.079467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.079467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.079467][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.079467][ T72] netlink_unicast+0x449/0x710 [ 2264.079467][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.079467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.079467][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.079467][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.079467][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.079467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.079467][ T72] [ 2264.080986][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2264.080986][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.080986][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.080986][ T72] ipv6_find_idev+0x102/0x170 [ 2264.080986][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.080986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.080986][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.080986][ T72] netlink_unicast+0x449/0x710 [ 2264.080986][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.080986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.080986][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.080986][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.080986][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.080986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.080986][ T72] [ 2264.082698][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2264.083014][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2264.083014][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.083014][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.083014][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.083014][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.083014][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.083014][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.083014][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.083014][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.083014][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.083014][ T72] netlink_unicast+0x449/0x710 [ 2264.083014][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.083014][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.083014][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.083014][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.083014][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.083014][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.083014][ T72] [ 2264.085099][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2264.085099][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.085099][ T72] ipv6_find_idev+0x102/0x170 [ 2264.085099][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.085099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.085099][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.085099][ T72] netlink_unicast+0x449/0x710 [ 2264.085099][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.085099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.085099][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.085099][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.085099][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.085099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.085099][ T72] [ 2264.086851][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2264.086851][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.086851][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.086851][ T72] ipv6_find_idev+0x102/0x170 [ 2264.086851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.086851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.086851][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.086851][ T72] netlink_unicast+0x449/0x710 [ 2264.086851][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.086851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.086851][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.086851][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.086851][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.086851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.086851][ T72] [ 2264.088720][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2264.089032][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2264.089032][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.089032][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.089032][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.089032][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.089032][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.089032][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.089032][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.089032][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.089032][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.089032][ T72] netlink_unicast+0x449/0x710 [ 2264.089032][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.089032][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.089032][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.089032][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.089032][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.089032][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.089032][ T72] [ 2264.091173][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2264.091173][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.091173][ T72] ipv6_find_idev+0x102/0x170 [ 2264.091173][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.091173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.091173][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.091173][ T72] netlink_unicast+0x449/0x710 [ 2264.091173][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.091173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.091173][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.091173][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.091173][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.091173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.091173][ T72] [ 2264.092860][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2264.092860][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.092860][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.092860][ T72] ipv6_find_idev+0x102/0x170 [ 2264.092860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.092860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.092860][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.092860][ T72] netlink_unicast+0x449/0x710 [ 2264.092860][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.092860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.092860][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.092860][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.092860][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.092860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.092860][ T72] [ 2264.094728][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2264.095044][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2264.095044][ T72] netdev_get_by_index+0x5e/0x80 [ 2264.095044][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2264.095044][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2264.095044][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2264.095044][ T72] ipv6_add_addr+0x411/0x2000 [ 2264.095044][ T72] inet6_addr_add+0x30e/0xa40 [ 2264.095044][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2264.095044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.095044][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.095044][ T72] netlink_unicast+0x449/0x710 [ 2264.095044][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.095044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.095044][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.095044][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.095044][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.095044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.095044][ T72] [ 2264.097240][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2264.097240][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2264.097240][ T72] ipv6_find_idev+0x102/0x170 [ 2264.097240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.097240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.097240][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.097240][ T72] netlink_unicast+0x449/0x710 [ 2264.097240][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.097240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.097240][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.097240][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.097240][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.097240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.097240][ T72] [ 2264.098933][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2264.098933][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2264.098933][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2264.098933][ T72] ipv6_find_idev+0x102/0x170 [ 2264.098933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2264.098933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2264.098933][ T72] netlink_rcv_skb+0x130/0x360 [ 2264.098933][ T72] netlink_unicast+0x449/0x710 [ 2264.098933][ T72] netlink_sendmsg+0x723/0xbe0 [ 2264.098933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2264.098933][ T72] ___sys_sendmsg+0xee/0x170 [ 2264.098933][ T72] __sys_sendmsg+0xcd/0x170 [ 2264.098933][ T72] do_syscall_64+0xc6/0x1e0 [ 2264.098933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2264.098933][ T72] [ 2274.350817][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2274.351269][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2274.351269][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.351269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.351269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.351269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.351269][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.351269][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.351269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.351269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.351269][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.351269][ T72] netlink_unicast+0x449/0x710 [ 2274.351269][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.351269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.351269][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.351269][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.351269][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.351269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.351269][ T72] [ 2274.353467][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2274.353467][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.353467][ T72] ipv6_find_idev+0x102/0x170 [ 2274.353467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.353467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.353467][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.353467][ T72] netlink_unicast+0x449/0x710 [ 2274.353467][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.353467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.353467][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.353467][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.353467][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.353467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.353467][ T72] [ 2274.355143][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2274.355143][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.355143][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.355143][ T72] ipv6_find_idev+0x102/0x170 [ 2274.355143][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.355143][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.355143][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.355143][ T72] netlink_unicast+0x449/0x710 [ 2274.355143][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.355143][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.355143][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.355143][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.355143][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.355143][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.355143][ T72] [ 2274.357015][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2274.357310][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2274.357310][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.357310][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.357310][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.357310][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.357310][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.357310][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.357310][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.357310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.357310][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.357310][ T72] netlink_unicast+0x449/0x710 [ 2274.357310][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.357310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.357310][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.357310][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.357310][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.357310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.357310][ T72] [ 2274.359484][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2274.359484][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.359484][ T72] ipv6_find_idev+0x102/0x170 [ 2274.359484][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.359484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.359484][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.359484][ T72] netlink_unicast+0x449/0x710 [ 2274.359484][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.359484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.359484][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.359484][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.359484][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.359484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.359484][ T72] [ 2274.361186][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2274.361186][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.361186][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.361186][ T72] ipv6_find_idev+0x102/0x170 [ 2274.361186][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.361186][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.361186][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.361186][ T72] netlink_unicast+0x449/0x710 [ 2274.361186][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.361186][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.361186][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.361186][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.361186][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.361186][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.361186][ T72] [ 2274.363009][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2274.363297][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2274.363297][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.363297][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.363297][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.363297][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.363297][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.363297][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.363297][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.363297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.363297][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.363297][ T72] netlink_unicast+0x449/0x710 [ 2274.363297][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.363297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.363297][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.363297][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.363297][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.363297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.363297][ T72] [ 2274.365452][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2274.365452][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.365452][ T72] ipv6_find_idev+0x102/0x170 [ 2274.365452][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.365452][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.365452][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.365452][ T72] netlink_unicast+0x449/0x710 [ 2274.365452][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.365452][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.365452][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.365452][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.365452][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.365452][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.365452][ T72] [ 2274.367101][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2274.367101][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.367101][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.367101][ T72] ipv6_find_idev+0x102/0x170 [ 2274.367101][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.367101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.367101][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.367101][ T72] netlink_unicast+0x449/0x710 [ 2274.367101][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.367101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.367101][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.367101][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.367101][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.367101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.367101][ T72] [ 2274.368946][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2274.369235][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2274.369235][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.369235][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.369235][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.369235][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.369235][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.369235][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.369235][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.369235][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.369235][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.369235][ T72] netlink_unicast+0x449/0x710 [ 2274.369235][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.369235][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.369235][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.369235][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.369235][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.369235][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.369235][ T72] [ 2274.371414][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2274.371414][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.371414][ T72] ipv6_find_idev+0x102/0x170 [ 2274.371414][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.371414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.371414][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.371414][ T72] netlink_unicast+0x449/0x710 [ 2274.371414][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.371414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.371414][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.371414][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.371414][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.371414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.371414][ T72] [ 2274.373095][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2274.373095][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.373095][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.373095][ T72] ipv6_find_idev+0x102/0x170 [ 2274.373095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.373095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.373095][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.373095][ T72] netlink_unicast+0x449/0x710 [ 2274.373095][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.373095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.373095][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.373095][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.373095][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.373095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.373095][ T72] [ 2274.375343][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2274.375968][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2274.375968][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.375968][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.375968][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.375968][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.375968][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.375968][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.375968][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.375968][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.375968][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.375968][ T72] netlink_unicast+0x449/0x710 [ 2274.375968][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.375968][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.375968][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.375968][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.375968][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.375968][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.375968][ T72] [ 2274.378131][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2274.378131][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.378131][ T72] ipv6_find_idev+0x102/0x170 [ 2274.378131][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.378131][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.378131][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.378131][ T72] netlink_unicast+0x449/0x710 [ 2274.378131][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.378131][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.378131][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.378131][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.378131][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.378131][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.378131][ T72] [ 2274.379781][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2274.379781][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.379781][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.379781][ T72] ipv6_find_idev+0x102/0x170 [ 2274.379781][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.379781][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.379781][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.379781][ T72] netlink_unicast+0x449/0x710 [ 2274.379781][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.379781][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.379781][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.379781][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.379781][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.379781][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.379781][ T72] [ 2274.381603][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2274.381939][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2274.381939][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.381939][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.381939][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.381939][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.381939][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.381939][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.381939][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.381939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.381939][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.381939][ T72] netlink_unicast+0x449/0x710 [ 2274.381939][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.381939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.381939][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.381939][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.381939][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.381939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.381939][ T72] [ 2274.384108][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2274.384108][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.384108][ T72] ipv6_find_idev+0x102/0x170 [ 2274.384108][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.384108][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.384108][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.384108][ T72] netlink_unicast+0x449/0x710 [ 2274.384108][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.384108][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.384108][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.384108][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.384108][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.384108][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.384108][ T72] [ 2274.385841][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2274.385841][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.385841][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.385841][ T72] ipv6_find_idev+0x102/0x170 [ 2274.385841][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.385841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.385841][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.385841][ T72] netlink_unicast+0x449/0x710 [ 2274.385841][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.385841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.385841][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.385841][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.385841][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.385841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.385841][ T72] [ 2274.387899][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2274.388226][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2274.388226][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.388226][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.388226][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.388226][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.388226][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.388226][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.388226][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.388226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.388226][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.388226][ T72] netlink_unicast+0x449/0x710 [ 2274.388226][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.388226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.388226][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.388226][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.388226][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.388226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.388226][ T72] [ 2274.390653][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2274.390653][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.390653][ T72] ipv6_find_idev+0x102/0x170 [ 2274.390653][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.390653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.390653][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.390653][ T72] netlink_unicast+0x449/0x710 [ 2274.390653][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.390653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.390653][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.390653][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.390653][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.390653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.390653][ T72] [ 2274.392510][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2274.392510][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.392510][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.392510][ T72] ipv6_find_idev+0x102/0x170 [ 2274.392510][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.392510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.392510][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.392510][ T72] netlink_unicast+0x449/0x710 [ 2274.392510][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.392510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.392510][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.392510][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.392510][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.392510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.392510][ T72] [ 2274.394541][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2274.394884][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2274.394884][ T72] netdev_get_by_index+0x5e/0x80 [ 2274.394884][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2274.394884][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2274.394884][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2274.394884][ T72] ipv6_add_addr+0x411/0x2000 [ 2274.394884][ T72] inet6_addr_add+0x30e/0xa40 [ 2274.394884][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2274.394884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.394884][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.394884][ T72] netlink_unicast+0x449/0x710 [ 2274.394884][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.394884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.394884][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.394884][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.394884][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.394884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.394884][ T72] [ 2274.397722][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2274.397722][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2274.397722][ T72] ipv6_find_idev+0x102/0x170 [ 2274.397722][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.397722][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.397722][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.397722][ T72] netlink_unicast+0x449/0x710 [ 2274.397722][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.397722][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.397722][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.397722][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.397722][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.397722][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.397722][ T72] [ 2274.399567][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2274.399567][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2274.399567][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2274.399567][ T72] ipv6_find_idev+0x102/0x170 [ 2274.399567][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2274.399567][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2274.399567][ T72] netlink_rcv_skb+0x130/0x360 [ 2274.399567][ T72] netlink_unicast+0x449/0x710 [ 2274.399567][ T72] netlink_sendmsg+0x723/0xbe0 [ 2274.399567][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2274.399567][ T72] ___sys_sendmsg+0xee/0x170 [ 2274.399567][ T72] __sys_sendmsg+0xcd/0x170 [ 2274.399567][ T72] do_syscall_64+0xc6/0x1e0 [ 2274.399567][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2274.399567][ T72] [ 2284.654803][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2284.655208][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2284.655208][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.655208][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.655208][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.655208][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.655208][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.655208][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.655208][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.655208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.655208][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.655208][ T72] netlink_unicast+0x449/0x710 [ 2284.655208][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.655208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.655208][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.655208][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.655208][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.655208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.655208][ T72] [ 2284.657218][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2284.657218][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.657218][ T72] ipv6_find_idev+0x102/0x170 [ 2284.657218][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.657218][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.657218][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.657218][ T72] netlink_unicast+0x449/0x710 [ 2284.657218][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.657218][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.657218][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.657218][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.657218][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.657218][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.657218][ T72] [ 2284.658771][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2284.658771][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.658771][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.658771][ T72] ipv6_find_idev+0x102/0x170 [ 2284.658771][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.658771][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.658771][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.658771][ T72] netlink_unicast+0x449/0x710 [ 2284.658771][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.658771][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.658771][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.658771][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.658771][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.658771][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.658771][ T72] [ 2284.660493][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2284.660755][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2284.660755][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.660755][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.660755][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.660755][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.660755][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.660755][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.660755][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.660755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.660755][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.660755][ T72] netlink_unicast+0x449/0x710 [ 2284.660755][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.660755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.660755][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.660755][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.660755][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.660755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.660755][ T72] [ 2284.662762][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2284.662762][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.662762][ T72] ipv6_find_idev+0x102/0x170 [ 2284.662762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.662762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.662762][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.662762][ T72] netlink_unicast+0x449/0x710 [ 2284.662762][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.662762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.662762][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.662762][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.662762][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.662762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.662762][ T72] [ 2284.664332][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2284.664332][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.664332][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.664332][ T72] ipv6_find_idev+0x102/0x170 [ 2284.664332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.664332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.664332][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.664332][ T72] netlink_unicast+0x449/0x710 [ 2284.664332][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.664332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.664332][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.664332][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.664332][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.664332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.664332][ T72] [ 2284.666009][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2284.666274][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2284.666274][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.666274][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.666274][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.666274][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.666274][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.666274][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.666274][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.666274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.666274][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.666274][ T72] netlink_unicast+0x449/0x710 [ 2284.666274][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.666274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.666274][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.666274][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.666274][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.666274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.666274][ T72] [ 2284.668255][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2284.668255][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.668255][ T72] ipv6_find_idev+0x102/0x170 [ 2284.668255][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.668255][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.668255][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.668255][ T72] netlink_unicast+0x449/0x710 [ 2284.668255][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.668255][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.668255][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.668255][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.668255][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.668255][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.668255][ T72] [ 2284.669778][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2284.669778][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.669778][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.669778][ T72] ipv6_find_idev+0x102/0x170 [ 2284.669778][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.669778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.669778][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.669778][ T72] netlink_unicast+0x449/0x710 [ 2284.669778][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.669778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.669778][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.669778][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.669778][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.669778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.669778][ T72] [ 2284.671441][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2284.671706][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2284.671706][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.671706][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.671706][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.671706][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.671706][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.671706][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.671706][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.671706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.671706][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.671706][ T72] netlink_unicast+0x449/0x710 [ 2284.671706][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.671706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.671706][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.671706][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.671706][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.671706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.671706][ T72] [ 2284.673669][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2284.673669][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.673669][ T72] ipv6_find_idev+0x102/0x170 [ 2284.673669][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.673669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.673669][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.673669][ T72] netlink_unicast+0x449/0x710 [ 2284.673669][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.673669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.673669][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.673669][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.673669][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.673669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.673669][ T72] [ 2284.675197][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2284.675197][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.675197][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.675197][ T72] ipv6_find_idev+0x102/0x170 [ 2284.675197][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.675197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.675197][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.675197][ T72] netlink_unicast+0x449/0x710 [ 2284.675197][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.675197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.675197][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.675197][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.675197][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.675197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.675197][ T72] [ 2284.677252][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2284.677512][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2284.677512][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.677512][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.677512][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.677512][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.677512][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.677512][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.677512][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.677512][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.677512][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.677512][ T72] netlink_unicast+0x449/0x710 [ 2284.677512][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.677512][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.677512][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.677512][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.677512][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.677512][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.677512][ T72] [ 2284.679466][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2284.679466][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.679466][ T72] ipv6_find_idev+0x102/0x170 [ 2284.679466][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.679466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.679466][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.679466][ T72] netlink_unicast+0x449/0x710 [ 2284.679466][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.679466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.679466][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.679466][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.679466][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.679466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.679466][ T72] [ 2284.680986][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2284.680986][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.680986][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.680986][ T72] ipv6_find_idev+0x102/0x170 [ 2284.680986][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.680986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.680986][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.680986][ T72] netlink_unicast+0x449/0x710 [ 2284.680986][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.680986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.680986][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.680986][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.680986][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.680986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.680986][ T72] [ 2284.682681][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2284.683002][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2284.683002][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.683002][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.683002][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.683002][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.683002][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.683002][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.683002][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.683002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.683002][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.683002][ T72] netlink_unicast+0x449/0x710 [ 2284.683002][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.683002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.683002][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.683002][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.683002][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.683002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.683002][ T72] [ 2284.685093][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2284.685093][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.685093][ T72] ipv6_find_idev+0x102/0x170 [ 2284.685093][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.685093][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.685093][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.685093][ T72] netlink_unicast+0x449/0x710 [ 2284.685093][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.685093][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.685093][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.685093][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.685093][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.685093][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.685093][ T72] [ 2284.686794][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2284.686794][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.686794][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.686794][ T72] ipv6_find_idev+0x102/0x170 [ 2284.686794][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.686794][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.686794][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.686794][ T72] netlink_unicast+0x449/0x710 [ 2284.686794][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.686794][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.686794][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.686794][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.686794][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.686794][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.686794][ T72] [ 2284.688806][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2284.689072][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2284.689072][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.689072][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.689072][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.689072][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.689072][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.689072][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.689072][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.689072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.689072][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.689072][ T72] netlink_unicast+0x449/0x710 [ 2284.689072][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.689072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.689072][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.689072][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.689072][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.689072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.689072][ T72] [ 2284.691337][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2284.691337][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.691337][ T72] ipv6_find_idev+0x102/0x170 [ 2284.691337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.691337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.691337][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.691337][ T72] netlink_unicast+0x449/0x710 [ 2284.691337][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.691337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.691337][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.691337][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.691337][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.691337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.691337][ T72] [ 2284.693042][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2284.693042][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.693042][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.693042][ T72] ipv6_find_idev+0x102/0x170 [ 2284.693042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.693042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.693042][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.693042][ T72] netlink_unicast+0x449/0x710 [ 2284.693042][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.693042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.693042][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.693042][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.693042][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.693042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.693042][ T72] [ 2284.694911][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2284.695175][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2284.695175][ T72] netdev_get_by_index+0x5e/0x80 [ 2284.695175][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2284.695175][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2284.695175][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2284.695175][ T72] ipv6_add_addr+0x411/0x2000 [ 2284.695175][ T72] inet6_addr_add+0x30e/0xa40 [ 2284.695175][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2284.695175][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.695175][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.695175][ T72] netlink_unicast+0x449/0x710 [ 2284.695175][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.695175][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.695175][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.695175][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.695175][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.695175][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.695175][ T72] [ 2284.697320][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2284.697320][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2284.697320][ T72] ipv6_find_idev+0x102/0x170 [ 2284.697320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.697320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.697320][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.697320][ T72] netlink_unicast+0x449/0x710 [ 2284.697320][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.697320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.697320][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.697320][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.697320][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.697320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.697320][ T72] [ 2284.699064][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2284.699064][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2284.699064][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2284.699064][ T72] ipv6_find_idev+0x102/0x170 [ 2284.699064][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2284.699064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2284.699064][ T72] netlink_rcv_skb+0x130/0x360 [ 2284.699064][ T72] netlink_unicast+0x449/0x710 [ 2284.699064][ T72] netlink_sendmsg+0x723/0xbe0 [ 2284.699064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2284.699064][ T72] ___sys_sendmsg+0xee/0x170 [ 2284.699064][ T72] __sys_sendmsg+0xcd/0x170 [ 2284.699064][ T72] do_syscall_64+0xc6/0x1e0 [ 2284.699064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2284.699064][ T72] [ 2294.862883][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2294.863298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2294.863298][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.863298][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.863298][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.863298][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.863298][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.863298][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.863298][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.863298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.863298][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.863298][ T72] netlink_unicast+0x449/0x710 [ 2294.863298][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.863298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.863298][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.863298][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.863298][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.863298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.863298][ T72] [ 2294.865276][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2294.865276][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.865276][ T72] ipv6_find_idev+0x102/0x170 [ 2294.865276][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.865276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.865276][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.865276][ T72] netlink_unicast+0x449/0x710 [ 2294.865276][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.865276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.865276][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.865276][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.865276][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.865276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.865276][ T72] [ 2294.866798][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2294.866798][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.866798][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.866798][ T72] ipv6_find_idev+0x102/0x170 [ 2294.866798][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.866798][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.866798][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.866798][ T72] netlink_unicast+0x449/0x710 [ 2294.866798][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.866798][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.866798][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.866798][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.866798][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.866798][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.866798][ T72] [ 2294.868465][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2294.868785][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2294.868785][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.868785][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.868785][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.868785][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.868785][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.868785][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.868785][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.868785][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.868785][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.868785][ T72] netlink_unicast+0x449/0x710 [ 2294.868785][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.868785][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.868785][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.868785][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.868785][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.868785][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.868785][ T72] [ 2294.870747][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2294.870747][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.870747][ T72] ipv6_find_idev+0x102/0x170 [ 2294.870747][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.870747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.870747][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.870747][ T72] netlink_unicast+0x449/0x710 [ 2294.870747][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.870747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.870747][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.870747][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.870747][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.870747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.870747][ T72] [ 2294.872266][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2294.872266][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.872266][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.872266][ T72] ipv6_find_idev+0x102/0x170 [ 2294.872266][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.872266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.872266][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.872266][ T72] netlink_unicast+0x449/0x710 [ 2294.872266][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.872266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.872266][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.872266][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.872266][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.872266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.872266][ T72] [ 2294.873916][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2294.874174][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2294.874174][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.874174][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.874174][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.874174][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.874174][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.874174][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.874174][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.874174][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.874174][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.874174][ T72] netlink_unicast+0x449/0x710 [ 2294.874174][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.874174][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.874174][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.874174][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.874174][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.874174][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.874174][ T72] [ 2294.876137][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2294.876137][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.876137][ T72] ipv6_find_idev+0x102/0x170 [ 2294.876137][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.876137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.876137][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.876137][ T72] netlink_unicast+0x449/0x710 [ 2294.876137][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.876137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.876137][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.876137][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.876137][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.876137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.876137][ T72] [ 2294.877661][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2294.877661][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.877661][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.877661][ T72] ipv6_find_idev+0x102/0x170 [ 2294.877661][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.877661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.877661][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.877661][ T72] netlink_unicast+0x449/0x710 [ 2294.877661][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.877661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.877661][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.877661][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.877661][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.877661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.877661][ T72] [ 2294.879314][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2294.879570][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2294.879570][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.879570][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.879570][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.879570][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.879570][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.879570][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.879570][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.879570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.879570][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.879570][ T72] netlink_unicast+0x449/0x710 [ 2294.879570][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.879570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.879570][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.879570][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.879570][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.879570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.879570][ T72] [ 2294.881538][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2294.881538][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.881538][ T72] ipv6_find_idev+0x102/0x170 [ 2294.881538][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.881538][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.881538][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.881538][ T72] netlink_unicast+0x449/0x710 [ 2294.881538][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.881538][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.881538][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.881538][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.881538][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.881538][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.881538][ T72] [ 2294.883047][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2294.883047][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.883047][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.883047][ T72] ipv6_find_idev+0x102/0x170 [ 2294.883047][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.883047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.883047][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.883047][ T72] netlink_unicast+0x449/0x710 [ 2294.883047][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.883047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.883047][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.883047][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.883047][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.883047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.883047][ T72] [ 2294.884701][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2294.885021][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2294.885021][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.885021][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.885021][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.885021][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.885021][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.885021][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.885021][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.885021][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.885021][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.885021][ T72] netlink_unicast+0x449/0x710 [ 2294.885021][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.885021][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.885021][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.885021][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.885021][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.885021][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.885021][ T72] [ 2294.886984][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2294.886984][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.886984][ T72] ipv6_find_idev+0x102/0x170 [ 2294.886984][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.886984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.886984][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.886984][ T72] netlink_unicast+0x449/0x710 [ 2294.886984][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.886984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.886984][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.886984][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.886984][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.886984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.886984][ T72] [ 2294.888558][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2294.888558][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.888558][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.888558][ T72] ipv6_find_idev+0x102/0x170 [ 2294.888558][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.888558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.888558][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.888558][ T72] netlink_unicast+0x449/0x710 [ 2294.888558][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.888558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.888558][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.888558][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.888558][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.888558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.888558][ T72] [ 2294.890503][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2294.890764][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2294.890764][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.890764][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.890764][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.890764][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.890764][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.890764][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.890764][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.890764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.890764][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.890764][ T72] netlink_unicast+0x449/0x710 [ 2294.890764][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.890764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.890764][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.890764][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.890764][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.890764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.890764][ T72] [ 2294.892964][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2294.892964][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.892964][ T72] ipv6_find_idev+0x102/0x170 [ 2294.892964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.892964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.892964][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.892964][ T72] netlink_unicast+0x449/0x710 [ 2294.892964][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.892964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.892964][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.892964][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.892964][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.892964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.892964][ T72] [ 2294.894653][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2294.894653][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.894653][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.894653][ T72] ipv6_find_idev+0x102/0x170 [ 2294.894653][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.894653][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.894653][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.894653][ T72] netlink_unicast+0x449/0x710 [ 2294.894653][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.894653][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.894653][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.894653][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.894653][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.894653][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.894653][ T72] [ 2294.896521][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2294.896781][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2294.896781][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.896781][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.896781][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.896781][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.896781][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.896781][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.896781][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.896781][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.896781][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.896781][ T72] netlink_unicast+0x449/0x710 [ 2294.896781][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.896781][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.896781][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.896781][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.896781][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.896781][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.896781][ T72] [ 2294.899039][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2294.899039][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.899039][ T72] ipv6_find_idev+0x102/0x170 [ 2294.899039][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.899039][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.899039][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.899039][ T72] netlink_unicast+0x449/0x710 [ 2294.899039][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.899039][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.899039][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.899039][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.899039][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.899039][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.899039][ T72] [ 2294.900800][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2294.900800][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.900800][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.900800][ T72] ipv6_find_idev+0x102/0x170 [ 2294.900800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.900800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.900800][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.900800][ T72] netlink_unicast+0x449/0x710 [ 2294.900800][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.900800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.900800][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.900800][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.900800][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.900800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.900800][ T72] [ 2294.902698][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2294.903023][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2294.903023][ T72] netdev_get_by_index+0x5e/0x80 [ 2294.903023][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2294.903023][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2294.903023][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2294.903023][ T72] ipv6_add_addr+0x411/0x2000 [ 2294.903023][ T72] inet6_addr_add+0x30e/0xa40 [ 2294.903023][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2294.903023][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.903023][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.903023][ T72] netlink_unicast+0x449/0x710 [ 2294.903023][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.903023][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.903023][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.903023][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.903023][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.903023][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.903023][ T72] [ 2294.905155][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2294.905155][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2294.905155][ T72] ipv6_find_idev+0x102/0x170 [ 2294.905155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.905155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.905155][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.905155][ T72] netlink_unicast+0x449/0x710 [ 2294.905155][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.905155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.905155][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.905155][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.905155][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.905155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.905155][ T72] [ 2294.906852][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2294.906852][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2294.906852][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2294.906852][ T72] ipv6_find_idev+0x102/0x170 [ 2294.906852][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2294.906852][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2294.906852][ T72] netlink_rcv_skb+0x130/0x360 [ 2294.906852][ T72] netlink_unicast+0x449/0x710 [ 2294.906852][ T72] netlink_sendmsg+0x723/0xbe0 [ 2294.906852][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2294.906852][ T72] ___sys_sendmsg+0xee/0x170 [ 2294.906852][ T72] __sys_sendmsg+0xcd/0x170 [ 2294.906852][ T72] do_syscall_64+0xc6/0x1e0 [ 2294.906852][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2294.906852][ T72] [ 2304.958858][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2304.959275][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2304.959275][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.959275][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.959275][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.959275][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.959275][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.959275][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.959275][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.959275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.959275][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.959275][ T72] netlink_unicast+0x449/0x710 [ 2304.959275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.959275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.959275][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.959275][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.959275][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.959275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.959275][ T72] [ 2304.961262][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2304.961262][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2304.961262][ T72] ipv6_find_idev+0x102/0x170 [ 2304.961262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.961262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.961262][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.961262][ T72] netlink_unicast+0x449/0x710 [ 2304.961262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.961262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.961262][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.961262][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.961262][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.961262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.961262][ T72] [ 2304.962773][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2304.962773][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2304.962773][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2304.962773][ T72] ipv6_find_idev+0x102/0x170 [ 2304.962773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.962773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.962773][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.962773][ T72] netlink_unicast+0x449/0x710 [ 2304.962773][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.962773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.962773][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.962773][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.962773][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.962773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.962773][ T72] [ 2304.964970][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2304.965246][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2304.965246][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.965246][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.965246][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.965246][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.965246][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.965246][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.965246][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.965246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.965246][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.965246][ T72] netlink_unicast+0x449/0x710 [ 2304.965246][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.965246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.965246][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.965246][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.965246][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.965246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.965246][ T72] [ 2304.967205][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2304.967205][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2304.967205][ T72] ipv6_find_idev+0x102/0x170 [ 2304.967205][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.967205][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.967205][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.967205][ T72] netlink_unicast+0x449/0x710 [ 2304.967205][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.967205][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.967205][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.967205][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.967205][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.967205][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.967205][ T72] [ 2304.968728][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2304.968728][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2304.968728][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2304.968728][ T72] ipv6_find_idev+0x102/0x170 [ 2304.968728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.968728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.968728][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.968728][ T72] netlink_unicast+0x449/0x710 [ 2304.968728][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.968728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.968728][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.968728][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.968728][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.968728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.968728][ T72] [ 2304.970387][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2304.970646][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2304.970646][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.970646][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.970646][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.970646][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.970646][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.970646][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.970646][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.970646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.970646][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.970646][ T72] netlink_unicast+0x449/0x710 [ 2304.970646][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.970646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.970646][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.970646][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.970646][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.970646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.970646][ T72] [ 2304.972622][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2304.972622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2304.972622][ T72] ipv6_find_idev+0x102/0x170 [ 2304.972622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.972622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.972622][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.972622][ T72] netlink_unicast+0x449/0x710 [ 2304.972622][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.972622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.972622][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.972622][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.972622][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.972622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.972622][ T72] [ 2304.974137][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2304.974137][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2304.974137][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2304.974137][ T72] ipv6_find_idev+0x102/0x170 [ 2304.974137][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.974137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.974137][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.974137][ T72] netlink_unicast+0x449/0x710 [ 2304.974137][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.974137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.974137][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.974137][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.974137][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.974137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.974137][ T72] [ 2304.975793][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2304.976054][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2304.976054][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.976054][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.976054][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.976054][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.976054][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.976054][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.976054][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.976054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.976054][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.976054][ T72] netlink_unicast+0x449/0x710 [ 2304.976054][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.976054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.976054][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.976054][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.976054][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.976054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.976054][ T72] [ 2304.978402][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2304.978402][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2304.978402][ T72] ipv6_find_idev+0x102/0x170 [ 2304.978402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.978402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.978402][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.978402][ T72] netlink_unicast+0x449/0x710 [ 2304.978402][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.978402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.978402][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.978402][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.978402][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.978402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.978402][ T72] [ 2304.979922][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2304.979922][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2304.979922][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2304.979922][ T72] ipv6_find_idev+0x102/0x170 [ 2304.979922][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.979922][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.979922][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.979922][ T72] netlink_unicast+0x449/0x710 [ 2304.979922][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.979922][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.979922][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.979922][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.979922][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.979922][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.979922][ T72] [ 2304.981992][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2304.982252][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2304.982252][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.982252][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.982252][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.982252][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.982252][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.982252][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.982252][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.982252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.982252][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.982252][ T72] netlink_unicast+0x449/0x710 [ 2304.982252][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.982252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.982252][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.982252][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.982252][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.982252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.982252][ T72] [ 2304.984204][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2304.984204][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2304.984204][ T72] ipv6_find_idev+0x102/0x170 [ 2304.984204][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.984204][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.984204][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.984204][ T72] netlink_unicast+0x449/0x710 [ 2304.984204][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.984204][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.984204][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.984204][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.984204][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.984204][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.984204][ T72] [ 2304.985714][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2304.985714][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2304.985714][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2304.985714][ T72] ipv6_find_idev+0x102/0x170 [ 2304.985714][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.985714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.985714][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.985714][ T72] netlink_unicast+0x449/0x710 [ 2304.985714][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.985714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.985714][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.985714][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.985714][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.985714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.985714][ T72] [ 2304.987400][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2304.987661][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2304.987661][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.987661][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.987661][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.987661][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.987661][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.987661][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.987661][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.987661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.987661][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.987661][ T72] netlink_unicast+0x449/0x710 [ 2304.987661][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.987661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.987661][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.987661][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.987661][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.987661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.987661][ T72] [ 2304.989897][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2304.989897][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2304.989897][ T72] ipv6_find_idev+0x102/0x170 [ 2304.989897][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.989897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.989897][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.989897][ T72] netlink_unicast+0x449/0x710 [ 2304.989897][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.989897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.989897][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.989897][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.989897][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.989897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.989897][ T72] [ 2304.991651][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2304.991651][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2304.991651][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2304.991651][ T72] ipv6_find_idev+0x102/0x170 [ 2304.991651][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.991651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.991651][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.991651][ T72] netlink_unicast+0x449/0x710 [ 2304.991651][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.991651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.991651][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.991651][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.991651][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.991651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.991651][ T72] [ 2304.993510][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2304.993773][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2304.993773][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.993773][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.993773][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.993773][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.993773][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.993773][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.993773][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.993773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.993773][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.993773][ T72] netlink_unicast+0x449/0x710 [ 2304.993773][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.993773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.993773][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.993773][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.993773][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.993773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.993773][ T72] [ 2304.995979][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2304.995979][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2304.995979][ T72] ipv6_find_idev+0x102/0x170 [ 2304.995979][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.995979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.995979][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.995979][ T72] netlink_unicast+0x449/0x710 [ 2304.995979][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.995979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.995979][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.995979][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.995979][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.995979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.995979][ T72] [ 2304.997666][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2304.997666][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2304.997666][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2304.997666][ T72] ipv6_find_idev+0x102/0x170 [ 2304.997666][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2304.997666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.997666][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.997666][ T72] netlink_unicast+0x449/0x710 [ 2304.997666][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.997666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.997666][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.997666][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.997666][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.997666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.997666][ T72] [ 2304.999530][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2304.999847][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2304.999847][ T72] netdev_get_by_index+0x5e/0x80 [ 2304.999847][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2304.999847][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2304.999847][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2304.999847][ T72] ipv6_add_addr+0x411/0x2000 [ 2304.999847][ T72] inet6_addr_add+0x30e/0xa40 [ 2304.999847][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2304.999847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2304.999847][ T72] netlink_rcv_skb+0x130/0x360 [ 2304.999847][ T72] netlink_unicast+0x449/0x710 [ 2304.999847][ T72] netlink_sendmsg+0x723/0xbe0 [ 2304.999847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2304.999847][ T72] ___sys_sendmsg+0xee/0x170 [ 2304.999847][ T72] __sys_sendmsg+0xcd/0x170 [ 2304.999847][ T72] do_syscall_64+0xc6/0x1e0 [ 2304.999847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2304.999847][ T72] [ 2305.002061][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2305.002061][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2305.002061][ T72] ipv6_find_idev+0x102/0x170 [ 2305.002061][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2305.002061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2305.002061][ T72] netlink_rcv_skb+0x130/0x360 [ 2305.002061][ T72] netlink_unicast+0x449/0x710 [ 2305.002061][ T72] netlink_sendmsg+0x723/0xbe0 [ 2305.002061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2305.002061][ T72] ___sys_sendmsg+0xee/0x170 [ 2305.002061][ T72] __sys_sendmsg+0xcd/0x170 [ 2305.002061][ T72] do_syscall_64+0xc6/0x1e0 [ 2305.002061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2305.002061][ T72] [ 2305.003755][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2305.003755][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2305.003755][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2305.003755][ T72] ipv6_find_idev+0x102/0x170 [ 2305.003755][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2305.003755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2305.003755][ T72] netlink_rcv_skb+0x130/0x360 [ 2305.003755][ T72] netlink_unicast+0x449/0x710 [ 2305.003755][ T72] netlink_sendmsg+0x723/0xbe0 [ 2305.003755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2305.003755][ T72] ___sys_sendmsg+0xee/0x170 [ 2305.003755][ T72] __sys_sendmsg+0xcd/0x170 [ 2305.003755][ T72] do_syscall_64+0xc6/0x1e0 [ 2305.003755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2305.003755][ T72] [ 2315.166937][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2315.167425][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2315.167425][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.167425][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.167425][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.167425][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.167425][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.167425][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.167425][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.167425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.167425][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.167425][ T72] netlink_unicast+0x449/0x710 [ 2315.167425][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.167425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.167425][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.167425][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.167425][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.167425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.167425][ T72] [ 2315.169402][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2315.169402][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.169402][ T72] ipv6_find_idev+0x102/0x170 [ 2315.169402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.169402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.169402][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.169402][ T72] netlink_unicast+0x449/0x710 [ 2315.169402][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.169402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.169402][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.169402][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.169402][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.169402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.169402][ T72] [ 2315.170932][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2315.170932][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.170932][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.170932][ T72] ipv6_find_idev+0x102/0x170 [ 2315.170932][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.170932][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.170932][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.170932][ T72] netlink_unicast+0x449/0x710 [ 2315.170932][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.170932][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.170932][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.170932][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.170932][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.170932][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.170932][ T72] [ 2315.172606][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2315.172898][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2315.172898][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.172898][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.172898][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.172898][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.172898][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.172898][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.172898][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.172898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.172898][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.172898][ T72] netlink_unicast+0x449/0x710 [ 2315.172898][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.172898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.172898][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.172898][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.172898][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.172898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.172898][ T72] [ 2315.174855][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2315.174855][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.174855][ T72] ipv6_find_idev+0x102/0x170 [ 2315.174855][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.174855][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.174855][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.174855][ T72] netlink_unicast+0x449/0x710 [ 2315.174855][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.174855][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.174855][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.174855][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.174855][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.174855][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.174855][ T72] [ 2315.176369][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2315.176369][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.176369][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.176369][ T72] ipv6_find_idev+0x102/0x170 [ 2315.176369][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.176369][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.176369][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.176369][ T72] netlink_unicast+0x449/0x710 [ 2315.176369][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.176369][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.176369][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.176369][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.176369][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.176369][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.176369][ T72] [ 2315.178026][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2315.178284][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2315.178284][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.178284][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.178284][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.178284][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.178284][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.178284][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.178284][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.178284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.178284][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.178284][ T72] netlink_unicast+0x449/0x710 [ 2315.178284][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.178284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.178284][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.178284][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.178284][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.178284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.178284][ T72] [ 2315.180278][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2315.180278][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.180278][ T72] ipv6_find_idev+0x102/0x170 [ 2315.180278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.180278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.180278][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.180278][ T72] netlink_unicast+0x449/0x710 [ 2315.180278][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.180278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.180278][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.180278][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.180278][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.180278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.180278][ T72] [ 2315.181787][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2315.181787][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.181787][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.181787][ T72] ipv6_find_idev+0x102/0x170 [ 2315.181787][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.181787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.181787][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.181787][ T72] netlink_unicast+0x449/0x710 [ 2315.181787][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.181787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.181787][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.181787][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.181787][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.181787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.181787][ T72] [ 2315.183489][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2315.183818][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2315.183818][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.183818][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.183818][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.183818][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.183818][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.183818][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.183818][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.183818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.183818][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.183818][ T72] netlink_unicast+0x449/0x710 [ 2315.183818][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.183818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.183818][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.183818][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.183818][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.183818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.183818][ T72] [ 2315.185780][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2315.185780][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.185780][ T72] ipv6_find_idev+0x102/0x170 [ 2315.185780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.185780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.185780][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.185780][ T72] netlink_unicast+0x449/0x710 [ 2315.185780][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.185780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.185780][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.185780][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.185780][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.185780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.185780][ T72] [ 2315.187300][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2315.187300][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.187300][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.187300][ T72] ipv6_find_idev+0x102/0x170 [ 2315.187300][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.187300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.187300][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.187300][ T72] netlink_unicast+0x449/0x710 [ 2315.187300][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.187300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.187300][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.187300][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.187300][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.187300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.187300][ T72] [ 2315.189004][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2315.189260][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2315.189260][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.189260][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.189260][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.189260][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.189260][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.189260][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.189260][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.189260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.189260][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.189260][ T72] netlink_unicast+0x449/0x710 [ 2315.189260][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.189260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.189260][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.189260][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.189260][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.189260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.189260][ T72] [ 2315.191244][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2315.191244][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.191244][ T72] ipv6_find_idev+0x102/0x170 [ 2315.191244][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.191244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.191244][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.191244][ T72] netlink_unicast+0x449/0x710 [ 2315.191244][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.191244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.191244][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.191244][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.191244][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.191244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.191244][ T72] [ 2315.192754][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2315.192754][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.192754][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.192754][ T72] ipv6_find_idev+0x102/0x170 [ 2315.192754][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.192754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.192754][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.192754][ T72] netlink_unicast+0x449/0x710 [ 2315.192754][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.192754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.192754][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.192754][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.192754][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.192754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.192754][ T72] [ 2315.194626][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2315.194940][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2315.194940][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.194940][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.194940][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.194940][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.194940][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.194940][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.194940][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.194940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.194940][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.194940][ T72] netlink_unicast+0x449/0x710 [ 2315.194940][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.194940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.194940][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.194940][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.194940][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.194940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.194940][ T72] [ 2315.197135][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2315.197135][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.197135][ T72] ipv6_find_idev+0x102/0x170 [ 2315.197135][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.197135][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.197135][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.197135][ T72] netlink_unicast+0x449/0x710 [ 2315.197135][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.197135][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.197135][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.197135][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.197135][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.197135][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.197135][ T72] [ 2315.198815][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2315.198815][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.198815][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.198815][ T72] ipv6_find_idev+0x102/0x170 [ 2315.198815][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.198815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.198815][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.198815][ T72] netlink_unicast+0x449/0x710 [ 2315.198815][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.198815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.198815][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.198815][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.198815][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.198815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.198815][ T72] [ 2315.200800][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2315.201060][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2315.201060][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.201060][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.201060][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.201060][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.201060][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.201060][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.201060][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.201060][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.201060][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.201060][ T72] netlink_unicast+0x449/0x710 [ 2315.201060][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.201060][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.201060][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.201060][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.201060][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.201060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.201060][ T72] [ 2315.203196][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2315.203196][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.203196][ T72] ipv6_find_idev+0x102/0x170 [ 2315.203196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.203196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.203196][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.203196][ T72] netlink_unicast+0x449/0x710 [ 2315.203196][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.203196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.203196][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.203196][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.203196][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.203196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.203196][ T72] [ 2315.204890][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2315.204890][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.204890][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.204890][ T72] ipv6_find_idev+0x102/0x170 [ 2315.204890][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.204890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.204890][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.204890][ T72] netlink_unicast+0x449/0x710 [ 2315.204890][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.204890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.204890][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.204890][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.204890][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.204890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.204890][ T72] [ 2315.206821][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2315.207084][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2315.207084][ T72] netdev_get_by_index+0x5e/0x80 [ 2315.207084][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2315.207084][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2315.207084][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2315.207084][ T72] ipv6_add_addr+0x411/0x2000 [ 2315.207084][ T72] inet6_addr_add+0x30e/0xa40 [ 2315.207084][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2315.207084][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.207084][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.207084][ T72] netlink_unicast+0x449/0x710 [ 2315.207084][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.207084][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.207084][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.207084][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.207084][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.207084][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.207084][ T72] [ 2315.209279][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2315.209279][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2315.209279][ T72] ipv6_find_idev+0x102/0x170 [ 2315.209279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.209279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.209279][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.209279][ T72] netlink_unicast+0x449/0x710 [ 2315.209279][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.209279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.209279][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.209279][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.209279][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.209279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.209279][ T72] [ 2315.211003][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2315.211003][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2315.211003][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2315.211003][ T72] ipv6_find_idev+0x102/0x170 [ 2315.211003][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2315.211003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2315.211003][ T72] netlink_rcv_skb+0x130/0x360 [ 2315.211003][ T72] netlink_unicast+0x449/0x710 [ 2315.211003][ T72] netlink_sendmsg+0x723/0xbe0 [ 2315.211003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2315.211003][ T72] ___sys_sendmsg+0xee/0x170 [ 2315.211003][ T72] __sys_sendmsg+0xcd/0x170 [ 2315.211003][ T72] do_syscall_64+0xc6/0x1e0 [ 2315.211003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2315.211003][ T72] [ 2325.438900][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2325.439323][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2325.439323][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.439323][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.439323][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.439323][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.439323][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.439323][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.439323][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.439323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.439323][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.439323][ T72] netlink_unicast+0x449/0x710 [ 2325.439323][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.439323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.439323][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.439323][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.439323][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.439323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.439323][ T72] [ 2325.441348][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2325.441348][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.441348][ T72] ipv6_find_idev+0x102/0x170 [ 2325.441348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.441348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.441348][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.441348][ T72] netlink_unicast+0x449/0x710 [ 2325.441348][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.441348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.441348][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.441348][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.441348][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.441348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.441348][ T72] [ 2325.442872][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2325.442872][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.442872][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.442872][ T72] ipv6_find_idev+0x102/0x170 [ 2325.442872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.442872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.442872][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.442872][ T72] netlink_unicast+0x449/0x710 [ 2325.442872][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.442872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.442872][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.442872][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.442872][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.442872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.442872][ T72] [ 2325.444548][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2325.444833][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2325.444833][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.444833][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.444833][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.444833][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.444833][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.444833][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.444833][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.444833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.444833][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.444833][ T72] netlink_unicast+0x449/0x710 [ 2325.444833][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.444833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.444833][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.444833][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.444833][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.444833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.444833][ T72] [ 2325.446886][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2325.446886][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.446886][ T72] ipv6_find_idev+0x102/0x170 [ 2325.446886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.446886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.446886][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.446886][ T72] netlink_unicast+0x449/0x710 [ 2325.446886][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.446886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.446886][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.446886][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.446886][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.446886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.446886][ T72] [ 2325.448402][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2325.448402][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.448402][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.448402][ T72] ipv6_find_idev+0x102/0x170 [ 2325.448402][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.448402][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.448402][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.448402][ T72] netlink_unicast+0x449/0x710 [ 2325.448402][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.448402][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.448402][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.448402][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.448402][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.448402][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.448402][ T72] [ 2325.450066][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2325.450334][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2325.450334][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.450334][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.450334][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.450334][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.450334][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.450334][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.450334][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.450334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.450334][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.450334][ T72] netlink_unicast+0x449/0x710 [ 2325.450334][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.450334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.450334][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.450334][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.450334][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.450334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.450334][ T72] [ 2325.452323][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2325.452323][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.452323][ T72] ipv6_find_idev+0x102/0x170 [ 2325.452323][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.452323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.452323][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.452323][ T72] netlink_unicast+0x449/0x710 [ 2325.452323][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.452323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.452323][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.452323][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.452323][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.452323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.452323][ T72] [ 2325.453837][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2325.453837][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.453837][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.453837][ T72] ipv6_find_idev+0x102/0x170 [ 2325.453837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.453837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.453837][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.453837][ T72] netlink_unicast+0x449/0x710 [ 2325.453837][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.453837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.453837][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.453837][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.453837][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.453837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.453837][ T72] [ 2325.455495][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2325.455762][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2325.455762][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.455762][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.455762][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.455762][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.455762][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.455762][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.455762][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.455762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.455762][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.455762][ T72] netlink_unicast+0x449/0x710 [ 2325.455762][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.455762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.455762][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.455762][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.455762][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.455762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.455762][ T72] [ 2325.457728][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2325.457728][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.457728][ T72] ipv6_find_idev+0x102/0x170 [ 2325.457728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.457728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.457728][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.457728][ T72] netlink_unicast+0x449/0x710 [ 2325.457728][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.457728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.457728][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.457728][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.457728][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.457728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.457728][ T72] [ 2325.459239][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2325.459239][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.459239][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.459239][ T72] ipv6_find_idev+0x102/0x170 [ 2325.459239][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.459239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.459239][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.459239][ T72] netlink_unicast+0x449/0x710 [ 2325.459239][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.459239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.459239][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.459239][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.459239][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.459239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.459239][ T72] [ 2325.461297][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2325.461558][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2325.461558][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.461558][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.461558][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.461558][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.461558][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.461558][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.461558][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.461558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.461558][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.461558][ T72] netlink_unicast+0x449/0x710 [ 2325.461558][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.461558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.461558][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.461558][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.461558][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.461558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.461558][ T72] [ 2325.463513][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2325.463513][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.463513][ T72] ipv6_find_idev+0x102/0x170 [ 2325.463513][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.463513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.463513][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.463513][ T72] netlink_unicast+0x449/0x710 [ 2325.463513][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.463513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.463513][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.463513][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.463513][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.463513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.463513][ T72] [ 2325.465037][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2325.465037][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.465037][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.465037][ T72] ipv6_find_idev+0x102/0x170 [ 2325.465037][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.465037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.465037][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.465037][ T72] netlink_unicast+0x449/0x710 [ 2325.465037][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.465037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.465037][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.465037][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.465037][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.465037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.465037][ T72] [ 2325.466786][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2325.467055][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2325.467055][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.467055][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.467055][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.467055][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.467055][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.467055][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.467055][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.467055][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.467055][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.467055][ T72] netlink_unicast+0x449/0x710 [ 2325.467055][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.467055][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.467055][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.467055][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.467055][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.467055][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.467055][ T72] [ 2325.469148][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2325.469148][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.469148][ T72] ipv6_find_idev+0x102/0x170 [ 2325.469148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.469148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.469148][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.469148][ T72] netlink_unicast+0x449/0x710 [ 2325.469148][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.469148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.469148][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.469148][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.469148][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.469148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.469148][ T72] [ 2325.470905][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2325.470905][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.470905][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.470905][ T72] ipv6_find_idev+0x102/0x170 [ 2325.470905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.470905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.470905][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.470905][ T72] netlink_unicast+0x449/0x710 [ 2325.470905][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.470905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.470905][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.470905][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.470905][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.470905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.470905][ T72] [ 2325.472784][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2325.473042][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2325.473042][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.473042][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.473042][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.473042][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.473042][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.473042][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.473042][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.473042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.473042][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.473042][ T72] netlink_unicast+0x449/0x710 [ 2325.473042][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.473042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.473042][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.473042][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.473042][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.473042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.473042][ T72] [ 2325.475287][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2325.475287][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.475287][ T72] ipv6_find_idev+0x102/0x170 [ 2325.475287][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.475287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.475287][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.475287][ T72] netlink_unicast+0x449/0x710 [ 2325.475287][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.475287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.475287][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.475287][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.475287][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.475287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.475287][ T72] [ 2325.476979][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2325.476979][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.476979][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.476979][ T72] ipv6_find_idev+0x102/0x170 [ 2325.476979][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.476979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.476979][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.476979][ T72] netlink_unicast+0x449/0x710 [ 2325.476979][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.476979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.476979][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.476979][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.476979][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.476979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.476979][ T72] [ 2325.478850][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2325.479110][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2325.479110][ T72] netdev_get_by_index+0x5e/0x80 [ 2325.479110][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2325.479110][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2325.479110][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2325.479110][ T72] ipv6_add_addr+0x411/0x2000 [ 2325.479110][ T72] inet6_addr_add+0x30e/0xa40 [ 2325.479110][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2325.479110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.479110][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.479110][ T72] netlink_unicast+0x449/0x710 [ 2325.479110][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.479110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.479110][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.479110][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.479110][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.479110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.479110][ T72] [ 2325.481312][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2325.481312][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2325.481312][ T72] ipv6_find_idev+0x102/0x170 [ 2325.481312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.481312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.481312][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.481312][ T72] netlink_unicast+0x449/0x710 [ 2325.481312][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.481312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.481312][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.481312][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.481312][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.481312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.481312][ T72] [ 2325.483010][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2325.483010][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2325.483010][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2325.483010][ T72] ipv6_find_idev+0x102/0x170 [ 2325.483010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2325.483010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2325.483010][ T72] netlink_rcv_skb+0x130/0x360 [ 2325.483010][ T72] netlink_unicast+0x449/0x710 [ 2325.483010][ T72] netlink_sendmsg+0x723/0xbe0 [ 2325.483010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2325.483010][ T72] ___sys_sendmsg+0xee/0x170 [ 2325.483010][ T72] __sys_sendmsg+0xcd/0x170 [ 2325.483010][ T72] do_syscall_64+0xc6/0x1e0 [ 2325.483010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2325.483010][ T72] [ 2335.726920][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2335.727430][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2335.727430][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.727430][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.727430][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.727430][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.727430][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.727430][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.727430][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.727430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.727430][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.727430][ T72] netlink_unicast+0x449/0x710 [ 2335.727430][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.727430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.727430][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.727430][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.727430][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.727430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.727430][ T72] [ 2335.729441][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2335.729441][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.729441][ T72] ipv6_find_idev+0x102/0x170 [ 2335.729441][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.729441][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.729441][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.729441][ T72] netlink_unicast+0x449/0x710 [ 2335.729441][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.729441][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.729441][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.729441][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.729441][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.729441][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.729441][ T72] [ 2335.730989][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2335.730989][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.730989][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.730989][ T72] ipv6_find_idev+0x102/0x170 [ 2335.730989][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.730989][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.730989][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.730989][ T72] netlink_unicast+0x449/0x710 [ 2335.730989][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.730989][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.730989][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.730989][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.730989][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.730989][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.730989][ T72] [ 2335.732687][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2335.732978][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2335.732978][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.732978][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.732978][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.732978][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.732978][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.732978][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.732978][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.732978][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.732978][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.732978][ T72] netlink_unicast+0x449/0x710 [ 2335.732978][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.732978][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.732978][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.732978][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.732978][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.732978][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.732978][ T72] [ 2335.734969][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2335.734969][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.734969][ T72] ipv6_find_idev+0x102/0x170 [ 2335.734969][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.734969][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.734969][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.734969][ T72] netlink_unicast+0x449/0x710 [ 2335.734969][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.734969][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.734969][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.734969][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.734969][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.734969][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.734969][ T72] [ 2335.736511][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2335.736511][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.736511][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.736511][ T72] ipv6_find_idev+0x102/0x170 [ 2335.736511][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.736511][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.736511][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.736511][ T72] netlink_unicast+0x449/0x710 [ 2335.736511][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.736511][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.736511][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.736511][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.736511][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.736511][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.736511][ T72] [ 2335.738196][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2335.738462][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2335.738462][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.738462][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.738462][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.738462][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.738462][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.738462][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.738462][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.738462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.738462][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.738462][ T72] netlink_unicast+0x449/0x710 [ 2335.738462][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.738462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.738462][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.738462][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.738462][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.738462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.738462][ T72] [ 2335.740490][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2335.740490][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.740490][ T72] ipv6_find_idev+0x102/0x170 [ 2335.740490][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.740490][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.740490][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.740490][ T72] netlink_unicast+0x449/0x710 [ 2335.740490][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.740490][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.740490][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.740490][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.740490][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.740490][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.740490][ T72] [ 2335.742023][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2335.742023][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.742023][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.742023][ T72] ipv6_find_idev+0x102/0x170 [ 2335.742023][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.742023][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.742023][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.742023][ T72] netlink_unicast+0x449/0x710 [ 2335.742023][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.742023][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.742023][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.742023][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.742023][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.742023][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.742023][ T72] [ 2335.744116][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2335.744706][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2335.744706][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.744706][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.744706][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.744706][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.744706][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.744706][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.744706][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.744706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.744706][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.744706][ T72] netlink_unicast+0x449/0x710 [ 2335.744706][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.744706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.744706][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.744706][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.744706][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.744706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.744706][ T72] [ 2335.746696][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2335.746696][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.746696][ T72] ipv6_find_idev+0x102/0x170 [ 2335.746696][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.746696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.746696][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.746696][ T72] netlink_unicast+0x449/0x710 [ 2335.746696][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.746696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.746696][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.746696][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.746696][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.746696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.746696][ T72] [ 2335.748228][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2335.748228][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.748228][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.748228][ T72] ipv6_find_idev+0x102/0x170 [ 2335.748228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.748228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.748228][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.748228][ T72] netlink_unicast+0x449/0x710 [ 2335.748228][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.748228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.748228][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.748228][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.748228][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.748228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.748228][ T72] [ 2335.749919][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2335.750202][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2335.750202][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.750202][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.750202][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.750202][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.750202][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.750202][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.750202][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.750202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.750202][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.750202][ T72] netlink_unicast+0x449/0x710 [ 2335.750202][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.750202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.750202][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.750202][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.750202][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.750202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.750202][ T72] [ 2335.752195][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2335.752195][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.752195][ T72] ipv6_find_idev+0x102/0x170 [ 2335.752195][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.752195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.752195][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.752195][ T72] netlink_unicast+0x449/0x710 [ 2335.752195][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.752195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.752195][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.752195][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.752195][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.752195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.752195][ T72] [ 2335.753729][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2335.753729][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.753729][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.753729][ T72] ipv6_find_idev+0x102/0x170 [ 2335.753729][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.753729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.753729][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.753729][ T72] netlink_unicast+0x449/0x710 [ 2335.753729][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.753729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.753729][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.753729][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.753729][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.753729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.753729][ T72] [ 2335.755449][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2335.755764][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2335.755764][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.755764][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.755764][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.755764][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.755764][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.755764][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.755764][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.755764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.755764][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.755764][ T72] netlink_unicast+0x449/0x710 [ 2335.755764][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.755764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.755764][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.755764][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.755764][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.755764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.755764][ T72] [ 2335.757759][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2335.757759][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.757759][ T72] ipv6_find_idev+0x102/0x170 [ 2335.757759][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.757759][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.757759][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.757759][ T72] netlink_unicast+0x449/0x710 [ 2335.757759][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.757759][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.757759][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.757759][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.757759][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.757759][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.757759][ T72] [ 2335.759294][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2335.759294][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.759294][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.759294][ T72] ipv6_find_idev+0x102/0x170 [ 2335.759294][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.759294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.759294][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.759294][ T72] netlink_unicast+0x449/0x710 [ 2335.759294][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.759294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.759294][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.759294][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.759294][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.759294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.759294][ T72] [ 2335.761210][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2335.761516][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2335.761516][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.761516][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.761516][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.761516][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.761516][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.761516][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.761516][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.761516][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.761516][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.761516][ T72] netlink_unicast+0x449/0x710 [ 2335.761516][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.761516][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.761516][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.761516][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.761516][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.761516][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.761516][ T72] [ 2335.763739][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2335.763739][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.763739][ T72] ipv6_find_idev+0x102/0x170 [ 2335.763739][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.763739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.763739][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.763739][ T72] netlink_unicast+0x449/0x710 [ 2335.763739][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.763739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.763739][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.763739][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.763739][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.763739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.763739][ T72] [ 2335.765399][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2335.765399][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.765399][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.765399][ T72] ipv6_find_idev+0x102/0x170 [ 2335.765399][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.765399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.765399][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.765399][ T72] netlink_unicast+0x449/0x710 [ 2335.765399][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.765399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.765399][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.765399][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.765399][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.765399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.765399][ T72] [ 2335.767365][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2335.767677][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2335.767677][ T72] netdev_get_by_index+0x5e/0x80 [ 2335.767677][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2335.767677][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2335.767677][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2335.767677][ T72] ipv6_add_addr+0x411/0x2000 [ 2335.767677][ T72] inet6_addr_add+0x30e/0xa40 [ 2335.767677][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2335.767677][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.767677][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.767677][ T72] netlink_unicast+0x449/0x710 [ 2335.767677][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.767677][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.767677][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.767677][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.767677][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.767677][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.767677][ T72] [ 2335.769847][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2335.769847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2335.769847][ T72] ipv6_find_idev+0x102/0x170 [ 2335.769847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.769847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.769847][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.769847][ T72] netlink_unicast+0x449/0x710 [ 2335.769847][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.769847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.769847][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.769847][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.769847][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.769847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.769847][ T72] [ 2335.771560][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2335.771560][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2335.771560][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2335.771560][ T72] ipv6_find_idev+0x102/0x170 [ 2335.771560][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2335.771560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2335.771560][ T72] netlink_rcv_skb+0x130/0x360 [ 2335.771560][ T72] netlink_unicast+0x449/0x710 [ 2335.771560][ T72] netlink_sendmsg+0x723/0xbe0 [ 2335.771560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2335.771560][ T72] ___sys_sendmsg+0xee/0x170 [ 2335.771560][ T72] __sys_sendmsg+0xcd/0x170 [ 2335.771560][ T72] do_syscall_64+0xc6/0x1e0 [ 2335.771560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2335.771560][ T72] [ 2346.014923][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2346.015446][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2346.015446][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.015446][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.015446][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.015446][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.015446][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.015446][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.015446][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.015446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.015446][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.015446][ T72] netlink_unicast+0x449/0x710 [ 2346.015446][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.015446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.015446][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.015446][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.015446][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.015446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.015446][ T72] [ 2346.017477][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2346.017477][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.017477][ T72] ipv6_find_idev+0x102/0x170 [ 2346.017477][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.017477][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.017477][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.017477][ T72] netlink_unicast+0x449/0x710 [ 2346.017477][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.017477][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.017477][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.017477][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.017477][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.017477][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.017477][ T72] [ 2346.019027][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2346.019027][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.019027][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.019027][ T72] ipv6_find_idev+0x102/0x170 [ 2346.019027][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.019027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.019027][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.019027][ T72] netlink_unicast+0x449/0x710 [ 2346.019027][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.019027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.019027][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.019027][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.019027][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.019027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.019027][ T72] [ 2346.020807][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2346.021078][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2346.021078][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.021078][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.021078][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.021078][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.021078][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.021078][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.021078][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.021078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.021078][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.021078][ T72] netlink_unicast+0x449/0x710 [ 2346.021078][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.021078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.021078][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.021078][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.021078][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.021078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.021078][ T72] [ 2346.023089][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2346.023089][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.023089][ T72] ipv6_find_idev+0x102/0x170 [ 2346.023089][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.023089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.023089][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.023089][ T72] netlink_unicast+0x449/0x710 [ 2346.023089][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.023089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.023089][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.023089][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.023089][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.023089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.023089][ T72] [ 2346.024656][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2346.024656][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.024656][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.024656][ T72] ipv6_find_idev+0x102/0x170 [ 2346.024656][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.024656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.024656][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.024656][ T72] netlink_unicast+0x449/0x710 [ 2346.024656][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.024656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.024656][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.024656][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.024656][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.024656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.024656][ T72] [ 2346.026386][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2346.026658][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2346.026658][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.026658][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.026658][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.026658][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.026658][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.026658][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.026658][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.026658][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.026658][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.026658][ T72] netlink_unicast+0x449/0x710 [ 2346.026658][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.026658][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.026658][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.026658][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.026658][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.026658][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.026658][ T72] [ 2346.028659][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2346.028659][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.028659][ T72] ipv6_find_idev+0x102/0x170 [ 2346.028659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.028659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.028659][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.028659][ T72] netlink_unicast+0x449/0x710 [ 2346.028659][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.028659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.028659][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.028659][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.028659][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.028659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.028659][ T72] [ 2346.030208][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2346.030208][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.030208][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.030208][ T72] ipv6_find_idev+0x102/0x170 [ 2346.030208][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.030208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.030208][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.030208][ T72] netlink_unicast+0x449/0x710 [ 2346.030208][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.030208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.030208][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.030208][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.030208][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.030208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.030208][ T72] [ 2346.031964][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2346.032233][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2346.032233][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.032233][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.032233][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.032233][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.032233][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.032233][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.032233][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.032233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.032233][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.032233][ T72] netlink_unicast+0x449/0x710 [ 2346.032233][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.032233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.032233][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.032233][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.032233][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.032233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.032233][ T72] [ 2346.034248][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2346.034248][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.034248][ T72] ipv6_find_idev+0x102/0x170 [ 2346.034248][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.034248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.034248][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.034248][ T72] netlink_unicast+0x449/0x710 [ 2346.034248][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.034248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.034248][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.034248][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.034248][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.034248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.034248][ T72] [ 2346.035814][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2346.035814][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.035814][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.035814][ T72] ipv6_find_idev+0x102/0x170 [ 2346.035814][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.035814][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.035814][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.035814][ T72] netlink_unicast+0x449/0x710 [ 2346.035814][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.035814][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.035814][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.035814][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.035814][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.035814][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.035814][ T72] [ 2346.037999][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2346.038612][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2346.038612][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.038612][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.038612][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.038612][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.038612][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.038612][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.038612][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.038612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.038612][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.038612][ T72] netlink_unicast+0x449/0x710 [ 2346.038612][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.038612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.038612][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.038612][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.038612][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.038612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.038612][ T72] [ 2346.040633][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2346.040633][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.040633][ T72] ipv6_find_idev+0x102/0x170 [ 2346.040633][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.040633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.040633][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.040633][ T72] netlink_unicast+0x449/0x710 [ 2346.040633][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.040633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.040633][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.040633][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.040633][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.040633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.040633][ T72] [ 2346.042188][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2346.042188][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.042188][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.042188][ T72] ipv6_find_idev+0x102/0x170 [ 2346.042188][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.042188][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.042188][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.042188][ T72] netlink_unicast+0x449/0x710 [ 2346.042188][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.042188][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.042188][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.042188][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.042188][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.042188][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.042188][ T72] [ 2346.043929][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2346.044199][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2346.044199][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.044199][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.044199][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.044199][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.044199][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.044199][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.044199][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.044199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.044199][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.044199][ T72] netlink_unicast+0x449/0x710 [ 2346.044199][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.044199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.044199][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.044199][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.044199][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.044199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.044199][ T72] [ 2346.046219][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2346.046219][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.046219][ T72] ipv6_find_idev+0x102/0x170 [ 2346.046219][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.046219][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.046219][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.046219][ T72] netlink_unicast+0x449/0x710 [ 2346.046219][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.046219][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.046219][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.046219][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.046219][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.046219][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.046219][ T72] [ 2346.047829][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2346.047829][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.047829][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.047829][ T72] ipv6_find_idev+0x102/0x170 [ 2346.047829][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.047829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.047829][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.047829][ T72] netlink_unicast+0x449/0x710 [ 2346.047829][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.047829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.047829][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.047829][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.047829][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.047829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.047829][ T72] [ 2346.049927][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2346.050281][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2346.050281][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.050281][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.050281][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.050281][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.050281][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.050281][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.050281][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.050281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.050281][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.050281][ T72] netlink_unicast+0x449/0x710 [ 2346.050281][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.050281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.050281][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.050281][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.050281][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.050281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.050281][ T72] [ 2346.052471][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2346.052471][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.052471][ T72] ipv6_find_idev+0x102/0x170 [ 2346.052471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.052471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.052471][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.052471][ T72] netlink_unicast+0x449/0x710 [ 2346.052471][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.052471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.052471][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.052471][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.052471][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.052471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.052471][ T72] [ 2346.054196][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2346.054196][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.054196][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.054196][ T72] ipv6_find_idev+0x102/0x170 [ 2346.054196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.054196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.054196][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.054196][ T72] netlink_unicast+0x449/0x710 [ 2346.054196][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.054196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.054196][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.054196][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.054196][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.054196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.054196][ T72] [ 2346.056128][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2346.056492][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2346.056492][ T72] netdev_get_by_index+0x5e/0x80 [ 2346.056492][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2346.056492][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2346.056492][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2346.056492][ T72] ipv6_add_addr+0x411/0x2000 [ 2346.056492][ T72] inet6_addr_add+0x30e/0xa40 [ 2346.056492][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2346.056492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.056492][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.056492][ T72] netlink_unicast+0x449/0x710 [ 2346.056492][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.056492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.056492][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.056492][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.056492][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.056492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.056492][ T72] [ 2346.058694][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2346.058694][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2346.058694][ T72] ipv6_find_idev+0x102/0x170 [ 2346.058694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.058694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.058694][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.058694][ T72] netlink_unicast+0x449/0x710 [ 2346.058694][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.058694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.058694][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.058694][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.058694][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.058694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.058694][ T72] [ 2346.060481][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2346.060481][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2346.060481][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2346.060481][ T72] ipv6_find_idev+0x102/0x170 [ 2346.060481][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2346.060481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2346.060481][ T72] netlink_rcv_skb+0x130/0x360 [ 2346.060481][ T72] netlink_unicast+0x449/0x710 [ 2346.060481][ T72] netlink_sendmsg+0x723/0xbe0 [ 2346.060481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2346.060481][ T72] ___sys_sendmsg+0xee/0x170 [ 2346.060481][ T72] __sys_sendmsg+0xcd/0x170 [ 2346.060481][ T72] do_syscall_64+0xc6/0x1e0 [ 2346.060481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2346.060481][ T72] [ 2356.302878][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2356.303330][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2356.303330][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.303330][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.303330][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.303330][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.303330][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.303330][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.303330][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.303330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.303330][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.303330][ T72] netlink_unicast+0x449/0x710 [ 2356.303330][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.303330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.303330][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.303330][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.303330][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.303330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.303330][ T72] [ 2356.305351][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2356.305351][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.305351][ T72] ipv6_find_idev+0x102/0x170 [ 2356.305351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.305351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.305351][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.305351][ T72] netlink_unicast+0x449/0x710 [ 2356.305351][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.305351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.305351][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.305351][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.305351][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.305351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.305351][ T72] [ 2356.306889][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2356.306889][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.306889][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.306889][ T72] ipv6_find_idev+0x102/0x170 [ 2356.306889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.306889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.306889][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.306889][ T72] netlink_unicast+0x449/0x710 [ 2356.306889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.306889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.306889][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.306889][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.306889][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.306889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.306889][ T72] [ 2356.308597][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2356.308893][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2356.308893][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.308893][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.308893][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.308893][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.308893][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.308893][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.308893][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.308893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.308893][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.308893][ T72] netlink_unicast+0x449/0x710 [ 2356.308893][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.308893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.308893][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.308893][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.308893][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.308893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.308893][ T72] [ 2356.310909][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2356.310909][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.310909][ T72] ipv6_find_idev+0x102/0x170 [ 2356.310909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.310909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.310909][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.310909][ T72] netlink_unicast+0x449/0x710 [ 2356.310909][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.310909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.310909][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.310909][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.310909][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.310909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.310909][ T72] [ 2356.312473][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2356.312473][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.312473][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.312473][ T72] ipv6_find_idev+0x102/0x170 [ 2356.312473][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.312473][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.312473][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.312473][ T72] netlink_unicast+0x449/0x710 [ 2356.312473][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.312473][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.312473][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.312473][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.312473][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.312473][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.312473][ T72] [ 2356.314164][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2356.314453][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2356.314453][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.314453][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.314453][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.314453][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.314453][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.314453][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.314453][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.314453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.314453][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.314453][ T72] netlink_unicast+0x449/0x710 [ 2356.314453][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.314453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.314453][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.314453][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.314453][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.314453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.314453][ T72] [ 2356.316447][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2356.316447][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.316447][ T72] ipv6_find_idev+0x102/0x170 [ 2356.316447][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.316447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.316447][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.316447][ T72] netlink_unicast+0x449/0x710 [ 2356.316447][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.316447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.316447][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.316447][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.316447][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.316447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.316447][ T72] [ 2356.317978][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2356.317978][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.317978][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.317978][ T72] ipv6_find_idev+0x102/0x170 [ 2356.317978][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.317978][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.317978][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.317978][ T72] netlink_unicast+0x449/0x710 [ 2356.317978][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.317978][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.317978][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.317978][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.317978][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.317978][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.317978][ T72] [ 2356.319665][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2356.320476][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2356.320476][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.320476][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.320476][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.320476][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.320476][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.320476][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.320476][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.320476][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.320476][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.320476][ T72] netlink_unicast+0x449/0x710 [ 2356.320476][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.320476][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.320476][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.320476][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.320476][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.320476][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.320476][ T72] [ 2356.322466][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2356.322466][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.322466][ T72] ipv6_find_idev+0x102/0x170 [ 2356.322466][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.322466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.322466][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.322466][ T72] netlink_unicast+0x449/0x710 [ 2356.322466][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.322466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.322466][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.322466][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.322466][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.322466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.322466][ T72] [ 2356.324011][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2356.324011][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.324011][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.324011][ T72] ipv6_find_idev+0x102/0x170 [ 2356.324011][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.324011][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.324011][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.324011][ T72] netlink_unicast+0x449/0x710 [ 2356.324011][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.324011][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.324011][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.324011][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.324011][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.324011][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.324011][ T72] [ 2356.325742][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2356.326050][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2356.326050][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.326050][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.326050][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.326050][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.326050][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.326050][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.326050][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.326050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.326050][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.326050][ T72] netlink_unicast+0x449/0x710 [ 2356.326050][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.326050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.326050][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.326050][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.326050][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.326050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.326050][ T72] [ 2356.328044][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2356.328044][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.328044][ T72] ipv6_find_idev+0x102/0x170 [ 2356.328044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.328044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.328044][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.328044][ T72] netlink_unicast+0x449/0x710 [ 2356.328044][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.328044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.328044][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.328044][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.328044][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.328044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.328044][ T72] [ 2356.329591][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2356.329591][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.329591][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.329591][ T72] ipv6_find_idev+0x102/0x170 [ 2356.329591][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.329591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.329591][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.329591][ T72] netlink_unicast+0x449/0x710 [ 2356.329591][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.329591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.329591][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.329591][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.329591][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.329591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.329591][ T72] [ 2356.331339][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2356.331651][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2356.331651][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.331651][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.331651][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.331651][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.331651][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.331651][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.331651][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.331651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.331651][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.331651][ T72] netlink_unicast+0x449/0x710 [ 2356.331651][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.331651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.331651][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.331651][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.331651][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.331651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.331651][ T72] [ 2356.333721][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2356.333721][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.333721][ T72] ipv6_find_idev+0x102/0x170 [ 2356.333721][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.333721][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.333721][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.333721][ T72] netlink_unicast+0x449/0x710 [ 2356.333721][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.333721][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.333721][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.333721][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.333721][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.333721][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.333721][ T72] [ 2356.335438][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2356.335438][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.335438][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.335438][ T72] ipv6_find_idev+0x102/0x170 [ 2356.335438][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.335438][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.335438][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.335438][ T72] netlink_unicast+0x449/0x710 [ 2356.335438][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.335438][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.335438][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.335438][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.335438][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.335438][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.335438][ T72] [ 2356.337361][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2356.337671][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2356.337671][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.337671][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.337671][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.337671][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.337671][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.337671][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.337671][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.337671][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.337671][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.337671][ T72] netlink_unicast+0x449/0x710 [ 2356.337671][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.337671][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.337671][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.337671][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.337671][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.337671][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.337671][ T72] [ 2356.340426][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2356.340426][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.340426][ T72] ipv6_find_idev+0x102/0x170 [ 2356.340426][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.340426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.340426][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.340426][ T72] netlink_unicast+0x449/0x710 [ 2356.340426][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.340426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.340426][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.340426][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.340426][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.340426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.340426][ T72] [ 2356.342143][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2356.342143][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.342143][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.342143][ T72] ipv6_find_idev+0x102/0x170 [ 2356.342143][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.342143][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.342143][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.342143][ T72] netlink_unicast+0x449/0x710 [ 2356.342143][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.342143][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.342143][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.342143][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.342143][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.342143][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.342143][ T72] [ 2356.344045][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2356.344353][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2356.344353][ T72] netdev_get_by_index+0x5e/0x80 [ 2356.344353][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2356.344353][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2356.344353][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2356.344353][ T72] ipv6_add_addr+0x411/0x2000 [ 2356.344353][ T72] inet6_addr_add+0x30e/0xa40 [ 2356.344353][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2356.344353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.344353][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.344353][ T72] netlink_unicast+0x449/0x710 [ 2356.344353][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.344353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.344353][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.344353][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.344353][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.344353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.344353][ T72] [ 2356.346532][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2356.346532][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2356.346532][ T72] ipv6_find_idev+0x102/0x170 [ 2356.346532][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.346532][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.346532][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.346532][ T72] netlink_unicast+0x449/0x710 [ 2356.346532][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.346532][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.346532][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.346532][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.346532][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.346532][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.346532][ T72] [ 2356.348253][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2356.348253][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2356.348253][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2356.348253][ T72] ipv6_find_idev+0x102/0x170 [ 2356.348253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2356.348253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2356.348253][ T72] netlink_rcv_skb+0x130/0x360 [ 2356.348253][ T72] netlink_unicast+0x449/0x710 [ 2356.348253][ T72] netlink_sendmsg+0x723/0xbe0 [ 2356.348253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2356.348253][ T72] ___sys_sendmsg+0xee/0x170 [ 2356.348253][ T72] __sys_sendmsg+0xcd/0x170 [ 2356.348253][ T72] do_syscall_64+0xc6/0x1e0 [ 2356.348253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2356.348253][ T72] [ 2366.590855][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2366.591300][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2366.591300][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.591300][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.591300][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.591300][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.591300][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.591300][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.591300][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.591300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.591300][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.591300][ T72] netlink_unicast+0x449/0x710 [ 2366.591300][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.591300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.591300][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.591300][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.591300][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.591300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.591300][ T72] [ 2366.593332][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2366.593332][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.593332][ T72] ipv6_find_idev+0x102/0x170 [ 2366.593332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.593332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.593332][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.593332][ T72] netlink_unicast+0x449/0x710 [ 2366.593332][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.593332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.593332][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.593332][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.593332][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.593332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.593332][ T72] [ 2366.594886][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2366.594886][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.594886][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.594886][ T72] ipv6_find_idev+0x102/0x170 [ 2366.594886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.594886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.594886][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.594886][ T72] netlink_unicast+0x449/0x710 [ 2366.594886][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.594886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.594886][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.594886][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.594886][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.594886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.594886][ T72] [ 2366.596629][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2366.596939][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2366.596939][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.596939][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.596939][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.596939][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.596939][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.596939][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.596939][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.596939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.596939][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.596939][ T72] netlink_unicast+0x449/0x710 [ 2366.596939][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.596939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.596939][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.596939][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.596939][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.596939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.596939][ T72] [ 2366.598945][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2366.598945][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.598945][ T72] ipv6_find_idev+0x102/0x170 [ 2366.598945][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.598945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.598945][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.598945][ T72] netlink_unicast+0x449/0x710 [ 2366.598945][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.598945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.598945][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.598945][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.598945][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.598945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.598945][ T72] [ 2366.600504][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2366.600504][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.600504][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.600504][ T72] ipv6_find_idev+0x102/0x170 [ 2366.600504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.600504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.600504][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.600504][ T72] netlink_unicast+0x449/0x710 [ 2366.600504][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.600504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.600504][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.600504][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.600504][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.600504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.600504][ T72] [ 2366.602209][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2366.602483][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2366.602483][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.602483][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.602483][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.602483][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.602483][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.602483][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.602483][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.602483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.602483][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.602483][ T72] netlink_unicast+0x449/0x710 [ 2366.602483][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.602483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.602483][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.602483][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.602483][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.602483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.602483][ T72] [ 2366.604496][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2366.604496][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.604496][ T72] ipv6_find_idev+0x102/0x170 [ 2366.604496][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.604496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.604496][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.604496][ T72] netlink_unicast+0x449/0x710 [ 2366.604496][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.604496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.604496][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.604496][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.604496][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.604496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.604496][ T72] [ 2366.606044][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2366.606044][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.606044][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.606044][ T72] ipv6_find_idev+0x102/0x170 [ 2366.606044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.606044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.606044][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.606044][ T72] netlink_unicast+0x449/0x710 [ 2366.606044][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.606044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.606044][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.606044][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.606044][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.606044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.606044][ T72] [ 2366.607773][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2366.608038][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2366.608038][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.608038][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.608038][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.608038][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.608038][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.608038][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.608038][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.608038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.608038][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.608038][ T72] netlink_unicast+0x449/0x710 [ 2366.608038][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.608038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.608038][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.608038][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.608038][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.608038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.608038][ T72] [ 2366.610053][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2366.610053][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.610053][ T72] ipv6_find_idev+0x102/0x170 [ 2366.610053][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.610053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.610053][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.610053][ T72] netlink_unicast+0x449/0x710 [ 2366.610053][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.610053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.610053][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.610053][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.610053][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.610053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.610053][ T72] [ 2366.611609][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2366.611609][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.611609][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.611609][ T72] ipv6_find_idev+0x102/0x170 [ 2366.611609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.611609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.611609][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.611609][ T72] netlink_unicast+0x449/0x710 [ 2366.611609][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.611609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.611609][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.611609][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.611609][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.611609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.611609][ T72] [ 2366.613705][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2366.614314][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2366.614314][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.614314][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.614314][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.614314][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.614314][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.614314][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.614314][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.614314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.614314][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.614314][ T72] netlink_unicast+0x449/0x710 [ 2366.614314][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.614314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.614314][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.614314][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.614314][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.614314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.614314][ T72] [ 2366.616706][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2366.616706][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.616706][ T72] ipv6_find_idev+0x102/0x170 [ 2366.616706][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.616706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.616706][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.616706][ T72] netlink_unicast+0x449/0x710 [ 2366.616706][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.616706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.616706][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.616706][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.616706][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.616706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.616706][ T72] [ 2366.618242][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2366.618242][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.618242][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.618242][ T72] ipv6_find_idev+0x102/0x170 [ 2366.618242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.618242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.618242][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.618242][ T72] netlink_unicast+0x449/0x710 [ 2366.618242][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.618242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.618242][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.618242][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.618242][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.618242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.618242][ T72] [ 2366.619940][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2366.620211][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2366.620211][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.620211][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.620211][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.620211][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.620211][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.620211][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.620211][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.620211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.620211][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.620211][ T72] netlink_unicast+0x449/0x710 [ 2366.620211][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.620211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.620211][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.620211][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.620211][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.620211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.620211][ T72] [ 2366.622209][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2366.622209][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.622209][ T72] ipv6_find_idev+0x102/0x170 [ 2366.622209][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.622209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.622209][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.622209][ T72] netlink_unicast+0x449/0x710 [ 2366.622209][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.622209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.622209][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.622209][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.622209][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.622209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.622209][ T72] [ 2366.623812][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2366.623812][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.623812][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.623812][ T72] ipv6_find_idev+0x102/0x170 [ 2366.623812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.623812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.623812][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.623812][ T72] netlink_unicast+0x449/0x710 [ 2366.623812][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.623812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.623812][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.623812][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.623812][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.623812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.623812][ T72] [ 2366.625852][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2366.626164][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2366.626164][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.626164][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.626164][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.626164][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.626164][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.626164][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.626164][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.626164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.626164][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.626164][ T72] netlink_unicast+0x449/0x710 [ 2366.626164][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.626164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.626164][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.626164][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.626164][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.626164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.626164][ T72] [ 2366.628342][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2366.628342][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.628342][ T72] ipv6_find_idev+0x102/0x170 [ 2366.628342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.628342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.628342][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.628342][ T72] netlink_unicast+0x449/0x710 [ 2366.628342][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.628342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.628342][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.628342][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.628342][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.628342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.628342][ T72] [ 2366.630065][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2366.630065][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.630065][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.630065][ T72] ipv6_find_idev+0x102/0x170 [ 2366.630065][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.630065][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.630065][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.630065][ T72] netlink_unicast+0x449/0x710 [ 2366.630065][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.630065][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.630065][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.630065][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.630065][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.630065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.630065][ T72] [ 2366.631972][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2366.632285][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2366.632285][ T72] netdev_get_by_index+0x5e/0x80 [ 2366.632285][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2366.632285][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2366.632285][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2366.632285][ T72] ipv6_add_addr+0x411/0x2000 [ 2366.632285][ T72] inet6_addr_add+0x30e/0xa40 [ 2366.632285][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2366.632285][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.632285][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.632285][ T72] netlink_unicast+0x449/0x710 [ 2366.632285][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.632285][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.632285][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.632285][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.632285][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.632285][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.632285][ T72] [ 2366.634469][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2366.634469][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2366.634469][ T72] ipv6_find_idev+0x102/0x170 [ 2366.634469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.634469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.634469][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.634469][ T72] netlink_unicast+0x449/0x710 [ 2366.634469][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.634469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.634469][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.634469][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.634469][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.634469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.634469][ T72] [ 2366.636245][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2366.636245][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2366.636245][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2366.636245][ T72] ipv6_find_idev+0x102/0x170 [ 2366.636245][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2366.636245][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2366.636245][ T72] netlink_rcv_skb+0x130/0x360 [ 2366.636245][ T72] netlink_unicast+0x449/0x710 [ 2366.636245][ T72] netlink_sendmsg+0x723/0xbe0 [ 2366.636245][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2366.636245][ T72] ___sys_sendmsg+0xee/0x170 [ 2366.636245][ T72] __sys_sendmsg+0xcd/0x170 [ 2366.636245][ T72] do_syscall_64+0xc6/0x1e0 [ 2366.636245][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2366.636245][ T72] [ 2376.862868][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2376.863279][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2376.863279][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.863279][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.863279][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.863279][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.863279][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.863279][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.863279][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.863279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.863279][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.863279][ T72] netlink_unicast+0x449/0x710 [ 2376.863279][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.863279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.863279][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.863279][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.863279][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.863279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.863279][ T72] [ 2376.865300][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2376.865300][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.865300][ T72] ipv6_find_idev+0x102/0x170 [ 2376.865300][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.865300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.865300][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.865300][ T72] netlink_unicast+0x449/0x710 [ 2376.865300][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.865300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.865300][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.865300][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.865300][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.865300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.865300][ T72] [ 2376.866820][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2376.866820][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.866820][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.866820][ T72] ipv6_find_idev+0x102/0x170 [ 2376.866820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.866820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.866820][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.866820][ T72] netlink_unicast+0x449/0x710 [ 2376.866820][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.866820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.866820][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.866820][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.866820][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.866820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.866820][ T72] [ 2376.868514][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2376.868907][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2376.868907][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.868907][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.868907][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.868907][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.868907][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.868907][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.868907][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.868907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.868907][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.868907][ T72] netlink_unicast+0x449/0x710 [ 2376.868907][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.868907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.868907][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.868907][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.868907][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.868907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.868907][ T72] [ 2376.870873][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2376.870873][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.870873][ T72] ipv6_find_idev+0x102/0x170 [ 2376.870873][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.870873][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.870873][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.870873][ T72] netlink_unicast+0x449/0x710 [ 2376.870873][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.870873][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.870873][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.870873][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.870873][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.870873][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.870873][ T72] [ 2376.872442][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2376.872442][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.872442][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.872442][ T72] ipv6_find_idev+0x102/0x170 [ 2376.872442][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.872442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.872442][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.872442][ T72] netlink_unicast+0x449/0x710 [ 2376.872442][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.872442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.872442][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.872442][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.872442][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.872442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.872442][ T72] [ 2376.874108][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2376.874390][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2376.874390][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.874390][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.874390][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.874390][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.874390][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.874390][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.874390][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.874390][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.874390][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.874390][ T72] netlink_unicast+0x449/0x710 [ 2376.874390][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.874390][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.874390][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.874390][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.874390][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.874390][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.874390][ T72] [ 2376.876429][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2376.876429][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.876429][ T72] ipv6_find_idev+0x102/0x170 [ 2376.876429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.876429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.876429][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.876429][ T72] netlink_unicast+0x449/0x710 [ 2376.876429][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.876429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.876429][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.876429][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.876429][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.876429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.876429][ T72] [ 2376.877977][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2376.877977][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.877977][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.877977][ T72] ipv6_find_idev+0x102/0x170 [ 2376.877977][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.877977][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.877977][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.877977][ T72] netlink_unicast+0x449/0x710 [ 2376.877977][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.877977][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.877977][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.877977][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.877977][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.877977][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.877977][ T72] [ 2376.879691][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2376.880424][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2376.880424][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.880424][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.880424][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.880424][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.880424][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.880424][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.880424][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.880424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.880424][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.880424][ T72] netlink_unicast+0x449/0x710 [ 2376.880424][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.880424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.880424][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.880424][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.880424][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.880424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.880424][ T72] [ 2376.882420][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2376.882420][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.882420][ T72] ipv6_find_idev+0x102/0x170 [ 2376.882420][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.882420][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.882420][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.882420][ T72] netlink_unicast+0x449/0x710 [ 2376.882420][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.882420][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.882420][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.882420][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.882420][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.882420][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.882420][ T72] [ 2376.883980][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2376.883980][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.883980][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.883980][ T72] ipv6_find_idev+0x102/0x170 [ 2376.883980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.883980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.883980][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.883980][ T72] netlink_unicast+0x449/0x710 [ 2376.883980][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.883980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.883980][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.883980][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.883980][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.883980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.883980][ T72] [ 2376.885752][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2376.886033][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2376.886033][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.886033][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.886033][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.886033][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.886033][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.886033][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.886033][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.886033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.886033][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.886033][ T72] netlink_unicast+0x449/0x710 [ 2376.886033][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.886033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.886033][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.886033][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.886033][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.886033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.886033][ T72] [ 2376.888025][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2376.888025][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.888025][ T72] ipv6_find_idev+0x102/0x170 [ 2376.888025][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.888025][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.888025][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.888025][ T72] netlink_unicast+0x449/0x710 [ 2376.888025][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.888025][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.888025][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.888025][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.888025][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.888025][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.888025][ T72] [ 2376.889552][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2376.889552][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.889552][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.889552][ T72] ipv6_find_idev+0x102/0x170 [ 2376.889552][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.889552][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.889552][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.889552][ T72] netlink_unicast+0x449/0x710 [ 2376.889552][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.889552][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.889552][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.889552][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.889552][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.889552][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.889552][ T72] [ 2376.891290][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2376.891550][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2376.891550][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.891550][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.891550][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.891550][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.891550][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.891550][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.891550][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.891550][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.891550][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.891550][ T72] netlink_unicast+0x449/0x710 [ 2376.891550][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.891550][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.891550][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.891550][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.891550][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.891550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.891550][ T72] [ 2376.893672][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2376.893672][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.893672][ T72] ipv6_find_idev+0x102/0x170 [ 2376.893672][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.893672][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.893672][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.893672][ T72] netlink_unicast+0x449/0x710 [ 2376.893672][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.893672][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.893672][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.893672][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.893672][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.893672][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.893672][ T72] [ 2376.895390][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2376.895390][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.895390][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.895390][ T72] ipv6_find_idev+0x102/0x170 [ 2376.895390][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.895390][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.895390][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.895390][ T72] netlink_unicast+0x449/0x710 [ 2376.895390][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.895390][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.895390][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.895390][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.895390][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.895390][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.895390][ T72] [ 2376.897354][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2376.897621][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2376.897621][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.897621][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.897621][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.897621][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.897621][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.897621][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.897621][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.897621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.897621][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.897621][ T72] netlink_unicast+0x449/0x710 [ 2376.897621][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.897621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.897621][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.897621][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.897621][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.897621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.897621][ T72] [ 2376.899845][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2376.899845][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.899845][ T72] ipv6_find_idev+0x102/0x170 [ 2376.899845][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.899845][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.899845][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.899845][ T72] netlink_unicast+0x449/0x710 [ 2376.899845][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.899845][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.899845][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.899845][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.899845][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.899845][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.899845][ T72] [ 2376.901536][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2376.901536][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.901536][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.901536][ T72] ipv6_find_idev+0x102/0x170 [ 2376.901536][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.901536][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.901536][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.901536][ T72] netlink_unicast+0x449/0x710 [ 2376.901536][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.901536][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.901536][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.901536][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.901536][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.901536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.901536][ T72] [ 2376.903418][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2376.903697][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2376.903697][ T72] netdev_get_by_index+0x5e/0x80 [ 2376.903697][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2376.903697][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2376.903697][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2376.903697][ T72] ipv6_add_addr+0x411/0x2000 [ 2376.903697][ T72] inet6_addr_add+0x30e/0xa40 [ 2376.903697][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2376.903697][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.903697][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.903697][ T72] netlink_unicast+0x449/0x710 [ 2376.903697][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.903697][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.903697][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.903697][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.903697][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.903697][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.903697][ T72] [ 2376.905897][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2376.905897][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2376.905897][ T72] ipv6_find_idev+0x102/0x170 [ 2376.905897][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.905897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.905897][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.905897][ T72] netlink_unicast+0x449/0x710 [ 2376.905897][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.905897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.905897][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.905897][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.905897][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.905897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.905897][ T72] [ 2376.907661][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2376.907661][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2376.907661][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2376.907661][ T72] ipv6_find_idev+0x102/0x170 [ 2376.907661][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2376.907661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2376.907661][ T72] netlink_rcv_skb+0x130/0x360 [ 2376.907661][ T72] netlink_unicast+0x449/0x710 [ 2376.907661][ T72] netlink_sendmsg+0x723/0xbe0 [ 2376.907661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2376.907661][ T72] ___sys_sendmsg+0xee/0x170 [ 2376.907661][ T72] __sys_sendmsg+0xcd/0x170 [ 2376.907661][ T72] do_syscall_64+0xc6/0x1e0 [ 2376.907661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2376.907661][ T72] [ 2387.158813][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2387.159250][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2387.159250][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.159250][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.159250][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.159250][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.159250][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.159250][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.159250][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.159250][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.159250][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.159250][ T72] netlink_unicast+0x449/0x710 [ 2387.159250][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.159250][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.159250][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.159250][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.159250][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.159250][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.159250][ T72] [ 2387.161419][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2387.161419][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.161419][ T72] ipv6_find_idev+0x102/0x170 [ 2387.161419][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.161419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.161419][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.161419][ T72] netlink_unicast+0x449/0x710 [ 2387.161419][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.161419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.161419][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.161419][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.161419][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.161419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.161419][ T72] [ 2387.163134][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2387.163134][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.163134][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.163134][ T72] ipv6_find_idev+0x102/0x170 [ 2387.163134][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.163134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.163134][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.163134][ T72] netlink_unicast+0x449/0x710 [ 2387.163134][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.163134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.163134][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.163134][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.163134][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.163134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.163134][ T72] [ 2387.165012][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2387.165311][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2387.165311][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.165311][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.165311][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.165311][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.165311][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.165311][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.165311][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.165311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.165311][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.165311][ T72] netlink_unicast+0x449/0x710 [ 2387.165311][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.165311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.165311][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.165311][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.165311][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.165311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.165311][ T72] [ 2387.167499][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2387.167499][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.167499][ T72] ipv6_find_idev+0x102/0x170 [ 2387.167499][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.167499][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.167499][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.167499][ T72] netlink_unicast+0x449/0x710 [ 2387.167499][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.167499][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.167499][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.167499][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.167499][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.167499][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.167499][ T72] [ 2387.169199][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2387.169199][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.169199][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.169199][ T72] ipv6_find_idev+0x102/0x170 [ 2387.169199][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.169199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.169199][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.169199][ T72] netlink_unicast+0x449/0x710 [ 2387.169199][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.169199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.169199][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.169199][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.169199][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.169199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.169199][ T72] [ 2387.171078][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2387.171372][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2387.171372][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.171372][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.171372][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.171372][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.171372][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.171372][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.171372][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.171372][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.171372][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.171372][ T72] netlink_unicast+0x449/0x710 [ 2387.171372][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.171372][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.171372][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.171372][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.171372][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.171372][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.171372][ T72] [ 2387.173558][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2387.173558][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.173558][ T72] ipv6_find_idev+0x102/0x170 [ 2387.173558][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.173558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.173558][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.173558][ T72] netlink_unicast+0x449/0x710 [ 2387.173558][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.173558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.173558][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.173558][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.173558][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.173558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.173558][ T72] [ 2387.175125][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2387.175125][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.175125][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.175125][ T72] ipv6_find_idev+0x102/0x170 [ 2387.175125][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.175125][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.175125][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.175125][ T72] netlink_unicast+0x449/0x710 [ 2387.175125][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.175125][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.175125][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.175125][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.175125][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.175125][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.175125][ T72] [ 2387.176853][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2387.177121][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2387.177121][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.177121][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.177121][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.177121][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.177121][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.177121][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.177121][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.177121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.177121][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.177121][ T72] netlink_unicast+0x449/0x710 [ 2387.177121][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.177121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.177121][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.177121][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.177121][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.177121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.177121][ T72] [ 2387.179179][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2387.179179][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.179179][ T72] ipv6_find_idev+0x102/0x170 [ 2387.179179][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.179179][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.179179][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.179179][ T72] netlink_unicast+0x449/0x710 [ 2387.179179][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.179179][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.179179][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.179179][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.179179][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.179179][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.179179][ T72] [ 2387.180800][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2387.180800][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.180800][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.180800][ T72] ipv6_find_idev+0x102/0x170 [ 2387.180800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.180800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.180800][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.180800][ T72] netlink_unicast+0x449/0x710 [ 2387.180800][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.180800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.180800][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.180800][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.180800][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.180800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.180800][ T72] [ 2387.182918][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2387.183522][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2387.183522][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.183522][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.183522][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.183522][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.183522][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.183522][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.183522][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.183522][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.183522][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.183522][ T72] netlink_unicast+0x449/0x710 [ 2387.183522][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.183522][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.183522][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.183522][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.183522][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.183522][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.183522][ T72] [ 2387.185532][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2387.185532][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.185532][ T72] ipv6_find_idev+0x102/0x170 [ 2387.185532][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.185532][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.185532][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.185532][ T72] netlink_unicast+0x449/0x710 [ 2387.185532][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.185532][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.185532][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.185532][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.185532][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.185532][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.185532][ T72] [ 2387.187140][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2387.187140][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.187140][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.187140][ T72] ipv6_find_idev+0x102/0x170 [ 2387.187140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.187140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.187140][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.187140][ T72] netlink_unicast+0x449/0x710 [ 2387.187140][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.187140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.187140][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.187140][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.187140][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.187140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.187140][ T72] [ 2387.188881][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2387.189177][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2387.189177][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.189177][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.189177][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.189177][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.189177][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.189177][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.189177][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.189177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.189177][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.189177][ T72] netlink_unicast+0x449/0x710 [ 2387.189177][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.189177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.189177][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.189177][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.189177][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.189177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.189177][ T72] [ 2387.191196][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2387.191196][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.191196][ T72] ipv6_find_idev+0x102/0x170 [ 2387.191196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.191196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.191196][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.191196][ T72] netlink_unicast+0x449/0x710 [ 2387.191196][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.191196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.191196][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.191196][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.191196][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.191196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.191196][ T72] [ 2387.192804][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2387.192804][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.192804][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.192804][ T72] ipv6_find_idev+0x102/0x170 [ 2387.192804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.192804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.192804][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.192804][ T72] netlink_unicast+0x449/0x710 [ 2387.192804][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.192804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.192804][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.192804][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.192804][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.192804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.192804][ T72] [ 2387.194874][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2387.195182][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2387.195182][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.195182][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.195182][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.195182][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.195182][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.195182][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.195182][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.195182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.195182][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.195182][ T72] netlink_unicast+0x449/0x710 [ 2387.195182][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.195182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.195182][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.195182][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.195182][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.195182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.195182][ T72] [ 2387.197379][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2387.197379][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.197379][ T72] ipv6_find_idev+0x102/0x170 [ 2387.197379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.197379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.197379][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.197379][ T72] netlink_unicast+0x449/0x710 [ 2387.197379][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.197379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.197379][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.197379][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.197379][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.197379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.197379][ T72] [ 2387.199117][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2387.199117][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.199117][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.199117][ T72] ipv6_find_idev+0x102/0x170 [ 2387.199117][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.199117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.199117][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.199117][ T72] netlink_unicast+0x449/0x710 [ 2387.199117][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.199117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.199117][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.199117][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.199117][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.199117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.199117][ T72] [ 2387.201066][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2387.201387][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2387.201387][ T72] netdev_get_by_index+0x5e/0x80 [ 2387.201387][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2387.201387][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2387.201387][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2387.201387][ T72] ipv6_add_addr+0x411/0x2000 [ 2387.201387][ T72] inet6_addr_add+0x30e/0xa40 [ 2387.201387][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2387.201387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.201387][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.201387][ T72] netlink_unicast+0x449/0x710 [ 2387.201387][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.201387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.201387][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.201387][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.201387][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.201387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.201387][ T72] [ 2387.203567][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2387.203567][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2387.203567][ T72] ipv6_find_idev+0x102/0x170 [ 2387.203567][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.203567][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.203567][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.203567][ T72] netlink_unicast+0x449/0x710 [ 2387.203567][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.203567][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.203567][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.203567][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.203567][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.203567][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.203567][ T72] [ 2387.205364][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2387.205364][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2387.205364][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2387.205364][ T72] ipv6_find_idev+0x102/0x170 [ 2387.205364][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2387.205364][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2387.205364][ T72] netlink_rcv_skb+0x130/0x360 [ 2387.205364][ T72] netlink_unicast+0x449/0x710 [ 2387.205364][ T72] netlink_sendmsg+0x723/0xbe0 [ 2387.205364][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2387.205364][ T72] ___sys_sendmsg+0xee/0x170 [ 2387.205364][ T72] __sys_sendmsg+0xcd/0x170 [ 2387.205364][ T72] do_syscall_64+0xc6/0x1e0 [ 2387.205364][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2387.205364][ T72] [ 2397.462924][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2397.463374][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2397.463374][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.463374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.463374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.463374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.463374][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.463374][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.463374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.463374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.463374][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.463374][ T72] netlink_unicast+0x449/0x710 [ 2397.463374][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.463374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.463374][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.463374][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.463374][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.463374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.463374][ T72] [ 2397.465550][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2397.465550][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.465550][ T72] ipv6_find_idev+0x102/0x170 [ 2397.465550][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.465550][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.465550][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.465550][ T72] netlink_unicast+0x449/0x710 [ 2397.465550][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.465550][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.465550][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.465550][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.465550][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.465550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.465550][ T72] [ 2397.467220][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2397.467220][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.467220][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.467220][ T72] ipv6_find_idev+0x102/0x170 [ 2397.467220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.467220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.467220][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.467220][ T72] netlink_unicast+0x449/0x710 [ 2397.467220][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.467220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.467220][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.467220][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.467220][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.467220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.467220][ T72] [ 2397.469046][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2397.469351][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2397.469351][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.469351][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.469351][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.469351][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.469351][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.469351][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.469351][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.469351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.469351][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.469351][ T72] netlink_unicast+0x449/0x710 [ 2397.469351][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.469351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.469351][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.469351][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.469351][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.469351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.469351][ T72] [ 2397.471525][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2397.471525][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.471525][ T72] ipv6_find_idev+0x102/0x170 [ 2397.471525][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.471525][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.471525][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.471525][ T72] netlink_unicast+0x449/0x710 [ 2397.471525][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.471525][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.471525][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.471525][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.471525][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.471525][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.471525][ T72] [ 2397.473197][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2397.473197][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.473197][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.473197][ T72] ipv6_find_idev+0x102/0x170 [ 2397.473197][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.473197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.473197][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.473197][ T72] netlink_unicast+0x449/0x710 [ 2397.473197][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.473197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.473197][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.473197][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.473197][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.473197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.473197][ T72] [ 2397.475013][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2397.475290][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2397.475290][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.475290][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.475290][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.475290][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.475290][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.475290][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.475290][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.475290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.475290][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.475290][ T72] netlink_unicast+0x449/0x710 [ 2397.475290][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.475290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.475290][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.475290][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.475290][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.475290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.475290][ T72] [ 2397.477407][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2397.477407][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.477407][ T72] ipv6_find_idev+0x102/0x170 [ 2397.477407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.477407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.477407][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.477407][ T72] netlink_unicast+0x449/0x710 [ 2397.477407][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.477407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.477407][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.477407][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.477407][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.477407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.477407][ T72] [ 2397.479052][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2397.479052][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.479052][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.479052][ T72] ipv6_find_idev+0x102/0x170 [ 2397.479052][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.479052][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.479052][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.479052][ T72] netlink_unicast+0x449/0x710 [ 2397.479052][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.479052][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.479052][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.479052][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.479052][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.479052][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.479052][ T72] [ 2397.480870][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2397.481152][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2397.481152][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.481152][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.481152][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.481152][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.481152][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.481152][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.481152][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.481152][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.481152][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.481152][ T72] netlink_unicast+0x449/0x710 [ 2397.481152][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.481152][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.481152][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.481152][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.481152][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.481152][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.481152][ T72] [ 2397.483317][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2397.483317][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.483317][ T72] ipv6_find_idev+0x102/0x170 [ 2397.483317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.483317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.483317][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.483317][ T72] netlink_unicast+0x449/0x710 [ 2397.483317][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.483317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.483317][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.483317][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.483317][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.483317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.483317][ T72] [ 2397.484973][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2397.484973][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.484973][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.484973][ T72] ipv6_find_idev+0x102/0x170 [ 2397.484973][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.484973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.484973][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.484973][ T72] netlink_unicast+0x449/0x710 [ 2397.484973][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.484973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.484973][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.484973][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.484973][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.484973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.484973][ T72] [ 2397.487182][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2397.487466][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2397.487466][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.487466][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.487466][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.487466][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.487466][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.487466][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.487466][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.487466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.487466][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.487466][ T72] netlink_unicast+0x449/0x710 [ 2397.487466][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.487466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.487466][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.487466][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.487466][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.487466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.487466][ T72] [ 2397.489608][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2397.489608][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.489608][ T72] ipv6_find_idev+0x102/0x170 [ 2397.489608][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.489608][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.489608][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.489608][ T72] netlink_unicast+0x449/0x710 [ 2397.489608][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.489608][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.489608][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.489608][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.489608][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.489608][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.489608][ T72] [ 2397.491272][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2397.491272][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.491272][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.491272][ T72] ipv6_find_idev+0x102/0x170 [ 2397.491272][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.491272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.491272][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.491272][ T72] netlink_unicast+0x449/0x710 [ 2397.491272][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.491272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.491272][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.491272][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.491272][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.491272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.491272][ T72] [ 2397.493123][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2397.493414][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2397.493414][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.493414][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.493414][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.493414][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.493414][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.493414][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.493414][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.493414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.493414][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.493414][ T72] netlink_unicast+0x449/0x710 [ 2397.493414][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.493414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.493414][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.493414][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.493414][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.493414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.493414][ T72] [ 2397.495748][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2397.495748][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.495748][ T72] ipv6_find_idev+0x102/0x170 [ 2397.495748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.495748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.495748][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.495748][ T72] netlink_unicast+0x449/0x710 [ 2397.495748][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.495748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.495748][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.495748][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.495748][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.495748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.495748][ T72] [ 2397.497570][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2397.497570][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.497570][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.497570][ T72] ipv6_find_idev+0x102/0x170 [ 2397.497570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.497570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.497570][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.497570][ T72] netlink_unicast+0x449/0x710 [ 2397.497570][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.497570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.497570][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.497570][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.497570][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.497570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.497570][ T72] [ 2397.499630][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2397.499968][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2397.499968][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.499968][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.499968][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.499968][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.499968][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.499968][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.499968][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.499968][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.499968][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.499968][ T72] netlink_unicast+0x449/0x710 [ 2397.499968][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.499968][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.499968][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.499968][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.499968][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.499968][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.499968][ T72] [ 2397.502303][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2397.502303][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.502303][ T72] ipv6_find_idev+0x102/0x170 [ 2397.502303][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.502303][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.502303][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.502303][ T72] netlink_unicast+0x449/0x710 [ 2397.502303][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.502303][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.502303][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.502303][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.502303][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.502303][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.502303][ T72] [ 2397.504149][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2397.504149][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.504149][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.504149][ T72] ipv6_find_idev+0x102/0x170 [ 2397.504149][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.504149][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.504149][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.504149][ T72] netlink_unicast+0x449/0x710 [ 2397.504149][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.504149][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.504149][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.504149][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.504149][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.504149][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.504149][ T72] [ 2397.506175][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2397.506463][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2397.506463][ T72] netdev_get_by_index+0x5e/0x80 [ 2397.506463][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2397.506463][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2397.506463][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2397.506463][ T72] ipv6_add_addr+0x411/0x2000 [ 2397.506463][ T72] inet6_addr_add+0x30e/0xa40 [ 2397.506463][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2397.506463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.506463][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.506463][ T72] netlink_unicast+0x449/0x710 [ 2397.506463][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.506463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.506463][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.506463][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.506463][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.506463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.506463][ T72] [ 2397.508858][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2397.508858][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2397.508858][ T72] ipv6_find_idev+0x102/0x170 [ 2397.508858][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.508858][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.508858][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.508858][ T72] netlink_unicast+0x449/0x710 [ 2397.508858][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.508858][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.508858][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.508858][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.508858][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.508858][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.508858][ T72] [ 2397.510755][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2397.510755][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2397.510755][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2397.510755][ T72] ipv6_find_idev+0x102/0x170 [ 2397.510755][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2397.510755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2397.510755][ T72] netlink_rcv_skb+0x130/0x360 [ 2397.510755][ T72] netlink_unicast+0x449/0x710 [ 2397.510755][ T72] netlink_sendmsg+0x723/0xbe0 [ 2397.510755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2397.510755][ T72] ___sys_sendmsg+0xee/0x170 [ 2397.510755][ T72] __sys_sendmsg+0xcd/0x170 [ 2397.510755][ T72] do_syscall_64+0xc6/0x1e0 [ 2397.510755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2397.510755][ T72] [ 2407.766806][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2407.767314][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2407.767314][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.767314][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.767314][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.767314][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.767314][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.767314][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.767314][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.767314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.767314][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.767314][ T72] netlink_unicast+0x449/0x710 [ 2407.767314][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.767314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.767314][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.767314][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.767314][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.767314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.767314][ T72] [ 2407.769475][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2407.769475][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.769475][ T72] ipv6_find_idev+0x102/0x170 [ 2407.769475][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.769475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.769475][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.769475][ T72] netlink_unicast+0x449/0x710 [ 2407.769475][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.769475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.769475][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.769475][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.769475][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.769475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.769475][ T72] [ 2407.771030][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2407.771030][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.771030][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.771030][ T72] ipv6_find_idev+0x102/0x170 [ 2407.771030][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.771030][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.771030][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.771030][ T72] netlink_unicast+0x449/0x710 [ 2407.771030][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.771030][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.771030][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.771030][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.771030][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.771030][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.771030][ T72] [ 2407.772769][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2407.773051][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2407.773051][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.773051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.773051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.773051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.773051][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.773051][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.773051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.773051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.773051][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.773051][ T72] netlink_unicast+0x449/0x710 [ 2407.773051][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.773051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.773051][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.773051][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.773051][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.773051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.773051][ T72] [ 2407.775059][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2407.775059][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.775059][ T72] ipv6_find_idev+0x102/0x170 [ 2407.775059][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.775059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.775059][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.775059][ T72] netlink_unicast+0x449/0x710 [ 2407.775059][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.775059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.775059][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.775059][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.775059][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.775059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.775059][ T72] [ 2407.776615][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2407.776615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.776615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.776615][ T72] ipv6_find_idev+0x102/0x170 [ 2407.776615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.776615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.776615][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.776615][ T72] netlink_unicast+0x449/0x710 [ 2407.776615][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.776615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.776615][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.776615][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.776615][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.776615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.776615][ T72] [ 2407.778318][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2407.778591][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2407.778591][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.778591][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.778591][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.778591][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.778591][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.778591][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.778591][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.778591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.778591][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.778591][ T72] netlink_unicast+0x449/0x710 [ 2407.778591][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.778591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.778591][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.778591][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.778591][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.778591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.778591][ T72] [ 2407.780585][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2407.780585][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.780585][ T72] ipv6_find_idev+0x102/0x170 [ 2407.780585][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.780585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.780585][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.780585][ T72] netlink_unicast+0x449/0x710 [ 2407.780585][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.780585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.780585][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.780585][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.780585][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.780585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.780585][ T72] [ 2407.782116][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2407.782116][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.782116][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.782116][ T72] ipv6_find_idev+0x102/0x170 [ 2407.782116][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.782116][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.782116][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.782116][ T72] netlink_unicast+0x449/0x710 [ 2407.782116][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.782116][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.782116][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.782116][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.782116][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.782116][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.782116][ T72] [ 2407.783799][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2407.784074][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2407.784074][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.784074][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.784074][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.784074][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.784074][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.784074][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.784074][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.784074][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.784074][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.784074][ T72] netlink_unicast+0x449/0x710 [ 2407.784074][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.784074][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.784074][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.784074][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.784074][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.784074][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.784074][ T72] [ 2407.786089][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2407.786089][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.786089][ T72] ipv6_find_idev+0x102/0x170 [ 2407.786089][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.786089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.786089][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.786089][ T72] netlink_unicast+0x449/0x710 [ 2407.786089][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.786089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.786089][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.786089][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.786089][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.786089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.786089][ T72] [ 2407.787634][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2407.787634][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.787634][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.787634][ T72] ipv6_find_idev+0x102/0x170 [ 2407.787634][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.787634][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.787634][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.787634][ T72] netlink_unicast+0x449/0x710 [ 2407.787634][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.787634][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.787634][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.787634][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.787634][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.787634][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.787634][ T72] [ 2407.789756][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2407.790359][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2407.790359][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.790359][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.790359][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.790359][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.790359][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.790359][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.790359][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.790359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.790359][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.790359][ T72] netlink_unicast+0x449/0x710 [ 2407.790359][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.790359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.790359][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.790359][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.790359][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.790359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.790359][ T72] [ 2407.792353][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2407.792353][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.792353][ T72] ipv6_find_idev+0x102/0x170 [ 2407.792353][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.792353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.792353][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.792353][ T72] netlink_unicast+0x449/0x710 [ 2407.792353][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.792353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.792353][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.792353][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.792353][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.792353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.792353][ T72] [ 2407.793942][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2407.793942][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.793942][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.793942][ T72] ipv6_find_idev+0x102/0x170 [ 2407.793942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.793942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.793942][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.793942][ T72] netlink_unicast+0x449/0x710 [ 2407.793942][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.793942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.793942][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.793942][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.793942][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.793942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.793942][ T72] [ 2407.795676][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2407.796007][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2407.796007][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.796007][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.796007][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.796007][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.796007][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.796007][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.796007][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.796007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.796007][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.796007][ T72] netlink_unicast+0x449/0x710 [ 2407.796007][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.796007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.796007][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.796007][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.796007][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.796007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.796007][ T72] [ 2407.798001][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2407.798001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.798001][ T72] ipv6_find_idev+0x102/0x170 [ 2407.798001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.798001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.798001][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.798001][ T72] netlink_unicast+0x449/0x710 [ 2407.798001][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.798001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.798001][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.798001][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.798001][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.798001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.798001][ T72] [ 2407.799596][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2407.799596][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.799596][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.799596][ T72] ipv6_find_idev+0x102/0x170 [ 2407.799596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.799596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.799596][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.799596][ T72] netlink_unicast+0x449/0x710 [ 2407.799596][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.799596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.799596][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.799596][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.799596][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.799596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.799596][ T72] [ 2407.801569][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2407.801892][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2407.801892][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.801892][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.801892][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.801892][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.801892][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.801892][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.801892][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.801892][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.801892][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.801892][ T72] netlink_unicast+0x449/0x710 [ 2407.801892][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.801892][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.801892][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.801892][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.801892][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.801892][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.801892][ T72] [ 2407.804082][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2407.804082][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.804082][ T72] ipv6_find_idev+0x102/0x170 [ 2407.804082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.804082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.804082][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.804082][ T72] netlink_unicast+0x449/0x710 [ 2407.804082][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.804082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.804082][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.804082][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.804082][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.804082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.804082][ T72] [ 2407.805803][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2407.805803][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.805803][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.805803][ T72] ipv6_find_idev+0x102/0x170 [ 2407.805803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.805803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.805803][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.805803][ T72] netlink_unicast+0x449/0x710 [ 2407.805803][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.805803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.805803][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.805803][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.805803][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.805803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.805803][ T72] [ 2407.807722][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2407.808047][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2407.808047][ T72] netdev_get_by_index+0x5e/0x80 [ 2407.808047][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2407.808047][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2407.808047][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2407.808047][ T72] ipv6_add_addr+0x411/0x2000 [ 2407.808047][ T72] inet6_addr_add+0x30e/0xa40 [ 2407.808047][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2407.808047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.808047][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.808047][ T72] netlink_unicast+0x449/0x710 [ 2407.808047][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.808047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.808047][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.808047][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.808047][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.808047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.808047][ T72] [ 2407.810259][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2407.810259][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2407.810259][ T72] ipv6_find_idev+0x102/0x170 [ 2407.810259][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.810259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.810259][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.810259][ T72] netlink_unicast+0x449/0x710 [ 2407.810259][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.810259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.810259][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.810259][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.810259][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.810259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.810259][ T72] [ 2407.811981][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2407.811981][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2407.811981][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2407.811981][ T72] ipv6_find_idev+0x102/0x170 [ 2407.811981][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2407.811981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2407.811981][ T72] netlink_rcv_skb+0x130/0x360 [ 2407.811981][ T72] netlink_unicast+0x449/0x710 [ 2407.811981][ T72] netlink_sendmsg+0x723/0xbe0 [ 2407.811981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2407.811981][ T72] ___sys_sendmsg+0xee/0x170 [ 2407.811981][ T72] __sys_sendmsg+0xcd/0x170 [ 2407.811981][ T72] do_syscall_64+0xc6/0x1e0 [ 2407.811981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2407.811981][ T72] [ 2417.814870][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2417.815336][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2417.815336][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.815336][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.815336][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.815336][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.815336][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.815336][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.815336][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.815336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.815336][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.815336][ T72] netlink_unicast+0x449/0x710 [ 2417.815336][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.815336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.815336][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.815336][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.815336][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.815336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.815336][ T72] [ 2417.817325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2417.817325][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.817325][ T72] ipv6_find_idev+0x102/0x170 [ 2417.817325][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.817325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.817325][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.817325][ T72] netlink_unicast+0x449/0x710 [ 2417.817325][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.817325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.817325][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.817325][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.817325][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.817325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.817325][ T72] [ 2417.818837][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2417.818837][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.818837][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.818837][ T72] ipv6_find_idev+0x102/0x170 [ 2417.818837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.818837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.818837][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.818837][ T72] netlink_unicast+0x449/0x710 [ 2417.818837][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.818837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.818837][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.818837][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.818837][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.818837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.818837][ T72] [ 2417.820510][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2417.820787][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2417.820787][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.820787][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.820787][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.820787][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.820787][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.820787][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.820787][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.820787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.820787][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.820787][ T72] netlink_unicast+0x449/0x710 [ 2417.820787][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.820787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.820787][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.820787][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.820787][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.820787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.820787][ T72] [ 2417.822737][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2417.822737][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.822737][ T72] ipv6_find_idev+0x102/0x170 [ 2417.822737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.822737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.822737][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.822737][ T72] netlink_unicast+0x449/0x710 [ 2417.822737][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.822737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.822737][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.822737][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.822737][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.822737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.822737][ T72] [ 2417.824245][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2417.824245][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.824245][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.824245][ T72] ipv6_find_idev+0x102/0x170 [ 2417.824245][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.824245][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.824245][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.824245][ T72] netlink_unicast+0x449/0x710 [ 2417.824245][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.824245][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.824245][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.824245][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.824245][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.824245][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.824245][ T72] [ 2417.825897][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2417.826162][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2417.826162][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.826162][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.826162][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.826162][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.826162][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.826162][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.826162][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.826162][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.826162][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.826162][ T72] netlink_unicast+0x449/0x710 [ 2417.826162][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.826162][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.826162][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.826162][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.826162][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.826162][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.826162][ T72] [ 2417.828114][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2417.828114][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.828114][ T72] ipv6_find_idev+0x102/0x170 [ 2417.828114][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.828114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.828114][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.828114][ T72] netlink_unicast+0x449/0x710 [ 2417.828114][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.828114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.828114][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.828114][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.828114][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.828114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.828114][ T72] [ 2417.829643][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2417.829643][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.829643][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.829643][ T72] ipv6_find_idev+0x102/0x170 [ 2417.829643][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.829643][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.829643][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.829643][ T72] netlink_unicast+0x449/0x710 [ 2417.829643][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.829643][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.829643][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.829643][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.829643][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.829643][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.829643][ T72] [ 2417.831293][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2417.831553][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2417.831553][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.831553][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.831553][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.831553][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.831553][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.831553][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.831553][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.831553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.831553][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.831553][ T72] netlink_unicast+0x449/0x710 [ 2417.831553][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.831553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.831553][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.831553][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.831553][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.831553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.831553][ T72] [ 2417.833508][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2417.833508][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.833508][ T72] ipv6_find_idev+0x102/0x170 [ 2417.833508][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.833508][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.833508][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.833508][ T72] netlink_unicast+0x449/0x710 [ 2417.833508][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.833508][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.833508][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.833508][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.833508][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.833508][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.833508][ T72] [ 2417.835018][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2417.835018][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.835018][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.835018][ T72] ipv6_find_idev+0x102/0x170 [ 2417.835018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.835018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.835018][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.835018][ T72] netlink_unicast+0x449/0x710 [ 2417.835018][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.835018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.835018][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.835018][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.835018][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.835018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.835018][ T72] [ 2417.837084][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2417.837340][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2417.837340][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.837340][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.837340][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.837340][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.837340][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.837340][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.837340][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.837340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.837340][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.837340][ T72] netlink_unicast+0x449/0x710 [ 2417.837340][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.837340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.837340][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.837340][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.837340][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.837340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.837340][ T72] [ 2417.839327][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2417.839327][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.839327][ T72] ipv6_find_idev+0x102/0x170 [ 2417.839327][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.839327][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.839327][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.839327][ T72] netlink_unicast+0x449/0x710 [ 2417.839327][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.839327][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.839327][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.839327][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.839327][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.839327][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.839327][ T72] [ 2417.840857][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2417.840857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.840857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.840857][ T72] ipv6_find_idev+0x102/0x170 [ 2417.840857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.840857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.840857][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.840857][ T72] netlink_unicast+0x449/0x710 [ 2417.840857][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.840857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.840857][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.840857][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.840857][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.840857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.840857][ T72] [ 2417.842538][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2417.842856][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2417.842856][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.842856][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.842856][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.842856][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.842856][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.842856][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.842856][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.842856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.842856][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.842856][ T72] netlink_unicast+0x449/0x710 [ 2417.842856][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.842856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.842856][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.842856][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.842856][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.842856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.842856][ T72] [ 2417.844970][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2417.844970][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.844970][ T72] ipv6_find_idev+0x102/0x170 [ 2417.844970][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.844970][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.844970][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.844970][ T72] netlink_unicast+0x449/0x710 [ 2417.844970][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.844970][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.844970][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.844970][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.844970][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.844970][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.844970][ T72] [ 2417.846650][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2417.846650][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.846650][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.846650][ T72] ipv6_find_idev+0x102/0x170 [ 2417.846650][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.846650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.846650][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.846650][ T72] netlink_unicast+0x449/0x710 [ 2417.846650][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.846650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.846650][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.846650][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.846650][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.846650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.846650][ T72] [ 2417.848576][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2417.848889][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2417.848889][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.848889][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.848889][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.848889][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.848889][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.848889][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.848889][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.848889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.848889][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.848889][ T72] netlink_unicast+0x449/0x710 [ 2417.848889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.848889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.848889][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.848889][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.848889][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.848889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.848889][ T72] [ 2417.851547][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2417.851547][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.851547][ T72] ipv6_find_idev+0x102/0x170 [ 2417.851547][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.851547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.851547][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.851547][ T72] netlink_unicast+0x449/0x710 [ 2417.851547][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.851547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.851547][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.851547][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.851547][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.851547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.851547][ T72] [ 2417.853231][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2417.853231][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.853231][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.853231][ T72] ipv6_find_idev+0x102/0x170 [ 2417.853231][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.853231][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.853231][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.853231][ T72] netlink_unicast+0x449/0x710 [ 2417.853231][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.853231][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.853231][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.853231][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.853231][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.853231][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.853231][ T72] [ 2417.855544][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2417.855861][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2417.855861][ T72] netdev_get_by_index+0x5e/0x80 [ 2417.855861][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2417.855861][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2417.855861][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2417.855861][ T72] ipv6_add_addr+0x411/0x2000 [ 2417.855861][ T72] inet6_addr_add+0x30e/0xa40 [ 2417.855861][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2417.855861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.855861][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.855861][ T72] netlink_unicast+0x449/0x710 [ 2417.855861][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.855861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.855861][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.855861][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.855861][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.855861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.855861][ T72] [ 2417.858052][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2417.858052][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2417.858052][ T72] ipv6_find_idev+0x102/0x170 [ 2417.858052][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.858052][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.858052][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.858052][ T72] netlink_unicast+0x449/0x710 [ 2417.858052][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.858052][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.858052][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.858052][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.858052][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.858052][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.858052][ T72] [ 2417.859837][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2417.859837][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2417.859837][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2417.859837][ T72] ipv6_find_idev+0x102/0x170 [ 2417.859837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2417.859837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2417.859837][ T72] netlink_rcv_skb+0x130/0x360 [ 2417.859837][ T72] netlink_unicast+0x449/0x710 [ 2417.859837][ T72] netlink_sendmsg+0x723/0xbe0 [ 2417.859837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2417.859837][ T72] ___sys_sendmsg+0xee/0x170 [ 2417.859837][ T72] __sys_sendmsg+0xcd/0x170 [ 2417.859837][ T72] do_syscall_64+0xc6/0x1e0 [ 2417.859837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2417.859837][ T72] [ 2428.102842][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2428.103262][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2428.103262][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.103262][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.103262][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.103262][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.103262][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.103262][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.103262][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.103262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.103262][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.103262][ T72] netlink_unicast+0x449/0x710 [ 2428.103262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.103262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.103262][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.103262][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.103262][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.103262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.103262][ T72] [ 2428.105277][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2428.105277][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.105277][ T72] ipv6_find_idev+0x102/0x170 [ 2428.105277][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.105277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.105277][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.105277][ T72] netlink_unicast+0x449/0x710 [ 2428.105277][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.105277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.105277][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.105277][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.105277][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.105277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.105277][ T72] [ 2428.106825][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2428.106825][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.106825][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.106825][ T72] ipv6_find_idev+0x102/0x170 [ 2428.106825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.106825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.106825][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.106825][ T72] netlink_unicast+0x449/0x710 [ 2428.106825][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.106825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.106825][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.106825][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.106825][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.106825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.106825][ T72] [ 2428.108563][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2428.108929][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2428.108929][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.108929][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.108929][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.108929][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.108929][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.108929][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.108929][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.108929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.108929][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.108929][ T72] netlink_unicast+0x449/0x710 [ 2428.108929][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.108929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.108929][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.108929][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.108929][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.108929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.108929][ T72] [ 2428.110920][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2428.110920][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.110920][ T72] ipv6_find_idev+0x102/0x170 [ 2428.110920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.110920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.110920][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.110920][ T72] netlink_unicast+0x449/0x710 [ 2428.110920][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.110920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.110920][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.110920][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.110920][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.110920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.110920][ T72] [ 2428.112455][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2428.112455][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.112455][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.112455][ T72] ipv6_find_idev+0x102/0x170 [ 2428.112455][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.112455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.112455][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.112455][ T72] netlink_unicast+0x449/0x710 [ 2428.112455][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.112455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.112455][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.112455][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.112455][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.112455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.112455][ T72] [ 2428.114145][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2428.114811][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2428.114811][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.114811][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.114811][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.114811][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.114811][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.114811][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.114811][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.114811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.114811][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.114811][ T72] netlink_unicast+0x449/0x710 [ 2428.114811][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.114811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.114811][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.114811][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.114811][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.114811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.114811][ T72] [ 2428.116792][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2428.116792][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.116792][ T72] ipv6_find_idev+0x102/0x170 [ 2428.116792][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.116792][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.116792][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.116792][ T72] netlink_unicast+0x449/0x710 [ 2428.116792][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.116792][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.116792][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.116792][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.116792][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.116792][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.116792][ T72] [ 2428.118313][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2428.118313][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.118313][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.118313][ T72] ipv6_find_idev+0x102/0x170 [ 2428.118313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.118313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.118313][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.118313][ T72] netlink_unicast+0x449/0x710 [ 2428.118313][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.118313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.118313][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.118313][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.118313][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.118313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.118313][ T72] [ 2428.119987][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2428.120261][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2428.120261][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.120261][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.120261][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.120261][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.120261][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.120261][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.120261][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.120261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.120261][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.120261][ T72] netlink_unicast+0x449/0x710 [ 2428.120261][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.120261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.120261][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.120261][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.120261][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.120261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.120261][ T72] [ 2428.122246][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2428.122246][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.122246][ T72] ipv6_find_idev+0x102/0x170 [ 2428.122246][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.122246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.122246][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.122246][ T72] netlink_unicast+0x449/0x710 [ 2428.122246][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.122246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.122246][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.122246][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.122246][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.122246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.122246][ T72] [ 2428.123768][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2428.123768][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.123768][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.123768][ T72] ipv6_find_idev+0x102/0x170 [ 2428.123768][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.123768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.123768][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.123768][ T72] netlink_unicast+0x449/0x710 [ 2428.123768][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.123768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.123768][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.123768][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.123768][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.123768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.123768][ T72] [ 2428.125867][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2428.126456][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2428.126456][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.126456][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.126456][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.126456][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.126456][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.126456][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.126456][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.126456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.126456][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.126456][ T72] netlink_unicast+0x449/0x710 [ 2428.126456][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.126456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.126456][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.126456][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.126456][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.126456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.126456][ T72] [ 2428.128430][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2428.128430][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.128430][ T72] ipv6_find_idev+0x102/0x170 [ 2428.128430][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.128430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.128430][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.128430][ T72] netlink_unicast+0x449/0x710 [ 2428.128430][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.128430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.128430][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.128430][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.128430][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.128430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.128430][ T72] [ 2428.129957][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2428.129957][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.129957][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.129957][ T72] ipv6_find_idev+0x102/0x170 [ 2428.129957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.129957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.129957][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.129957][ T72] netlink_unicast+0x449/0x710 [ 2428.129957][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.129957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.129957][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.129957][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.129957][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.129957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.129957][ T72] [ 2428.131631][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2428.131951][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2428.131951][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.131951][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.131951][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.131951][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.131951][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.131951][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.131951][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.131951][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.131951][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.131951][ T72] netlink_unicast+0x449/0x710 [ 2428.131951][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.131951][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.131951][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.131951][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.131951][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.131951][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.131951][ T72] [ 2428.133935][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2428.133935][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.133935][ T72] ipv6_find_idev+0x102/0x170 [ 2428.133935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.133935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.133935][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.133935][ T72] netlink_unicast+0x449/0x710 [ 2428.133935][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.133935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.133935][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.133935][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.133935][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.133935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.133935][ T72] [ 2428.135459][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2428.135459][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.135459][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.135459][ T72] ipv6_find_idev+0x102/0x170 [ 2428.135459][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.135459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.135459][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.135459][ T72] netlink_unicast+0x449/0x710 [ 2428.135459][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.135459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.135459][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.135459][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.135459][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.135459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.135459][ T72] [ 2428.137379][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2428.137686][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2428.137686][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.137686][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.137686][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.137686][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.137686][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.137686][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.137686][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.137686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.137686][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.137686][ T72] netlink_unicast+0x449/0x710 [ 2428.137686][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.137686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.137686][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.137686][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.137686][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.137686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.137686][ T72] [ 2428.139957][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2428.139957][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.139957][ T72] ipv6_find_idev+0x102/0x170 [ 2428.139957][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.139957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.139957][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.139957][ T72] netlink_unicast+0x449/0x710 [ 2428.139957][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.139957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.139957][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.139957][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.139957][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.139957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.139957][ T72] [ 2428.141660][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2428.141660][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.141660][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.141660][ T72] ipv6_find_idev+0x102/0x170 [ 2428.141660][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.141660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.141660][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.141660][ T72] netlink_unicast+0x449/0x710 [ 2428.141660][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.141660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.141660][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.141660][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.141660][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.141660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.141660][ T72] [ 2428.143540][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2428.143853][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2428.143853][ T72] netdev_get_by_index+0x5e/0x80 [ 2428.143853][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2428.143853][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2428.143853][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2428.143853][ T72] ipv6_add_addr+0x411/0x2000 [ 2428.143853][ T72] inet6_addr_add+0x30e/0xa40 [ 2428.143853][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2428.143853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.143853][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.143853][ T72] netlink_unicast+0x449/0x710 [ 2428.143853][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.143853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.143853][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.143853][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.143853][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.143853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.143853][ T72] [ 2428.146012][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2428.146012][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2428.146012][ T72] ipv6_find_idev+0x102/0x170 [ 2428.146012][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.146012][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.146012][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.146012][ T72] netlink_unicast+0x449/0x710 [ 2428.146012][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.146012][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.146012][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.146012][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.146012][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.146012][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.146012][ T72] [ 2428.147712][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2428.147712][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2428.147712][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2428.147712][ T72] ipv6_find_idev+0x102/0x170 [ 2428.147712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2428.147712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2428.147712][ T72] netlink_rcv_skb+0x130/0x360 [ 2428.147712][ T72] netlink_unicast+0x449/0x710 [ 2428.147712][ T72] netlink_sendmsg+0x723/0xbe0 [ 2428.147712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2428.147712][ T72] ___sys_sendmsg+0xee/0x170 [ 2428.147712][ T72] __sys_sendmsg+0xcd/0x170 [ 2428.147712][ T72] do_syscall_64+0xc6/0x1e0 [ 2428.147712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2428.147712][ T72] [ 2438.390843][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2438.391363][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2438.391363][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.391363][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.391363][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.391363][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.391363][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.391363][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.391363][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.391363][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.391363][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.391363][ T72] netlink_unicast+0x449/0x710 [ 2438.391363][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.391363][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.391363][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.391363][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.391363][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.391363][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.391363][ T72] [ 2438.393462][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2438.393462][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.393462][ T72] ipv6_find_idev+0x102/0x170 [ 2438.393462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.393462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.393462][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.393462][ T72] netlink_unicast+0x449/0x710 [ 2438.393462][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.393462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.393462][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.393462][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.393462][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.393462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.393462][ T72] [ 2438.395012][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2438.395012][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.395012][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.395012][ T72] ipv6_find_idev+0x102/0x170 [ 2438.395012][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.395012][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.395012][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.395012][ T72] netlink_unicast+0x449/0x710 [ 2438.395012][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.395012][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.395012][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.395012][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.395012][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.395012][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.395012][ T72] [ 2438.396749][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2438.397051][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2438.397051][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.397051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.397051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.397051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.397051][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.397051][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.397051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.397051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.397051][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.397051][ T72] netlink_unicast+0x449/0x710 [ 2438.397051][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.397051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.397051][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.397051][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.397051][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.397051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.397051][ T72] [ 2438.399156][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2438.399156][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.399156][ T72] ipv6_find_idev+0x102/0x170 [ 2438.399156][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.399156][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.399156][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.399156][ T72] netlink_unicast+0x449/0x710 [ 2438.399156][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.399156][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.399156][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.399156][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.399156][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.399156][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.399156][ T72] [ 2438.400784][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2438.400784][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.400784][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.400784][ T72] ipv6_find_idev+0x102/0x170 [ 2438.400784][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.400784][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.400784][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.400784][ T72] netlink_unicast+0x449/0x710 [ 2438.400784][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.400784][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.400784][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.400784][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.400784][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.400784][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.400784][ T72] [ 2438.402585][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2438.402893][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2438.402893][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.402893][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.402893][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.402893][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.402893][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.402893][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.402893][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.402893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.402893][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.402893][ T72] netlink_unicast+0x449/0x710 [ 2438.402893][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.402893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.402893][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.402893][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.402893][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.402893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.402893][ T72] [ 2438.404974][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2438.404974][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.404974][ T72] ipv6_find_idev+0x102/0x170 [ 2438.404974][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.404974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.404974][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.404974][ T72] netlink_unicast+0x449/0x710 [ 2438.404974][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.404974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.404974][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.404974][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.404974][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.404974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.404974][ T72] [ 2438.406548][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2438.406548][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.406548][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.406548][ T72] ipv6_find_idev+0x102/0x170 [ 2438.406548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.406548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.406548][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.406548][ T72] netlink_unicast+0x449/0x710 [ 2438.406548][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.406548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.406548][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.406548][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.406548][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.406548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.406548][ T72] [ 2438.408294][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2438.408569][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2438.408569][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.408569][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.408569][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.408569][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.408569][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.408569][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.408569][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.408569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.408569][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.408569][ T72] netlink_unicast+0x449/0x710 [ 2438.408569][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.408569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.408569][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.408569][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.408569][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.408569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.408569][ T72] [ 2438.410610][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2438.410610][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.410610][ T72] ipv6_find_idev+0x102/0x170 [ 2438.410610][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.410610][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.410610][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.410610][ T72] netlink_unicast+0x449/0x710 [ 2438.410610][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.410610][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.410610][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.410610][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.410610][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.410610][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.410610][ T72] [ 2438.412198][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2438.412198][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.412198][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.412198][ T72] ipv6_find_idev+0x102/0x170 [ 2438.412198][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.412198][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.412198][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.412198][ T72] netlink_unicast+0x449/0x710 [ 2438.412198][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.412198][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.412198][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.412198][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.412198][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.412198][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.412198][ T72] [ 2438.414441][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2438.415065][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2438.415065][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.415065][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.415065][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.415065][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.415065][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.415065][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.415065][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.415065][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.415065][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.415065][ T72] netlink_unicast+0x449/0x710 [ 2438.415065][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.415065][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.415065][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.415065][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.415065][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.415065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.415065][ T72] [ 2438.417196][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2438.417196][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.417196][ T72] ipv6_find_idev+0x102/0x170 [ 2438.417196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.417196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.417196][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.417196][ T72] netlink_unicast+0x449/0x710 [ 2438.417196][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.417196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.417196][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.417196][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.417196][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.417196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.417196][ T72] [ 2438.418900][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2438.418900][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.418900][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.418900][ T72] ipv6_find_idev+0x102/0x170 [ 2438.418900][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.418900][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.418900][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.418900][ T72] netlink_unicast+0x449/0x710 [ 2438.418900][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.418900][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.418900][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.418900][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.418900][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.418900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.418900][ T72] [ 2438.421713][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2438.422102][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2438.422102][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.422102][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.422102][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.422102][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.422102][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.422102][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.422102][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.422102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.422102][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.422102][ T72] netlink_unicast+0x449/0x710 [ 2438.422102][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.422102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.422102][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.422102][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.422102][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.422102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.422102][ T72] [ 2438.424306][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2438.424306][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.424306][ T72] ipv6_find_idev+0x102/0x170 [ 2438.424306][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.424306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.424306][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.424306][ T72] netlink_unicast+0x449/0x710 [ 2438.424306][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.424306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.424306][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.424306][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.424306][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.424306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.424306][ T72] [ 2438.425993][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2438.425993][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.425993][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.425993][ T72] ipv6_find_idev+0x102/0x170 [ 2438.425993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.425993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.425993][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.425993][ T72] netlink_unicast+0x449/0x710 [ 2438.425993][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.425993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.425993][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.425993][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.425993][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.425993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.425993][ T72] [ 2438.427921][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2438.428237][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2438.428237][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.428237][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.428237][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.428237][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.428237][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.428237][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.428237][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.428237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.428237][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.428237][ T72] netlink_unicast+0x449/0x710 [ 2438.428237][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.428237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.428237][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.428237][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.428237][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.428237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.428237][ T72] [ 2438.430456][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2438.430456][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.430456][ T72] ipv6_find_idev+0x102/0x170 [ 2438.430456][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.430456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.430456][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.430456][ T72] netlink_unicast+0x449/0x710 [ 2438.430456][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.430456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.430456][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.430456][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.430456][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.430456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.430456][ T72] [ 2438.432272][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2438.432272][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.432272][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.432272][ T72] ipv6_find_idev+0x102/0x170 [ 2438.432272][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.432272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.432272][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.432272][ T72] netlink_unicast+0x449/0x710 [ 2438.432272][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.432272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.432272][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.432272][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.432272][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.432272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.432272][ T72] [ 2438.434320][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2438.434665][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2438.434665][ T72] netdev_get_by_index+0x5e/0x80 [ 2438.434665][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2438.434665][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2438.434665][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2438.434665][ T72] ipv6_add_addr+0x411/0x2000 [ 2438.434665][ T72] inet6_addr_add+0x30e/0xa40 [ 2438.434665][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2438.434665][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.434665][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.434665][ T72] netlink_unicast+0x449/0x710 [ 2438.434665][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.434665][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.434665][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.434665][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.434665][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.434665][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.434665][ T72] [ 2438.437389][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2438.437389][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2438.437389][ T72] ipv6_find_idev+0x102/0x170 [ 2438.437389][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.437389][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.437389][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.437389][ T72] netlink_unicast+0x449/0x710 [ 2438.437389][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.437389][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.437389][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.437389][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.437389][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.437389][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.437389][ T72] [ 2438.439221][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2438.439221][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2438.439221][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2438.439221][ T72] ipv6_find_idev+0x102/0x170 [ 2438.439221][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2438.439221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2438.439221][ T72] netlink_rcv_skb+0x130/0x360 [ 2438.439221][ T72] netlink_unicast+0x449/0x710 [ 2438.439221][ T72] netlink_sendmsg+0x723/0xbe0 [ 2438.439221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2438.439221][ T72] ___sys_sendmsg+0xee/0x170 [ 2438.439221][ T72] __sys_sendmsg+0xcd/0x170 [ 2438.439221][ T72] do_syscall_64+0xc6/0x1e0 [ 2438.439221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2438.439221][ T72] [ 2448.478826][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2448.479374][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2448.479374][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.479374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.479374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.479374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.479374][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.479374][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.479374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.479374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.479374][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.479374][ T72] netlink_unicast+0x449/0x710 [ 2448.479374][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.479374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.479374][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.479374][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.479374][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.479374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.479374][ T72] [ 2448.482560][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2448.482560][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.482560][ T72] ipv6_find_idev+0x102/0x170 [ 2448.482560][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.482560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.482560][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.482560][ T72] netlink_unicast+0x449/0x710 [ 2448.482560][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.482560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.482560][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.482560][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.482560][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.482560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.482560][ T72] [ 2448.484953][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2448.484953][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.484953][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.484953][ T72] ipv6_find_idev+0x102/0x170 [ 2448.484953][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.484953][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.484953][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.484953][ T72] netlink_unicast+0x449/0x710 [ 2448.484953][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.484953][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.484953][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.484953][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.484953][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.484953][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.484953][ T72] [ 2448.487618][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2448.488073][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2448.488073][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.488073][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.488073][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.488073][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.488073][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.488073][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.488073][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.488073][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.488073][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.488073][ T72] netlink_unicast+0x449/0x710 [ 2448.488073][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.488073][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.488073][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.488073][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.488073][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.488073][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.488073][ T72] [ 2448.491024][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2448.491024][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.491024][ T72] ipv6_find_idev+0x102/0x170 [ 2448.491024][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.491024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.491024][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.491024][ T72] netlink_unicast+0x449/0x710 [ 2448.491024][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.491024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.491024][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.491024][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.491024][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.491024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.491024][ T72] [ 2448.493288][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2448.493288][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.493288][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.493288][ T72] ipv6_find_idev+0x102/0x170 [ 2448.493288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.493288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.493288][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.493288][ T72] netlink_unicast+0x449/0x710 [ 2448.493288][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.493288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.493288][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.493288][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.493288][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.493288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.493288][ T72] [ 2448.495824][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2448.496260][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2448.496260][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.496260][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.496260][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.496260][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.496260][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.496260][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.496260][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.496260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.496260][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.496260][ T72] netlink_unicast+0x449/0x710 [ 2448.496260][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.496260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.496260][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.496260][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.496260][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.496260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.496260][ T72] [ 2448.499386][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2448.499386][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.499386][ T72] ipv6_find_idev+0x102/0x170 [ 2448.499386][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.499386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.499386][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.499386][ T72] netlink_unicast+0x449/0x710 [ 2448.499386][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.499386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.499386][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.499386][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.499386][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.499386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.499386][ T72] [ 2448.501803][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2448.501803][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.501803][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.501803][ T72] ipv6_find_idev+0x102/0x170 [ 2448.501803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.501803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.501803][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.501803][ T72] netlink_unicast+0x449/0x710 [ 2448.501803][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.501803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.501803][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.501803][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.501803][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.501803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.501803][ T72] [ 2448.505197][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2448.505719][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2448.505719][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.505719][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.505719][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.505719][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.505719][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.505719][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.505719][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.505719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.505719][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.505719][ T72] netlink_unicast+0x449/0x710 [ 2448.505719][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.505719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.505719][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.505719][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.505719][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.505719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.505719][ T72] [ 2448.508862][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2448.508862][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.508862][ T72] ipv6_find_idev+0x102/0x170 [ 2448.508862][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.508862][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.508862][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.508862][ T72] netlink_unicast+0x449/0x710 [ 2448.508862][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.508862][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.508862][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.508862][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.508862][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.508862][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.508862][ T72] [ 2448.511252][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2448.511252][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.511252][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.511252][ T72] ipv6_find_idev+0x102/0x170 [ 2448.511252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.511252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.511252][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.511252][ T72] netlink_unicast+0x449/0x710 [ 2448.511252][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.511252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.511252][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.511252][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.511252][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.511252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.511252][ T72] [ 2448.513944][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2448.514358][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2448.514358][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.514358][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.514358][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.514358][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.514358][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.514358][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.514358][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.514358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.514358][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.514358][ T72] netlink_unicast+0x449/0x710 [ 2448.514358][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.514358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.514358][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.514358][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.514358][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.514358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.514358][ T72] [ 2448.517396][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2448.517396][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.517396][ T72] ipv6_find_idev+0x102/0x170 [ 2448.517396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.517396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.517396][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.517396][ T72] netlink_unicast+0x449/0x710 [ 2448.517396][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.517396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.517396][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.517396][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.517396][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.517396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.517396][ T72] [ 2448.519648][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2448.519648][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.519648][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.519648][ T72] ipv6_find_idev+0x102/0x170 [ 2448.519648][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.519648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.519648][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.519648][ T72] netlink_unicast+0x449/0x710 [ 2448.519648][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.519648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.519648][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.519648][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.519648][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.519648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.519648][ T72] [ 2448.522204][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2448.522619][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2448.522619][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.522619][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.522619][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.522619][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.522619][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.522619][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.522619][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.522619][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.522619][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.522619][ T72] netlink_unicast+0x449/0x710 [ 2448.522619][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.522619][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.522619][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.522619][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.522619][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.522619][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.522619][ T72] [ 2448.525964][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2448.525964][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.525964][ T72] ipv6_find_idev+0x102/0x170 [ 2448.525964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.525964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.525964][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.525964][ T72] netlink_unicast+0x449/0x710 [ 2448.525964][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.525964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.525964][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.525964][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.525964][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.525964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.525964][ T72] [ 2448.528772][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2448.528772][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.528772][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.528772][ T72] ipv6_find_idev+0x102/0x170 [ 2448.528772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.528772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.528772][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.528772][ T72] netlink_unicast+0x449/0x710 [ 2448.528772][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.528772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.528772][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.528772][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.528772][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.528772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.528772][ T72] [ 2448.531813][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2448.532230][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2448.532230][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.532230][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.532230][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.532230][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.532230][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.532230][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.532230][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.532230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.532230][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.532230][ T72] netlink_unicast+0x449/0x710 [ 2448.532230][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.532230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.532230][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.532230][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.532230][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.532230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.532230][ T72] [ 2448.535773][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2448.535773][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.535773][ T72] ipv6_find_idev+0x102/0x170 [ 2448.535773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.535773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.535773][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.535773][ T72] netlink_unicast+0x449/0x710 [ 2448.535773][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.535773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.535773][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.535773][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.535773][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.535773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.535773][ T72] [ 2448.538495][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2448.538495][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.538495][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.538495][ T72] ipv6_find_idev+0x102/0x170 [ 2448.538495][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.538495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.538495][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.538495][ T72] netlink_unicast+0x449/0x710 [ 2448.538495][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.538495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.538495][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.538495][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.538495][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.538495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.538495][ T72] [ 2448.541509][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2448.542028][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2448.542028][ T72] netdev_get_by_index+0x5e/0x80 [ 2448.542028][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2448.542028][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2448.542028][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2448.542028][ T72] ipv6_add_addr+0x411/0x2000 [ 2448.542028][ T72] inet6_addr_add+0x30e/0xa40 [ 2448.542028][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2448.542028][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.542028][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.542028][ T72] netlink_unicast+0x449/0x710 [ 2448.542028][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.542028][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.542028][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.542028][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.542028][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.542028][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.542028][ T72] [ 2448.545465][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2448.545465][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2448.545465][ T72] ipv6_find_idev+0x102/0x170 [ 2448.545465][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.545465][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.545465][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.545465][ T72] netlink_unicast+0x449/0x710 [ 2448.545465][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.545465][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.545465][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.545465][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.545465][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.545465][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.545465][ T72] [ 2448.548021][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2448.548021][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2448.548021][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2448.548021][ T72] ipv6_find_idev+0x102/0x170 [ 2448.548021][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2448.548021][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2448.548021][ T72] netlink_rcv_skb+0x130/0x360 [ 2448.548021][ T72] netlink_unicast+0x449/0x710 [ 2448.548021][ T72] netlink_sendmsg+0x723/0xbe0 [ 2448.548021][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2448.548021][ T72] ___sys_sendmsg+0xee/0x170 [ 2448.548021][ T72] __sys_sendmsg+0xcd/0x170 [ 2448.548021][ T72] do_syscall_64+0xc6/0x1e0 [ 2448.548021][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2448.548021][ T72] [ 2458.606921][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2458.607392][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2458.607392][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.607392][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.607392][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.607392][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.607392][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.607392][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.607392][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.607392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.607392][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.607392][ T72] netlink_unicast+0x449/0x710 [ 2458.607392][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.607392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.607392][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.607392][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.607392][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.607392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.607392][ T72] [ 2458.609414][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2458.609414][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.609414][ T72] ipv6_find_idev+0x102/0x170 [ 2458.609414][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.609414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.609414][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.609414][ T72] netlink_unicast+0x449/0x710 [ 2458.609414][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.609414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.609414][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.609414][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.609414][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.609414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.609414][ T72] [ 2458.610939][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2458.610939][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.610939][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.610939][ T72] ipv6_find_idev+0x102/0x170 [ 2458.610939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.610939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.610939][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.610939][ T72] netlink_unicast+0x449/0x710 [ 2458.610939][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.610939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.610939][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.610939][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.610939][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.610939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.610939][ T72] [ 2458.612597][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2458.612877][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2458.612877][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.612877][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.612877][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.612877][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.612877][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.612877][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.612877][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.612877][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.612877][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.612877][ T72] netlink_unicast+0x449/0x710 [ 2458.612877][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.612877][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.612877][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.612877][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.612877][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.612877][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.612877][ T72] [ 2458.614833][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2458.614833][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.614833][ T72] ipv6_find_idev+0x102/0x170 [ 2458.614833][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.614833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.614833][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.614833][ T72] netlink_unicast+0x449/0x710 [ 2458.614833][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.614833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.614833][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.614833][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.614833][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.614833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.614833][ T72] [ 2458.616341][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2458.616341][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.616341][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.616341][ T72] ipv6_find_idev+0x102/0x170 [ 2458.616341][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.616341][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.616341][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.616341][ T72] netlink_unicast+0x449/0x710 [ 2458.616341][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.616341][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.616341][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.616341][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.616341][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.616341][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.616341][ T72] [ 2458.617993][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2458.618249][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2458.618249][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.618249][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.618249][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.618249][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.618249][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.618249][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.618249][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.618249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.618249][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.618249][ T72] netlink_unicast+0x449/0x710 [ 2458.618249][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.618249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.618249][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.618249][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.618249][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.618249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.618249][ T72] [ 2458.620213][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2458.620213][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.620213][ T72] ipv6_find_idev+0x102/0x170 [ 2458.620213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.620213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.620213][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.620213][ T72] netlink_unicast+0x449/0x710 [ 2458.620213][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.620213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.620213][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.620213][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.620213][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.620213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.620213][ T72] [ 2458.621718][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2458.621718][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.621718][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.621718][ T72] ipv6_find_idev+0x102/0x170 [ 2458.621718][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.621718][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.621718][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.621718][ T72] netlink_unicast+0x449/0x710 [ 2458.621718][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.621718][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.621718][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.621718][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.621718][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.621718][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.621718][ T72] [ 2458.623363][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2458.623626][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2458.623626][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.623626][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.623626][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.623626][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.623626][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.623626][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.623626][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.623626][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.623626][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.623626][ T72] netlink_unicast+0x449/0x710 [ 2458.623626][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.623626][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.623626][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.623626][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.623626][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.623626][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.623626][ T72] [ 2458.625585][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2458.625585][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.625585][ T72] ipv6_find_idev+0x102/0x170 [ 2458.625585][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.625585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.625585][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.625585][ T72] netlink_unicast+0x449/0x710 [ 2458.625585][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.625585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.625585][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.625585][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.625585][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.625585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.625585][ T72] [ 2458.627089][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2458.627089][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.627089][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.627089][ T72] ipv6_find_idev+0x102/0x170 [ 2458.627089][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.627089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.627089][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.627089][ T72] netlink_unicast+0x449/0x710 [ 2458.627089][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.627089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.627089][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.627089][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.627089][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.627089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.627089][ T72] [ 2458.629156][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2458.629417][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2458.629417][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.629417][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.629417][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.629417][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.629417][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.629417][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.629417][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.629417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.629417][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.629417][ T72] netlink_unicast+0x449/0x710 [ 2458.629417][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.629417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.629417][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.629417][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.629417][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.629417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.629417][ T72] [ 2458.631378][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2458.631378][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.631378][ T72] ipv6_find_idev+0x102/0x170 [ 2458.631378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.631378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.631378][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.631378][ T72] netlink_unicast+0x449/0x710 [ 2458.631378][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.631378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.631378][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.631378][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.631378][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.631378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.631378][ T72] [ 2458.632888][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2458.632888][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.632888][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.632888][ T72] ipv6_find_idev+0x102/0x170 [ 2458.632888][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.632888][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.632888][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.632888][ T72] netlink_unicast+0x449/0x710 [ 2458.632888][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.632888][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.632888][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.632888][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.632888][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.632888][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.632888][ T72] [ 2458.634582][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2458.634896][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2458.634896][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.634896][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.634896][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.634896][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.634896][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.634896][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.634896][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.634896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.634896][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.634896][ T72] netlink_unicast+0x449/0x710 [ 2458.634896][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.634896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.634896][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.634896][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.634896][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.634896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.634896][ T72] [ 2458.636970][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2458.636970][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.636970][ T72] ipv6_find_idev+0x102/0x170 [ 2458.636970][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.636970][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.636970][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.636970][ T72] netlink_unicast+0x449/0x710 [ 2458.636970][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.636970][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.636970][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.636970][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.636970][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.636970][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.636970][ T72] [ 2458.638717][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2458.638717][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.638717][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.638717][ T72] ipv6_find_idev+0x102/0x170 [ 2458.638717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.638717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.638717][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.638717][ T72] netlink_unicast+0x449/0x710 [ 2458.638717][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.638717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.638717][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.638717][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.638717][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.638717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.638717][ T72] [ 2458.640601][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2458.640909][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2458.640909][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.640909][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.640909][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.640909][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.640909][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.640909][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.640909][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.640909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.640909][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.640909][ T72] netlink_unicast+0x449/0x710 [ 2458.640909][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.640909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.640909][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.640909][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.640909][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.640909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.640909][ T72] [ 2458.642982][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2458.642982][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.642982][ T72] ipv6_find_idev+0x102/0x170 [ 2458.642982][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.642982][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.642982][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.642982][ T72] netlink_unicast+0x449/0x710 [ 2458.642982][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.642982][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.642982][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.642982][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.642982][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.642982][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.642982][ T72] [ 2458.644663][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2458.644663][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.644663][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.644663][ T72] ipv6_find_idev+0x102/0x170 [ 2458.644663][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.644663][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.644663][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.644663][ T72] netlink_unicast+0x449/0x710 [ 2458.644663][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.644663][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.644663][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.644663][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.644663][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.644663][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.644663][ T72] [ 2458.646587][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2458.646900][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2458.646900][ T72] netdev_get_by_index+0x5e/0x80 [ 2458.646900][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2458.646900][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2458.646900][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2458.646900][ T72] ipv6_add_addr+0x411/0x2000 [ 2458.646900][ T72] inet6_addr_add+0x30e/0xa40 [ 2458.646900][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2458.646900][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.646900][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.646900][ T72] netlink_unicast+0x449/0x710 [ 2458.646900][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.646900][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.646900][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.646900][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.646900][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.646900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.646900][ T72] [ 2458.649098][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2458.649098][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2458.649098][ T72] ipv6_find_idev+0x102/0x170 [ 2458.649098][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.649098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.649098][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.649098][ T72] netlink_unicast+0x449/0x710 [ 2458.649098][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.649098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.649098][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.649098][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.649098][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.649098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.649098][ T72] [ 2458.650790][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2458.650790][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2458.650790][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2458.650790][ T72] ipv6_find_idev+0x102/0x170 [ 2458.650790][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2458.650790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2458.650790][ T72] netlink_rcv_skb+0x130/0x360 [ 2458.650790][ T72] netlink_unicast+0x449/0x710 [ 2458.650790][ T72] netlink_sendmsg+0x723/0xbe0 [ 2458.650790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2458.650790][ T72] ___sys_sendmsg+0xee/0x170 [ 2458.650790][ T72] __sys_sendmsg+0xcd/0x170 [ 2458.650790][ T72] do_syscall_64+0xc6/0x1e0 [ 2458.650790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2458.650790][ T72] [ 2468.798946][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2468.799381][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2468.799381][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.799381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.799381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.799381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.799381][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.799381][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.799381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.799381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.799381][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.799381][ T72] netlink_unicast+0x449/0x710 [ 2468.799381][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.799381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.799381][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.799381][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.799381][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.799381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.799381][ T72] [ 2468.801399][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2468.801399][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.801399][ T72] ipv6_find_idev+0x102/0x170 [ 2468.801399][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.801399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.801399][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.801399][ T72] netlink_unicast+0x449/0x710 [ 2468.801399][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.801399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.801399][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.801399][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.801399][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.801399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.801399][ T72] [ 2468.802934][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2468.802934][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.802934][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.802934][ T72] ipv6_find_idev+0x102/0x170 [ 2468.802934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.802934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.802934][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.802934][ T72] netlink_unicast+0x449/0x710 [ 2468.802934][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.802934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.802934][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.802934][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.802934][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.802934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.802934][ T72] [ 2468.804635][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2468.804935][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2468.804935][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.804935][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.804935][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.804935][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.804935][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.804935][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.804935][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.804935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.804935][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.804935][ T72] netlink_unicast+0x449/0x710 [ 2468.804935][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.804935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.804935][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.804935][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.804935][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.804935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.804935][ T72] [ 2468.806951][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2468.806951][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.806951][ T72] ipv6_find_idev+0x102/0x170 [ 2468.806951][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.806951][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.806951][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.806951][ T72] netlink_unicast+0x449/0x710 [ 2468.806951][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.806951][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.806951][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.806951][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.806951][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.806951][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.806951][ T72] [ 2468.808499][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2468.808499][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.808499][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.808499][ T72] ipv6_find_idev+0x102/0x170 [ 2468.808499][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.808499][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.808499][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.808499][ T72] netlink_unicast+0x449/0x710 [ 2468.808499][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.808499][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.808499][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.808499][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.808499][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.808499][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.808499][ T72] [ 2468.810187][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2468.810453][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2468.810453][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.810453][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.810453][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.810453][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.810453][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.810453][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.810453][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.810453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.810453][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.810453][ T72] netlink_unicast+0x449/0x710 [ 2468.810453][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.810453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.810453][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.810453][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.810453][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.810453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.810453][ T72] [ 2468.812443][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2468.812443][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.812443][ T72] ipv6_find_idev+0x102/0x170 [ 2468.812443][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.812443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.812443][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.812443][ T72] netlink_unicast+0x449/0x710 [ 2468.812443][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.812443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.812443][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.812443][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.812443][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.812443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.812443][ T72] [ 2468.813988][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2468.813988][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.813988][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.813988][ T72] ipv6_find_idev+0x102/0x170 [ 2468.813988][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.813988][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.813988][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.813988][ T72] netlink_unicast+0x449/0x710 [ 2468.813988][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.813988][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.813988][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.813988][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.813988][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.813988][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.813988][ T72] [ 2468.815725][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2468.816429][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2468.816429][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.816429][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.816429][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.816429][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.816429][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.816429][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.816429][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.816429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.816429][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.816429][ T72] netlink_unicast+0x449/0x710 [ 2468.816429][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.816429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.816429][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.816429][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.816429][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.816429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.816429][ T72] [ 2468.818480][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2468.818480][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.818480][ T72] ipv6_find_idev+0x102/0x170 [ 2468.818480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.818480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.818480][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.818480][ T72] netlink_unicast+0x449/0x710 [ 2468.818480][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.818480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.818480][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.818480][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.818480][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.818480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.818480][ T72] [ 2468.820101][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2468.820101][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.820101][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.820101][ T72] ipv6_find_idev+0x102/0x170 [ 2468.820101][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.820101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.820101][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.820101][ T72] netlink_unicast+0x449/0x710 [ 2468.820101][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.820101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.820101][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.820101][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.820101][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.820101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.820101][ T72] [ 2468.821820][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2468.822133][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2468.822133][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.822133][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.822133][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.822133][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.822133][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.822133][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.822133][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.822133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.822133][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.822133][ T72] netlink_unicast+0x449/0x710 [ 2468.822133][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.822133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.822133][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.822133][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.822133][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.822133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.822133][ T72] [ 2468.824121][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2468.824121][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.824121][ T72] ipv6_find_idev+0x102/0x170 [ 2468.824121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.824121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.824121][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.824121][ T72] netlink_unicast+0x449/0x710 [ 2468.824121][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.824121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.824121][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.824121][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.824121][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.824121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.824121][ T72] [ 2468.825657][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2468.825657][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.825657][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.825657][ T72] ipv6_find_idev+0x102/0x170 [ 2468.825657][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.825657][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.825657][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.825657][ T72] netlink_unicast+0x449/0x710 [ 2468.825657][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.825657][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.825657][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.825657][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.825657][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.825657][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.825657][ T72] [ 2468.827392][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2468.827706][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2468.827706][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.827706][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.827706][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.827706][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.827706][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.827706][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.827706][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.827706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.827706][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.827706][ T72] netlink_unicast+0x449/0x710 [ 2468.827706][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.827706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.827706][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.827706][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.827706][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.827706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.827706][ T72] [ 2468.829754][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2468.829754][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.829754][ T72] ipv6_find_idev+0x102/0x170 [ 2468.829754][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.829754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.829754][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.829754][ T72] netlink_unicast+0x449/0x710 [ 2468.829754][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.829754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.829754][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.829754][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.829754][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.829754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.829754][ T72] [ 2468.831472][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2468.831472][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.831472][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.831472][ T72] ipv6_find_idev+0x102/0x170 [ 2468.831472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.831472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.831472][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.831472][ T72] netlink_unicast+0x449/0x710 [ 2468.831472][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.831472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.831472][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.831472][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.831472][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.831472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.831472][ T72] [ 2468.833432][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2468.833739][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2468.833739][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.833739][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.833739][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.833739][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.833739][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.833739][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.833739][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.833739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.833739][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.833739][ T72] netlink_unicast+0x449/0x710 [ 2468.833739][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.833739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.833739][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.833739][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.833739][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.833739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.833739][ T72] [ 2468.835913][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2468.835913][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.835913][ T72] ipv6_find_idev+0x102/0x170 [ 2468.835913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.835913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.835913][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.835913][ T72] netlink_unicast+0x449/0x710 [ 2468.835913][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.835913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.835913][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.835913][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.835913][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.835913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.835913][ T72] [ 2468.837651][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2468.837651][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.837651][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.837651][ T72] ipv6_find_idev+0x102/0x170 [ 2468.837651][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.837651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.837651][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.837651][ T72] netlink_unicast+0x449/0x710 [ 2468.837651][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.837651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.837651][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.837651][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.837651][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.837651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.837651][ T72] [ 2468.839558][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2468.839883][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2468.839883][ T72] netdev_get_by_index+0x5e/0x80 [ 2468.839883][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2468.839883][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2468.839883][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2468.839883][ T72] ipv6_add_addr+0x411/0x2000 [ 2468.839883][ T72] inet6_addr_add+0x30e/0xa40 [ 2468.839883][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2468.839883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.839883][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.839883][ T72] netlink_unicast+0x449/0x710 [ 2468.839883][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.839883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.839883][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.839883][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.839883][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.839883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.839883][ T72] [ 2468.842050][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2468.842050][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2468.842050][ T72] ipv6_find_idev+0x102/0x170 [ 2468.842050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.842050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.842050][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.842050][ T72] netlink_unicast+0x449/0x710 [ 2468.842050][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.842050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.842050][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.842050][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.842050][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.842050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.842050][ T72] [ 2468.843817][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2468.843817][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2468.843817][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2468.843817][ T72] ipv6_find_idev+0x102/0x170 [ 2468.843817][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2468.843817][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2468.843817][ T72] netlink_rcv_skb+0x130/0x360 [ 2468.843817][ T72] netlink_unicast+0x449/0x710 [ 2468.843817][ T72] netlink_sendmsg+0x723/0xbe0 [ 2468.843817][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2468.843817][ T72] ___sys_sendmsg+0xee/0x170 [ 2468.843817][ T72] __sys_sendmsg+0xcd/0x170 [ 2468.843817][ T72] do_syscall_64+0xc6/0x1e0 [ 2468.843817][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2468.843817][ T72] [ 2479.086838][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2479.087324][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2479.087324][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.087324][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.087324][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.087324][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.087324][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.087324][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.087324][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.087324][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.087324][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.087324][ T72] netlink_unicast+0x449/0x710 [ 2479.087324][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.087324][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.087324][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.087324][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.087324][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.087324][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.087324][ T72] [ 2479.089341][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2479.089341][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.089341][ T72] ipv6_find_idev+0x102/0x170 [ 2479.089341][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.089341][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.089341][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.089341][ T72] netlink_unicast+0x449/0x710 [ 2479.089341][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.089341][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.089341][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.089341][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.089341][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.089341][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.089341][ T72] [ 2479.090888][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2479.090888][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.090888][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.090888][ T72] ipv6_find_idev+0x102/0x170 [ 2479.090888][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.090888][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.090888][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.090888][ T72] netlink_unicast+0x449/0x710 [ 2479.090888][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.090888][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.090888][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.090888][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.090888][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.090888][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.090888][ T72] [ 2479.092594][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2479.092890][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2479.092890][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.092890][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.092890][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.092890][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.092890][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.092890][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.092890][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.092890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.092890][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.092890][ T72] netlink_unicast+0x449/0x710 [ 2479.092890][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.092890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.092890][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.092890][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.092890][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.092890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.092890][ T72] [ 2479.094891][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2479.094891][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.094891][ T72] ipv6_find_idev+0x102/0x170 [ 2479.094891][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.094891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.094891][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.094891][ T72] netlink_unicast+0x449/0x710 [ 2479.094891][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.094891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.094891][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.094891][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.094891][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.094891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.094891][ T72] [ 2479.096421][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2479.096421][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.096421][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.096421][ T72] ipv6_find_idev+0x102/0x170 [ 2479.096421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.096421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.096421][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.096421][ T72] netlink_unicast+0x449/0x710 [ 2479.096421][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.096421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.096421][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.096421][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.096421][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.096421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.096421][ T72] [ 2479.098108][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2479.098374][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2479.098374][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.098374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.098374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.098374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.098374][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.098374][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.098374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.098374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.098374][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.098374][ T72] netlink_unicast+0x449/0x710 [ 2479.098374][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.098374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.098374][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.098374][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.098374][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.098374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.098374][ T72] [ 2479.100362][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2479.100362][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.100362][ T72] ipv6_find_idev+0x102/0x170 [ 2479.100362][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.100362][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.100362][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.100362][ T72] netlink_unicast+0x449/0x710 [ 2479.100362][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.100362][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.100362][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.100362][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.100362][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.100362][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.100362][ T72] [ 2479.101887][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2479.101887][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.101887][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.101887][ T72] ipv6_find_idev+0x102/0x170 [ 2479.101887][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.101887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.101887][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.101887][ T72] netlink_unicast+0x449/0x710 [ 2479.101887][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.101887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.101887][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.101887][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.101887][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.101887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.101887][ T72] [ 2479.103572][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2479.104277][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2479.104277][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.104277][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.104277][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.104277][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.104277][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.104277][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.104277][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.104277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.104277][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.104277][ T72] netlink_unicast+0x449/0x710 [ 2479.104277][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.104277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.104277][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.104277][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.104277][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.104277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.104277][ T72] [ 2479.106253][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2479.106253][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.106253][ T72] ipv6_find_idev+0x102/0x170 [ 2479.106253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.106253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.106253][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.106253][ T72] netlink_unicast+0x449/0x710 [ 2479.106253][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.106253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.106253][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.106253][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.106253][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.106253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.106253][ T72] [ 2479.107777][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2479.107777][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.107777][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.107777][ T72] ipv6_find_idev+0x102/0x170 [ 2479.107777][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.107777][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.107777][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.107777][ T72] netlink_unicast+0x449/0x710 [ 2479.107777][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.107777][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.107777][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.107777][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.107777][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.107777][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.107777][ T72] [ 2479.109506][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2479.109827][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2479.109827][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.109827][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.109827][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.109827][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.109827][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.109827][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.109827][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.109827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.109827][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.109827][ T72] netlink_unicast+0x449/0x710 [ 2479.109827][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.109827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.109827][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.109827][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.109827][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.109827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.109827][ T72] [ 2479.111817][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2479.111817][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.111817][ T72] ipv6_find_idev+0x102/0x170 [ 2479.111817][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.111817][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.111817][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.111817][ T72] netlink_unicast+0x449/0x710 [ 2479.111817][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.111817][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.111817][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.111817][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.111817][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.111817][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.111817][ T72] [ 2479.113434][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2479.113434][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.113434][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.113434][ T72] ipv6_find_idev+0x102/0x170 [ 2479.113434][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.113434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.113434][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.113434][ T72] netlink_unicast+0x449/0x710 [ 2479.113434][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.113434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.113434][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.113434][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.113434][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.113434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.113434][ T72] [ 2479.115155][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2479.115467][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2479.115467][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.115467][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.115467][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.115467][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.115467][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.115467][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.115467][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.115467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.115467][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.115467][ T72] netlink_unicast+0x449/0x710 [ 2479.115467][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.115467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.115467][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.115467][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.115467][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.115467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.115467][ T72] [ 2479.117512][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2479.117512][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.117512][ T72] ipv6_find_idev+0x102/0x170 [ 2479.117512][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.117512][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.117512][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.117512][ T72] netlink_unicast+0x449/0x710 [ 2479.117512][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.117512][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.117512][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.117512][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.117512][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.117512][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.117512][ T72] [ 2479.119286][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2479.119286][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.119286][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.119286][ T72] ipv6_find_idev+0x102/0x170 [ 2479.119286][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.119286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.119286][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.119286][ T72] netlink_unicast+0x449/0x710 [ 2479.119286][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.119286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.119286][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.119286][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.119286][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.119286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.119286][ T72] [ 2479.121191][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2479.121495][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2479.121495][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.121495][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.121495][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.121495][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.121495][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.121495][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.121495][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.121495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.121495][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.121495][ T72] netlink_unicast+0x449/0x710 [ 2479.121495][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.121495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.121495][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.121495][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.121495][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.121495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.121495][ T72] [ 2479.123694][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2479.123694][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.123694][ T72] ipv6_find_idev+0x102/0x170 [ 2479.123694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.123694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.123694][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.123694][ T72] netlink_unicast+0x449/0x710 [ 2479.123694][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.123694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.123694][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.123694][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.123694][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.123694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.123694][ T72] [ 2479.125405][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2479.125405][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.125405][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.125405][ T72] ipv6_find_idev+0x102/0x170 [ 2479.125405][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.125405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.125405][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.125405][ T72] netlink_unicast+0x449/0x710 [ 2479.125405][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.125405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.125405][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.125405][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.125405][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.125405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.125405][ T72] [ 2479.127302][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2479.127613][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2479.127613][ T72] netdev_get_by_index+0x5e/0x80 [ 2479.127613][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2479.127613][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2479.127613][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2479.127613][ T72] ipv6_add_addr+0x411/0x2000 [ 2479.127613][ T72] inet6_addr_add+0x30e/0xa40 [ 2479.127613][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2479.127613][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.127613][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.127613][ T72] netlink_unicast+0x449/0x710 [ 2479.127613][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.127613][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.127613][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.127613][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.127613][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.127613][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.127613][ T72] [ 2479.129789][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2479.129789][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2479.129789][ T72] ipv6_find_idev+0x102/0x170 [ 2479.129789][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.129789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.129789][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.129789][ T72] netlink_unicast+0x449/0x710 [ 2479.129789][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.129789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.129789][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.129789][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.129789][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.129789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.129789][ T72] [ 2479.131556][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2479.131556][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2479.131556][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2479.131556][ T72] ipv6_find_idev+0x102/0x170 [ 2479.131556][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2479.131556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2479.131556][ T72] netlink_rcv_skb+0x130/0x360 [ 2479.131556][ T72] netlink_unicast+0x449/0x710 [ 2479.131556][ T72] netlink_sendmsg+0x723/0xbe0 [ 2479.131556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2479.131556][ T72] ___sys_sendmsg+0xee/0x170 [ 2479.131556][ T72] __sys_sendmsg+0xcd/0x170 [ 2479.131556][ T72] do_syscall_64+0xc6/0x1e0 [ 2479.131556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2479.131556][ T72] [ 2489.374810][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2489.375298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2489.375298][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.375298][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.375298][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.375298][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.375298][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.375298][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.375298][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.375298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.375298][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.375298][ T72] netlink_unicast+0x449/0x710 [ 2489.375298][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.375298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.375298][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.375298][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.375298][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.375298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.375298][ T72] [ 2489.377325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2489.377325][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.377325][ T72] ipv6_find_idev+0x102/0x170 [ 2489.377325][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.377325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.377325][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.377325][ T72] netlink_unicast+0x449/0x710 [ 2489.377325][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.377325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.377325][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.377325][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.377325][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.377325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.377325][ T72] [ 2489.378878][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2489.378878][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.378878][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.378878][ T72] ipv6_find_idev+0x102/0x170 [ 2489.378878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.378878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.378878][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.378878][ T72] netlink_unicast+0x449/0x710 [ 2489.378878][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.378878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.378878][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.378878][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.378878][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.378878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.378878][ T72] [ 2489.380581][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2489.380860][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2489.380860][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.380860][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.380860][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.380860][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.380860][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.380860][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.380860][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.380860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.380860][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.380860][ T72] netlink_unicast+0x449/0x710 [ 2489.380860][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.380860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.380860][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.380860][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.380860][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.380860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.380860][ T72] [ 2489.382854][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2489.382854][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.382854][ T72] ipv6_find_idev+0x102/0x170 [ 2489.382854][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.382854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.382854][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.382854][ T72] netlink_unicast+0x449/0x710 [ 2489.382854][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.382854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.382854][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.382854][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.382854][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.382854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.382854][ T72] [ 2489.384382][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2489.384382][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.384382][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.384382][ T72] ipv6_find_idev+0x102/0x170 [ 2489.384382][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.384382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.384382][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.384382][ T72] netlink_unicast+0x449/0x710 [ 2489.384382][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.384382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.384382][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.384382][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.384382][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.384382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.384382][ T72] [ 2489.386059][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2489.386865][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2489.386865][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.386865][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.386865][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.386865][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.386865][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.386865][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.386865][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.386865][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.386865][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.386865][ T72] netlink_unicast+0x449/0x710 [ 2489.386865][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.386865][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.386865][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.386865][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.386865][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.386865][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.386865][ T72] [ 2489.388853][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2489.388853][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.388853][ T72] ipv6_find_idev+0x102/0x170 [ 2489.388853][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.388853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.388853][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.388853][ T72] netlink_unicast+0x449/0x710 [ 2489.388853][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.388853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.388853][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.388853][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.388853][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.388853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.388853][ T72] [ 2489.390384][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2489.390384][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.390384][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.390384][ T72] ipv6_find_idev+0x102/0x170 [ 2489.390384][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.390384][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.390384][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.390384][ T72] netlink_unicast+0x449/0x710 [ 2489.390384][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.390384][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.390384][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.390384][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.390384][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.390384][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.390384][ T72] [ 2489.392061][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2489.392325][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2489.392325][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.392325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.392325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.392325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.392325][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.392325][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.392325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.392325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.392325][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.392325][ T72] netlink_unicast+0x449/0x710 [ 2489.392325][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.392325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.392325][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.392325][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.392325][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.392325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.392325][ T72] [ 2489.394409][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2489.394409][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.394409][ T72] ipv6_find_idev+0x102/0x170 [ 2489.394409][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.394409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.394409][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.394409][ T72] netlink_unicast+0x449/0x710 [ 2489.394409][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.394409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.394409][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.394409][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.394409][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.394409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.394409][ T72] [ 2489.395941][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2489.395941][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.395941][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.395941][ T72] ipv6_find_idev+0x102/0x170 [ 2489.395941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.395941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.395941][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.395941][ T72] netlink_unicast+0x449/0x710 [ 2489.395941][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.395941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.395941][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.395941][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.395941][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.395941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.395941][ T72] [ 2489.398038][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2489.398633][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2489.398633][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.398633][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.398633][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.398633][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.398633][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.398633][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.398633][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.398633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.398633][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.398633][ T72] netlink_unicast+0x449/0x710 [ 2489.398633][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.398633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.398633][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.398633][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.398633][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.398633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.398633][ T72] [ 2489.400622][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2489.400622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.400622][ T72] ipv6_find_idev+0x102/0x170 [ 2489.400622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.400622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.400622][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.400622][ T72] netlink_unicast+0x449/0x710 [ 2489.400622][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.400622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.400622][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.400622][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.400622][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.400622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.400622][ T72] [ 2489.402155][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2489.402155][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.402155][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.402155][ T72] ipv6_find_idev+0x102/0x170 [ 2489.402155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.402155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.402155][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.402155][ T72] netlink_unicast+0x449/0x710 [ 2489.402155][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.402155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.402155][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.402155][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.402155][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.402155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.402155][ T72] [ 2489.404212][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2489.404488][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2489.404488][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.404488][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.404488][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.404488][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.404488][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.404488][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.404488][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.404488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.404488][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.404488][ T72] netlink_unicast+0x449/0x710 [ 2489.404488][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.404488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.404488][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.404488][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.404488][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.404488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.404488][ T72] [ 2489.406477][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2489.406477][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.406477][ T72] ipv6_find_idev+0x102/0x170 [ 2489.406477][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.406477][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.406477][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.406477][ T72] netlink_unicast+0x449/0x710 [ 2489.406477][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.406477][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.406477][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.406477][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.406477][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.406477][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.406477][ T72] [ 2489.408065][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2489.408065][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.408065][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.408065][ T72] ipv6_find_idev+0x102/0x170 [ 2489.408065][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.408065][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.408065][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.408065][ T72] netlink_unicast+0x449/0x710 [ 2489.408065][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.408065][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.408065][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.408065][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.408065][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.408065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.408065][ T72] [ 2489.410095][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2489.410405][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2489.410405][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.410405][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.410405][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.410405][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.410405][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.410405][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.410405][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.410405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.410405][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.410405][ T72] netlink_unicast+0x449/0x710 [ 2489.410405][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.410405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.410405][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.410405][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.410405][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.410405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.410405][ T72] [ 2489.412567][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2489.412567][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.412567][ T72] ipv6_find_idev+0x102/0x170 [ 2489.412567][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.412567][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.412567][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.412567][ T72] netlink_unicast+0x449/0x710 [ 2489.412567][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.412567][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.412567][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.412567][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.412567][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.412567][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.412567][ T72] [ 2489.414279][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2489.414279][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.414279][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.414279][ T72] ipv6_find_idev+0x102/0x170 [ 2489.414279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.414279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.414279][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.414279][ T72] netlink_unicast+0x449/0x710 [ 2489.414279][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.414279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.414279][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.414279][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.414279][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.414279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.414279][ T72] [ 2489.416177][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2489.416488][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2489.416488][ T72] netdev_get_by_index+0x5e/0x80 [ 2489.416488][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2489.416488][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2489.416488][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2489.416488][ T72] ipv6_add_addr+0x411/0x2000 [ 2489.416488][ T72] inet6_addr_add+0x30e/0xa40 [ 2489.416488][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2489.416488][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.416488][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.416488][ T72] netlink_unicast+0x449/0x710 [ 2489.416488][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.416488][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.416488][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.416488][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.416488][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.416488][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.416488][ T72] [ 2489.418651][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2489.418651][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2489.418651][ T72] ipv6_find_idev+0x102/0x170 [ 2489.418651][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.418651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.418651][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.418651][ T72] netlink_unicast+0x449/0x710 [ 2489.418651][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.418651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.418651][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.418651][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.418651][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.418651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.418651][ T72] [ 2489.420428][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2489.420428][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2489.420428][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2489.420428][ T72] ipv6_find_idev+0x102/0x170 [ 2489.420428][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2489.420428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2489.420428][ T72] netlink_rcv_skb+0x130/0x360 [ 2489.420428][ T72] netlink_unicast+0x449/0x710 [ 2489.420428][ T72] netlink_sendmsg+0x723/0xbe0 [ 2489.420428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2489.420428][ T72] ___sys_sendmsg+0xee/0x170 [ 2489.420428][ T72] __sys_sendmsg+0xcd/0x170 [ 2489.420428][ T72] do_syscall_64+0xc6/0x1e0 [ 2489.420428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2489.420428][ T72] [ 2499.662932][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2499.663460][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2499.663460][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.663460][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.663460][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.663460][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.663460][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.663460][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.663460][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.663460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.663460][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.663460][ T72] netlink_unicast+0x449/0x710 [ 2499.663460][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.663460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.663460][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.663460][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.663460][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.663460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.663460][ T72] [ 2499.665446][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2499.665446][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.665446][ T72] ipv6_find_idev+0x102/0x170 [ 2499.665446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.665446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.665446][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.665446][ T72] netlink_unicast+0x449/0x710 [ 2499.665446][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.665446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.665446][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.665446][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.665446][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.665446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.665446][ T72] [ 2499.666993][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2499.666993][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.666993][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.666993][ T72] ipv6_find_idev+0x102/0x170 [ 2499.666993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.666993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.666993][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.666993][ T72] netlink_unicast+0x449/0x710 [ 2499.666993][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.666993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.666993][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.666993][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.666993][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.666993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.666993][ T72] [ 2499.668706][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2499.668993][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2499.668993][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.668993][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.668993][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.668993][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.668993][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.668993][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.668993][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.668993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.668993][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.668993][ T72] netlink_unicast+0x449/0x710 [ 2499.668993][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.668993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.668993][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.668993][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.668993][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.668993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.668993][ T72] [ 2499.671009][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2499.671009][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.671009][ T72] ipv6_find_idev+0x102/0x170 [ 2499.671009][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.671009][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.671009][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.671009][ T72] netlink_unicast+0x449/0x710 [ 2499.671009][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.671009][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.671009][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.671009][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.671009][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.671009][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.671009][ T72] [ 2499.672554][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2499.672554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.672554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.672554][ T72] ipv6_find_idev+0x102/0x170 [ 2499.672554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.672554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.672554][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.672554][ T72] netlink_unicast+0x449/0x710 [ 2499.672554][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.672554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.672554][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.672554][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.672554][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.672554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.672554][ T72] [ 2499.674238][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2499.674500][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2499.674500][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.674500][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.674500][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.674500][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.674500][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.674500][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.674500][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.674500][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.674500][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.674500][ T72] netlink_unicast+0x449/0x710 [ 2499.674500][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.674500][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.674500][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.674500][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.674500][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.674500][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.674500][ T72] [ 2499.676510][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2499.676510][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.676510][ T72] ipv6_find_idev+0x102/0x170 [ 2499.676510][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.676510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.676510][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.676510][ T72] netlink_unicast+0x449/0x710 [ 2499.676510][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.676510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.676510][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.676510][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.676510][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.676510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.676510][ T72] [ 2499.678042][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2499.678042][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.678042][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.678042][ T72] ipv6_find_idev+0x102/0x170 [ 2499.678042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.678042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.678042][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.678042][ T72] netlink_unicast+0x449/0x710 [ 2499.678042][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.678042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.678042][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.678042][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.678042][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.678042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.678042][ T72] [ 2499.679715][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2499.680413][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2499.680413][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.680413][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.680413][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.680413][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.680413][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.680413][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.680413][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.680413][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.680413][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.680413][ T72] netlink_unicast+0x449/0x710 [ 2499.680413][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.680413][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.680413][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.680413][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.680413][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.680413][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.680413][ T72] [ 2499.682894][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2499.682894][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.682894][ T72] ipv6_find_idev+0x102/0x170 [ 2499.682894][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.682894][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.682894][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.682894][ T72] netlink_unicast+0x449/0x710 [ 2499.682894][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.682894][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.682894][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.682894][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.682894][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.682894][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.682894][ T72] [ 2499.684428][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2499.684428][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.684428][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.684428][ T72] ipv6_find_idev+0x102/0x170 [ 2499.684428][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.684428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.684428][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.684428][ T72] netlink_unicast+0x449/0x710 [ 2499.684428][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.684428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.684428][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.684428][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.684428][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.684428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.684428][ T72] [ 2499.686159][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2499.686822][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2499.686822][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.686822][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.686822][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.686822][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.686822][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.686822][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.686822][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.686822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.686822][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.686822][ T72] netlink_unicast+0x449/0x710 [ 2499.686822][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.686822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.686822][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.686822][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.686822][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.686822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.686822][ T72] [ 2499.688830][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2499.688830][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.688830][ T72] ipv6_find_idev+0x102/0x170 [ 2499.688830][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.688830][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.688830][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.688830][ T72] netlink_unicast+0x449/0x710 [ 2499.688830][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.688830][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.688830][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.688830][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.688830][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.688830][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.688830][ T72] [ 2499.690373][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2499.690373][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.690373][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.690373][ T72] ipv6_find_idev+0x102/0x170 [ 2499.690373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.690373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.690373][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.690373][ T72] netlink_unicast+0x449/0x710 [ 2499.690373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.690373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.690373][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.690373][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.690373][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.690373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.690373][ T72] [ 2499.692099][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2499.692365][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2499.692365][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.692365][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.692365][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.692365][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.692365][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.692365][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.692365][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.692365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.692365][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.692365][ T72] netlink_unicast+0x449/0x710 [ 2499.692365][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.692365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.692365][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.692365][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.692365][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.692365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.692365][ T72] [ 2499.694498][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2499.694498][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.694498][ T72] ipv6_find_idev+0x102/0x170 [ 2499.694498][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.694498][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.694498][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.694498][ T72] netlink_unicast+0x449/0x710 [ 2499.694498][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.694498][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.694498][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.694498][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.694498][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.694498][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.694498][ T72] [ 2499.696198][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2499.696198][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.696198][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.696198][ T72] ipv6_find_idev+0x102/0x170 [ 2499.696198][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.696198][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.696198][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.696198][ T72] netlink_unicast+0x449/0x710 [ 2499.696198][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.696198][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.696198][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.696198][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.696198][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.696198][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.696198][ T72] [ 2499.698165][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2499.698426][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2499.698426][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.698426][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.698426][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.698426][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.698426][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.698426][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.698426][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.698426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.698426][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.698426][ T72] netlink_unicast+0x449/0x710 [ 2499.698426][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.698426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.698426][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.698426][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.698426][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.698426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.698426][ T72] [ 2499.700630][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2499.700630][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.700630][ T72] ipv6_find_idev+0x102/0x170 [ 2499.700630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.700630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.700630][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.700630][ T72] netlink_unicast+0x449/0x710 [ 2499.700630][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.700630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.700630][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.700630][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.700630][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.700630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.700630][ T72] [ 2499.702326][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2499.702326][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.702326][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.702326][ T72] ipv6_find_idev+0x102/0x170 [ 2499.702326][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.702326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.702326][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.702326][ T72] netlink_unicast+0x449/0x710 [ 2499.702326][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.702326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.702326][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.702326][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.702326][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.702326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.702326][ T72] [ 2499.704605][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2499.704928][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2499.704928][ T72] netdev_get_by_index+0x5e/0x80 [ 2499.704928][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2499.704928][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2499.704928][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2499.704928][ T72] ipv6_add_addr+0x411/0x2000 [ 2499.704928][ T72] inet6_addr_add+0x30e/0xa40 [ 2499.704928][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2499.704928][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.704928][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.704928][ T72] netlink_unicast+0x449/0x710 [ 2499.704928][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.704928][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.704928][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.704928][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.704928][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.704928][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.704928][ T72] [ 2499.707106][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2499.707106][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2499.707106][ T72] ipv6_find_idev+0x102/0x170 [ 2499.707106][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.707106][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.707106][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.707106][ T72] netlink_unicast+0x449/0x710 [ 2499.707106][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.707106][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.707106][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.707106][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.707106][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.707106][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.707106][ T72] [ 2499.708887][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2499.708887][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2499.708887][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2499.708887][ T72] ipv6_find_idev+0x102/0x170 [ 2499.708887][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2499.708887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2499.708887][ T72] netlink_rcv_skb+0x130/0x360 [ 2499.708887][ T72] netlink_unicast+0x449/0x710 [ 2499.708887][ T72] netlink_sendmsg+0x723/0xbe0 [ 2499.708887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2499.708887][ T72] ___sys_sendmsg+0xee/0x170 [ 2499.708887][ T72] __sys_sendmsg+0xcd/0x170 [ 2499.708887][ T72] do_syscall_64+0xc6/0x1e0 [ 2499.708887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2499.708887][ T72] [ 2509.910806][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2509.911252][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2509.911252][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.911252][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.911252][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.911252][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.911252][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.911252][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.911252][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.911252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.911252][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.911252][ T72] netlink_unicast+0x449/0x710 [ 2509.911252][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.911252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.911252][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.911252][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.911252][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.911252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.911252][ T72] [ 2509.913428][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2509.913428][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.913428][ T72] ipv6_find_idev+0x102/0x170 [ 2509.913428][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.913428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.913428][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.913428][ T72] netlink_unicast+0x449/0x710 [ 2509.913428][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.913428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.913428][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.913428][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.913428][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.913428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.913428][ T72] [ 2509.915097][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2509.915097][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.915097][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.915097][ T72] ipv6_find_idev+0x102/0x170 [ 2509.915097][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.915097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.915097][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.915097][ T72] netlink_unicast+0x449/0x710 [ 2509.915097][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.915097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.915097][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.915097][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.915097][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.915097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.915097][ T72] [ 2509.916932][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2509.917217][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2509.917217][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.917217][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.917217][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.917217][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.917217][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.917217][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.917217][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.917217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.917217][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.917217][ T72] netlink_unicast+0x449/0x710 [ 2509.917217][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.917217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.917217][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.917217][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.917217][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.917217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.917217][ T72] [ 2509.919382][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2509.919382][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.919382][ T72] ipv6_find_idev+0x102/0x170 [ 2509.919382][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.919382][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.919382][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.919382][ T72] netlink_unicast+0x449/0x710 [ 2509.919382][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.919382][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.919382][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.919382][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.919382][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.919382][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.919382][ T72] [ 2509.921029][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2509.921029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.921029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.921029][ T72] ipv6_find_idev+0x102/0x170 [ 2509.921029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.921029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.921029][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.921029][ T72] netlink_unicast+0x449/0x710 [ 2509.921029][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.921029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.921029][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.921029][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.921029][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.921029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.921029][ T72] [ 2509.922827][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2509.923104][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2509.923104][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.923104][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.923104][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.923104][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.923104][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.923104][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.923104][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.923104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.923104][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.923104][ T72] netlink_unicast+0x449/0x710 [ 2509.923104][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.923104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.923104][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.923104][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.923104][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.923104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.923104][ T72] [ 2509.925255][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2509.925255][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.925255][ T72] ipv6_find_idev+0x102/0x170 [ 2509.925255][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.925255][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.925255][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.925255][ T72] netlink_unicast+0x449/0x710 [ 2509.925255][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.925255][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.925255][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.925255][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.925255][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.925255][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.925255][ T72] [ 2509.926906][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2509.926906][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.926906][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.926906][ T72] ipv6_find_idev+0x102/0x170 [ 2509.926906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.926906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.926906][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.926906][ T72] netlink_unicast+0x449/0x710 [ 2509.926906][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.926906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.926906][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.926906][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.926906][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.926906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.926906][ T72] [ 2509.928696][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2509.929428][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2509.929428][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.929428][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.929428][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.929428][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.929428][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.929428][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.929428][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.929428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.929428][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.929428][ T72] netlink_unicast+0x449/0x710 [ 2509.929428][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.929428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.929428][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.929428][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.929428][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.929428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.929428][ T72] [ 2509.931571][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2509.931571][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.931571][ T72] ipv6_find_idev+0x102/0x170 [ 2509.931571][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.931571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.931571][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.931571][ T72] netlink_unicast+0x449/0x710 [ 2509.931571][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.931571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.931571][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.931571][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.931571][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.931571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.931571][ T72] [ 2509.933229][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2509.933229][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.933229][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.933229][ T72] ipv6_find_idev+0x102/0x170 [ 2509.933229][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.933229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.933229][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.933229][ T72] netlink_unicast+0x449/0x710 [ 2509.933229][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.933229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.933229][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.933229][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.933229][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.933229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.933229][ T72] [ 2509.935045][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2509.935306][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2509.935306][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.935306][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.935306][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.935306][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.935306][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.935306][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.935306][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.935306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.935306][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.935306][ T72] netlink_unicast+0x449/0x710 [ 2509.935306][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.935306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.935306][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.935306][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.935306][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.935306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.935306][ T72] [ 2509.937273][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2509.937273][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.937273][ T72] ipv6_find_idev+0x102/0x170 [ 2509.937273][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.937273][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.937273][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.937273][ T72] netlink_unicast+0x449/0x710 [ 2509.937273][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.937273][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.937273][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.937273][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.937273][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.937273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.937273][ T72] [ 2509.938885][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2509.938885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.938885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.938885][ T72] ipv6_find_idev+0x102/0x170 [ 2509.938885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.938885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.938885][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.938885][ T72] netlink_unicast+0x449/0x710 [ 2509.938885][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.938885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.938885][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.938885][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.938885][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.938885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.938885][ T72] [ 2509.940586][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2509.940902][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2509.940902][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.940902][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.940902][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.940902][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.940902][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.940902][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.940902][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.940902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.940902][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.940902][ T72] netlink_unicast+0x449/0x710 [ 2509.940902][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.940902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.940902][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.940902][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.940902][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.940902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.940902][ T72] [ 2509.942913][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2509.942913][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.942913][ T72] ipv6_find_idev+0x102/0x170 [ 2509.942913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.942913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.942913][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.942913][ T72] netlink_unicast+0x449/0x710 [ 2509.942913][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.942913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.942913][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.942913][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.942913][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.942913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.942913][ T72] [ 2509.944596][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2509.944596][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.944596][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.944596][ T72] ipv6_find_idev+0x102/0x170 [ 2509.944596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.944596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.944596][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.944596][ T72] netlink_unicast+0x449/0x710 [ 2509.944596][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.944596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.944596][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.944596][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.944596][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.944596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.944596][ T72] [ 2509.946456][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2509.946715][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2509.946715][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.946715][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.946715][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.946715][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.946715][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.946715][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.946715][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.946715][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.946715][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.946715][ T72] netlink_unicast+0x449/0x710 [ 2509.946715][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.946715][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.946715][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.946715][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.946715][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.946715][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.946715][ T72] [ 2509.948963][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2509.948963][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.948963][ T72] ipv6_find_idev+0x102/0x170 [ 2509.948963][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.948963][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.948963][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.948963][ T72] netlink_unicast+0x449/0x710 [ 2509.948963][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.948963][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.948963][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.948963][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.948963][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.948963][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.948963][ T72] [ 2509.950656][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2509.950656][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.950656][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.950656][ T72] ipv6_find_idev+0x102/0x170 [ 2509.950656][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.950656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.950656][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.950656][ T72] netlink_unicast+0x449/0x710 [ 2509.950656][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.950656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.950656][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.950656][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.950656][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.950656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.950656][ T72] [ 2509.952513][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2509.952771][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2509.952771][ T72] netdev_get_by_index+0x5e/0x80 [ 2509.952771][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2509.952771][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2509.952771][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2509.952771][ T72] ipv6_add_addr+0x411/0x2000 [ 2509.952771][ T72] inet6_addr_add+0x30e/0xa40 [ 2509.952771][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2509.952771][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.952771][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.952771][ T72] netlink_unicast+0x449/0x710 [ 2509.952771][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.952771][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.952771][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.952771][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.952771][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.952771][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.952771][ T72] [ 2509.954960][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2509.954960][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2509.954960][ T72] ipv6_find_idev+0x102/0x170 [ 2509.954960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.954960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.954960][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.954960][ T72] netlink_unicast+0x449/0x710 [ 2509.954960][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.954960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.954960][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.954960][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.954960][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.954960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.954960][ T72] [ 2509.956636][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2509.956636][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2509.956636][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2509.956636][ T72] ipv6_find_idev+0x102/0x170 [ 2509.956636][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2509.956636][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2509.956636][ T72] netlink_rcv_skb+0x130/0x360 [ 2509.956636][ T72] netlink_unicast+0x449/0x710 [ 2509.956636][ T72] netlink_sendmsg+0x723/0xbe0 [ 2509.956636][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2509.956636][ T72] ___sys_sendmsg+0xee/0x170 [ 2509.956636][ T72] __sys_sendmsg+0xcd/0x170 [ 2509.956636][ T72] do_syscall_64+0xc6/0x1e0 [ 2509.956636][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2509.956636][ T72] [ 2519.958906][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2519.959397][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2519.959397][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.959397][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.959397][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.959397][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.959397][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.959397][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.959397][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.959397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.959397][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.959397][ T72] netlink_unicast+0x449/0x710 [ 2519.959397][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.959397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.959397][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.959397][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.959397][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.959397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.959397][ T72] [ 2519.961416][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2519.961416][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2519.961416][ T72] ipv6_find_idev+0x102/0x170 [ 2519.961416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.961416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.961416][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.961416][ T72] netlink_unicast+0x449/0x710 [ 2519.961416][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.961416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.961416][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.961416][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.961416][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.961416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.961416][ T72] [ 2519.962954][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2519.962954][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2519.962954][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2519.962954][ T72] ipv6_find_idev+0x102/0x170 [ 2519.962954][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.962954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.962954][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.962954][ T72] netlink_unicast+0x449/0x710 [ 2519.962954][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.962954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.962954][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.962954][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.962954][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.962954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.962954][ T72] [ 2519.964650][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2519.964948][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2519.964948][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.964948][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.964948][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.964948][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.964948][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.964948][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.964948][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.964948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.964948][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.964948][ T72] netlink_unicast+0x449/0x710 [ 2519.964948][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.964948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.964948][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.964948][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.964948][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.964948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.964948][ T72] [ 2519.966958][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2519.966958][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2519.966958][ T72] ipv6_find_idev+0x102/0x170 [ 2519.966958][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.966958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.966958][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.966958][ T72] netlink_unicast+0x449/0x710 [ 2519.966958][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.966958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.966958][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.966958][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.966958][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.966958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.966958][ T72] [ 2519.968493][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2519.968493][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2519.968493][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2519.968493][ T72] ipv6_find_idev+0x102/0x170 [ 2519.968493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.968493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.968493][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.968493][ T72] netlink_unicast+0x449/0x710 [ 2519.968493][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.968493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.968493][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.968493][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.968493][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.968493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.968493][ T72] [ 2519.970188][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2519.970454][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2519.970454][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.970454][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.970454][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.970454][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.970454][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.970454][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.970454][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.970454][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.970454][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.970454][ T72] netlink_unicast+0x449/0x710 [ 2519.970454][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.970454][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.970454][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.970454][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.970454][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.970454][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.970454][ T72] [ 2519.972446][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2519.972446][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2519.972446][ T72] ipv6_find_idev+0x102/0x170 [ 2519.972446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.972446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.972446][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.972446][ T72] netlink_unicast+0x449/0x710 [ 2519.972446][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.972446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.972446][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.972446][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.972446][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.972446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.972446][ T72] [ 2519.973995][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2519.973995][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2519.973995][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2519.973995][ T72] ipv6_find_idev+0x102/0x170 [ 2519.973995][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.973995][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.973995][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.973995][ T72] netlink_unicast+0x449/0x710 [ 2519.973995][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.973995][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.973995][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.973995][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.973995][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.973995][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.973995][ T72] [ 2519.975658][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2519.976359][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2519.976359][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.976359][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.976359][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.976359][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.976359][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.976359][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.976359][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.976359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.976359][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.976359][ T72] netlink_unicast+0x449/0x710 [ 2519.976359][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.976359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.976359][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.976359][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.976359][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.976359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.976359][ T72] [ 2519.978370][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2519.978370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2519.978370][ T72] ipv6_find_idev+0x102/0x170 [ 2519.978370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.978370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.978370][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.978370][ T72] netlink_unicast+0x449/0x710 [ 2519.978370][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.978370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.978370][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.978370][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.978370][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.978370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.978370][ T72] [ 2519.979906][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2519.979906][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2519.979906][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2519.979906][ T72] ipv6_find_idev+0x102/0x170 [ 2519.979906][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.979906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.979906][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.979906][ T72] netlink_unicast+0x449/0x710 [ 2519.979906][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.979906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.979906][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.979906][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.979906][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.979906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.979906][ T72] [ 2519.981622][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2519.981934][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2519.981934][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.981934][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.981934][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.981934][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.981934][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.981934][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.981934][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.981934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.981934][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.981934][ T72] netlink_unicast+0x449/0x710 [ 2519.981934][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.981934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.981934][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.981934][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.981934][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.981934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.981934][ T72] [ 2519.983918][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2519.983918][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2519.983918][ T72] ipv6_find_idev+0x102/0x170 [ 2519.983918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.983918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.983918][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.983918][ T72] netlink_unicast+0x449/0x710 [ 2519.983918][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.983918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.983918][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.983918][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.983918][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.983918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.983918][ T72] [ 2519.985458][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2519.985458][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2519.985458][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2519.985458][ T72] ipv6_find_idev+0x102/0x170 [ 2519.985458][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.985458][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.985458][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.985458][ T72] netlink_unicast+0x449/0x710 [ 2519.985458][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.985458][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.985458][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.985458][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.985458][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.985458][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.985458][ T72] [ 2519.987174][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2519.987487][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2519.987487][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.987487][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.987487][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.987487][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.987487][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.987487][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.987487][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.987487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.987487][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.987487][ T72] netlink_unicast+0x449/0x710 [ 2519.987487][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.987487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.987487][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.987487][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.987487][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.987487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.987487][ T72] [ 2519.989535][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2519.989535][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2519.989535][ T72] ipv6_find_idev+0x102/0x170 [ 2519.989535][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.989535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.989535][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.989535][ T72] netlink_unicast+0x449/0x710 [ 2519.989535][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.989535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.989535][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.989535][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.989535][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.989535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.989535][ T72] [ 2519.991258][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2519.991258][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2519.991258][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2519.991258][ T72] ipv6_find_idev+0x102/0x170 [ 2519.991258][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.991258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.991258][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.991258][ T72] netlink_unicast+0x449/0x710 [ 2519.991258][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.991258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.991258][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.991258][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.991258][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.991258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.991258][ T72] [ 2519.993148][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2519.993460][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2519.993460][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.993460][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.993460][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.993460][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.993460][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.993460][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.993460][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.993460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.993460][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.993460][ T72] netlink_unicast+0x449/0x710 [ 2519.993460][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.993460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.993460][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.993460][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.993460][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.993460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.993460][ T72] [ 2519.995622][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2519.995622][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2519.995622][ T72] ipv6_find_idev+0x102/0x170 [ 2519.995622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.995622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.995622][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.995622][ T72] netlink_unicast+0x449/0x710 [ 2519.995622][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.995622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.995622][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.995622][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.995622][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.995622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.995622][ T72] [ 2519.997398][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2519.997398][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2519.997398][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2519.997398][ T72] ipv6_find_idev+0x102/0x170 [ 2519.997398][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2519.997398][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.997398][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.997398][ T72] netlink_unicast+0x449/0x710 [ 2519.997398][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.997398][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.997398][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.997398][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.997398][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.997398][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.997398][ T72] [ 2519.999301][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2519.999609][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2519.999609][ T72] netdev_get_by_index+0x5e/0x80 [ 2519.999609][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2519.999609][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2519.999609][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2519.999609][ T72] ipv6_add_addr+0x411/0x2000 [ 2519.999609][ T72] inet6_addr_add+0x30e/0xa40 [ 2519.999609][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2519.999609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2519.999609][ T72] netlink_rcv_skb+0x130/0x360 [ 2519.999609][ T72] netlink_unicast+0x449/0x710 [ 2519.999609][ T72] netlink_sendmsg+0x723/0xbe0 [ 2519.999609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2519.999609][ T72] ___sys_sendmsg+0xee/0x170 [ 2519.999609][ T72] __sys_sendmsg+0xcd/0x170 [ 2519.999609][ T72] do_syscall_64+0xc6/0x1e0 [ 2519.999609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2519.999609][ T72] [ 2520.001768][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2520.001768][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2520.001768][ T72] ipv6_find_idev+0x102/0x170 [ 2520.001768][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2520.001768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2520.001768][ T72] netlink_rcv_skb+0x130/0x360 [ 2520.001768][ T72] netlink_unicast+0x449/0x710 [ 2520.001768][ T72] netlink_sendmsg+0x723/0xbe0 [ 2520.001768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2520.001768][ T72] ___sys_sendmsg+0xee/0x170 [ 2520.001768][ T72] __sys_sendmsg+0xcd/0x170 [ 2520.001768][ T72] do_syscall_64+0xc6/0x1e0 [ 2520.001768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2520.001768][ T72] [ 2520.003486][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2520.003486][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2520.003486][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2520.003486][ T72] ipv6_find_idev+0x102/0x170 [ 2520.003486][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2520.003486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2520.003486][ T72] netlink_rcv_skb+0x130/0x360 [ 2520.003486][ T72] netlink_unicast+0x449/0x710 [ 2520.003486][ T72] netlink_sendmsg+0x723/0xbe0 [ 2520.003486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2520.003486][ T72] ___sys_sendmsg+0xee/0x170 [ 2520.003486][ T72] __sys_sendmsg+0xcd/0x170 [ 2520.003486][ T72] do_syscall_64+0xc6/0x1e0 [ 2520.003486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2520.003486][ T72] [ 2530.246856][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2530.247274][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2530.247274][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.247274][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.247274][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.247274][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.247274][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.247274][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.247274][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.247274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.247274][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.247274][ T72] netlink_unicast+0x449/0x710 [ 2530.247274][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.247274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.247274][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.247274][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.247274][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.247274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.247274][ T72] [ 2530.249316][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2530.249316][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.249316][ T72] ipv6_find_idev+0x102/0x170 [ 2530.249316][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.249316][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.249316][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.249316][ T72] netlink_unicast+0x449/0x710 [ 2530.249316][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.249316][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.249316][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.249316][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.249316][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.249316][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.249316][ T72] [ 2530.250860][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2530.250860][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.250860][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.250860][ T72] ipv6_find_idev+0x102/0x170 [ 2530.250860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.250860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.250860][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.250860][ T72] netlink_unicast+0x449/0x710 [ 2530.250860][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.250860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.250860][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.250860][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.250860][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.250860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.250860][ T72] [ 2530.252570][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2530.252854][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2530.252854][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.252854][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.252854][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.252854][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.252854][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.252854][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.252854][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.252854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.252854][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.252854][ T72] netlink_unicast+0x449/0x710 [ 2530.252854][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.252854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.252854][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.252854][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.252854][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.252854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.252854][ T72] [ 2530.254866][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2530.254866][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.254866][ T72] ipv6_find_idev+0x102/0x170 [ 2530.254866][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.254866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.254866][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.254866][ T72] netlink_unicast+0x449/0x710 [ 2530.254866][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.254866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.254866][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.254866][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.254866][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.254866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.254866][ T72] [ 2530.256403][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2530.256403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.256403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.256403][ T72] ipv6_find_idev+0x102/0x170 [ 2530.256403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.256403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.256403][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.256403][ T72] netlink_unicast+0x449/0x710 [ 2530.256403][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.256403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.256403][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.256403][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.256403][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.256403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.256403][ T72] [ 2530.258114][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2530.258381][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2530.258381][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.258381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.258381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.258381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.258381][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.258381][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.258381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.258381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.258381][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.258381][ T72] netlink_unicast+0x449/0x710 [ 2530.258381][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.258381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.258381][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.258381][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.258381][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.258381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.258381][ T72] [ 2530.260385][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2530.260385][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.260385][ T72] ipv6_find_idev+0x102/0x170 [ 2530.260385][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.260385][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.260385][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.260385][ T72] netlink_unicast+0x449/0x710 [ 2530.260385][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.260385][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.260385][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.260385][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.260385][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.260385][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.260385][ T72] [ 2530.261919][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2530.261919][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.261919][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.261919][ T72] ipv6_find_idev+0x102/0x170 [ 2530.261919][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.261919][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.261919][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.261919][ T72] netlink_unicast+0x449/0x710 [ 2530.261919][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.261919][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.261919][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.261919][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.261919][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.261919][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.261919][ T72] [ 2530.263601][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2530.264311][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2530.264311][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.264311][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.264311][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.264311][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.264311][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.264311][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.264311][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.264311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.264311][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.264311][ T72] netlink_unicast+0x449/0x710 [ 2530.264311][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.264311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.264311][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.264311][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.264311][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.264311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.264311][ T72] [ 2530.266302][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2530.266302][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.266302][ T72] ipv6_find_idev+0x102/0x170 [ 2530.266302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.266302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.266302][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.266302][ T72] netlink_unicast+0x449/0x710 [ 2530.266302][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.266302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.266302][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.266302][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.266302][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.266302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.266302][ T72] [ 2530.267840][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2530.267840][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.267840][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.267840][ T72] ipv6_find_idev+0x102/0x170 [ 2530.267840][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.267840][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.267840][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.267840][ T72] netlink_unicast+0x449/0x710 [ 2530.267840][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.267840][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.267840][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.267840][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.267840][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.267840][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.267840][ T72] [ 2530.269564][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2530.269877][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2530.269877][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.269877][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.269877][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.269877][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.269877][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.269877][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.269877][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.269877][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.269877][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.269877][ T72] netlink_unicast+0x449/0x710 [ 2530.269877][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.269877][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.269877][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.269877][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.269877][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.269877][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.269877][ T72] [ 2530.271867][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2530.271867][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.271867][ T72] ipv6_find_idev+0x102/0x170 [ 2530.271867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.271867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.271867][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.271867][ T72] netlink_unicast+0x449/0x710 [ 2530.271867][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.271867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.271867][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.271867][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.271867][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.271867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.271867][ T72] [ 2530.273407][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2530.273407][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.273407][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.273407][ T72] ipv6_find_idev+0x102/0x170 [ 2530.273407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.273407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.273407][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.273407][ T72] netlink_unicast+0x449/0x710 [ 2530.273407][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.273407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.273407][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.273407][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.273407][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.273407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.273407][ T72] [ 2530.275134][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2530.275444][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2530.275444][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.275444][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.275444][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.275444][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.275444][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.275444][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.275444][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.275444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.275444][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.275444][ T72] netlink_unicast+0x449/0x710 [ 2530.275444][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.275444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.275444][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.275444][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.275444][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.275444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.275444][ T72] [ 2530.277496][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2530.277496][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.277496][ T72] ipv6_find_idev+0x102/0x170 [ 2530.277496][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.277496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.277496][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.277496][ T72] netlink_unicast+0x449/0x710 [ 2530.277496][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.277496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.277496][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.277496][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.277496][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.277496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.277496][ T72] [ 2530.279212][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2530.279212][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.279212][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.279212][ T72] ipv6_find_idev+0x102/0x170 [ 2530.279212][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.279212][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.279212][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.279212][ T72] netlink_unicast+0x449/0x710 [ 2530.279212][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.279212][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.279212][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.279212][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.279212][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.279212][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.279212][ T72] [ 2530.281116][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2530.281426][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2530.281426][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.281426][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.281426][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.281426][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.281426][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.281426][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.281426][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.281426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.281426][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.281426][ T72] netlink_unicast+0x449/0x710 [ 2530.281426][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.281426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.281426][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.281426][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.281426][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.281426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.281426][ T72] [ 2530.283629][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2530.283629][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.283629][ T72] ipv6_find_idev+0x102/0x170 [ 2530.283629][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.283629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.283629][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.283629][ T72] netlink_unicast+0x449/0x710 [ 2530.283629][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.283629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.283629][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.283629][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.283629][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.283629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.283629][ T72] [ 2530.285346][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2530.285346][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.285346][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.285346][ T72] ipv6_find_idev+0x102/0x170 [ 2530.285346][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.285346][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.285346][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.285346][ T72] netlink_unicast+0x449/0x710 [ 2530.285346][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.285346][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.285346][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.285346][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.285346][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.285346][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.285346][ T72] [ 2530.287315][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2530.287629][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2530.287629][ T72] netdev_get_by_index+0x5e/0x80 [ 2530.287629][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2530.287629][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2530.287629][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2530.287629][ T72] ipv6_add_addr+0x411/0x2000 [ 2530.287629][ T72] inet6_addr_add+0x30e/0xa40 [ 2530.287629][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2530.287629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.287629][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.287629][ T72] netlink_unicast+0x449/0x710 [ 2530.287629][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.287629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.287629][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.287629][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.287629][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.287629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.287629][ T72] [ 2530.289812][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2530.289812][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2530.289812][ T72] ipv6_find_idev+0x102/0x170 [ 2530.289812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.289812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.289812][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.289812][ T72] netlink_unicast+0x449/0x710 [ 2530.289812][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.289812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.289812][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.289812][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.289812][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.289812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.289812][ T72] [ 2530.291521][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2530.291521][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2530.291521][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2530.291521][ T72] ipv6_find_idev+0x102/0x170 [ 2530.291521][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2530.291521][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2530.291521][ T72] netlink_rcv_skb+0x130/0x360 [ 2530.291521][ T72] netlink_unicast+0x449/0x710 [ 2530.291521][ T72] netlink_sendmsg+0x723/0xbe0 [ 2530.291521][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2530.291521][ T72] ___sys_sendmsg+0xee/0x170 [ 2530.291521][ T72] __sys_sendmsg+0xcd/0x170 [ 2530.291521][ T72] do_syscall_64+0xc6/0x1e0 [ 2530.291521][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2530.291521][ T72] [ 2540.534895][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2540.535319][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2540.535319][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.535319][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.535319][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.535319][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.535319][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.535319][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.535319][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.535319][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.535319][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.535319][ T72] netlink_unicast+0x449/0x710 [ 2540.535319][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.535319][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.535319][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.535319][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.535319][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.535319][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.535319][ T72] [ 2540.537344][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2540.537344][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.537344][ T72] ipv6_find_idev+0x102/0x170 [ 2540.537344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.537344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.537344][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.537344][ T72] netlink_unicast+0x449/0x710 [ 2540.537344][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.537344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.537344][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.537344][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.537344][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.537344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.537344][ T72] [ 2540.538918][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2540.538918][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.538918][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.538918][ T72] ipv6_find_idev+0x102/0x170 [ 2540.538918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.538918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.538918][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.538918][ T72] netlink_unicast+0x449/0x710 [ 2540.538918][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.538918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.538918][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.538918][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.538918][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.538918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.538918][ T72] [ 2540.540639][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2540.540937][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2540.540937][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.540937][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.540937][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.540937][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.540937][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.540937][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.540937][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.540937][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.540937][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.540937][ T72] netlink_unicast+0x449/0x710 [ 2540.540937][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.540937][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.540937][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.540937][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.540937][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.540937][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.540937][ T72] [ 2540.542921][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2540.542921][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.542921][ T72] ipv6_find_idev+0x102/0x170 [ 2540.542921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.542921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.542921][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.542921][ T72] netlink_unicast+0x449/0x710 [ 2540.542921][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.542921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.542921][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.542921][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.542921][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.542921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.542921][ T72] [ 2540.544479][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2540.544479][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.544479][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.544479][ T72] ipv6_find_idev+0x102/0x170 [ 2540.544479][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.544479][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.544479][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.544479][ T72] netlink_unicast+0x449/0x710 [ 2540.544479][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.544479][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.544479][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.544479][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.544479][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.544479][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.544479][ T72] [ 2540.546162][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2540.546443][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2540.546443][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.546443][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.546443][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.546443][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.546443][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.546443][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.546443][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.546443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.546443][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.546443][ T72] netlink_unicast+0x449/0x710 [ 2540.546443][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.546443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.546443][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.546443][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.546443][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.546443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.546443][ T72] [ 2540.548443][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2540.548443][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.548443][ T72] ipv6_find_idev+0x102/0x170 [ 2540.548443][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.548443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.548443][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.548443][ T72] netlink_unicast+0x449/0x710 [ 2540.548443][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.548443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.548443][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.548443][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.548443][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.548443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.548443][ T72] [ 2540.549997][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2540.549997][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.549997][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.549997][ T72] ipv6_find_idev+0x102/0x170 [ 2540.549997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.549997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.549997][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.549997][ T72] netlink_unicast+0x449/0x710 [ 2540.549997][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.549997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.549997][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.549997][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.549997][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.549997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.549997][ T72] [ 2540.551684][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2540.552388][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2540.552388][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.552388][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.552388][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.552388][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.552388][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.552388][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.552388][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.552388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.552388][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.552388][ T72] netlink_unicast+0x449/0x710 [ 2540.552388][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.552388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.552388][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.552388][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.552388][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.552388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.552388][ T72] [ 2540.554390][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2540.554390][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.554390][ T72] ipv6_find_idev+0x102/0x170 [ 2540.554390][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.554390][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.554390][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.554390][ T72] netlink_unicast+0x449/0x710 [ 2540.554390][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.554390][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.554390][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.554390][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.554390][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.554390][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.554390][ T72] [ 2540.555921][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2540.555921][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.555921][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.555921][ T72] ipv6_find_idev+0x102/0x170 [ 2540.555921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.555921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.555921][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.555921][ T72] netlink_unicast+0x449/0x710 [ 2540.555921][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.555921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.555921][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.555921][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.555921][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.555921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.555921][ T72] [ 2540.557638][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2540.557955][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2540.557955][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.557955][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.557955][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.557955][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.557955][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.557955][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.557955][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.557955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.557955][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.557955][ T72] netlink_unicast+0x449/0x710 [ 2540.557955][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.557955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.557955][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.557955][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.557955][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.557955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.557955][ T72] [ 2540.559948][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2540.559948][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.559948][ T72] ipv6_find_idev+0x102/0x170 [ 2540.559948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.559948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.559948][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.559948][ T72] netlink_unicast+0x449/0x710 [ 2540.559948][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.559948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.559948][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.559948][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.559948][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.559948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.559948][ T72] [ 2540.561486][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2540.561486][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.561486][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.561486][ T72] ipv6_find_idev+0x102/0x170 [ 2540.561486][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.561486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.561486][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.561486][ T72] netlink_unicast+0x449/0x710 [ 2540.561486][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.561486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.561486][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.561486][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.561486][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.561486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.561486][ T72] [ 2540.563237][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2540.563554][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2540.563554][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.563554][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.563554][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.563554][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.563554][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.563554][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.563554][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.563554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.563554][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.563554][ T72] netlink_unicast+0x449/0x710 [ 2540.563554][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.563554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.563554][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.563554][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.563554][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.563554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.563554][ T72] [ 2540.565563][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2540.565563][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.565563][ T72] ipv6_find_idev+0x102/0x170 [ 2540.565563][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.565563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.565563][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.565563][ T72] netlink_unicast+0x449/0x710 [ 2540.565563][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.565563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.565563][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.565563][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.565563][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.565563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.565563][ T72] [ 2540.567336][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2540.567336][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.567336][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.567336][ T72] ipv6_find_idev+0x102/0x170 [ 2540.567336][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.567336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.567336][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.567336][ T72] netlink_unicast+0x449/0x710 [ 2540.567336][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.567336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.567336][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.567336][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.567336][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.567336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.567336][ T72] [ 2540.569236][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2540.569545][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2540.569545][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.569545][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.569545][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.569545][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.569545][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.569545][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.569545][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.569545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.569545][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.569545][ T72] netlink_unicast+0x449/0x710 [ 2540.569545][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.569545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.569545][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.569545][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.569545][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.569545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.569545][ T72] [ 2540.571701][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2540.571701][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.571701][ T72] ipv6_find_idev+0x102/0x170 [ 2540.571701][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.571701][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.571701][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.571701][ T72] netlink_unicast+0x449/0x710 [ 2540.571701][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.571701][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.571701][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.571701][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.571701][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.571701][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.571701][ T72] [ 2540.573406][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2540.573406][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.573406][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.573406][ T72] ipv6_find_idev+0x102/0x170 [ 2540.573406][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.573406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.573406][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.573406][ T72] netlink_unicast+0x449/0x710 [ 2540.573406][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.573406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.573406][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.573406][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.573406][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.573406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.573406][ T72] [ 2540.575292][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2540.575618][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2540.575618][ T72] netdev_get_by_index+0x5e/0x80 [ 2540.575618][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2540.575618][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2540.575618][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2540.575618][ T72] ipv6_add_addr+0x411/0x2000 [ 2540.575618][ T72] inet6_addr_add+0x30e/0xa40 [ 2540.575618][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2540.575618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.575618][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.575618][ T72] netlink_unicast+0x449/0x710 [ 2540.575618][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.575618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.575618][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.575618][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.575618][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.575618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.575618][ T72] [ 2540.577836][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2540.577836][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2540.577836][ T72] ipv6_find_idev+0x102/0x170 [ 2540.577836][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.577836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.577836][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.577836][ T72] netlink_unicast+0x449/0x710 [ 2540.577836][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.577836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.577836][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.577836][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.577836][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.577836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.577836][ T72] [ 2540.579560][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2540.579560][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2540.579560][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2540.579560][ T72] ipv6_find_idev+0x102/0x170 [ 2540.579560][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2540.579560][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2540.579560][ T72] netlink_rcv_skb+0x130/0x360 [ 2540.579560][ T72] netlink_unicast+0x449/0x710 [ 2540.579560][ T72] netlink_sendmsg+0x723/0xbe0 [ 2540.579560][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2540.579560][ T72] ___sys_sendmsg+0xee/0x170 [ 2540.579560][ T72] __sys_sendmsg+0xcd/0x170 [ 2540.579560][ T72] do_syscall_64+0xc6/0x1e0 [ 2540.579560][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2540.579560][ T72] [ 2550.822860][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2550.823343][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2550.823343][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.823343][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.823343][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.823343][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.823343][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.823343][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.823343][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.823343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.823343][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.823343][ T72] netlink_unicast+0x449/0x710 [ 2550.823343][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.823343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.823343][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.823343][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.823343][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.823343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.823343][ T72] [ 2550.825366][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2550.825366][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.825366][ T72] ipv6_find_idev+0x102/0x170 [ 2550.825366][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.825366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.825366][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.825366][ T72] netlink_unicast+0x449/0x710 [ 2550.825366][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.825366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.825366][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.825366][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.825366][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.825366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.825366][ T72] [ 2550.826905][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2550.826905][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.826905][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.826905][ T72] ipv6_find_idev+0x102/0x170 [ 2550.826905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.826905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.826905][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.826905][ T72] netlink_unicast+0x449/0x710 [ 2550.826905][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.826905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.826905][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.826905][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.826905][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.826905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.826905][ T72] [ 2550.828611][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2550.828895][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2550.828895][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.828895][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.828895][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.828895][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.828895][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.828895][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.828895][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.828895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.828895][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.828895][ T72] netlink_unicast+0x449/0x710 [ 2550.828895][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.828895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.828895][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.828895][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.828895][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.828895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.828895][ T72] [ 2550.830941][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2550.830941][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.830941][ T72] ipv6_find_idev+0x102/0x170 [ 2550.830941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.830941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.830941][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.830941][ T72] netlink_unicast+0x449/0x710 [ 2550.830941][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.830941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.830941][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.830941][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.830941][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.830941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.830941][ T72] [ 2550.833029][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2550.833029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.833029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.833029][ T72] ipv6_find_idev+0x102/0x170 [ 2550.833029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.833029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.833029][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.833029][ T72] netlink_unicast+0x449/0x710 [ 2550.833029][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.833029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.833029][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.833029][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.833029][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.833029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.833029][ T72] [ 2550.834730][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2550.835008][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2550.835008][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.835008][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.835008][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.835008][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.835008][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.835008][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.835008][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.835008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.835008][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.835008][ T72] netlink_unicast+0x449/0x710 [ 2550.835008][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.835008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.835008][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.835008][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.835008][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.835008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.835008][ T72] [ 2550.837038][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2550.837038][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.837038][ T72] ipv6_find_idev+0x102/0x170 [ 2550.837038][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.837038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.837038][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.837038][ T72] netlink_unicast+0x449/0x710 [ 2550.837038][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.837038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.837038][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.837038][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.837038][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.837038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.837038][ T72] [ 2550.838579][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2550.838579][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.838579][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.838579][ T72] ipv6_find_idev+0x102/0x170 [ 2550.838579][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.838579][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.838579][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.838579][ T72] netlink_unicast+0x449/0x710 [ 2550.838579][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.838579][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.838579][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.838579][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.838579][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.838579][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.838579][ T72] [ 2550.840283][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2550.840548][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2550.840548][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.840548][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.840548][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.840548][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.840548][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.840548][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.840548][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.840548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.840548][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.840548][ T72] netlink_unicast+0x449/0x710 [ 2550.840548][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.840548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.840548][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.840548][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.840548][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.840548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.840548][ T72] [ 2550.842941][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2550.842941][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.842941][ T72] ipv6_find_idev+0x102/0x170 [ 2550.842941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.842941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.842941][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.842941][ T72] netlink_unicast+0x449/0x710 [ 2550.842941][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.842941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.842941][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.842941][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.842941][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.842941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.842941][ T72] [ 2550.844487][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2550.844487][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.844487][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.844487][ T72] ipv6_find_idev+0x102/0x170 [ 2550.844487][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.844487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.844487][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.844487][ T72] netlink_unicast+0x449/0x710 [ 2550.844487][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.844487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.844487][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.844487][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.844487][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.844487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.844487][ T72] [ 2550.846578][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2550.847184][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2550.847184][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.847184][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.847184][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.847184][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.847184][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.847184][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.847184][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.847184][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.847184][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.847184][ T72] netlink_unicast+0x449/0x710 [ 2550.847184][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.847184][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.847184][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.847184][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.847184][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.847184][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.847184][ T72] [ 2550.849189][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2550.849189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.849189][ T72] ipv6_find_idev+0x102/0x170 [ 2550.849189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.849189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.849189][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.849189][ T72] netlink_unicast+0x449/0x710 [ 2550.849189][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.849189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.849189][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.849189][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.849189][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.849189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.849189][ T72] [ 2550.850723][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2550.850723][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.850723][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.850723][ T72] ipv6_find_idev+0x102/0x170 [ 2550.850723][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.850723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.850723][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.850723][ T72] netlink_unicast+0x449/0x710 [ 2550.850723][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.850723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.850723][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.850723][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.850723][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.850723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.850723][ T72] [ 2550.852426][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2550.852696][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2550.852696][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.852696][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.852696][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.852696][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.852696][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.852696][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.852696][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.852696][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.852696][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.852696][ T72] netlink_unicast+0x449/0x710 [ 2550.852696][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.852696][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.852696][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.852696][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.852696][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.852696][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.852696][ T72] [ 2550.854695][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2550.854695][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.854695][ T72] ipv6_find_idev+0x102/0x170 [ 2550.854695][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.854695][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.854695][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.854695][ T72] netlink_unicast+0x449/0x710 [ 2550.854695][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.854695][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.854695][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.854695][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.854695][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.854695][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.854695][ T72] [ 2550.856226][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2550.856226][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.856226][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.856226][ T72] ipv6_find_idev+0x102/0x170 [ 2550.856226][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.856226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.856226][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.856226][ T72] netlink_unicast+0x449/0x710 [ 2550.856226][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.856226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.856226][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.856226][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.856226][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.856226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.856226][ T72] [ 2550.858269][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2550.858590][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2550.858590][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.858590][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.858590][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.858590][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.858590][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.858590][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.858590][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.858590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.858590][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.858590][ T72] netlink_unicast+0x449/0x710 [ 2550.858590][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.858590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.858590][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.858590][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.858590][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.858590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.858590][ T72] [ 2550.860765][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2550.860765][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.860765][ T72] ipv6_find_idev+0x102/0x170 [ 2550.860765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.860765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.860765][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.860765][ T72] netlink_unicast+0x449/0x710 [ 2550.860765][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.860765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.860765][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.860765][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.860765][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.860765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.860765][ T72] [ 2550.862485][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2550.862485][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.862485][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.862485][ T72] ipv6_find_idev+0x102/0x170 [ 2550.862485][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.862485][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.862485][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.862485][ T72] netlink_unicast+0x449/0x710 [ 2550.862485][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.862485][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.862485][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.862485][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.862485][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.862485][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.862485][ T72] [ 2550.864390][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2550.864712][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2550.864712][ T72] netdev_get_by_index+0x5e/0x80 [ 2550.864712][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2550.864712][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2550.864712][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2550.864712][ T72] ipv6_add_addr+0x411/0x2000 [ 2550.864712][ T72] inet6_addr_add+0x30e/0xa40 [ 2550.864712][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2550.864712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.864712][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.864712][ T72] netlink_unicast+0x449/0x710 [ 2550.864712][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.864712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.864712][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.864712][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.864712][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.864712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.864712][ T72] [ 2550.866889][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2550.866889][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2550.866889][ T72] ipv6_find_idev+0x102/0x170 [ 2550.866889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.866889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.866889][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.866889][ T72] netlink_unicast+0x449/0x710 [ 2550.866889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.866889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.866889][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.866889][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.866889][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.866889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.866889][ T72] [ 2550.868614][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2550.868614][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2550.868614][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2550.868614][ T72] ipv6_find_idev+0x102/0x170 [ 2550.868614][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2550.868614][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2550.868614][ T72] netlink_rcv_skb+0x130/0x360 [ 2550.868614][ T72] netlink_unicast+0x449/0x710 [ 2550.868614][ T72] netlink_sendmsg+0x723/0xbe0 [ 2550.868614][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2550.868614][ T72] ___sys_sendmsg+0xee/0x170 [ 2550.868614][ T72] __sys_sendmsg+0xcd/0x170 [ 2550.868614][ T72] do_syscall_64+0xc6/0x1e0 [ 2550.868614][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2550.868614][ T72] [ 2561.110830][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2561.111260][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2561.111260][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.111260][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.111260][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.111260][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.111260][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.111260][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.111260][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.111260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.111260][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.111260][ T72] netlink_unicast+0x449/0x710 [ 2561.111260][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.111260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.111260][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.111260][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.111260][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.111260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.111260][ T72] [ 2561.113284][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2561.113284][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.113284][ T72] ipv6_find_idev+0x102/0x170 [ 2561.113284][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.113284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.113284][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.113284][ T72] netlink_unicast+0x449/0x710 [ 2561.113284][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.113284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.113284][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.113284][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.113284][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.113284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.113284][ T72] [ 2561.114837][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2561.114837][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.114837][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.114837][ T72] ipv6_find_idev+0x102/0x170 [ 2561.114837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.114837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.114837][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.114837][ T72] netlink_unicast+0x449/0x710 [ 2561.114837][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.114837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.114837][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.114837][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.114837][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.114837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.114837][ T72] [ 2561.116544][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2561.116831][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2561.116831][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.116831][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.116831][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.116831][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.116831][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.116831][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.116831][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.116831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.116831][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.116831][ T72] netlink_unicast+0x449/0x710 [ 2561.116831][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.116831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.116831][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.116831][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.116831][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.116831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.116831][ T72] [ 2561.118840][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2561.118840][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.118840][ T72] ipv6_find_idev+0x102/0x170 [ 2561.118840][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.118840][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.118840][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.118840][ T72] netlink_unicast+0x449/0x710 [ 2561.118840][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.118840][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.118840][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.118840][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.118840][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.118840][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.118840][ T72] [ 2561.120404][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2561.120404][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.120404][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.120404][ T72] ipv6_find_idev+0x102/0x170 [ 2561.120404][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.120404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.120404][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.120404][ T72] netlink_unicast+0x449/0x710 [ 2561.120404][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.120404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.120404][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.120404][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.120404][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.120404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.120404][ T72] [ 2561.122102][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2561.122373][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2561.122373][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.122373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.122373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.122373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.122373][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.122373][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.122373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.122373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.122373][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.122373][ T72] netlink_unicast+0x449/0x710 [ 2561.122373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.122373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.122373][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.122373][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.122373][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.122373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.122373][ T72] [ 2561.124373][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2561.124373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.124373][ T72] ipv6_find_idev+0x102/0x170 [ 2561.124373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.124373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.124373][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.124373][ T72] netlink_unicast+0x449/0x710 [ 2561.124373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.124373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.124373][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.124373][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.124373][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.124373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.124373][ T72] [ 2561.125914][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2561.125914][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.125914][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.125914][ T72] ipv6_find_idev+0x102/0x170 [ 2561.125914][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.125914][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.125914][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.125914][ T72] netlink_unicast+0x449/0x710 [ 2561.125914][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.125914][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.125914][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.125914][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.125914][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.125914][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.125914][ T72] [ 2561.127608][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2561.127942][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2561.127942][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.127942][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.127942][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.127942][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.127942][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.127942][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.127942][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.127942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.127942][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.127942][ T72] netlink_unicast+0x449/0x710 [ 2561.127942][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.127942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.127942][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.127942][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.127942][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.127942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.127942][ T72] [ 2561.129950][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2561.129950][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.129950][ T72] ipv6_find_idev+0x102/0x170 [ 2561.129950][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.129950][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.129950][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.129950][ T72] netlink_unicast+0x449/0x710 [ 2561.129950][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.129950][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.129950][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.129950][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.129950][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.129950][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.129950][ T72] [ 2561.131497][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2561.131497][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.131497][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.131497][ T72] ipv6_find_idev+0x102/0x170 [ 2561.131497][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.131497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.131497][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.131497][ T72] netlink_unicast+0x449/0x710 [ 2561.131497][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.131497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.131497][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.131497][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.131497][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.131497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.131497][ T72] [ 2561.133234][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2561.133554][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2561.133554][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.133554][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.133554][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.133554][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.133554][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.133554][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.133554][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.133554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.133554][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.133554][ T72] netlink_unicast+0x449/0x710 [ 2561.133554][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.133554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.133554][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.133554][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.133554][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.133554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.133554][ T72] [ 2561.135585][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2561.135585][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.135585][ T72] ipv6_find_idev+0x102/0x170 [ 2561.135585][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.135585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.135585][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.135585][ T72] netlink_unicast+0x449/0x710 [ 2561.135585][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.135585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.135585][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.135585][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.135585][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.135585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.135585][ T72] [ 2561.137140][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2561.137140][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.137140][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.137140][ T72] ipv6_find_idev+0x102/0x170 [ 2561.137140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.137140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.137140][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.137140][ T72] netlink_unicast+0x449/0x710 [ 2561.137140][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.137140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.137140][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.137140][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.137140][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.137140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.137140][ T72] [ 2561.139075][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2561.139386][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2561.139386][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.139386][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.139386][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.139386][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.139386][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.139386][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.139386][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.139386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.139386][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.139386][ T72] netlink_unicast+0x449/0x710 [ 2561.139386][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.139386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.139386][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.139386][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.139386][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.139386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.139386][ T72] [ 2561.141566][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2561.141566][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.141566][ T72] ipv6_find_idev+0x102/0x170 [ 2561.141566][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.141566][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.141566][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.141566][ T72] netlink_unicast+0x449/0x710 [ 2561.141566][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.141566][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.141566][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.141566][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.141566][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.141566][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.141566][ T72] [ 2561.143342][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2561.143342][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.143342][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.143342][ T72] ipv6_find_idev+0x102/0x170 [ 2561.143342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.143342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.143342][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.143342][ T72] netlink_unicast+0x449/0x710 [ 2561.143342][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.143342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.143342][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.143342][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.143342][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.143342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.143342][ T72] [ 2561.145243][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2561.145558][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2561.145558][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.145558][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.145558][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.145558][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.145558][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.145558][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.145558][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.145558][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.145558][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.145558][ T72] netlink_unicast+0x449/0x710 [ 2561.145558][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.145558][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.145558][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.145558][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.145558][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.145558][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.145558][ T72] [ 2561.147741][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2561.147741][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.147741][ T72] ipv6_find_idev+0x102/0x170 [ 2561.147741][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.147741][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.147741][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.147741][ T72] netlink_unicast+0x449/0x710 [ 2561.147741][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.147741][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.147741][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.147741][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.147741][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.147741][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.147741][ T72] [ 2561.149469][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2561.149469][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.149469][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.149469][ T72] ipv6_find_idev+0x102/0x170 [ 2561.149469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.149469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.149469][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.149469][ T72] netlink_unicast+0x449/0x710 [ 2561.149469][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.149469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.149469][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.149469][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.149469][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.149469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.149469][ T72] [ 2561.151422][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2561.151771][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2561.151771][ T72] netdev_get_by_index+0x5e/0x80 [ 2561.151771][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2561.151771][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2561.151771][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2561.151771][ T72] ipv6_add_addr+0x411/0x2000 [ 2561.151771][ T72] inet6_addr_add+0x30e/0xa40 [ 2561.151771][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2561.151771][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.151771][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.151771][ T72] netlink_unicast+0x449/0x710 [ 2561.151771][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.151771][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.151771][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.151771][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.151771][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.151771][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.151771][ T72] [ 2561.154018][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2561.154018][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2561.154018][ T72] ipv6_find_idev+0x102/0x170 [ 2561.154018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.154018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.154018][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.154018][ T72] netlink_unicast+0x449/0x710 [ 2561.154018][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.154018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.154018][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.154018][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.154018][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.154018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.154018][ T72] [ 2561.155756][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2561.155756][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2561.155756][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2561.155756][ T72] ipv6_find_idev+0x102/0x170 [ 2561.155756][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2561.155756][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2561.155756][ T72] netlink_rcv_skb+0x130/0x360 [ 2561.155756][ T72] netlink_unicast+0x449/0x710 [ 2561.155756][ T72] netlink_sendmsg+0x723/0xbe0 [ 2561.155756][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2561.155756][ T72] ___sys_sendmsg+0xee/0x170 [ 2561.155756][ T72] __sys_sendmsg+0xcd/0x170 [ 2561.155756][ T72] do_syscall_64+0xc6/0x1e0 [ 2561.155756][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2561.155756][ T72] [ 2571.398875][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2571.399291][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2571.399291][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.399291][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.399291][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.399291][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.399291][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.399291][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.399291][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.399291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.399291][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.399291][ T72] netlink_unicast+0x449/0x710 [ 2571.399291][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.399291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.399291][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.399291][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.399291][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.399291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.399291][ T72] [ 2571.401275][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2571.401275][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.401275][ T72] ipv6_find_idev+0x102/0x170 [ 2571.401275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.401275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.401275][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.401275][ T72] netlink_unicast+0x449/0x710 [ 2571.401275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.401275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.401275][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.401275][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.401275][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.401275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.401275][ T72] [ 2571.402800][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2571.402800][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.402800][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.402800][ T72] ipv6_find_idev+0x102/0x170 [ 2571.402800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.402800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.402800][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.402800][ T72] netlink_unicast+0x449/0x710 [ 2571.402800][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.402800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.402800][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.402800][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.402800][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.402800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.402800][ T72] [ 2571.404479][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2571.404759][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2571.404759][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.404759][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.404759][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.404759][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.404759][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.404759][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.404759][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.404759][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.404759][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.404759][ T72] netlink_unicast+0x449/0x710 [ 2571.404759][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.404759][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.404759][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.404759][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.404759][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.404759][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.404759][ T72] [ 2571.406727][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2571.406727][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.406727][ T72] ipv6_find_idev+0x102/0x170 [ 2571.406727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.406727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.406727][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.406727][ T72] netlink_unicast+0x449/0x710 [ 2571.406727][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.406727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.406727][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.406727][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.406727][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.406727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.406727][ T72] [ 2571.408242][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2571.408242][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.408242][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.408242][ T72] ipv6_find_idev+0x102/0x170 [ 2571.408242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.408242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.408242][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.408242][ T72] netlink_unicast+0x449/0x710 [ 2571.408242][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.408242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.408242][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.408242][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.408242][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.408242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.408242][ T72] [ 2571.409933][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2571.410193][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2571.410193][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.410193][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.410193][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.410193][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.410193][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.410193][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.410193][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.410193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.410193][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.410193][ T72] netlink_unicast+0x449/0x710 [ 2571.410193][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.410193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.410193][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.410193][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.410193][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.410193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.410193][ T72] [ 2571.412163][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2571.412163][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.412163][ T72] ipv6_find_idev+0x102/0x170 [ 2571.412163][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.412163][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.412163][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.412163][ T72] netlink_unicast+0x449/0x710 [ 2571.412163][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.412163][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.412163][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.412163][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.412163][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.412163][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.412163][ T72] [ 2571.413687][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2571.413687][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.413687][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.413687][ T72] ipv6_find_idev+0x102/0x170 [ 2571.413687][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.413687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.413687][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.413687][ T72] netlink_unicast+0x449/0x710 [ 2571.413687][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.413687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.413687][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.413687][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.413687][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.413687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.413687][ T72] [ 2571.415342][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2571.415603][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2571.415603][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.415603][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.415603][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.415603][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.415603][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.415603][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.415603][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.415603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.415603][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.415603][ T72] netlink_unicast+0x449/0x710 [ 2571.415603][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.415603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.415603][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.415603][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.415603][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.415603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.415603][ T72] [ 2571.417573][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2571.417573][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.417573][ T72] ipv6_find_idev+0x102/0x170 [ 2571.417573][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.417573][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.417573][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.417573][ T72] netlink_unicast+0x449/0x710 [ 2571.417573][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.417573][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.417573][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.417573][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.417573][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.417573][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.417573][ T72] [ 2571.419095][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2571.419095][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.419095][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.419095][ T72] ipv6_find_idev+0x102/0x170 [ 2571.419095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.419095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.419095][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.419095][ T72] netlink_unicast+0x449/0x710 [ 2571.419095][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.419095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.419095][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.419095][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.419095][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.419095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.419095][ T72] [ 2571.420784][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2571.421049][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2571.421049][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.421049][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.421049][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.421049][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.421049][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.421049][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.421049][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.421049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.421049][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.421049][ T72] netlink_unicast+0x449/0x710 [ 2571.421049][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.421049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.421049][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.421049][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.421049][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.421049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.421049][ T72] [ 2571.423016][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2571.423016][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.423016][ T72] ipv6_find_idev+0x102/0x170 [ 2571.423016][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.423016][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.423016][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.423016][ T72] netlink_unicast+0x449/0x710 [ 2571.423016][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.423016][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.423016][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.423016][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.423016][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.423016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.423016][ T72] [ 2571.424596][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2571.424596][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.424596][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.424596][ T72] ipv6_find_idev+0x102/0x170 [ 2571.424596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.424596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.424596][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.424596][ T72] netlink_unicast+0x449/0x710 [ 2571.424596][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.424596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.424596][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.424596][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.424596][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.424596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.424596][ T72] [ 2571.426542][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2571.426858][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2571.426858][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.426858][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.426858][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.426858][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.426858][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.426858][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.426858][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.426858][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.426858][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.426858][ T72] netlink_unicast+0x449/0x710 [ 2571.426858][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.426858][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.426858][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.426858][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.426858][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.426858][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.426858][ T72] [ 2571.429004][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2571.429004][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.429004][ T72] ipv6_find_idev+0x102/0x170 [ 2571.429004][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.429004][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.429004][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.429004][ T72] netlink_unicast+0x449/0x710 [ 2571.429004][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.429004][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.429004][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.429004][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.429004][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.429004][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.429004][ T72] [ 2571.430702][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2571.430702][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.430702][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.430702][ T72] ipv6_find_idev+0x102/0x170 [ 2571.430702][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.430702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.430702][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.430702][ T72] netlink_unicast+0x449/0x710 [ 2571.430702][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.430702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.430702][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.430702][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.430702][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.430702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.430702][ T72] [ 2571.432643][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2571.432955][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2571.432955][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.432955][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.432955][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.432955][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.432955][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.432955][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.432955][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.432955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.432955][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.432955][ T72] netlink_unicast+0x449/0x710 [ 2571.432955][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.432955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.432955][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.432955][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.432955][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.432955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.432955][ T72] [ 2571.435108][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2571.435108][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.435108][ T72] ipv6_find_idev+0x102/0x170 [ 2571.435108][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.435108][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.435108][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.435108][ T72] netlink_unicast+0x449/0x710 [ 2571.435108][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.435108][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.435108][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.435108][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.435108][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.435108][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.435108][ T72] [ 2571.436806][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2571.436806][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.436806][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.436806][ T72] ipv6_find_idev+0x102/0x170 [ 2571.436806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.436806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.436806][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.436806][ T72] netlink_unicast+0x449/0x710 [ 2571.436806][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.436806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.436806][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.436806][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.436806][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.436806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.436806][ T72] [ 2571.438677][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2571.438994][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2571.438994][ T72] netdev_get_by_index+0x5e/0x80 [ 2571.438994][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2571.438994][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2571.438994][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2571.438994][ T72] ipv6_add_addr+0x411/0x2000 [ 2571.438994][ T72] inet6_addr_add+0x30e/0xa40 [ 2571.438994][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2571.438994][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.438994][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.438994][ T72] netlink_unicast+0x449/0x710 [ 2571.438994][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.438994][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.438994][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.438994][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.438994][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.438994][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.438994][ T72] [ 2571.441197][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2571.441197][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2571.441197][ T72] ipv6_find_idev+0x102/0x170 [ 2571.441197][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.441197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.441197][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.441197][ T72] netlink_unicast+0x449/0x710 [ 2571.441197][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.441197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.441197][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.441197][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.441197][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.441197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.441197][ T72] [ 2571.442900][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2571.442900][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2571.442900][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2571.442900][ T72] ipv6_find_idev+0x102/0x170 [ 2571.442900][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2571.442900][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2571.442900][ T72] netlink_rcv_skb+0x130/0x360 [ 2571.442900][ T72] netlink_unicast+0x449/0x710 [ 2571.442900][ T72] netlink_sendmsg+0x723/0xbe0 [ 2571.442900][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2571.442900][ T72] ___sys_sendmsg+0xee/0x170 [ 2571.442900][ T72] __sys_sendmsg+0xcd/0x170 [ 2571.442900][ T72] do_syscall_64+0xc6/0x1e0 [ 2571.442900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2571.442900][ T72] [ 2581.662865][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2581.663291][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2581.663291][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.663291][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.663291][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.663291][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.663291][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.663291][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.663291][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.663291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.663291][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.663291][ T72] netlink_unicast+0x449/0x710 [ 2581.663291][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.663291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.663291][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.663291][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.663291][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.663291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.663291][ T72] [ 2581.665304][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2581.665304][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.665304][ T72] ipv6_find_idev+0x102/0x170 [ 2581.665304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.665304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.665304][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.665304][ T72] netlink_unicast+0x449/0x710 [ 2581.665304][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.665304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.665304][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.665304][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.665304][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.665304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.665304][ T72] [ 2581.666835][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2581.666835][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.666835][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.666835][ T72] ipv6_find_idev+0x102/0x170 [ 2581.666835][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.666835][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.666835][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.666835][ T72] netlink_unicast+0x449/0x710 [ 2581.666835][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.666835][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.666835][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.666835][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.666835][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.666835][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.666835][ T72] [ 2581.668519][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2581.668803][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2581.668803][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.668803][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.668803][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.668803][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.668803][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.668803][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.668803][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.668803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.668803][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.668803][ T72] netlink_unicast+0x449/0x710 [ 2581.668803][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.668803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.668803][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.668803][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.668803][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.668803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.668803][ T72] [ 2581.670772][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2581.670772][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.670772][ T72] ipv6_find_idev+0x102/0x170 [ 2581.670772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.670772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.670772][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.670772][ T72] netlink_unicast+0x449/0x710 [ 2581.670772][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.670772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.670772][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.670772][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.670772][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.670772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.670772][ T72] [ 2581.672290][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2581.672290][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.672290][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.672290][ T72] ipv6_find_idev+0x102/0x170 [ 2581.672290][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.672290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.672290][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.672290][ T72] netlink_unicast+0x449/0x710 [ 2581.672290][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.672290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.672290][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.672290][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.672290][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.672290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.672290][ T72] [ 2581.673974][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2581.674235][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2581.674235][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.674235][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.674235][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.674235][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.674235][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.674235][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.674235][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.674235][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.674235][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.674235][ T72] netlink_unicast+0x449/0x710 [ 2581.674235][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.674235][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.674235][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.674235][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.674235][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.674235][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.674235][ T72] [ 2581.676221][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2581.676221][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.676221][ T72] ipv6_find_idev+0x102/0x170 [ 2581.676221][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.676221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.676221][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.676221][ T72] netlink_unicast+0x449/0x710 [ 2581.676221][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.676221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.676221][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.676221][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.676221][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.676221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.676221][ T72] [ 2581.677744][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2581.677744][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.677744][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.677744][ T72] ipv6_find_idev+0x102/0x170 [ 2581.677744][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.677744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.677744][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.677744][ T72] netlink_unicast+0x449/0x710 [ 2581.677744][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.677744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.677744][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.677744][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.677744][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.677744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.677744][ T72] [ 2581.679430][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2581.679700][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2581.679700][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.679700][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.679700][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.679700][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.679700][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.679700][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.679700][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.679700][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.679700][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.679700][ T72] netlink_unicast+0x449/0x710 [ 2581.679700][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.679700][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.679700][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.679700][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.679700][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.679700][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.679700][ T72] [ 2581.681680][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2581.681680][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.681680][ T72] ipv6_find_idev+0x102/0x170 [ 2581.681680][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.681680][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.681680][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.681680][ T72] netlink_unicast+0x449/0x710 [ 2581.681680][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.681680][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.681680][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.681680][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.681680][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.681680][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.681680][ T72] [ 2581.683202][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2581.683202][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.683202][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.683202][ T72] ipv6_find_idev+0x102/0x170 [ 2581.683202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.683202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.683202][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.683202][ T72] netlink_unicast+0x449/0x710 [ 2581.683202][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.683202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.683202][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.683202][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.683202][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.683202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.683202][ T72] [ 2581.685273][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2581.685540][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2581.685540][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.685540][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.685540][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.685540][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.685540][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.685540][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.685540][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.685540][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.685540][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.685540][ T72] netlink_unicast+0x449/0x710 [ 2581.685540][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.685540][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.685540][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.685540][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.685540][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.685540][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.685540][ T72] [ 2581.687519][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2581.687519][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.687519][ T72] ipv6_find_idev+0x102/0x170 [ 2581.687519][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.687519][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.687519][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.687519][ T72] netlink_unicast+0x449/0x710 [ 2581.687519][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.687519][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.687519][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.687519][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.687519][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.687519][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.687519][ T72] [ 2581.689060][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2581.689060][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.689060][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.689060][ T72] ipv6_find_idev+0x102/0x170 [ 2581.689060][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.689060][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.689060][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.689060][ T72] netlink_unicast+0x449/0x710 [ 2581.689060][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.689060][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.689060][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.689060][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.689060][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.689060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.689060][ T72] [ 2581.690778][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2581.691042][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2581.691042][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.691042][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.691042][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.691042][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.691042][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.691042][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.691042][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.691042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.691042][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.691042][ T72] netlink_unicast+0x449/0x710 [ 2581.691042][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.691042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.691042][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.691042][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.691042][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.691042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.691042][ T72] [ 2581.693199][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2581.693199][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.693199][ T72] ipv6_find_idev+0x102/0x170 [ 2581.693199][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.693199][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.693199][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.693199][ T72] netlink_unicast+0x449/0x710 [ 2581.693199][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.693199][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.693199][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.693199][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.693199][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.693199][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.693199][ T72] [ 2581.694971][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2581.694971][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.694971][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.694971][ T72] ipv6_find_idev+0x102/0x170 [ 2581.694971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.694971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.694971][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.694971][ T72] netlink_unicast+0x449/0x710 [ 2581.694971][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.694971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.694971][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.694971][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.694971][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.694971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.694971][ T72] [ 2581.696858][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2581.697116][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2581.697116][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.697116][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.697116][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.697116][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.697116][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.697116][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.697116][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.697116][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.697116][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.697116][ T72] netlink_unicast+0x449/0x710 [ 2581.697116][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.697116][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.697116][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.697116][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.697116][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.697116][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.697116][ T72] [ 2581.699345][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2581.699345][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.699345][ T72] ipv6_find_idev+0x102/0x170 [ 2581.699345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.699345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.699345][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.699345][ T72] netlink_unicast+0x449/0x710 [ 2581.699345][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.699345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.699345][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.699345][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.699345][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.699345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.699345][ T72] [ 2581.701058][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2581.701058][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.701058][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.701058][ T72] ipv6_find_idev+0x102/0x170 [ 2581.701058][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.701058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.701058][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.701058][ T72] netlink_unicast+0x449/0x710 [ 2581.701058][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.701058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.701058][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.701058][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.701058][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.701058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.701058][ T72] [ 2581.702953][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2581.703217][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2581.703217][ T72] netdev_get_by_index+0x5e/0x80 [ 2581.703217][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2581.703217][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2581.703217][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2581.703217][ T72] ipv6_add_addr+0x411/0x2000 [ 2581.703217][ T72] inet6_addr_add+0x30e/0xa40 [ 2581.703217][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2581.703217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.703217][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.703217][ T72] netlink_unicast+0x449/0x710 [ 2581.703217][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.703217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.703217][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.703217][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.703217][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.703217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.703217][ T72] [ 2581.705462][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2581.705462][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2581.705462][ T72] ipv6_find_idev+0x102/0x170 [ 2581.705462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.705462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.705462][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.705462][ T72] netlink_unicast+0x449/0x710 [ 2581.705462][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.705462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.705462][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.705462][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.705462][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.705462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.705462][ T72] [ 2581.707172][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2581.707172][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2581.707172][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2581.707172][ T72] ipv6_find_idev+0x102/0x170 [ 2581.707172][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2581.707172][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2581.707172][ T72] netlink_rcv_skb+0x130/0x360 [ 2581.707172][ T72] netlink_unicast+0x449/0x710 [ 2581.707172][ T72] netlink_sendmsg+0x723/0xbe0 [ 2581.707172][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2581.707172][ T72] ___sys_sendmsg+0xee/0x170 [ 2581.707172][ T72] __sys_sendmsg+0xcd/0x170 [ 2581.707172][ T72] do_syscall_64+0xc6/0x1e0 [ 2581.707172][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2581.707172][ T72] [ 2591.950880][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2591.951305][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2591.951305][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.951305][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.951305][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.951305][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.951305][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.951305][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.951305][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.951305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.951305][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.951305][ T72] netlink_unicast+0x449/0x710 [ 2591.951305][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.951305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.951305][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.951305][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.951305][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.951305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.951305][ T72] [ 2591.953293][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2591.953293][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.953293][ T72] ipv6_find_idev+0x102/0x170 [ 2591.953293][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.953293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.953293][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.953293][ T72] netlink_unicast+0x449/0x710 [ 2591.953293][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.953293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.953293][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.953293][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.953293][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.953293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.953293][ T72] [ 2591.954959][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2591.954959][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.954959][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.954959][ T72] ipv6_find_idev+0x102/0x170 [ 2591.954959][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.954959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.954959][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.954959][ T72] netlink_unicast+0x449/0x710 [ 2591.954959][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.954959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.954959][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.954959][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.954959][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.954959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.954959][ T72] [ 2591.956644][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2591.956930][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2591.956930][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.956930][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.956930][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.956930][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.956930][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.956930][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.956930][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.956930][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.956930][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.956930][ T72] netlink_unicast+0x449/0x710 [ 2591.956930][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.956930][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.956930][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.956930][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.956930][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.956930][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.956930][ T72] [ 2591.958896][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2591.958896][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.958896][ T72] ipv6_find_idev+0x102/0x170 [ 2591.958896][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.958896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.958896][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.958896][ T72] netlink_unicast+0x449/0x710 [ 2591.958896][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.958896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.958896][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.958896][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.958896][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.958896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.958896][ T72] [ 2591.960418][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2591.960418][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.960418][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.960418][ T72] ipv6_find_idev+0x102/0x170 [ 2591.960418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.960418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.960418][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.960418][ T72] netlink_unicast+0x449/0x710 [ 2591.960418][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.960418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.960418][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.960418][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.960418][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.960418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.960418][ T72] [ 2591.962082][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2591.962340][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2591.962340][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.962340][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.962340][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.962340][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.962340][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.962340][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.962340][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.962340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.962340][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.962340][ T72] netlink_unicast+0x449/0x710 [ 2591.962340][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.962340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.962340][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.962340][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.962340][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.962340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.962340][ T72] [ 2591.964304][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2591.964304][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.964304][ T72] ipv6_find_idev+0x102/0x170 [ 2591.964304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.964304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.964304][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.964304][ T72] netlink_unicast+0x449/0x710 [ 2591.964304][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.964304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.964304][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.964304][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.964304][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.964304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.964304][ T72] [ 2591.965833][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2591.965833][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.965833][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.965833][ T72] ipv6_find_idev+0x102/0x170 [ 2591.965833][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.965833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.965833][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.965833][ T72] netlink_unicast+0x449/0x710 [ 2591.965833][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.965833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.965833][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.965833][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.965833][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.965833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.965833][ T72] [ 2591.967490][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2591.967753][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2591.967753][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.967753][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.967753][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.967753][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.967753][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.967753][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.967753][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.967753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.967753][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.967753][ T72] netlink_unicast+0x449/0x710 [ 2591.967753][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.967753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.967753][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.967753][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.967753][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.967753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.967753][ T72] [ 2591.969728][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2591.969728][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.969728][ T72] ipv6_find_idev+0x102/0x170 [ 2591.969728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.969728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.969728][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.969728][ T72] netlink_unicast+0x449/0x710 [ 2591.969728][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.969728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.969728][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.969728][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.969728][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.969728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.969728][ T72] [ 2591.971248][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2591.971248][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.971248][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.971248][ T72] ipv6_find_idev+0x102/0x170 [ 2591.971248][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.971248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.971248][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.971248][ T72] netlink_unicast+0x449/0x710 [ 2591.971248][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.971248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.971248][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.971248][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.971248][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.971248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.971248][ T72] [ 2591.973311][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2591.973582][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2591.973582][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.973582][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.973582][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.973582][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.973582][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.973582][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.973582][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.973582][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.973582][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.973582][ T72] netlink_unicast+0x449/0x710 [ 2591.973582][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.973582][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.973582][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.973582][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.973582][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.973582][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.973582][ T72] [ 2591.975584][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2591.975584][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.975584][ T72] ipv6_find_idev+0x102/0x170 [ 2591.975584][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.975584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.975584][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.975584][ T72] netlink_unicast+0x449/0x710 [ 2591.975584][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.975584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.975584][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.975584][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.975584][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.975584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.975584][ T72] [ 2591.977102][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2591.977102][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.977102][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.977102][ T72] ipv6_find_idev+0x102/0x170 [ 2591.977102][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.977102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.977102][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.977102][ T72] netlink_unicast+0x449/0x710 [ 2591.977102][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.977102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.977102][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.977102][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.977102][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.977102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.977102][ T72] [ 2591.978826][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2591.979118][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2591.979118][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.979118][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.979118][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.979118][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.979118][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.979118][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.979118][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.979118][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.979118][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.979118][ T72] netlink_unicast+0x449/0x710 [ 2591.979118][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.979118][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.979118][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.979118][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.979118][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.979118][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.979118][ T72] [ 2591.981344][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2591.981344][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.981344][ T72] ipv6_find_idev+0x102/0x170 [ 2591.981344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.981344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.981344][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.981344][ T72] netlink_unicast+0x449/0x710 [ 2591.981344][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.981344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.981344][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.981344][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.981344][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.981344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.981344][ T72] [ 2591.983094][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2591.983094][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.983094][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.983094][ T72] ipv6_find_idev+0x102/0x170 [ 2591.983094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.983094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.983094][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.983094][ T72] netlink_unicast+0x449/0x710 [ 2591.983094][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.983094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.983094][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.983094][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.983094][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.983094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.983094][ T72] [ 2591.985497][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2591.985764][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2591.985764][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.985764][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.985764][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.985764][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.985764][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.985764][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.985764][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.985764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.985764][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.985764][ T72] netlink_unicast+0x449/0x710 [ 2591.985764][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.985764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.985764][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.985764][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.985764][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.985764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.985764][ T72] [ 2591.988074][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2591.988074][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.988074][ T72] ipv6_find_idev+0x102/0x170 [ 2591.988074][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.988074][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.988074][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.988074][ T72] netlink_unicast+0x449/0x710 [ 2591.988074][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.988074][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.988074][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.988074][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.988074][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.988074][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.988074][ T72] [ 2591.989779][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2591.989779][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.989779][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.989779][ T72] ipv6_find_idev+0x102/0x170 [ 2591.989779][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.989779][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.989779][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.989779][ T72] netlink_unicast+0x449/0x710 [ 2591.989779][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.989779][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.989779][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.989779][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.989779][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.989779][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.989779][ T72] [ 2591.991660][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2591.991982][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2591.991982][ T72] netdev_get_by_index+0x5e/0x80 [ 2591.991982][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2591.991982][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2591.991982][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2591.991982][ T72] ipv6_add_addr+0x411/0x2000 [ 2591.991982][ T72] inet6_addr_add+0x30e/0xa40 [ 2591.991982][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2591.991982][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.991982][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.991982][ T72] netlink_unicast+0x449/0x710 [ 2591.991982][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.991982][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.991982][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.991982][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.991982][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.991982][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.991982][ T72] [ 2591.994202][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2591.994202][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2591.994202][ T72] ipv6_find_idev+0x102/0x170 [ 2591.994202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.994202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.994202][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.994202][ T72] netlink_unicast+0x449/0x710 [ 2591.994202][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.994202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.994202][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.994202][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.994202][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.994202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.994202][ T72] [ 2591.995905][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2591.995905][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2591.995905][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2591.995905][ T72] ipv6_find_idev+0x102/0x170 [ 2591.995905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2591.995905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2591.995905][ T72] netlink_rcv_skb+0x130/0x360 [ 2591.995905][ T72] netlink_unicast+0x449/0x710 [ 2591.995905][ T72] netlink_sendmsg+0x723/0xbe0 [ 2591.995905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2591.995905][ T72] ___sys_sendmsg+0xee/0x170 [ 2591.995905][ T72] __sys_sendmsg+0xcd/0x170 [ 2591.995905][ T72] do_syscall_64+0xc6/0x1e0 [ 2591.995905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2591.995905][ T72] [ 2602.238844][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2602.239297][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2602.239297][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.239297][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.239297][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.239297][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.239297][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.239297][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.239297][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.239297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.239297][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.239297][ T72] netlink_unicast+0x449/0x710 [ 2602.239297][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.239297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.239297][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.239297][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.239297][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.239297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.239297][ T72] [ 2602.241485][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2602.241485][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.241485][ T72] ipv6_find_idev+0x102/0x170 [ 2602.241485][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.241485][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.241485][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.241485][ T72] netlink_unicast+0x449/0x710 [ 2602.241485][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.241485][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.241485][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.241485][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.241485][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.241485][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.241485][ T72] [ 2602.243159][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2602.243159][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.243159][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.243159][ T72] ipv6_find_idev+0x102/0x170 [ 2602.243159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.243159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.243159][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.243159][ T72] netlink_unicast+0x449/0x710 [ 2602.243159][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.243159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.243159][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.243159][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.243159][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.243159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.243159][ T72] [ 2602.244997][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2602.245292][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2602.245292][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.245292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.245292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.245292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.245292][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.245292][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.245292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.245292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.245292][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.245292][ T72] netlink_unicast+0x449/0x710 [ 2602.245292][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.245292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.245292][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.245292][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.245292][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.245292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.245292][ T72] [ 2602.247476][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2602.247476][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.247476][ T72] ipv6_find_idev+0x102/0x170 [ 2602.247476][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.247476][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.247476][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.247476][ T72] netlink_unicast+0x449/0x710 [ 2602.247476][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.247476][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.247476][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.247476][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.247476][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.247476][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.247476][ T72] [ 2602.249164][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2602.249164][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.249164][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.249164][ T72] ipv6_find_idev+0x102/0x170 [ 2602.249164][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.249164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.249164][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.249164][ T72] netlink_unicast+0x449/0x710 [ 2602.249164][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.249164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.249164][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.249164][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.249164][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.249164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.249164][ T72] [ 2602.250992][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2602.251275][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2602.251275][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.251275][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.251275][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.251275][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.251275][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.251275][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.251275][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.251275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.251275][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.251275][ T72] netlink_unicast+0x449/0x710 [ 2602.251275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.251275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.251275][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.251275][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.251275][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.251275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.251275][ T72] [ 2602.253436][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2602.253436][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.253436][ T72] ipv6_find_idev+0x102/0x170 [ 2602.253436][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.253436][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.253436][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.253436][ T72] netlink_unicast+0x449/0x710 [ 2602.253436][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.253436][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.253436][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.253436][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.253436][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.253436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.253436][ T72] [ 2602.255090][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2602.255090][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.255090][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.255090][ T72] ipv6_find_idev+0x102/0x170 [ 2602.255090][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.255090][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.255090][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.255090][ T72] netlink_unicast+0x449/0x710 [ 2602.255090][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.255090][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.255090][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.255090][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.255090][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.255090][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.255090][ T72] [ 2602.256881][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2602.257162][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2602.257162][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.257162][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.257162][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.257162][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.257162][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.257162][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.257162][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.257162][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.257162][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.257162][ T72] netlink_unicast+0x449/0x710 [ 2602.257162][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.257162][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.257162][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.257162][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.257162][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.257162][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.257162][ T72] [ 2602.259373][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2602.259373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.259373][ T72] ipv6_find_idev+0x102/0x170 [ 2602.259373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.259373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.259373][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.259373][ T72] netlink_unicast+0x449/0x710 [ 2602.259373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.259373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.259373][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.259373][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.259373][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.259373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.259373][ T72] [ 2602.261002][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2602.261002][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.261002][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.261002][ T72] ipv6_find_idev+0x102/0x170 [ 2602.261002][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.261002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.261002][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.261002][ T72] netlink_unicast+0x449/0x710 [ 2602.261002][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.261002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.261002][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.261002][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.261002][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.261002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.261002][ T72] [ 2602.263107][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2602.263381][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2602.263381][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.263381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.263381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.263381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.263381][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.263381][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.263381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.263381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.263381][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.263381][ T72] netlink_unicast+0x449/0x710 [ 2602.263381][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.263381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.263381][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.263381][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.263381][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.263381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.263381][ T72] [ 2602.265363][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2602.265363][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.265363][ T72] ipv6_find_idev+0x102/0x170 [ 2602.265363][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.265363][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.265363][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.265363][ T72] netlink_unicast+0x449/0x710 [ 2602.265363][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.265363][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.265363][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.265363][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.265363][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.265363][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.265363][ T72] [ 2602.266987][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2602.266987][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.266987][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.266987][ T72] ipv6_find_idev+0x102/0x170 [ 2602.266987][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.266987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.266987][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.266987][ T72] netlink_unicast+0x449/0x710 [ 2602.266987][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.266987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.266987][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.266987][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.266987][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.266987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.266987][ T72] [ 2602.268867][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2602.269151][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2602.269151][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.269151][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.269151][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.269151][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.269151][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.269151][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.269151][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.269151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.269151][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.269151][ T72] netlink_unicast+0x449/0x710 [ 2602.269151][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.269151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.269151][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.269151][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.269151][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.269151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.269151][ T72] [ 2602.271520][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2602.271520][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.271520][ T72] ipv6_find_idev+0x102/0x170 [ 2602.271520][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.271520][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.271520][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.271520][ T72] netlink_unicast+0x449/0x710 [ 2602.271520][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.271520][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.271520][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.271520][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.271520][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.271520][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.271520][ T72] [ 2602.273437][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2602.273437][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.273437][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.273437][ T72] ipv6_find_idev+0x102/0x170 [ 2602.273437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.273437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.273437][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.273437][ T72] netlink_unicast+0x449/0x710 [ 2602.273437][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.273437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.273437][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.273437][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.273437][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.273437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.273437][ T72] [ 2602.275477][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2602.275761][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2602.275761][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.275761][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.275761][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.275761][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.275761][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.275761][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.275761][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.275761][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.275761][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.275761][ T72] netlink_unicast+0x449/0x710 [ 2602.275761][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.275761][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.275761][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.275761][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.275761][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.275761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.275761][ T72] [ 2602.278192][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2602.278192][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.278192][ T72] ipv6_find_idev+0x102/0x170 [ 2602.278192][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.278192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.278192][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.278192][ T72] netlink_unicast+0x449/0x710 [ 2602.278192][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.278192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.278192][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.278192][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.278192][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.278192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.278192][ T72] [ 2602.280054][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2602.280054][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.280054][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.280054][ T72] ipv6_find_idev+0x102/0x170 [ 2602.280054][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.280054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.280054][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.280054][ T72] netlink_unicast+0x449/0x710 [ 2602.280054][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.280054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.280054][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.280054][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.280054][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.280054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.280054][ T72] [ 2602.282112][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2602.282417][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2602.282417][ T72] netdev_get_by_index+0x5e/0x80 [ 2602.282417][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2602.282417][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2602.282417][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2602.282417][ T72] ipv6_add_addr+0x411/0x2000 [ 2602.282417][ T72] inet6_addr_add+0x30e/0xa40 [ 2602.282417][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2602.282417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.282417][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.282417][ T72] netlink_unicast+0x449/0x710 [ 2602.282417][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.282417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.282417][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.282417][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.282417][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.282417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.282417][ T72] [ 2602.284819][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2602.284819][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2602.284819][ T72] ipv6_find_idev+0x102/0x170 [ 2602.284819][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.284819][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.284819][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.284819][ T72] netlink_unicast+0x449/0x710 [ 2602.284819][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.284819][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.284819][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.284819][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.284819][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.284819][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.284819][ T72] [ 2602.286669][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2602.286669][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2602.286669][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2602.286669][ T72] ipv6_find_idev+0x102/0x170 [ 2602.286669][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2602.286669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2602.286669][ T72] netlink_rcv_skb+0x130/0x360 [ 2602.286669][ T72] netlink_unicast+0x449/0x710 [ 2602.286669][ T72] netlink_sendmsg+0x723/0xbe0 [ 2602.286669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2602.286669][ T72] ___sys_sendmsg+0xee/0x170 [ 2602.286669][ T72] __sys_sendmsg+0xcd/0x170 [ 2602.286669][ T72] do_syscall_64+0xc6/0x1e0 [ 2602.286669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2602.286669][ T72] [ 2612.526817][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2612.527310][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2612.527310][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.527310][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.527310][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.527310][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.527310][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.527310][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.527310][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.527310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.527310][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.527310][ T72] netlink_unicast+0x449/0x710 [ 2612.527310][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.527310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.527310][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.527310][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.527310][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.527310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.527310][ T72] [ 2612.529316][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2612.529316][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.529316][ T72] ipv6_find_idev+0x102/0x170 [ 2612.529316][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.529316][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.529316][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.529316][ T72] netlink_unicast+0x449/0x710 [ 2612.529316][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.529316][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.529316][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.529316][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.529316][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.529316][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.529316][ T72] [ 2612.530960][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2612.530960][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.530960][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.530960][ T72] ipv6_find_idev+0x102/0x170 [ 2612.530960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.530960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.530960][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.530960][ T72] netlink_unicast+0x449/0x710 [ 2612.530960][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.530960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.530960][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.530960][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.530960][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.530960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.530960][ T72] [ 2612.532791][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2612.533077][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2612.533077][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.533077][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.533077][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.533077][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.533077][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.533077][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.533077][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.533077][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.533077][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.533077][ T72] netlink_unicast+0x449/0x710 [ 2612.533077][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.533077][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.533077][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.533077][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.533077][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.533077][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.533077][ T72] [ 2612.535259][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2612.535259][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.535259][ T72] ipv6_find_idev+0x102/0x170 [ 2612.535259][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.535259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.535259][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.535259][ T72] netlink_unicast+0x449/0x710 [ 2612.535259][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.535259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.535259][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.535259][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.535259][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.535259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.535259][ T72] [ 2612.536942][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2612.536942][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.536942][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.536942][ T72] ipv6_find_idev+0x102/0x170 [ 2612.536942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.536942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.536942][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.536942][ T72] netlink_unicast+0x449/0x710 [ 2612.536942][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.536942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.536942][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.536942][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.536942][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.536942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.536942][ T72] [ 2612.538786][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2612.539086][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2612.539086][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.539086][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.539086][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.539086][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.539086][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.539086][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.539086][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.539086][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.539086][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.539086][ T72] netlink_unicast+0x449/0x710 [ 2612.539086][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.539086][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.539086][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.539086][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.539086][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.539086][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.539086][ T72] [ 2612.541268][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2612.541268][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.541268][ T72] ipv6_find_idev+0x102/0x170 [ 2612.541268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.541268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.541268][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.541268][ T72] netlink_unicast+0x449/0x710 [ 2612.541268][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.541268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.541268][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.541268][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.541268][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.541268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.541268][ T72] [ 2612.542965][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2612.542965][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.542965][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.542965][ T72] ipv6_find_idev+0x102/0x170 [ 2612.542965][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.542965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.542965][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.542965][ T72] netlink_unicast+0x449/0x710 [ 2612.542965][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.542965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.542965][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.542965][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.542965][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.542965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.542965][ T72] [ 2612.544794][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2612.545077][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2612.545077][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.545077][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.545077][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.545077][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.545077][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.545077][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.545077][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.545077][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.545077][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.545077][ T72] netlink_unicast+0x449/0x710 [ 2612.545077][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.545077][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.545077][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.545077][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.545077][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.545077][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.545077][ T72] [ 2612.547268][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2612.547268][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.547268][ T72] ipv6_find_idev+0x102/0x170 [ 2612.547268][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.547268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.547268][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.547268][ T72] netlink_unicast+0x449/0x710 [ 2612.547268][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.547268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.547268][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.547268][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.547268][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.547268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.547268][ T72] [ 2612.548897][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2612.548897][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.548897][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.548897][ T72] ipv6_find_idev+0x102/0x170 [ 2612.548897][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.548897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.548897][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.548897][ T72] netlink_unicast+0x449/0x710 [ 2612.548897][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.548897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.548897][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.548897][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.548897][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.548897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.548897][ T72] [ 2612.550981][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2612.551574][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2612.551574][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.551574][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.551574][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.551574][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.551574][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.551574][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.551574][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.551574][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.551574][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.551574][ T72] netlink_unicast+0x449/0x710 [ 2612.551574][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.551574][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.551574][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.551574][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.551574][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.551574][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.551574][ T72] [ 2612.553628][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2612.553628][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.553628][ T72] ipv6_find_idev+0x102/0x170 [ 2612.553628][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.553628][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.553628][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.553628][ T72] netlink_unicast+0x449/0x710 [ 2612.553628][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.553628][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.553628][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.553628][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.553628][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.553628][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.553628][ T72] [ 2612.555163][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2612.555163][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.555163][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.555163][ T72] ipv6_find_idev+0x102/0x170 [ 2612.555163][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.555163][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.555163][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.555163][ T72] netlink_unicast+0x449/0x710 [ 2612.555163][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.555163][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.555163][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.555163][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.555163][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.555163][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.555163][ T72] [ 2612.556848][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2612.557114][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2612.557114][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.557114][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.557114][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.557114][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.557114][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.557114][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.557114][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.557114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.557114][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.557114][ T72] netlink_unicast+0x449/0x710 [ 2612.557114][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.557114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.557114][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.557114][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.557114][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.557114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.557114][ T72] [ 2612.559237][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2612.559237][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.559237][ T72] ipv6_find_idev+0x102/0x170 [ 2612.559237][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.559237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.559237][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.559237][ T72] netlink_unicast+0x449/0x710 [ 2612.559237][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.559237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.559237][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.559237][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.559237][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.559237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.559237][ T72] [ 2612.560852][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2612.560852][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.560852][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.560852][ T72] ipv6_find_idev+0x102/0x170 [ 2612.560852][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.560852][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.560852][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.560852][ T72] netlink_unicast+0x449/0x710 [ 2612.560852][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.560852][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.560852][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.560852][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.560852][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.560852][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.560852][ T72] [ 2612.562947][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2612.563254][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2612.563254][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.563254][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.563254][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.563254][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.563254][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.563254][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.563254][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.563254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.563254][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.563254][ T72] netlink_unicast+0x449/0x710 [ 2612.563254][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.563254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.563254][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.563254][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.563254][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.563254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.563254][ T72] [ 2612.565417][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2612.565417][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.565417][ T72] ipv6_find_idev+0x102/0x170 [ 2612.565417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.565417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.565417][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.565417][ T72] netlink_unicast+0x449/0x710 [ 2612.565417][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.565417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.565417][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.565417][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.565417][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.565417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.565417][ T72] [ 2612.567122][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2612.567122][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.567122][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.567122][ T72] ipv6_find_idev+0x102/0x170 [ 2612.567122][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.567122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.567122][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.567122][ T72] netlink_unicast+0x449/0x710 [ 2612.567122][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.567122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.567122][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.567122][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.567122][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.567122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.567122][ T72] [ 2612.569018][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2612.569324][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2612.569324][ T72] netdev_get_by_index+0x5e/0x80 [ 2612.569324][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2612.569324][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2612.569324][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2612.569324][ T72] ipv6_add_addr+0x411/0x2000 [ 2612.569324][ T72] inet6_addr_add+0x30e/0xa40 [ 2612.569324][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2612.569324][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.569324][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.569324][ T72] netlink_unicast+0x449/0x710 [ 2612.569324][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.569324][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.569324][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.569324][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.569324][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.569324][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.569324][ T72] [ 2612.571482][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2612.571482][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2612.571482][ T72] ipv6_find_idev+0x102/0x170 [ 2612.571482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.571482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.571482][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.571482][ T72] netlink_unicast+0x449/0x710 [ 2612.571482][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.571482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.571482][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.571482][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.571482][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.571482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.571482][ T72] [ 2612.573191][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2612.573191][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2612.573191][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2612.573191][ T72] ipv6_find_idev+0x102/0x170 [ 2612.573191][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2612.573191][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2612.573191][ T72] netlink_rcv_skb+0x130/0x360 [ 2612.573191][ T72] netlink_unicast+0x449/0x710 [ 2612.573191][ T72] netlink_sendmsg+0x723/0xbe0 [ 2612.573191][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2612.573191][ T72] ___sys_sendmsg+0xee/0x170 [ 2612.573191][ T72] __sys_sendmsg+0xcd/0x170 [ 2612.573191][ T72] do_syscall_64+0xc6/0x1e0 [ 2612.573191][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2612.573191][ T72] [ 2622.814792][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2622.815229][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2622.815229][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.815229][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.815229][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.815229][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.815229][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.815229][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.815229][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.815229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.815229][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.815229][ T72] netlink_unicast+0x449/0x710 [ 2622.815229][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.815229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.815229][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.815229][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.815229][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.815229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.815229][ T72] [ 2622.817296][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2622.817296][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.817296][ T72] ipv6_find_idev+0x102/0x170 [ 2622.817296][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.817296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.817296][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.817296][ T72] netlink_unicast+0x449/0x710 [ 2622.817296][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.817296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.817296][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.817296][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.817296][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.817296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.817296][ T72] [ 2622.818863][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2622.818863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.818863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.818863][ T72] ipv6_find_idev+0x102/0x170 [ 2622.818863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.818863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.818863][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.818863][ T72] netlink_unicast+0x449/0x710 [ 2622.818863][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.818863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.818863][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.818863][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.818863][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.818863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.818863][ T72] [ 2622.820592][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2622.820889][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2622.820889][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.820889][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.820889][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.820889][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.820889][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.820889][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.820889][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.820889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.820889][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.820889][ T72] netlink_unicast+0x449/0x710 [ 2622.820889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.820889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.820889][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.820889][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.820889][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.820889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.820889][ T72] [ 2622.822920][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2622.822920][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.822920][ T72] ipv6_find_idev+0x102/0x170 [ 2622.822920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.822920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.822920][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.822920][ T72] netlink_unicast+0x449/0x710 [ 2622.822920][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.822920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.822920][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.822920][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.822920][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.822920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.822920][ T72] [ 2622.824493][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2622.824493][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.824493][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.824493][ T72] ipv6_find_idev+0x102/0x170 [ 2622.824493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.824493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.824493][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.824493][ T72] netlink_unicast+0x449/0x710 [ 2622.824493][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.824493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.824493][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.824493][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.824493][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.824493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.824493][ T72] [ 2622.826220][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2622.826497][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2622.826497][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.826497][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.826497][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.826497][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.826497][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.826497][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.826497][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.826497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.826497][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.826497][ T72] netlink_unicast+0x449/0x710 [ 2622.826497][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.826497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.826497][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.826497][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.826497][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.826497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.826497][ T72] [ 2622.828493][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2622.828493][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.828493][ T72] ipv6_find_idev+0x102/0x170 [ 2622.828493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.828493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.828493][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.828493][ T72] netlink_unicast+0x449/0x710 [ 2622.828493][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.828493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.828493][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.828493][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.828493][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.828493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.828493][ T72] [ 2622.830041][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2622.830041][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.830041][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.830041][ T72] ipv6_find_idev+0x102/0x170 [ 2622.830041][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.830041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.830041][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.830041][ T72] netlink_unicast+0x449/0x710 [ 2622.830041][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.830041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.830041][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.830041][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.830041][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.830041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.830041][ T72] [ 2622.831812][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2622.832079][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2622.832079][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.832079][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.832079][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.832079][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.832079][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.832079][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.832079][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.832079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.832079][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.832079][ T72] netlink_unicast+0x449/0x710 [ 2622.832079][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.832079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.832079][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.832079][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.832079][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.832079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.832079][ T72] [ 2622.834083][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2622.834083][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.834083][ T72] ipv6_find_idev+0x102/0x170 [ 2622.834083][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.834083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.834083][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.834083][ T72] netlink_unicast+0x449/0x710 [ 2622.834083][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.834083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.834083][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.834083][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.834083][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.834083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.834083][ T72] [ 2622.835622][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2622.835622][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.835622][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.835622][ T72] ipv6_find_idev+0x102/0x170 [ 2622.835622][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.835622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.835622][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.835622][ T72] netlink_unicast+0x449/0x710 [ 2622.835622][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.835622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.835622][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.835622][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.835622][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.835622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.835622][ T72] [ 2622.837704][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2622.838313][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2622.838313][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.838313][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.838313][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.838313][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.838313][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.838313][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.838313][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.838313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.838313][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.838313][ T72] netlink_unicast+0x449/0x710 [ 2622.838313][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.838313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.838313][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.838313][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.838313][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.838313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.838313][ T72] [ 2622.840332][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2622.840332][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.840332][ T72] ipv6_find_idev+0x102/0x170 [ 2622.840332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.840332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.840332][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.840332][ T72] netlink_unicast+0x449/0x710 [ 2622.840332][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.840332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.840332][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.840332][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.840332][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.840332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.840332][ T72] [ 2622.841861][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2622.841861][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.841861][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.841861][ T72] ipv6_find_idev+0x102/0x170 [ 2622.841861][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.841861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.841861][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.841861][ T72] netlink_unicast+0x449/0x710 [ 2622.841861][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.841861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.841861][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.841861][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.841861][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.841861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.841861][ T72] [ 2622.843537][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2622.843864][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2622.843864][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.843864][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.843864][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.843864][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.843864][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.843864][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.843864][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.843864][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.843864][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.843864][ T72] netlink_unicast+0x449/0x710 [ 2622.843864][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.843864][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.843864][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.843864][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.843864][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.843864][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.843864][ T72] [ 2622.845923][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2622.845923][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.845923][ T72] ipv6_find_idev+0x102/0x170 [ 2622.845923][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.845923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.845923][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.845923][ T72] netlink_unicast+0x449/0x710 [ 2622.845923][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.845923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.845923][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.845923][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.845923][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.845923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.845923][ T72] [ 2622.847562][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2622.847562][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.847562][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.847562][ T72] ipv6_find_idev+0x102/0x170 [ 2622.847562][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.847562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.847562][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.847562][ T72] netlink_unicast+0x449/0x710 [ 2622.847562][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.847562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.847562][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.847562][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.847562][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.847562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.847562][ T72] [ 2622.849492][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2622.849816][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2622.849816][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.849816][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.849816][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.849816][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.849816][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.849816][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.849816][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.849816][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.849816][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.849816][ T72] netlink_unicast+0x449/0x710 [ 2622.849816][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.849816][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.849816][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.849816][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.849816][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.849816][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.849816][ T72] [ 2622.852084][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2622.852084][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.852084][ T72] ipv6_find_idev+0x102/0x170 [ 2622.852084][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.852084][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.852084][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.852084][ T72] netlink_unicast+0x449/0x710 [ 2622.852084][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.852084][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.852084][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.852084][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.852084][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.852084][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.852084][ T72] [ 2622.853851][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2622.853851][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.853851][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.853851][ T72] ipv6_find_idev+0x102/0x170 [ 2622.853851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.853851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.853851][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.853851][ T72] netlink_unicast+0x449/0x710 [ 2622.853851][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.853851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.853851][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.853851][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.853851][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.853851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.853851][ T72] [ 2622.855769][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2622.856080][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2622.856080][ T72] netdev_get_by_index+0x5e/0x80 [ 2622.856080][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2622.856080][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2622.856080][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2622.856080][ T72] ipv6_add_addr+0x411/0x2000 [ 2622.856080][ T72] inet6_addr_add+0x30e/0xa40 [ 2622.856080][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2622.856080][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.856080][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.856080][ T72] netlink_unicast+0x449/0x710 [ 2622.856080][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.856080][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.856080][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.856080][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.856080][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.856080][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.856080][ T72] [ 2622.858251][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2622.858251][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2622.858251][ T72] ipv6_find_idev+0x102/0x170 [ 2622.858251][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.858251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.858251][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.858251][ T72] netlink_unicast+0x449/0x710 [ 2622.858251][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.858251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.858251][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.858251][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.858251][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.858251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.858251][ T72] [ 2622.859973][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2622.859973][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2622.859973][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2622.859973][ T72] ipv6_find_idev+0x102/0x170 [ 2622.859973][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2622.859973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2622.859973][ T72] netlink_rcv_skb+0x130/0x360 [ 2622.859973][ T72] netlink_unicast+0x449/0x710 [ 2622.859973][ T72] netlink_sendmsg+0x723/0xbe0 [ 2622.859973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2622.859973][ T72] ___sys_sendmsg+0xee/0x170 [ 2622.859973][ T72] __sys_sendmsg+0xcd/0x170 [ 2622.859973][ T72] do_syscall_64+0xc6/0x1e0 [ 2622.859973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2622.859973][ T72] [ 2633.102838][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2633.103340][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2633.103340][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.103340][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.103340][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.103340][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.103340][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.103340][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.103340][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.103340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.103340][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.103340][ T72] netlink_unicast+0x449/0x710 [ 2633.103340][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.103340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.103340][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.103340][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.103340][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.103340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.103340][ T72] [ 2633.105346][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2633.105346][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.105346][ T72] ipv6_find_idev+0x102/0x170 [ 2633.105346][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.105346][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.105346][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.105346][ T72] netlink_unicast+0x449/0x710 [ 2633.105346][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.105346][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.105346][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.105346][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.105346][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.105346][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.105346][ T72] [ 2633.106886][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2633.106886][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.106886][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.106886][ T72] ipv6_find_idev+0x102/0x170 [ 2633.106886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.106886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.106886][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.106886][ T72] netlink_unicast+0x449/0x710 [ 2633.106886][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.106886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.106886][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.106886][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.106886][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.106886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.106886][ T72] [ 2633.108585][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2633.108887][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2633.108887][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.108887][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.108887][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.108887][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.108887][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.108887][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.108887][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.108887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.108887][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.108887][ T72] netlink_unicast+0x449/0x710 [ 2633.108887][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.108887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.108887][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.108887][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.108887][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.108887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.108887][ T72] [ 2633.110876][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2633.110876][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.110876][ T72] ipv6_find_idev+0x102/0x170 [ 2633.110876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.110876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.110876][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.110876][ T72] netlink_unicast+0x449/0x710 [ 2633.110876][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.110876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.110876][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.110876][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.110876][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.110876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.110876][ T72] [ 2633.112410][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2633.112410][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.112410][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.112410][ T72] ipv6_find_idev+0x102/0x170 [ 2633.112410][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.112410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.112410][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.112410][ T72] netlink_unicast+0x449/0x710 [ 2633.112410][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.112410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.112410][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.112410][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.112410][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.112410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.112410][ T72] [ 2633.114105][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2633.114384][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2633.114384][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.114384][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.114384][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.114384][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.114384][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.114384][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.114384][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.114384][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.114384][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.114384][ T72] netlink_unicast+0x449/0x710 [ 2633.114384][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.114384][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.114384][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.114384][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.114384][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.114384][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.114384][ T72] [ 2633.116370][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2633.116370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.116370][ T72] ipv6_find_idev+0x102/0x170 [ 2633.116370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.116370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.116370][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.116370][ T72] netlink_unicast+0x449/0x710 [ 2633.116370][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.116370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.116370][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.116370][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.116370][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.116370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.116370][ T72] [ 2633.117908][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2633.117908][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.117908][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.117908][ T72] ipv6_find_idev+0x102/0x170 [ 2633.117908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.117908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.117908][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.117908][ T72] netlink_unicast+0x449/0x710 [ 2633.117908][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.117908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.117908][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.117908][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.117908][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.117908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.117908][ T72] [ 2633.119600][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2633.120311][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2633.120311][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.120311][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.120311][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.120311][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.120311][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.120311][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.120311][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.120311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.120311][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.120311][ T72] netlink_unicast+0x449/0x710 [ 2633.120311][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.120311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.120311][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.120311][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.120311][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.120311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.120311][ T72] [ 2633.122297][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2633.122297][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.122297][ T72] ipv6_find_idev+0x102/0x170 [ 2633.122297][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.122297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.122297][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.122297][ T72] netlink_unicast+0x449/0x710 [ 2633.122297][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.122297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.122297][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.122297][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.122297][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.122297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.122297][ T72] [ 2633.123836][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2633.123836][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.123836][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.123836][ T72] ipv6_find_idev+0x102/0x170 [ 2633.123836][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.123836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.123836][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.123836][ T72] netlink_unicast+0x449/0x710 [ 2633.123836][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.123836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.123836][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.123836][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.123836][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.123836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.123836][ T72] [ 2633.125694][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2633.126014][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2633.126014][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.126014][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.126014][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.126014][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.126014][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.126014][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.126014][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.126014][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.126014][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.126014][ T72] netlink_unicast+0x449/0x710 [ 2633.126014][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.126014][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.126014][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.126014][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.126014][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.126014][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.126014][ T72] [ 2633.128001][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2633.128001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.128001][ T72] ipv6_find_idev+0x102/0x170 [ 2633.128001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.128001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.128001][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.128001][ T72] netlink_unicast+0x449/0x710 [ 2633.128001][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.128001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.128001][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.128001][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.128001][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.128001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.128001][ T72] [ 2633.129596][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2633.129596][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.129596][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.129596][ T72] ipv6_find_idev+0x102/0x170 [ 2633.129596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.129596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.129596][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.129596][ T72] netlink_unicast+0x449/0x710 [ 2633.129596][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.129596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.129596][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.129596][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.129596][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.129596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.129596][ T72] [ 2633.131350][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2633.131665][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2633.131665][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.131665][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.131665][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.131665][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.131665][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.131665][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.131665][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.131665][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.131665][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.131665][ T72] netlink_unicast+0x449/0x710 [ 2633.131665][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.131665][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.131665][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.131665][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.131665][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.131665][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.131665][ T72] [ 2633.133745][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2633.133745][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.133745][ T72] ipv6_find_idev+0x102/0x170 [ 2633.133745][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.133745][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.133745][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.133745][ T72] netlink_unicast+0x449/0x710 [ 2633.133745][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.133745][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.133745][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.133745][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.133745][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.133745][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.133745][ T72] [ 2633.135556][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2633.135556][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.135556][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.135556][ T72] ipv6_find_idev+0x102/0x170 [ 2633.135556][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.135556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.135556][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.135556][ T72] netlink_unicast+0x449/0x710 [ 2633.135556][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.135556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.135556][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.135556][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.135556][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.135556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.135556][ T72] [ 2633.137481][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2633.137812][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2633.137812][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.137812][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.137812][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.137812][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.137812][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.137812][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.137812][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.137812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.137812][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.137812][ T72] netlink_unicast+0x449/0x710 [ 2633.137812][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.137812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.137812][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.137812][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.137812][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.137812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.137812][ T72] [ 2633.140041][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2633.140041][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.140041][ T72] ipv6_find_idev+0x102/0x170 [ 2633.140041][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.140041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.140041][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.140041][ T72] netlink_unicast+0x449/0x710 [ 2633.140041][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.140041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.140041][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.140041][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.140041][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.140041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.140041][ T72] [ 2633.141763][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2633.141763][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.141763][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.141763][ T72] ipv6_find_idev+0x102/0x170 [ 2633.141763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.141763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.141763][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.141763][ T72] netlink_unicast+0x449/0x710 [ 2633.141763][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.141763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.141763][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.141763][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.141763][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.141763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.141763][ T72] [ 2633.143655][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2633.143979][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2633.143979][ T72] netdev_get_by_index+0x5e/0x80 [ 2633.143979][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2633.143979][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2633.143979][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2633.143979][ T72] ipv6_add_addr+0x411/0x2000 [ 2633.143979][ T72] inet6_addr_add+0x30e/0xa40 [ 2633.143979][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2633.143979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.143979][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.143979][ T72] netlink_unicast+0x449/0x710 [ 2633.143979][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.143979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.143979][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.143979][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.143979][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.143979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.143979][ T72] [ 2633.146161][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2633.146161][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2633.146161][ T72] ipv6_find_idev+0x102/0x170 [ 2633.146161][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.146161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.146161][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.146161][ T72] netlink_unicast+0x449/0x710 [ 2633.146161][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.146161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.146161][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.146161][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.146161][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.146161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.146161][ T72] [ 2633.147972][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2633.147972][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2633.147972][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2633.147972][ T72] ipv6_find_idev+0x102/0x170 [ 2633.147972][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2633.147972][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2633.147972][ T72] netlink_rcv_skb+0x130/0x360 [ 2633.147972][ T72] netlink_unicast+0x449/0x710 [ 2633.147972][ T72] netlink_sendmsg+0x723/0xbe0 [ 2633.147972][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2633.147972][ T72] ___sys_sendmsg+0xee/0x170 [ 2633.147972][ T72] __sys_sendmsg+0xcd/0x170 [ 2633.147972][ T72] do_syscall_64+0xc6/0x1e0 [ 2633.147972][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2633.147972][ T72] [ 2643.390827][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2643.391254][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2643.391254][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.391254][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.391254][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.391254][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.391254][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.391254][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.391254][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.391254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.391254][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.391254][ T72] netlink_unicast+0x449/0x710 [ 2643.391254][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.391254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.391254][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.391254][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.391254][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.391254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.391254][ T72] [ 2643.393288][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2643.393288][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.393288][ T72] ipv6_find_idev+0x102/0x170 [ 2643.393288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.393288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.393288][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.393288][ T72] netlink_unicast+0x449/0x710 [ 2643.393288][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.393288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.393288][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.393288][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.393288][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.393288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.393288][ T72] [ 2643.394866][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2643.394866][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.394866][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.394866][ T72] ipv6_find_idev+0x102/0x170 [ 2643.394866][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.394866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.394866][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.394866][ T72] netlink_unicast+0x449/0x710 [ 2643.394866][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.394866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.394866][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.394866][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.394866][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.394866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.394866][ T72] [ 2643.396586][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2643.396871][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2643.396871][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.396871][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.396871][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.396871][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.396871][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.396871][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.396871][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.396871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.396871][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.396871][ T72] netlink_unicast+0x449/0x710 [ 2643.396871][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.396871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.396871][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.396871][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.396871][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.396871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.396871][ T72] [ 2643.398883][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2643.398883][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.398883][ T72] ipv6_find_idev+0x102/0x170 [ 2643.398883][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.398883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.398883][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.398883][ T72] netlink_unicast+0x449/0x710 [ 2643.398883][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.398883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.398883][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.398883][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.398883][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.398883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.398883][ T72] [ 2643.400424][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2643.400424][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.400424][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.400424][ T72] ipv6_find_idev+0x102/0x170 [ 2643.400424][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.400424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.400424][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.400424][ T72] netlink_unicast+0x449/0x710 [ 2643.400424][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.400424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.400424][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.400424][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.400424][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.400424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.400424][ T72] [ 2643.402099][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2643.402375][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2643.402375][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.402375][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.402375][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.402375][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.402375][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.402375][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.402375][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.402375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.402375][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.402375][ T72] netlink_unicast+0x449/0x710 [ 2643.402375][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.402375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.402375][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.402375][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.402375][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.402375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.402375][ T72] [ 2643.404765][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2643.404765][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.404765][ T72] ipv6_find_idev+0x102/0x170 [ 2643.404765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.404765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.404765][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.404765][ T72] netlink_unicast+0x449/0x710 [ 2643.404765][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.404765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.404765][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.404765][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.404765][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.404765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.404765][ T72] [ 2643.406335][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2643.406335][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.406335][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.406335][ T72] ipv6_find_idev+0x102/0x170 [ 2643.406335][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.406335][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.406335][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.406335][ T72] netlink_unicast+0x449/0x710 [ 2643.406335][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.406335][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.406335][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.406335][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.406335][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.406335][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.406335][ T72] [ 2643.408021][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2643.408307][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2643.408307][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.408307][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.408307][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.408307][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.408307][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.408307][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.408307][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.408307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.408307][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.408307][ T72] netlink_unicast+0x449/0x710 [ 2643.408307][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.408307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.408307][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.408307][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.408307][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.408307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.408307][ T72] [ 2643.410323][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2643.410323][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.410323][ T72] ipv6_find_idev+0x102/0x170 [ 2643.410323][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.410323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.410323][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.410323][ T72] netlink_unicast+0x449/0x710 [ 2643.410323][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.410323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.410323][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.410323][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.410323][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.410323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.410323][ T72] [ 2643.411885][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2643.411885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.411885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.411885][ T72] ipv6_find_idev+0x102/0x170 [ 2643.411885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.411885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.411885][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.411885][ T72] netlink_unicast+0x449/0x710 [ 2643.411885][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.411885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.411885][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.411885][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.411885][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.411885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.411885][ T72] [ 2643.414361][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2643.414632][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2643.414632][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.414632][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.414632][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.414632][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.414632][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.414632][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.414632][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.414632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.414632][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.414632][ T72] netlink_unicast+0x449/0x710 [ 2643.414632][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.414632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.414632][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.414632][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.414632][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.414632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.414632][ T72] [ 2643.416717][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2643.416717][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.416717][ T72] ipv6_find_idev+0x102/0x170 [ 2643.416717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.416717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.416717][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.416717][ T72] netlink_unicast+0x449/0x710 [ 2643.416717][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.416717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.416717][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.416717][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.416717][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.416717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.416717][ T72] [ 2643.418236][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2643.418236][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.418236][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.418236][ T72] ipv6_find_idev+0x102/0x170 [ 2643.418236][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.418236][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.418236][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.418236][ T72] netlink_unicast+0x449/0x710 [ 2643.418236][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.418236][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.418236][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.418236][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.418236][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.418236][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.418236][ T72] [ 2643.419960][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2643.420237][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2643.420237][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.420237][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.420237][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.420237][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.420237][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.420237][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.420237][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.420237][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.420237][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.420237][ T72] netlink_unicast+0x449/0x710 [ 2643.420237][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.420237][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.420237][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.420237][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.420237][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.420237][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.420237][ T72] [ 2643.422417][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2643.422417][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.422417][ T72] ipv6_find_idev+0x102/0x170 [ 2643.422417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.422417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.422417][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.422417][ T72] netlink_unicast+0x449/0x710 [ 2643.422417][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.422417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.422417][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.422417][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.422417][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.422417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.422417][ T72] [ 2643.424192][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2643.424192][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.424192][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.424192][ T72] ipv6_find_idev+0x102/0x170 [ 2643.424192][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.424192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.424192][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.424192][ T72] netlink_unicast+0x449/0x710 [ 2643.424192][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.424192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.424192][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.424192][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.424192][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.424192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.424192][ T72] [ 2643.426080][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2643.426347][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2643.426347][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.426347][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.426347][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.426347][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.426347][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.426347][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.426347][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.426347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.426347][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.426347][ T72] netlink_unicast+0x449/0x710 [ 2643.426347][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.426347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.426347][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.426347][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.426347][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.426347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.426347][ T72] [ 2643.428502][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2643.428502][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.428502][ T72] ipv6_find_idev+0x102/0x170 [ 2643.428502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.428502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.428502][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.428502][ T72] netlink_unicast+0x449/0x710 [ 2643.428502][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.428502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.428502][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.428502][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.428502][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.428502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.428502][ T72] [ 2643.430220][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2643.430220][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.430220][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.430220][ T72] ipv6_find_idev+0x102/0x170 [ 2643.430220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.430220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.430220][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.430220][ T72] netlink_unicast+0x449/0x710 [ 2643.430220][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.430220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.430220][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.430220][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.430220][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.430220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.430220][ T72] [ 2643.432110][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2643.432381][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2643.432381][ T72] netdev_get_by_index+0x5e/0x80 [ 2643.432381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2643.432381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2643.432381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2643.432381][ T72] ipv6_add_addr+0x411/0x2000 [ 2643.432381][ T72] inet6_addr_add+0x30e/0xa40 [ 2643.432381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2643.432381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.432381][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.432381][ T72] netlink_unicast+0x449/0x710 [ 2643.432381][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.432381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.432381][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.432381][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.432381][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.432381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.432381][ T72] [ 2643.434605][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2643.434605][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2643.434605][ T72] ipv6_find_idev+0x102/0x170 [ 2643.434605][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.434605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.434605][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.434605][ T72] netlink_unicast+0x449/0x710 [ 2643.434605][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.434605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.434605][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.434605][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.434605][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.434605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.434605][ T72] [ 2643.436310][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2643.436310][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2643.436310][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2643.436310][ T72] ipv6_find_idev+0x102/0x170 [ 2643.436310][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2643.436310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2643.436310][ T72] netlink_rcv_skb+0x130/0x360 [ 2643.436310][ T72] netlink_unicast+0x449/0x710 [ 2643.436310][ T72] netlink_sendmsg+0x723/0xbe0 [ 2643.436310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2643.436310][ T72] ___sys_sendmsg+0xee/0x170 [ 2643.436310][ T72] __sys_sendmsg+0xcd/0x170 [ 2643.436310][ T72] do_syscall_64+0xc6/0x1e0 [ 2643.436310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2643.436310][ T72] [ 2653.678799][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2653.679225][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2653.679225][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.679225][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.679225][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.679225][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.679225][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.679225][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.679225][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.679225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.679225][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.679225][ T72] netlink_unicast+0x449/0x710 [ 2653.679225][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.679225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.679225][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.679225][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.679225][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.679225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.679225][ T72] [ 2653.681298][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2653.681298][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.681298][ T72] ipv6_find_idev+0x102/0x170 [ 2653.681298][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.681298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.681298][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.681298][ T72] netlink_unicast+0x449/0x710 [ 2653.681298][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.681298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.681298][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.681298][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.681298][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.681298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.681298][ T72] [ 2653.682879][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2653.682879][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.682879][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.682879][ T72] ipv6_find_idev+0x102/0x170 [ 2653.682879][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.682879][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.682879][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.682879][ T72] netlink_unicast+0x449/0x710 [ 2653.682879][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.682879][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.682879][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.682879][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.682879][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.682879][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.682879][ T72] [ 2653.684632][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2653.684935][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2653.684935][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.684935][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.684935][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.684935][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.684935][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.684935][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.684935][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.684935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.684935][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.684935][ T72] netlink_unicast+0x449/0x710 [ 2653.684935][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.684935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.684935][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.684935][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.684935][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.684935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.684935][ T72] [ 2653.686941][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2653.686941][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.686941][ T72] ipv6_find_idev+0x102/0x170 [ 2653.686941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.686941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.686941][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.686941][ T72] netlink_unicast+0x449/0x710 [ 2653.686941][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.686941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.686941][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.686941][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.686941][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.686941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.686941][ T72] [ 2653.688502][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2653.688502][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.688502][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.688502][ T72] ipv6_find_idev+0x102/0x170 [ 2653.688502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.688502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.688502][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.688502][ T72] netlink_unicast+0x449/0x710 [ 2653.688502][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.688502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.688502][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.688502][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.688502][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.688502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.688502][ T72] [ 2653.690199][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2653.690481][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2653.690481][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.690481][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.690481][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.690481][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.690481][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.690481][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.690481][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.690481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.690481][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.690481][ T72] netlink_unicast+0x449/0x710 [ 2653.690481][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.690481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.690481][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.690481][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.690481][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.690481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.690481][ T72] [ 2653.692496][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2653.692496][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.692496][ T72] ipv6_find_idev+0x102/0x170 [ 2653.692496][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.692496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.692496][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.692496][ T72] netlink_unicast+0x449/0x710 [ 2653.692496][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.692496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.692496][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.692496][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.692496][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.692496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.692496][ T72] [ 2653.694054][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2653.694054][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.694054][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.694054][ T72] ipv6_find_idev+0x102/0x170 [ 2653.694054][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.694054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.694054][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.694054][ T72] netlink_unicast+0x449/0x710 [ 2653.694054][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.694054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.694054][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.694054][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.694054][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.694054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.694054][ T72] [ 2653.695779][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2653.696065][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2653.696065][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.696065][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.696065][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.696065][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.696065][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.696065][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.696065][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.696065][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.696065][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.696065][ T72] netlink_unicast+0x449/0x710 [ 2653.696065][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.696065][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.696065][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.696065][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.696065][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.696065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.696065][ T72] [ 2653.698101][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2653.698101][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.698101][ T72] ipv6_find_idev+0x102/0x170 [ 2653.698101][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.698101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.698101][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.698101][ T72] netlink_unicast+0x449/0x710 [ 2653.698101][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.698101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.698101][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.698101][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.698101][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.698101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.698101][ T72] [ 2653.699691][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2653.699691][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.699691][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.699691][ T72] ipv6_find_idev+0x102/0x170 [ 2653.699691][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.699691][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.699691][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.699691][ T72] netlink_unicast+0x449/0x710 [ 2653.699691][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.699691][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.699691][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.699691][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.699691][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.699691][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.699691][ T72] [ 2653.701824][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2653.702091][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2653.702091][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.702091][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.702091][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.702091][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.702091][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.702091][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.702091][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.702091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.702091][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.702091][ T72] netlink_unicast+0x449/0x710 [ 2653.702091][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.702091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.702091][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.702091][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.702091][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.702091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.702091][ T72] [ 2653.704121][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2653.704121][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.704121][ T72] ipv6_find_idev+0x102/0x170 [ 2653.704121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.704121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.704121][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.704121][ T72] netlink_unicast+0x449/0x710 [ 2653.704121][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.704121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.704121][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.704121][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.704121][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.704121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.704121][ T72] [ 2653.705660][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2653.705660][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.705660][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.705660][ T72] ipv6_find_idev+0x102/0x170 [ 2653.705660][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.705660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.705660][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.705660][ T72] netlink_unicast+0x449/0x710 [ 2653.705660][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.705660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.705660][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.705660][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.705660][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.705660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.705660][ T72] [ 2653.707383][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2653.707647][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2653.707647][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.707647][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.707647][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.707647][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.707647][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.707647][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.707647][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.707647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.707647][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.707647][ T72] netlink_unicast+0x449/0x710 [ 2653.707647][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.707647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.707647][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.707647][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.707647][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.707647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.707647][ T72] [ 2653.709989][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2653.709989][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.709989][ T72] ipv6_find_idev+0x102/0x170 [ 2653.709989][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.709989][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.709989][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.709989][ T72] netlink_unicast+0x449/0x710 [ 2653.709989][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.709989][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.709989][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.709989][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.709989][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.709989][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.709989][ T72] [ 2653.711803][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2653.711803][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.711803][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.711803][ T72] ipv6_find_idev+0x102/0x170 [ 2653.711803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.711803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.711803][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.711803][ T72] netlink_unicast+0x449/0x710 [ 2653.711803][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.711803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.711803][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.711803][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.711803][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.711803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.711803][ T72] [ 2653.713766][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2653.714035][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2653.714035][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.714035][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.714035][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.714035][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.714035][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.714035][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.714035][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.714035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.714035][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.714035][ T72] netlink_unicast+0x449/0x710 [ 2653.714035][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.714035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.714035][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.714035][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.714035][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.714035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.714035][ T72] [ 2653.716319][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2653.716319][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.716319][ T72] ipv6_find_idev+0x102/0x170 [ 2653.716319][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.716319][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.716319][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.716319][ T72] netlink_unicast+0x449/0x710 [ 2653.716319][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.716319][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.716319][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.716319][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.716319][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.716319][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.716319][ T72] [ 2653.718066][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2653.718066][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.718066][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.718066][ T72] ipv6_find_idev+0x102/0x170 [ 2653.718066][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.718066][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.718066][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.718066][ T72] netlink_unicast+0x449/0x710 [ 2653.718066][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.718066][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.718066][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.718066][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.718066][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.718066][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.718066][ T72] [ 2653.720029][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2653.720315][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2653.720315][ T72] netdev_get_by_index+0x5e/0x80 [ 2653.720315][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2653.720315][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2653.720315][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2653.720315][ T72] ipv6_add_addr+0x411/0x2000 [ 2653.720315][ T72] inet6_addr_add+0x30e/0xa40 [ 2653.720315][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2653.720315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.720315][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.720315][ T72] netlink_unicast+0x449/0x710 [ 2653.720315][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.720315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.720315][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.720315][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.720315][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.720315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.720315][ T72] [ 2653.722586][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2653.722586][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2653.722586][ T72] ipv6_find_idev+0x102/0x170 [ 2653.722586][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.722586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.722586][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.722586][ T72] netlink_unicast+0x449/0x710 [ 2653.722586][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.722586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.722586][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.722586][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.722586][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.722586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.722586][ T72] [ 2653.724329][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2653.724329][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2653.724329][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2653.724329][ T72] ipv6_find_idev+0x102/0x170 [ 2653.724329][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2653.724329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2653.724329][ T72] netlink_rcv_skb+0x130/0x360 [ 2653.724329][ T72] netlink_unicast+0x449/0x710 [ 2653.724329][ T72] netlink_sendmsg+0x723/0xbe0 [ 2653.724329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2653.724329][ T72] ___sys_sendmsg+0xee/0x170 [ 2653.724329][ T72] __sys_sendmsg+0xcd/0x170 [ 2653.724329][ T72] do_syscall_64+0xc6/0x1e0 [ 2653.724329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2653.724329][ T72] [ 2663.966838][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2663.967276][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2663.967276][ T72] netdev_get_by_index+0x5e/0x80 [ 2663.967276][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2663.967276][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2663.967276][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2663.967276][ T72] ipv6_add_addr+0x411/0x2000 [ 2663.967276][ T72] inet6_addr_add+0x30e/0xa40 [ 2663.967276][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2663.967276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.967276][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.967276][ T72] netlink_unicast+0x449/0x710 [ 2663.967276][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.967276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.967276][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.967276][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.967276][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.967276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.967276][ T72] [ 2663.969503][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2663.969503][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2663.969503][ T72] ipv6_find_idev+0x102/0x170 [ 2663.969503][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.969503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.969503][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.969503][ T72] netlink_unicast+0x449/0x710 [ 2663.969503][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.969503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.969503][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.969503][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.969503][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.969503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.969503][ T72] [ 2663.971097][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2663.971097][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2663.971097][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2663.971097][ T72] ipv6_find_idev+0x102/0x170 [ 2663.971097][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.971097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.971097][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.971097][ T72] netlink_unicast+0x449/0x710 [ 2663.971097][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.971097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.971097][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.971097][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.971097][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.971097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.971097][ T72] [ 2663.972849][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2663.973134][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2663.973134][ T72] netdev_get_by_index+0x5e/0x80 [ 2663.973134][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2663.973134][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2663.973134][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2663.973134][ T72] ipv6_add_addr+0x411/0x2000 [ 2663.973134][ T72] inet6_addr_add+0x30e/0xa40 [ 2663.973134][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2663.973134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.973134][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.973134][ T72] netlink_unicast+0x449/0x710 [ 2663.973134][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.973134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.973134][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.973134][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.973134][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.973134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.973134][ T72] [ 2663.975159][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2663.975159][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2663.975159][ T72] ipv6_find_idev+0x102/0x170 [ 2663.975159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.975159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.975159][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.975159][ T72] netlink_unicast+0x449/0x710 [ 2663.975159][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.975159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.975159][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.975159][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.975159][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.975159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.975159][ T72] [ 2663.976720][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2663.976720][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2663.976720][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2663.976720][ T72] ipv6_find_idev+0x102/0x170 [ 2663.976720][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.976720][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.976720][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.976720][ T72] netlink_unicast+0x449/0x710 [ 2663.976720][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.976720][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.976720][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.976720][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.976720][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.976720][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.976720][ T72] [ 2663.978436][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2663.978728][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2663.978728][ T72] netdev_get_by_index+0x5e/0x80 [ 2663.978728][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2663.978728][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2663.978728][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2663.978728][ T72] ipv6_add_addr+0x411/0x2000 [ 2663.978728][ T72] inet6_addr_add+0x30e/0xa40 [ 2663.978728][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2663.978728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.978728][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.978728][ T72] netlink_unicast+0x449/0x710 [ 2663.978728][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.978728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.978728][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.978728][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.978728][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.978728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.978728][ T72] [ 2663.980741][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2663.980741][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2663.980741][ T72] ipv6_find_idev+0x102/0x170 [ 2663.980741][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.980741][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.980741][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.980741][ T72] netlink_unicast+0x449/0x710 [ 2663.980741][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.980741][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.980741][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.980741][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.980741][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.980741][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.980741][ T72] [ 2663.982296][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2663.982296][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2663.982296][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2663.982296][ T72] ipv6_find_idev+0x102/0x170 [ 2663.982296][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.982296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.982296][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.982296][ T72] netlink_unicast+0x449/0x710 [ 2663.982296][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.982296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.982296][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.982296][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.982296][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.982296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.982296][ T72] [ 2663.983992][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2663.984261][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2663.984261][ T72] netdev_get_by_index+0x5e/0x80 [ 2663.984261][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2663.984261][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2663.984261][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2663.984261][ T72] ipv6_add_addr+0x411/0x2000 [ 2663.984261][ T72] inet6_addr_add+0x30e/0xa40 [ 2663.984261][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2663.984261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.984261][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.984261][ T72] netlink_unicast+0x449/0x710 [ 2663.984261][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.984261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.984261][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.984261][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.984261][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.984261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.984261][ T72] [ 2663.986304][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2663.986304][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2663.986304][ T72] ipv6_find_idev+0x102/0x170 [ 2663.986304][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.986304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.986304][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.986304][ T72] netlink_unicast+0x449/0x710 [ 2663.986304][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.986304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.986304][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.986304][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.986304][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.986304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.986304][ T72] [ 2663.987863][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2663.987863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2663.987863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2663.987863][ T72] ipv6_find_idev+0x102/0x170 [ 2663.987863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.987863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.987863][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.987863][ T72] netlink_unicast+0x449/0x710 [ 2663.987863][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.987863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.987863][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.987863][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.987863][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.987863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.987863][ T72] [ 2663.990015][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2663.990288][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2663.990288][ T72] netdev_get_by_index+0x5e/0x80 [ 2663.990288][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2663.990288][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2663.990288][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2663.990288][ T72] ipv6_add_addr+0x411/0x2000 [ 2663.990288][ T72] inet6_addr_add+0x30e/0xa40 [ 2663.990288][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2663.990288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.990288][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.990288][ T72] netlink_unicast+0x449/0x710 [ 2663.990288][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.990288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.990288][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.990288][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.990288][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.990288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.990288][ T72] [ 2663.992337][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2663.992337][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2663.992337][ T72] ipv6_find_idev+0x102/0x170 [ 2663.992337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.992337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.992337][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.992337][ T72] netlink_unicast+0x449/0x710 [ 2663.992337][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.992337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.992337][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.992337][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.992337][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.992337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.992337][ T72] [ 2663.993915][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2663.993915][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2663.993915][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2663.993915][ T72] ipv6_find_idev+0x102/0x170 [ 2663.993915][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.993915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.993915][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.993915][ T72] netlink_unicast+0x449/0x710 [ 2663.993915][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.993915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.993915][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.993915][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.993915][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.993915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.993915][ T72] [ 2663.995669][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2663.995987][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2663.995987][ T72] netdev_get_by_index+0x5e/0x80 [ 2663.995987][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2663.995987][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2663.995987][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2663.995987][ T72] ipv6_add_addr+0x411/0x2000 [ 2663.995987][ T72] inet6_addr_add+0x30e/0xa40 [ 2663.995987][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2663.995987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.995987][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.995987][ T72] netlink_unicast+0x449/0x710 [ 2663.995987][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.995987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.995987][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.995987][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.995987][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.995987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.995987][ T72] [ 2663.998095][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2663.998095][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2663.998095][ T72] ipv6_find_idev+0x102/0x170 [ 2663.998095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.998095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.998095][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.998095][ T72] netlink_unicast+0x449/0x710 [ 2663.998095][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.998095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.998095][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.998095][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.998095][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.998095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.998095][ T72] [ 2663.999939][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2663.999939][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2663.999939][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2663.999939][ T72] ipv6_find_idev+0x102/0x170 [ 2663.999939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2663.999939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2663.999939][ T72] netlink_rcv_skb+0x130/0x360 [ 2663.999939][ T72] netlink_unicast+0x449/0x710 [ 2663.999939][ T72] netlink_sendmsg+0x723/0xbe0 [ 2663.999939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2663.999939][ T72] ___sys_sendmsg+0xee/0x170 [ 2663.999939][ T72] __sys_sendmsg+0xcd/0x170 [ 2663.999939][ T72] do_syscall_64+0xc6/0x1e0 [ 2663.999939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2663.999939][ T72] [ 2664.001877][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2664.002146][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2664.002146][ T72] netdev_get_by_index+0x5e/0x80 [ 2664.002146][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2664.002146][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2664.002146][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2664.002146][ T72] ipv6_add_addr+0x411/0x2000 [ 2664.002146][ T72] inet6_addr_add+0x30e/0xa40 [ 2664.002146][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2664.002146][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2664.002146][ T72] netlink_rcv_skb+0x130/0x360 [ 2664.002146][ T72] netlink_unicast+0x449/0x710 [ 2664.002146][ T72] netlink_sendmsg+0x723/0xbe0 [ 2664.002146][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2664.002146][ T72] ___sys_sendmsg+0xee/0x170 [ 2664.002146][ T72] __sys_sendmsg+0xcd/0x170 [ 2664.002146][ T72] do_syscall_64+0xc6/0x1e0 [ 2664.002146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2664.002146][ T72] [ 2664.004451][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2664.004451][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2664.004451][ T72] ipv6_find_idev+0x102/0x170 [ 2664.004451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2664.004451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2664.004451][ T72] netlink_rcv_skb+0x130/0x360 [ 2664.004451][ T72] netlink_unicast+0x449/0x710 [ 2664.004451][ T72] netlink_sendmsg+0x723/0xbe0 [ 2664.004451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2664.004451][ T72] ___sys_sendmsg+0xee/0x170 [ 2664.004451][ T72] __sys_sendmsg+0xcd/0x170 [ 2664.004451][ T72] do_syscall_64+0xc6/0x1e0 [ 2664.004451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2664.004451][ T72] [ 2664.006141][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2664.006141][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2664.006141][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2664.006141][ T72] ipv6_find_idev+0x102/0x170 [ 2664.006141][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2664.006141][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2664.006141][ T72] netlink_rcv_skb+0x130/0x360 [ 2664.006141][ T72] netlink_unicast+0x449/0x710 [ 2664.006141][ T72] netlink_sendmsg+0x723/0xbe0 [ 2664.006141][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2664.006141][ T72] ___sys_sendmsg+0xee/0x170 [ 2664.006141][ T72] __sys_sendmsg+0xcd/0x170 [ 2664.006141][ T72] do_syscall_64+0xc6/0x1e0 [ 2664.006141][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2664.006141][ T72] [ 2664.008019][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2664.008276][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2664.008276][ T72] netdev_get_by_index+0x5e/0x80 [ 2664.008276][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2664.008276][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2664.008276][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2664.008276][ T72] ipv6_add_addr+0x411/0x2000 [ 2664.008276][ T72] inet6_addr_add+0x30e/0xa40 [ 2664.008276][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2664.008276][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2664.008276][ T72] netlink_rcv_skb+0x130/0x360 [ 2664.008276][ T72] netlink_unicast+0x449/0x710 [ 2664.008276][ T72] netlink_sendmsg+0x723/0xbe0 [ 2664.008276][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2664.008276][ T72] ___sys_sendmsg+0xee/0x170 [ 2664.008276][ T72] __sys_sendmsg+0xcd/0x170 [ 2664.008276][ T72] do_syscall_64+0xc6/0x1e0 [ 2664.008276][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2664.008276][ T72] [ 2664.010533][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2664.010533][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2664.010533][ T72] ipv6_find_idev+0x102/0x170 [ 2664.010533][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2664.010533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2664.010533][ T72] netlink_rcv_skb+0x130/0x360 [ 2664.010533][ T72] netlink_unicast+0x449/0x710 [ 2664.010533][ T72] netlink_sendmsg+0x723/0xbe0 [ 2664.010533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2664.010533][ T72] ___sys_sendmsg+0xee/0x170 [ 2664.010533][ T72] __sys_sendmsg+0xcd/0x170 [ 2664.010533][ T72] do_syscall_64+0xc6/0x1e0 [ 2664.010533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2664.010533][ T72] [ 2664.012221][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2664.012221][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2664.012221][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2664.012221][ T72] ipv6_find_idev+0x102/0x170 [ 2664.012221][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2664.012221][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2664.012221][ T72] netlink_rcv_skb+0x130/0x360 [ 2664.012221][ T72] netlink_unicast+0x449/0x710 [ 2664.012221][ T72] netlink_sendmsg+0x723/0xbe0 [ 2664.012221][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2664.012221][ T72] ___sys_sendmsg+0xee/0x170 [ 2664.012221][ T72] __sys_sendmsg+0xcd/0x170 [ 2664.012221][ T72] do_syscall_64+0xc6/0x1e0 [ 2664.012221][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2664.012221][ T72] [ 2674.254857][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2674.255331][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2674.255331][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.255331][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.255331][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.255331][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.255331][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.255331][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.255331][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.255331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.255331][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.255331][ T72] netlink_unicast+0x449/0x710 [ 2674.255331][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.255331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.255331][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.255331][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.255331][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.255331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.255331][ T72] [ 2674.257343][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2674.257343][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.257343][ T72] ipv6_find_idev+0x102/0x170 [ 2674.257343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.257343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.257343][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.257343][ T72] netlink_unicast+0x449/0x710 [ 2674.257343][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.257343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.257343][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.257343][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.257343][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.257343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.257343][ T72] [ 2674.258885][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2674.258885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.258885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.258885][ T72] ipv6_find_idev+0x102/0x170 [ 2674.258885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.258885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.258885][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.258885][ T72] netlink_unicast+0x449/0x710 [ 2674.258885][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.258885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.258885][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.258885][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.258885][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.258885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.258885][ T72] [ 2674.260557][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2674.260843][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2674.260843][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.260843][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.260843][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.260843][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.260843][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.260843][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.260843][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.260843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.260843][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.260843][ T72] netlink_unicast+0x449/0x710 [ 2674.260843][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.260843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.260843][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.260843][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.260843][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.260843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.260843][ T72] [ 2674.262821][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2674.262821][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.262821][ T72] ipv6_find_idev+0x102/0x170 [ 2674.262821][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.262821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.262821][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.262821][ T72] netlink_unicast+0x449/0x710 [ 2674.262821][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.262821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.262821][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.262821][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.262821][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.262821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.262821][ T72] [ 2674.264336][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2674.264336][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.264336][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.264336][ T72] ipv6_find_idev+0x102/0x170 [ 2674.264336][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.264336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.264336][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.264336][ T72] netlink_unicast+0x449/0x710 [ 2674.264336][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.264336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.264336][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.264336][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.264336][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.264336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.264336][ T72] [ 2674.266005][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2674.266268][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2674.266268][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.266268][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.266268][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.266268][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.266268][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.266268][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.266268][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.266268][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.266268][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.266268][ T72] netlink_unicast+0x449/0x710 [ 2674.266268][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.266268][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.266268][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.266268][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.266268][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.266268][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.266268][ T72] [ 2674.268262][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2674.268262][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.268262][ T72] ipv6_find_idev+0x102/0x170 [ 2674.268262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.268262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.268262][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.268262][ T72] netlink_unicast+0x449/0x710 [ 2674.268262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.268262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.268262][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.268262][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.268262][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.268262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.268262][ T72] [ 2674.269793][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2674.269793][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.269793][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.269793][ T72] ipv6_find_idev+0x102/0x170 [ 2674.269793][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.269793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.269793][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.269793][ T72] netlink_unicast+0x449/0x710 [ 2674.269793][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.269793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.269793][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.269793][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.269793][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.269793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.269793][ T72] [ 2674.271447][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2674.271717][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2674.271717][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.271717][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.271717][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.271717][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.271717][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.271717][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.271717][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.271717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.271717][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.271717][ T72] netlink_unicast+0x449/0x710 [ 2674.271717][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.271717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.271717][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.271717][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.271717][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.271717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.271717][ T72] [ 2674.273699][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2674.273699][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.273699][ T72] ipv6_find_idev+0x102/0x170 [ 2674.273699][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.273699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.273699][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.273699][ T72] netlink_unicast+0x449/0x710 [ 2674.273699][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.273699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.273699][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.273699][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.273699][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.273699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.273699][ T72] [ 2674.275225][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2674.275225][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.275225][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.275225][ T72] ipv6_find_idev+0x102/0x170 [ 2674.275225][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.275225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.275225][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.275225][ T72] netlink_unicast+0x449/0x710 [ 2674.275225][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.275225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.275225][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.275225][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.275225][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.275225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.275225][ T72] [ 2674.277284][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2674.277546][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2674.277546][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.277546][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.277546][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.277546][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.277546][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.277546][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.277546][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.277546][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.277546][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.277546][ T72] netlink_unicast+0x449/0x710 [ 2674.277546][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.277546][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.277546][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.277546][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.277546][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.277546][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.277546][ T72] [ 2674.280091][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2674.280091][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.280091][ T72] ipv6_find_idev+0x102/0x170 [ 2674.280091][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.280091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.280091][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.280091][ T72] netlink_unicast+0x449/0x710 [ 2674.280091][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.280091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.280091][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.280091][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.280091][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.280091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.280091][ T72] [ 2674.282025][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2674.282025][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.282025][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.282025][ T72] ipv6_find_idev+0x102/0x170 [ 2674.282025][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.282025][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.282025][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.282025][ T72] netlink_unicast+0x449/0x710 [ 2674.282025][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.282025][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.282025][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.282025][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.282025][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.282025][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.282025][ T72] [ 2674.283759][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2674.284023][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2674.284023][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.284023][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.284023][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.284023][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.284023][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.284023][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.284023][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.284023][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.284023][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.284023][ T72] netlink_unicast+0x449/0x710 [ 2674.284023][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.284023][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.284023][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.284023][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.284023][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.284023][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.284023][ T72] [ 2674.286172][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2674.286172][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.286172][ T72] ipv6_find_idev+0x102/0x170 [ 2674.286172][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.286172][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.286172][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.286172][ T72] netlink_unicast+0x449/0x710 [ 2674.286172][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.286172][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.286172][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.286172][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.286172][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.286172][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.286172][ T72] [ 2674.287921][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2674.287921][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.287921][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.287921][ T72] ipv6_find_idev+0x102/0x170 [ 2674.287921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.287921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.287921][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.287921][ T72] netlink_unicast+0x449/0x710 [ 2674.287921][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.287921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.287921][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.287921][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.287921][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.287921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.287921][ T72] [ 2674.289805][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2674.290070][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2674.290070][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.290070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.290070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.290070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.290070][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.290070][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.290070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.290070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.290070][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.290070][ T72] netlink_unicast+0x449/0x710 [ 2674.290070][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.290070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.290070][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.290070][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.290070][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.290070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.290070][ T72] [ 2674.292280][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2674.292280][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.292280][ T72] ipv6_find_idev+0x102/0x170 [ 2674.292280][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.292280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.292280][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.292280][ T72] netlink_unicast+0x449/0x710 [ 2674.292280][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.292280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.292280][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.292280][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.292280][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.292280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.292280][ T72] [ 2674.293980][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2674.293980][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.293980][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.293980][ T72] ipv6_find_idev+0x102/0x170 [ 2674.293980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.293980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.293980][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.293980][ T72] netlink_unicast+0x449/0x710 [ 2674.293980][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.293980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.293980][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.293980][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.293980][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.293980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.293980][ T72] [ 2674.295858][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2674.296131][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2674.296131][ T72] netdev_get_by_index+0x5e/0x80 [ 2674.296131][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2674.296131][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2674.296131][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2674.296131][ T72] ipv6_add_addr+0x411/0x2000 [ 2674.296131][ T72] inet6_addr_add+0x30e/0xa40 [ 2674.296131][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2674.296131][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.296131][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.296131][ T72] netlink_unicast+0x449/0x710 [ 2674.296131][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.296131][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.296131][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.296131][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.296131][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.296131][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.296131][ T72] [ 2674.298714][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2674.298714][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2674.298714][ T72] ipv6_find_idev+0x102/0x170 [ 2674.298714][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.298714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.298714][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.298714][ T72] netlink_unicast+0x449/0x710 [ 2674.298714][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.298714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.298714][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.298714][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.298714][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.298714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.298714][ T72] [ 2674.300416][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2674.300416][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2674.300416][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2674.300416][ T72] ipv6_find_idev+0x102/0x170 [ 2674.300416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2674.300416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2674.300416][ T72] netlink_rcv_skb+0x130/0x360 [ 2674.300416][ T72] netlink_unicast+0x449/0x710 [ 2674.300416][ T72] netlink_sendmsg+0x723/0xbe0 [ 2674.300416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2674.300416][ T72] ___sys_sendmsg+0xee/0x170 [ 2674.300416][ T72] __sys_sendmsg+0xcd/0x170 [ 2674.300416][ T72] do_syscall_64+0xc6/0x1e0 [ 2674.300416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2674.300416][ T72] [ 2684.542819][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2684.543296][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2684.543296][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.543296][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.543296][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.543296][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.543296][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.543296][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.543296][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.543296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.543296][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.543296][ T72] netlink_unicast+0x449/0x710 [ 2684.543296][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.543296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.543296][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.543296][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.543296][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.543296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.543296][ T72] [ 2684.545295][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2684.545295][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.545295][ T72] ipv6_find_idev+0x102/0x170 [ 2684.545295][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.545295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.545295][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.545295][ T72] netlink_unicast+0x449/0x710 [ 2684.545295][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.545295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.545295][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.545295][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.545295][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.545295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.545295][ T72] [ 2684.546872][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2684.546872][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.546872][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.546872][ T72] ipv6_find_idev+0x102/0x170 [ 2684.546872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.546872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.546872][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.546872][ T72] netlink_unicast+0x449/0x710 [ 2684.546872][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.546872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.546872][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.546872][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.546872][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.546872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.546872][ T72] [ 2684.548565][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2684.548864][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2684.548864][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.548864][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.548864][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.548864][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.548864][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.548864][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.548864][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.548864][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.548864][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.548864][ T72] netlink_unicast+0x449/0x710 [ 2684.548864][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.548864][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.548864][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.548864][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.548864][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.548864][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.548864][ T72] [ 2684.550837][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2684.550837][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.550837][ T72] ipv6_find_idev+0x102/0x170 [ 2684.550837][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.550837][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.550837][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.550837][ T72] netlink_unicast+0x449/0x710 [ 2684.550837][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.550837][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.550837][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.550837][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.550837][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.550837][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.550837][ T72] [ 2684.552367][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2684.552367][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.552367][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.552367][ T72] ipv6_find_idev+0x102/0x170 [ 2684.552367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.552367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.552367][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.552367][ T72] netlink_unicast+0x449/0x710 [ 2684.552367][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.552367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.552367][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.552367][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.552367][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.552367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.552367][ T72] [ 2684.554043][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2684.554311][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2684.554311][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.554311][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.554311][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.554311][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.554311][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.554311][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.554311][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.554311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.554311][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.554311][ T72] netlink_unicast+0x449/0x710 [ 2684.554311][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.554311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.554311][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.554311][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.554311][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.554311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.554311][ T72] [ 2684.556282][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2684.556282][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.556282][ T72] ipv6_find_idev+0x102/0x170 [ 2684.556282][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.556282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.556282][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.556282][ T72] netlink_unicast+0x449/0x710 [ 2684.556282][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.556282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.556282][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.556282][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.556282][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.556282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.556282][ T72] [ 2684.557805][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2684.557805][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.557805][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.557805][ T72] ipv6_find_idev+0x102/0x170 [ 2684.557805][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.557805][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.557805][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.557805][ T72] netlink_unicast+0x449/0x710 [ 2684.557805][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.557805][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.557805][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.557805][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.557805][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.557805][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.557805][ T72] [ 2684.559480][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2684.559755][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2684.559755][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.559755][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.559755][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.559755][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.559755][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.559755][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.559755][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.559755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.559755][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.559755][ T72] netlink_unicast+0x449/0x710 [ 2684.559755][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.559755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.559755][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.559755][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.559755][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.559755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.559755][ T72] [ 2684.561734][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2684.561734][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.561734][ T72] ipv6_find_idev+0x102/0x170 [ 2684.561734][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.561734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.561734][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.561734][ T72] netlink_unicast+0x449/0x710 [ 2684.561734][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.561734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.561734][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.561734][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.561734][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.561734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.561734][ T72] [ 2684.563250][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2684.563250][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.563250][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.563250][ T72] ipv6_find_idev+0x102/0x170 [ 2684.563250][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.563250][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.563250][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.563250][ T72] netlink_unicast+0x449/0x710 [ 2684.563250][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.563250][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.563250][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.563250][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.563250][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.563250][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.563250][ T72] [ 2684.565325][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2684.565591][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2684.565591][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.565591][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.565591][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.565591][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.565591][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.565591][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.565591][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.565591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.565591][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.565591][ T72] netlink_unicast+0x449/0x710 [ 2684.565591][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.565591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.565591][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.565591][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.565591][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.565591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.565591][ T72] [ 2684.567557][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2684.567557][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.567557][ T72] ipv6_find_idev+0x102/0x170 [ 2684.567557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.567557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.567557][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.567557][ T72] netlink_unicast+0x449/0x710 [ 2684.567557][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.567557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.567557][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.567557][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.567557][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.567557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.567557][ T72] [ 2684.569084][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2684.569084][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.569084][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.569084][ T72] ipv6_find_idev+0x102/0x170 [ 2684.569084][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.569084][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.569084][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.569084][ T72] netlink_unicast+0x449/0x710 [ 2684.569084][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.569084][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.569084][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.569084][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.569084][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.569084][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.569084][ T72] [ 2684.570805][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2684.571064][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2684.571064][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.571064][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.571064][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.571064][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.571064][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.571064][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.571064][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.571064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.571064][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.571064][ T72] netlink_unicast+0x449/0x710 [ 2684.571064][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.571064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.571064][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.571064][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.571064][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.571064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.571064][ T72] [ 2684.573232][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2684.573232][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.573232][ T72] ipv6_find_idev+0x102/0x170 [ 2684.573232][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.573232][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.573232][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.573232][ T72] netlink_unicast+0x449/0x710 [ 2684.573232][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.573232][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.573232][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.573232][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.573232][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.573232][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.573232][ T72] [ 2684.575000][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2684.575000][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.575000][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.575000][ T72] ipv6_find_idev+0x102/0x170 [ 2684.575000][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.575000][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.575000][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.575000][ T72] netlink_unicast+0x449/0x710 [ 2684.575000][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.575000][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.575000][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.575000][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.575000][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.575000][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.575000][ T72] [ 2684.576883][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2684.577142][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2684.577142][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.577142][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.577142][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.577142][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.577142][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.577142][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.577142][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.577142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.577142][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.577142][ T72] netlink_unicast+0x449/0x710 [ 2684.577142][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.577142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.577142][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.577142][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.577142][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.577142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.577142][ T72] [ 2684.579378][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2684.579378][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.579378][ T72] ipv6_find_idev+0x102/0x170 [ 2684.579378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.579378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.579378][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.579378][ T72] netlink_unicast+0x449/0x710 [ 2684.579378][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.579378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.579378][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.579378][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.579378][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.579378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.579378][ T72] [ 2684.581078][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2684.581078][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.581078][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.581078][ T72] ipv6_find_idev+0x102/0x170 [ 2684.581078][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.581078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.581078][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.581078][ T72] netlink_unicast+0x449/0x710 [ 2684.581078][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.581078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.581078][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.581078][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.581078][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.581078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.581078][ T72] [ 2684.582965][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2684.583227][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2684.583227][ T72] netdev_get_by_index+0x5e/0x80 [ 2684.583227][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2684.583227][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2684.583227][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2684.583227][ T72] ipv6_add_addr+0x411/0x2000 [ 2684.583227][ T72] inet6_addr_add+0x30e/0xa40 [ 2684.583227][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2684.583227][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.583227][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.583227][ T72] netlink_unicast+0x449/0x710 [ 2684.583227][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.583227][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.583227][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.583227][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.583227][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.583227][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.583227][ T72] [ 2684.585449][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2684.585449][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2684.585449][ T72] ipv6_find_idev+0x102/0x170 [ 2684.585449][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.585449][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.585449][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.585449][ T72] netlink_unicast+0x449/0x710 [ 2684.585449][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.585449][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.585449][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.585449][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.585449][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.585449][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.585449][ T72] [ 2684.587140][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2684.587140][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2684.587140][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2684.587140][ T72] ipv6_find_idev+0x102/0x170 [ 2684.587140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2684.587140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2684.587140][ T72] netlink_rcv_skb+0x130/0x360 [ 2684.587140][ T72] netlink_unicast+0x449/0x710 [ 2684.587140][ T72] netlink_sendmsg+0x723/0xbe0 [ 2684.587140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2684.587140][ T72] ___sys_sendmsg+0xee/0x170 [ 2684.587140][ T72] __sys_sendmsg+0xcd/0x170 [ 2684.587140][ T72] do_syscall_64+0xc6/0x1e0 [ 2684.587140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2684.587140][ T72] [ 2694.710928][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2694.711415][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2694.711415][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.711415][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.711415][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.711415][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.711415][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.711415][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.711415][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.711415][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.711415][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.711415][ T72] netlink_unicast+0x449/0x710 [ 2694.711415][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.711415][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.711415][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.711415][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.711415][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.711415][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.711415][ T72] [ 2694.713872][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2694.713872][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.713872][ T72] ipv6_find_idev+0x102/0x170 [ 2694.713872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.713872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.713872][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.713872][ T72] netlink_unicast+0x449/0x710 [ 2694.713872][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.713872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.713872][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.713872][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.713872][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.713872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.713872][ T72] [ 2694.715755][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2694.715755][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.715755][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.715755][ T72] ipv6_find_idev+0x102/0x170 [ 2694.715755][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.715755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.715755][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.715755][ T72] netlink_unicast+0x449/0x710 [ 2694.715755][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.715755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.715755][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.715755][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.715755][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.715755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.715755][ T72] [ 2694.717813][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2694.718132][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2694.718132][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.718132][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.718132][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.718132][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.718132][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.718132][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.718132][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.718132][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.718132][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.718132][ T72] netlink_unicast+0x449/0x710 [ 2694.718132][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.718132][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.718132][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.718132][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.718132][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.718132][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.718132][ T72] [ 2694.720589][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2694.720589][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.720589][ T72] ipv6_find_idev+0x102/0x170 [ 2694.720589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.720589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.720589][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.720589][ T72] netlink_unicast+0x449/0x710 [ 2694.720589][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.720589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.720589][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.720589][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.720589][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.720589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.720589][ T72] [ 2694.722414][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2694.722414][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.722414][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.722414][ T72] ipv6_find_idev+0x102/0x170 [ 2694.722414][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.722414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.722414][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.722414][ T72] netlink_unicast+0x449/0x710 [ 2694.722414][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.722414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.722414][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.722414][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.722414][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.722414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.722414][ T72] [ 2694.724080][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2694.724347][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2694.724347][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.724347][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.724347][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.724347][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.724347][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.724347][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.724347][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.724347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.724347][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.724347][ T72] netlink_unicast+0x449/0x710 [ 2694.724347][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.724347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.724347][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.724347][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.724347][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.724347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.724347][ T72] [ 2694.726301][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2694.726301][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.726301][ T72] ipv6_find_idev+0x102/0x170 [ 2694.726301][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.726301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.726301][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.726301][ T72] netlink_unicast+0x449/0x710 [ 2694.726301][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.726301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.726301][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.726301][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.726301][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.726301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.726301][ T72] [ 2694.727809][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2694.727809][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.727809][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.727809][ T72] ipv6_find_idev+0x102/0x170 [ 2694.727809][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.727809][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.727809][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.727809][ T72] netlink_unicast+0x449/0x710 [ 2694.727809][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.727809][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.727809][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.727809][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.727809][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.727809][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.727809][ T72] [ 2694.729469][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2694.729730][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2694.729730][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.729730][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.729730][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.729730][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.729730][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.729730][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.729730][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.729730][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.729730][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.729730][ T72] netlink_unicast+0x449/0x710 [ 2694.729730][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.729730][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.729730][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.729730][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.729730][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.729730][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.729730][ T72] [ 2694.731685][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2694.731685][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.731685][ T72] ipv6_find_idev+0x102/0x170 [ 2694.731685][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.731685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.731685][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.731685][ T72] netlink_unicast+0x449/0x710 [ 2694.731685][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.731685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.731685][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.731685][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.731685][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.731685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.731685][ T72] [ 2694.733188][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2694.733188][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.733188][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.733188][ T72] ipv6_find_idev+0x102/0x170 [ 2694.733188][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.733188][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.733188][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.733188][ T72] netlink_unicast+0x449/0x710 [ 2694.733188][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.733188][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.733188][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.733188][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.733188][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.733188][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.733188][ T72] [ 2694.735245][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2694.735506][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2694.735506][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.735506][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.735506][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.735506][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.735506][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.735506][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.735506][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.735506][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.735506][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.735506][ T72] netlink_unicast+0x449/0x710 [ 2694.735506][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.735506][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.735506][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.735506][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.735506][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.735506][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.735506][ T72] [ 2694.737454][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2694.737454][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.737454][ T72] ipv6_find_idev+0x102/0x170 [ 2694.737454][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.737454][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.737454][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.737454][ T72] netlink_unicast+0x449/0x710 [ 2694.737454][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.737454][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.737454][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.737454][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.737454][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.737454][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.737454][ T72] [ 2694.738972][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2694.738972][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.738972][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.738972][ T72] ipv6_find_idev+0x102/0x170 [ 2694.738972][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.738972][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.738972][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.738972][ T72] netlink_unicast+0x449/0x710 [ 2694.738972][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.738972][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.738972][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.738972][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.738972][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.738972][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.738972][ T72] [ 2694.740664][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2694.740985][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2694.740985][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.740985][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.740985][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.740985][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.740985][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.740985][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.740985][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.740985][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.740985][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.740985][ T72] netlink_unicast+0x449/0x710 [ 2694.740985][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.740985][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.740985][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.740985][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.740985][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.740985][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.740985][ T72] [ 2694.743024][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2694.743024][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.743024][ T72] ipv6_find_idev+0x102/0x170 [ 2694.743024][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.743024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.743024][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.743024][ T72] netlink_unicast+0x449/0x710 [ 2694.743024][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.743024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.743024][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.743024][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.743024][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.743024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.743024][ T72] [ 2694.744773][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2694.744773][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.744773][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.744773][ T72] ipv6_find_idev+0x102/0x170 [ 2694.744773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.744773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.744773][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.744773][ T72] netlink_unicast+0x449/0x710 [ 2694.744773][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.744773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.744773][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.744773][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.744773][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.744773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.744773][ T72] [ 2694.746639][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2694.746948][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2694.746948][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.746948][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.746948][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.746948][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.746948][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.746948][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.746948][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.746948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.746948][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.746948][ T72] netlink_unicast+0x449/0x710 [ 2694.746948][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.746948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.746948][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.746948][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.746948][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.746948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.746948][ T72] [ 2694.749091][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2694.749091][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.749091][ T72] ipv6_find_idev+0x102/0x170 [ 2694.749091][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.749091][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.749091][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.749091][ T72] netlink_unicast+0x449/0x710 [ 2694.749091][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.749091][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.749091][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.749091][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.749091][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.749091][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.749091][ T72] [ 2694.750899][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2694.750899][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.750899][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.750899][ T72] ipv6_find_idev+0x102/0x170 [ 2694.750899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.750899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.750899][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.750899][ T72] netlink_unicast+0x449/0x710 [ 2694.750899][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.750899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.750899][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.750899][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.750899][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.750899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.750899][ T72] [ 2694.753174][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2694.753495][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2694.753495][ T72] netdev_get_by_index+0x5e/0x80 [ 2694.753495][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2694.753495][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2694.753495][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2694.753495][ T72] ipv6_add_addr+0x411/0x2000 [ 2694.753495][ T72] inet6_addr_add+0x30e/0xa40 [ 2694.753495][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2694.753495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.753495][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.753495][ T72] netlink_unicast+0x449/0x710 [ 2694.753495][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.753495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.753495][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.753495][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.753495][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.753495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.753495][ T72] [ 2694.756219][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2694.756219][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2694.756219][ T72] ipv6_find_idev+0x102/0x170 [ 2694.756219][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.756219][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.756219][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.756219][ T72] netlink_unicast+0x449/0x710 [ 2694.756219][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.756219][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.756219][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.756219][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.756219][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.756219][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.756219][ T72] [ 2694.758270][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2694.758270][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2694.758270][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2694.758270][ T72] ipv6_find_idev+0x102/0x170 [ 2694.758270][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2694.758270][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2694.758270][ T72] netlink_rcv_skb+0x130/0x360 [ 2694.758270][ T72] netlink_unicast+0x449/0x710 [ 2694.758270][ T72] netlink_sendmsg+0x723/0xbe0 [ 2694.758270][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2694.758270][ T72] ___sys_sendmsg+0xee/0x170 [ 2694.758270][ T72] __sys_sendmsg+0xcd/0x170 [ 2694.758270][ T72] do_syscall_64+0xc6/0x1e0 [ 2694.758270][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2694.758270][ T72] [ 2705.014854][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2705.015326][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2705.015326][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.015326][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.015326][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.015326][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.015326][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.015326][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.015326][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.015326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.015326][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.015326][ T72] netlink_unicast+0x449/0x710 [ 2705.015326][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.015326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.015326][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.015326][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.015326][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.015326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.015326][ T72] [ 2705.017542][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2705.017542][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.017542][ T72] ipv6_find_idev+0x102/0x170 [ 2705.017542][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.017542][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.017542][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.017542][ T72] netlink_unicast+0x449/0x710 [ 2705.017542][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.017542][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.017542][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.017542][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.017542][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.017542][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.017542][ T72] [ 2705.019248][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2705.019248][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.019248][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.019248][ T72] ipv6_find_idev+0x102/0x170 [ 2705.019248][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.019248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.019248][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.019248][ T72] netlink_unicast+0x449/0x710 [ 2705.019248][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.019248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.019248][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.019248][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.019248][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.019248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.019248][ T72] [ 2705.021116][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2705.021381][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2705.021381][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.021381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.021381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.021381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.021381][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.021381][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.021381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.021381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.021381][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.021381][ T72] netlink_unicast+0x449/0x710 [ 2705.021381][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.021381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.021381][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.021381][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.021381][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.021381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.021381][ T72] [ 2705.023373][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2705.023373][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.023373][ T72] ipv6_find_idev+0x102/0x170 [ 2705.023373][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.023373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.023373][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.023373][ T72] netlink_unicast+0x449/0x710 [ 2705.023373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.023373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.023373][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.023373][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.023373][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.023373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.023373][ T72] [ 2705.024901][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2705.024901][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.024901][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.024901][ T72] ipv6_find_idev+0x102/0x170 [ 2705.024901][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.024901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.024901][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.024901][ T72] netlink_unicast+0x449/0x710 [ 2705.024901][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.024901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.024901][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.024901][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.024901][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.024901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.024901][ T72] [ 2705.026608][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2705.026893][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2705.026893][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.026893][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.026893][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.026893][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.026893][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.026893][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.026893][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.026893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.026893][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.026893][ T72] netlink_unicast+0x449/0x710 [ 2705.026893][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.026893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.026893][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.026893][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.026893][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.026893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.026893][ T72] [ 2705.028875][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2705.028875][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.028875][ T72] ipv6_find_idev+0x102/0x170 [ 2705.028875][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.028875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.028875][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.028875][ T72] netlink_unicast+0x449/0x710 [ 2705.028875][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.028875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.028875][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.028875][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.028875][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.028875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.028875][ T72] [ 2705.030413][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2705.030413][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.030413][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.030413][ T72] ipv6_find_idev+0x102/0x170 [ 2705.030413][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.030413][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.030413][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.030413][ T72] netlink_unicast+0x449/0x710 [ 2705.030413][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.030413][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.030413][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.030413][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.030413][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.030413][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.030413][ T72] [ 2705.032108][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2705.032373][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2705.032373][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.032373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.032373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.032373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.032373][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.032373][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.032373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.032373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.032373][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.032373][ T72] netlink_unicast+0x449/0x710 [ 2705.032373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.032373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.032373][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.032373][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.032373][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.032373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.032373][ T72] [ 2705.034347][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2705.034347][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.034347][ T72] ipv6_find_idev+0x102/0x170 [ 2705.034347][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.034347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.034347][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.034347][ T72] netlink_unicast+0x449/0x710 [ 2705.034347][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.034347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.034347][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.034347][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.034347][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.034347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.034347][ T72] [ 2705.035876][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2705.035876][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.035876][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.035876][ T72] ipv6_find_idev+0x102/0x170 [ 2705.035876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.035876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.035876][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.035876][ T72] netlink_unicast+0x449/0x710 [ 2705.035876][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.035876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.035876][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.035876][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.035876][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.035876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.035876][ T72] [ 2705.037956][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2705.038557][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2705.038557][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.038557][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.038557][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.038557][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.038557][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.038557][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.038557][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.038557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.038557][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.038557][ T72] netlink_unicast+0x449/0x710 [ 2705.038557][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.038557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.038557][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.038557][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.038557][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.038557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.038557][ T72] [ 2705.040552][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2705.040552][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.040552][ T72] ipv6_find_idev+0x102/0x170 [ 2705.040552][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.040552][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.040552][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.040552][ T72] netlink_unicast+0x449/0x710 [ 2705.040552][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.040552][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.040552][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.040552][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.040552][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.040552][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.040552][ T72] [ 2705.042082][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2705.042082][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.042082][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.042082][ T72] ipv6_find_idev+0x102/0x170 [ 2705.042082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.042082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.042082][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.042082][ T72] netlink_unicast+0x449/0x710 [ 2705.042082][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.042082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.042082][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.042082][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.042082][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.042082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.042082][ T72] [ 2705.043765][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2705.044034][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2705.044034][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.044034][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.044034][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.044034][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.044034][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.044034][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.044034][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.044034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.044034][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.044034][ T72] netlink_unicast+0x449/0x710 [ 2705.044034][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.044034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.044034][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.044034][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.044034][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.044034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.044034][ T72] [ 2705.046025][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2705.046025][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.046025][ T72] ipv6_find_idev+0x102/0x170 [ 2705.046025][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.046025][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.046025][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.046025][ T72] netlink_unicast+0x449/0x710 [ 2705.046025][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.046025][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.046025][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.046025][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.046025][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.046025][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.046025][ T72] [ 2705.047615][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2705.047615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.047615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.047615][ T72] ipv6_find_idev+0x102/0x170 [ 2705.047615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.047615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.047615][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.047615][ T72] netlink_unicast+0x449/0x710 [ 2705.047615][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.047615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.047615][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.047615][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.047615][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.047615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.047615][ T72] [ 2705.049581][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2705.049898][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2705.049898][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.049898][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.049898][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.049898][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.049898][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.049898][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.049898][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.049898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.049898][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.049898][ T72] netlink_unicast+0x449/0x710 [ 2705.049898][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.049898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.049898][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.049898][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.049898][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.049898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.049898][ T72] [ 2705.052120][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2705.052120][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.052120][ T72] ipv6_find_idev+0x102/0x170 [ 2705.052120][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.052120][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.052120][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.052120][ T72] netlink_unicast+0x449/0x710 [ 2705.052120][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.052120][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.052120][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.052120][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.052120][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.052120][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.052120][ T72] [ 2705.053830][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2705.053830][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.053830][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.053830][ T72] ipv6_find_idev+0x102/0x170 [ 2705.053830][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.053830][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.053830][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.053830][ T72] netlink_unicast+0x449/0x710 [ 2705.053830][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.053830][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.053830][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.053830][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.053830][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.053830][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.053830][ T72] [ 2705.055745][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2705.056068][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2705.056068][ T72] netdev_get_by_index+0x5e/0x80 [ 2705.056068][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2705.056068][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2705.056068][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2705.056068][ T72] ipv6_add_addr+0x411/0x2000 [ 2705.056068][ T72] inet6_addr_add+0x30e/0xa40 [ 2705.056068][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2705.056068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.056068][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.056068][ T72] netlink_unicast+0x449/0x710 [ 2705.056068][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.056068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.056068][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.056068][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.056068][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.056068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.056068][ T72] [ 2705.058226][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2705.058226][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2705.058226][ T72] ipv6_find_idev+0x102/0x170 [ 2705.058226][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.058226][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.058226][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.058226][ T72] netlink_unicast+0x449/0x710 [ 2705.058226][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.058226][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.058226][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.058226][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.058226][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.058226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.058226][ T72] [ 2705.059942][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2705.059942][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2705.059942][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2705.059942][ T72] ipv6_find_idev+0x102/0x170 [ 2705.059942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2705.059942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2705.059942][ T72] netlink_rcv_skb+0x130/0x360 [ 2705.059942][ T72] netlink_unicast+0x449/0x710 [ 2705.059942][ T72] netlink_sendmsg+0x723/0xbe0 [ 2705.059942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2705.059942][ T72] ___sys_sendmsg+0xee/0x170 [ 2705.059942][ T72] __sys_sendmsg+0xcd/0x170 [ 2705.059942][ T72] do_syscall_64+0xc6/0x1e0 [ 2705.059942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2705.059942][ T72] [ 2715.310898][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2715.311296][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2715.311296][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.311296][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.311296][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.311296][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.311296][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.311296][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.311296][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.311296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.311296][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.311296][ T72] netlink_unicast+0x449/0x710 [ 2715.311296][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.311296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.311296][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.311296][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.311296][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.311296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.311296][ T72] [ 2715.313350][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2715.313350][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.313350][ T72] ipv6_find_idev+0x102/0x170 [ 2715.313350][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.313350][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.313350][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.313350][ T72] netlink_unicast+0x449/0x710 [ 2715.313350][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.313350][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.313350][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.313350][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.313350][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.313350][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.313350][ T72] [ 2715.314894][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2715.314894][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.314894][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.314894][ T72] ipv6_find_idev+0x102/0x170 [ 2715.314894][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.314894][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.314894][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.314894][ T72] netlink_unicast+0x449/0x710 [ 2715.314894][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.314894][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.314894][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.314894][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.314894][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.314894][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.314894][ T72] [ 2715.316590][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2715.316876][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2715.316876][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.316876][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.316876][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.316876][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.316876][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.316876][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.316876][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.316876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.316876][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.316876][ T72] netlink_unicast+0x449/0x710 [ 2715.316876][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.316876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.316876][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.316876][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.316876][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.316876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.316876][ T72] [ 2715.318865][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2715.318865][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.318865][ T72] ipv6_find_idev+0x102/0x170 [ 2715.318865][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.318865][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.318865][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.318865][ T72] netlink_unicast+0x449/0x710 [ 2715.318865][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.318865][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.318865][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.318865][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.318865][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.318865][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.318865][ T72] [ 2715.320387][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2715.320387][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.320387][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.320387][ T72] ipv6_find_idev+0x102/0x170 [ 2715.320387][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.320387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.320387][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.320387][ T72] netlink_unicast+0x449/0x710 [ 2715.320387][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.320387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.320387][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.320387][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.320387][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.320387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.320387][ T72] [ 2715.322036][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2715.322294][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2715.322294][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.322294][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.322294][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.322294][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.322294][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.322294][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.322294][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.322294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.322294][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.322294][ T72] netlink_unicast+0x449/0x710 [ 2715.322294][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.322294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.322294][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.322294][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.322294][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.322294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.322294][ T72] [ 2715.324256][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2715.324256][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.324256][ T72] ipv6_find_idev+0x102/0x170 [ 2715.324256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.324256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.324256][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.324256][ T72] netlink_unicast+0x449/0x710 [ 2715.324256][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.324256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.324256][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.324256][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.324256][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.324256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.324256][ T72] [ 2715.325764][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2715.325764][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.325764][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.325764][ T72] ipv6_find_idev+0x102/0x170 [ 2715.325764][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.325764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.325764][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.325764][ T72] netlink_unicast+0x449/0x710 [ 2715.325764][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.325764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.325764][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.325764][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.325764][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.325764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.325764][ T72] [ 2715.327412][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2715.327676][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2715.327676][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.327676][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.327676][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.327676][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.327676][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.327676][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.327676][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.327676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.327676][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.327676][ T72] netlink_unicast+0x449/0x710 [ 2715.327676][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.327676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.327676][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.327676][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.327676][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.327676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.327676][ T72] [ 2715.329637][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2715.329637][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.329637][ T72] ipv6_find_idev+0x102/0x170 [ 2715.329637][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.329637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.329637][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.329637][ T72] netlink_unicast+0x449/0x710 [ 2715.329637][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.329637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.329637][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.329637][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.329637][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.329637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.329637][ T72] [ 2715.331148][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2715.331148][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.331148][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.331148][ T72] ipv6_find_idev+0x102/0x170 [ 2715.331148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.331148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.331148][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.331148][ T72] netlink_unicast+0x449/0x710 [ 2715.331148][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.331148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.331148][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.331148][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.331148][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.331148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.331148][ T72] [ 2715.333200][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2715.333463][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2715.333463][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.333463][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.333463][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.333463][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.333463][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.333463][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.333463][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.333463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.333463][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.333463][ T72] netlink_unicast+0x449/0x710 [ 2715.333463][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.333463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.333463][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.333463][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.333463][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.333463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.333463][ T72] [ 2715.335410][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2715.335410][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.335410][ T72] ipv6_find_idev+0x102/0x170 [ 2715.335410][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.335410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.335410][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.335410][ T72] netlink_unicast+0x449/0x710 [ 2715.335410][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.335410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.335410][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.335410][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.335410][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.335410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.335410][ T72] [ 2715.336917][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2715.336917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.336917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.336917][ T72] ipv6_find_idev+0x102/0x170 [ 2715.336917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.336917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.336917][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.336917][ T72] netlink_unicast+0x449/0x710 [ 2715.336917][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.336917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.336917][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.336917][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.336917][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.336917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.336917][ T72] [ 2715.338632][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2715.338947][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2715.338947][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.338947][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.338947][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.338947][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.338947][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.338947][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.338947][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.338947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.338947][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.338947][ T72] netlink_unicast+0x449/0x710 [ 2715.338947][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.338947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.338947][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.338947][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.338947][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.338947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.338947][ T72] [ 2715.341031][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2715.341031][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.341031][ T72] ipv6_find_idev+0x102/0x170 [ 2715.341031][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.341031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.341031][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.341031][ T72] netlink_unicast+0x449/0x710 [ 2715.341031][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.341031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.341031][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.341031][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.341031][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.341031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.341031][ T72] [ 2715.342719][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2715.342719][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.342719][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.342719][ T72] ipv6_find_idev+0x102/0x170 [ 2715.342719][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.342719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.342719][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.342719][ T72] netlink_unicast+0x449/0x710 [ 2715.342719][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.342719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.342719][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.342719][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.342719][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.342719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.342719][ T72] [ 2715.344617][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2715.344931][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2715.344931][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.344931][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.344931][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.344931][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.344931][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.344931][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.344931][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.344931][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.344931][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.344931][ T72] netlink_unicast+0x449/0x710 [ 2715.344931][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.344931][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.344931][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.344931][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.344931][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.344931][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.344931][ T72] [ 2715.347123][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2715.347123][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.347123][ T72] ipv6_find_idev+0x102/0x170 [ 2715.347123][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.347123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.347123][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.347123][ T72] netlink_unicast+0x449/0x710 [ 2715.347123][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.347123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.347123][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.347123][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.347123][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.347123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.347123][ T72] [ 2715.348834][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2715.348834][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.348834][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.348834][ T72] ipv6_find_idev+0x102/0x170 [ 2715.348834][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.348834][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.348834][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.348834][ T72] netlink_unicast+0x449/0x710 [ 2715.348834][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.348834][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.348834][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.348834][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.348834][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.348834][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.348834][ T72] [ 2715.350792][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2715.351054][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2715.351054][ T72] netdev_get_by_index+0x5e/0x80 [ 2715.351054][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2715.351054][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2715.351054][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2715.351054][ T72] ipv6_add_addr+0x411/0x2000 [ 2715.351054][ T72] inet6_addr_add+0x30e/0xa40 [ 2715.351054][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2715.351054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.351054][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.351054][ T72] netlink_unicast+0x449/0x710 [ 2715.351054][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.351054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.351054][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.351054][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.351054][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.351054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.351054][ T72] [ 2715.353202][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2715.353202][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2715.353202][ T72] ipv6_find_idev+0x102/0x170 [ 2715.353202][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.353202][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.353202][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.353202][ T72] netlink_unicast+0x449/0x710 [ 2715.353202][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.353202][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.353202][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.353202][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.353202][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.353202][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.353202][ T72] [ 2715.354901][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2715.354901][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2715.354901][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2715.354901][ T72] ipv6_find_idev+0x102/0x170 [ 2715.354901][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2715.354901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2715.354901][ T72] netlink_rcv_skb+0x130/0x360 [ 2715.354901][ T72] netlink_unicast+0x449/0x710 [ 2715.354901][ T72] netlink_sendmsg+0x723/0xbe0 [ 2715.354901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2715.354901][ T72] ___sys_sendmsg+0xee/0x170 [ 2715.354901][ T72] __sys_sendmsg+0xcd/0x170 [ 2715.354901][ T72] do_syscall_64+0xc6/0x1e0 [ 2715.354901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2715.354901][ T72] [ 2725.606922][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2725.607345][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2725.607345][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.607345][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.607345][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.607345][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.607345][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.607345][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.607345][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.607345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.607345][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.607345][ T72] netlink_unicast+0x449/0x710 [ 2725.607345][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.607345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.607345][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.607345][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.607345][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.607345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.607345][ T72] [ 2725.609357][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2725.609357][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.609357][ T72] ipv6_find_idev+0x102/0x170 [ 2725.609357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.609357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.609357][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.609357][ T72] netlink_unicast+0x449/0x710 [ 2725.609357][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.609357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.609357][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.609357][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.609357][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.609357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.609357][ T72] [ 2725.610871][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2725.610871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.610871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.610871][ T72] ipv6_find_idev+0x102/0x170 [ 2725.610871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.610871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.610871][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.610871][ T72] netlink_unicast+0x449/0x710 [ 2725.610871][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.610871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.610871][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.610871][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.610871][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.610871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.610871][ T72] [ 2725.612538][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2725.612822][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2725.612822][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.612822][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.612822][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.612822][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.612822][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.612822][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.612822][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.612822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.612822][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.612822][ T72] netlink_unicast+0x449/0x710 [ 2725.612822][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.612822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.612822][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.612822][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.612822][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.612822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.612822][ T72] [ 2725.614776][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2725.614776][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.614776][ T72] ipv6_find_idev+0x102/0x170 [ 2725.614776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.614776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.614776][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.614776][ T72] netlink_unicast+0x449/0x710 [ 2725.614776][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.614776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.614776][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.614776][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.614776][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.614776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.614776][ T72] [ 2725.616283][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2725.616283][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.616283][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.616283][ T72] ipv6_find_idev+0x102/0x170 [ 2725.616283][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.616283][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.616283][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.616283][ T72] netlink_unicast+0x449/0x710 [ 2725.616283][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.616283][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.616283][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.616283][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.616283][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.616283][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.616283][ T72] [ 2725.617931][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2725.618190][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2725.618190][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.618190][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.618190][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.618190][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.618190][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.618190][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.618190][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.618190][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.618190][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.618190][ T72] netlink_unicast+0x449/0x710 [ 2725.618190][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.618190][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.618190][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.618190][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.618190][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.618190][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.618190][ T72] [ 2725.620153][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2725.620153][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.620153][ T72] ipv6_find_idev+0x102/0x170 [ 2725.620153][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.620153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.620153][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.620153][ T72] netlink_unicast+0x449/0x710 [ 2725.620153][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.620153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.620153][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.620153][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.620153][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.620153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.620153][ T72] [ 2725.621701][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2725.621701][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.621701][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.621701][ T72] ipv6_find_idev+0x102/0x170 [ 2725.621701][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.621701][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.621701][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.621701][ T72] netlink_unicast+0x449/0x710 [ 2725.621701][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.621701][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.621701][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.621701][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.621701][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.621701][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.621701][ T72] [ 2725.623401][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2725.623666][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2725.623666][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.623666][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.623666][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.623666][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.623666][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.623666][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.623666][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.623666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.623666][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.623666][ T72] netlink_unicast+0x449/0x710 [ 2725.623666][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.623666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.623666][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.623666][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.623666][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.623666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.623666][ T72] [ 2725.625655][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2725.625655][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.625655][ T72] ipv6_find_idev+0x102/0x170 [ 2725.625655][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.625655][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.625655][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.625655][ T72] netlink_unicast+0x449/0x710 [ 2725.625655][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.625655][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.625655][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.625655][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.625655][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.625655][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.625655][ T72] [ 2725.627200][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2725.627200][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.627200][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.627200][ T72] ipv6_find_idev+0x102/0x170 [ 2725.627200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.627200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.627200][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.627200][ T72] netlink_unicast+0x449/0x710 [ 2725.627200][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.627200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.627200][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.627200][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.627200][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.627200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.627200][ T72] [ 2725.629285][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2725.629547][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2725.629547][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.629547][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.629547][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.629547][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.629547][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.629547][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.629547][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.629547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.629547][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.629547][ T72] netlink_unicast+0x449/0x710 [ 2725.629547][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.629547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.629547][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.629547][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.629547][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.629547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.629547][ T72] [ 2725.631548][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2725.631548][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.631548][ T72] ipv6_find_idev+0x102/0x170 [ 2725.631548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.631548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.631548][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.631548][ T72] netlink_unicast+0x449/0x710 [ 2725.631548][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.631548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.631548][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.631548][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.631548][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.631548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.631548][ T72] [ 2725.633081][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2725.633081][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.633081][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.633081][ T72] ipv6_find_idev+0x102/0x170 [ 2725.633081][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.633081][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.633081][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.633081][ T72] netlink_unicast+0x449/0x710 [ 2725.633081][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.633081][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.633081][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.633081][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.633081][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.633081][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.633081][ T72] [ 2725.634796][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2725.635061][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2725.635061][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.635061][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.635061][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.635061][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.635061][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.635061][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.635061][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.635061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.635061][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.635061][ T72] netlink_unicast+0x449/0x710 [ 2725.635061][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.635061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.635061][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.635061][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.635061][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.635061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.635061][ T72] [ 2725.637145][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2725.637145][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.637145][ T72] ipv6_find_idev+0x102/0x170 [ 2725.637145][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.637145][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.637145][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.637145][ T72] netlink_unicast+0x449/0x710 [ 2725.637145][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.637145][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.637145][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.637145][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.637145][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.637145][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.637145][ T72] [ 2725.638853][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2725.638853][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.638853][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.638853][ T72] ipv6_find_idev+0x102/0x170 [ 2725.638853][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.638853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.638853][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.638853][ T72] netlink_unicast+0x449/0x710 [ 2725.638853][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.638853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.638853][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.638853][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.638853][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.638853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.638853][ T72] [ 2725.640806][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2725.641065][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2725.641065][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.641065][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.641065][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.641065][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.641065][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.641065][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.641065][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.641065][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.641065][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.641065][ T72] netlink_unicast+0x449/0x710 [ 2725.641065][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.641065][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.641065][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.641065][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.641065][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.641065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.641065][ T72] [ 2725.643305][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2725.643305][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.643305][ T72] ipv6_find_idev+0x102/0x170 [ 2725.643305][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.643305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.643305][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.643305][ T72] netlink_unicast+0x449/0x710 [ 2725.643305][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.643305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.643305][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.643305][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.643305][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.643305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.643305][ T72] [ 2725.645021][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2725.645021][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.645021][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.645021][ T72] ipv6_find_idev+0x102/0x170 [ 2725.645021][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.645021][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.645021][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.645021][ T72] netlink_unicast+0x449/0x710 [ 2725.645021][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.645021][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.645021][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.645021][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.645021][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.645021][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.645021][ T72] [ 2725.646922][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2725.647183][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2725.647183][ T72] netdev_get_by_index+0x5e/0x80 [ 2725.647183][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2725.647183][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2725.647183][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2725.647183][ T72] ipv6_add_addr+0x411/0x2000 [ 2725.647183][ T72] inet6_addr_add+0x30e/0xa40 [ 2725.647183][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2725.647183][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.647183][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.647183][ T72] netlink_unicast+0x449/0x710 [ 2725.647183][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.647183][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.647183][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.647183][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.647183][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.647183][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.647183][ T72] [ 2725.649952][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2725.649952][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2725.649952][ T72] ipv6_find_idev+0x102/0x170 [ 2725.649952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.649952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.649952][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.649952][ T72] netlink_unicast+0x449/0x710 [ 2725.649952][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.649952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.649952][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.649952][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.649952][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.649952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.649952][ T72] [ 2725.651674][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2725.651674][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2725.651674][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2725.651674][ T72] ipv6_find_idev+0x102/0x170 [ 2725.651674][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2725.651674][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2725.651674][ T72] netlink_rcv_skb+0x130/0x360 [ 2725.651674][ T72] netlink_unicast+0x449/0x710 [ 2725.651674][ T72] netlink_sendmsg+0x723/0xbe0 [ 2725.651674][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2725.651674][ T72] ___sys_sendmsg+0xee/0x170 [ 2725.651674][ T72] __sys_sendmsg+0xcd/0x170 [ 2725.651674][ T72] do_syscall_64+0xc6/0x1e0 [ 2725.651674][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2725.651674][ T72] [ 2735.902810][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2735.903211][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2735.903211][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.903211][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.903211][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.903211][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.903211][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.903211][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.903211][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.903211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.903211][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.903211][ T72] netlink_unicast+0x449/0x710 [ 2735.903211][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.903211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.903211][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.903211][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.903211][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.903211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.903211][ T72] [ 2735.905242][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2735.905242][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.905242][ T72] ipv6_find_idev+0x102/0x170 [ 2735.905242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.905242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.905242][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.905242][ T72] netlink_unicast+0x449/0x710 [ 2735.905242][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.905242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.905242][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.905242][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.905242][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.905242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.905242][ T72] [ 2735.906764][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2735.906764][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.906764][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.906764][ T72] ipv6_find_idev+0x102/0x170 [ 2735.906764][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.906764][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.906764][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.906764][ T72] netlink_unicast+0x449/0x710 [ 2735.906764][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.906764][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.906764][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.906764][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.906764][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.906764][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.906764][ T72] [ 2735.908460][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2735.908735][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2735.908735][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.908735][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.908735][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.908735][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.908735][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.908735][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.908735][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.908735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.908735][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.908735][ T72] netlink_unicast+0x449/0x710 [ 2735.908735][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.908735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.908735][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.908735][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.908735][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.908735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.908735][ T72] [ 2735.910724][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2735.910724][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.910724][ T72] ipv6_find_idev+0x102/0x170 [ 2735.910724][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.910724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.910724][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.910724][ T72] netlink_unicast+0x449/0x710 [ 2735.910724][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.910724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.910724][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.910724][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.910724][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.910724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.910724][ T72] [ 2735.912282][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2735.912282][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.912282][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.912282][ T72] ipv6_find_idev+0x102/0x170 [ 2735.912282][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.912282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.912282][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.912282][ T72] netlink_unicast+0x449/0x710 [ 2735.912282][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.912282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.912282][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.912282][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.912282][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.912282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.912282][ T72] [ 2735.913964][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2735.914224][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2735.914224][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.914224][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.914224][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.914224][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.914224][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.914224][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.914224][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.914224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.914224][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.914224][ T72] netlink_unicast+0x449/0x710 [ 2735.914224][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.914224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.914224][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.914224][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.914224][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.914224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.914224][ T72] [ 2735.916677][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2735.916677][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.916677][ T72] ipv6_find_idev+0x102/0x170 [ 2735.916677][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.916677][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.916677][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.916677][ T72] netlink_unicast+0x449/0x710 [ 2735.916677][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.916677][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.916677][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.916677][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.916677][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.916677][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.916677][ T72] [ 2735.918241][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2735.918241][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.918241][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.918241][ T72] ipv6_find_idev+0x102/0x170 [ 2735.918241][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.918241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.918241][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.918241][ T72] netlink_unicast+0x449/0x710 [ 2735.918241][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.918241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.918241][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.918241][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.918241][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.918241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.918241][ T72] [ 2735.919953][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2735.920238][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2735.920238][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.920238][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.920238][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.920238][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.920238][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.920238][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.920238][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.920238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.920238][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.920238][ T72] netlink_unicast+0x449/0x710 [ 2735.920238][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.920238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.920238][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.920238][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.920238][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.920238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.920238][ T72] [ 2735.922235][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2735.922235][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.922235][ T72] ipv6_find_idev+0x102/0x170 [ 2735.922235][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.922235][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.922235][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.922235][ T72] netlink_unicast+0x449/0x710 [ 2735.922235][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.922235][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.922235][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.922235][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.922235][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.922235][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.922235][ T72] [ 2735.923765][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2735.923765][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.923765][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.923765][ T72] ipv6_find_idev+0x102/0x170 [ 2735.923765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.923765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.923765][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.923765][ T72] netlink_unicast+0x449/0x710 [ 2735.923765][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.923765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.923765][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.923765][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.923765][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.923765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.923765][ T72] [ 2735.925432][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2735.925709][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2735.925709][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.925709][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.925709][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.925709][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.925709][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.925709][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.925709][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.925709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.925709][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.925709][ T72] netlink_unicast+0x449/0x710 [ 2735.925709][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.925709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.925709][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.925709][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.925709][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.925709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.925709][ T72] [ 2735.927710][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2735.927710][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.927710][ T72] ipv6_find_idev+0x102/0x170 [ 2735.927710][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.927710][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.927710][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.927710][ T72] netlink_unicast+0x449/0x710 [ 2735.927710][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.927710][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.927710][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.927710][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.927710][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.927710][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.927710][ T72] [ 2735.929330][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2735.929330][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.929330][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.929330][ T72] ipv6_find_idev+0x102/0x170 [ 2735.929330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.929330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.929330][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.929330][ T72] netlink_unicast+0x449/0x710 [ 2735.929330][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.929330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.929330][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.929330][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.929330][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.929330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.929330][ T72] [ 2735.931313][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2735.931583][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2735.931583][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.931583][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.931583][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.931583][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.931583][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.931583][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.931583][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.931583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.931583][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.931583][ T72] netlink_unicast+0x449/0x710 [ 2735.931583][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.931583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.931583][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.931583][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.931583][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.931583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.931583][ T72] [ 2735.933847][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2735.933847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.933847][ T72] ipv6_find_idev+0x102/0x170 [ 2735.933847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.933847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.933847][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.933847][ T72] netlink_unicast+0x449/0x710 [ 2735.933847][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.933847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.933847][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.933847][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.933847][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.933847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.933847][ T72] [ 2735.935583][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2735.935583][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.935583][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.935583][ T72] ipv6_find_idev+0x102/0x170 [ 2735.935583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.935583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.935583][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.935583][ T72] netlink_unicast+0x449/0x710 [ 2735.935583][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.935583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.935583][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.935583][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.935583][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.935583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.935583][ T72] [ 2735.937512][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2735.937780][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2735.937780][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.937780][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.937780][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.937780][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.937780][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.937780][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.937780][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.937780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.937780][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.937780][ T72] netlink_unicast+0x449/0x710 [ 2735.937780][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.937780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.937780][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.937780][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.937780][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.937780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.937780][ T72] [ 2735.940026][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2735.940026][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.940026][ T72] ipv6_find_idev+0x102/0x170 [ 2735.940026][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.940026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.940026][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.940026][ T72] netlink_unicast+0x449/0x710 [ 2735.940026][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.940026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.940026][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.940026][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.940026][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.940026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.940026][ T72] [ 2735.941737][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2735.941737][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.941737][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.941737][ T72] ipv6_find_idev+0x102/0x170 [ 2735.941737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.941737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.941737][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.941737][ T72] netlink_unicast+0x449/0x710 [ 2735.941737][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.941737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.941737][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.941737][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.941737][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.941737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.941737][ T72] [ 2735.943687][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2735.944002][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2735.944002][ T72] netdev_get_by_index+0x5e/0x80 [ 2735.944002][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2735.944002][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2735.944002][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2735.944002][ T72] ipv6_add_addr+0x411/0x2000 [ 2735.944002][ T72] inet6_addr_add+0x30e/0xa40 [ 2735.944002][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2735.944002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.944002][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.944002][ T72] netlink_unicast+0x449/0x710 [ 2735.944002][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.944002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.944002][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.944002][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.944002][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.944002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.944002][ T72] [ 2735.946187][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2735.946187][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2735.946187][ T72] ipv6_find_idev+0x102/0x170 [ 2735.946187][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.946187][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.946187][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.946187][ T72] netlink_unicast+0x449/0x710 [ 2735.946187][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.946187][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.946187][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.946187][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.946187][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.946187][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.946187][ T72] [ 2735.947928][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2735.947928][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2735.947928][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2735.947928][ T72] ipv6_find_idev+0x102/0x170 [ 2735.947928][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2735.947928][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2735.947928][ T72] netlink_rcv_skb+0x130/0x360 [ 2735.947928][ T72] netlink_unicast+0x449/0x710 [ 2735.947928][ T72] netlink_sendmsg+0x723/0xbe0 [ 2735.947928][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2735.947928][ T72] ___sys_sendmsg+0xee/0x170 [ 2735.947928][ T72] __sys_sendmsg+0xcd/0x170 [ 2735.947928][ T72] do_syscall_64+0xc6/0x1e0 [ 2735.947928][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2735.947928][ T72] [ 2746.335052][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2746.335524][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2746.335524][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.335524][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.335524][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.335524][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.335524][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.335524][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.335524][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.335524][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.335524][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.335524][ T72] netlink_unicast+0x449/0x710 [ 2746.335524][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.335524][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.335524][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.335524][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.335524][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.335524][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.335524][ T72] [ 2746.337511][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2746.337511][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.337511][ T72] ipv6_find_idev+0x102/0x170 [ 2746.337511][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.337511][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.337511][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.337511][ T72] netlink_unicast+0x449/0x710 [ 2746.337511][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.337511][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.337511][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.337511][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.337511][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.337511][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.337511][ T72] [ 2746.339033][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2746.339033][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.339033][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.339033][ T72] ipv6_find_idev+0x102/0x170 [ 2746.339033][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.339033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.339033][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.339033][ T72] netlink_unicast+0x449/0x710 [ 2746.339033][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.339033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.339033][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.339033][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.339033][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.339033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.339033][ T72] [ 2746.340709][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2746.340987][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2746.340987][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.340987][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.340987][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.340987][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.340987][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.340987][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.340987][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.340987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.340987][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.340987][ T72] netlink_unicast+0x449/0x710 [ 2746.340987][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.340987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.340987][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.340987][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.340987][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.340987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.340987][ T72] [ 2746.342950][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2746.342950][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.342950][ T72] ipv6_find_idev+0x102/0x170 [ 2746.342950][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.342950][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.342950][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.342950][ T72] netlink_unicast+0x449/0x710 [ 2746.342950][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.342950][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.342950][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.342950][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.342950][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.342950][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.342950][ T72] [ 2746.344462][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2746.344462][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.344462][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.344462][ T72] ipv6_find_idev+0x102/0x170 [ 2746.344462][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.344462][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.344462][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.344462][ T72] netlink_unicast+0x449/0x710 [ 2746.344462][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.344462][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.344462][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.344462][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.344462][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.344462][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.344462][ T72] [ 2746.346113][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2746.346373][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2746.346373][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.346373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.346373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.346373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.346373][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.346373][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.346373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.346373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.346373][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.346373][ T72] netlink_unicast+0x449/0x710 [ 2746.346373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.346373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.346373][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.346373][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.346373][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.346373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.346373][ T72] [ 2746.348342][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2746.348342][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.348342][ T72] ipv6_find_idev+0x102/0x170 [ 2746.348342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.348342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.348342][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.348342][ T72] netlink_unicast+0x449/0x710 [ 2746.348342][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.348342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.348342][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.348342][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.348342][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.348342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.348342][ T72] [ 2746.349854][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2746.349854][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.349854][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.349854][ T72] ipv6_find_idev+0x102/0x170 [ 2746.349854][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.349854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.349854][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.349854][ T72] netlink_unicast+0x449/0x710 [ 2746.349854][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.349854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.349854][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.349854][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.349854][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.349854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.349854][ T72] [ 2746.351509][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2746.351771][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2746.351771][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.351771][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.351771][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.351771][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.351771][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.351771][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.351771][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.351771][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.351771][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.351771][ T72] netlink_unicast+0x449/0x710 [ 2746.351771][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.351771][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.351771][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.351771][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.351771][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.351771][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.351771][ T72] [ 2746.353756][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2746.353756][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.353756][ T72] ipv6_find_idev+0x102/0x170 [ 2746.353756][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.353756][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.353756][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.353756][ T72] netlink_unicast+0x449/0x710 [ 2746.353756][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.353756][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.353756][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.353756][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.353756][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.353756][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.353756][ T72] [ 2746.355274][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2746.355274][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.355274][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.355274][ T72] ipv6_find_idev+0x102/0x170 [ 2746.355274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.355274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.355274][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.355274][ T72] netlink_unicast+0x449/0x710 [ 2746.355274][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.355274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.355274][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.355274][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.355274][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.355274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.355274][ T72] [ 2746.357329][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2746.357590][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2746.357590][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.357590][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.357590][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.357590][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.357590][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.357590][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.357590][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.357590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.357590][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.357590][ T72] netlink_unicast+0x449/0x710 [ 2746.357590][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.357590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.357590][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.357590][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.357590][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.357590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.357590][ T72] [ 2746.359545][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2746.359545][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.359545][ T72] ipv6_find_idev+0x102/0x170 [ 2746.359545][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.359545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.359545][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.359545][ T72] netlink_unicast+0x449/0x710 [ 2746.359545][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.359545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.359545][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.359545][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.359545][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.359545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.359545][ T72] [ 2746.361052][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2746.361052][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.361052][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.361052][ T72] ipv6_find_idev+0x102/0x170 [ 2746.361052][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.361052][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.361052][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.361052][ T72] netlink_unicast+0x449/0x710 [ 2746.361052][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.361052][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.361052][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.361052][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.361052][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.361052][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.361052][ T72] [ 2746.362763][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2746.363031][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2746.363031][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.363031][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.363031][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.363031][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.363031][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.363031][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.363031][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.363031][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.363031][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.363031][ T72] netlink_unicast+0x449/0x710 [ 2746.363031][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.363031][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.363031][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.363031][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.363031][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.363031][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.363031][ T72] [ 2746.365115][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2746.365115][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.365115][ T72] ipv6_find_idev+0x102/0x170 [ 2746.365115][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.365115][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.365115][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.365115][ T72] netlink_unicast+0x449/0x710 [ 2746.365115][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.365115][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.365115][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.365115][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.365115][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.365115][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.365115][ T72] [ 2746.366871][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2746.366871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.366871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.366871][ T72] ipv6_find_idev+0x102/0x170 [ 2746.366871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.366871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.366871][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.366871][ T72] netlink_unicast+0x449/0x710 [ 2746.366871][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.366871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.366871][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.366871][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.366871][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.366871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.366871][ T72] [ 2746.368798][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2746.369057][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2746.369057][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.369057][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.369057][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.369057][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.369057][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.369057][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.369057][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.369057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.369057][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.369057][ T72] netlink_unicast+0x449/0x710 [ 2746.369057][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.369057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.369057][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.369057][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.369057][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.369057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.369057][ T72] [ 2746.371189][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2746.371189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.371189][ T72] ipv6_find_idev+0x102/0x170 [ 2746.371189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.371189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.371189][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.371189][ T72] netlink_unicast+0x449/0x710 [ 2746.371189][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.371189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.371189][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.371189][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.371189][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.371189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.371189][ T72] [ 2746.372878][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2746.372878][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.372878][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.372878][ T72] ipv6_find_idev+0x102/0x170 [ 2746.372878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.372878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.372878][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.372878][ T72] netlink_unicast+0x449/0x710 [ 2746.372878][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.372878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.372878][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.372878][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.372878][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.372878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.372878][ T72] [ 2746.374768][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2746.375028][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2746.375028][ T72] netdev_get_by_index+0x5e/0x80 [ 2746.375028][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2746.375028][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2746.375028][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2746.375028][ T72] ipv6_add_addr+0x411/0x2000 [ 2746.375028][ T72] inet6_addr_add+0x30e/0xa40 [ 2746.375028][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2746.375028][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.375028][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.375028][ T72] netlink_unicast+0x449/0x710 [ 2746.375028][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.375028][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.375028][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.375028][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.375028][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.375028][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.375028][ T72] [ 2746.377279][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2746.377279][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2746.377279][ T72] ipv6_find_idev+0x102/0x170 [ 2746.377279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.377279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.377279][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.377279][ T72] netlink_unicast+0x449/0x710 [ 2746.377279][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.377279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.377279][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.377279][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.377279][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.377279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.377279][ T72] [ 2746.378981][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2746.378981][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2746.378981][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2746.378981][ T72] ipv6_find_idev+0x102/0x170 [ 2746.378981][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2746.378981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2746.378981][ T72] netlink_rcv_skb+0x130/0x360 [ 2746.378981][ T72] netlink_unicast+0x449/0x710 [ 2746.378981][ T72] netlink_sendmsg+0x723/0xbe0 [ 2746.378981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2746.378981][ T72] ___sys_sendmsg+0xee/0x170 [ 2746.378981][ T72] __sys_sendmsg+0xcd/0x170 [ 2746.378981][ T72] do_syscall_64+0xc6/0x1e0 [ 2746.378981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2746.378981][ T72] [ 2756.630858][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2756.631275][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2756.631275][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.631275][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.631275][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.631275][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.631275][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.631275][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.631275][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.631275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.631275][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.631275][ T72] netlink_unicast+0x449/0x710 [ 2756.631275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.631275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.631275][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.631275][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.631275][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.631275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.631275][ T72] [ 2756.633384][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2756.633384][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.633384][ T72] ipv6_find_idev+0x102/0x170 [ 2756.633384][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.633384][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.633384][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.633384][ T72] netlink_unicast+0x449/0x710 [ 2756.633384][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.633384][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.633384][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.633384][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.633384][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.633384][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.633384][ T72] [ 2756.634922][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2756.634922][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.634922][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.634922][ T72] ipv6_find_idev+0x102/0x170 [ 2756.634922][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.634922][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.634922][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.634922][ T72] netlink_unicast+0x449/0x710 [ 2756.634922][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.634922][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.634922][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.634922][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.634922][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.634922][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.634922][ T72] [ 2756.636662][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2756.636959][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2756.636959][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.636959][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.636959][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.636959][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.636959][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.636959][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.636959][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.636959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.636959][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.636959][ T72] netlink_unicast+0x449/0x710 [ 2756.636959][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.636959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.636959][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.636959][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.636959][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.636959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.636959][ T72] [ 2756.638946][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2756.638946][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.638946][ T72] ipv6_find_idev+0x102/0x170 [ 2756.638946][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.638946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.638946][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.638946][ T72] netlink_unicast+0x449/0x710 [ 2756.638946][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.638946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.638946][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.638946][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.638946][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.638946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.638946][ T72] [ 2756.640474][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2756.640474][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.640474][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.640474][ T72] ipv6_find_idev+0x102/0x170 [ 2756.640474][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.640474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.640474][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.640474][ T72] netlink_unicast+0x449/0x710 [ 2756.640474][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.640474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.640474][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.640474][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.640474][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.640474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.640474][ T72] [ 2756.642145][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2756.642408][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2756.642408][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.642408][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.642408][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.642408][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.642408][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.642408][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.642408][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.642408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.642408][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.642408][ T72] netlink_unicast+0x449/0x710 [ 2756.642408][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.642408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.642408][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.642408][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.642408][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.642408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.642408][ T72] [ 2756.644388][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2756.644388][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.644388][ T72] ipv6_find_idev+0x102/0x170 [ 2756.644388][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.644388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.644388][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.644388][ T72] netlink_unicast+0x449/0x710 [ 2756.644388][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.644388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.644388][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.644388][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.644388][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.644388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.644388][ T72] [ 2756.645910][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2756.645910][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.645910][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.645910][ T72] ipv6_find_idev+0x102/0x170 [ 2756.645910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.645910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.645910][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.645910][ T72] netlink_unicast+0x449/0x710 [ 2756.645910][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.645910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.645910][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.645910][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.645910][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.645910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.645910][ T72] [ 2756.647578][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2756.648286][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2756.648286][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.648286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.648286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.648286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.648286][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.648286][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.648286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.648286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.648286][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.648286][ T72] netlink_unicast+0x449/0x710 [ 2756.648286][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.648286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.648286][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.648286][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.648286][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.648286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.648286][ T72] [ 2756.650275][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2756.650275][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.650275][ T72] ipv6_find_idev+0x102/0x170 [ 2756.650275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.650275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.650275][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.650275][ T72] netlink_unicast+0x449/0x710 [ 2756.650275][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.650275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.650275][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.650275][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.650275][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.650275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.650275][ T72] [ 2756.651842][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2756.651842][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.651842][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.651842][ T72] ipv6_find_idev+0x102/0x170 [ 2756.651842][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.651842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.651842][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.651842][ T72] netlink_unicast+0x449/0x710 [ 2756.651842][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.651842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.651842][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.651842][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.651842][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.651842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.651842][ T72] [ 2756.653934][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2756.654249][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2756.654249][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.654249][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.654249][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.654249][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.654249][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.654249][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.654249][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.654249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.654249][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.654249][ T72] netlink_unicast+0x449/0x710 [ 2756.654249][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.654249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.654249][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.654249][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.654249][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.654249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.654249][ T72] [ 2756.656228][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2756.656228][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.656228][ T72] ipv6_find_idev+0x102/0x170 [ 2756.656228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.656228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.656228][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.656228][ T72] netlink_unicast+0x449/0x710 [ 2756.656228][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.656228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.656228][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.656228][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.656228][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.656228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.656228][ T72] [ 2756.657749][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2756.657749][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.657749][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.657749][ T72] ipv6_find_idev+0x102/0x170 [ 2756.657749][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.657749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.657749][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.657749][ T72] netlink_unicast+0x449/0x710 [ 2756.657749][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.657749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.657749][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.657749][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.657749][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.657749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.657749][ T72] [ 2756.659476][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2756.659841][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2756.659841][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.659841][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.659841][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.659841][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.659841][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.659841][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.659841][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.659841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.659841][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.659841][ T72] netlink_unicast+0x449/0x710 [ 2756.659841][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.659841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.659841][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.659841][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.659841][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.659841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.659841][ T72] [ 2756.661822][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2756.661822][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.661822][ T72] ipv6_find_idev+0x102/0x170 [ 2756.661822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.661822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.661822][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.661822][ T72] netlink_unicast+0x449/0x710 [ 2756.661822][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.661822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.661822][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.661822][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.661822][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.661822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.661822][ T72] [ 2756.663529][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2756.663529][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.663529][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.663529][ T72] ipv6_find_idev+0x102/0x170 [ 2756.663529][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.663529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.663529][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.663529][ T72] netlink_unicast+0x449/0x710 [ 2756.663529][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.663529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.663529][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.663529][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.663529][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.663529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.663529][ T72] [ 2756.665489][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2756.665808][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2756.665808][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.665808][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.665808][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.665808][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.665808][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.665808][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.665808][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.665808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.665808][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.665808][ T72] netlink_unicast+0x449/0x710 [ 2756.665808][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.665808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.665808][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.665808][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.665808][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.665808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.665808][ T72] [ 2756.667973][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2756.667973][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.667973][ T72] ipv6_find_idev+0x102/0x170 [ 2756.667973][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.667973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.667973][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.667973][ T72] netlink_unicast+0x449/0x710 [ 2756.667973][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.667973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.667973][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.667973][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.667973][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.667973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.667973][ T72] [ 2756.669685][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2756.669685][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.669685][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.669685][ T72] ipv6_find_idev+0x102/0x170 [ 2756.669685][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.669685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.669685][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.669685][ T72] netlink_unicast+0x449/0x710 [ 2756.669685][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.669685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.669685][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.669685][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.669685][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.669685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.669685][ T72] [ 2756.671654][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2756.671975][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2756.671975][ T72] netdev_get_by_index+0x5e/0x80 [ 2756.671975][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2756.671975][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2756.671975][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2756.671975][ T72] ipv6_add_addr+0x411/0x2000 [ 2756.671975][ T72] inet6_addr_add+0x30e/0xa40 [ 2756.671975][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2756.671975][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.671975][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.671975][ T72] netlink_unicast+0x449/0x710 [ 2756.671975][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.671975][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.671975][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.671975][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.671975][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.671975][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.671975][ T72] [ 2756.674161][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2756.674161][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2756.674161][ T72] ipv6_find_idev+0x102/0x170 [ 2756.674161][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.674161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.674161][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.674161][ T72] netlink_unicast+0x449/0x710 [ 2756.674161][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.674161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.674161][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.674161][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.674161][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.674161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.674161][ T72] [ 2756.675947][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2756.675947][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2756.675947][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2756.675947][ T72] ipv6_find_idev+0x102/0x170 [ 2756.675947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2756.675947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2756.675947][ T72] netlink_rcv_skb+0x130/0x360 [ 2756.675947][ T72] netlink_unicast+0x449/0x710 [ 2756.675947][ T72] netlink_sendmsg+0x723/0xbe0 [ 2756.675947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2756.675947][ T72] ___sys_sendmsg+0xee/0x170 [ 2756.675947][ T72] __sys_sendmsg+0xcd/0x170 [ 2756.675947][ T72] do_syscall_64+0xc6/0x1e0 [ 2756.675947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2756.675947][ T72] [ 2766.678803][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2766.679212][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2766.679212][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.679212][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.679212][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.679212][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.679212][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.679212][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.679212][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.679212][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.679212][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.679212][ T72] netlink_unicast+0x449/0x710 [ 2766.679212][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.679212][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.679212][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.679212][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.679212][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.679212][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.679212][ T72] [ 2766.681292][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2766.681292][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.681292][ T72] ipv6_find_idev+0x102/0x170 [ 2766.681292][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.681292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.681292][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.681292][ T72] netlink_unicast+0x449/0x710 [ 2766.681292][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.681292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.681292][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.681292][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.681292][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.681292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.681292][ T72] [ 2766.682830][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2766.682830][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.682830][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.682830][ T72] ipv6_find_idev+0x102/0x170 [ 2766.682830][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.682830][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.682830][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.682830][ T72] netlink_unicast+0x449/0x710 [ 2766.682830][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.682830][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.682830][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.682830][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.682830][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.682830][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.682830][ T72] [ 2766.684509][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2766.684780][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2766.684780][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.684780][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.684780][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.684780][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.684780][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.684780][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.684780][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.684780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.684780][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.684780][ T72] netlink_unicast+0x449/0x710 [ 2766.684780][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.684780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.684780][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.684780][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.684780][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.684780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.684780][ T72] [ 2766.686805][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2766.686805][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.686805][ T72] ipv6_find_idev+0x102/0x170 [ 2766.686805][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.686805][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.686805][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.686805][ T72] netlink_unicast+0x449/0x710 [ 2766.686805][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.686805][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.686805][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.686805][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.686805][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.686805][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.686805][ T72] [ 2766.688377][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2766.688377][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.688377][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.688377][ T72] ipv6_find_idev+0x102/0x170 [ 2766.688377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.688377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.688377][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.688377][ T72] netlink_unicast+0x449/0x710 [ 2766.688377][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.688377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.688377][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.688377][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.688377][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.688377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.688377][ T72] [ 2766.690073][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2766.690364][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2766.690364][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.690364][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.690364][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.690364][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.690364][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.690364][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.690364][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.690364][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.690364][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.690364][ T72] netlink_unicast+0x449/0x710 [ 2766.690364][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.690364][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.690364][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.690364][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.690364][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.690364][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.690364][ T72] [ 2766.692380][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2766.692380][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.692380][ T72] ipv6_find_idev+0x102/0x170 [ 2766.692380][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.692380][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.692380][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.692380][ T72] netlink_unicast+0x449/0x710 [ 2766.692380][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.692380][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.692380][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.692380][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.692380][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.692380][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.692380][ T72] [ 2766.693945][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2766.693945][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.693945][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.693945][ T72] ipv6_find_idev+0x102/0x170 [ 2766.693945][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.693945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.693945][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.693945][ T72] netlink_unicast+0x449/0x710 [ 2766.693945][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.693945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.693945][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.693945][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.693945][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.693945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.693945][ T72] [ 2766.695677][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2766.695958][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2766.695958][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.695958][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.695958][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.695958][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.695958][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.695958][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.695958][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.695958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.695958][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.695958][ T72] netlink_unicast+0x449/0x710 [ 2766.695958][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.695958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.695958][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.695958][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.695958][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.695958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.695958][ T72] [ 2766.697981][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2766.697981][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.697981][ T72] ipv6_find_idev+0x102/0x170 [ 2766.697981][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.697981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.697981][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.697981][ T72] netlink_unicast+0x449/0x710 [ 2766.697981][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.697981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.697981][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.697981][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.697981][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.697981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.697981][ T72] [ 2766.699578][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2766.699578][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.699578][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.699578][ T72] ipv6_find_idev+0x102/0x170 [ 2766.699578][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.699578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.699578][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.699578][ T72] netlink_unicast+0x449/0x710 [ 2766.699578][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.699578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.699578][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.699578][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.699578][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.699578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.699578][ T72] [ 2766.701254][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2766.701527][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2766.701527][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.701527][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.701527][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.701527][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.701527][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.701527][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.701527][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.701527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.701527][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.701527][ T72] netlink_unicast+0x449/0x710 [ 2766.701527][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.701527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.701527][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.701527][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.701527][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.701527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.701527][ T72] [ 2766.703499][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2766.703499][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.703499][ T72] ipv6_find_idev+0x102/0x170 [ 2766.703499][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.703499][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.703499][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.703499][ T72] netlink_unicast+0x449/0x710 [ 2766.703499][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.703499][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.703499][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.703499][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.703499][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.703499][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.703499][ T72] [ 2766.705133][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2766.705133][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.705133][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.705133][ T72] ipv6_find_idev+0x102/0x170 [ 2766.705133][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.705133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.705133][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.705133][ T72] netlink_unicast+0x449/0x710 [ 2766.705133][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.705133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.705133][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.705133][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.705133][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.705133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.705133][ T72] [ 2766.707044][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2766.707329][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2766.707329][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.707329][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.707329][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.707329][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.707329][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.707329][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.707329][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.707329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.707329][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.707329][ T72] netlink_unicast+0x449/0x710 [ 2766.707329][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.707329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.707329][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.707329][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.707329][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.707329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.707329][ T72] [ 2766.709646][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2766.709646][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.709646][ T72] ipv6_find_idev+0x102/0x170 [ 2766.709646][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.709646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.709646][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.709646][ T72] netlink_unicast+0x449/0x710 [ 2766.709646][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.709646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.709646][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.709646][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.709646][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.709646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.709646][ T72] [ 2766.711371][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2766.711371][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.711371][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.711371][ T72] ipv6_find_idev+0x102/0x170 [ 2766.711371][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.711371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.711371][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.711371][ T72] netlink_unicast+0x449/0x710 [ 2766.711371][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.711371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.711371][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.711371][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.711371][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.711371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.711371][ T72] [ 2766.713331][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2766.713604][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2766.713604][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.713604][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.713604][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.713604][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.713604][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.713604][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.713604][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.713604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.713604][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.713604][ T72] netlink_unicast+0x449/0x710 [ 2766.713604][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.713604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.713604][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.713604][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.713604][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.713604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.713604][ T72] [ 2766.715851][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2766.715851][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.715851][ T72] ipv6_find_idev+0x102/0x170 [ 2766.715851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.715851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.715851][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.715851][ T72] netlink_unicast+0x449/0x710 [ 2766.715851][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.715851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.715851][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.715851][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.715851][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.715851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.715851][ T72] [ 2766.717541][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2766.717541][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.717541][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.717541][ T72] ipv6_find_idev+0x102/0x170 [ 2766.717541][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.717541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.717541][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.717541][ T72] netlink_unicast+0x449/0x710 [ 2766.717541][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.717541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.717541][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.717541][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.717541][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.717541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.717541][ T72] [ 2766.719611][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2766.719934][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2766.719934][ T72] netdev_get_by_index+0x5e/0x80 [ 2766.719934][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2766.719934][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2766.719934][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2766.719934][ T72] ipv6_add_addr+0x411/0x2000 [ 2766.719934][ T72] inet6_addr_add+0x30e/0xa40 [ 2766.719934][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2766.719934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.719934][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.719934][ T72] netlink_unicast+0x449/0x710 [ 2766.719934][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.719934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.719934][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.719934][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.719934][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.719934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.719934][ T72] [ 2766.722153][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2766.722153][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2766.722153][ T72] ipv6_find_idev+0x102/0x170 [ 2766.722153][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.722153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.722153][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.722153][ T72] netlink_unicast+0x449/0x710 [ 2766.722153][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.722153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.722153][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.722153][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.722153][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.722153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.722153][ T72] [ 2766.723875][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2766.723875][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2766.723875][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2766.723875][ T72] ipv6_find_idev+0x102/0x170 [ 2766.723875][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2766.723875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2766.723875][ T72] netlink_rcv_skb+0x130/0x360 [ 2766.723875][ T72] netlink_unicast+0x449/0x710 [ 2766.723875][ T72] netlink_sendmsg+0x723/0xbe0 [ 2766.723875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2766.723875][ T72] ___sys_sendmsg+0xee/0x170 [ 2766.723875][ T72] __sys_sendmsg+0xcd/0x170 [ 2766.723875][ T72] do_syscall_64+0xc6/0x1e0 [ 2766.723875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2766.723875][ T72] [ 2776.750839][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2776.751252][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2776.751252][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.751252][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.751252][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.751252][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.751252][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.751252][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.751252][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.751252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.751252][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.751252][ T72] netlink_unicast+0x449/0x710 [ 2776.751252][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.751252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.751252][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.751252][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.751252][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.751252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.751252][ T72] [ 2776.753280][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2776.753280][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.753280][ T72] ipv6_find_idev+0x102/0x170 [ 2776.753280][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.753280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.753280][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.753280][ T72] netlink_unicast+0x449/0x710 [ 2776.753280][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.753280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.753280][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.753280][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.753280][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.753280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.753280][ T72] [ 2776.754808][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2776.754808][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.754808][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.754808][ T72] ipv6_find_idev+0x102/0x170 [ 2776.754808][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.754808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.754808][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.754808][ T72] netlink_unicast+0x449/0x710 [ 2776.754808][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.754808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.754808][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.754808][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.754808][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.754808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.754808][ T72] [ 2776.756494][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2776.756768][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2776.756768][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.756768][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.756768][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.756768][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.756768][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.756768][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.756768][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.756768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.756768][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.756768][ T72] netlink_unicast+0x449/0x710 [ 2776.756768][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.756768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.756768][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.756768][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.756768][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.756768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.756768][ T72] [ 2776.758742][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2776.758742][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.758742][ T72] ipv6_find_idev+0x102/0x170 [ 2776.758742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.758742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.758742][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.758742][ T72] netlink_unicast+0x449/0x710 [ 2776.758742][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.758742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.758742][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.758742][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.758742][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.758742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.758742][ T72] [ 2776.760302][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2776.760302][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.760302][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.760302][ T72] ipv6_find_idev+0x102/0x170 [ 2776.760302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.760302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.760302][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.760302][ T72] netlink_unicast+0x449/0x710 [ 2776.760302][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.760302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.760302][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.760302][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.760302][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.760302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.760302][ T72] [ 2776.762527][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2776.762808][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2776.762808][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.762808][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.762808][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.762808][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.762808][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.762808][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.762808][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.762808][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.762808][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.762808][ T72] netlink_unicast+0x449/0x710 [ 2776.762808][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.762808][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.762808][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.762808][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.762808][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.762808][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.762808][ T72] [ 2776.764829][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2776.764829][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.764829][ T72] ipv6_find_idev+0x102/0x170 [ 2776.764829][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.764829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.764829][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.764829][ T72] netlink_unicast+0x449/0x710 [ 2776.764829][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.764829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.764829][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.764829][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.764829][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.764829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.764829][ T72] [ 2776.766372][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2776.766372][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.766372][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.766372][ T72] ipv6_find_idev+0x102/0x170 [ 2776.766372][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.766372][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.766372][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.766372][ T72] netlink_unicast+0x449/0x710 [ 2776.766372][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.766372][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.766372][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.766372][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.766372][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.766372][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.766372][ T72] [ 2776.768066][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2776.768340][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2776.768340][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.768340][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.768340][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.768340][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.768340][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.768340][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.768340][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.768340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.768340][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.768340][ T72] netlink_unicast+0x449/0x710 [ 2776.768340][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.768340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.768340][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.768340][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.768340][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.768340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.768340][ T72] [ 2776.770337][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2776.770337][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.770337][ T72] ipv6_find_idev+0x102/0x170 [ 2776.770337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.770337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.770337][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.770337][ T72] netlink_unicast+0x449/0x710 [ 2776.770337][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.770337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.770337][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.770337][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.770337][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.770337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.770337][ T72] [ 2776.772244][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2776.772244][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.772244][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.772244][ T72] ipv6_find_idev+0x102/0x170 [ 2776.772244][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.772244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.772244][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.772244][ T72] netlink_unicast+0x449/0x710 [ 2776.772244][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.772244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.772244][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.772244][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.772244][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.772244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.772244][ T72] [ 2776.774315][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2776.774577][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2776.774577][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.774577][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.774577][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.774577][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.774577][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.774577][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.774577][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.774577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.774577][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.774577][ T72] netlink_unicast+0x449/0x710 [ 2776.774577][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.774577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.774577][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.774577][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.774577][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.774577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.774577][ T72] [ 2776.776541][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2776.776541][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.776541][ T72] ipv6_find_idev+0x102/0x170 [ 2776.776541][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.776541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.776541][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.776541][ T72] netlink_unicast+0x449/0x710 [ 2776.776541][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.776541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.776541][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.776541][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.776541][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.776541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.776541][ T72] [ 2776.778073][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2776.778073][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.778073][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.778073][ T72] ipv6_find_idev+0x102/0x170 [ 2776.778073][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.778073][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.778073][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.778073][ T72] netlink_unicast+0x449/0x710 [ 2776.778073][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.778073][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.778073][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.778073][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.778073][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.778073][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.778073][ T72] [ 2776.779796][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2776.780057][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2776.780057][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.780057][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.780057][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.780057][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.780057][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.780057][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.780057][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.780057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.780057][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.780057][ T72] netlink_unicast+0x449/0x710 [ 2776.780057][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.780057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.780057][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.780057][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.780057][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.780057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.780057][ T72] [ 2776.782155][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2776.782155][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.782155][ T72] ipv6_find_idev+0x102/0x170 [ 2776.782155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.782155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.782155][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.782155][ T72] netlink_unicast+0x449/0x710 [ 2776.782155][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.782155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.782155][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.782155][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.782155][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.782155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.782155][ T72] [ 2776.783853][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2776.783853][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.783853][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.783853][ T72] ipv6_find_idev+0x102/0x170 [ 2776.783853][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.783853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.783853][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.783853][ T72] netlink_unicast+0x449/0x710 [ 2776.783853][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.783853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.783853][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.783853][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.783853][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.783853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.783853][ T72] [ 2776.785796][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2776.786064][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2776.786064][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.786064][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.786064][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.786064][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.786064][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.786064][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.786064][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.786064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.786064][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.786064][ T72] netlink_unicast+0x449/0x710 [ 2776.786064][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.786064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.786064][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.786064][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.786064][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.786064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.786064][ T72] [ 2776.788294][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2776.788294][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.788294][ T72] ipv6_find_idev+0x102/0x170 [ 2776.788294][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.788294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.788294][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.788294][ T72] netlink_unicast+0x449/0x710 [ 2776.788294][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.788294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.788294][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.788294][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.788294][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.788294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.788294][ T72] [ 2776.789992][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2776.789992][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.789992][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.789992][ T72] ipv6_find_idev+0x102/0x170 [ 2776.789992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.789992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.789992][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.789992][ T72] netlink_unicast+0x449/0x710 [ 2776.789992][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.789992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.789992][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.789992][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.789992][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.789992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.789992][ T72] [ 2776.791874][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2776.792138][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2776.792138][ T72] netdev_get_by_index+0x5e/0x80 [ 2776.792138][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2776.792138][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2776.792138][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2776.792138][ T72] ipv6_add_addr+0x411/0x2000 [ 2776.792138][ T72] inet6_addr_add+0x30e/0xa40 [ 2776.792138][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2776.792138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.792138][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.792138][ T72] netlink_unicast+0x449/0x710 [ 2776.792138][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.792138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.792138][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.792138][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.792138][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.792138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.792138][ T72] [ 2776.794408][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2776.794408][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2776.794408][ T72] ipv6_find_idev+0x102/0x170 [ 2776.794408][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.794408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.794408][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.794408][ T72] netlink_unicast+0x449/0x710 [ 2776.794408][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.794408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.794408][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.794408][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.794408][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.794408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.794408][ T72] [ 2776.796098][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2776.796098][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2776.796098][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2776.796098][ T72] ipv6_find_idev+0x102/0x170 [ 2776.796098][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2776.796098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2776.796098][ T72] netlink_rcv_skb+0x130/0x360 [ 2776.796098][ T72] netlink_unicast+0x449/0x710 [ 2776.796098][ T72] netlink_sendmsg+0x723/0xbe0 [ 2776.796098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2776.796098][ T72] ___sys_sendmsg+0xee/0x170 [ 2776.796098][ T72] __sys_sendmsg+0xcd/0x170 [ 2776.796098][ T72] do_syscall_64+0xc6/0x1e0 [ 2776.796098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2776.796098][ T72] [ 2786.806898][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2786.807553][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2786.807553][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.807553][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.807553][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.807553][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.807553][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.807553][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.807553][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.807553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.807553][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.807553][ T72] netlink_unicast+0x449/0x710 [ 2786.807553][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.807553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.807553][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.807553][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.807553][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.807553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.807553][ T72] [ 2786.810700][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2786.810700][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.810700][ T72] ipv6_find_idev+0x102/0x170 [ 2786.810700][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.810700][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.810700][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.810700][ T72] netlink_unicast+0x449/0x710 [ 2786.810700][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.810700][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.810700][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.810700][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.810700][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.810700][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.810700][ T72] [ 2786.813102][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2786.813102][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.813102][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.813102][ T72] ipv6_find_idev+0x102/0x170 [ 2786.813102][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.813102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.813102][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.813102][ T72] netlink_unicast+0x449/0x710 [ 2786.813102][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.813102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.813102][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.813102][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.813102][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.813102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.813102][ T72] [ 2786.815773][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2786.816188][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2786.816188][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.816188][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.816188][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.816188][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.816188][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.816188][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.816188][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.816188][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.816188][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.816188][ T72] netlink_unicast+0x449/0x710 [ 2786.816188][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.816188][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.816188][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.816188][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.816188][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.816188][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.816188][ T72] [ 2786.819311][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2786.819311][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.819311][ T72] ipv6_find_idev+0x102/0x170 [ 2786.819311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.819311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.819311][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.819311][ T72] netlink_unicast+0x449/0x710 [ 2786.819311][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.819311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.819311][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.819311][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.819311][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.819311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.819311][ T72] [ 2786.821719][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2786.821719][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.821719][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.821719][ T72] ipv6_find_idev+0x102/0x170 [ 2786.821719][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.821719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.821719][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.821719][ T72] netlink_unicast+0x449/0x710 [ 2786.821719][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.821719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.821719][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.821719][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.821719][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.821719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.821719][ T72] [ 2786.824333][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2786.824753][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2786.824753][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.824753][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.824753][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.824753][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.824753][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.824753][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.824753][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.824753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.824753][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.824753][ T72] netlink_unicast+0x449/0x710 [ 2786.824753][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.824753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.824753][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.824753][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.824753][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.824753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.824753][ T72] [ 2786.827929][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2786.827929][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.827929][ T72] ipv6_find_idev+0x102/0x170 [ 2786.827929][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.827929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.827929][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.827929][ T72] netlink_unicast+0x449/0x710 [ 2786.827929][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.827929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.827929][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.827929][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.827929][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.827929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.827929][ T72] [ 2786.830381][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2786.830381][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.830381][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.830381][ T72] ipv6_find_idev+0x102/0x170 [ 2786.830381][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.830381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.830381][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.830381][ T72] netlink_unicast+0x449/0x710 [ 2786.830381][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.830381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.830381][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.830381][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.830381][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.830381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.830381][ T72] [ 2786.833034][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2786.833466][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2786.833466][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.833466][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.833466][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.833466][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.833466][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.833466][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.833466][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.833466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.833466][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.833466][ T72] netlink_unicast+0x449/0x710 [ 2786.833466][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.833466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.833466][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.833466][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.833466][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.833466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.833466][ T72] [ 2786.836637][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2786.836637][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.836637][ T72] ipv6_find_idev+0x102/0x170 [ 2786.836637][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.836637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.836637][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.836637][ T72] netlink_unicast+0x449/0x710 [ 2786.836637][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.836637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.836637][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.836637][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.836637][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.836637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.836637][ T72] [ 2786.839089][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2786.839089][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.839089][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.839089][ T72] ipv6_find_idev+0x102/0x170 [ 2786.839089][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.839089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.839089][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.839089][ T72] netlink_unicast+0x449/0x710 [ 2786.839089][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.839089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.839089][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.839089][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.839089][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.839089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.839089][ T72] [ 2786.841766][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2786.842176][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2786.842176][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.842176][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.842176][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.842176][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.842176][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.842176][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.842176][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.842176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.842176][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.842176][ T72] netlink_unicast+0x449/0x710 [ 2786.842176][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.842176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.842176][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.842176][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.842176][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.842176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.842176][ T72] [ 2786.845357][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2786.845357][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.845357][ T72] ipv6_find_idev+0x102/0x170 [ 2786.845357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.845357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.845357][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.845357][ T72] netlink_unicast+0x449/0x710 [ 2786.845357][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.845357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.845357][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.845357][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.845357][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.845357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.845357][ T72] [ 2786.847881][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2786.847881][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.847881][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.847881][ T72] ipv6_find_idev+0x102/0x170 [ 2786.847881][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.847881][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.847881][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.847881][ T72] netlink_unicast+0x449/0x710 [ 2786.847881][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.847881][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.847881][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.847881][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.847881][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.847881][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.847881][ T72] [ 2786.851139][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2786.851563][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2786.851563][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.851563][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.851563][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.851563][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.851563][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.851563][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.851563][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.851563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.851563][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.851563][ T72] netlink_unicast+0x449/0x710 [ 2786.851563][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.851563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.851563][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.851563][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.851563][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.851563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.851563][ T72] [ 2786.855049][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2786.855049][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.855049][ T72] ipv6_find_idev+0x102/0x170 [ 2786.855049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.855049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.855049][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.855049][ T72] netlink_unicast+0x449/0x710 [ 2786.855049][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.855049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.855049][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.855049][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.855049][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.855049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.855049][ T72] [ 2786.857811][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2786.857811][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.857811][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.857811][ T72] ipv6_find_idev+0x102/0x170 [ 2786.857811][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.857811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.857811][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.857811][ T72] netlink_unicast+0x449/0x710 [ 2786.857811][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.857811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.857811][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.857811][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.857811][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.857811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.857811][ T72] [ 2786.860889][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2786.861314][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2786.861314][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.861314][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.861314][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.861314][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.861314][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.861314][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.861314][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.861314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.861314][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.861314][ T72] netlink_unicast+0x449/0x710 [ 2786.861314][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.861314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.861314][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.861314][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.861314][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.861314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.861314][ T72] [ 2786.864888][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2786.864888][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.864888][ T72] ipv6_find_idev+0x102/0x170 [ 2786.864888][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.864888][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.864888][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.864888][ T72] netlink_unicast+0x449/0x710 [ 2786.864888][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.864888][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.864888][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.864888][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.864888][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.864888][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.864888][ T72] [ 2786.867741][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2786.867741][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.867741][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.867741][ T72] ipv6_find_idev+0x102/0x170 [ 2786.867741][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.867741][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.867741][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.867741][ T72] netlink_unicast+0x449/0x710 [ 2786.867741][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.867741][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.867741][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.867741][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.867741][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.867741][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.867741][ T72] [ 2786.870794][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2786.871207][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2786.871207][ T72] netdev_get_by_index+0x5e/0x80 [ 2786.871207][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2786.871207][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2786.871207][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2786.871207][ T72] ipv6_add_addr+0x411/0x2000 [ 2786.871207][ T72] inet6_addr_add+0x30e/0xa40 [ 2786.871207][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2786.871207][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.871207][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.871207][ T72] netlink_unicast+0x449/0x710 [ 2786.871207][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.871207][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.871207][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.871207][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.871207][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.871207][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.871207][ T72] [ 2786.874804][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2786.874804][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2786.874804][ T72] ipv6_find_idev+0x102/0x170 [ 2786.874804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.874804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.874804][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.874804][ T72] netlink_unicast+0x449/0x710 [ 2786.874804][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.874804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.874804][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.874804][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.874804][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.874804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.874804][ T72] [ 2786.877565][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2786.877565][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2786.877565][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2786.877565][ T72] ipv6_find_idev+0x102/0x170 [ 2786.877565][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2786.877565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2786.877565][ T72] netlink_rcv_skb+0x130/0x360 [ 2786.877565][ T72] netlink_unicast+0x449/0x710 [ 2786.877565][ T72] netlink_sendmsg+0x723/0xbe0 [ 2786.877565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2786.877565][ T72] ___sys_sendmsg+0xee/0x170 [ 2786.877565][ T72] __sys_sendmsg+0xcd/0x170 [ 2786.877565][ T72] do_syscall_64+0xc6/0x1e0 [ 2786.877565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2786.877565][ T72] [ 2797.126882][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2797.127357][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2797.127357][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.127357][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.127357][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.127357][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.127357][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.127357][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.127357][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.127357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.127357][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.127357][ T72] netlink_unicast+0x449/0x710 [ 2797.127357][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.127357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.127357][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.127357][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.127357][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.127357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.127357][ T72] [ 2797.129349][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2797.129349][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.129349][ T72] ipv6_find_idev+0x102/0x170 [ 2797.129349][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.129349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.129349][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.129349][ T72] netlink_unicast+0x449/0x710 [ 2797.129349][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.129349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.129349][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.129349][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.129349][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.129349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.129349][ T72] [ 2797.130863][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2797.130863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.130863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.130863][ T72] ipv6_find_idev+0x102/0x170 [ 2797.130863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.130863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.130863][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.130863][ T72] netlink_unicast+0x449/0x710 [ 2797.130863][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.130863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.130863][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.130863][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.130863][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.130863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.130863][ T72] [ 2797.132530][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2797.132809][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2797.132809][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.132809][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.132809][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.132809][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.132809][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.132809][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.132809][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.132809][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.132809][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.132809][ T72] netlink_unicast+0x449/0x710 [ 2797.132809][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.132809][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.132809][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.132809][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.132809][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.132809][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.132809][ T72] [ 2797.134779][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2797.134779][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.134779][ T72] ipv6_find_idev+0x102/0x170 [ 2797.134779][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.134779][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.134779][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.134779][ T72] netlink_unicast+0x449/0x710 [ 2797.134779][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.134779][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.134779][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.134779][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.134779][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.134779][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.134779][ T72] [ 2797.136291][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2797.136291][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.136291][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.136291][ T72] ipv6_find_idev+0x102/0x170 [ 2797.136291][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.136291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.136291][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.136291][ T72] netlink_unicast+0x449/0x710 [ 2797.136291][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.136291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.136291][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.136291][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.136291][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.136291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.136291][ T72] [ 2797.137945][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2797.138207][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2797.138207][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.138207][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.138207][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.138207][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.138207][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.138207][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.138207][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.138207][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.138207][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.138207][ T72] netlink_unicast+0x449/0x710 [ 2797.138207][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.138207][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.138207][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.138207][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.138207][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.138207][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.138207][ T72] [ 2797.140163][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2797.140163][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.140163][ T72] ipv6_find_idev+0x102/0x170 [ 2797.140163][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.140163][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.140163][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.140163][ T72] netlink_unicast+0x449/0x710 [ 2797.140163][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.140163][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.140163][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.140163][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.140163][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.140163][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.140163][ T72] [ 2797.141672][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2797.141672][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.141672][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.141672][ T72] ipv6_find_idev+0x102/0x170 [ 2797.141672][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.141672][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.141672][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.141672][ T72] netlink_unicast+0x449/0x710 [ 2797.141672][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.141672][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.141672][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.141672][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.141672][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.141672][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.141672][ T72] [ 2797.143318][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2797.143577][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2797.143577][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.143577][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.143577][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.143577][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.143577][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.143577][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.143577][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.143577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.143577][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.143577][ T72] netlink_unicast+0x449/0x710 [ 2797.143577][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.143577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.143577][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.143577][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.143577][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.143577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.143577][ T72] [ 2797.145534][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2797.145534][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.145534][ T72] ipv6_find_idev+0x102/0x170 [ 2797.145534][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.145534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.145534][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.145534][ T72] netlink_unicast+0x449/0x710 [ 2797.145534][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.145534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.145534][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.145534][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.145534][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.145534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.145534][ T72] [ 2797.147042][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2797.147042][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.147042][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.147042][ T72] ipv6_find_idev+0x102/0x170 [ 2797.147042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.147042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.147042][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.147042][ T72] netlink_unicast+0x449/0x710 [ 2797.147042][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.147042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.147042][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.147042][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.147042][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.147042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.147042][ T72] [ 2797.149107][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2797.149365][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2797.149365][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.149365][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.149365][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.149365][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.149365][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.149365][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.149365][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.149365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.149365][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.149365][ T72] netlink_unicast+0x449/0x710 [ 2797.149365][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.149365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.149365][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.149365][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.149365][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.149365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.149365][ T72] [ 2797.151328][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2797.151328][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.151328][ T72] ipv6_find_idev+0x102/0x170 [ 2797.151328][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.151328][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.151328][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.151328][ T72] netlink_unicast+0x449/0x710 [ 2797.151328][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.151328][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.151328][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.151328][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.151328][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.151328][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.151328][ T72] [ 2797.152829][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2797.152829][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.152829][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.152829][ T72] ipv6_find_idev+0x102/0x170 [ 2797.152829][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.152829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.152829][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.152829][ T72] netlink_unicast+0x449/0x710 [ 2797.152829][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.152829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.152829][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.152829][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.152829][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.152829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.152829][ T72] [ 2797.154510][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2797.154779][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2797.154779][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.154779][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.154779][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.154779][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.154779][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.154779][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.154779][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.154779][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.154779][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.154779][ T72] netlink_unicast+0x449/0x710 [ 2797.154779][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.154779][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.154779][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.154779][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.154779][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.154779][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.154779][ T72] [ 2797.156791][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2797.156791][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.156791][ T72] ipv6_find_idev+0x102/0x170 [ 2797.156791][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.156791][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.156791][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.156791][ T72] netlink_unicast+0x449/0x710 [ 2797.156791][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.156791][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.156791][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.156791][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.156791][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.156791][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.156791][ T72] [ 2797.158546][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2797.158546][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.158546][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.158546][ T72] ipv6_find_idev+0x102/0x170 [ 2797.158546][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.158546][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.158546][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.158546][ T72] netlink_unicast+0x449/0x710 [ 2797.158546][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.158546][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.158546][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.158546][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.158546][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.158546][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.158546][ T72] [ 2797.160454][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2797.160719][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2797.160719][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.160719][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.160719][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.160719][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.160719][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.160719][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.160719][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.160719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.160719][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.160719][ T72] netlink_unicast+0x449/0x710 [ 2797.160719][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.160719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.160719][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.160719][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.160719][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.160719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.160719][ T72] [ 2797.162909][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2797.162909][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.162909][ T72] ipv6_find_idev+0x102/0x170 [ 2797.162909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.162909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.162909][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.162909][ T72] netlink_unicast+0x449/0x710 [ 2797.162909][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.162909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.162909][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.162909][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.162909][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.162909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.162909][ T72] [ 2797.164590][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2797.164590][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.164590][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.164590][ T72] ipv6_find_idev+0x102/0x170 [ 2797.164590][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.164590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.164590][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.164590][ T72] netlink_unicast+0x449/0x710 [ 2797.164590][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.164590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.164590][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.164590][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.164590][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.164590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.164590][ T72] [ 2797.166454][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2797.166713][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2797.166713][ T72] netdev_get_by_index+0x5e/0x80 [ 2797.166713][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2797.166713][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2797.166713][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2797.166713][ T72] ipv6_add_addr+0x411/0x2000 [ 2797.166713][ T72] inet6_addr_add+0x30e/0xa40 [ 2797.166713][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2797.166713][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.166713][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.166713][ T72] netlink_unicast+0x449/0x710 [ 2797.166713][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.166713][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.166713][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.166713][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.166713][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.166713][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.166713][ T72] [ 2797.168971][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2797.168971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2797.168971][ T72] ipv6_find_idev+0x102/0x170 [ 2797.168971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.168971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.168971][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.168971][ T72] netlink_unicast+0x449/0x710 [ 2797.168971][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.168971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.168971][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.168971][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.168971][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.168971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.168971][ T72] [ 2797.170680][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2797.170680][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2797.170680][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2797.170680][ T72] ipv6_find_idev+0x102/0x170 [ 2797.170680][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2797.170680][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2797.170680][ T72] netlink_rcv_skb+0x130/0x360 [ 2797.170680][ T72] netlink_unicast+0x449/0x710 [ 2797.170680][ T72] netlink_sendmsg+0x723/0xbe0 [ 2797.170680][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2797.170680][ T72] ___sys_sendmsg+0xee/0x170 [ 2797.170680][ T72] __sys_sendmsg+0xcd/0x170 [ 2797.170680][ T72] do_syscall_64+0xc6/0x1e0 [ 2797.170680][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2797.170680][ T72] [ 2807.638991][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2807.639400][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2807.639400][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.639400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.639400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.639400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.639400][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.639400][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.639400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.639400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.639400][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.639400][ T72] netlink_unicast+0x449/0x710 [ 2807.639400][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.639400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.639400][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.639400][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.639400][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.639400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.639400][ T72] [ 2807.641379][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2807.641379][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.641379][ T72] ipv6_find_idev+0x102/0x170 [ 2807.641379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.641379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.641379][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.641379][ T72] netlink_unicast+0x449/0x710 [ 2807.641379][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.641379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.641379][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.641379][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.641379][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.641379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.641379][ T72] [ 2807.642989][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2807.642989][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.642989][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.642989][ T72] ipv6_find_idev+0x102/0x170 [ 2807.642989][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.642989][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.642989][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.642989][ T72] netlink_unicast+0x449/0x710 [ 2807.642989][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.642989][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.642989][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.642989][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.642989][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.642989][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.642989][ T72] [ 2807.644679][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2807.644963][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2807.644963][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.644963][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.644963][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.644963][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.644963][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.644963][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.644963][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.644963][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.644963][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.644963][ T72] netlink_unicast+0x449/0x710 [ 2807.644963][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.644963][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.644963][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.644963][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.644963][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.644963][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.644963][ T72] [ 2807.646921][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2807.646921][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.646921][ T72] ipv6_find_idev+0x102/0x170 [ 2807.646921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.646921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.646921][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.646921][ T72] netlink_unicast+0x449/0x710 [ 2807.646921][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.646921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.646921][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.646921][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.646921][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.646921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.646921][ T72] [ 2807.648442][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2807.648442][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.648442][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.648442][ T72] ipv6_find_idev+0x102/0x170 [ 2807.648442][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.648442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.648442][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.648442][ T72] netlink_unicast+0x449/0x710 [ 2807.648442][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.648442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.648442][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.648442][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.648442][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.648442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.648442][ T72] [ 2807.650091][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2807.650356][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2807.650356][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.650356][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.650356][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.650356][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.650356][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.650356][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.650356][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.650356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.650356][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.650356][ T72] netlink_unicast+0x449/0x710 [ 2807.650356][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.650356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.650356][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.650356][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.650356][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.650356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.650356][ T72] [ 2807.652315][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2807.652315][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.652315][ T72] ipv6_find_idev+0x102/0x170 [ 2807.652315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.652315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.652315][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.652315][ T72] netlink_unicast+0x449/0x710 [ 2807.652315][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.652315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.652315][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.652315][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.652315][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.652315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.652315][ T72] [ 2807.653827][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2807.653827][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.653827][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.653827][ T72] ipv6_find_idev+0x102/0x170 [ 2807.653827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.653827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.653827][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.653827][ T72] netlink_unicast+0x449/0x710 [ 2807.653827][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.653827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.653827][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.653827][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.653827][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.653827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.653827][ T72] [ 2807.655474][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2807.655739][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2807.655739][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.655739][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.655739][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.655739][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.655739][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.655739][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.655739][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.655739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.655739][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.655739][ T72] netlink_unicast+0x449/0x710 [ 2807.655739][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.655739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.655739][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.655739][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.655739][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.655739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.655739][ T72] [ 2807.657690][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2807.657690][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.657690][ T72] ipv6_find_idev+0x102/0x170 [ 2807.657690][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.657690][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.657690][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.657690][ T72] netlink_unicast+0x449/0x710 [ 2807.657690][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.657690][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.657690][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.657690][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.657690][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.657690][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.657690][ T72] [ 2807.659249][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2807.659249][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.659249][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.659249][ T72] ipv6_find_idev+0x102/0x170 [ 2807.659249][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.659249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.659249][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.659249][ T72] netlink_unicast+0x449/0x710 [ 2807.659249][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.659249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.659249][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.659249][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.659249][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.659249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.659249][ T72] [ 2807.661291][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2807.661549][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2807.661549][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.661549][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.661549][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.661549][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.661549][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.661549][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.661549][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.661549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.661549][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.661549][ T72] netlink_unicast+0x449/0x710 [ 2807.661549][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.661549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.661549][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.661549][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.661549][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.661549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.661549][ T72] [ 2807.663504][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2807.663504][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.663504][ T72] ipv6_find_idev+0x102/0x170 [ 2807.663504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.663504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.663504][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.663504][ T72] netlink_unicast+0x449/0x710 [ 2807.663504][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.663504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.663504][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.663504][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.663504][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.663504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.663504][ T72] [ 2807.665005][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2807.665005][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.665005][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.665005][ T72] ipv6_find_idev+0x102/0x170 [ 2807.665005][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.665005][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.665005][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.665005][ T72] netlink_unicast+0x449/0x710 [ 2807.665005][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.665005][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.665005][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.665005][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.665005][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.665005][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.665005][ T72] [ 2807.666688][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2807.666998][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2807.666998][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.666998][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.666998][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.666998][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.666998][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.666998][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.666998][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.666998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.666998][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.666998][ T72] netlink_unicast+0x449/0x710 [ 2807.666998][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.666998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.666998][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.666998][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.666998][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.666998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.666998][ T72] [ 2807.668973][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2807.668973][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.668973][ T72] ipv6_find_idev+0x102/0x170 [ 2807.668973][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.668973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.668973][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.668973][ T72] netlink_unicast+0x449/0x710 [ 2807.668973][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.668973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.668973][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.668973][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.668973][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.668973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.668973][ T72] [ 2807.670660][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2807.670660][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.670660][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.670660][ T72] ipv6_find_idev+0x102/0x170 [ 2807.670660][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.670660][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.670660][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.670660][ T72] netlink_unicast+0x449/0x710 [ 2807.670660][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.670660][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.670660][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.670660][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.670660][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.670660][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.670660][ T72] [ 2807.672584][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2807.672897][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2807.672897][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.672897][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.672897][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.672897][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.672897][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.672897][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.672897][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.672897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.672897][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.672897][ T72] netlink_unicast+0x449/0x710 [ 2807.672897][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.672897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.672897][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.672897][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.672897][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.672897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.672897][ T72] [ 2807.675051][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2807.675051][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.675051][ T72] ipv6_find_idev+0x102/0x170 [ 2807.675051][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.675051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.675051][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.675051][ T72] netlink_unicast+0x449/0x710 [ 2807.675051][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.675051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.675051][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.675051][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.675051][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.675051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.675051][ T72] [ 2807.676745][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2807.676745][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.676745][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.676745][ T72] ipv6_find_idev+0x102/0x170 [ 2807.676745][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.676745][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.676745][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.676745][ T72] netlink_unicast+0x449/0x710 [ 2807.676745][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.676745][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.676745][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.676745][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.676745][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.676745][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.676745][ T72] [ 2807.678730][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2807.679058][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2807.679058][ T72] netdev_get_by_index+0x5e/0x80 [ 2807.679058][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2807.679058][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2807.679058][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2807.679058][ T72] ipv6_add_addr+0x411/0x2000 [ 2807.679058][ T72] inet6_addr_add+0x30e/0xa40 [ 2807.679058][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2807.679058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.679058][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.679058][ T72] netlink_unicast+0x449/0x710 [ 2807.679058][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.679058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.679058][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.679058][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.679058][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.679058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.679058][ T72] [ 2807.681189][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2807.681189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2807.681189][ T72] ipv6_find_idev+0x102/0x170 [ 2807.681189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.681189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.681189][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.681189][ T72] netlink_unicast+0x449/0x710 [ 2807.681189][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.681189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.681189][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.681189][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.681189][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.681189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.681189][ T72] [ 2807.682937][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2807.682937][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2807.682937][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2807.682937][ T72] ipv6_find_idev+0x102/0x170 [ 2807.682937][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2807.682937][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2807.682937][ T72] netlink_rcv_skb+0x130/0x360 [ 2807.682937][ T72] netlink_unicast+0x449/0x710 [ 2807.682937][ T72] netlink_sendmsg+0x723/0xbe0 [ 2807.682937][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2807.682937][ T72] ___sys_sendmsg+0xee/0x170 [ 2807.682937][ T72] __sys_sendmsg+0xcd/0x170 [ 2807.682937][ T72] do_syscall_64+0xc6/0x1e0 [ 2807.682937][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2807.682937][ T72] [ 2817.934902][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2817.935332][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2817.935332][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.935332][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.935332][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.935332][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.935332][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.935332][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.935332][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.935332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.935332][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.935332][ T72] netlink_unicast+0x449/0x710 [ 2817.935332][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.935332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.935332][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.935332][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.935332][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.935332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.935332][ T72] [ 2817.937351][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2817.937351][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.937351][ T72] ipv6_find_idev+0x102/0x170 [ 2817.937351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.937351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.937351][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.937351][ T72] netlink_unicast+0x449/0x710 [ 2817.937351][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.937351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.937351][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.937351][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.937351][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.937351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.937351][ T72] [ 2817.938899][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2817.938899][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.938899][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.938899][ T72] ipv6_find_idev+0x102/0x170 [ 2817.938899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.938899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.938899][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.938899][ T72] netlink_unicast+0x449/0x710 [ 2817.938899][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.938899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.938899][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.938899][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.938899][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.938899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.938899][ T72] [ 2817.940612][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2817.940894][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2817.940894][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.940894][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.940894][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.940894][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.940894][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.940894][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.940894][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.940894][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.940894][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.940894][ T72] netlink_unicast+0x449/0x710 [ 2817.940894][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.940894][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.940894][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.940894][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.940894][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.940894][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.940894][ T72] [ 2817.942886][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2817.942886][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.942886][ T72] ipv6_find_idev+0x102/0x170 [ 2817.942886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.942886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.942886][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.942886][ T72] netlink_unicast+0x449/0x710 [ 2817.942886][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.942886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.942886][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.942886][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.942886][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.942886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.942886][ T72] [ 2817.944437][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2817.944437][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.944437][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.944437][ T72] ipv6_find_idev+0x102/0x170 [ 2817.944437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.944437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.944437][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.944437][ T72] netlink_unicast+0x449/0x710 [ 2817.944437][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.944437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.944437][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.944437][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.944437][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.944437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.944437][ T72] [ 2817.946113][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2817.946377][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2817.946377][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.946377][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.946377][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.946377][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.946377][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.946377][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.946377][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.946377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.946377][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.946377][ T72] netlink_unicast+0x449/0x710 [ 2817.946377][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.946377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.946377][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.946377][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.946377][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.946377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.946377][ T72] [ 2817.948379][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2817.948379][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.948379][ T72] ipv6_find_idev+0x102/0x170 [ 2817.948379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.948379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.948379][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.948379][ T72] netlink_unicast+0x449/0x710 [ 2817.948379][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.948379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.948379][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.948379][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.948379][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.948379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.948379][ T72] [ 2817.949920][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2817.949920][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.949920][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.949920][ T72] ipv6_find_idev+0x102/0x170 [ 2817.949920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.949920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.949920][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.949920][ T72] netlink_unicast+0x449/0x710 [ 2817.949920][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.949920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.949920][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.949920][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.949920][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.949920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.949920][ T72] [ 2817.951603][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2817.952305][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2817.952305][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.952305][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.952305][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.952305][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.952305][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.952305][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.952305][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.952305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.952305][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.952305][ T72] netlink_unicast+0x449/0x710 [ 2817.952305][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.952305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.952305][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.952305][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.952305][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.952305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.952305][ T72] [ 2817.954288][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2817.954288][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.954288][ T72] ipv6_find_idev+0x102/0x170 [ 2817.954288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.954288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.954288][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.954288][ T72] netlink_unicast+0x449/0x710 [ 2817.954288][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.954288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.954288][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.954288][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.954288][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.954288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.954288][ T72] [ 2817.955833][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2817.955833][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.955833][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.955833][ T72] ipv6_find_idev+0x102/0x170 [ 2817.955833][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.955833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.955833][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.955833][ T72] netlink_unicast+0x449/0x710 [ 2817.955833][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.955833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.955833][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.955833][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.955833][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.955833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.955833][ T72] [ 2817.957579][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2817.957908][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2817.957908][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.957908][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.957908][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.957908][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.957908][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.957908][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.957908][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.957908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.957908][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.957908][ T72] netlink_unicast+0x449/0x710 [ 2817.957908][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.957908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.957908][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.957908][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.957908][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.957908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.957908][ T72] [ 2817.959904][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2817.959904][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.959904][ T72] ipv6_find_idev+0x102/0x170 [ 2817.959904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.959904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.959904][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.959904][ T72] netlink_unicast+0x449/0x710 [ 2817.959904][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.959904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.959904][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.959904][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.959904][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.959904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.959904][ T72] [ 2817.961432][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2817.961432][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.961432][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.961432][ T72] ipv6_find_idev+0x102/0x170 [ 2817.961432][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.961432][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.961432][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.961432][ T72] netlink_unicast+0x449/0x710 [ 2817.961432][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.961432][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.961432][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.961432][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.961432][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.961432][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.961432][ T72] [ 2817.963140][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2817.963452][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2817.963452][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.963452][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.963452][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.963452][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.963452][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.963452][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.963452][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.963452][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.963452][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.963452][ T72] netlink_unicast+0x449/0x710 [ 2817.963452][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.963452][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.963452][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.963452][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.963452][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.963452][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.963452][ T72] [ 2817.965497][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2817.965497][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.965497][ T72] ipv6_find_idev+0x102/0x170 [ 2817.965497][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.965497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.965497][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.965497][ T72] netlink_unicast+0x449/0x710 [ 2817.965497][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.965497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.965497][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.965497][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.965497][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.965497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.965497][ T72] [ 2817.967266][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2817.967266][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.967266][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.967266][ T72] ipv6_find_idev+0x102/0x170 [ 2817.967266][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.967266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.967266][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.967266][ T72] netlink_unicast+0x449/0x710 [ 2817.967266][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.967266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.967266][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.967266][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.967266][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.967266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.967266][ T72] [ 2817.969172][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2817.969478][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2817.969478][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.969478][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.969478][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.969478][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.969478][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.969478][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.969478][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.969478][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.969478][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.969478][ T72] netlink_unicast+0x449/0x710 [ 2817.969478][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.969478][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.969478][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.969478][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.969478][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.969478][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.969478][ T72] [ 2817.972159][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2817.972159][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.972159][ T72] ipv6_find_idev+0x102/0x170 [ 2817.972159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.972159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.972159][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.972159][ T72] netlink_unicast+0x449/0x710 [ 2817.972159][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.972159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.972159][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.972159][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.972159][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.972159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.972159][ T72] [ 2817.973867][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2817.973867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.973867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.973867][ T72] ipv6_find_idev+0x102/0x170 [ 2817.973867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.973867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.973867][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.973867][ T72] netlink_unicast+0x449/0x710 [ 2817.973867][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.973867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.973867][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.973867][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.973867][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.973867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.973867][ T72] [ 2817.975775][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2817.976089][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2817.976089][ T72] netdev_get_by_index+0x5e/0x80 [ 2817.976089][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2817.976089][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2817.976089][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2817.976089][ T72] ipv6_add_addr+0x411/0x2000 [ 2817.976089][ T72] inet6_addr_add+0x30e/0xa40 [ 2817.976089][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2817.976089][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.976089][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.976089][ T72] netlink_unicast+0x449/0x710 [ 2817.976089][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.976089][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.976089][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.976089][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.976089][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.976089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.976089][ T72] [ 2817.978254][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2817.978254][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2817.978254][ T72] ipv6_find_idev+0x102/0x170 [ 2817.978254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.978254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.978254][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.978254][ T72] netlink_unicast+0x449/0x710 [ 2817.978254][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.978254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.978254][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.978254][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.978254][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.978254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.978254][ T72] [ 2817.980016][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2817.980016][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2817.980016][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2817.980016][ T72] ipv6_find_idev+0x102/0x170 [ 2817.980016][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2817.980016][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2817.980016][ T72] netlink_rcv_skb+0x130/0x360 [ 2817.980016][ T72] netlink_unicast+0x449/0x710 [ 2817.980016][ T72] netlink_sendmsg+0x723/0xbe0 [ 2817.980016][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2817.980016][ T72] ___sys_sendmsg+0xee/0x170 [ 2817.980016][ T72] __sys_sendmsg+0xcd/0x170 [ 2817.980016][ T72] do_syscall_64+0xc6/0x1e0 [ 2817.980016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2817.980016][ T72] [ 2827.982797][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2827.983287][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2827.983287][ T72] netdev_get_by_index+0x5e/0x80 [ 2827.983287][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2827.983287][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2827.983287][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2827.983287][ T72] ipv6_add_addr+0x411/0x2000 [ 2827.983287][ T72] inet6_addr_add+0x30e/0xa40 [ 2827.983287][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2827.983287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.983287][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.983287][ T72] netlink_unicast+0x449/0x710 [ 2827.983287][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.983287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.983287][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.983287][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.983287][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.983287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.983287][ T72] [ 2827.985279][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2827.985279][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2827.985279][ T72] ipv6_find_idev+0x102/0x170 [ 2827.985279][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2827.985279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.985279][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.985279][ T72] netlink_unicast+0x449/0x710 [ 2827.985279][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.985279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.985279][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.985279][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.985279][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.985279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.985279][ T72] [ 2827.986796][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2827.986796][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2827.986796][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2827.986796][ T72] ipv6_find_idev+0x102/0x170 [ 2827.986796][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2827.986796][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.986796][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.986796][ T72] netlink_unicast+0x449/0x710 [ 2827.986796][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.986796][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.986796][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.986796][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.986796][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.986796][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.986796][ T72] [ 2827.988491][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2827.988776][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2827.988776][ T72] netdev_get_by_index+0x5e/0x80 [ 2827.988776][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2827.988776][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2827.988776][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2827.988776][ T72] ipv6_add_addr+0x411/0x2000 [ 2827.988776][ T72] inet6_addr_add+0x30e/0xa40 [ 2827.988776][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2827.988776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.988776][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.988776][ T72] netlink_unicast+0x449/0x710 [ 2827.988776][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.988776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.988776][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.988776][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.988776][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.988776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.988776][ T72] [ 2827.990763][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2827.990763][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2827.990763][ T72] ipv6_find_idev+0x102/0x170 [ 2827.990763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2827.990763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.990763][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.990763][ T72] netlink_unicast+0x449/0x710 [ 2827.990763][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.990763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.990763][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.990763][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.990763][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.990763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.990763][ T72] [ 2827.992288][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2827.992288][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2827.992288][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2827.992288][ T72] ipv6_find_idev+0x102/0x170 [ 2827.992288][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2827.992288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.992288][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.992288][ T72] netlink_unicast+0x449/0x710 [ 2827.992288][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.992288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.992288][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.992288][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.992288][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.992288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.992288][ T72] [ 2827.993952][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2827.994220][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2827.994220][ T72] netdev_get_by_index+0x5e/0x80 [ 2827.994220][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2827.994220][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2827.994220][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2827.994220][ T72] ipv6_add_addr+0x411/0x2000 [ 2827.994220][ T72] inet6_addr_add+0x30e/0xa40 [ 2827.994220][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2827.994220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.994220][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.994220][ T72] netlink_unicast+0x449/0x710 [ 2827.994220][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.994220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.994220][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.994220][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.994220][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.994220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.994220][ T72] [ 2827.996195][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2827.996195][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2827.996195][ T72] ipv6_find_idev+0x102/0x170 [ 2827.996195][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2827.996195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.996195][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.996195][ T72] netlink_unicast+0x449/0x710 [ 2827.996195][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.996195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.996195][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.996195][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.996195][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.996195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.996195][ T72] [ 2827.997712][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2827.997712][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2827.997712][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2827.997712][ T72] ipv6_find_idev+0x102/0x170 [ 2827.997712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2827.997712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.997712][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.997712][ T72] netlink_unicast+0x449/0x710 [ 2827.997712][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.997712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.997712][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.997712][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.997712][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.997712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.997712][ T72] [ 2827.999387][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2827.999648][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2827.999648][ T72] netdev_get_by_index+0x5e/0x80 [ 2827.999648][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2827.999648][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2827.999648][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2827.999648][ T72] ipv6_add_addr+0x411/0x2000 [ 2827.999648][ T72] inet6_addr_add+0x30e/0xa40 [ 2827.999648][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2827.999648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2827.999648][ T72] netlink_rcv_skb+0x130/0x360 [ 2827.999648][ T72] netlink_unicast+0x449/0x710 [ 2827.999648][ T72] netlink_sendmsg+0x723/0xbe0 [ 2827.999648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2827.999648][ T72] ___sys_sendmsg+0xee/0x170 [ 2827.999648][ T72] __sys_sendmsg+0xcd/0x170 [ 2827.999648][ T72] do_syscall_64+0xc6/0x1e0 [ 2827.999648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2827.999648][ T72] [ 2828.001624][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2828.001624][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2828.001624][ T72] ipv6_find_idev+0x102/0x170 [ 2828.001624][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.001624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.001624][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.001624][ T72] netlink_unicast+0x449/0x710 [ 2828.001624][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.001624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.001624][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.001624][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.001624][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.001624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.001624][ T72] [ 2828.003142][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2828.003142][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2828.003142][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2828.003142][ T72] ipv6_find_idev+0x102/0x170 [ 2828.003142][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.003142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.003142][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.003142][ T72] netlink_unicast+0x449/0x710 [ 2828.003142][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.003142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.003142][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.003142][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.003142][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.003142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.003142][ T72] [ 2828.005216][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2828.005485][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2828.005485][ T72] netdev_get_by_index+0x5e/0x80 [ 2828.005485][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2828.005485][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2828.005485][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2828.005485][ T72] ipv6_add_addr+0x411/0x2000 [ 2828.005485][ T72] inet6_addr_add+0x30e/0xa40 [ 2828.005485][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2828.005485][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.005485][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.005485][ T72] netlink_unicast+0x449/0x710 [ 2828.005485][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.005485][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.005485][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.005485][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.005485][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.005485][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.005485][ T72] [ 2828.007463][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2828.007463][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2828.007463][ T72] ipv6_find_idev+0x102/0x170 [ 2828.007463][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.007463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.007463][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.007463][ T72] netlink_unicast+0x449/0x710 [ 2828.007463][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.007463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.007463][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.007463][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.007463][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.007463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.007463][ T72] [ 2828.009029][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2828.009029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2828.009029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2828.009029][ T72] ipv6_find_idev+0x102/0x170 [ 2828.009029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.009029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.009029][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.009029][ T72] netlink_unicast+0x449/0x710 [ 2828.009029][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.009029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.009029][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.009029][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.009029][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.009029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.009029][ T72] [ 2828.010757][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2828.011020][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2828.011020][ T72] netdev_get_by_index+0x5e/0x80 [ 2828.011020][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2828.011020][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2828.011020][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2828.011020][ T72] ipv6_add_addr+0x411/0x2000 [ 2828.011020][ T72] inet6_addr_add+0x30e/0xa40 [ 2828.011020][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2828.011020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.011020][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.011020][ T72] netlink_unicast+0x449/0x710 [ 2828.011020][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.011020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.011020][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.011020][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.011020][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.011020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.011020][ T72] [ 2828.013120][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2828.013120][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2828.013120][ T72] ipv6_find_idev+0x102/0x170 [ 2828.013120][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.013120][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.013120][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.013120][ T72] netlink_unicast+0x449/0x710 [ 2828.013120][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.013120][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.013120][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.013120][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.013120][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.013120][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.013120][ T72] [ 2828.014898][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2828.014898][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2828.014898][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2828.014898][ T72] ipv6_find_idev+0x102/0x170 [ 2828.014898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.014898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.014898][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.014898][ T72] netlink_unicast+0x449/0x710 [ 2828.014898][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.014898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.014898][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.014898][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.014898][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.014898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.014898][ T72] [ 2828.016805][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2828.017076][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2828.017076][ T72] netdev_get_by_index+0x5e/0x80 [ 2828.017076][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2828.017076][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2828.017076][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2828.017076][ T72] ipv6_add_addr+0x411/0x2000 [ 2828.017076][ T72] inet6_addr_add+0x30e/0xa40 [ 2828.017076][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2828.017076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.017076][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.017076][ T72] netlink_unicast+0x449/0x710 [ 2828.017076][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.017076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.017076][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.017076][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.017076][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.017076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.017076][ T72] [ 2828.019306][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2828.019306][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2828.019306][ T72] ipv6_find_idev+0x102/0x170 [ 2828.019306][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.019306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.019306][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.019306][ T72] netlink_unicast+0x449/0x710 [ 2828.019306][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.019306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.019306][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.019306][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.019306][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.019306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.019306][ T72] [ 2828.021010][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2828.021010][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2828.021010][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2828.021010][ T72] ipv6_find_idev+0x102/0x170 [ 2828.021010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.021010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.021010][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.021010][ T72] netlink_unicast+0x449/0x710 [ 2828.021010][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.021010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.021010][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.021010][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.021010][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.021010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.021010][ T72] [ 2828.022891][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2828.023153][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2828.023153][ T72] netdev_get_by_index+0x5e/0x80 [ 2828.023153][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2828.023153][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2828.023153][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2828.023153][ T72] ipv6_add_addr+0x411/0x2000 [ 2828.023153][ T72] inet6_addr_add+0x30e/0xa40 [ 2828.023153][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2828.023153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.023153][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.023153][ T72] netlink_unicast+0x449/0x710 [ 2828.023153][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.023153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.023153][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.023153][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.023153][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.023153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.023153][ T72] [ 2828.025967][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2828.025967][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2828.025967][ T72] ipv6_find_idev+0x102/0x170 [ 2828.025967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.025967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.025967][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.025967][ T72] netlink_unicast+0x449/0x710 [ 2828.025967][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.025967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.025967][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.025967][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.025967][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.025967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.025967][ T72] [ 2828.027609][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2828.027609][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2828.027609][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2828.027609][ T72] ipv6_find_idev+0x102/0x170 [ 2828.027609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2828.027609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2828.027609][ T72] netlink_rcv_skb+0x130/0x360 [ 2828.027609][ T72] netlink_unicast+0x449/0x710 [ 2828.027609][ T72] netlink_sendmsg+0x723/0xbe0 [ 2828.027609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2828.027609][ T72] ___sys_sendmsg+0xee/0x170 [ 2828.027609][ T72] __sys_sendmsg+0xcd/0x170 [ 2828.027609][ T72] do_syscall_64+0xc6/0x1e0 [ 2828.027609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2828.027609][ T72] [ 2838.174925][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2838.175426][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2838.175426][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.175426][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.175426][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.175426][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.175426][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.175426][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.175426][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.175426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.175426][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.175426][ T72] netlink_unicast+0x449/0x710 [ 2838.175426][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.175426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.175426][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.175426][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.175426][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.175426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.175426][ T72] [ 2838.177448][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2838.177448][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.177448][ T72] ipv6_find_idev+0x102/0x170 [ 2838.177448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.177448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.177448][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.177448][ T72] netlink_unicast+0x449/0x710 [ 2838.177448][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.177448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.177448][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.177448][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.177448][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.177448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.177448][ T72] [ 2838.178970][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2838.178970][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.178970][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.178970][ T72] ipv6_find_idev+0x102/0x170 [ 2838.178970][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.178970][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.178970][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.178970][ T72] netlink_unicast+0x449/0x710 [ 2838.178970][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.178970][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.178970][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.178970][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.178970][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.178970][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.178970][ T72] [ 2838.180633][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2838.180922][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2838.180922][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.180922][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.180922][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.180922][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.180922][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.180922][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.180922][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.180922][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.180922][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.180922][ T72] netlink_unicast+0x449/0x710 [ 2838.180922][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.180922][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.180922][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.180922][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.180922][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.180922][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.180922][ T72] [ 2838.182876][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2838.182876][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.182876][ T72] ipv6_find_idev+0x102/0x170 [ 2838.182876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.182876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.182876][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.182876][ T72] netlink_unicast+0x449/0x710 [ 2838.182876][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.182876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.182876][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.182876][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.182876][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.182876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.182876][ T72] [ 2838.184387][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2838.184387][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.184387][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.184387][ T72] ipv6_find_idev+0x102/0x170 [ 2838.184387][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.184387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.184387][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.184387][ T72] netlink_unicast+0x449/0x710 [ 2838.184387][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.184387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.184387][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.184387][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.184387][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.184387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.184387][ T72] [ 2838.186056][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2838.186318][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2838.186318][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.186318][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.186318][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.186318][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.186318][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.186318][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.186318][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.186318][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.186318][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.186318][ T72] netlink_unicast+0x449/0x710 [ 2838.186318][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.186318][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.186318][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.186318][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.186318][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.186318][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.186318][ T72] [ 2838.188697][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2838.188697][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.188697][ T72] ipv6_find_idev+0x102/0x170 [ 2838.188697][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.188697][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.188697][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.188697][ T72] netlink_unicast+0x449/0x710 [ 2838.188697][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.188697][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.188697][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.188697][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.188697][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.188697][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.188697][ T72] [ 2838.190211][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2838.190211][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.190211][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.190211][ T72] ipv6_find_idev+0x102/0x170 [ 2838.190211][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.190211][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.190211][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.190211][ T72] netlink_unicast+0x449/0x710 [ 2838.190211][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.190211][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.190211][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.190211][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.190211][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.190211][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.190211][ T72] [ 2838.191868][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2838.192138][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2838.192138][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.192138][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.192138][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.192138][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.192138][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.192138][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.192138][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.192138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.192138][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.192138][ T72] netlink_unicast+0x449/0x710 [ 2838.192138][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.192138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.192138][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.192138][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.192138][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.192138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.192138][ T72] [ 2838.194104][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2838.194104][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.194104][ T72] ipv6_find_idev+0x102/0x170 [ 2838.194104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.194104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.194104][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.194104][ T72] netlink_unicast+0x449/0x710 [ 2838.194104][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.194104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.194104][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.194104][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.194104][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.194104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.194104][ T72] [ 2838.195621][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2838.195621][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.195621][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.195621][ T72] ipv6_find_idev+0x102/0x170 [ 2838.195621][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.195621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.195621][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.195621][ T72] netlink_unicast+0x449/0x710 [ 2838.195621][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.195621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.195621][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.195621][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.195621][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.195621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.195621][ T72] [ 2838.197335][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2838.197640][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2838.197640][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.197640][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.197640][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.197640][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.197640][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.197640][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.197640][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.197640][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.197640][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.197640][ T72] netlink_unicast+0x449/0x710 [ 2838.197640][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.197640][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.197640][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.197640][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.197640][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.197640][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.197640][ T72] [ 2838.199609][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2838.199609][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.199609][ T72] ipv6_find_idev+0x102/0x170 [ 2838.199609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.199609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.199609][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.199609][ T72] netlink_unicast+0x449/0x710 [ 2838.199609][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.199609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.199609][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.199609][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.199609][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.199609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.199609][ T72] [ 2838.201118][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2838.201118][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.201118][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.201118][ T72] ipv6_find_idev+0x102/0x170 [ 2838.201118][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.201118][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.201118][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.201118][ T72] netlink_unicast+0x449/0x710 [ 2838.201118][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.201118][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.201118][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.201118][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.201118][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.201118][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.201118][ T72] [ 2838.202998][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2838.203271][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2838.203271][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.203271][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.203271][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.203271][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.203271][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.203271][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.203271][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.203271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.203271][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.203271][ T72] netlink_unicast+0x449/0x710 [ 2838.203271][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.203271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.203271][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.203271][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.203271][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.203271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.203271][ T72] [ 2838.205484][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2838.205484][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.205484][ T72] ipv6_find_idev+0x102/0x170 [ 2838.205484][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.205484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.205484][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.205484][ T72] netlink_unicast+0x449/0x710 [ 2838.205484][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.205484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.205484][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.205484][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.205484][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.205484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.205484][ T72] [ 2838.207174][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2838.207174][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.207174][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.207174][ T72] ipv6_find_idev+0x102/0x170 [ 2838.207174][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.207174][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.207174][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.207174][ T72] netlink_unicast+0x449/0x710 [ 2838.207174][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.207174][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.207174][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.207174][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.207174][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.207174][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.207174][ T72] [ 2838.209107][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2838.209364][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2838.209364][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.209364][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.209364][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.209364][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.209364][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.209364][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.209364][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.209364][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.209364][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.209364][ T72] netlink_unicast+0x449/0x710 [ 2838.209364][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.209364][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.209364][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.209364][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.209364][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.209364][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.209364][ T72] [ 2838.211518][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2838.211518][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.211518][ T72] ipv6_find_idev+0x102/0x170 [ 2838.211518][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.211518][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.211518][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.211518][ T72] netlink_unicast+0x449/0x710 [ 2838.211518][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.211518][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.211518][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.211518][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.211518][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.211518][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.211518][ T72] [ 2838.213224][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2838.213224][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.213224][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.213224][ T72] ipv6_find_idev+0x102/0x170 [ 2838.213224][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.213224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.213224][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.213224][ T72] netlink_unicast+0x449/0x710 [ 2838.213224][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.213224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.213224][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.213224][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.213224][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.213224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.213224][ T72] [ 2838.215205][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2838.215468][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2838.215468][ T72] netdev_get_by_index+0x5e/0x80 [ 2838.215468][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2838.215468][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2838.215468][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2838.215468][ T72] ipv6_add_addr+0x411/0x2000 [ 2838.215468][ T72] inet6_addr_add+0x30e/0xa40 [ 2838.215468][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2838.215468][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.215468][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.215468][ T72] netlink_unicast+0x449/0x710 [ 2838.215468][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.215468][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.215468][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.215468][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.215468][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.215468][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.215468][ T72] [ 2838.217604][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2838.217604][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2838.217604][ T72] ipv6_find_idev+0x102/0x170 [ 2838.217604][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.217604][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.217604][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.217604][ T72] netlink_unicast+0x449/0x710 [ 2838.217604][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.217604][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.217604][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.217604][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.217604][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.217604][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.217604][ T72] [ 2838.219309][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2838.219309][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2838.219309][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2838.219309][ T72] ipv6_find_idev+0x102/0x170 [ 2838.219309][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2838.219309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2838.219309][ T72] netlink_rcv_skb+0x130/0x360 [ 2838.219309][ T72] netlink_unicast+0x449/0x710 [ 2838.219309][ T72] netlink_sendmsg+0x723/0xbe0 [ 2838.219309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2838.219309][ T72] ___sys_sendmsg+0xee/0x170 [ 2838.219309][ T72] __sys_sendmsg+0xcd/0x170 [ 2838.219309][ T72] do_syscall_64+0xc6/0x1e0 [ 2838.219309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2838.219309][ T72] [ 2848.310841][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2848.311342][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2848.311342][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.311342][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.311342][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.311342][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.311342][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.311342][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.311342][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.311342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.311342][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.311342][ T72] netlink_unicast+0x449/0x710 [ 2848.311342][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.311342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.311342][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.311342][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.311342][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.311342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.311342][ T72] [ 2848.313370][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2848.313370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.313370][ T72] ipv6_find_idev+0x102/0x170 [ 2848.313370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.313370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.313370][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.313370][ T72] netlink_unicast+0x449/0x710 [ 2848.313370][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.313370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.313370][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.313370][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.313370][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.313370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.313370][ T72] [ 2848.314912][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2848.314912][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.314912][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.314912][ T72] ipv6_find_idev+0x102/0x170 [ 2848.314912][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.314912][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.314912][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.314912][ T72] netlink_unicast+0x449/0x710 [ 2848.314912][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.314912][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.314912][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.314912][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.314912][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.314912][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.314912][ T72] [ 2848.316635][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2848.316922][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2848.316922][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.316922][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.316922][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.316922][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.316922][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.316922][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.316922][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.316922][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.316922][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.316922][ T72] netlink_unicast+0x449/0x710 [ 2848.316922][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.316922][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.316922][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.316922][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.316922][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.316922][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.316922][ T72] [ 2848.318928][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2848.318928][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.318928][ T72] ipv6_find_idev+0x102/0x170 [ 2848.318928][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.318928][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.318928][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.318928][ T72] netlink_unicast+0x449/0x710 [ 2848.318928][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.318928][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.318928][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.318928][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.318928][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.318928][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.318928][ T72] [ 2848.320471][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2848.320471][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.320471][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.320471][ T72] ipv6_find_idev+0x102/0x170 [ 2848.320471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.320471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.320471][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.320471][ T72] netlink_unicast+0x449/0x710 [ 2848.320471][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.320471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.320471][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.320471][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.320471][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.320471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.320471][ T72] [ 2848.322162][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2848.322443][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2848.322443][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.322443][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.322443][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.322443][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.322443][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.322443][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.322443][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.322443][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.322443][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.322443][ T72] netlink_unicast+0x449/0x710 [ 2848.322443][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.322443][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.322443][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.322443][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.322443][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.322443][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.322443][ T72] [ 2848.324456][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2848.324456][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.324456][ T72] ipv6_find_idev+0x102/0x170 [ 2848.324456][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.324456][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.324456][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.324456][ T72] netlink_unicast+0x449/0x710 [ 2848.324456][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.324456][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.324456][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.324456][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.324456][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.324456][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.324456][ T72] [ 2848.325988][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2848.325988][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.325988][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.325988][ T72] ipv6_find_idev+0x102/0x170 [ 2848.325988][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.325988][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.325988][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.325988][ T72] netlink_unicast+0x449/0x710 [ 2848.325988][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.325988][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.325988][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.325988][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.325988][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.325988][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.325988][ T72] [ 2848.327685][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2848.328405][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2848.328405][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.328405][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.328405][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.328405][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.328405][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.328405][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.328405][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.328405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.328405][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.328405][ T72] netlink_unicast+0x449/0x710 [ 2848.328405][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.328405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.328405][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.328405][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.328405][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.328405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.328405][ T72] [ 2848.330396][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2848.330396][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.330396][ T72] ipv6_find_idev+0x102/0x170 [ 2848.330396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.330396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.330396][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.330396][ T72] netlink_unicast+0x449/0x710 [ 2848.330396][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.330396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.330396][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.330396][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.330396][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.330396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.330396][ T72] [ 2848.331935][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2848.331935][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.331935][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.331935][ T72] ipv6_find_idev+0x102/0x170 [ 2848.331935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.331935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.331935][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.331935][ T72] netlink_unicast+0x449/0x710 [ 2848.331935][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.331935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.331935][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.331935][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.331935][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.331935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.331935][ T72] [ 2848.333667][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2848.334001][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2848.334001][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.334001][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.334001][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.334001][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.334001][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.334001][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.334001][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.334001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.334001][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.334001][ T72] netlink_unicast+0x449/0x710 [ 2848.334001][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.334001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.334001][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.334001][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.334001][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.334001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.334001][ T72] [ 2848.336010][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2848.336010][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.336010][ T72] ipv6_find_idev+0x102/0x170 [ 2848.336010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.336010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.336010][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.336010][ T72] netlink_unicast+0x449/0x710 [ 2848.336010][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.336010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.336010][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.336010][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.336010][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.336010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.336010][ T72] [ 2848.337566][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2848.337566][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.337566][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.337566][ T72] ipv6_find_idev+0x102/0x170 [ 2848.337566][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.337566][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.337566][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.337566][ T72] netlink_unicast+0x449/0x710 [ 2848.337566][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.337566][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.337566][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.337566][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.337566][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.337566][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.337566][ T72] [ 2848.339328][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2848.339649][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2848.339649][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.339649][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.339649][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.339649][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.339649][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.339649][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.339649][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.339649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.339649][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.339649][ T72] netlink_unicast+0x449/0x710 [ 2848.339649][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.339649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.339649][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.339649][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.339649][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.339649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.339649][ T72] [ 2848.341724][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2848.341724][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.341724][ T72] ipv6_find_idev+0x102/0x170 [ 2848.341724][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.341724][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.341724][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.341724][ T72] netlink_unicast+0x449/0x710 [ 2848.341724][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.341724][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.341724][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.341724][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.341724][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.341724][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.341724][ T72] [ 2848.343392][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2848.343392][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.343392][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.343392][ T72] ipv6_find_idev+0x102/0x170 [ 2848.343392][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.343392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.343392][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.343392][ T72] netlink_unicast+0x449/0x710 [ 2848.343392][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.343392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.343392][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.343392][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.343392][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.343392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.343392][ T72] [ 2848.345191][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2848.345513][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2848.345513][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.345513][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.345513][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.345513][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.345513][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.345513][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.345513][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.345513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.345513][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.345513][ T72] netlink_unicast+0x449/0x710 [ 2848.345513][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.345513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.345513][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.345513][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.345513][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.345513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.345513][ T72] [ 2848.347630][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2848.347630][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.347630][ T72] ipv6_find_idev+0x102/0x170 [ 2848.347630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.347630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.347630][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.347630][ T72] netlink_unicast+0x449/0x710 [ 2848.347630][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.347630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.347630][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.347630][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.347630][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.347630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.347630][ T72] [ 2848.349233][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2848.349233][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.349233][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.349233][ T72] ipv6_find_idev+0x102/0x170 [ 2848.349233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.349233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.349233][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.349233][ T72] netlink_unicast+0x449/0x710 [ 2848.349233][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.349233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.349233][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.349233][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.349233][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.349233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.349233][ T72] [ 2848.351079][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2848.351408][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2848.351408][ T72] netdev_get_by_index+0x5e/0x80 [ 2848.351408][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2848.351408][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2848.351408][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2848.351408][ T72] ipv6_add_addr+0x411/0x2000 [ 2848.351408][ T72] inet6_addr_add+0x30e/0xa40 [ 2848.351408][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2848.351408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.351408][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.351408][ T72] netlink_unicast+0x449/0x710 [ 2848.351408][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.351408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.351408][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.351408][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.351408][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.351408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.351408][ T72] [ 2848.353463][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2848.353463][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2848.353463][ T72] ipv6_find_idev+0x102/0x170 [ 2848.353463][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.353463][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.353463][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.353463][ T72] netlink_unicast+0x449/0x710 [ 2848.353463][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.353463][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.353463][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.353463][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.353463][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.353463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.353463][ T72] [ 2848.355123][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2848.355123][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2848.355123][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2848.355123][ T72] ipv6_find_idev+0x102/0x170 [ 2848.355123][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2848.355123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2848.355123][ T72] netlink_rcv_skb+0x130/0x360 [ 2848.355123][ T72] netlink_unicast+0x449/0x710 [ 2848.355123][ T72] netlink_sendmsg+0x723/0xbe0 [ 2848.355123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2848.355123][ T72] ___sys_sendmsg+0xee/0x170 [ 2848.355123][ T72] __sys_sendmsg+0xcd/0x170 [ 2848.355123][ T72] do_syscall_64+0xc6/0x1e0 [ 2848.355123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2848.355123][ T72] [ 2858.606944][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2858.607428][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2858.607428][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.607428][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.607428][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.607428][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.607428][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.607428][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.607428][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.607428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.607428][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.607428][ T72] netlink_unicast+0x449/0x710 [ 2858.607428][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.607428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.607428][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.607428][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.607428][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.607428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.607428][ T72] [ 2858.609418][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2858.609418][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.609418][ T72] ipv6_find_idev+0x102/0x170 [ 2858.609418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.609418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.609418][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.609418][ T72] netlink_unicast+0x449/0x710 [ 2858.609418][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.609418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.609418][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.609418][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.609418][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.609418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.609418][ T72] [ 2858.610939][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2858.610939][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.610939][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.610939][ T72] ipv6_find_idev+0x102/0x170 [ 2858.610939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.610939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.610939][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.610939][ T72] netlink_unicast+0x449/0x710 [ 2858.610939][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.610939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.610939][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.610939][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.610939][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.610939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.610939][ T72] [ 2858.612602][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2858.612890][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2858.612890][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.612890][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.612890][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.612890][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.612890][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.612890][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.612890][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.612890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.612890][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.612890][ T72] netlink_unicast+0x449/0x710 [ 2858.612890][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.612890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.612890][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.612890][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.612890][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.612890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.612890][ T72] [ 2858.614838][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2858.614838][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.614838][ T72] ipv6_find_idev+0x102/0x170 [ 2858.614838][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.614838][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.614838][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.614838][ T72] netlink_unicast+0x449/0x710 [ 2858.614838][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.614838][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.614838][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.614838][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.614838][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.614838][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.614838][ T72] [ 2858.616345][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2858.616345][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.616345][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.616345][ T72] ipv6_find_idev+0x102/0x170 [ 2858.616345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.616345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.616345][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.616345][ T72] netlink_unicast+0x449/0x710 [ 2858.616345][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.616345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.616345][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.616345][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.616345][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.616345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.616345][ T72] [ 2858.618004][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2858.618263][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2858.618263][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.618263][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.618263][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.618263][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.618263][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.618263][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.618263][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.618263][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.618263][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.618263][ T72] netlink_unicast+0x449/0x710 [ 2858.618263][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.618263][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.618263][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.618263][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.618263][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.618263][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.618263][ T72] [ 2858.620222][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2858.620222][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.620222][ T72] ipv6_find_idev+0x102/0x170 [ 2858.620222][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.620222][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.620222][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.620222][ T72] netlink_unicast+0x449/0x710 [ 2858.620222][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.620222][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.620222][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.620222][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.620222][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.620222][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.620222][ T72] [ 2858.621727][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2858.621727][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.621727][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.621727][ T72] ipv6_find_idev+0x102/0x170 [ 2858.621727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.621727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.621727][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.621727][ T72] netlink_unicast+0x449/0x710 [ 2858.621727][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.621727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.621727][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.621727][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.621727][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.621727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.621727][ T72] [ 2858.623385][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2858.623649][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2858.623649][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.623649][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.623649][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.623649][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.623649][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.623649][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.623649][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.623649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.623649][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.623649][ T72] netlink_unicast+0x449/0x710 [ 2858.623649][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.623649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.623649][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.623649][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.623649][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.623649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.623649][ T72] [ 2858.625609][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2858.625609][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.625609][ T72] ipv6_find_idev+0x102/0x170 [ 2858.625609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.625609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.625609][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.625609][ T72] netlink_unicast+0x449/0x710 [ 2858.625609][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.625609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.625609][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.625609][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.625609][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.625609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.625609][ T72] [ 2858.627120][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2858.627120][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.627120][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.627120][ T72] ipv6_find_idev+0x102/0x170 [ 2858.627120][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.627120][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.627120][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.627120][ T72] netlink_unicast+0x449/0x710 [ 2858.627120][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.627120][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.627120][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.627120][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.627120][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.627120][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.627120][ T72] [ 2858.629176][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2858.629434][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2858.629434][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.629434][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.629434][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.629434][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.629434][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.629434][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.629434][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.629434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.629434][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.629434][ T72] netlink_unicast+0x449/0x710 [ 2858.629434][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.629434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.629434][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.629434][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.629434][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.629434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.629434][ T72] [ 2858.631391][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2858.631391][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.631391][ T72] ipv6_find_idev+0x102/0x170 [ 2858.631391][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.631391][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.631391][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.631391][ T72] netlink_unicast+0x449/0x710 [ 2858.631391][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.631391][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.631391][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.631391][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.631391][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.631391][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.631391][ T72] [ 2858.632899][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2858.632899][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.632899][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.632899][ T72] ipv6_find_idev+0x102/0x170 [ 2858.632899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.632899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.632899][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.632899][ T72] netlink_unicast+0x449/0x710 [ 2858.632899][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.632899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.632899][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.632899][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.632899][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.632899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.632899][ T72] [ 2858.634598][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2858.634924][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2858.634924][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.634924][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.634924][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.634924][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.634924][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.634924][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.634924][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.634924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.634924][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.634924][ T72] netlink_unicast+0x449/0x710 [ 2858.634924][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.634924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.634924][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.634924][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.634924][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.634924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.634924][ T72] [ 2858.636946][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2858.636946][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.636946][ T72] ipv6_find_idev+0x102/0x170 [ 2858.636946][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.636946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.636946][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.636946][ T72] netlink_unicast+0x449/0x710 [ 2858.636946][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.636946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.636946][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.636946][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.636946][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.636946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.636946][ T72] [ 2858.638642][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2858.638642][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.638642][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.638642][ T72] ipv6_find_idev+0x102/0x170 [ 2858.638642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.638642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.638642][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.638642][ T72] netlink_unicast+0x449/0x710 [ 2858.638642][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.638642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.638642][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.638642][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.638642][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.638642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.638642][ T72] [ 2858.640583][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2858.640891][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2858.640891][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.640891][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.640891][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.640891][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.640891][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.640891][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.640891][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.640891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.640891][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.640891][ T72] netlink_unicast+0x449/0x710 [ 2858.640891][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.640891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.640891][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.640891][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.640891][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.640891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.640891][ T72] [ 2858.643024][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2858.643024][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.643024][ T72] ipv6_find_idev+0x102/0x170 [ 2858.643024][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.643024][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.643024][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.643024][ T72] netlink_unicast+0x449/0x710 [ 2858.643024][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.643024][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.643024][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.643024][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.643024][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.643024][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.643024][ T72] [ 2858.644651][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2858.644651][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.644651][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.644651][ T72] ipv6_find_idev+0x102/0x170 [ 2858.644651][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.644651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.644651][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.644651][ T72] netlink_unicast+0x449/0x710 [ 2858.644651][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.644651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.644651][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.644651][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.644651][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.644651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.644651][ T72] [ 2858.646571][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2858.646899][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2858.646899][ T72] netdev_get_by_index+0x5e/0x80 [ 2858.646899][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2858.646899][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2858.646899][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2858.646899][ T72] ipv6_add_addr+0x411/0x2000 [ 2858.646899][ T72] inet6_addr_add+0x30e/0xa40 [ 2858.646899][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2858.646899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.646899][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.646899][ T72] netlink_unicast+0x449/0x710 [ 2858.646899][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.646899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.646899][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.646899][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.646899][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.646899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.646899][ T72] [ 2858.649056][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2858.649056][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2858.649056][ T72] ipv6_find_idev+0x102/0x170 [ 2858.649056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.649056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.649056][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.649056][ T72] netlink_unicast+0x449/0x710 [ 2858.649056][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.649056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.649056][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.649056][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.649056][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.649056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.649056][ T72] [ 2858.650807][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2858.650807][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2858.650807][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2858.650807][ T72] ipv6_find_idev+0x102/0x170 [ 2858.650807][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2858.650807][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2858.650807][ T72] netlink_rcv_skb+0x130/0x360 [ 2858.650807][ T72] netlink_unicast+0x449/0x710 [ 2858.650807][ T72] netlink_sendmsg+0x723/0xbe0 [ 2858.650807][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2858.650807][ T72] ___sys_sendmsg+0xee/0x170 [ 2858.650807][ T72] __sys_sendmsg+0xcd/0x170 [ 2858.650807][ T72] do_syscall_64+0xc6/0x1e0 [ 2858.650807][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2858.650807][ T72] [ 2868.862881][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2868.863387][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2868.863387][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.863387][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.863387][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.863387][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.863387][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.863387][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.863387][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.863387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.863387][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.863387][ T72] netlink_unicast+0x449/0x710 [ 2868.863387][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.863387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.863387][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.863387][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.863387][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.863387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.863387][ T72] [ 2868.865394][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2868.865394][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.865394][ T72] ipv6_find_idev+0x102/0x170 [ 2868.865394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.865394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.865394][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.865394][ T72] netlink_unicast+0x449/0x710 [ 2868.865394][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.865394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.865394][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.865394][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.865394][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.865394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.865394][ T72] [ 2868.866941][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2868.866941][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.866941][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.866941][ T72] ipv6_find_idev+0x102/0x170 [ 2868.866941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.866941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.866941][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.866941][ T72] netlink_unicast+0x449/0x710 [ 2868.866941][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.866941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.866941][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.866941][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.866941][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.866941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.866941][ T72] [ 2868.868649][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2868.868954][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2868.868954][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.868954][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.868954][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.868954][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.868954][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.868954][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.868954][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.868954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.868954][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.868954][ T72] netlink_unicast+0x449/0x710 [ 2868.868954][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.868954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.868954][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.868954][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.868954][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.868954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.868954][ T72] [ 2868.870938][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2868.870938][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.870938][ T72] ipv6_find_idev+0x102/0x170 [ 2868.870938][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.870938][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.870938][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.870938][ T72] netlink_unicast+0x449/0x710 [ 2868.870938][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.870938][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.870938][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.870938][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.870938][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.870938][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.870938][ T72] [ 2868.872473][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2868.872473][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.872473][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.872473][ T72] ipv6_find_idev+0x102/0x170 [ 2868.872473][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.872473][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.872473][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.872473][ T72] netlink_unicast+0x449/0x710 [ 2868.872473][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.872473][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.872473][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.872473][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.872473][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.872473][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.872473][ T72] [ 2868.874158][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2868.874424][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2868.874424][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.874424][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.874424][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.874424][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.874424][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.874424][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.874424][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.874424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.874424][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.874424][ T72] netlink_unicast+0x449/0x710 [ 2868.874424][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.874424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.874424][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.874424][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.874424][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.874424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.874424][ T72] [ 2868.876403][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2868.876403][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.876403][ T72] ipv6_find_idev+0x102/0x170 [ 2868.876403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.876403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.876403][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.876403][ T72] netlink_unicast+0x449/0x710 [ 2868.876403][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.876403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.876403][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.876403][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.876403][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.876403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.876403][ T72] [ 2868.877945][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2868.877945][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.877945][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.877945][ T72] ipv6_find_idev+0x102/0x170 [ 2868.877945][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.877945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.877945][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.877945][ T72] netlink_unicast+0x449/0x710 [ 2868.877945][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.877945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.877945][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.877945][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.877945][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.877945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.877945][ T72] [ 2868.879629][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2868.880321][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2868.880321][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.880321][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.880321][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.880321][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.880321][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.880321][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.880321][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.880321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.880321][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.880321][ T72] netlink_unicast+0x449/0x710 [ 2868.880321][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.880321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.880321][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.880321][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.880321][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.880321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.880321][ T72] [ 2868.882315][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2868.882315][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.882315][ T72] ipv6_find_idev+0x102/0x170 [ 2868.882315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.882315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.882315][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.882315][ T72] netlink_unicast+0x449/0x710 [ 2868.882315][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.882315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.882315][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.882315][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.882315][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.882315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.882315][ T72] [ 2868.883840][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2868.883840][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.883840][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.883840][ T72] ipv6_find_idev+0x102/0x170 [ 2868.883840][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.883840][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.883840][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.883840][ T72] netlink_unicast+0x449/0x710 [ 2868.883840][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.883840][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.883840][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.883840][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.883840][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.883840][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.883840][ T72] [ 2868.885551][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2868.885866][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2868.885866][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.885866][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.885866][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.885866][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.885866][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.885866][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.885866][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.885866][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.885866][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.885866][ T72] netlink_unicast+0x449/0x710 [ 2868.885866][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.885866][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.885866][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.885866][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.885866][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.885866][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.885866][ T72] [ 2868.887884][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2868.887884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.887884][ T72] ipv6_find_idev+0x102/0x170 [ 2868.887884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.887884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.887884][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.887884][ T72] netlink_unicast+0x449/0x710 [ 2868.887884][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.887884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.887884][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.887884][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.887884][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.887884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.887884][ T72] [ 2868.889410][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2868.889410][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.889410][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.889410][ T72] ipv6_find_idev+0x102/0x170 [ 2868.889410][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.889410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.889410][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.889410][ T72] netlink_unicast+0x449/0x710 [ 2868.889410][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.889410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.889410][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.889410][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.889410][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.889410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.889410][ T72] [ 2868.891136][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2868.891449][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2868.891449][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.891449][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.891449][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.891449][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.891449][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.891449][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.891449][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.891449][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.891449][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.891449][ T72] netlink_unicast+0x449/0x710 [ 2868.891449][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.891449][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.891449][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.891449][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.891449][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.891449][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.891449][ T72] [ 2868.893521][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2868.893521][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.893521][ T72] ipv6_find_idev+0x102/0x170 [ 2868.893521][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.893521][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.893521][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.893521][ T72] netlink_unicast+0x449/0x710 [ 2868.893521][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.893521][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.893521][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.893521][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.893521][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.893521][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.893521][ T72] [ 2868.895287][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2868.895287][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.895287][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.895287][ T72] ipv6_find_idev+0x102/0x170 [ 2868.895287][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.895287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.895287][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.895287][ T72] netlink_unicast+0x449/0x710 [ 2868.895287][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.895287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.895287][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.895287][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.895287][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.895287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.895287][ T72] [ 2868.897182][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2868.897492][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2868.897492][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.897492][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.897492][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.897492][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.897492][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.897492][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.897492][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.897492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.897492][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.897492][ T72] netlink_unicast+0x449/0x710 [ 2868.897492][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.897492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.897492][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.897492][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.897492][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.897492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.897492][ T72] [ 2868.899687][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2868.899687][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.899687][ T72] ipv6_find_idev+0x102/0x170 [ 2868.899687][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.899687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.899687][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.899687][ T72] netlink_unicast+0x449/0x710 [ 2868.899687][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.899687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.899687][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.899687][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.899687][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.899687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.899687][ T72] [ 2868.901411][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2868.901411][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.901411][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.901411][ T72] ipv6_find_idev+0x102/0x170 [ 2868.901411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.901411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.901411][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.901411][ T72] netlink_unicast+0x449/0x710 [ 2868.901411][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.901411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.901411][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.901411][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.901411][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.901411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.901411][ T72] [ 2868.903302][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2868.903611][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2868.903611][ T72] netdev_get_by_index+0x5e/0x80 [ 2868.903611][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2868.903611][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2868.903611][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2868.903611][ T72] ipv6_add_addr+0x411/0x2000 [ 2868.903611][ T72] inet6_addr_add+0x30e/0xa40 [ 2868.903611][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2868.903611][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.903611][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.903611][ T72] netlink_unicast+0x449/0x710 [ 2868.903611][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.903611][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.903611][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.903611][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.903611][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.903611][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.903611][ T72] [ 2868.905777][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2868.905777][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2868.905777][ T72] ipv6_find_idev+0x102/0x170 [ 2868.905777][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.905777][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.905777][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.905777][ T72] netlink_unicast+0x449/0x710 [ 2868.905777][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.905777][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.905777][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.905777][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.905777][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.905777][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.905777][ T72] [ 2868.907537][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2868.907537][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2868.907537][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2868.907537][ T72] ipv6_find_idev+0x102/0x170 [ 2868.907537][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2868.907537][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2868.907537][ T72] netlink_rcv_skb+0x130/0x360 [ 2868.907537][ T72] netlink_unicast+0x449/0x710 [ 2868.907537][ T72] netlink_sendmsg+0x723/0xbe0 [ 2868.907537][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2868.907537][ T72] ___sys_sendmsg+0xee/0x170 [ 2868.907537][ T72] __sys_sendmsg+0xcd/0x170 [ 2868.907537][ T72] do_syscall_64+0xc6/0x1e0 [ 2868.907537][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2868.907537][ T72] [ 2879.150882][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2879.151388][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2879.151388][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.151388][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.151388][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.151388][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.151388][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.151388][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.151388][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.151388][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.151388][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.151388][ T72] netlink_unicast+0x449/0x710 [ 2879.151388][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.151388][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.151388][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.151388][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.151388][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.151388][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.151388][ T72] [ 2879.153396][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2879.153396][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.153396][ T72] ipv6_find_idev+0x102/0x170 [ 2879.153396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.153396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.153396][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.153396][ T72] netlink_unicast+0x449/0x710 [ 2879.153396][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.153396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.153396][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.153396][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.153396][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.153396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.153396][ T72] [ 2879.154929][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2879.154929][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.154929][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.154929][ T72] ipv6_find_idev+0x102/0x170 [ 2879.154929][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.154929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.154929][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.154929][ T72] netlink_unicast+0x449/0x710 [ 2879.154929][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.154929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.154929][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.154929][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.154929][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.154929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.154929][ T72] [ 2879.156628][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2879.156945][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2879.156945][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.156945][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.156945][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.156945][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.156945][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.156945][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.156945][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.156945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.156945][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.156945][ T72] netlink_unicast+0x449/0x710 [ 2879.156945][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.156945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.156945][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.156945][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.156945][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.156945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.156945][ T72] [ 2879.158949][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2879.158949][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.158949][ T72] ipv6_find_idev+0x102/0x170 [ 2879.158949][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.158949][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.158949][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.158949][ T72] netlink_unicast+0x449/0x710 [ 2879.158949][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.158949][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.158949][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.158949][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.158949][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.158949][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.158949][ T72] [ 2879.160491][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2879.160491][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.160491][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.160491][ T72] ipv6_find_idev+0x102/0x170 [ 2879.160491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.160491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.160491][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.160491][ T72] netlink_unicast+0x449/0x710 [ 2879.160491][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.160491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.160491][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.160491][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.160491][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.160491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.160491][ T72] [ 2879.162178][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2879.162446][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2879.162446][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.162446][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.162446][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.162446][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.162446][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.162446][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.162446][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.162446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.162446][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.162446][ T72] netlink_unicast+0x449/0x710 [ 2879.162446][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.162446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.162446][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.162446][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.162446][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.162446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.162446][ T72] [ 2879.164426][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2879.164426][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.164426][ T72] ipv6_find_idev+0x102/0x170 [ 2879.164426][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.164426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.164426][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.164426][ T72] netlink_unicast+0x449/0x710 [ 2879.164426][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.164426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.164426][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.164426][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.164426][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.164426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.164426][ T72] [ 2879.165960][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2879.165960][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.165960][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.165960][ T72] ipv6_find_idev+0x102/0x170 [ 2879.165960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.165960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.165960][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.165960][ T72] netlink_unicast+0x449/0x710 [ 2879.165960][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.165960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.165960][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.165960][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.165960][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.165960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.165960][ T72] [ 2879.167659][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2879.168373][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2879.168373][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.168373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.168373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.168373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.168373][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.168373][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.168373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.168373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.168373][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.168373][ T72] netlink_unicast+0x449/0x710 [ 2879.168373][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.168373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.168373][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.168373][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.168373][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.168373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.168373][ T72] [ 2879.170358][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2879.170358][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.170358][ T72] ipv6_find_idev+0x102/0x170 [ 2879.170358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.170358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.170358][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.170358][ T72] netlink_unicast+0x449/0x710 [ 2879.170358][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.170358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.170358][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.170358][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.170358][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.170358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.170358][ T72] [ 2879.171890][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2879.171890][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.171890][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.171890][ T72] ipv6_find_idev+0x102/0x170 [ 2879.171890][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.171890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.171890][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.171890][ T72] netlink_unicast+0x449/0x710 [ 2879.171890][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.171890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.171890][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.171890][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.171890][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.171890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.171890][ T72] [ 2879.173611][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2879.173935][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2879.173935][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.173935][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.173935][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.173935][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.173935][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.173935][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.173935][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.173935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.173935][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.173935][ T72] netlink_unicast+0x449/0x710 [ 2879.173935][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.173935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.173935][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.173935][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.173935][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.173935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.173935][ T72] [ 2879.175923][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2879.175923][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.175923][ T72] ipv6_find_idev+0x102/0x170 [ 2879.175923][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.175923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.175923][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.175923][ T72] netlink_unicast+0x449/0x710 [ 2879.175923][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.175923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.175923][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.175923][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.175923][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.175923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.175923][ T72] [ 2879.177451][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2879.177451][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.177451][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.177451][ T72] ipv6_find_idev+0x102/0x170 [ 2879.177451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.177451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.177451][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.177451][ T72] netlink_unicast+0x449/0x710 [ 2879.177451][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.177451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.177451][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.177451][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.177451][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.177451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.177451][ T72] [ 2879.179185][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2879.179493][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2879.179493][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.179493][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.179493][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.179493][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.179493][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.179493][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.179493][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.179493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.179493][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.179493][ T72] netlink_unicast+0x449/0x710 [ 2879.179493][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.179493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.179493][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.179493][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.179493][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.179493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.179493][ T72] [ 2879.181537][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2879.181537][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.181537][ T72] ipv6_find_idev+0x102/0x170 [ 2879.181537][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.181537][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.181537][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.181537][ T72] netlink_unicast+0x449/0x710 [ 2879.181537][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.181537][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.181537][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.181537][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.181537][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.181537][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.181537][ T72] [ 2879.183301][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2879.183301][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.183301][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.183301][ T72] ipv6_find_idev+0x102/0x170 [ 2879.183301][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.183301][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.183301][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.183301][ T72] netlink_unicast+0x449/0x710 [ 2879.183301][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.183301][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.183301][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.183301][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.183301][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.183301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.183301][ T72] [ 2879.185216][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2879.185527][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2879.185527][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.185527][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.185527][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.185527][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.185527][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.185527][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.185527][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.185527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.185527][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.185527][ T72] netlink_unicast+0x449/0x710 [ 2879.185527][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.185527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.185527][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.185527][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.185527][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.185527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.185527][ T72] [ 2879.187713][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2879.187713][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.187713][ T72] ipv6_find_idev+0x102/0x170 [ 2879.187713][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.187713][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.187713][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.187713][ T72] netlink_unicast+0x449/0x710 [ 2879.187713][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.187713][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.187713][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.187713][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.187713][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.187713][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.187713][ T72] [ 2879.189421][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2879.189421][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.189421][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.189421][ T72] ipv6_find_idev+0x102/0x170 [ 2879.189421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.189421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.189421][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.189421][ T72] netlink_unicast+0x449/0x710 [ 2879.189421][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.189421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.189421][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.189421][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.189421][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.189421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.189421][ T72] [ 2879.191320][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2879.191631][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2879.191631][ T72] netdev_get_by_index+0x5e/0x80 [ 2879.191631][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2879.191631][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2879.191631][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2879.191631][ T72] ipv6_add_addr+0x411/0x2000 [ 2879.191631][ T72] inet6_addr_add+0x30e/0xa40 [ 2879.191631][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2879.191631][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.191631][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.191631][ T72] netlink_unicast+0x449/0x710 [ 2879.191631][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.191631][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.191631][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.191631][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.191631][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.191631][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.191631][ T72] [ 2879.193807][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2879.193807][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2879.193807][ T72] ipv6_find_idev+0x102/0x170 [ 2879.193807][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.193807][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.193807][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.193807][ T72] netlink_unicast+0x449/0x710 [ 2879.193807][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.193807][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.193807][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.193807][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.193807][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.193807][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.193807][ T72] [ 2879.195580][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2879.195580][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2879.195580][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2879.195580][ T72] ipv6_find_idev+0x102/0x170 [ 2879.195580][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2879.195580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2879.195580][ T72] netlink_rcv_skb+0x130/0x360 [ 2879.195580][ T72] netlink_unicast+0x449/0x710 [ 2879.195580][ T72] netlink_sendmsg+0x723/0xbe0 [ 2879.195580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2879.195580][ T72] ___sys_sendmsg+0xee/0x170 [ 2879.195580][ T72] __sys_sendmsg+0xcd/0x170 [ 2879.195580][ T72] do_syscall_64+0xc6/0x1e0 [ 2879.195580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2879.195580][ T72] [ 2889.438872][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2889.439368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2889.439368][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.439368][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.439368][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.439368][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.439368][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.439368][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.439368][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.439368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.439368][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.439368][ T72] netlink_unicast+0x449/0x710 [ 2889.439368][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.439368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.439368][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.439368][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.439368][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.439368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.439368][ T72] [ 2889.441366][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2889.441366][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.441366][ T72] ipv6_find_idev+0x102/0x170 [ 2889.441366][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.441366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.441366][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.441366][ T72] netlink_unicast+0x449/0x710 [ 2889.441366][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.441366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.441366][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.441366][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.441366][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.441366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.441366][ T72] [ 2889.442902][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2889.442902][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.442902][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.442902][ T72] ipv6_find_idev+0x102/0x170 [ 2889.442902][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.442902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.442902][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.442902][ T72] netlink_unicast+0x449/0x710 [ 2889.442902][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.442902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.442902][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.442902][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.442902][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.442902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.442902][ T72] [ 2889.444601][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2889.444893][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2889.444893][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.444893][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.444893][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.444893][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.444893][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.444893][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.444893][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.444893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.444893][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.444893][ T72] netlink_unicast+0x449/0x710 [ 2889.444893][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.444893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.444893][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.444893][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.444893][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.444893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.444893][ T72] [ 2889.446884][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2889.446884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.446884][ T72] ipv6_find_idev+0x102/0x170 [ 2889.446884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.446884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.446884][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.446884][ T72] netlink_unicast+0x449/0x710 [ 2889.446884][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.446884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.446884][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.446884][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.446884][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.446884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.446884][ T72] [ 2889.448419][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2889.448419][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.448419][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.448419][ T72] ipv6_find_idev+0x102/0x170 [ 2889.448419][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.448419][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.448419][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.448419][ T72] netlink_unicast+0x449/0x710 [ 2889.448419][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.448419][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.448419][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.448419][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.448419][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.448419][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.448419][ T72] [ 2889.450104][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2889.450374][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2889.450374][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.450374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.450374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.450374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.450374][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.450374][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.450374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.450374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.450374][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.450374][ T72] netlink_unicast+0x449/0x710 [ 2889.450374][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.450374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.450374][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.450374][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.450374][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.450374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.450374][ T72] [ 2889.452357][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2889.452357][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.452357][ T72] ipv6_find_idev+0x102/0x170 [ 2889.452357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.452357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.452357][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.452357][ T72] netlink_unicast+0x449/0x710 [ 2889.452357][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.452357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.452357][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.452357][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.452357][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.452357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.452357][ T72] [ 2889.453917][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2889.453917][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.453917][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.453917][ T72] ipv6_find_idev+0x102/0x170 [ 2889.453917][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.453917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.453917][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.453917][ T72] netlink_unicast+0x449/0x710 [ 2889.453917][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.453917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.453917][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.453917][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.453917][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.453917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.453917][ T72] [ 2889.455592][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2889.456293][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2889.456293][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.456293][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.456293][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.456293][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.456293][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.456293][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.456293][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.456293][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.456293][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.456293][ T72] netlink_unicast+0x449/0x710 [ 2889.456293][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.456293][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.456293][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.456293][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.456293][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.456293][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.456293][ T72] [ 2889.458312][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2889.458312][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.458312][ T72] ipv6_find_idev+0x102/0x170 [ 2889.458312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.458312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.458312][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.458312][ T72] netlink_unicast+0x449/0x710 [ 2889.458312][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.458312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.458312][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.458312][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.458312][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.458312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.458312][ T72] [ 2889.459836][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2889.459836][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.459836][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.459836][ T72] ipv6_find_idev+0x102/0x170 [ 2889.459836][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.459836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.459836][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.459836][ T72] netlink_unicast+0x449/0x710 [ 2889.459836][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.459836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.459836][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.459836][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.459836][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.459836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.459836][ T72] [ 2889.461572][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2889.461888][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2889.461888][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.461888][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.461888][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.461888][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.461888][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.461888][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.461888][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.461888][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.461888][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.461888][ T72] netlink_unicast+0x449/0x710 [ 2889.461888][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.461888][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.461888][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.461888][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.461888][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.461888][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.461888][ T72] [ 2889.463901][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2889.463901][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.463901][ T72] ipv6_find_idev+0x102/0x170 [ 2889.463901][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.463901][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.463901][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.463901][ T72] netlink_unicast+0x449/0x710 [ 2889.463901][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.463901][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.463901][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.463901][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.463901][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.463901][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.463901][ T72] [ 2889.465435][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2889.465435][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.465435][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.465435][ T72] ipv6_find_idev+0x102/0x170 [ 2889.465435][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.465435][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.465435][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.465435][ T72] netlink_unicast+0x449/0x710 [ 2889.465435][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.465435][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.465435][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.465435][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.465435][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.465435][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.465435][ T72] [ 2889.467699][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2889.468020][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2889.468020][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.468020][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.468020][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.468020][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.468020][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.468020][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.468020][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.468020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.468020][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.468020][ T72] netlink_unicast+0x449/0x710 [ 2889.468020][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.468020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.468020][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.468020][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.468020][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.468020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.468020][ T72] [ 2889.470069][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2889.470069][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.470069][ T72] ipv6_find_idev+0x102/0x170 [ 2889.470069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.470069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.470069][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.470069][ T72] netlink_unicast+0x449/0x710 [ 2889.470069][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.470069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.470069][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.470069][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.470069][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.470069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.470069][ T72] [ 2889.471851][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2889.471851][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.471851][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.471851][ T72] ipv6_find_idev+0x102/0x170 [ 2889.471851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.471851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.471851][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.471851][ T72] netlink_unicast+0x449/0x710 [ 2889.471851][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.471851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.471851][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.471851][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.471851][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.471851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.471851][ T72] [ 2889.473789][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2889.474100][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2889.474100][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.474100][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.474100][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.474100][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.474100][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.474100][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.474100][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.474100][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.474100][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.474100][ T72] netlink_unicast+0x449/0x710 [ 2889.474100][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.474100][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.474100][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.474100][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.474100][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.474100][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.474100][ T72] [ 2889.476262][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2889.476262][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.476262][ T72] ipv6_find_idev+0x102/0x170 [ 2889.476262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.476262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.476262][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.476262][ T72] netlink_unicast+0x449/0x710 [ 2889.476262][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.476262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.476262][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.476262][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.476262][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.476262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.476262][ T72] [ 2889.477977][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2889.477977][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.477977][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.477977][ T72] ipv6_find_idev+0x102/0x170 [ 2889.477977][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.477977][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.477977][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.477977][ T72] netlink_unicast+0x449/0x710 [ 2889.477977][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.477977][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.477977][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.477977][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.477977][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.477977][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.477977][ T72] [ 2889.480251][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2889.480566][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2889.480566][ T72] netdev_get_by_index+0x5e/0x80 [ 2889.480566][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2889.480566][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2889.480566][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2889.480566][ T72] ipv6_add_addr+0x411/0x2000 [ 2889.480566][ T72] inet6_addr_add+0x30e/0xa40 [ 2889.480566][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2889.480566][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.480566][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.480566][ T72] netlink_unicast+0x449/0x710 [ 2889.480566][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.480566][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.480566][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.480566][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.480566][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.480566][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.480566][ T72] [ 2889.482737][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2889.482737][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2889.482737][ T72] ipv6_find_idev+0x102/0x170 [ 2889.482737][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.482737][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.482737][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.482737][ T72] netlink_unicast+0x449/0x710 [ 2889.482737][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.482737][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.482737][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.482737][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.482737][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.482737][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.482737][ T72] [ 2889.484503][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2889.484503][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2889.484503][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2889.484503][ T72] ipv6_find_idev+0x102/0x170 [ 2889.484503][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2889.484503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2889.484503][ T72] netlink_rcv_skb+0x130/0x360 [ 2889.484503][ T72] netlink_unicast+0x449/0x710 [ 2889.484503][ T72] netlink_sendmsg+0x723/0xbe0 [ 2889.484503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2889.484503][ T72] ___sys_sendmsg+0xee/0x170 [ 2889.484503][ T72] __sys_sendmsg+0xcd/0x170 [ 2889.484503][ T72] do_syscall_64+0xc6/0x1e0 [ 2889.484503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2889.484503][ T72] [ 2899.726848][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2899.727288][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2899.727288][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.727288][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.727288][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.727288][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.727288][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.727288][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.727288][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.727288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.727288][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.727288][ T72] netlink_unicast+0x449/0x710 [ 2899.727288][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.727288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.727288][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.727288][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.727288][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.727288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.727288][ T72] [ 2899.729337][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2899.729337][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.729337][ T72] ipv6_find_idev+0x102/0x170 [ 2899.729337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.729337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.729337][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.729337][ T72] netlink_unicast+0x449/0x710 [ 2899.729337][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.729337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.729337][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.729337][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.729337][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.729337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.729337][ T72] [ 2899.730905][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2899.730905][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.730905][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.730905][ T72] ipv6_find_idev+0x102/0x170 [ 2899.730905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.730905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.730905][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.730905][ T72] netlink_unicast+0x449/0x710 [ 2899.730905][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.730905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.730905][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.730905][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.730905][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.730905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.730905][ T72] [ 2899.732633][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2899.732927][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2899.732927][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.732927][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.732927][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.732927][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.732927][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.732927][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.732927][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.732927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.732927][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.732927][ T72] netlink_unicast+0x449/0x710 [ 2899.732927][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.732927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.732927][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.732927][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.732927][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.732927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.732927][ T72] [ 2899.734954][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2899.734954][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.734954][ T72] ipv6_find_idev+0x102/0x170 [ 2899.734954][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.734954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.734954][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.734954][ T72] netlink_unicast+0x449/0x710 [ 2899.734954][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.734954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.734954][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.734954][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.734954][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.734954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.734954][ T72] [ 2899.736525][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2899.736525][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.736525][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.736525][ T72] ipv6_find_idev+0x102/0x170 [ 2899.736525][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.736525][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.736525][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.736525][ T72] netlink_unicast+0x449/0x710 [ 2899.736525][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.736525][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.736525][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.736525][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.736525][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.736525][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.736525][ T72] [ 2899.738313][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2899.738581][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2899.738581][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.738581][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.738581][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.738581][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.738581][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.738581][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.738581][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.738581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.738581][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.738581][ T72] netlink_unicast+0x449/0x710 [ 2899.738581][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.738581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.738581][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.738581][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.738581][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.738581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.738581][ T72] [ 2899.740573][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2899.740573][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.740573][ T72] ipv6_find_idev+0x102/0x170 [ 2899.740573][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.740573][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.740573][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.740573][ T72] netlink_unicast+0x449/0x710 [ 2899.740573][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.740573][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.740573][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.740573][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.740573][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.740573][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.740573][ T72] [ 2899.742097][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2899.742097][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.742097][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.742097][ T72] ipv6_find_idev+0x102/0x170 [ 2899.742097][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.742097][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.742097][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.742097][ T72] netlink_unicast+0x449/0x710 [ 2899.742097][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.742097][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.742097][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.742097][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.742097][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.742097][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.742097][ T72] [ 2899.743774][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2899.744035][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2899.744035][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.744035][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.744035][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.744035][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.744035][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.744035][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.744035][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.744035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.744035][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.744035][ T72] netlink_unicast+0x449/0x710 [ 2899.744035][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.744035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.744035][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.744035][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.744035][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.744035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.744035][ T72] [ 2899.746409][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2899.746409][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.746409][ T72] ipv6_find_idev+0x102/0x170 [ 2899.746409][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.746409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.746409][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.746409][ T72] netlink_unicast+0x449/0x710 [ 2899.746409][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.746409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.746409][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.746409][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.746409][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.746409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.746409][ T72] [ 2899.747945][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2899.747945][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.747945][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.747945][ T72] ipv6_find_idev+0x102/0x170 [ 2899.747945][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.747945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.747945][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.747945][ T72] netlink_unicast+0x449/0x710 [ 2899.747945][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.747945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.747945][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.747945][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.747945][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.747945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.747945][ T72] [ 2899.750026][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2899.750616][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2899.750616][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.750616][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.750616][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.750616][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.750616][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.750616][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.750616][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.750616][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.750616][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.750616][ T72] netlink_unicast+0x449/0x710 [ 2899.750616][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.750616][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.750616][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.750616][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.750616][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.750616][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.750616][ T72] [ 2899.752595][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2899.752595][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.752595][ T72] ipv6_find_idev+0x102/0x170 [ 2899.752595][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.752595][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.752595][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.752595][ T72] netlink_unicast+0x449/0x710 [ 2899.752595][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.752595][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.752595][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.752595][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.752595][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.752595][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.752595][ T72] [ 2899.754126][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2899.754126][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.754126][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.754126][ T72] ipv6_find_idev+0x102/0x170 [ 2899.754126][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.754126][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.754126][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.754126][ T72] netlink_unicast+0x449/0x710 [ 2899.754126][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.754126][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.754126][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.754126][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.754126][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.754126][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.754126][ T72] [ 2899.755800][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2899.756078][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2899.756078][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.756078][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.756078][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.756078][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.756078][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.756078][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.756078][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.756078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.756078][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.756078][ T72] netlink_unicast+0x449/0x710 [ 2899.756078][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.756078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.756078][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.756078][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.756078][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.756078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.756078][ T72] [ 2899.758068][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2899.758068][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.758068][ T72] ipv6_find_idev+0x102/0x170 [ 2899.758068][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.758068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.758068][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.758068][ T72] netlink_unicast+0x449/0x710 [ 2899.758068][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.758068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.758068][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.758068][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.758068][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.758068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.758068][ T72] [ 2899.759662][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2899.759662][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.759662][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.759662][ T72] ipv6_find_idev+0x102/0x170 [ 2899.759662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.759662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.759662][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.759662][ T72] netlink_unicast+0x449/0x710 [ 2899.759662][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.759662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.759662][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.759662][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.759662][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.759662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.759662][ T72] [ 2899.761679][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2899.761994][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2899.761994][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.761994][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.761994][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.761994][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.761994][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.761994][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.761994][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.761994][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.761994][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.761994][ T72] netlink_unicast+0x449/0x710 [ 2899.761994][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.761994][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.761994][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.761994][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.761994][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.761994][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.761994][ T72] [ 2899.764174][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2899.764174][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.764174][ T72] ipv6_find_idev+0x102/0x170 [ 2899.764174][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.764174][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.764174][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.764174][ T72] netlink_unicast+0x449/0x710 [ 2899.764174][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.764174][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.764174][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.764174][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.764174][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.764174][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.764174][ T72] [ 2899.765874][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2899.765874][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.765874][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.765874][ T72] ipv6_find_idev+0x102/0x170 [ 2899.765874][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.765874][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.765874][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.765874][ T72] netlink_unicast+0x449/0x710 [ 2899.765874][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.765874][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.765874][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.765874][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.765874][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.765874][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.765874][ T72] [ 2899.767777][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2899.768085][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2899.768085][ T72] netdev_get_by_index+0x5e/0x80 [ 2899.768085][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2899.768085][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2899.768085][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2899.768085][ T72] ipv6_add_addr+0x411/0x2000 [ 2899.768085][ T72] inet6_addr_add+0x30e/0xa40 [ 2899.768085][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2899.768085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.768085][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.768085][ T72] netlink_unicast+0x449/0x710 [ 2899.768085][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.768085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.768085][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.768085][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.768085][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.768085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.768085][ T72] [ 2899.770294][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2899.770294][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2899.770294][ T72] ipv6_find_idev+0x102/0x170 [ 2899.770294][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.770294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.770294][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.770294][ T72] netlink_unicast+0x449/0x710 [ 2899.770294][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.770294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.770294][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.770294][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.770294][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.770294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.770294][ T72] [ 2899.772063][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2899.772063][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2899.772063][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2899.772063][ T72] ipv6_find_idev+0x102/0x170 [ 2899.772063][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2899.772063][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2899.772063][ T72] netlink_rcv_skb+0x130/0x360 [ 2899.772063][ T72] netlink_unicast+0x449/0x710 [ 2899.772063][ T72] netlink_sendmsg+0x723/0xbe0 [ 2899.772063][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2899.772063][ T72] ___sys_sendmsg+0xee/0x170 [ 2899.772063][ T72] __sys_sendmsg+0xcd/0x170 [ 2899.772063][ T72] do_syscall_64+0xc6/0x1e0 [ 2899.772063][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2899.772063][ T72] [ 2909.782859][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2909.783357][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2909.783357][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.783357][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.783357][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.783357][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.783357][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.783357][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.783357][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.783357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.783357][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.783357][ T72] netlink_unicast+0x449/0x710 [ 2909.783357][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.783357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.783357][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.783357][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.783357][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.783357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.783357][ T72] [ 2909.785383][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2909.785383][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.785383][ T72] ipv6_find_idev+0x102/0x170 [ 2909.785383][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.785383][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.785383][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.785383][ T72] netlink_unicast+0x449/0x710 [ 2909.785383][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.785383][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.785383][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.785383][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.785383][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.785383][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.785383][ T72] [ 2909.786921][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2909.786921][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.786921][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.786921][ T72] ipv6_find_idev+0x102/0x170 [ 2909.786921][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.786921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.786921][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.786921][ T72] netlink_unicast+0x449/0x710 [ 2909.786921][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.786921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.786921][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.786921][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.786921][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.786921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.786921][ T72] [ 2909.788660][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2909.788957][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2909.788957][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.788957][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.788957][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.788957][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.788957][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.788957][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.788957][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.788957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.788957][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.788957][ T72] netlink_unicast+0x449/0x710 [ 2909.788957][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.788957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.788957][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.788957][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.788957][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.788957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.788957][ T72] [ 2909.790940][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2909.790940][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.790940][ T72] ipv6_find_idev+0x102/0x170 [ 2909.790940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.790940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.790940][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.790940][ T72] netlink_unicast+0x449/0x710 [ 2909.790940][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.790940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.790940][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.790940][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.790940][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.790940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.790940][ T72] [ 2909.792471][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2909.792471][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.792471][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.792471][ T72] ipv6_find_idev+0x102/0x170 [ 2909.792471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.792471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.792471][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.792471][ T72] netlink_unicast+0x449/0x710 [ 2909.792471][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.792471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.792471][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.792471][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.792471][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.792471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.792471][ T72] [ 2909.794155][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2909.794425][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2909.794425][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.794425][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.794425][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.794425][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.794425][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.794425][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.794425][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.794425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.794425][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.794425][ T72] netlink_unicast+0x449/0x710 [ 2909.794425][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.794425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.794425][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.794425][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.794425][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.794425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.794425][ T72] [ 2909.796401][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2909.796401][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.796401][ T72] ipv6_find_idev+0x102/0x170 [ 2909.796401][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.796401][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.796401][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.796401][ T72] netlink_unicast+0x449/0x710 [ 2909.796401][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.796401][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.796401][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.796401][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.796401][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.796401][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.796401][ T72] [ 2909.797933][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2909.797933][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.797933][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.797933][ T72] ipv6_find_idev+0x102/0x170 [ 2909.797933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.797933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.797933][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.797933][ T72] netlink_unicast+0x449/0x710 [ 2909.797933][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.797933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.797933][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.797933][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.797933][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.797933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.797933][ T72] [ 2909.799608][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2909.800315][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2909.800315][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.800315][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.800315][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.800315][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.800315][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.800315][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.800315][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.800315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.800315][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.800315][ T72] netlink_unicast+0x449/0x710 [ 2909.800315][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.800315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.800315][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.800315][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.800315][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.800315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.800315][ T72] [ 2909.802290][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2909.802290][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.802290][ T72] ipv6_find_idev+0x102/0x170 [ 2909.802290][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.802290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.802290][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.802290][ T72] netlink_unicast+0x449/0x710 [ 2909.802290][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.802290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.802290][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.802290][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.802290][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.802290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.802290][ T72] [ 2909.803815][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2909.803815][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.803815][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.803815][ T72] ipv6_find_idev+0x102/0x170 [ 2909.803815][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.803815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.803815][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.803815][ T72] netlink_unicast+0x449/0x710 [ 2909.803815][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.803815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.803815][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.803815][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.803815][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.803815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.803815][ T72] [ 2909.805544][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2909.805859][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2909.805859][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.805859][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.805859][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.805859][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.805859][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.805859][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.805859][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.805859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.805859][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.805859][ T72] netlink_unicast+0x449/0x710 [ 2909.805859][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.805859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.805859][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.805859][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.805859][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.805859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.805859][ T72] [ 2909.807862][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2909.807862][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.807862][ T72] ipv6_find_idev+0x102/0x170 [ 2909.807862][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.807862][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.807862][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.807862][ T72] netlink_unicast+0x449/0x710 [ 2909.807862][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.807862][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.807862][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.807862][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.807862][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.807862][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.807862][ T72] [ 2909.809385][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2909.809385][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.809385][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.809385][ T72] ipv6_find_idev+0x102/0x170 [ 2909.809385][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.809385][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.809385][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.809385][ T72] netlink_unicast+0x449/0x710 [ 2909.809385][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.809385][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.809385][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.809385][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.809385][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.809385][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.809385][ T72] [ 2909.811097][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2909.811427][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2909.811427][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.811427][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.811427][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.811427][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.811427][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.811427][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.811427][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.811427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.811427][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.811427][ T72] netlink_unicast+0x449/0x710 [ 2909.811427][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.811427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.811427][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.811427][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.811427][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.811427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.811427][ T72] [ 2909.813503][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2909.813503][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.813503][ T72] ipv6_find_idev+0x102/0x170 [ 2909.813503][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.813503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.813503][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.813503][ T72] netlink_unicast+0x449/0x710 [ 2909.813503][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.813503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.813503][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.813503][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.813503][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.813503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.813503][ T72] [ 2909.815210][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2909.815210][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.815210][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.815210][ T72] ipv6_find_idev+0x102/0x170 [ 2909.815210][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.815210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.815210][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.815210][ T72] netlink_unicast+0x449/0x710 [ 2909.815210][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.815210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.815210][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.815210][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.815210][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.815210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.815210][ T72] [ 2909.817105][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2909.817424][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2909.817424][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.817424][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.817424][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.817424][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.817424][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.817424][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.817424][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.817424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.817424][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.817424][ T72] netlink_unicast+0x449/0x710 [ 2909.817424][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.817424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.817424][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.817424][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.817424][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.817424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.817424][ T72] [ 2909.819650][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2909.819650][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.819650][ T72] ipv6_find_idev+0x102/0x170 [ 2909.819650][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.819650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.819650][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.819650][ T72] netlink_unicast+0x449/0x710 [ 2909.819650][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.819650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.819650][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.819650][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.819650][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.819650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.819650][ T72] [ 2909.821367][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2909.821367][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.821367][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.821367][ T72] ipv6_find_idev+0x102/0x170 [ 2909.821367][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.821367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.821367][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.821367][ T72] netlink_unicast+0x449/0x710 [ 2909.821367][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.821367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.821367][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.821367][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.821367][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.821367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.821367][ T72] [ 2909.823263][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2909.823588][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2909.823588][ T72] netdev_get_by_index+0x5e/0x80 [ 2909.823588][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2909.823588][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2909.823588][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2909.823588][ T72] ipv6_add_addr+0x411/0x2000 [ 2909.823588][ T72] inet6_addr_add+0x30e/0xa40 [ 2909.823588][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2909.823588][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.823588][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.823588][ T72] netlink_unicast+0x449/0x710 [ 2909.823588][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.823588][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.823588][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.823588][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.823588][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.823588][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.823588][ T72] [ 2909.825766][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2909.825766][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2909.825766][ T72] ipv6_find_idev+0x102/0x170 [ 2909.825766][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.825766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.825766][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.825766][ T72] netlink_unicast+0x449/0x710 [ 2909.825766][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.825766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.825766][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.825766][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.825766][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.825766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.825766][ T72] [ 2909.827486][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2909.827486][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2909.827486][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2909.827486][ T72] ipv6_find_idev+0x102/0x170 [ 2909.827486][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2909.827486][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2909.827486][ T72] netlink_rcv_skb+0x130/0x360 [ 2909.827486][ T72] netlink_unicast+0x449/0x710 [ 2909.827486][ T72] netlink_sendmsg+0x723/0xbe0 [ 2909.827486][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2909.827486][ T72] ___sys_sendmsg+0xee/0x170 [ 2909.827486][ T72] __sys_sendmsg+0xcd/0x170 [ 2909.827486][ T72] do_syscall_64+0xc6/0x1e0 [ 2909.827486][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2909.827486][ T72] [ 2920.070879][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2920.071367][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2920.071367][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.071367][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.071367][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.071367][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.071367][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.071367][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.071367][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.071367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.071367][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.071367][ T72] netlink_unicast+0x449/0x710 [ 2920.071367][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.071367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.071367][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.071367][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.071367][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.071367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.071367][ T72] [ 2920.073399][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2920.073399][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.073399][ T72] ipv6_find_idev+0x102/0x170 [ 2920.073399][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.073399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.073399][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.073399][ T72] netlink_unicast+0x449/0x710 [ 2920.073399][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.073399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.073399][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.073399][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.073399][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.073399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.073399][ T72] [ 2920.074934][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2920.074934][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.074934][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.074934][ T72] ipv6_find_idev+0x102/0x170 [ 2920.074934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.074934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.074934][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.074934][ T72] netlink_unicast+0x449/0x710 [ 2920.074934][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.074934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.074934][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.074934][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.074934][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.074934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.074934][ T72] [ 2920.076637][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2920.076934][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2920.076934][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.076934][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.076934][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.076934][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.076934][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.076934][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.076934][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.076934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.076934][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.076934][ T72] netlink_unicast+0x449/0x710 [ 2920.076934][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.076934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.076934][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.076934][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.076934][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.076934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.076934][ T72] [ 2920.078928][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2920.078928][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.078928][ T72] ipv6_find_idev+0x102/0x170 [ 2920.078928][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.078928][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.078928][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.078928][ T72] netlink_unicast+0x449/0x710 [ 2920.078928][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.078928][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.078928][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.078928][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.078928][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.078928][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.078928][ T72] [ 2920.080467][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2920.080467][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.080467][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.080467][ T72] ipv6_find_idev+0x102/0x170 [ 2920.080467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.080467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.080467][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.080467][ T72] netlink_unicast+0x449/0x710 [ 2920.080467][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.080467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.080467][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.080467][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.080467][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.080467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.080467][ T72] [ 2920.082145][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2920.082418][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2920.082418][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.082418][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.082418][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.082418][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.082418][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.082418][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.082418][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.082418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.082418][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.082418][ T72] netlink_unicast+0x449/0x710 [ 2920.082418][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.082418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.082418][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.082418][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.082418][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.082418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.082418][ T72] [ 2920.084404][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2920.084404][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.084404][ T72] ipv6_find_idev+0x102/0x170 [ 2920.084404][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.084404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.084404][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.084404][ T72] netlink_unicast+0x449/0x710 [ 2920.084404][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.084404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.084404][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.084404][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.084404][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.084404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.084404][ T72] [ 2920.085935][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2920.085935][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.085935][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.085935][ T72] ipv6_find_idev+0x102/0x170 [ 2920.085935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.085935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.085935][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.085935][ T72] netlink_unicast+0x449/0x710 [ 2920.085935][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.085935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.085935][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.085935][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.085935][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.085935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.085935][ T72] [ 2920.087620][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2920.088329][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2920.088329][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.088329][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.088329][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.088329][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.088329][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.088329][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.088329][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.088329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.088329][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.088329][ T72] netlink_unicast+0x449/0x710 [ 2920.088329][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.088329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.088329][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.088329][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.088329][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.088329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.088329][ T72] [ 2920.090315][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2920.090315][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.090315][ T72] ipv6_find_idev+0x102/0x170 [ 2920.090315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.090315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.090315][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.090315][ T72] netlink_unicast+0x449/0x710 [ 2920.090315][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.090315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.090315][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.090315][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.090315][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.090315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.090315][ T72] [ 2920.091850][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2920.091850][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.091850][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.091850][ T72] ipv6_find_idev+0x102/0x170 [ 2920.091850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.091850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.091850][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.091850][ T72] netlink_unicast+0x449/0x710 [ 2920.091850][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.091850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.091850][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.091850][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.091850][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.091850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.091850][ T72] [ 2920.093572][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2920.093889][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2920.093889][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.093889][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.093889][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.093889][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.093889][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.093889][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.093889][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.093889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.093889][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.093889][ T72] netlink_unicast+0x449/0x710 [ 2920.093889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.093889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.093889][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.093889][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.093889][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.093889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.093889][ T72] [ 2920.095873][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2920.095873][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.095873][ T72] ipv6_find_idev+0x102/0x170 [ 2920.095873][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.095873][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.095873][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.095873][ T72] netlink_unicast+0x449/0x710 [ 2920.095873][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.095873][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.095873][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.095873][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.095873][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.095873][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.095873][ T72] [ 2920.097425][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2920.097425][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.097425][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.097425][ T72] ipv6_find_idev+0x102/0x170 [ 2920.097425][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.097425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.097425][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.097425][ T72] netlink_unicast+0x449/0x710 [ 2920.097425][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.097425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.097425][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.097425][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.097425][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.097425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.097425][ T72] [ 2920.099148][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2920.099459][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2920.099459][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.099459][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.099459][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.099459][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.099459][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.099459][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.099459][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.099459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.099459][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.099459][ T72] netlink_unicast+0x449/0x710 [ 2920.099459][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.099459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.099459][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.099459][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.099459][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.099459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.099459][ T72] [ 2920.101509][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2920.101509][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.101509][ T72] ipv6_find_idev+0x102/0x170 [ 2920.101509][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.101509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.101509][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.101509][ T72] netlink_unicast+0x449/0x710 [ 2920.101509][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.101509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.101509][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.101509][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.101509][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.101509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.101509][ T72] [ 2920.103272][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2920.103272][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.103272][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.103272][ T72] ipv6_find_idev+0x102/0x170 [ 2920.103272][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.103272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.103272][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.103272][ T72] netlink_unicast+0x449/0x710 [ 2920.103272][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.103272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.103272][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.103272][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.103272][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.103272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.103272][ T72] [ 2920.105165][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2920.105470][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2920.105470][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.105470][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.105470][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.105470][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.105470][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.105470][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.105470][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.105470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.105470][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.105470][ T72] netlink_unicast+0x449/0x710 [ 2920.105470][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.105470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.105470][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.105470][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.105470][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.105470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.105470][ T72] [ 2920.107646][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2920.107646][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.107646][ T72] ipv6_find_idev+0x102/0x170 [ 2920.107646][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.107646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.107646][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.107646][ T72] netlink_unicast+0x449/0x710 [ 2920.107646][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.107646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.107646][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.107646][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.107646][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.107646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.107646][ T72] [ 2920.109348][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2920.109348][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.109348][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.109348][ T72] ipv6_find_idev+0x102/0x170 [ 2920.109348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.109348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.109348][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.109348][ T72] netlink_unicast+0x449/0x710 [ 2920.109348][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.109348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.109348][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.109348][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.109348][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.109348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.109348][ T72] [ 2920.111235][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2920.111549][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2920.111549][ T72] netdev_get_by_index+0x5e/0x80 [ 2920.111549][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2920.111549][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2920.111549][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2920.111549][ T72] ipv6_add_addr+0x411/0x2000 [ 2920.111549][ T72] inet6_addr_add+0x30e/0xa40 [ 2920.111549][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2920.111549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.111549][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.111549][ T72] netlink_unicast+0x449/0x710 [ 2920.111549][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.111549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.111549][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.111549][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.111549][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.111549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.111549][ T72] [ 2920.113719][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2920.113719][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2920.113719][ T72] ipv6_find_idev+0x102/0x170 [ 2920.113719][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.113719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.113719][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.113719][ T72] netlink_unicast+0x449/0x710 [ 2920.113719][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.113719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.113719][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.113719][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.113719][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.113719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.113719][ T72] [ 2920.115487][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2920.115487][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2920.115487][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2920.115487][ T72] ipv6_find_idev+0x102/0x170 [ 2920.115487][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2920.115487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2920.115487][ T72] netlink_rcv_skb+0x130/0x360 [ 2920.115487][ T72] netlink_unicast+0x449/0x710 [ 2920.115487][ T72] netlink_sendmsg+0x723/0xbe0 [ 2920.115487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2920.115487][ T72] ___sys_sendmsg+0xee/0x170 [ 2920.115487][ T72] __sys_sendmsg+0xcd/0x170 [ 2920.115487][ T72] do_syscall_64+0xc6/0x1e0 [ 2920.115487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2920.115487][ T72] [ 2930.358870][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2930.359355][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2930.359355][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.359355][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.359355][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.359355][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.359355][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.359355][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.359355][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.359355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.359355][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.359355][ T72] netlink_unicast+0x449/0x710 [ 2930.359355][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.359355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.359355][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.359355][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.359355][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.359355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.359355][ T72] [ 2930.361376][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2930.361376][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.361376][ T72] ipv6_find_idev+0x102/0x170 [ 2930.361376][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.361376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.361376][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.361376][ T72] netlink_unicast+0x449/0x710 [ 2930.361376][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.361376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.361376][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.361376][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.361376][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.361376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.361376][ T72] [ 2930.362925][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2930.362925][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.362925][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.362925][ T72] ipv6_find_idev+0x102/0x170 [ 2930.362925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.362925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.362925][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.362925][ T72] netlink_unicast+0x449/0x710 [ 2930.362925][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.362925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.362925][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.362925][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.362925][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.362925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.362925][ T72] [ 2930.364674][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2930.364979][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2930.364979][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.364979][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.364979][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.364979][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.364979][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.364979][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.364979][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.364979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.364979][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.364979][ T72] netlink_unicast+0x449/0x710 [ 2930.364979][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.364979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.364979][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.364979][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.364979][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.364979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.364979][ T72] [ 2930.366975][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2930.366975][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.366975][ T72] ipv6_find_idev+0x102/0x170 [ 2930.366975][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.366975][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.366975][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.366975][ T72] netlink_unicast+0x449/0x710 [ 2930.366975][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.366975][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.366975][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.366975][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.366975][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.366975][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.366975][ T72] [ 2930.368554][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2930.368554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.368554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.368554][ T72] ipv6_find_idev+0x102/0x170 [ 2930.368554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.368554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.368554][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.368554][ T72] netlink_unicast+0x449/0x710 [ 2930.368554][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.368554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.368554][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.368554][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.368554][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.368554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.368554][ T72] [ 2930.370294][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2930.370562][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2930.370562][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.370562][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.370562][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.370562][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.370562][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.370562][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.370562][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.370562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.370562][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.370562][ T72] netlink_unicast+0x449/0x710 [ 2930.370562][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.370562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.370562][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.370562][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.370562][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.370562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.370562][ T72] [ 2930.373102][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2930.373102][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.373102][ T72] ipv6_find_idev+0x102/0x170 [ 2930.373102][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.373102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.373102][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.373102][ T72] netlink_unicast+0x449/0x710 [ 2930.373102][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.373102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.373102][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.373102][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.373102][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.373102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.373102][ T72] [ 2930.374630][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2930.374630][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.374630][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.374630][ T72] ipv6_find_idev+0x102/0x170 [ 2930.374630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.374630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.374630][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.374630][ T72] netlink_unicast+0x449/0x710 [ 2930.374630][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.374630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.374630][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.374630][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.374630][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.374630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.374630][ T72] [ 2930.376325][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2930.376599][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2930.376599][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.376599][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.376599][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.376599][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.376599][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.376599][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.376599][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.376599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.376599][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.376599][ T72] netlink_unicast+0x449/0x710 [ 2930.376599][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.376599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.376599][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.376599][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.376599][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.376599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.376599][ T72] [ 2930.378631][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2930.378631][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.378631][ T72] ipv6_find_idev+0x102/0x170 [ 2930.378631][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.378631][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.378631][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.378631][ T72] netlink_unicast+0x449/0x710 [ 2930.378631][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.378631][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.378631][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.378631][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.378631][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.378631][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.378631][ T72] [ 2930.380177][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2930.380177][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.380177][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.380177][ T72] ipv6_find_idev+0x102/0x170 [ 2930.380177][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.380177][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.380177][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.380177][ T72] netlink_unicast+0x449/0x710 [ 2930.380177][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.380177][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.380177][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.380177][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.380177][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.380177][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.380177][ T72] [ 2930.382282][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2930.382889][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2930.382889][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.382889][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.382889][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.382889][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.382889][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.382889][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.382889][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.382889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.382889][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.382889][ T72] netlink_unicast+0x449/0x710 [ 2930.382889][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.382889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.382889][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.382889][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.382889][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.382889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.382889][ T72] [ 2930.384871][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2930.384871][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.384871][ T72] ipv6_find_idev+0x102/0x170 [ 2930.384871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.384871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.384871][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.384871][ T72] netlink_unicast+0x449/0x710 [ 2930.384871][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.384871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.384871][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.384871][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.384871][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.384871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.384871][ T72] [ 2930.386399][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2930.386399][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.386399][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.386399][ T72] ipv6_find_idev+0x102/0x170 [ 2930.386399][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.386399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.386399][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.386399][ T72] netlink_unicast+0x449/0x710 [ 2930.386399][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.386399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.386399][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.386399][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.386399][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.386399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.386399][ T72] [ 2930.388085][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2930.388352][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2930.388352][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.388352][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.388352][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.388352][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.388352][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.388352][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.388352][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.388352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.388352][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.388352][ T72] netlink_unicast+0x449/0x710 [ 2930.388352][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.388352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.388352][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.388352][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.388352][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.388352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.388352][ T72] [ 2930.390742][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2930.390742][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.390742][ T72] ipv6_find_idev+0x102/0x170 [ 2930.390742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.390742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.390742][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.390742][ T72] netlink_unicast+0x449/0x710 [ 2930.390742][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.390742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.390742][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.390742][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.390742][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.390742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.390742][ T72] [ 2930.392331][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2930.392331][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.392331][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.392331][ T72] ipv6_find_idev+0x102/0x170 [ 2930.392331][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.392331][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.392331][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.392331][ T72] netlink_unicast+0x449/0x710 [ 2930.392331][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.392331][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.392331][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.392331][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.392331][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.392331][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.392331][ T72] [ 2930.394354][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2930.394662][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2930.394662][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.394662][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.394662][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.394662][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.394662][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.394662][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.394662][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.394662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.394662][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.394662][ T72] netlink_unicast+0x449/0x710 [ 2930.394662][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.394662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.394662][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.394662][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.394662][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.394662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.394662][ T72] [ 2930.396839][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2930.396839][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.396839][ T72] ipv6_find_idev+0x102/0x170 [ 2930.396839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.396839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.396839][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.396839][ T72] netlink_unicast+0x449/0x710 [ 2930.396839][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.396839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.396839][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.396839][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.396839][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.396839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.396839][ T72] [ 2930.398562][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2930.398562][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.398562][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.398562][ T72] ipv6_find_idev+0x102/0x170 [ 2930.398562][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.398562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.398562][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.398562][ T72] netlink_unicast+0x449/0x710 [ 2930.398562][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.398562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.398562][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.398562][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.398562][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.398562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.398562][ T72] [ 2930.400470][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2930.400782][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2930.400782][ T72] netdev_get_by_index+0x5e/0x80 [ 2930.400782][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2930.400782][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2930.400782][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2930.400782][ T72] ipv6_add_addr+0x411/0x2000 [ 2930.400782][ T72] inet6_addr_add+0x30e/0xa40 [ 2930.400782][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2930.400782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.400782][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.400782][ T72] netlink_unicast+0x449/0x710 [ 2930.400782][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.400782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.400782][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.400782][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.400782][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.400782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.400782][ T72] [ 2930.402995][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2930.402995][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2930.402995][ T72] ipv6_find_idev+0x102/0x170 [ 2930.402995][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.402995][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.402995][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.402995][ T72] netlink_unicast+0x449/0x710 [ 2930.402995][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.402995][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.402995][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.402995][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.402995][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.402995][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.402995][ T72] [ 2930.404821][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2930.404821][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2930.404821][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2930.404821][ T72] ipv6_find_idev+0x102/0x170 [ 2930.404821][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2930.404821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2930.404821][ T72] netlink_rcv_skb+0x130/0x360 [ 2930.404821][ T72] netlink_unicast+0x449/0x710 [ 2930.404821][ T72] netlink_sendmsg+0x723/0xbe0 [ 2930.404821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2930.404821][ T72] ___sys_sendmsg+0xee/0x170 [ 2930.404821][ T72] __sys_sendmsg+0xcd/0x170 [ 2930.404821][ T72] do_syscall_64+0xc6/0x1e0 [ 2930.404821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2930.404821][ T72] [ 2940.638792][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2940.639269][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2940.639269][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.639269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.639269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.639269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.639269][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.639269][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.639269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.639269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.639269][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.639269][ T72] netlink_unicast+0x449/0x710 [ 2940.639269][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.639269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.639269][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.639269][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.639269][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.639269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.639269][ T72] [ 2940.641638][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2940.641638][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.641638][ T72] ipv6_find_idev+0x102/0x170 [ 2940.641638][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.641638][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.641638][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.641638][ T72] netlink_unicast+0x449/0x710 [ 2940.641638][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.641638][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.641638][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.641638][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.641638][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.641638][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.641638][ T72] [ 2940.643151][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2940.643151][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.643151][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.643151][ T72] ipv6_find_idev+0x102/0x170 [ 2940.643151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.643151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.643151][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.643151][ T72] netlink_unicast+0x449/0x710 [ 2940.643151][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.643151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.643151][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.643151][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.643151][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.643151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.643151][ T72] [ 2940.644814][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2940.645077][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2940.645077][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.645077][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.645077][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.645077][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.645077][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.645077][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.645077][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.645077][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.645077][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.645077][ T72] netlink_unicast+0x449/0x710 [ 2940.645077][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.645077][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.645077][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.645077][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.645077][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.645077][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.645077][ T72] [ 2940.647038][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2940.647038][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.647038][ T72] ipv6_find_idev+0x102/0x170 [ 2940.647038][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.647038][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.647038][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.647038][ T72] netlink_unicast+0x449/0x710 [ 2940.647038][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.647038][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.647038][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.647038][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.647038][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.647038][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.647038][ T72] [ 2940.648561][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2940.648561][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.648561][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.648561][ T72] ipv6_find_idev+0x102/0x170 [ 2940.648561][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.648561][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.648561][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.648561][ T72] netlink_unicast+0x449/0x710 [ 2940.648561][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.648561][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.648561][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.648561][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.648561][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.648561][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.648561][ T72] [ 2940.650211][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2940.650474][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2940.650474][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.650474][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.650474][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.650474][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.650474][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.650474][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.650474][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.650474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.650474][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.650474][ T72] netlink_unicast+0x449/0x710 [ 2940.650474][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.650474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.650474][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.650474][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.650474][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.650474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.650474][ T72] [ 2940.652448][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2940.652448][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.652448][ T72] ipv6_find_idev+0x102/0x170 [ 2940.652448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.652448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.652448][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.652448][ T72] netlink_unicast+0x449/0x710 [ 2940.652448][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.652448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.652448][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.652448][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.652448][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.652448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.652448][ T72] [ 2940.653967][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2940.653967][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.653967][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.653967][ T72] ipv6_find_idev+0x102/0x170 [ 2940.653967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.653967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.653967][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.653967][ T72] netlink_unicast+0x449/0x710 [ 2940.653967][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.653967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.653967][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.653967][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.653967][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.653967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.653967][ T72] [ 2940.655634][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2940.655910][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2940.655910][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.655910][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.655910][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.655910][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.655910][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.655910][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.655910][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.655910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.655910][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.655910][ T72] netlink_unicast+0x449/0x710 [ 2940.655910][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.655910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.655910][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.655910][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.655910][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.655910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.655910][ T72] [ 2940.657891][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2940.657891][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.657891][ T72] ipv6_find_idev+0x102/0x170 [ 2940.657891][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.657891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.657891][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.657891][ T72] netlink_unicast+0x449/0x710 [ 2940.657891][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.657891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.657891][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.657891][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.657891][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.657891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.657891][ T72] [ 2940.659416][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2940.659416][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.659416][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.659416][ T72] ipv6_find_idev+0x102/0x170 [ 2940.659416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.659416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.659416][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.659416][ T72] netlink_unicast+0x449/0x710 [ 2940.659416][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.659416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.659416][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.659416][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.659416][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.659416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.659416][ T72] [ 2940.661079][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2940.661340][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2940.661340][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.661340][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.661340][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.661340][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.661340][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.661340][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.661340][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.661340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.661340][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.661340][ T72] netlink_unicast+0x449/0x710 [ 2940.661340][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.661340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.661340][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.661340][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.661340][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.661340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.661340][ T72] [ 2940.663315][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2940.663315][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.663315][ T72] ipv6_find_idev+0x102/0x170 [ 2940.663315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.663315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.663315][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.663315][ T72] netlink_unicast+0x449/0x710 [ 2940.663315][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.663315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.663315][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.663315][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.663315][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.663315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.663315][ T72] [ 2940.664912][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2940.664912][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.664912][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.664912][ T72] ipv6_find_idev+0x102/0x170 [ 2940.664912][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.664912][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.664912][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.664912][ T72] netlink_unicast+0x449/0x710 [ 2940.664912][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.664912][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.664912][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.664912][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.664912][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.664912][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.664912][ T72] [ 2940.666820][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2940.667084][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2940.667084][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.667084][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.667084][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.667084][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.667084][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.667084][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.667084][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.667084][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.667084][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.667084][ T72] netlink_unicast+0x449/0x710 [ 2940.667084][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.667084][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.667084][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.667084][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.667084][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.667084][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.667084][ T72] [ 2940.669371][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2940.669371][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.669371][ T72] ipv6_find_idev+0x102/0x170 [ 2940.669371][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.669371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.669371][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.669371][ T72] netlink_unicast+0x449/0x710 [ 2940.669371][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.669371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.669371][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.669371][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.669371][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.669371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.669371][ T72] [ 2940.671072][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2940.671072][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.671072][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.671072][ T72] ipv6_find_idev+0x102/0x170 [ 2940.671072][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.671072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.671072][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.671072][ T72] netlink_unicast+0x449/0x710 [ 2940.671072][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.671072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.671072][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.671072][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.671072][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.671072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.671072][ T72] [ 2940.672951][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2940.673209][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2940.673209][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.673209][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.673209][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.673209][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.673209][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.673209][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.673209][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.673209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.673209][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.673209][ T72] netlink_unicast+0x449/0x710 [ 2940.673209][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.673209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.673209][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.673209][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.673209][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.673209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.673209][ T72] [ 2940.675504][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2940.675504][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.675504][ T72] ipv6_find_idev+0x102/0x170 [ 2940.675504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.675504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.675504][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.675504][ T72] netlink_unicast+0x449/0x710 [ 2940.675504][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.675504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.675504][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.675504][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.675504][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.675504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.675504][ T72] [ 2940.677194][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2940.677194][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.677194][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.677194][ T72] ipv6_find_idev+0x102/0x170 [ 2940.677194][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.677194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.677194][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.677194][ T72] netlink_unicast+0x449/0x710 [ 2940.677194][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.677194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.677194][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.677194][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.677194][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.677194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.677194][ T72] [ 2940.679141][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2940.679414][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2940.679414][ T72] netdev_get_by_index+0x5e/0x80 [ 2940.679414][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2940.679414][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2940.679414][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2940.679414][ T72] ipv6_add_addr+0x411/0x2000 [ 2940.679414][ T72] inet6_addr_add+0x30e/0xa40 [ 2940.679414][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2940.679414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.679414][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.679414][ T72] netlink_unicast+0x449/0x710 [ 2940.679414][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.679414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.679414][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.679414][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.679414][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.679414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.679414][ T72] [ 2940.681618][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2940.681618][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2940.681618][ T72] ipv6_find_idev+0x102/0x170 [ 2940.681618][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.681618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.681618][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.681618][ T72] netlink_unicast+0x449/0x710 [ 2940.681618][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.681618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.681618][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.681618][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.681618][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.681618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.681618][ T72] [ 2940.683311][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2940.683311][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2940.683311][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2940.683311][ T72] ipv6_find_idev+0x102/0x170 [ 2940.683311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2940.683311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2940.683311][ T72] netlink_rcv_skb+0x130/0x360 [ 2940.683311][ T72] netlink_unicast+0x449/0x710 [ 2940.683311][ T72] netlink_sendmsg+0x723/0xbe0 [ 2940.683311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2940.683311][ T72] ___sys_sendmsg+0xee/0x170 [ 2940.683311][ T72] __sys_sendmsg+0xcd/0x170 [ 2940.683311][ T72] do_syscall_64+0xc6/0x1e0 [ 2940.683311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2940.683311][ T72] [ 2950.918848][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2950.919329][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2950.919329][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.919329][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.919329][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.919329][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.919329][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.919329][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.919329][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.919329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.919329][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.919329][ T72] netlink_unicast+0x449/0x710 [ 2950.919329][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.919329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.919329][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.919329][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.919329][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.919329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.919329][ T72] [ 2950.921352][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2950.921352][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.921352][ T72] ipv6_find_idev+0x102/0x170 [ 2950.921352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.921352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.921352][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.921352][ T72] netlink_unicast+0x449/0x710 [ 2950.921352][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.921352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.921352][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.921352][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.921352][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.921352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.921352][ T72] [ 2950.922885][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2950.922885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.922885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.922885][ T72] ipv6_find_idev+0x102/0x170 [ 2950.922885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.922885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.922885][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.922885][ T72] netlink_unicast+0x449/0x710 [ 2950.922885][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.922885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.922885][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.922885][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.922885][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.922885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.922885][ T72] [ 2950.924576][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2950.924865][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2950.924865][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.924865][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.924865][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.924865][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.924865][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.924865][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.924865][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.924865][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.924865][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.924865][ T72] netlink_unicast+0x449/0x710 [ 2950.924865][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.924865][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.924865][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.924865][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.924865][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.924865][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.924865][ T72] [ 2950.926856][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2950.926856][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.926856][ T72] ipv6_find_idev+0x102/0x170 [ 2950.926856][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.926856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.926856][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.926856][ T72] netlink_unicast+0x449/0x710 [ 2950.926856][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.926856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.926856][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.926856][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.926856][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.926856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.926856][ T72] [ 2950.928417][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2950.928417][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.928417][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.928417][ T72] ipv6_find_idev+0x102/0x170 [ 2950.928417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.928417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.928417][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.928417][ T72] netlink_unicast+0x449/0x710 [ 2950.928417][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.928417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.928417][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.928417][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.928417][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.928417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.928417][ T72] [ 2950.930091][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2950.930360][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2950.930360][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.930360][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.930360][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.930360][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.930360][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.930360][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.930360][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.930360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.930360][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.930360][ T72] netlink_unicast+0x449/0x710 [ 2950.930360][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.930360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.930360][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.930360][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.930360][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.930360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.930360][ T72] [ 2950.932343][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2950.932343][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.932343][ T72] ipv6_find_idev+0x102/0x170 [ 2950.932343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.932343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.932343][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.932343][ T72] netlink_unicast+0x449/0x710 [ 2950.932343][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.932343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.932343][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.932343][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.932343][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.932343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.932343][ T72] [ 2950.933875][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2950.933875][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.933875][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.933875][ T72] ipv6_find_idev+0x102/0x170 [ 2950.933875][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.933875][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.933875][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.933875][ T72] netlink_unicast+0x449/0x710 [ 2950.933875][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.933875][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.933875][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.933875][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.933875][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.933875][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.933875][ T72] [ 2950.935546][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2950.936251][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2950.936251][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.936251][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.936251][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.936251][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.936251][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.936251][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.936251][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.936251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.936251][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.936251][ T72] netlink_unicast+0x449/0x710 [ 2950.936251][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.936251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.936251][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.936251][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.936251][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.936251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.936251][ T72] [ 2950.938234][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2950.938234][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.938234][ T72] ipv6_find_idev+0x102/0x170 [ 2950.938234][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.938234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.938234][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.938234][ T72] netlink_unicast+0x449/0x710 [ 2950.938234][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.938234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.938234][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.938234][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.938234][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.938234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.938234][ T72] [ 2950.939772][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2950.939772][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.939772][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.939772][ T72] ipv6_find_idev+0x102/0x170 [ 2950.939772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.939772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.939772][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.939772][ T72] netlink_unicast+0x449/0x710 [ 2950.939772][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.939772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.939772][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.939772][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.939772][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.939772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.939772][ T72] [ 2950.941517][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2950.941842][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2950.941842][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.941842][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.941842][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.941842][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.941842][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.941842][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.941842][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.941842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.941842][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.941842][ T72] netlink_unicast+0x449/0x710 [ 2950.941842][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.941842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.941842][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.941842][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.941842][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.941842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.941842][ T72] [ 2950.943831][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2950.943831][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.943831][ T72] ipv6_find_idev+0x102/0x170 [ 2950.943831][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.943831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.943831][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.943831][ T72] netlink_unicast+0x449/0x710 [ 2950.943831][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.943831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.943831][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.943831][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.943831][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.943831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.943831][ T72] [ 2950.945358][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2950.945358][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.945358][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.945358][ T72] ipv6_find_idev+0x102/0x170 [ 2950.945358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.945358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.945358][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.945358][ T72] netlink_unicast+0x449/0x710 [ 2950.945358][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.945358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.945358][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.945358][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.945358][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.945358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.945358][ T72] [ 2950.947078][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2950.947409][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2950.947409][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.947409][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.947409][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.947409][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.947409][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.947409][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.947409][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.947409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.947409][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.947409][ T72] netlink_unicast+0x449/0x710 [ 2950.947409][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.947409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.947409][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.947409][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.947409][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.947409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.947409][ T72] [ 2950.949448][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2950.949448][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.949448][ T72] ipv6_find_idev+0x102/0x170 [ 2950.949448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.949448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.949448][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.949448][ T72] netlink_unicast+0x449/0x710 [ 2950.949448][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.949448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.949448][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.949448][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.949448][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.949448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.949448][ T72] [ 2950.951209][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2950.951209][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.951209][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.951209][ T72] ipv6_find_idev+0x102/0x170 [ 2950.951209][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.951209][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.951209][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.951209][ T72] netlink_unicast+0x449/0x710 [ 2950.951209][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.951209][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.951209][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.951209][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.951209][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.951209][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.951209][ T72] [ 2950.953131][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2950.953451][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2950.953451][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.953451][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.953451][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.953451][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.953451][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.953451][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.953451][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.953451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.953451][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.953451][ T72] netlink_unicast+0x449/0x710 [ 2950.953451][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.953451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.953451][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.953451][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.953451][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.953451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.953451][ T72] [ 2950.955693][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2950.955693][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.955693][ T72] ipv6_find_idev+0x102/0x170 [ 2950.955693][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.955693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.955693][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.955693][ T72] netlink_unicast+0x449/0x710 [ 2950.955693][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.955693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.955693][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.955693][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.955693][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.955693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.955693][ T72] [ 2950.957413][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2950.957413][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.957413][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.957413][ T72] ipv6_find_idev+0x102/0x170 [ 2950.957413][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.957413][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.957413][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.957413][ T72] netlink_unicast+0x449/0x710 [ 2950.957413][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.957413][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.957413][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.957413][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.957413][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.957413][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.957413][ T72] [ 2950.959304][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2950.959633][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2950.959633][ T72] netdev_get_by_index+0x5e/0x80 [ 2950.959633][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2950.959633][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2950.959633][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2950.959633][ T72] ipv6_add_addr+0x411/0x2000 [ 2950.959633][ T72] inet6_addr_add+0x30e/0xa40 [ 2950.959633][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2950.959633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.959633][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.959633][ T72] netlink_unicast+0x449/0x710 [ 2950.959633][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.959633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.959633][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.959633][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.959633][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.959633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.959633][ T72] [ 2950.961812][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2950.961812][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2950.961812][ T72] ipv6_find_idev+0x102/0x170 [ 2950.961812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.961812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.961812][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.961812][ T72] netlink_unicast+0x449/0x710 [ 2950.961812][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.961812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.961812][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.961812][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.961812][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.961812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.961812][ T72] [ 2950.963618][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2950.963618][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2950.963618][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2950.963618][ T72] ipv6_find_idev+0x102/0x170 [ 2950.963618][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2950.963618][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2950.963618][ T72] netlink_rcv_skb+0x130/0x360 [ 2950.963618][ T72] netlink_unicast+0x449/0x710 [ 2950.963618][ T72] netlink_sendmsg+0x723/0xbe0 [ 2950.963618][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2950.963618][ T72] ___sys_sendmsg+0xee/0x170 [ 2950.963618][ T72] __sys_sendmsg+0xcd/0x170 [ 2950.963618][ T72] do_syscall_64+0xc6/0x1e0 [ 2950.963618][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2950.963618][ T72] [ 2961.102894][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2961.103294][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2961.103294][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.103294][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.103294][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.103294][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.103294][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.103294][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.103294][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.103294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.103294][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.103294][ T72] netlink_unicast+0x449/0x710 [ 2961.103294][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.103294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.103294][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.103294][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.103294][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.103294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.103294][ T72] [ 2961.105284][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2961.105284][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.105284][ T72] ipv6_find_idev+0x102/0x170 [ 2961.105284][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.105284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.105284][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.105284][ T72] netlink_unicast+0x449/0x710 [ 2961.105284][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.105284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.105284][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.105284][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.105284][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.105284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.105284][ T72] [ 2961.106801][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2961.106801][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.106801][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.106801][ T72] ipv6_find_idev+0x102/0x170 [ 2961.106801][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.106801][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.106801][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.106801][ T72] netlink_unicast+0x449/0x710 [ 2961.106801][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.106801][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.106801][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.106801][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.106801][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.106801][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.106801][ T72] [ 2961.108479][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2961.108753][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2961.108753][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.108753][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.108753][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.108753][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.108753][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.108753][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.108753][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.108753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.108753][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.108753][ T72] netlink_unicast+0x449/0x710 [ 2961.108753][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.108753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.108753][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.108753][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.108753][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.108753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.108753][ T72] [ 2961.110731][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2961.110731][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.110731][ T72] ipv6_find_idev+0x102/0x170 [ 2961.110731][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.110731][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.110731][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.110731][ T72] netlink_unicast+0x449/0x710 [ 2961.110731][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.110731][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.110731][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.110731][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.110731][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.110731][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.110731][ T72] [ 2961.112246][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2961.112246][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.112246][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.112246][ T72] ipv6_find_idev+0x102/0x170 [ 2961.112246][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.112246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.112246][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.112246][ T72] netlink_unicast+0x449/0x710 [ 2961.112246][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.112246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.112246][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.112246][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.112246][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.112246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.112246][ T72] [ 2961.113899][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2961.114171][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2961.114171][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.114171][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.114171][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.114171][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.114171][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.114171][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.114171][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.114171][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.114171][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.114171][ T72] netlink_unicast+0x449/0x710 [ 2961.114171][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.114171][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.114171][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.114171][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.114171][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.114171][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.114171][ T72] [ 2961.116129][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2961.116129][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.116129][ T72] ipv6_find_idev+0x102/0x170 [ 2961.116129][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.116129][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.116129][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.116129][ T72] netlink_unicast+0x449/0x710 [ 2961.116129][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.116129][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.116129][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.116129][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.116129][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.116129][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.116129][ T72] [ 2961.117674][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2961.117674][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.117674][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.117674][ T72] ipv6_find_idev+0x102/0x170 [ 2961.117674][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.117674][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.117674][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.117674][ T72] netlink_unicast+0x449/0x710 [ 2961.117674][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.117674][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.117674][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.117674][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.117674][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.117674][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.117674][ T72] [ 2961.119357][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2961.119619][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2961.119619][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.119619][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.119619][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.119619][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.119619][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.119619][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.119619][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.119619][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.119619][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.119619][ T72] netlink_unicast+0x449/0x710 [ 2961.119619][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.119619][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.119619][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.119619][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.119619][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.119619][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.119619][ T72] [ 2961.121572][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2961.121572][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.121572][ T72] ipv6_find_idev+0x102/0x170 [ 2961.121572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.121572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.121572][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.121572][ T72] netlink_unicast+0x449/0x710 [ 2961.121572][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.121572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.121572][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.121572][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.121572][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.121572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.121572][ T72] [ 2961.123078][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2961.123078][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.123078][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.123078][ T72] ipv6_find_idev+0x102/0x170 [ 2961.123078][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.123078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.123078][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.123078][ T72] netlink_unicast+0x449/0x710 [ 2961.123078][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.123078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.123078][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.123078][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.123078][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.123078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.123078][ T72] [ 2961.125136][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2961.125401][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2961.125401][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.125401][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.125401][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.125401][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.125401][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.125401][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.125401][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.125401][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.125401][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.125401][ T72] netlink_unicast+0x449/0x710 [ 2961.125401][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.125401][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.125401][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.125401][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.125401][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.125401][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.125401][ T72] [ 2961.127404][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2961.127404][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.127404][ T72] ipv6_find_idev+0x102/0x170 [ 2961.127404][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.127404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.127404][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.127404][ T72] netlink_unicast+0x449/0x710 [ 2961.127404][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.127404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.127404][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.127404][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.127404][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.127404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.127404][ T72] [ 2961.128956][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2961.128956][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.128956][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.128956][ T72] ipv6_find_idev+0x102/0x170 [ 2961.128956][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.128956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.128956][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.128956][ T72] netlink_unicast+0x449/0x710 [ 2961.128956][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.128956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.128956][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.128956][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.128956][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.128956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.128956][ T72] [ 2961.130656][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2961.130965][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2961.130965][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.130965][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.130965][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.130965][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.130965][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.130965][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.130965][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.130965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.130965][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.130965][ T72] netlink_unicast+0x449/0x710 [ 2961.130965][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.130965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.130965][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.130965][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.130965][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.130965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.130965][ T72] [ 2961.133071][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2961.133071][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.133071][ T72] ipv6_find_idev+0x102/0x170 [ 2961.133071][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.133071][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.133071][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.133071][ T72] netlink_unicast+0x449/0x710 [ 2961.133071][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.133071][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.133071][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.133071][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.133071][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.133071][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.133071][ T72] [ 2961.134859][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2961.134859][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.134859][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.134859][ T72] ipv6_find_idev+0x102/0x170 [ 2961.134859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.134859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.134859][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.134859][ T72] netlink_unicast+0x449/0x710 [ 2961.134859][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.134859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.134859][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.134859][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.134859][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.134859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.134859][ T72] [ 2961.136774][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2961.137033][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2961.137033][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.137033][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.137033][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.137033][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.137033][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.137033][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.137033][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.137033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.137033][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.137033][ T72] netlink_unicast+0x449/0x710 [ 2961.137033][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.137033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.137033][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.137033][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.137033][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.137033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.137033][ T72] [ 2961.139273][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2961.139273][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.139273][ T72] ipv6_find_idev+0x102/0x170 [ 2961.139273][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.139273][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.139273][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.139273][ T72] netlink_unicast+0x449/0x710 [ 2961.139273][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.139273][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.139273][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.139273][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.139273][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.139273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.139273][ T72] [ 2961.141453][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2961.141453][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.141453][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.141453][ T72] ipv6_find_idev+0x102/0x170 [ 2961.141453][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.141453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.141453][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.141453][ T72] netlink_unicast+0x449/0x710 [ 2961.141453][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.141453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.141453][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.141453][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.141453][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.141453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.141453][ T72] [ 2961.143419][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2961.143689][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2961.143689][ T72] netdev_get_by_index+0x5e/0x80 [ 2961.143689][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2961.143689][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2961.143689][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2961.143689][ T72] ipv6_add_addr+0x411/0x2000 [ 2961.143689][ T72] inet6_addr_add+0x30e/0xa40 [ 2961.143689][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2961.143689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.143689][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.143689][ T72] netlink_unicast+0x449/0x710 [ 2961.143689][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.143689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.143689][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.143689][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.143689][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.143689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.143689][ T72] [ 2961.145893][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2961.145893][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2961.145893][ T72] ipv6_find_idev+0x102/0x170 [ 2961.145893][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.145893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.145893][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.145893][ T72] netlink_unicast+0x449/0x710 [ 2961.145893][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.145893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.145893][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.145893][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.145893][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.145893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.145893][ T72] [ 2961.147594][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2961.147594][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2961.147594][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2961.147594][ T72] ipv6_find_idev+0x102/0x170 [ 2961.147594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2961.147594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2961.147594][ T72] netlink_rcv_skb+0x130/0x360 [ 2961.147594][ T72] netlink_unicast+0x449/0x710 [ 2961.147594][ T72] netlink_sendmsg+0x723/0xbe0 [ 2961.147594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2961.147594][ T72] ___sys_sendmsg+0xee/0x170 [ 2961.147594][ T72] __sys_sendmsg+0xcd/0x170 [ 2961.147594][ T72] do_syscall_64+0xc6/0x1e0 [ 2961.147594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2961.147594][ T72] [ 2971.174930][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2971.175342][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2971.175342][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.175342][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.175342][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.175342][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.175342][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.175342][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.175342][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.175342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.175342][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.175342][ T72] netlink_unicast+0x449/0x710 [ 2971.175342][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.175342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.175342][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.175342][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.175342][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.175342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.175342][ T72] [ 2971.177340][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2971.177340][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.177340][ T72] ipv6_find_idev+0x102/0x170 [ 2971.177340][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.177340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.177340][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.177340][ T72] netlink_unicast+0x449/0x710 [ 2971.177340][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.177340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.177340][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.177340][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.177340][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.177340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.177340][ T72] [ 2971.178862][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2971.178862][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.178862][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.178862][ T72] ipv6_find_idev+0x102/0x170 [ 2971.178862][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.178862][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.178862][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.178862][ T72] netlink_unicast+0x449/0x710 [ 2971.178862][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.178862][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.178862][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.178862][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.178862][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.178862][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.178862][ T72] [ 2971.180583][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2971.180867][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2971.180867][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.180867][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.180867][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.180867][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.180867][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.180867][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.180867][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.180867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.180867][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.180867][ T72] netlink_unicast+0x449/0x710 [ 2971.180867][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.180867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.180867][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.180867][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.180867][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.180867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.180867][ T72] [ 2971.182888][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2971.182888][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.182888][ T72] ipv6_find_idev+0x102/0x170 [ 2971.182888][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.182888][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.182888][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.182888][ T72] netlink_unicast+0x449/0x710 [ 2971.182888][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.182888][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.182888][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.182888][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.182888][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.182888][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.182888][ T72] [ 2971.184439][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2971.184439][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.184439][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.184439][ T72] ipv6_find_idev+0x102/0x170 [ 2971.184439][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.184439][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.184439][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.184439][ T72] netlink_unicast+0x449/0x710 [ 2971.184439][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.184439][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.184439][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.184439][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.184439][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.184439][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.184439][ T72] [ 2971.186480][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2971.186749][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2971.186749][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.186749][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.186749][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.186749][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.186749][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.186749][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.186749][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.186749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.186749][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.186749][ T72] netlink_unicast+0x449/0x710 [ 2971.186749][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.186749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.186749][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.186749][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.186749][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.186749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.186749][ T72] [ 2971.188727][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2971.188727][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.188727][ T72] ipv6_find_idev+0x102/0x170 [ 2971.188727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.188727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.188727][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.188727][ T72] netlink_unicast+0x449/0x710 [ 2971.188727][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.188727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.188727][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.188727][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.188727][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.188727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.188727][ T72] [ 2971.190281][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2971.190281][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.190281][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.190281][ T72] ipv6_find_idev+0x102/0x170 [ 2971.190281][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.190281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.190281][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.190281][ T72] netlink_unicast+0x449/0x710 [ 2971.190281][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.190281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.190281][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.190281][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.190281][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.190281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.190281][ T72] [ 2971.191966][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2971.192238][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2971.192238][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.192238][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.192238][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.192238][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.192238][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.192238][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.192238][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.192238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.192238][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.192238][ T72] netlink_unicast+0x449/0x710 [ 2971.192238][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.192238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.192238][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.192238][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.192238][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.192238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.192238][ T72] [ 2971.194243][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2971.194243][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.194243][ T72] ipv6_find_idev+0x102/0x170 [ 2971.194243][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.194243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.194243][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.194243][ T72] netlink_unicast+0x449/0x710 [ 2971.194243][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.194243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.194243][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.194243][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.194243][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.194243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.194243][ T72] [ 2971.195800][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2971.195800][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.195800][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.195800][ T72] ipv6_find_idev+0x102/0x170 [ 2971.195800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.195800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.195800][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.195800][ T72] netlink_unicast+0x449/0x710 [ 2971.195800][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.195800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.195800][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.195800][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.195800][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.195800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.195800][ T72] [ 2971.197531][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2971.197846][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2971.197846][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.197846][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.197846][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.197846][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.197846][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.197846][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.197846][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.197846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.197846][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.197846][ T72] netlink_unicast+0x449/0x710 [ 2971.197846][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.197846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.197846][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.197846][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.197846][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.197846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.197846][ T72] [ 2971.199850][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2971.199850][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.199850][ T72] ipv6_find_idev+0x102/0x170 [ 2971.199850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.199850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.199850][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.199850][ T72] netlink_unicast+0x449/0x710 [ 2971.199850][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.199850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.199850][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.199850][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.199850][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.199850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.199850][ T72] [ 2971.201395][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2971.201395][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.201395][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.201395][ T72] ipv6_find_idev+0x102/0x170 [ 2971.201395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.201395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.201395][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.201395][ T72] netlink_unicast+0x449/0x710 [ 2971.201395][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.201395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.201395][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.201395][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.201395][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.201395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.201395][ T72] [ 2971.203303][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2971.203565][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2971.203565][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.203565][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.203565][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.203565][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.203565][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.203565][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.203565][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.203565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.203565][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.203565][ T72] netlink_unicast+0x449/0x710 [ 2971.203565][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.203565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.203565][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.203565][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.203565][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.203565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.203565][ T72] [ 2971.205849][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2971.205849][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.205849][ T72] ipv6_find_idev+0x102/0x170 [ 2971.205849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.205849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.205849][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.205849][ T72] netlink_unicast+0x449/0x710 [ 2971.205849][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.205849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.205849][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.205849][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.205849][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.205849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.205849][ T72] [ 2971.207554][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2971.207554][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.207554][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.207554][ T72] ipv6_find_idev+0x102/0x170 [ 2971.207554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.207554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.207554][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.207554][ T72] netlink_unicast+0x449/0x710 [ 2971.207554][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.207554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.207554][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.207554][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.207554][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.207554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.207554][ T72] [ 2971.209428][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2971.209685][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2971.209685][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.209685][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.209685][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.209685][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.209685][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.209685][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.209685][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.209685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.209685][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.209685][ T72] netlink_unicast+0x449/0x710 [ 2971.209685][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.209685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.209685][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.209685][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.209685][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.209685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.209685][ T72] [ 2971.211915][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2971.211915][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.211915][ T72] ipv6_find_idev+0x102/0x170 [ 2971.211915][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.211915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.211915][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.211915][ T72] netlink_unicast+0x449/0x710 [ 2971.211915][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.211915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.211915][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.211915][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.211915][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.211915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.211915][ T72] [ 2971.213703][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2971.213703][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.213703][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.213703][ T72] ipv6_find_idev+0x102/0x170 [ 2971.213703][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.213703][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.213703][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.213703][ T72] netlink_unicast+0x449/0x710 [ 2971.213703][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.213703][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.213703][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.213703][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.213703][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.213703][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.213703][ T72] [ 2971.215609][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2971.215925][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2971.215925][ T72] netdev_get_by_index+0x5e/0x80 [ 2971.215925][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2971.215925][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2971.215925][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2971.215925][ T72] ipv6_add_addr+0x411/0x2000 [ 2971.215925][ T72] inet6_addr_add+0x30e/0xa40 [ 2971.215925][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2971.215925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.215925][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.215925][ T72] netlink_unicast+0x449/0x710 [ 2971.215925][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.215925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.215925][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.215925][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.215925][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.215925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.215925][ T72] [ 2971.218145][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2971.218145][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2971.218145][ T72] ipv6_find_idev+0x102/0x170 [ 2971.218145][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.218145][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.218145][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.218145][ T72] netlink_unicast+0x449/0x710 [ 2971.218145][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.218145][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.218145][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.218145][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.218145][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.218145][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.218145][ T72] [ 2971.219873][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2971.219873][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2971.219873][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2971.219873][ T72] ipv6_find_idev+0x102/0x170 [ 2971.219873][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2971.219873][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2971.219873][ T72] netlink_rcv_skb+0x130/0x360 [ 2971.219873][ T72] netlink_unicast+0x449/0x710 [ 2971.219873][ T72] netlink_sendmsg+0x723/0xbe0 [ 2971.219873][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2971.219873][ T72] ___sys_sendmsg+0xee/0x170 [ 2971.219873][ T72] __sys_sendmsg+0xcd/0x170 [ 2971.219873][ T72] do_syscall_64+0xc6/0x1e0 [ 2971.219873][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2971.219873][ T72] [ 2981.294884][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2981.295386][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2981.295386][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.295386][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.295386][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.295386][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.295386][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.295386][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.295386][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.295386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.295386][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.295386][ T72] netlink_unicast+0x449/0x710 [ 2981.295386][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.295386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.295386][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.295386][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.295386][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.295386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.295386][ T72] [ 2981.297513][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2981.297513][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.297513][ T72] ipv6_find_idev+0x102/0x170 [ 2981.297513][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.297513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.297513][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.297513][ T72] netlink_unicast+0x449/0x710 [ 2981.297513][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.297513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.297513][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.297513][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.297513][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.297513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.297513][ T72] [ 2981.299165][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2981.299165][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.299165][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.299165][ T72] ipv6_find_idev+0x102/0x170 [ 2981.299165][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.299165][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.299165][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.299165][ T72] netlink_unicast+0x449/0x710 [ 2981.299165][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.299165][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.299165][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.299165][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.299165][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.299165][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.299165][ T72] [ 2981.300911][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2981.301231][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2981.301231][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.301231][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.301231][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.301231][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.301231][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.301231][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.301231][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.301231][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.301231][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.301231][ T72] netlink_unicast+0x449/0x710 [ 2981.301231][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.301231][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.301231][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.301231][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.301231][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.301231][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.301231][ T72] [ 2981.303315][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2981.303315][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.303315][ T72] ipv6_find_idev+0x102/0x170 [ 2981.303315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.303315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.303315][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.303315][ T72] netlink_unicast+0x449/0x710 [ 2981.303315][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.303315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.303315][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.303315][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.303315][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.303315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.303315][ T72] [ 2981.304952][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2981.304952][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.304952][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.304952][ T72] ipv6_find_idev+0x102/0x170 [ 2981.304952][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.304952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.304952][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.304952][ T72] netlink_unicast+0x449/0x710 [ 2981.304952][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.304952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.304952][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.304952][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.304952][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.304952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.304952][ T72] [ 2981.306764][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2981.307098][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2981.307098][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.307098][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.307098][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.307098][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.307098][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.307098][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.307098][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.307098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.307098][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.307098][ T72] netlink_unicast+0x449/0x710 [ 2981.307098][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.307098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.307098][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.307098][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.307098][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.307098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.307098][ T72] [ 2981.309176][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2981.309176][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.309176][ T72] ipv6_find_idev+0x102/0x170 [ 2981.309176][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.309176][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.309176][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.309176][ T72] netlink_unicast+0x449/0x710 [ 2981.309176][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.309176][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.309176][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.309176][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.309176][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.309176][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.309176][ T72] [ 2981.310751][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2981.310751][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.310751][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.310751][ T72] ipv6_find_idev+0x102/0x170 [ 2981.310751][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.310751][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.310751][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.310751][ T72] netlink_unicast+0x449/0x710 [ 2981.310751][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.310751][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.310751][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.310751][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.310751][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.310751][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.310751][ T72] [ 2981.312420][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2981.312685][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2981.312685][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.312685][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.312685][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.312685][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.312685][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.312685][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.312685][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.312685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.312685][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.312685][ T72] netlink_unicast+0x449/0x710 [ 2981.312685][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.312685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.312685][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.312685][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.312685][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.312685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.312685][ T72] [ 2981.314688][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2981.314688][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.314688][ T72] ipv6_find_idev+0x102/0x170 [ 2981.314688][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.314688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.314688][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.314688][ T72] netlink_unicast+0x449/0x710 [ 2981.314688][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.314688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.314688][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.314688][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.314688][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.314688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.314688][ T72] [ 2981.316352][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2981.316352][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.316352][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.316352][ T72] ipv6_find_idev+0x102/0x170 [ 2981.316352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.316352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.316352][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.316352][ T72] netlink_unicast+0x449/0x710 [ 2981.316352][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.316352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.316352][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.316352][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.316352][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.316352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.316352][ T72] [ 2981.318074][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2981.318338][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2981.318338][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.318338][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.318338][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.318338][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.318338][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.318338][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.318338][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.318338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.318338][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.318338][ T72] netlink_unicast+0x449/0x710 [ 2981.318338][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.318338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.318338][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.318338][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.318338][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.318338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.318338][ T72] [ 2981.320455][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2981.320455][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.320455][ T72] ipv6_find_idev+0x102/0x170 [ 2981.320455][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.320455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.320455][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.320455][ T72] netlink_unicast+0x449/0x710 [ 2981.320455][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.320455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.320455][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.320455][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.320455][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.320455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.320455][ T72] [ 2981.322053][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2981.322053][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.322053][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.322053][ T72] ipv6_find_idev+0x102/0x170 [ 2981.322053][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.322053][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.322053][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.322053][ T72] netlink_unicast+0x449/0x710 [ 2981.322053][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.322053][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.322053][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.322053][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.322053][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.322053][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.322053][ T72] [ 2981.324140][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2981.324448][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2981.324448][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.324448][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.324448][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.324448][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.324448][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.324448][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.324448][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.324448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.324448][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.324448][ T72] netlink_unicast+0x449/0x710 [ 2981.324448][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.324448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.324448][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.324448][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.324448][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.324448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.324448][ T72] [ 2981.326728][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2981.326728][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.326728][ T72] ipv6_find_idev+0x102/0x170 [ 2981.326728][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.326728][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.326728][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.326728][ T72] netlink_unicast+0x449/0x710 [ 2981.326728][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.326728][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.326728][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.326728][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.326728][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.326728][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.326728][ T72] [ 2981.328543][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2981.328543][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.328543][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.328543][ T72] ipv6_find_idev+0x102/0x170 [ 2981.328543][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.328543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.328543][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.328543][ T72] netlink_unicast+0x449/0x710 [ 2981.328543][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.328543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.328543][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.328543][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.328543][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.328543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.328543][ T72] [ 2981.330591][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2981.330912][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2981.330912][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.330912][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.330912][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.330912][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.330912][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.330912][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.330912][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.330912][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.330912][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.330912][ T72] netlink_unicast+0x449/0x710 [ 2981.330912][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.330912][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.330912][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.330912][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.330912][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.330912][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.330912][ T72] [ 2981.333085][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2981.333085][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.333085][ T72] ipv6_find_idev+0x102/0x170 [ 2981.333085][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.333085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.333085][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.333085][ T72] netlink_unicast+0x449/0x710 [ 2981.333085][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.333085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.333085][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.333085][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.333085][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.333085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.333085][ T72] [ 2981.334867][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2981.334867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.334867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.334867][ T72] ipv6_find_idev+0x102/0x170 [ 2981.334867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.334867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.334867][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.334867][ T72] netlink_unicast+0x449/0x710 [ 2981.334867][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.334867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.334867][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.334867][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.334867][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.334867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.334867][ T72] [ 2981.336785][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2981.337054][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2981.337054][ T72] netdev_get_by_index+0x5e/0x80 [ 2981.337054][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2981.337054][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2981.337054][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2981.337054][ T72] ipv6_add_addr+0x411/0x2000 [ 2981.337054][ T72] inet6_addr_add+0x30e/0xa40 [ 2981.337054][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2981.337054][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.337054][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.337054][ T72] netlink_unicast+0x449/0x710 [ 2981.337054][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.337054][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.337054][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.337054][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.337054][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.337054][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.337054][ T72] [ 2981.339297][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2981.339297][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2981.339297][ T72] ipv6_find_idev+0x102/0x170 [ 2981.339297][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.339297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.339297][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.339297][ T72] netlink_unicast+0x449/0x710 [ 2981.339297][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.339297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.339297][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.339297][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.339297][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.339297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.339297][ T72] [ 2981.340995][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2981.340995][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2981.340995][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2981.340995][ T72] ipv6_find_idev+0x102/0x170 [ 2981.340995][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2981.340995][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2981.340995][ T72] netlink_rcv_skb+0x130/0x360 [ 2981.340995][ T72] netlink_unicast+0x449/0x710 [ 2981.340995][ T72] netlink_sendmsg+0x723/0xbe0 [ 2981.340995][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2981.340995][ T72] ___sys_sendmsg+0xee/0x170 [ 2981.340995][ T72] __sys_sendmsg+0xcd/0x170 [ 2981.340995][ T72] do_syscall_64+0xc6/0x1e0 [ 2981.340995][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2981.340995][ T72] [ 2991.550888][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 2991.551354][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2991.551354][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.551354][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.551354][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.551354][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.551354][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.551354][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.551354][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.551354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.551354][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.551354][ T72] netlink_unicast+0x449/0x710 [ 2991.551354][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.551354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.551354][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.551354][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.551354][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.551354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.551354][ T72] [ 2991.553354][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2991.553354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.553354][ T72] ipv6_find_idev+0x102/0x170 [ 2991.553354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.553354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.553354][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.553354][ T72] netlink_unicast+0x449/0x710 [ 2991.553354][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.553354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.553354][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.553354][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.553354][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.553354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.553354][ T72] [ 2991.554885][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 2991.554885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.554885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.554885][ T72] ipv6_find_idev+0x102/0x170 [ 2991.554885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.554885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.554885][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.554885][ T72] netlink_unicast+0x449/0x710 [ 2991.554885][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.554885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.554885][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.554885][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.554885][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.554885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.554885][ T72] [ 2991.556557][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 2991.556854][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2991.556854][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.556854][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.556854][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.556854][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.556854][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.556854][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.556854][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.556854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.556854][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.556854][ T72] netlink_unicast+0x449/0x710 [ 2991.556854][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.556854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.556854][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.556854][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.556854][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.556854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.556854][ T72] [ 2991.558825][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2991.558825][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.558825][ T72] ipv6_find_idev+0x102/0x170 [ 2991.558825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.558825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.558825][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.558825][ T72] netlink_unicast+0x449/0x710 [ 2991.558825][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.558825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.558825][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.558825][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.558825][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.558825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.558825][ T72] [ 2991.560339][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 2991.560339][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.560339][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.560339][ T72] ipv6_find_idev+0x102/0x170 [ 2991.560339][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.560339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.560339][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.560339][ T72] netlink_unicast+0x449/0x710 [ 2991.560339][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.560339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.560339][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.560339][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.560339][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.560339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.560339][ T72] [ 2991.562002][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 2991.562265][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2991.562265][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.562265][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.562265][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.562265][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.562265][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.562265][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.562265][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.562265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.562265][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.562265][ T72] netlink_unicast+0x449/0x710 [ 2991.562265][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.562265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.562265][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.562265][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.562265][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.562265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.562265][ T72] [ 2991.564232][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2991.564232][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.564232][ T72] ipv6_find_idev+0x102/0x170 [ 2991.564232][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.564232][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.564232][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.564232][ T72] netlink_unicast+0x449/0x710 [ 2991.564232][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.564232][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.564232][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.564232][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.564232][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.564232][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.564232][ T72] [ 2991.565760][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 2991.565760][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.565760][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.565760][ T72] ipv6_find_idev+0x102/0x170 [ 2991.565760][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.565760][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.565760][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.565760][ T72] netlink_unicast+0x449/0x710 [ 2991.565760][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.565760][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.565760][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.565760][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.565760][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.565760][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.565760][ T72] [ 2991.567445][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 2991.567735][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2991.567735][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.567735][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.567735][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.567735][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.567735][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.567735][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.567735][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.567735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.567735][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.567735][ T72] netlink_unicast+0x449/0x710 [ 2991.567735][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.567735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.567735][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.567735][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.567735][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.567735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.567735][ T72] [ 2991.569690][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2991.569690][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.569690][ T72] ipv6_find_idev+0x102/0x170 [ 2991.569690][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.569690][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.569690][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.569690][ T72] netlink_unicast+0x449/0x710 [ 2991.569690][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.569690][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.569690][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.569690][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.569690][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.569690][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.569690][ T72] [ 2991.571228][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 2991.571228][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.571228][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.571228][ T72] ipv6_find_idev+0x102/0x170 [ 2991.571228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.571228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.571228][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.571228][ T72] netlink_unicast+0x449/0x710 [ 2991.571228][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.571228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.571228][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.571228][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.571228][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.571228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.571228][ T72] [ 2991.573290][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 2991.573553][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2991.573553][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.573553][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.573553][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.573553][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.573553][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.573553][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.573553][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.573553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.573553][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.573553][ T72] netlink_unicast+0x449/0x710 [ 2991.573553][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.573553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.573553][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.573553][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.573553][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.573553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.573553][ T72] [ 2991.575515][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2991.575515][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.575515][ T72] ipv6_find_idev+0x102/0x170 [ 2991.575515][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.575515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.575515][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.575515][ T72] netlink_unicast+0x449/0x710 [ 2991.575515][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.575515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.575515][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.575515][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.575515][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.575515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.575515][ T72] [ 2991.577027][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 2991.577027][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.577027][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.577027][ T72] ipv6_find_idev+0x102/0x170 [ 2991.577027][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.577027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.577027][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.577027][ T72] netlink_unicast+0x449/0x710 [ 2991.577027][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.577027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.577027][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.577027][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.577027][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.577027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.577027][ T72] [ 2991.578757][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 2991.579021][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2991.579021][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.579021][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.579021][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.579021][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.579021][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.579021][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.579021][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.579021][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.579021][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.579021][ T72] netlink_unicast+0x449/0x710 [ 2991.579021][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.579021][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.579021][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.579021][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.579021][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.579021][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.579021][ T72] [ 2991.581111][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2991.581111][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.581111][ T72] ipv6_find_idev+0x102/0x170 [ 2991.581111][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.581111][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.581111][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.581111][ T72] netlink_unicast+0x449/0x710 [ 2991.581111][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.581111][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.581111][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.581111][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.581111][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.581111][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.581111][ T72] [ 2991.582861][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 2991.582861][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.582861][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.582861][ T72] ipv6_find_idev+0x102/0x170 [ 2991.582861][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.582861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.582861][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.582861][ T72] netlink_unicast+0x449/0x710 [ 2991.582861][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.582861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.582861][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.582861][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.582861][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.582861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.582861][ T72] [ 2991.584761][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 2991.585021][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2991.585021][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.585021][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.585021][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.585021][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.585021][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.585021][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.585021][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.585021][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.585021][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.585021][ T72] netlink_unicast+0x449/0x710 [ 2991.585021][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.585021][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.585021][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.585021][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.585021][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.585021][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.585021][ T72] [ 2991.587239][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2991.587239][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.587239][ T72] ipv6_find_idev+0x102/0x170 [ 2991.587239][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.587239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.587239][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.587239][ T72] netlink_unicast+0x449/0x710 [ 2991.587239][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.587239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.587239][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.587239][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.587239][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.587239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.587239][ T72] [ 2991.588931][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 2991.588931][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.588931][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.588931][ T72] ipv6_find_idev+0x102/0x170 [ 2991.588931][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.588931][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.588931][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.588931][ T72] netlink_unicast+0x449/0x710 [ 2991.588931][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.588931][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.588931][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.588931][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.588931][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.588931][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.588931][ T72] [ 2991.590822][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 2991.591087][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2991.591087][ T72] netdev_get_by_index+0x5e/0x80 [ 2991.591087][ T72] fib6_nh_init+0x3d8/0x15b0 [ 2991.591087][ T72] ip6_route_info_create+0xf18/0x17d0 [ 2991.591087][ T72] addrconf_f6i_alloc+0x244/0x410 [ 2991.591087][ T72] ipv6_add_addr+0x411/0x2000 [ 2991.591087][ T72] inet6_addr_add+0x30e/0xa40 [ 2991.591087][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 2991.591087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.591087][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.591087][ T72] netlink_unicast+0x449/0x710 [ 2991.591087][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.591087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.591087][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.591087][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.591087][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.591087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.591087][ T72] [ 2991.593352][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2991.593352][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 2991.593352][ T72] ipv6_find_idev+0x102/0x170 [ 2991.593352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.593352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.593352][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.593352][ T72] netlink_unicast+0x449/0x710 [ 2991.593352][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.593352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.593352][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.593352][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.593352][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.593352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.593352][ T72] [ 2991.594983][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 2991.594983][ T72] neigh_parms_alloc+0x1e5/0x510 [ 2991.594983][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 2991.594983][ T72] ipv6_find_idev+0x102/0x170 [ 2991.594983][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 2991.594983][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 2991.594983][ T72] netlink_rcv_skb+0x130/0x360 [ 2991.594983][ T72] netlink_unicast+0x449/0x710 [ 2991.594983][ T72] netlink_sendmsg+0x723/0xbe0 [ 2991.594983][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 2991.594983][ T72] ___sys_sendmsg+0xee/0x170 [ 2991.594983][ T72] __sys_sendmsg+0xcd/0x170 [ 2991.594983][ T72] do_syscall_64+0xc6/0x1e0 [ 2991.594983][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 2991.594983][ T72] [ 3001.846785][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3001.847290][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3001.847290][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.847290][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.847290][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.847290][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.847290][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.847290][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.847290][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.847290][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.847290][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.847290][ T72] netlink_unicast+0x449/0x710 [ 3001.847290][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.847290][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.847290][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.847290][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.847290][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.847290][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.847290][ T72] [ 3001.849314][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3001.849314][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.849314][ T72] ipv6_find_idev+0x102/0x170 [ 3001.849314][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.849314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.849314][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.849314][ T72] netlink_unicast+0x449/0x710 [ 3001.849314][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.849314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.849314][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.849314][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.849314][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.849314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.849314][ T72] [ 3001.850857][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3001.850857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.850857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.850857][ T72] ipv6_find_idev+0x102/0x170 [ 3001.850857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.850857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.850857][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.850857][ T72] netlink_unicast+0x449/0x710 [ 3001.850857][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.850857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.850857][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.850857][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.850857][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.850857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.850857][ T72] [ 3001.852569][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3001.852853][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3001.852853][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.852853][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.852853][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.852853][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.852853][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.852853][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.852853][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.852853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.852853][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.852853][ T72] netlink_unicast+0x449/0x710 [ 3001.852853][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.852853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.852853][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.852853][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.852853][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.852853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.852853][ T72] [ 3001.854855][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3001.854855][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.854855][ T72] ipv6_find_idev+0x102/0x170 [ 3001.854855][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.854855][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.854855][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.854855][ T72] netlink_unicast+0x449/0x710 [ 3001.854855][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.854855][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.854855][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.854855][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.854855][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.854855][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.854855][ T72] [ 3001.856416][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3001.856416][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.856416][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.856416][ T72] ipv6_find_idev+0x102/0x170 [ 3001.856416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.856416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.856416][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.856416][ T72] netlink_unicast+0x449/0x710 [ 3001.856416][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.856416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.856416][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.856416][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.856416][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.856416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.856416][ T72] [ 3001.858120][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3001.858392][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3001.858392][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.858392][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.858392][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.858392][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.858392][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.858392][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.858392][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.858392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.858392][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.858392][ T72] netlink_unicast+0x449/0x710 [ 3001.858392][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.858392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.858392][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.858392][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.858392][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.858392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.858392][ T72] [ 3001.860411][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3001.860411][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.860411][ T72] ipv6_find_idev+0x102/0x170 [ 3001.860411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.860411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.860411][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.860411][ T72] netlink_unicast+0x449/0x710 [ 3001.860411][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.860411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.860411][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.860411][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.860411][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.860411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.860411][ T72] [ 3001.861959][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3001.861959][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.861959][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.861959][ T72] ipv6_find_idev+0x102/0x170 [ 3001.861959][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.861959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.861959][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.861959][ T72] netlink_unicast+0x449/0x710 [ 3001.861959][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.861959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.861959][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.861959][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.861959][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.861959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.861959][ T72] [ 3001.863647][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3001.864361][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3001.864361][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.864361][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.864361][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.864361][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.864361][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.864361][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.864361][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.864361][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.864361][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.864361][ T72] netlink_unicast+0x449/0x710 [ 3001.864361][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.864361][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.864361][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.864361][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.864361][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.864361][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.864361][ T72] [ 3001.866355][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3001.866355][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.866355][ T72] ipv6_find_idev+0x102/0x170 [ 3001.866355][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.866355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.866355][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.866355][ T72] netlink_unicast+0x449/0x710 [ 3001.866355][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.866355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.866355][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.866355][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.866355][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.866355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.866355][ T72] [ 3001.867896][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3001.867896][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.867896][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.867896][ T72] ipv6_find_idev+0x102/0x170 [ 3001.867896][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.867896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.867896][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.867896][ T72] netlink_unicast+0x449/0x710 [ 3001.867896][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.867896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.867896][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.867896][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.867896][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.867896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.867896][ T72] [ 3001.869630][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3001.869956][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3001.869956][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.869956][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.869956][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.869956][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.869956][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.869956][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.869956][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.869956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.869956][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.869956][ T72] netlink_unicast+0x449/0x710 [ 3001.869956][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.869956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.869956][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.869956][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.869956][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.869956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.869956][ T72] [ 3001.871953][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3001.871953][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.871953][ T72] ipv6_find_idev+0x102/0x170 [ 3001.871953][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.871953][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.871953][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.871953][ T72] netlink_unicast+0x449/0x710 [ 3001.871953][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.871953][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.871953][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.871953][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.871953][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.871953][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.871953][ T72] [ 3001.873493][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3001.873493][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.873493][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.873493][ T72] ipv6_find_idev+0x102/0x170 [ 3001.873493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.873493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.873493][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.873493][ T72] netlink_unicast+0x449/0x710 [ 3001.873493][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.873493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.873493][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.873493][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.873493][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.873493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.873493][ T72] [ 3001.875220][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3001.875555][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3001.875555][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.875555][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.875555][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.875555][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.875555][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.875555][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.875555][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.875555][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.875555][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.875555][ T72] netlink_unicast+0x449/0x710 [ 3001.875555][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.875555][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.875555][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.875555][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.875555][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.875555][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.875555][ T72] [ 3001.877617][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3001.877617][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.877617][ T72] ipv6_find_idev+0x102/0x170 [ 3001.877617][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.877617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.877617][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.877617][ T72] netlink_unicast+0x449/0x710 [ 3001.877617][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.877617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.877617][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.877617][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.877617][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.877617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.877617][ T72] [ 3001.879420][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3001.879420][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.879420][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.879420][ T72] ipv6_find_idev+0x102/0x170 [ 3001.879420][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.879420][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.879420][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.879420][ T72] netlink_unicast+0x449/0x710 [ 3001.879420][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.879420][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.879420][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.879420][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.879420][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.879420][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.879420][ T72] [ 3001.881336][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3001.881647][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3001.881647][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.881647][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.881647][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.881647][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.881647][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.881647][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.881647][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.881647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.881647][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.881647][ T72] netlink_unicast+0x449/0x710 [ 3001.881647][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.881647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.881647][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.881647][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.881647][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.881647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.881647][ T72] [ 3001.883827][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3001.883827][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.883827][ T72] ipv6_find_idev+0x102/0x170 [ 3001.883827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.883827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.883827][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.883827][ T72] netlink_unicast+0x449/0x710 [ 3001.883827][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.883827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.883827][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.883827][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.883827][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.883827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.883827][ T72] [ 3001.885559][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3001.885559][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.885559][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.885559][ T72] ipv6_find_idev+0x102/0x170 [ 3001.885559][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.885559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.885559][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.885559][ T72] netlink_unicast+0x449/0x710 [ 3001.885559][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.885559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.885559][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.885559][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.885559][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.885559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.885559][ T72] [ 3001.887495][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3001.887819][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3001.887819][ T72] netdev_get_by_index+0x5e/0x80 [ 3001.887819][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3001.887819][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3001.887819][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3001.887819][ T72] ipv6_add_addr+0x411/0x2000 [ 3001.887819][ T72] inet6_addr_add+0x30e/0xa40 [ 3001.887819][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3001.887819][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.887819][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.887819][ T72] netlink_unicast+0x449/0x710 [ 3001.887819][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.887819][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.887819][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.887819][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.887819][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.887819][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.887819][ T72] [ 3001.889996][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3001.889996][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3001.889996][ T72] ipv6_find_idev+0x102/0x170 [ 3001.889996][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.889996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.889996][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.889996][ T72] netlink_unicast+0x449/0x710 [ 3001.889996][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.889996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.889996][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.889996][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.889996][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.889996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.889996][ T72] [ 3001.891776][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3001.891776][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3001.891776][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3001.891776][ T72] ipv6_find_idev+0x102/0x170 [ 3001.891776][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3001.891776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3001.891776][ T72] netlink_rcv_skb+0x130/0x360 [ 3001.891776][ T72] netlink_unicast+0x449/0x710 [ 3001.891776][ T72] netlink_sendmsg+0x723/0xbe0 [ 3001.891776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3001.891776][ T72] ___sys_sendmsg+0xee/0x170 [ 3001.891776][ T72] __sys_sendmsg+0xcd/0x170 [ 3001.891776][ T72] do_syscall_64+0xc6/0x1e0 [ 3001.891776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3001.891776][ T72] [ 3011.934881][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3011.935372][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3011.935372][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.935372][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.935372][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.935372][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.935372][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.935372][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.935372][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.935372][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.935372][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.935372][ T72] netlink_unicast+0x449/0x710 [ 3011.935372][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.935372][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.935372][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.935372][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.935372][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.935372][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.935372][ T72] [ 3011.937371][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3011.937371][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.937371][ T72] ipv6_find_idev+0x102/0x170 [ 3011.937371][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.937371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.937371][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.937371][ T72] netlink_unicast+0x449/0x710 [ 3011.937371][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.937371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.937371][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.937371][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.937371][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.937371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.937371][ T72] [ 3011.938904][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3011.938904][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.938904][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.938904][ T72] ipv6_find_idev+0x102/0x170 [ 3011.938904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.938904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.938904][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.938904][ T72] netlink_unicast+0x449/0x710 [ 3011.938904][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.938904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.938904][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.938904][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.938904][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.938904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.938904][ T72] [ 3011.940570][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3011.940856][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3011.940856][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.940856][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.940856][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.940856][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.940856][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.940856][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.940856][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.940856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.940856][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.940856][ T72] netlink_unicast+0x449/0x710 [ 3011.940856][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.940856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.940856][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.940856][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.940856][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.940856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.940856][ T72] [ 3011.942821][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3011.942821][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.942821][ T72] ipv6_find_idev+0x102/0x170 [ 3011.942821][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.942821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.942821][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.942821][ T72] netlink_unicast+0x449/0x710 [ 3011.942821][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.942821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.942821][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.942821][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.942821][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.942821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.942821][ T72] [ 3011.944334][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3011.944334][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.944334][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.944334][ T72] ipv6_find_idev+0x102/0x170 [ 3011.944334][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.944334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.944334][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.944334][ T72] netlink_unicast+0x449/0x710 [ 3011.944334][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.944334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.944334][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.944334][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.944334][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.944334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.944334][ T72] [ 3011.945995][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3011.946260][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3011.946260][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.946260][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.946260][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.946260][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.946260][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.946260][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.946260][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.946260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.946260][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.946260][ T72] netlink_unicast+0x449/0x710 [ 3011.946260][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.946260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.946260][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.946260][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.946260][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.946260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.946260][ T72] [ 3011.948224][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3011.948224][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.948224][ T72] ipv6_find_idev+0x102/0x170 [ 3011.948224][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.948224][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.948224][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.948224][ T72] netlink_unicast+0x449/0x710 [ 3011.948224][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.948224][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.948224][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.948224][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.948224][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.948224][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.948224][ T72] [ 3011.949768][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3011.949768][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.949768][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.949768][ T72] ipv6_find_idev+0x102/0x170 [ 3011.949768][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.949768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.949768][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.949768][ T72] netlink_unicast+0x449/0x710 [ 3011.949768][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.949768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.949768][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.949768][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.949768][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.949768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.949768][ T72] [ 3011.951418][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3011.951677][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3011.951677][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.951677][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.951677][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.951677][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.951677][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.951677][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.951677][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.951677][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.951677][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.951677][ T72] netlink_unicast+0x449/0x710 [ 3011.951677][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.951677][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.951677][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.951677][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.951677][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.951677][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.951677][ T72] [ 3011.953634][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3011.953634][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.953634][ T72] ipv6_find_idev+0x102/0x170 [ 3011.953634][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.953634][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.953634][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.953634][ T72] netlink_unicast+0x449/0x710 [ 3011.953634][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.953634][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.953634][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.953634][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.953634][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.953634][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.953634][ T72] [ 3011.955155][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3011.955155][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.955155][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.955155][ T72] ipv6_find_idev+0x102/0x170 [ 3011.955155][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.955155][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.955155][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.955155][ T72] netlink_unicast+0x449/0x710 [ 3011.955155][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.955155][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.955155][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.955155][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.955155][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.955155][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.955155][ T72] [ 3011.957210][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3011.957472][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3011.957472][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.957472][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.957472][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.957472][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.957472][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.957472][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.957472][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.957472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.957472][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.957472][ T72] netlink_unicast+0x449/0x710 [ 3011.957472][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.957472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.957472][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.957472][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.957472][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.957472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.957472][ T72] [ 3011.959429][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3011.959429][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.959429][ T72] ipv6_find_idev+0x102/0x170 [ 3011.959429][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.959429][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.959429][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.959429][ T72] netlink_unicast+0x449/0x710 [ 3011.959429][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.959429][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.959429][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.959429][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.959429][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.959429][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.959429][ T72] [ 3011.960937][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3011.960937][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.960937][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.960937][ T72] ipv6_find_idev+0x102/0x170 [ 3011.960937][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.960937][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.960937][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.960937][ T72] netlink_unicast+0x449/0x710 [ 3011.960937][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.960937][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.960937][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.960937][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.960937][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.960937][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.960937][ T72] [ 3011.962628][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3011.962957][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3011.962957][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.962957][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.962957][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.962957][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.962957][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.962957][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.962957][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.962957][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.962957][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.962957][ T72] netlink_unicast+0x449/0x710 [ 3011.962957][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.962957][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.962957][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.962957][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.962957][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.962957][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.962957][ T72] [ 3011.964980][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3011.964980][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.964980][ T72] ipv6_find_idev+0x102/0x170 [ 3011.964980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.964980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.964980][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.964980][ T72] netlink_unicast+0x449/0x710 [ 3011.964980][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.964980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.964980][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.964980][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.964980][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.964980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.964980][ T72] [ 3011.966730][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3011.966730][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.966730][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.966730][ T72] ipv6_find_idev+0x102/0x170 [ 3011.966730][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.966730][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.966730][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.966730][ T72] netlink_unicast+0x449/0x710 [ 3011.966730][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.966730][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.966730][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.966730][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.966730][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.966730][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.966730][ T72] [ 3011.968608][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3011.968919][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3011.968919][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.968919][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.968919][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.968919][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.968919][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.968919][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.968919][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.968919][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.968919][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.968919][ T72] netlink_unicast+0x449/0x710 [ 3011.968919][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.968919][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.968919][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.968919][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.968919][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.968919][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.968919][ T72] [ 3011.971580][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3011.971580][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.971580][ T72] ipv6_find_idev+0x102/0x170 [ 3011.971580][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.971580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.971580][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.971580][ T72] netlink_unicast+0x449/0x710 [ 3011.971580][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.971580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.971580][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.971580][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.971580][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.971580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.971580][ T72] [ 3011.973297][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3011.973297][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.973297][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.973297][ T72] ipv6_find_idev+0x102/0x170 [ 3011.973297][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.973297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.973297][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.973297][ T72] netlink_unicast+0x449/0x710 [ 3011.973297][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.973297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.973297][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.973297][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.973297][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.973297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.973297][ T72] [ 3011.975260][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3011.975529][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3011.975529][ T72] netdev_get_by_index+0x5e/0x80 [ 3011.975529][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3011.975529][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3011.975529][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3011.975529][ T72] ipv6_add_addr+0x411/0x2000 [ 3011.975529][ T72] inet6_addr_add+0x30e/0xa40 [ 3011.975529][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3011.975529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.975529][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.975529][ T72] netlink_unicast+0x449/0x710 [ 3011.975529][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.975529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.975529][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.975529][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.975529][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.975529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.975529][ T72] [ 3011.977739][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3011.977739][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3011.977739][ T72] ipv6_find_idev+0x102/0x170 [ 3011.977739][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.977739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.977739][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.977739][ T72] netlink_unicast+0x449/0x710 [ 3011.977739][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.977739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.977739][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.977739][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.977739][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.977739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.977739][ T72] [ 3011.979434][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3011.979434][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3011.979434][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3011.979434][ T72] ipv6_find_idev+0x102/0x170 [ 3011.979434][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3011.979434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3011.979434][ T72] netlink_rcv_skb+0x130/0x360 [ 3011.979434][ T72] netlink_unicast+0x449/0x710 [ 3011.979434][ T72] netlink_sendmsg+0x723/0xbe0 [ 3011.979434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3011.979434][ T72] ___sys_sendmsg+0xee/0x170 [ 3011.979434][ T72] __sys_sendmsg+0xcd/0x170 [ 3011.979434][ T72] do_syscall_64+0xc6/0x1e0 [ 3011.979434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3011.979434][ T72] [ 3022.175005][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3022.175500][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3022.175500][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.175500][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.175500][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.175500][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.175500][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.175500][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.175500][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.175500][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.175500][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.175500][ T72] netlink_unicast+0x449/0x710 [ 3022.175500][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.175500][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.175500][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.175500][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.175500][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.175500][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.175500][ T72] [ 3022.177537][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3022.177537][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.177537][ T72] ipv6_find_idev+0x102/0x170 [ 3022.177537][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.177537][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.177537][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.177537][ T72] netlink_unicast+0x449/0x710 [ 3022.177537][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.177537][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.177537][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.177537][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.177537][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.177537][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.177537][ T72] [ 3022.179049][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3022.179049][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.179049][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.179049][ T72] ipv6_find_idev+0x102/0x170 [ 3022.179049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.179049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.179049][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.179049][ T72] netlink_unicast+0x449/0x710 [ 3022.179049][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.179049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.179049][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.179049][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.179049][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.179049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.179049][ T72] [ 3022.180769][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3022.181041][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3022.181041][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.181041][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.181041][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.181041][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.181041][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.181041][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.181041][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.181041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.181041][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.181041][ T72] netlink_unicast+0x449/0x710 [ 3022.181041][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.181041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.181041][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.181041][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.181041][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.181041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.181041][ T72] [ 3022.183378][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3022.183378][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.183378][ T72] ipv6_find_idev+0x102/0x170 [ 3022.183378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.183378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.183378][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.183378][ T72] netlink_unicast+0x449/0x710 [ 3022.183378][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.183378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.183378][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.183378][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.183378][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.183378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.183378][ T72] [ 3022.184880][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3022.184880][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.184880][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.184880][ T72] ipv6_find_idev+0x102/0x170 [ 3022.184880][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.184880][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.184880][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.184880][ T72] netlink_unicast+0x449/0x710 [ 3022.184880][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.184880][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.184880][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.184880][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.184880][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.184880][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.184880][ T72] [ 3022.186529][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3022.186800][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3022.186800][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.186800][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.186800][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.186800][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.186800][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.186800][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.186800][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.186800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.186800][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.186800][ T72] netlink_unicast+0x449/0x710 [ 3022.186800][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.186800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.186800][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.186800][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.186800][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.186800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.186800][ T72] [ 3022.188762][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3022.188762][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.188762][ T72] ipv6_find_idev+0x102/0x170 [ 3022.188762][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.188762][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.188762][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.188762][ T72] netlink_unicast+0x449/0x710 [ 3022.188762][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.188762][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.188762][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.188762][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.188762][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.188762][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.188762][ T72] [ 3022.190271][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3022.190271][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.190271][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.190271][ T72] ipv6_find_idev+0x102/0x170 [ 3022.190271][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.190271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.190271][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.190271][ T72] netlink_unicast+0x449/0x710 [ 3022.190271][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.190271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.190271][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.190271][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.190271][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.190271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.190271][ T72] [ 3022.191921][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3022.192188][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3022.192188][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.192188][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.192188][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.192188][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.192188][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.192188][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.192188][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.192188][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.192188][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.192188][ T72] netlink_unicast+0x449/0x710 [ 3022.192188][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.192188][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.192188][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.192188][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.192188][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.192188][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.192188][ T72] [ 3022.194146][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3022.194146][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.194146][ T72] ipv6_find_idev+0x102/0x170 [ 3022.194146][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.194146][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.194146][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.194146][ T72] netlink_unicast+0x449/0x710 [ 3022.194146][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.194146][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.194146][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.194146][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.194146][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.194146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.194146][ T72] [ 3022.195775][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3022.195775][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.195775][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.195775][ T72] ipv6_find_idev+0x102/0x170 [ 3022.195775][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.195775][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.195775][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.195775][ T72] netlink_unicast+0x449/0x710 [ 3022.195775][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.195775][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.195775][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.195775][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.195775][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.195775][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.195775][ T72] [ 3022.197495][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3022.197757][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3022.197757][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.197757][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.197757][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.197757][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.197757][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.197757][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.197757][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.197757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.197757][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.197757][ T72] netlink_unicast+0x449/0x710 [ 3022.197757][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.197757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.197757][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.197757][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.197757][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.197757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.197757][ T72] [ 3022.199706][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3022.199706][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.199706][ T72] ipv6_find_idev+0x102/0x170 [ 3022.199706][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.199706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.199706][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.199706][ T72] netlink_unicast+0x449/0x710 [ 3022.199706][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.199706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.199706][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.199706][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.199706][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.199706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.199706][ T72] [ 3022.201212][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3022.201212][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.201212][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.201212][ T72] ipv6_find_idev+0x102/0x170 [ 3022.201212][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.201212][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.201212][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.201212][ T72] netlink_unicast+0x449/0x710 [ 3022.201212][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.201212][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.201212][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.201212][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.201212][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.201212][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.201212][ T72] [ 3022.203079][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3022.203339][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3022.203339][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.203339][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.203339][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.203339][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.203339][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.203339][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.203339][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.203339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.203339][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.203339][ T72] netlink_unicast+0x449/0x710 [ 3022.203339][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.203339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.203339][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.203339][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.203339][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.203339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.203339][ T72] [ 3022.205601][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3022.205601][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.205601][ T72] ipv6_find_idev+0x102/0x170 [ 3022.205601][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.205601][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.205601][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.205601][ T72] netlink_unicast+0x449/0x710 [ 3022.205601][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.205601][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.205601][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.205601][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.205601][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.205601][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.205601][ T72] [ 3022.207287][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3022.207287][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.207287][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.207287][ T72] ipv6_find_idev+0x102/0x170 [ 3022.207287][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.207287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.207287][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.207287][ T72] netlink_unicast+0x449/0x710 [ 3022.207287][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.207287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.207287][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.207287][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.207287][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.207287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.207287][ T72] [ 3022.209159][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3022.209420][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3022.209420][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.209420][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.209420][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.209420][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.209420][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.209420][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.209420][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.209420][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.209420][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.209420][ T72] netlink_unicast+0x449/0x710 [ 3022.209420][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.209420][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.209420][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.209420][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.209420][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.209420][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.209420][ T72] [ 3022.211609][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3022.211609][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.211609][ T72] ipv6_find_idev+0x102/0x170 [ 3022.211609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.211609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.211609][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.211609][ T72] netlink_unicast+0x449/0x710 [ 3022.211609][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.211609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.211609][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.211609][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.211609][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.211609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.211609][ T72] [ 3022.213294][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3022.213294][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.213294][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.213294][ T72] ipv6_find_idev+0x102/0x170 [ 3022.213294][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.213294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.213294][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.213294][ T72] netlink_unicast+0x449/0x710 [ 3022.213294][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.213294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.213294][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.213294][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.213294][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.213294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.213294][ T72] [ 3022.215238][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3022.215493][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3022.215493][ T72] netdev_get_by_index+0x5e/0x80 [ 3022.215493][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3022.215493][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3022.215493][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3022.215493][ T72] ipv6_add_addr+0x411/0x2000 [ 3022.215493][ T72] inet6_addr_add+0x30e/0xa40 [ 3022.215493][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3022.215493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.215493][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.215493][ T72] netlink_unicast+0x449/0x710 [ 3022.215493][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.215493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.215493][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.215493][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.215493][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.215493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.215493][ T72] [ 3022.217694][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3022.217694][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3022.217694][ T72] ipv6_find_idev+0x102/0x170 [ 3022.217694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.217694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.217694][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.217694][ T72] netlink_unicast+0x449/0x710 [ 3022.217694][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.217694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.217694][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.217694][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.217694][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.217694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.217694][ T72] [ 3022.219386][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3022.219386][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3022.219386][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3022.219386][ T72] ipv6_find_idev+0x102/0x170 [ 3022.219386][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3022.219386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3022.219386][ T72] netlink_rcv_skb+0x130/0x360 [ 3022.219386][ T72] netlink_unicast+0x449/0x710 [ 3022.219386][ T72] netlink_sendmsg+0x723/0xbe0 [ 3022.219386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3022.219386][ T72] ___sys_sendmsg+0xee/0x170 [ 3022.219386][ T72] __sys_sendmsg+0xcd/0x170 [ 3022.219386][ T72] do_syscall_64+0xc6/0x1e0 [ 3022.219386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3022.219386][ T72] [ 3032.462871][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3032.463333][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3032.463333][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.463333][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.463333][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.463333][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.463333][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.463333][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.463333][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.463333][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.463333][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.463333][ T72] netlink_unicast+0x449/0x710 [ 3032.463333][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.463333][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.463333][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.463333][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.463333][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.463333][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.463333][ T72] [ 3032.465312][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3032.465312][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.465312][ T72] ipv6_find_idev+0x102/0x170 [ 3032.465312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.465312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.465312][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.465312][ T72] netlink_unicast+0x449/0x710 [ 3032.465312][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.465312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.465312][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.465312][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.465312][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.465312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.465312][ T72] [ 3032.466836][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3032.466836][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.466836][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.466836][ T72] ipv6_find_idev+0x102/0x170 [ 3032.466836][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.466836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.466836][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.466836][ T72] netlink_unicast+0x449/0x710 [ 3032.466836][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.466836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.466836][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.466836][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.466836][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.466836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.466836][ T72] [ 3032.468497][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3032.468778][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3032.468778][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.468778][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.468778][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.468778][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.468778][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.468778][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.468778][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.468778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.468778][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.468778][ T72] netlink_unicast+0x449/0x710 [ 3032.468778][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.468778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.468778][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.468778][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.468778][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.468778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.468778][ T72] [ 3032.470736][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3032.470736][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.470736][ T72] ipv6_find_idev+0x102/0x170 [ 3032.470736][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.470736][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.470736][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.470736][ T72] netlink_unicast+0x449/0x710 [ 3032.470736][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.470736][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.470736][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.470736][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.470736][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.470736][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.470736][ T72] [ 3032.472254][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3032.472254][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.472254][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.472254][ T72] ipv6_find_idev+0x102/0x170 [ 3032.472254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.472254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.472254][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.472254][ T72] netlink_unicast+0x449/0x710 [ 3032.472254][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.472254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.472254][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.472254][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.472254][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.472254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.472254][ T72] [ 3032.473906][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3032.474171][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3032.474171][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.474171][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.474171][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.474171][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.474171][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.474171][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.474171][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.474171][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.474171][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.474171][ T72] netlink_unicast+0x449/0x710 [ 3032.474171][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.474171][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.474171][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.474171][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.474171][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.474171][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.474171][ T72] [ 3032.476145][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3032.476145][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.476145][ T72] ipv6_find_idev+0x102/0x170 [ 3032.476145][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.476145][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.476145][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.476145][ T72] netlink_unicast+0x449/0x710 [ 3032.476145][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.476145][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.476145][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.476145][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.476145][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.476145][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.476145][ T72] [ 3032.477666][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3032.477666][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.477666][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.477666][ T72] ipv6_find_idev+0x102/0x170 [ 3032.477666][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.477666][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.477666][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.477666][ T72] netlink_unicast+0x449/0x710 [ 3032.477666][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.477666][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.477666][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.477666][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.477666][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.477666][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.477666][ T72] [ 3032.479314][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3032.479577][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3032.479577][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.479577][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.479577][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.479577][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.479577][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.479577][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.479577][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.479577][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.479577][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.479577][ T72] netlink_unicast+0x449/0x710 [ 3032.479577][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.479577][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.479577][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.479577][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.479577][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.479577][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.479577][ T72] [ 3032.481538][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3032.481538][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.481538][ T72] ipv6_find_idev+0x102/0x170 [ 3032.481538][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.481538][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.481538][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.481538][ T72] netlink_unicast+0x449/0x710 [ 3032.481538][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.481538][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.481538][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.481538][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.481538][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.481538][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.481538][ T72] [ 3032.483059][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3032.483059][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.483059][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.483059][ T72] ipv6_find_idev+0x102/0x170 [ 3032.483059][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.483059][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.483059][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.483059][ T72] netlink_unicast+0x449/0x710 [ 3032.483059][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.483059][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.483059][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.483059][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.483059][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.483059][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.483059][ T72] [ 3032.485131][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3032.485391][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3032.485391][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.485391][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.485391][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.485391][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.485391][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.485391][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.485391][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.485391][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.485391][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.485391][ T72] netlink_unicast+0x449/0x710 [ 3032.485391][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.485391][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.485391][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.485391][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.485391][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.485391][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.485391][ T72] [ 3032.487354][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3032.487354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.487354][ T72] ipv6_find_idev+0x102/0x170 [ 3032.487354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.487354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.487354][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.487354][ T72] netlink_unicast+0x449/0x710 [ 3032.487354][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.487354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.487354][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.487354][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.487354][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.487354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.487354][ T72] [ 3032.488869][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3032.488869][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.488869][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.488869][ T72] ipv6_find_idev+0x102/0x170 [ 3032.488869][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.488869][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.488869][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.488869][ T72] netlink_unicast+0x449/0x710 [ 3032.488869][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.488869][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.488869][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.488869][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.488869][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.488869][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.488869][ T72] [ 3032.490658][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3032.490973][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3032.490973][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.490973][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.490973][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.490973][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.490973][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.490973][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.490973][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.490973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.490973][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.490973][ T72] netlink_unicast+0x449/0x710 [ 3032.490973][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.490973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.490973][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.490973][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.490973][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.490973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.490973][ T72] [ 3032.492997][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3032.492997][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.492997][ T72] ipv6_find_idev+0x102/0x170 [ 3032.492997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.492997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.492997][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.492997][ T72] netlink_unicast+0x449/0x710 [ 3032.492997][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.492997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.492997][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.492997][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.492997][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.492997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.492997][ T72] [ 3032.494694][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3032.494694][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.494694][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.494694][ T72] ipv6_find_idev+0x102/0x170 [ 3032.494694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.494694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.494694][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.494694][ T72] netlink_unicast+0x449/0x710 [ 3032.494694][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.494694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.494694][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.494694][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.494694][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.494694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.494694][ T72] [ 3032.496623][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3032.496962][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3032.496962][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.496962][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.496962][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.496962][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.496962][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.496962][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.496962][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.496962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.496962][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.496962][ T72] netlink_unicast+0x449/0x710 [ 3032.496962][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.496962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.496962][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.496962][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.496962][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.496962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.496962][ T72] [ 3032.499104][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3032.499104][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.499104][ T72] ipv6_find_idev+0x102/0x170 [ 3032.499104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.499104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.499104][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.499104][ T72] netlink_unicast+0x449/0x710 [ 3032.499104][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.499104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.499104][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.499104][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.499104][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.499104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.499104][ T72] [ 3032.500807][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3032.500807][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.500807][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.500807][ T72] ipv6_find_idev+0x102/0x170 [ 3032.500807][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.500807][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.500807][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.500807][ T72] netlink_unicast+0x449/0x710 [ 3032.500807][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.500807][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.500807][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.500807][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.500807][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.500807][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.500807][ T72] [ 3032.502749][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3032.503012][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3032.503012][ T72] netdev_get_by_index+0x5e/0x80 [ 3032.503012][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3032.503012][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3032.503012][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3032.503012][ T72] ipv6_add_addr+0x411/0x2000 [ 3032.503012][ T72] inet6_addr_add+0x30e/0xa40 [ 3032.503012][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3032.503012][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.503012][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.503012][ T72] netlink_unicast+0x449/0x710 [ 3032.503012][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.503012][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.503012][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.503012][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.503012][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.503012][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.503012][ T72] [ 3032.505205][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3032.505205][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3032.505205][ T72] ipv6_find_idev+0x102/0x170 [ 3032.505205][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.505205][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.505205][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.505205][ T72] netlink_unicast+0x449/0x710 [ 3032.505205][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.505205][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.505205][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.505205][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.505205][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.505205][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.505205][ T72] [ 3032.506967][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3032.506967][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3032.506967][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3032.506967][ T72] ipv6_find_idev+0x102/0x170 [ 3032.506967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3032.506967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3032.506967][ T72] netlink_rcv_skb+0x130/0x360 [ 3032.506967][ T72] netlink_unicast+0x449/0x710 [ 3032.506967][ T72] netlink_sendmsg+0x723/0xbe0 [ 3032.506967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3032.506967][ T72] ___sys_sendmsg+0xee/0x170 [ 3032.506967][ T72] __sys_sendmsg+0xcd/0x170 [ 3032.506967][ T72] do_syscall_64+0xc6/0x1e0 [ 3032.506967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3032.506967][ T72] [ 3042.750830][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3042.751299][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3042.751299][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.751299][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.751299][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.751299][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.751299][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.751299][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.751299][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.751299][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.751299][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.751299][ T72] netlink_unicast+0x449/0x710 [ 3042.751299][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.751299][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.751299][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.751299][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.751299][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.751299][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.751299][ T72] [ 3042.753338][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3042.753338][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.753338][ T72] ipv6_find_idev+0x102/0x170 [ 3042.753338][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.753338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.753338][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.753338][ T72] netlink_unicast+0x449/0x710 [ 3042.753338][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.753338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.753338][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.753338][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.753338][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.753338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.753338][ T72] [ 3042.754857][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3042.754857][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.754857][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.754857][ T72] ipv6_find_idev+0x102/0x170 [ 3042.754857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.754857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.754857][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.754857][ T72] netlink_unicast+0x449/0x710 [ 3042.754857][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.754857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.754857][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.754857][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.754857][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.754857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.754857][ T72] [ 3042.756530][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3042.756820][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3042.756820][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.756820][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.756820][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.756820][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.756820][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.756820][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.756820][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.756820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.756820][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.756820][ T72] netlink_unicast+0x449/0x710 [ 3042.756820][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.756820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.756820][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.756820][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.756820][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.756820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.756820][ T72] [ 3042.758772][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3042.758772][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.758772][ T72] ipv6_find_idev+0x102/0x170 [ 3042.758772][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.758772][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.758772][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.758772][ T72] netlink_unicast+0x449/0x710 [ 3042.758772][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.758772][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.758772][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.758772][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.758772][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.758772][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.758772][ T72] [ 3042.760287][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3042.760287][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.760287][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.760287][ T72] ipv6_find_idev+0x102/0x170 [ 3042.760287][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.760287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.760287][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.760287][ T72] netlink_unicast+0x449/0x710 [ 3042.760287][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.760287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.760287][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.760287][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.760287][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.760287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.760287][ T72] [ 3042.761940][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3042.762197][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3042.762197][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.762197][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.762197][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.762197][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.762197][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.762197][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.762197][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.762197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.762197][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.762197][ T72] netlink_unicast+0x449/0x710 [ 3042.762197][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.762197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.762197][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.762197][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.762197][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.762197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.762197][ T72] [ 3042.764189][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3042.764189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.764189][ T72] ipv6_find_idev+0x102/0x170 [ 3042.764189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.764189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.764189][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.764189][ T72] netlink_unicast+0x449/0x710 [ 3042.764189][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.764189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.764189][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.764189][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.764189][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.764189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.764189][ T72] [ 3042.765694][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3042.765694][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.765694][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.765694][ T72] ipv6_find_idev+0x102/0x170 [ 3042.765694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.765694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.765694][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.765694][ T72] netlink_unicast+0x449/0x710 [ 3042.765694][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.765694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.765694][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.765694][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.765694][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.765694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.765694][ T72] [ 3042.767359][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3042.767625][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3042.767625][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.767625][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.767625][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.767625][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.767625][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.767625][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.767625][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.767625][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.767625][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.767625][ T72] netlink_unicast+0x449/0x710 [ 3042.767625][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.767625][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.767625][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.767625][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.767625][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.767625][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.767625][ T72] [ 3042.769583][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3042.769583][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.769583][ T72] ipv6_find_idev+0x102/0x170 [ 3042.769583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.769583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.769583][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.769583][ T72] netlink_unicast+0x449/0x710 [ 3042.769583][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.769583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.769583][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.769583][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.769583][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.769583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.769583][ T72] [ 3042.771087][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3042.771087][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.771087][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.771087][ T72] ipv6_find_idev+0x102/0x170 [ 3042.771087][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.771087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.771087][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.771087][ T72] netlink_unicast+0x449/0x710 [ 3042.771087][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.771087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.771087][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.771087][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.771087][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.771087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.771087][ T72] [ 3042.773152][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3042.773414][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3042.773414][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.773414][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.773414][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.773414][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.773414][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.773414][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.773414][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.773414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.773414][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.773414][ T72] netlink_unicast+0x449/0x710 [ 3042.773414][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.773414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.773414][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.773414][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.773414][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.773414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.773414][ T72] [ 3042.775363][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3042.775363][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.775363][ T72] ipv6_find_idev+0x102/0x170 [ 3042.775363][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.775363][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.775363][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.775363][ T72] netlink_unicast+0x449/0x710 [ 3042.775363][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.775363][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.775363][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.775363][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.775363][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.775363][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.775363][ T72] [ 3042.776872][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3042.776872][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.776872][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.776872][ T72] ipv6_find_idev+0x102/0x170 [ 3042.776872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.776872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.776872][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.776872][ T72] netlink_unicast+0x449/0x710 [ 3042.776872][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.776872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.776872][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.776872][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.776872][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.776872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.776872][ T72] [ 3042.778557][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3042.778878][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3042.778878][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.778878][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.778878][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.778878][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.778878][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.778878][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.778878][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.778878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.778878][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.778878][ T72] netlink_unicast+0x449/0x710 [ 3042.778878][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.778878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.778878][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.778878][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.778878][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.778878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.778878][ T72] [ 3042.780910][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3042.780910][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.780910][ T72] ipv6_find_idev+0x102/0x170 [ 3042.780910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.780910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.780910][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.780910][ T72] netlink_unicast+0x449/0x710 [ 3042.780910][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.780910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.780910][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.780910][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.780910][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.780910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.780910][ T72] [ 3042.782480][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3042.782480][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.782480][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.782480][ T72] ipv6_find_idev+0x102/0x170 [ 3042.782480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.782480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.782480][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.782480][ T72] netlink_unicast+0x449/0x710 [ 3042.782480][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.782480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.782480][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.782480][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.782480][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.782480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.782480][ T72] [ 3042.784290][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3042.784556][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3042.784556][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.784556][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.784556][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.784556][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.784556][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.784556][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.784556][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.784556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.784556][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.784556][ T72] netlink_unicast+0x449/0x710 [ 3042.784556][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.784556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.784556][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.784556][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.784556][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.784556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.784556][ T72] [ 3042.786642][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3042.786642][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.786642][ T72] ipv6_find_idev+0x102/0x170 [ 3042.786642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.786642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.786642][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.786642][ T72] netlink_unicast+0x449/0x710 [ 3042.786642][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.786642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.786642][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.786642][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.786642][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.786642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.786642][ T72] [ 3042.788220][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3042.788220][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.788220][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.788220][ T72] ipv6_find_idev+0x102/0x170 [ 3042.788220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.788220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.788220][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.788220][ T72] netlink_unicast+0x449/0x710 [ 3042.788220][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.788220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.788220][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.788220][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.788220][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.788220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.788220][ T72] [ 3042.790032][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3042.790299][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3042.790299][ T72] netdev_get_by_index+0x5e/0x80 [ 3042.790299][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3042.790299][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3042.790299][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3042.790299][ T72] ipv6_add_addr+0x411/0x2000 [ 3042.790299][ T72] inet6_addr_add+0x30e/0xa40 [ 3042.790299][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3042.790299][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.790299][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.790299][ T72] netlink_unicast+0x449/0x710 [ 3042.790299][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.790299][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.790299][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.790299][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.790299][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.790299][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.790299][ T72] [ 3042.792396][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3042.792396][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3042.792396][ T72] ipv6_find_idev+0x102/0x170 [ 3042.792396][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.792396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.792396][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.792396][ T72] netlink_unicast+0x449/0x710 [ 3042.792396][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.792396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.792396][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.792396][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.792396][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.792396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.792396][ T72] [ 3042.793964][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3042.793964][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3042.793964][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3042.793964][ T72] ipv6_find_idev+0x102/0x170 [ 3042.793964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3042.793964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3042.793964][ T72] netlink_rcv_skb+0x130/0x360 [ 3042.793964][ T72] netlink_unicast+0x449/0x710 [ 3042.793964][ T72] netlink_sendmsg+0x723/0xbe0 [ 3042.793964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3042.793964][ T72] ___sys_sendmsg+0xee/0x170 [ 3042.793964][ T72] __sys_sendmsg+0xcd/0x170 [ 3042.793964][ T72] do_syscall_64+0xc6/0x1e0 [ 3042.793964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3042.793964][ T72] [ 3053.038923][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3053.039395][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3053.039395][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.039395][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.039395][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.039395][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.039395][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.039395][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.039395][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.039395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.039395][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.039395][ T72] netlink_unicast+0x449/0x710 [ 3053.039395][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.039395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.039395][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.039395][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.039395][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.039395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.039395][ T72] [ 3053.041466][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3053.041466][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.041466][ T72] ipv6_find_idev+0x102/0x170 [ 3053.041466][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.041466][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.041466][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.041466][ T72] netlink_unicast+0x449/0x710 [ 3053.041466][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.041466][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.041466][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.041466][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.041466][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.041466][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.041466][ T72] [ 3053.043008][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3053.043008][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.043008][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.043008][ T72] ipv6_find_idev+0x102/0x170 [ 3053.043008][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.043008][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.043008][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.043008][ T72] netlink_unicast+0x449/0x710 [ 3053.043008][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.043008][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.043008][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.043008][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.043008][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.043008][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.043008][ T72] [ 3053.044666][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3053.044954][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3053.044954][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.044954][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.044954][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.044954][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.044954][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.044954][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.044954][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.044954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.044954][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.044954][ T72] netlink_unicast+0x449/0x710 [ 3053.044954][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.044954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.044954][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.044954][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.044954][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.044954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.044954][ T72] [ 3053.046927][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3053.046927][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.046927][ T72] ipv6_find_idev+0x102/0x170 [ 3053.046927][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.046927][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.046927][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.046927][ T72] netlink_unicast+0x449/0x710 [ 3053.046927][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.046927][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.046927][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.046927][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.046927][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.046927][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.046927][ T72] [ 3053.048442][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3053.048442][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.048442][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.048442][ T72] ipv6_find_idev+0x102/0x170 [ 3053.048442][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.048442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.048442][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.048442][ T72] netlink_unicast+0x449/0x710 [ 3053.048442][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.048442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.048442][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.048442][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.048442][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.048442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.048442][ T72] [ 3053.050090][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3053.050354][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3053.050354][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.050354][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.050354][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.050354][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.050354][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.050354][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.050354][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.050354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.050354][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.050354][ T72] netlink_unicast+0x449/0x710 [ 3053.050354][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.050354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.050354][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.050354][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.050354][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.050354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.050354][ T72] [ 3053.052315][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3053.052315][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.052315][ T72] ipv6_find_idev+0x102/0x170 [ 3053.052315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.052315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.052315][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.052315][ T72] netlink_unicast+0x449/0x710 [ 3053.052315][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.052315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.052315][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.052315][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.052315][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.052315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.052315][ T72] [ 3053.053828][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3053.053828][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.053828][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.053828][ T72] ipv6_find_idev+0x102/0x170 [ 3053.053828][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.053828][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.053828][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.053828][ T72] netlink_unicast+0x449/0x710 [ 3053.053828][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.053828][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.053828][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.053828][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.053828][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.053828][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.053828][ T72] [ 3053.055470][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3053.055729][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3053.055729][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.055729][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.055729][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.055729][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.055729][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.055729][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.055729][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.055729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.055729][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.055729][ T72] netlink_unicast+0x449/0x710 [ 3053.055729][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.055729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.055729][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.055729][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.055729][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.055729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.055729][ T72] [ 3053.057704][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3053.057704][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.057704][ T72] ipv6_find_idev+0x102/0x170 [ 3053.057704][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.057704][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.057704][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.057704][ T72] netlink_unicast+0x449/0x710 [ 3053.057704][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.057704][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.057704][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.057704][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.057704][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.057704][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.057704][ T72] [ 3053.059220][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3053.059220][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.059220][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.059220][ T72] ipv6_find_idev+0x102/0x170 [ 3053.059220][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.059220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.059220][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.059220][ T72] netlink_unicast+0x449/0x710 [ 3053.059220][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.059220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.059220][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.059220][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.059220][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.059220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.059220][ T72] [ 3053.061262][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3053.061518][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3053.061518][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.061518][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.061518][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.061518][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.061518][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.061518][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.061518][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.061518][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.061518][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.061518][ T72] netlink_unicast+0x449/0x710 [ 3053.061518][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.061518][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.061518][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.061518][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.061518][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.061518][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.061518][ T72] [ 3053.063472][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3053.063472][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.063472][ T72] ipv6_find_idev+0x102/0x170 [ 3053.063472][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.063472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.063472][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.063472][ T72] netlink_unicast+0x449/0x710 [ 3053.063472][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.063472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.063472][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.063472][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.063472][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.063472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.063472][ T72] [ 3053.064974][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3053.064974][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.064974][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.064974][ T72] ipv6_find_idev+0x102/0x170 [ 3053.064974][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.064974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.064974][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.064974][ T72] netlink_unicast+0x449/0x710 [ 3053.064974][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.064974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.064974][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.064974][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.064974][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.064974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.064974][ T72] [ 3053.066660][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3053.066993][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3053.066993][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.066993][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.066993][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.066993][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.066993][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.066993][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.066993][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.066993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.066993][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.066993][ T72] netlink_unicast+0x449/0x710 [ 3053.066993][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.066993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.066993][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.066993][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.066993][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.066993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.066993][ T72] [ 3053.068997][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3053.068997][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.068997][ T72] ipv6_find_idev+0x102/0x170 [ 3053.068997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.068997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.068997][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.068997][ T72] netlink_unicast+0x449/0x710 [ 3053.068997][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.068997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.068997][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.068997][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.068997][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.068997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.068997][ T72] [ 3053.070756][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3053.070756][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.070756][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.070756][ T72] ipv6_find_idev+0x102/0x170 [ 3053.070756][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.070756][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.070756][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.070756][ T72] netlink_unicast+0x449/0x710 [ 3053.070756][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.070756][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.070756][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.070756][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.070756][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.070756][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.070756][ T72] [ 3053.072649][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3053.072967][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3053.072967][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.072967][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.072967][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.072967][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.072967][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.072967][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.072967][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.072967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.072967][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.072967][ T72] netlink_unicast+0x449/0x710 [ 3053.072967][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.072967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.072967][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.072967][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.072967][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.072967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.072967][ T72] [ 3053.075100][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3053.075100][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.075100][ T72] ipv6_find_idev+0x102/0x170 [ 3053.075100][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.075100][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.075100][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.075100][ T72] netlink_unicast+0x449/0x710 [ 3053.075100][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.075100][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.075100][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.075100][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.075100][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.075100][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.075100][ T72] [ 3053.076794][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3053.076794][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.076794][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.076794][ T72] ipv6_find_idev+0x102/0x170 [ 3053.076794][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.076794][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.076794][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.076794][ T72] netlink_unicast+0x449/0x710 [ 3053.076794][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.076794][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.076794][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.076794][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.076794][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.076794][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.076794][ T72] [ 3053.078751][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3053.079020][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3053.079020][ T72] netdev_get_by_index+0x5e/0x80 [ 3053.079020][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3053.079020][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3053.079020][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3053.079020][ T72] ipv6_add_addr+0x411/0x2000 [ 3053.079020][ T72] inet6_addr_add+0x30e/0xa40 [ 3053.079020][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3053.079020][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.079020][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.079020][ T72] netlink_unicast+0x449/0x710 [ 3053.079020][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.079020][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.079020][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.079020][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.079020][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.079020][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.079020][ T72] [ 3053.081240][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3053.081240][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3053.081240][ T72] ipv6_find_idev+0x102/0x170 [ 3053.081240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.081240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.081240][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.081240][ T72] netlink_unicast+0x449/0x710 [ 3053.081240][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.081240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.081240][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.081240][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.081240][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.081240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.081240][ T72] [ 3053.082935][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3053.082935][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3053.082935][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3053.082935][ T72] ipv6_find_idev+0x102/0x170 [ 3053.082935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3053.082935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3053.082935][ T72] netlink_rcv_skb+0x130/0x360 [ 3053.082935][ T72] netlink_unicast+0x449/0x710 [ 3053.082935][ T72] netlink_sendmsg+0x723/0xbe0 [ 3053.082935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3053.082935][ T72] ___sys_sendmsg+0xee/0x170 [ 3053.082935][ T72] __sys_sendmsg+0xcd/0x170 [ 3053.082935][ T72] do_syscall_64+0xc6/0x1e0 [ 3053.082935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3053.082935][ T72] [ 3063.334985][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3063.335502][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3063.335502][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.335502][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.335502][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.335502][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.335502][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.335502][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.335502][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.335502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.335502][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.335502][ T72] netlink_unicast+0x449/0x710 [ 3063.335502][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.335502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.335502][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.335502][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.335502][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.335502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.335502][ T72] [ 3063.337521][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3063.337521][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.337521][ T72] ipv6_find_idev+0x102/0x170 [ 3063.337521][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.337521][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.337521][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.337521][ T72] netlink_unicast+0x449/0x710 [ 3063.337521][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.337521][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.337521][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.337521][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.337521][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.337521][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.337521][ T72] [ 3063.339039][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3063.339039][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.339039][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.339039][ T72] ipv6_find_idev+0x102/0x170 [ 3063.339039][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.339039][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.339039][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.339039][ T72] netlink_unicast+0x449/0x710 [ 3063.339039][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.339039][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.339039][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.339039][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.339039][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.339039][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.339039][ T72] [ 3063.340724][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3063.341003][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3063.341003][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.341003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.341003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.341003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.341003][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.341003][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.341003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.341003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.341003][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.341003][ T72] netlink_unicast+0x449/0x710 [ 3063.341003][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.341003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.341003][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.341003][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.341003][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.341003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.341003][ T72] [ 3063.342967][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3063.342967][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.342967][ T72] ipv6_find_idev+0x102/0x170 [ 3063.342967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.342967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.342967][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.342967][ T72] netlink_unicast+0x449/0x710 [ 3063.342967][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.342967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.342967][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.342967][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.342967][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.342967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.342967][ T72] [ 3063.344480][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3063.344480][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.344480][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.344480][ T72] ipv6_find_idev+0x102/0x170 [ 3063.344480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.344480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.344480][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.344480][ T72] netlink_unicast+0x449/0x710 [ 3063.344480][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.344480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.344480][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.344480][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.344480][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.344480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.344480][ T72] [ 3063.346150][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3063.346414][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3063.346414][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.346414][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.346414][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.346414][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.346414][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.346414][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.346414][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.346414][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.346414][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.346414][ T72] netlink_unicast+0x449/0x710 [ 3063.346414][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.346414][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.346414][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.346414][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.346414][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.346414][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.346414][ T72] [ 3063.348377][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3063.348377][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.348377][ T72] ipv6_find_idev+0x102/0x170 [ 3063.348377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.348377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.348377][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.348377][ T72] netlink_unicast+0x449/0x710 [ 3063.348377][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.348377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.348377][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.348377][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.348377][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.348377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.348377][ T72] [ 3063.349898][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3063.349898][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.349898][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.349898][ T72] ipv6_find_idev+0x102/0x170 [ 3063.349898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.349898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.349898][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.349898][ T72] netlink_unicast+0x449/0x710 [ 3063.349898][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.349898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.349898][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.349898][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.349898][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.349898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.349898][ T72] [ 3063.351551][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3063.352240][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3063.352240][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.352240][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.352240][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.352240][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.352240][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.352240][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.352240][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.352240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.352240][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.352240][ T72] netlink_unicast+0x449/0x710 [ 3063.352240][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.352240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.352240][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.352240][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.352240][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.352240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.352240][ T72] [ 3063.354196][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3063.354196][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.354196][ T72] ipv6_find_idev+0x102/0x170 [ 3063.354196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.354196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.354196][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.354196][ T72] netlink_unicast+0x449/0x710 [ 3063.354196][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.354196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.354196][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.354196][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.354196][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.354196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.354196][ T72] [ 3063.355706][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3063.355706][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.355706][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.355706][ T72] ipv6_find_idev+0x102/0x170 [ 3063.355706][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.355706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.355706][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.355706][ T72] netlink_unicast+0x449/0x710 [ 3063.355706][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.355706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.355706][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.355706][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.355706][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.355706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.355706][ T72] [ 3063.357401][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3063.357658][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3063.357658][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.357658][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.357658][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.357658][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.357658][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.357658][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.357658][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.357658][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.357658][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.357658][ T72] netlink_unicast+0x449/0x710 [ 3063.357658][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.357658][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.357658][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.357658][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.357658][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.357658][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.357658][ T72] [ 3063.359617][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3063.359617][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.359617][ T72] ipv6_find_idev+0x102/0x170 [ 3063.359617][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.359617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.359617][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.359617][ T72] netlink_unicast+0x449/0x710 [ 3063.359617][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.359617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.359617][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.359617][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.359617][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.359617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.359617][ T72] [ 3063.361127][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3063.361127][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.361127][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.361127][ T72] ipv6_find_idev+0x102/0x170 [ 3063.361127][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.361127][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.361127][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.361127][ T72] netlink_unicast+0x449/0x710 [ 3063.361127][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.361127][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.361127][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.361127][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.361127][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.361127][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.361127][ T72] [ 3063.362813][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3063.363072][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3063.363072][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.363072][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.363072][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.363072][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.363072][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.363072][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.363072][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.363072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.363072][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.363072][ T72] netlink_unicast+0x449/0x710 [ 3063.363072][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.363072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.363072][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.363072][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.363072][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.363072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.363072][ T72] [ 3063.365111][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3063.365111][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.365111][ T72] ipv6_find_idev+0x102/0x170 [ 3063.365111][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.365111][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.365111][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.365111][ T72] netlink_unicast+0x449/0x710 [ 3063.365111][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.365111][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.365111][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.365111][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.365111][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.365111][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.365111][ T72] [ 3063.366749][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3063.366749][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.366749][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.366749][ T72] ipv6_find_idev+0x102/0x170 [ 3063.366749][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.366749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.366749][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.366749][ T72] netlink_unicast+0x449/0x710 [ 3063.366749][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.366749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.366749][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.366749][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.366749][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.366749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.366749][ T72] [ 3063.368567][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3063.368880][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3063.368880][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.368880][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.368880][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.368880][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.368880][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.368880][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.368880][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.368880][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.368880][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.368880][ T72] netlink_unicast+0x449/0x710 [ 3063.368880][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.368880][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.368880][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.368880][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.368880][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.368880][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.368880][ T72] [ 3063.370899][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3063.370899][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.370899][ T72] ipv6_find_idev+0x102/0x170 [ 3063.370899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.370899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.370899][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.370899][ T72] netlink_unicast+0x449/0x710 [ 3063.370899][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.370899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.370899][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.370899][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.370899][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.370899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.370899][ T72] [ 3063.372538][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3063.372538][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.372538][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.372538][ T72] ipv6_find_idev+0x102/0x170 [ 3063.372538][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.372538][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.372538][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.372538][ T72] netlink_unicast+0x449/0x710 [ 3063.372538][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.372538][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.372538][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.372538][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.372538][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.372538][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.372538][ T72] [ 3063.374284][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3063.374559][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3063.374559][ T72] netdev_get_by_index+0x5e/0x80 [ 3063.374559][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3063.374559][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3063.374559][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3063.374559][ T72] ipv6_add_addr+0x411/0x2000 [ 3063.374559][ T72] inet6_addr_add+0x30e/0xa40 [ 3063.374559][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3063.374559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.374559][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.374559][ T72] netlink_unicast+0x449/0x710 [ 3063.374559][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.374559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.374559][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.374559][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.374559][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.374559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.374559][ T72] [ 3063.376644][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3063.376644][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3063.376644][ T72] ipv6_find_idev+0x102/0x170 [ 3063.376644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.376644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.376644][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.376644][ T72] netlink_unicast+0x449/0x710 [ 3063.376644][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.376644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.376644][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.376644][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.376644][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.376644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.376644][ T72] [ 3063.378311][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3063.378311][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3063.378311][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3063.378311][ T72] ipv6_find_idev+0x102/0x170 [ 3063.378311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3063.378311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3063.378311][ T72] netlink_rcv_skb+0x130/0x360 [ 3063.378311][ T72] netlink_unicast+0x449/0x710 [ 3063.378311][ T72] netlink_sendmsg+0x723/0xbe0 [ 3063.378311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3063.378311][ T72] ___sys_sendmsg+0xee/0x170 [ 3063.378311][ T72] __sys_sendmsg+0xcd/0x170 [ 3063.378311][ T72] do_syscall_64+0xc6/0x1e0 [ 3063.378311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3063.378311][ T72] [ 3073.630827][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3073.631310][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3073.631310][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.631310][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.631310][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.631310][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.631310][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.631310][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.631310][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.631310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.631310][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.631310][ T72] netlink_unicast+0x449/0x710 [ 3073.631310][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.631310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.631310][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.631310][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.631310][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.631310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.631310][ T72] [ 3073.633278][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3073.633278][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.633278][ T72] ipv6_find_idev+0x102/0x170 [ 3073.633278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.633278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.633278][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.633278][ T72] netlink_unicast+0x449/0x710 [ 3073.633278][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.633278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.633278][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.633278][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.633278][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.633278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.633278][ T72] [ 3073.634791][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3073.634791][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.634791][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.634791][ T72] ipv6_find_idev+0x102/0x170 [ 3073.634791][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.634791][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.634791][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.634791][ T72] netlink_unicast+0x449/0x710 [ 3073.634791][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.634791][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.634791][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.634791][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.634791][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.634791][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.634791][ T72] [ 3073.636459][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3073.636729][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3073.636729][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.636729][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.636729][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.636729][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.636729][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.636729][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.636729][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.636729][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.636729][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.636729][ T72] netlink_unicast+0x449/0x710 [ 3073.636729][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.636729][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.636729][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.636729][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.636729][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.636729][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.636729][ T72] [ 3073.638694][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3073.638694][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.638694][ T72] ipv6_find_idev+0x102/0x170 [ 3073.638694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.638694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.638694][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.638694][ T72] netlink_unicast+0x449/0x710 [ 3073.638694][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.638694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.638694][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.638694][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.638694][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.638694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.638694][ T72] [ 3073.640206][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3073.640206][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.640206][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.640206][ T72] ipv6_find_idev+0x102/0x170 [ 3073.640206][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.640206][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.640206][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.640206][ T72] netlink_unicast+0x449/0x710 [ 3073.640206][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.640206][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.640206][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.640206][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.640206][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.640206][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.640206][ T72] [ 3073.641861][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3073.642122][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3073.642122][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.642122][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.642122][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.642122][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.642122][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.642122][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.642122][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.642122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.642122][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.642122][ T72] netlink_unicast+0x449/0x710 [ 3073.642122][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.642122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.642122][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.642122][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.642122][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.642122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.642122][ T72] [ 3073.644085][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3073.644085][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.644085][ T72] ipv6_find_idev+0x102/0x170 [ 3073.644085][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.644085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.644085][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.644085][ T72] netlink_unicast+0x449/0x710 [ 3073.644085][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.644085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.644085][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.644085][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.644085][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.644085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.644085][ T72] [ 3073.645592][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3073.645592][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.645592][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.645592][ T72] ipv6_find_idev+0x102/0x170 [ 3073.645592][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.645592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.645592][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.645592][ T72] netlink_unicast+0x449/0x710 [ 3073.645592][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.645592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.645592][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.645592][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.645592][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.645592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.645592][ T72] [ 3073.647248][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3073.647509][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3073.647509][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.647509][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.647509][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.647509][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.647509][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.647509][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.647509][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.647509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.647509][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.647509][ T72] netlink_unicast+0x449/0x710 [ 3073.647509][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.647509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.647509][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.647509][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.647509][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.647509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.647509][ T72] [ 3073.649469][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3073.649469][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.649469][ T72] ipv6_find_idev+0x102/0x170 [ 3073.649469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.649469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.649469][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.649469][ T72] netlink_unicast+0x449/0x710 [ 3073.649469][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.649469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.649469][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.649469][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.649469][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.649469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.649469][ T72] [ 3073.650979][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3073.650979][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.650979][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.650979][ T72] ipv6_find_idev+0x102/0x170 [ 3073.650979][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.650979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.650979][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.650979][ T72] netlink_unicast+0x449/0x710 [ 3073.650979][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.650979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.650979][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.650979][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.650979][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.650979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.650979][ T72] [ 3073.653037][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3073.653298][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3073.653298][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.653298][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.653298][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.653298][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.653298][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.653298][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.653298][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.653298][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.653298][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.653298][ T72] netlink_unicast+0x449/0x710 [ 3073.653298][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.653298][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.653298][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.653298][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.653298][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.653298][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.653298][ T72] [ 3073.655261][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3073.655261][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.655261][ T72] ipv6_find_idev+0x102/0x170 [ 3073.655261][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.655261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.655261][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.655261][ T72] netlink_unicast+0x449/0x710 [ 3073.655261][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.655261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.655261][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.655261][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.655261][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.655261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.655261][ T72] [ 3073.656777][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3073.656777][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.656777][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.656777][ T72] ipv6_find_idev+0x102/0x170 [ 3073.656777][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.656777][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.656777][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.656777][ T72] netlink_unicast+0x449/0x710 [ 3073.656777][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.656777][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.656777][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.656777][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.656777][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.656777][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.656777][ T72] [ 3073.658463][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3073.658726][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3073.658726][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.658726][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.658726][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.658726][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.658726][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.658726][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.658726][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.658726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.658726][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.658726][ T72] netlink_unicast+0x449/0x710 [ 3073.658726][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.658726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.658726][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.658726][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.658726][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.658726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.658726][ T72] [ 3073.661716][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3073.661716][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.661716][ T72] ipv6_find_idev+0x102/0x170 [ 3073.661716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.661716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.661716][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.661716][ T72] netlink_unicast+0x449/0x710 [ 3073.661716][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.661716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.661716][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.661716][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.661716][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.661716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.661716][ T72] [ 3073.663400][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3073.663400][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.663400][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.663400][ T72] ipv6_find_idev+0x102/0x170 [ 3073.663400][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.663400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.663400][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.663400][ T72] netlink_unicast+0x449/0x710 [ 3073.663400][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.663400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.663400][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.663400][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.663400][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.663400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.663400][ T72] [ 3073.665328][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3073.665592][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3073.665592][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.665592][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.665592][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.665592][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.665592][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.665592][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.665592][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.665592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.665592][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.665592][ T72] netlink_unicast+0x449/0x710 [ 3073.665592][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.665592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.665592][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.665592][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.665592][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.665592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.665592][ T72] [ 3073.667813][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3073.667813][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.667813][ T72] ipv6_find_idev+0x102/0x170 [ 3073.667813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.667813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.667813][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.667813][ T72] netlink_unicast+0x449/0x710 [ 3073.667813][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.667813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.667813][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.667813][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.667813][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.667813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.667813][ T72] [ 3073.669504][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3073.669504][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.669504][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.669504][ T72] ipv6_find_idev+0x102/0x170 [ 3073.669504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.669504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.669504][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.669504][ T72] netlink_unicast+0x449/0x710 [ 3073.669504][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.669504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.669504][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.669504][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.669504][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.669504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.669504][ T72] [ 3073.671377][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3073.671637][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3073.671637][ T72] netdev_get_by_index+0x5e/0x80 [ 3073.671637][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3073.671637][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3073.671637][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3073.671637][ T72] ipv6_add_addr+0x411/0x2000 [ 3073.671637][ T72] inet6_addr_add+0x30e/0xa40 [ 3073.671637][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3073.671637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.671637][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.671637][ T72] netlink_unicast+0x449/0x710 [ 3073.671637][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.671637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.671637][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.671637][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.671637][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.671637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.671637][ T72] [ 3073.673860][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3073.673860][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3073.673860][ T72] ipv6_find_idev+0x102/0x170 [ 3073.673860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.673860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.673860][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.673860][ T72] netlink_unicast+0x449/0x710 [ 3073.673860][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.673860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.673860][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.673860][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.673860][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.673860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.673860][ T72] [ 3073.675614][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3073.675614][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3073.675614][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3073.675614][ T72] ipv6_find_idev+0x102/0x170 [ 3073.675614][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3073.675614][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3073.675614][ T72] netlink_rcv_skb+0x130/0x360 [ 3073.675614][ T72] netlink_unicast+0x449/0x710 [ 3073.675614][ T72] netlink_sendmsg+0x723/0xbe0 [ 3073.675614][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3073.675614][ T72] ___sys_sendmsg+0xee/0x170 [ 3073.675614][ T72] __sys_sendmsg+0xcd/0x170 [ 3073.675614][ T72] do_syscall_64+0xc6/0x1e0 [ 3073.675614][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3073.675614][ T72] [ 3083.926879][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3083.927376][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3083.927376][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.927376][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.927376][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.927376][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.927376][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.927376][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.927376][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.927376][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.927376][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.927376][ T72] netlink_unicast+0x449/0x710 [ 3083.927376][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.927376][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.927376][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.927376][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.927376][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.927376][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.927376][ T72] [ 3083.929354][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3083.929354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.929354][ T72] ipv6_find_idev+0x102/0x170 [ 3083.929354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.929354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.929354][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.929354][ T72] netlink_unicast+0x449/0x710 [ 3083.929354][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.929354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.929354][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.929354][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.929354][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.929354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.929354][ T72] [ 3083.931260][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3083.931260][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.931260][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.931260][ T72] ipv6_find_idev+0x102/0x170 [ 3083.931260][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.931260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.931260][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.931260][ T72] netlink_unicast+0x449/0x710 [ 3083.931260][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.931260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.931260][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.931260][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.931260][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.931260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.931260][ T72] [ 3083.932939][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3083.933214][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3083.933214][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.933214][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.933214][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.933214][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.933214][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.933214][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.933214][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.933214][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.933214][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.933214][ T72] netlink_unicast+0x449/0x710 [ 3083.933214][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.933214][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.933214][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.933214][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.933214][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.933214][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.933214][ T72] [ 3083.935175][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3083.935175][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.935175][ T72] ipv6_find_idev+0x102/0x170 [ 3083.935175][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.935175][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.935175][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.935175][ T72] netlink_unicast+0x449/0x710 [ 3083.935175][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.935175][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.935175][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.935175][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.935175][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.935175][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.935175][ T72] [ 3083.936693][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3083.936693][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.936693][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.936693][ T72] ipv6_find_idev+0x102/0x170 [ 3083.936693][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.936693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.936693][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.936693][ T72] netlink_unicast+0x449/0x710 [ 3083.936693][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.936693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.936693][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.936693][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.936693][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.936693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.936693][ T72] [ 3083.938355][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3083.938616][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3083.938616][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.938616][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.938616][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.938616][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.938616][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.938616][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.938616][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.938616][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.938616][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.938616][ T72] netlink_unicast+0x449/0x710 [ 3083.938616][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.938616][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.938616][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.938616][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.938616][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.938616][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.938616][ T72] [ 3083.940579][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3083.940579][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.940579][ T72] ipv6_find_idev+0x102/0x170 [ 3083.940579][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.940579][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.940579][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.940579][ T72] netlink_unicast+0x449/0x710 [ 3083.940579][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.940579][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.940579][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.940579][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.940579][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.940579][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.940579][ T72] [ 3083.942088][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3083.942088][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.942088][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.942088][ T72] ipv6_find_idev+0x102/0x170 [ 3083.942088][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.942088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.942088][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.942088][ T72] netlink_unicast+0x449/0x710 [ 3083.942088][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.942088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.942088][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.942088][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.942088][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.942088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.942088][ T72] [ 3083.943751][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3083.944010][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3083.944010][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.944010][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.944010][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.944010][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.944010][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.944010][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.944010][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.944010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.944010][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.944010][ T72] netlink_unicast+0x449/0x710 [ 3083.944010][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.944010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.944010][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.944010][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.944010][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.944010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.944010][ T72] [ 3083.945965][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3083.945965][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.945965][ T72] ipv6_find_idev+0x102/0x170 [ 3083.945965][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.945965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.945965][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.945965][ T72] netlink_unicast+0x449/0x710 [ 3083.945965][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.945965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.945965][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.945965][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.945965][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.945965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.945965][ T72] [ 3083.947481][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3083.947481][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.947481][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.947481][ T72] ipv6_find_idev+0x102/0x170 [ 3083.947481][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.947481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.947481][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.947481][ T72] netlink_unicast+0x449/0x710 [ 3083.947481][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.947481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.947481][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.947481][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.947481][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.947481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.947481][ T72] [ 3083.949521][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3083.949780][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3083.949780][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.949780][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.949780][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.949780][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.949780][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.949780][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.949780][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.949780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.949780][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.949780][ T72] netlink_unicast+0x449/0x710 [ 3083.949780][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.949780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.949780][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.949780][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.949780][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.949780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.949780][ T72] [ 3083.951730][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3083.951730][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.951730][ T72] ipv6_find_idev+0x102/0x170 [ 3083.951730][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.951730][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.951730][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.951730][ T72] netlink_unicast+0x449/0x710 [ 3083.951730][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.951730][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.951730][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.951730][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.951730][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.951730][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.951730][ T72] [ 3083.953233][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3083.953233][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.953233][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.953233][ T72] ipv6_find_idev+0x102/0x170 [ 3083.953233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.953233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.953233][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.953233][ T72] netlink_unicast+0x449/0x710 [ 3083.953233][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.953233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.953233][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.953233][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.953233][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.953233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.953233][ T72] [ 3083.955033][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3083.955292][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3083.955292][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.955292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.955292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.955292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.955292][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.955292][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.955292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.955292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.955292][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.955292][ T72] netlink_unicast+0x449/0x710 [ 3083.955292][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.955292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.955292][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.955292][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.955292][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.955292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.955292][ T72] [ 3083.957374][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3083.957374][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.957374][ T72] ipv6_find_idev+0x102/0x170 [ 3083.957374][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.957374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.957374][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.957374][ T72] netlink_unicast+0x449/0x710 [ 3083.957374][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.957374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.957374][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.957374][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.957374][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.957374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.957374][ T72] [ 3083.959121][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3083.959121][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.959121][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.959121][ T72] ipv6_find_idev+0x102/0x170 [ 3083.959121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.959121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.959121][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.959121][ T72] netlink_unicast+0x449/0x710 [ 3083.959121][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.959121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.959121][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.959121][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.959121][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.959121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.959121][ T72] [ 3083.960989][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3083.961264][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3083.961264][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.961264][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.961264][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.961264][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.961264][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.961264][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.961264][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.961264][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.961264][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.961264][ T72] netlink_unicast+0x449/0x710 [ 3083.961264][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.961264][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.961264][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.961264][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.961264][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.961264][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.961264][ T72] [ 3083.963464][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3083.963464][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.963464][ T72] ipv6_find_idev+0x102/0x170 [ 3083.963464][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.963464][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.963464][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.963464][ T72] netlink_unicast+0x449/0x710 [ 3083.963464][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.963464][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.963464][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.963464][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.963464][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.963464][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.963464][ T72] [ 3083.965151][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3083.965151][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.965151][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.965151][ T72] ipv6_find_idev+0x102/0x170 [ 3083.965151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.965151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.965151][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.965151][ T72] netlink_unicast+0x449/0x710 [ 3083.965151][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.965151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.965151][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.965151][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.965151][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.965151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.965151][ T72] [ 3083.967013][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3083.967277][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3083.967277][ T72] netdev_get_by_index+0x5e/0x80 [ 3083.967277][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3083.967277][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3083.967277][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3083.967277][ T72] ipv6_add_addr+0x411/0x2000 [ 3083.967277][ T72] inet6_addr_add+0x30e/0xa40 [ 3083.967277][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3083.967277][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.967277][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.967277][ T72] netlink_unicast+0x449/0x710 [ 3083.967277][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.967277][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.967277][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.967277][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.967277][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.967277][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.967277][ T72] [ 3083.969548][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3083.969548][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3083.969548][ T72] ipv6_find_idev+0x102/0x170 [ 3083.969548][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.969548][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.969548][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.969548][ T72] netlink_unicast+0x449/0x710 [ 3083.969548][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.969548][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.969548][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.969548][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.969548][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.969548][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.969548][ T72] [ 3083.971241][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3083.971241][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3083.971241][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3083.971241][ T72] ipv6_find_idev+0x102/0x170 [ 3083.971241][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3083.971241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3083.971241][ T72] netlink_rcv_skb+0x130/0x360 [ 3083.971241][ T72] netlink_unicast+0x449/0x710 [ 3083.971241][ T72] netlink_sendmsg+0x723/0xbe0 [ 3083.971241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3083.971241][ T72] ___sys_sendmsg+0xee/0x170 [ 3083.971241][ T72] __sys_sendmsg+0xcd/0x170 [ 3083.971241][ T72] do_syscall_64+0xc6/0x1e0 [ 3083.971241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3083.971241][ T72] [ 3094.222848][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3094.223317][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3094.223317][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.223317][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.223317][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.223317][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.223317][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.223317][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.223317][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.223317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.223317][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.223317][ T72] netlink_unicast+0x449/0x710 [ 3094.223317][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.223317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.223317][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.223317][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.223317][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.223317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.223317][ T72] [ 3094.225302][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3094.225302][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.225302][ T72] ipv6_find_idev+0x102/0x170 [ 3094.225302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.225302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.225302][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.225302][ T72] netlink_unicast+0x449/0x710 [ 3094.225302][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.225302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.225302][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.225302][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.225302][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.225302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.225302][ T72] [ 3094.226833][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3094.226833][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.226833][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.226833][ T72] ipv6_find_idev+0x102/0x170 [ 3094.226833][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.226833][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.226833][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.226833][ T72] netlink_unicast+0x449/0x710 [ 3094.226833][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.226833][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.226833][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.226833][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.226833][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.226833][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.226833][ T72] [ 3094.228496][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3094.228765][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3094.228765][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.228765][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.228765][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.228765][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.228765][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.228765][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.228765][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.228765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.228765][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.228765][ T72] netlink_unicast+0x449/0x710 [ 3094.228765][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.228765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.228765][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.228765][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.228765][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.228765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.228765][ T72] [ 3094.230718][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3094.230718][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.230718][ T72] ipv6_find_idev+0x102/0x170 [ 3094.230718][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.230718][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.230718][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.230718][ T72] netlink_unicast+0x449/0x710 [ 3094.230718][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.230718][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.230718][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.230718][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.230718][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.230718][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.230718][ T72] [ 3094.232230][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3094.232230][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.232230][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.232230][ T72] ipv6_find_idev+0x102/0x170 [ 3094.232230][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.232230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.232230][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.232230][ T72] netlink_unicast+0x449/0x710 [ 3094.232230][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.232230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.232230][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.232230][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.232230][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.232230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.232230][ T72] [ 3094.233899][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3094.234161][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3094.234161][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.234161][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.234161][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.234161][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.234161][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.234161][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.234161][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.234161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.234161][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.234161][ T72] netlink_unicast+0x449/0x710 [ 3094.234161][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.234161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.234161][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.234161][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.234161][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.234161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.234161][ T72] [ 3094.236123][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3094.236123][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.236123][ T72] ipv6_find_idev+0x102/0x170 [ 3094.236123][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.236123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.236123][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.236123][ T72] netlink_unicast+0x449/0x710 [ 3094.236123][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.236123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.236123][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.236123][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.236123][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.236123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.236123][ T72] [ 3094.237642][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3094.237642][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.237642][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.237642][ T72] ipv6_find_idev+0x102/0x170 [ 3094.237642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.237642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.237642][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.237642][ T72] netlink_unicast+0x449/0x710 [ 3094.237642][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.237642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.237642][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.237642][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.237642][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.237642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.237642][ T72] [ 3094.239298][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3094.239566][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3094.239566][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.239566][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.239566][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.239566][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.239566][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.239566][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.239566][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.239566][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.239566][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.239566][ T72] netlink_unicast+0x449/0x710 [ 3094.239566][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.239566][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.239566][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.239566][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.239566][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.239566][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.239566][ T72] [ 3094.241545][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3094.241545][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.241545][ T72] ipv6_find_idev+0x102/0x170 [ 3094.241545][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.241545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.241545][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.241545][ T72] netlink_unicast+0x449/0x710 [ 3094.241545][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.241545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.241545][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.241545][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.241545][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.241545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.241545][ T72] [ 3094.243057][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3094.243057][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.243057][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.243057][ T72] ipv6_find_idev+0x102/0x170 [ 3094.243057][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.243057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.243057][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.243057][ T72] netlink_unicast+0x449/0x710 [ 3094.243057][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.243057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.243057][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.243057][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.243057][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.243057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.243057][ T72] [ 3094.245125][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3094.245384][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3094.245384][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.245384][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.245384][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.245384][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.245384][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.245384][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.245384][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.245384][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.245384][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.245384][ T72] netlink_unicast+0x449/0x710 [ 3094.245384][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.245384][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.245384][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.245384][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.245384][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.245384][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.245384][ T72] [ 3094.247342][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3094.247342][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.247342][ T72] ipv6_find_idev+0x102/0x170 [ 3094.247342][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.247342][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.247342][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.247342][ T72] netlink_unicast+0x449/0x710 [ 3094.247342][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.247342][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.247342][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.247342][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.247342][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.247342][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.247342][ T72] [ 3094.248851][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3094.248851][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.248851][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.248851][ T72] ipv6_find_idev+0x102/0x170 [ 3094.248851][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.248851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.248851][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.248851][ T72] netlink_unicast+0x449/0x710 [ 3094.248851][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.248851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.248851][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.248851][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.248851][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.248851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.248851][ T72] [ 3094.250546][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3094.250857][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3094.250857][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.250857][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.250857][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.250857][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.250857][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.250857][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.250857][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.250857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.250857][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.250857][ T72] netlink_unicast+0x449/0x710 [ 3094.250857][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.250857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.250857][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.250857][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.250857][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.250857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.250857][ T72] [ 3094.252890][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3094.252890][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.252890][ T72] ipv6_find_idev+0x102/0x170 [ 3094.252890][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.252890][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.252890][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.252890][ T72] netlink_unicast+0x449/0x710 [ 3094.252890][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.252890][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.252890][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.252890][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.252890][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.252890][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.252890][ T72] [ 3094.254522][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3094.254522][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.254522][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.254522][ T72] ipv6_find_idev+0x102/0x170 [ 3094.254522][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.254522][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.254522][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.254522][ T72] netlink_unicast+0x449/0x710 [ 3094.254522][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.254522][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.254522][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.254522][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.254522][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.254522][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.254522][ T72] [ 3094.256340][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3094.256603][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3094.256603][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.256603][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.256603][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.256603][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.256603][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.256603][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.256603][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.256603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.256603][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.256603][ T72] netlink_unicast+0x449/0x710 [ 3094.256603][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.256603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.256603][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.256603][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.256603][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.256603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.256603][ T72] [ 3094.258686][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3094.258686][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.258686][ T72] ipv6_find_idev+0x102/0x170 [ 3094.258686][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.258686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.258686][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.258686][ T72] netlink_unicast+0x449/0x710 [ 3094.258686][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.258686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.258686][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.258686][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.258686][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.258686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.258686][ T72] [ 3094.260256][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3094.260256][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.260256][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.260256][ T72] ipv6_find_idev+0x102/0x170 [ 3094.260256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.260256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.260256][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.260256][ T72] netlink_unicast+0x449/0x710 [ 3094.260256][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.260256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.260256][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.260256][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.260256][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.260256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.260256][ T72] [ 3094.262067][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3094.262325][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3094.262325][ T72] netdev_get_by_index+0x5e/0x80 [ 3094.262325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3094.262325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3094.262325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3094.262325][ T72] ipv6_add_addr+0x411/0x2000 [ 3094.262325][ T72] inet6_addr_add+0x30e/0xa40 [ 3094.262325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3094.262325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.262325][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.262325][ T72] netlink_unicast+0x449/0x710 [ 3094.262325][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.262325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.262325][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.262325][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.262325][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.262325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.262325][ T72] [ 3094.264344][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3094.264344][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3094.264344][ T72] ipv6_find_idev+0x102/0x170 [ 3094.264344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.264344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.264344][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.264344][ T72] netlink_unicast+0x449/0x710 [ 3094.264344][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.264344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.264344][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.264344][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.264344][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.264344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.264344][ T72] [ 3094.266005][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3094.266005][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3094.266005][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3094.266005][ T72] ipv6_find_idev+0x102/0x170 [ 3094.266005][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3094.266005][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3094.266005][ T72] netlink_rcv_skb+0x130/0x360 [ 3094.266005][ T72] netlink_unicast+0x449/0x710 [ 3094.266005][ T72] netlink_sendmsg+0x723/0xbe0 [ 3094.266005][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3094.266005][ T72] ___sys_sendmsg+0xee/0x170 [ 3094.266005][ T72] __sys_sendmsg+0xcd/0x170 [ 3094.266005][ T72] do_syscall_64+0xc6/0x1e0 [ 3094.266005][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3094.266005][ T72] [ 3104.518921][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3104.519332][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3104.519332][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.519332][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.519332][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.519332][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.519332][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.519332][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.519332][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.519332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.519332][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.519332][ T72] netlink_unicast+0x449/0x710 [ 3104.519332][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.519332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.519332][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.519332][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.519332][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.519332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.519332][ T72] [ 3104.521335][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3104.521335][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.521335][ T72] ipv6_find_idev+0x102/0x170 [ 3104.521335][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.521335][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.521335][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.521335][ T72] netlink_unicast+0x449/0x710 [ 3104.521335][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.521335][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.521335][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.521335][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.521335][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.521335][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.521335][ T72] [ 3104.522843][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3104.522843][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.522843][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.522843][ T72] ipv6_find_idev+0x102/0x170 [ 3104.522843][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.522843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.522843][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.522843][ T72] netlink_unicast+0x449/0x710 [ 3104.522843][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.522843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.522843][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.522843][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.522843][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.522843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.522843][ T72] [ 3104.524499][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3104.524816][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3104.524816][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.524816][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.524816][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.524816][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.524816][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.524816][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.524816][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.524816][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.524816][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.524816][ T72] netlink_unicast+0x449/0x710 [ 3104.524816][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.524816][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.524816][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.524816][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.524816][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.524816][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.524816][ T72] [ 3104.526786][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3104.526786][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.526786][ T72] ipv6_find_idev+0x102/0x170 [ 3104.526786][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.526786][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.526786][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.526786][ T72] netlink_unicast+0x449/0x710 [ 3104.526786][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.526786][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.526786][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.526786][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.526786][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.526786][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.526786][ T72] [ 3104.528315][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3104.528315][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.528315][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.528315][ T72] ipv6_find_idev+0x102/0x170 [ 3104.528315][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.528315][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.528315][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.528315][ T72] netlink_unicast+0x449/0x710 [ 3104.528315][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.528315][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.528315][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.528315][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.528315][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.528315][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.528315][ T72] [ 3104.529974][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3104.530249][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3104.530249][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.530249][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.530249][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.530249][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.530249][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.530249][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.530249][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.530249][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.530249][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.530249][ T72] netlink_unicast+0x449/0x710 [ 3104.530249][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.530249][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.530249][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.530249][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.530249][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.530249][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.530249][ T72] [ 3104.532216][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3104.532216][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.532216][ T72] ipv6_find_idev+0x102/0x170 [ 3104.532216][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.532216][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.532216][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.532216][ T72] netlink_unicast+0x449/0x710 [ 3104.532216][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.532216][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.532216][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.532216][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.532216][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.532216][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.532216][ T72] [ 3104.533726][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3104.533726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.533726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.533726][ T72] ipv6_find_idev+0x102/0x170 [ 3104.533726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.533726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.533726][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.533726][ T72] netlink_unicast+0x449/0x710 [ 3104.533726][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.533726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.533726][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.533726][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.533726][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.533726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.533726][ T72] [ 3104.535379][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3104.535661][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3104.535661][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.535661][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.535661][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.535661][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.535661][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.535661][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.535661][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.535661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.535661][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.535661][ T72] netlink_unicast+0x449/0x710 [ 3104.535661][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.535661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.535661][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.535661][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.535661][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.535661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.535661][ T72] [ 3104.537624][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3104.537624][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.537624][ T72] ipv6_find_idev+0x102/0x170 [ 3104.537624][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.537624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.537624][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.537624][ T72] netlink_unicast+0x449/0x710 [ 3104.537624][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.537624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.537624][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.537624][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.537624][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.537624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.537624][ T72] [ 3104.539137][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3104.539137][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.539137][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.539137][ T72] ipv6_find_idev+0x102/0x170 [ 3104.539137][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.539137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.539137][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.539137][ T72] netlink_unicast+0x449/0x710 [ 3104.539137][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.539137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.539137][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.539137][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.539137][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.539137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.539137][ T72] [ 3104.541209][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3104.541472][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3104.541472][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.541472][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.541472][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.541472][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.541472][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.541472][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.541472][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.541472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.541472][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.541472][ T72] netlink_unicast+0x449/0x710 [ 3104.541472][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.541472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.541472][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.541472][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.541472][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.541472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.541472][ T72] [ 3104.543437][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3104.543437][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.543437][ T72] ipv6_find_idev+0x102/0x170 [ 3104.543437][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.543437][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.543437][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.543437][ T72] netlink_unicast+0x449/0x710 [ 3104.543437][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.543437][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.543437][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.543437][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.543437][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.543437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.543437][ T72] [ 3104.544993][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3104.544993][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.544993][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.544993][ T72] ipv6_find_idev+0x102/0x170 [ 3104.544993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.544993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.544993][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.544993][ T72] netlink_unicast+0x449/0x710 [ 3104.544993][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.544993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.544993][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.544993][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.544993][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.544993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.544993][ T72] [ 3104.546731][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3104.547083][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3104.547083][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.547083][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.547083][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.547083][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.547083][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.547083][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.547083][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.547083][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.547083][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.547083][ T72] netlink_unicast+0x449/0x710 [ 3104.547083][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.547083][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.547083][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.547083][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.547083][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.547083][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.547083][ T72] [ 3104.549110][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3104.549110][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.549110][ T72] ipv6_find_idev+0x102/0x170 [ 3104.549110][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.549110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.549110][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.549110][ T72] netlink_unicast+0x449/0x710 [ 3104.549110][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.549110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.549110][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.549110][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.549110][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.549110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.549110][ T72] [ 3104.550813][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3104.550813][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.550813][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.550813][ T72] ipv6_find_idev+0x102/0x170 [ 3104.550813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.550813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.550813][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.550813][ T72] netlink_unicast+0x449/0x710 [ 3104.550813][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.550813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.550813][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.550813][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.550813][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.550813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.550813][ T72] [ 3104.552904][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3104.553210][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3104.553210][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.553210][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.553210][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.553210][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.553210][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.553210][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.553210][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.553210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.553210][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.553210][ T72] netlink_unicast+0x449/0x710 [ 3104.553210][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.553210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.553210][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.553210][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.553210][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.553210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.553210][ T72] [ 3104.555238][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3104.555238][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.555238][ T72] ipv6_find_idev+0x102/0x170 [ 3104.555238][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.555238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.555238][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.555238][ T72] netlink_unicast+0x449/0x710 [ 3104.555238][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.555238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.555238][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.555238][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.555238][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.555238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.555238][ T72] [ 3104.556939][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3104.556939][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.556939][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.556939][ T72] ipv6_find_idev+0x102/0x170 [ 3104.556939][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.556939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.556939][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.556939][ T72] netlink_unicast+0x449/0x710 [ 3104.556939][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.556939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.556939][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.556939][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.556939][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.556939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.556939][ T72] [ 3104.558847][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3104.559117][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3104.559117][ T72] netdev_get_by_index+0x5e/0x80 [ 3104.559117][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3104.559117][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3104.559117][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3104.559117][ T72] ipv6_add_addr+0x411/0x2000 [ 3104.559117][ T72] inet6_addr_add+0x30e/0xa40 [ 3104.559117][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3104.559117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.559117][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.559117][ T72] netlink_unicast+0x449/0x710 [ 3104.559117][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.559117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.559117][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.559117][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.559117][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.559117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.559117][ T72] [ 3104.561378][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3104.561378][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3104.561378][ T72] ipv6_find_idev+0x102/0x170 [ 3104.561378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.561378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.561378][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.561378][ T72] netlink_unicast+0x449/0x710 [ 3104.561378][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.561378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.561378][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.561378][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.561378][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.561378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.561378][ T72] [ 3104.563071][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3104.563071][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3104.563071][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3104.563071][ T72] ipv6_find_idev+0x102/0x170 [ 3104.563071][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3104.563071][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3104.563071][ T72] netlink_rcv_skb+0x130/0x360 [ 3104.563071][ T72] netlink_unicast+0x449/0x710 [ 3104.563071][ T72] netlink_sendmsg+0x723/0xbe0 [ 3104.563071][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3104.563071][ T72] ___sys_sendmsg+0xee/0x170 [ 3104.563071][ T72] __sys_sendmsg+0xcd/0x170 [ 3104.563071][ T72] do_syscall_64+0xc6/0x1e0 [ 3104.563071][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3104.563071][ T72] [ 3114.782887][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3114.783307][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3114.783307][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.783307][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.783307][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.783307][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.783307][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.783307][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.783307][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.783307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.783307][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.783307][ T72] netlink_unicast+0x449/0x710 [ 3114.783307][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.783307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.783307][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.783307][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.783307][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.783307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.783307][ T72] [ 3114.785368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3114.785368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.785368][ T72] ipv6_find_idev+0x102/0x170 [ 3114.785368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.785368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.785368][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.785368][ T72] netlink_unicast+0x449/0x710 [ 3114.785368][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.785368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.785368][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.785368][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.785368][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.785368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.785368][ T72] [ 3114.786903][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3114.786903][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.786903][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.786903][ T72] ipv6_find_idev+0x102/0x170 [ 3114.786903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.786903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.786903][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.786903][ T72] netlink_unicast+0x449/0x710 [ 3114.786903][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.786903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.786903][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.786903][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.786903][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.786903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.786903][ T72] [ 3114.788569][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3114.788856][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3114.788856][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.788856][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.788856][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.788856][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.788856][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.788856][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.788856][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.788856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.788856][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.788856][ T72] netlink_unicast+0x449/0x710 [ 3114.788856][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.788856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.788856][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.788856][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.788856][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.788856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.788856][ T72] [ 3114.790806][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3114.790806][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.790806][ T72] ipv6_find_idev+0x102/0x170 [ 3114.790806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.790806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.790806][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.790806][ T72] netlink_unicast+0x449/0x710 [ 3114.790806][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.790806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.790806][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.790806][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.790806][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.790806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.790806][ T72] [ 3114.792317][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3114.792317][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.792317][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.792317][ T72] ipv6_find_idev+0x102/0x170 [ 3114.792317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.792317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.792317][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.792317][ T72] netlink_unicast+0x449/0x710 [ 3114.792317][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.792317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.792317][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.792317][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.792317][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.792317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.792317][ T72] [ 3114.793975][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3114.794234][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3114.794234][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.794234][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.794234][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.794234][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.794234][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.794234][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.794234][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.794234][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.794234][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.794234][ T72] netlink_unicast+0x449/0x710 [ 3114.794234][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.794234][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.794234][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.794234][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.794234][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.794234][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.794234][ T72] [ 3114.796200][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3114.796200][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.796200][ T72] ipv6_find_idev+0x102/0x170 [ 3114.796200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.796200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.796200][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.796200][ T72] netlink_unicast+0x449/0x710 [ 3114.796200][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.796200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.796200][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.796200][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.796200][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.796200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.796200][ T72] [ 3114.797726][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3114.797726][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.797726][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.797726][ T72] ipv6_find_idev+0x102/0x170 [ 3114.797726][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.797726][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.797726][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.797726][ T72] netlink_unicast+0x449/0x710 [ 3114.797726][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.797726][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.797726][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.797726][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.797726][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.797726][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.797726][ T72] [ 3114.799380][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3114.799637][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3114.799637][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.799637][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.799637][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.799637][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.799637][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.799637][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.799637][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.799637][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.799637][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.799637][ T72] netlink_unicast+0x449/0x710 [ 3114.799637][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.799637][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.799637][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.799637][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.799637][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.799637][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.799637][ T72] [ 3114.801600][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3114.801600][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.801600][ T72] ipv6_find_idev+0x102/0x170 [ 3114.801600][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.801600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.801600][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.801600][ T72] netlink_unicast+0x449/0x710 [ 3114.801600][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.801600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.801600][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.801600][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.801600][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.801600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.801600][ T72] [ 3114.803110][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3114.803110][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.803110][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.803110][ T72] ipv6_find_idev+0x102/0x170 [ 3114.803110][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.803110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.803110][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.803110][ T72] netlink_unicast+0x449/0x710 [ 3114.803110][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.803110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.803110][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.803110][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.803110][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.803110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.803110][ T72] [ 3114.805171][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3114.805433][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3114.805433][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.805433][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.805433][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.805433][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.805433][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.805433][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.805433][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.805433][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.805433][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.805433][ T72] netlink_unicast+0x449/0x710 [ 3114.805433][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.805433][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.805433][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.805433][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.805433][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.805433][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.805433][ T72] [ 3114.807392][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3114.807392][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.807392][ T72] ipv6_find_idev+0x102/0x170 [ 3114.807392][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.807392][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.807392][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.807392][ T72] netlink_unicast+0x449/0x710 [ 3114.807392][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.807392][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.807392][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.807392][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.807392][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.807392][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.807392][ T72] [ 3114.808897][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3114.808897][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.808897][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.808897][ T72] ipv6_find_idev+0x102/0x170 [ 3114.808897][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.808897][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.808897][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.808897][ T72] netlink_unicast+0x449/0x710 [ 3114.808897][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.808897][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.808897][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.808897][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.808897][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.808897][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.808897][ T72] [ 3114.810586][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3114.810898][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3114.810898][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.810898][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.810898][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.810898][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.810898][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.810898][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.810898][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.810898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.810898][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.810898][ T72] netlink_unicast+0x449/0x710 [ 3114.810898][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.810898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.810898][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.810898][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.810898][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.810898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.810898][ T72] [ 3114.813012][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3114.813012][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.813012][ T72] ipv6_find_idev+0x102/0x170 [ 3114.813012][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.813012][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.813012][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.813012][ T72] netlink_unicast+0x449/0x710 [ 3114.813012][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.813012][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.813012][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.813012][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.813012][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.813012][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.813012][ T72] [ 3114.814705][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3114.814705][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.814705][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.814705][ T72] ipv6_find_idev+0x102/0x170 [ 3114.814705][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.814705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.814705][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.814705][ T72] netlink_unicast+0x449/0x710 [ 3114.814705][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.814705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.814705][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.814705][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.814705][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.814705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.814705][ T72] [ 3114.816647][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3114.816959][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3114.816959][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.816959][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.816959][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.816959][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.816959][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.816959][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.816959][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.816959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.816959][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.816959][ T72] netlink_unicast+0x449/0x710 [ 3114.816959][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.816959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.816959][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.816959][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.816959][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.816959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.816959][ T72] [ 3114.819108][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3114.819108][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.819108][ T72] ipv6_find_idev+0x102/0x170 [ 3114.819108][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.819108][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.819108][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.819108][ T72] netlink_unicast+0x449/0x710 [ 3114.819108][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.819108][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.819108][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.819108][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.819108][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.819108][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.819108][ T72] [ 3114.820798][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3114.820798][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.820798][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.820798][ T72] ipv6_find_idev+0x102/0x170 [ 3114.820798][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.820798][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.820798][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.820798][ T72] netlink_unicast+0x449/0x710 [ 3114.820798][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.820798][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.820798][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.820798][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.820798][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.820798][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.820798][ T72] [ 3114.822661][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3114.822986][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3114.822986][ T72] netdev_get_by_index+0x5e/0x80 [ 3114.822986][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3114.822986][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3114.822986][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3114.822986][ T72] ipv6_add_addr+0x411/0x2000 [ 3114.822986][ T72] inet6_addr_add+0x30e/0xa40 [ 3114.822986][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3114.822986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.822986][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.822986][ T72] netlink_unicast+0x449/0x710 [ 3114.822986][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.822986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.822986][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.822986][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.822986][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.822986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.822986][ T72] [ 3114.825127][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3114.825127][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3114.825127][ T72] ipv6_find_idev+0x102/0x170 [ 3114.825127][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.825127][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.825127][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.825127][ T72] netlink_unicast+0x449/0x710 [ 3114.825127][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.825127][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.825127][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.825127][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.825127][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.825127][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.825127][ T72] [ 3114.826886][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3114.826886][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3114.826886][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3114.826886][ T72] ipv6_find_idev+0x102/0x170 [ 3114.826886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3114.826886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3114.826886][ T72] netlink_rcv_skb+0x130/0x360 [ 3114.826886][ T72] netlink_unicast+0x449/0x710 [ 3114.826886][ T72] netlink_sendmsg+0x723/0xbe0 [ 3114.826886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3114.826886][ T72] ___sys_sendmsg+0xee/0x170 [ 3114.826886][ T72] __sys_sendmsg+0xcd/0x170 [ 3114.826886][ T72] do_syscall_64+0xc6/0x1e0 [ 3114.826886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3114.826886][ T72] [ 3125.070889][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3125.071430][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3125.071430][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.071430][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.071430][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.071430][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.071430][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.071430][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.071430][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.071430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.071430][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.071430][ T72] netlink_unicast+0x449/0x710 [ 3125.071430][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.071430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.071430][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.071430][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.071430][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.071430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.071430][ T72] [ 3125.073432][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3125.073432][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.073432][ T72] ipv6_find_idev+0x102/0x170 [ 3125.073432][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.073432][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.073432][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.073432][ T72] netlink_unicast+0x449/0x710 [ 3125.073432][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.073432][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.073432][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.073432][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.073432][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.073432][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.073432][ T72] [ 3125.074980][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3125.074980][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.074980][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.074980][ T72] ipv6_find_idev+0x102/0x170 [ 3125.074980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.074980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.074980][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.074980][ T72] netlink_unicast+0x449/0x710 [ 3125.074980][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.074980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.074980][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.074980][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.074980][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.074980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.074980][ T72] [ 3125.076687][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3125.076978][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3125.076978][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.076978][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.076978][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.076978][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.076978][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.076978][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.076978][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.076978][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.076978][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.076978][ T72] netlink_unicast+0x449/0x710 [ 3125.076978][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.076978][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.076978][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.076978][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.076978][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.076978][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.076978][ T72] [ 3125.078964][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3125.078964][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.078964][ T72] ipv6_find_idev+0x102/0x170 [ 3125.078964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.078964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.078964][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.078964][ T72] netlink_unicast+0x449/0x710 [ 3125.078964][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.078964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.078964][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.078964][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.078964][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.078964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.078964][ T72] [ 3125.080500][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3125.080500][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.080500][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.080500][ T72] ipv6_find_idev+0x102/0x170 [ 3125.080500][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.080500][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.080500][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.080500][ T72] netlink_unicast+0x449/0x710 [ 3125.080500][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.080500][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.080500][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.080500][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.080500][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.080500][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.080500][ T72] [ 3125.082222][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3125.082491][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3125.082491][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.082491][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.082491][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.082491][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.082491][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.082491][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.082491][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.082491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.082491][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.082491][ T72] netlink_unicast+0x449/0x710 [ 3125.082491][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.082491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.082491][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.082491][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.082491][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.082491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.082491][ T72] [ 3125.084467][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3125.084467][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.084467][ T72] ipv6_find_idev+0x102/0x170 [ 3125.084467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.084467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.084467][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.084467][ T72] netlink_unicast+0x449/0x710 [ 3125.084467][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.084467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.084467][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.084467][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.084467][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.084467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.084467][ T72] [ 3125.086002][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3125.086002][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.086002][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.086002][ T72] ipv6_find_idev+0x102/0x170 [ 3125.086002][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.086002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.086002][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.086002][ T72] netlink_unicast+0x449/0x710 [ 3125.086002][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.086002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.086002][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.086002][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.086002][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.086002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.086002][ T72] [ 3125.087700][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3125.088399][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3125.088399][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.088399][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.088399][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.088399][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.088399][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.088399][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.088399][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.088399][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.088399][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.088399][ T72] netlink_unicast+0x449/0x710 [ 3125.088399][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.088399][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.088399][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.088399][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.088399][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.088399][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.088399][ T72] [ 3125.090430][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3125.090430][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.090430][ T72] ipv6_find_idev+0x102/0x170 [ 3125.090430][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.090430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.090430][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.090430][ T72] netlink_unicast+0x449/0x710 [ 3125.090430][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.090430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.090430][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.090430][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.090430][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.090430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.090430][ T72] [ 3125.091965][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3125.091965][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.091965][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.091965][ T72] ipv6_find_idev+0x102/0x170 [ 3125.091965][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.091965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.091965][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.091965][ T72] netlink_unicast+0x449/0x710 [ 3125.091965][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.091965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.091965][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.091965][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.091965][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.091965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.091965][ T72] [ 3125.093691][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3125.094011][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3125.094011][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.094011][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.094011][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.094011][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.094011][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.094011][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.094011][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.094011][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.094011][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.094011][ T72] netlink_unicast+0x449/0x710 [ 3125.094011][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.094011][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.094011][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.094011][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.094011][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.094011][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.094011][ T72] [ 3125.096002][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3125.096002][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.096002][ T72] ipv6_find_idev+0x102/0x170 [ 3125.096002][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.096002][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.096002][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.096002][ T72] netlink_unicast+0x449/0x710 [ 3125.096002][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.096002][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.096002][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.096002][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.096002][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.096002][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.096002][ T72] [ 3125.097533][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3125.097533][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.097533][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.097533][ T72] ipv6_find_idev+0x102/0x170 [ 3125.097533][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.097533][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.097533][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.097533][ T72] netlink_unicast+0x449/0x710 [ 3125.097533][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.097533][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.097533][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.097533][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.097533][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.097533][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.097533][ T72] [ 3125.099254][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3125.099562][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3125.099562][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.099562][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.099562][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.099562][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.099562][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.099562][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.099562][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.099562][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.099562][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.099562][ T72] netlink_unicast+0x449/0x710 [ 3125.099562][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.099562][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.099562][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.099562][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.099562][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.099562][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.099562][ T72] [ 3125.101607][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3125.101607][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.101607][ T72] ipv6_find_idev+0x102/0x170 [ 3125.101607][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.101607][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.101607][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.101607][ T72] netlink_unicast+0x449/0x710 [ 3125.101607][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.101607][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.101607][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.101607][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.101607][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.101607][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.101607][ T72] [ 3125.103323][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3125.103323][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.103323][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.103323][ T72] ipv6_find_idev+0x102/0x170 [ 3125.103323][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.103323][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.103323][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.103323][ T72] netlink_unicast+0x449/0x710 [ 3125.103323][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.103323][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.103323][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.103323][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.103323][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.103323][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.103323][ T72] [ 3125.105222][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3125.105528][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3125.105528][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.105528][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.105528][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.105528][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.105528][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.105528][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.105528][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.105528][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.105528][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.105528][ T72] netlink_unicast+0x449/0x710 [ 3125.105528][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.105528][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.105528][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.105528][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.105528][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.105528][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.105528][ T72] [ 3125.107766][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3125.107766][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.107766][ T72] ipv6_find_idev+0x102/0x170 [ 3125.107766][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.107766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.107766][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.107766][ T72] netlink_unicast+0x449/0x710 [ 3125.107766][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.107766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.107766][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.107766][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.107766][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.107766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.107766][ T72] [ 3125.109481][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3125.109481][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.109481][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.109481][ T72] ipv6_find_idev+0x102/0x170 [ 3125.109481][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.109481][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.109481][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.109481][ T72] netlink_unicast+0x449/0x710 [ 3125.109481][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.109481][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.109481][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.109481][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.109481][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.109481][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.109481][ T72] [ 3125.111382][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3125.111691][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3125.111691][ T72] netdev_get_by_index+0x5e/0x80 [ 3125.111691][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3125.111691][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3125.111691][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3125.111691][ T72] ipv6_add_addr+0x411/0x2000 [ 3125.111691][ T72] inet6_addr_add+0x30e/0xa40 [ 3125.111691][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3125.111691][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.111691][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.111691][ T72] netlink_unicast+0x449/0x710 [ 3125.111691][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.111691][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.111691][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.111691][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.111691][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.111691][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.111691][ T72] [ 3125.113889][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3125.113889][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3125.113889][ T72] ipv6_find_idev+0x102/0x170 [ 3125.113889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.113889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.113889][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.113889][ T72] netlink_unicast+0x449/0x710 [ 3125.113889][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.113889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.113889][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.113889][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.113889][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.113889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.113889][ T72] [ 3125.115595][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3125.115595][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3125.115595][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3125.115595][ T72] ipv6_find_idev+0x102/0x170 [ 3125.115595][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3125.115595][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3125.115595][ T72] netlink_rcv_skb+0x130/0x360 [ 3125.115595][ T72] netlink_unicast+0x449/0x710 [ 3125.115595][ T72] netlink_sendmsg+0x723/0xbe0 [ 3125.115595][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3125.115595][ T72] ___sys_sendmsg+0xee/0x170 [ 3125.115595][ T72] __sys_sendmsg+0xcd/0x170 [ 3125.115595][ T72] do_syscall_64+0xc6/0x1e0 [ 3125.115595][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3125.115595][ T72] [ 3135.358871][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3135.359304][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3135.359304][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.359304][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.359304][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.359304][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.359304][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.359304][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.359304][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.359304][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.359304][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.359304][ T72] netlink_unicast+0x449/0x710 [ 3135.359304][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.359304][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.359304][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.359304][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.359304][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.359304][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.359304][ T72] [ 3135.361369][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3135.361369][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.361369][ T72] ipv6_find_idev+0x102/0x170 [ 3135.361369][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.361369][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.361369][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.361369][ T72] netlink_unicast+0x449/0x710 [ 3135.361369][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.361369][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.361369][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.361369][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.361369][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.361369][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.361369][ T72] [ 3135.362905][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3135.362905][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.362905][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.362905][ T72] ipv6_find_idev+0x102/0x170 [ 3135.362905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.362905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.362905][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.362905][ T72] netlink_unicast+0x449/0x710 [ 3135.362905][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.362905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.362905][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.362905][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.362905][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.362905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.362905][ T72] [ 3135.364614][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3135.364913][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3135.364913][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.364913][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.364913][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.364913][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.364913][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.364913][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.364913][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.364913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.364913][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.364913][ T72] netlink_unicast+0x449/0x710 [ 3135.364913][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.364913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.364913][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.364913][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.364913][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.364913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.364913][ T72] [ 3135.366923][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3135.366923][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.366923][ T72] ipv6_find_idev+0x102/0x170 [ 3135.366923][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.366923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.366923][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.366923][ T72] netlink_unicast+0x449/0x710 [ 3135.366923][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.366923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.366923][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.366923][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.366923][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.366923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.366923][ T72] [ 3135.368455][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3135.368455][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.368455][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.368455][ T72] ipv6_find_idev+0x102/0x170 [ 3135.368455][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.368455][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.368455][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.368455][ T72] netlink_unicast+0x449/0x710 [ 3135.368455][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.368455][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.368455][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.368455][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.368455][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.368455][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.368455][ T72] [ 3135.370140][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3135.370410][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3135.370410][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.370410][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.370410][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.370410][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.370410][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.370410][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.370410][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.370410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.370410][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.370410][ T72] netlink_unicast+0x449/0x710 [ 3135.370410][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.370410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.370410][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.370410][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.370410][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.370410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.370410][ T72] [ 3135.372391][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3135.372391][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.372391][ T72] ipv6_find_idev+0x102/0x170 [ 3135.372391][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.372391][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.372391][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.372391][ T72] netlink_unicast+0x449/0x710 [ 3135.372391][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.372391][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.372391][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.372391][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.372391][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.372391][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.372391][ T72] [ 3135.373924][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3135.373924][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.373924][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.373924][ T72] ipv6_find_idev+0x102/0x170 [ 3135.373924][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.373924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.373924][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.373924][ T72] netlink_unicast+0x449/0x710 [ 3135.373924][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.373924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.373924][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.373924][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.373924][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.373924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.373924][ T72] [ 3135.375597][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3135.376296][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3135.376296][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.376296][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.376296][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.376296][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.376296][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.376296][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.376296][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.376296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.376296][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.376296][ T72] netlink_unicast+0x449/0x710 [ 3135.376296][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.376296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.376296][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.376296][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.376296][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.376296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.376296][ T72] [ 3135.378322][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3135.378322][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.378322][ T72] ipv6_find_idev+0x102/0x170 [ 3135.378322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.378322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.378322][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.378322][ T72] netlink_unicast+0x449/0x710 [ 3135.378322][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.378322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.378322][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.378322][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.378322][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.378322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.378322][ T72] [ 3135.379900][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3135.379900][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.379900][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.379900][ T72] ipv6_find_idev+0x102/0x170 [ 3135.379900][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.379900][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.379900][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.379900][ T72] netlink_unicast+0x449/0x710 [ 3135.379900][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.379900][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.379900][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.379900][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.379900][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.379900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.379900][ T72] [ 3135.381633][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3135.381956][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3135.381956][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.381956][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.381956][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.381956][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.381956][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.381956][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.381956][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.381956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.381956][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.381956][ T72] netlink_unicast+0x449/0x710 [ 3135.381956][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.381956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.381956][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.381956][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.381956][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.381956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.381956][ T72] [ 3135.383942][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3135.383942][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.383942][ T72] ipv6_find_idev+0x102/0x170 [ 3135.383942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.383942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.383942][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.383942][ T72] netlink_unicast+0x449/0x710 [ 3135.383942][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.383942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.383942][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.383942][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.383942][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.383942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.383942][ T72] [ 3135.385470][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3135.385470][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.385470][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.385470][ T72] ipv6_find_idev+0x102/0x170 [ 3135.385470][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.385470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.385470][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.385470][ T72] netlink_unicast+0x449/0x710 [ 3135.385470][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.385470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.385470][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.385470][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.385470][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.385470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.385470][ T72] [ 3135.387193][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3135.387499][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3135.387499][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.387499][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.387499][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.387499][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.387499][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.387499][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.387499][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.387499][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.387499][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.387499][ T72] netlink_unicast+0x449/0x710 [ 3135.387499][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.387499][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.387499][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.387499][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.387499][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.387499][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.387499][ T72] [ 3135.389557][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3135.389557][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.389557][ T72] ipv6_find_idev+0x102/0x170 [ 3135.389557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.389557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.389557][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.389557][ T72] netlink_unicast+0x449/0x710 [ 3135.389557][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.389557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.389557][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.389557][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.389557][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.389557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.389557][ T72] [ 3135.391329][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3135.391329][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.391329][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.391329][ T72] ipv6_find_idev+0x102/0x170 [ 3135.391329][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.391329][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.391329][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.391329][ T72] netlink_unicast+0x449/0x710 [ 3135.391329][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.391329][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.391329][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.391329][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.391329][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.391329][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.391329][ T72] [ 3135.393220][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3135.393526][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3135.393526][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.393526][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.393526][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.393526][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.393526][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.393526][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.393526][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.393526][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.393526][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.393526][ T72] netlink_unicast+0x449/0x710 [ 3135.393526][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.393526][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.393526][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.393526][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.393526][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.393526][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.393526][ T72] [ 3135.395693][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3135.395693][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.395693][ T72] ipv6_find_idev+0x102/0x170 [ 3135.395693][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.395693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.395693][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.395693][ T72] netlink_unicast+0x449/0x710 [ 3135.395693][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.395693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.395693][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.395693][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.395693][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.395693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.395693][ T72] [ 3135.397774][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3135.397774][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.397774][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.397774][ T72] ipv6_find_idev+0x102/0x170 [ 3135.397774][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.397774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.397774][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.397774][ T72] netlink_unicast+0x449/0x710 [ 3135.397774][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.397774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.397774][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.397774][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.397774][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.397774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.397774][ T72] [ 3135.399677][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3135.399999][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3135.399999][ T72] netdev_get_by_index+0x5e/0x80 [ 3135.399999][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3135.399999][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3135.399999][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3135.399999][ T72] ipv6_add_addr+0x411/0x2000 [ 3135.399999][ T72] inet6_addr_add+0x30e/0xa40 [ 3135.399999][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3135.399999][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.399999][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.399999][ T72] netlink_unicast+0x449/0x710 [ 3135.399999][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.399999][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.399999][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.399999][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.399999][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.399999][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.399999][ T72] [ 3135.402169][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3135.402169][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3135.402169][ T72] ipv6_find_idev+0x102/0x170 [ 3135.402169][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.402169][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.402169][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.402169][ T72] netlink_unicast+0x449/0x710 [ 3135.402169][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.402169][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.402169][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.402169][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.402169][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.402169][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.402169][ T72] [ 3135.404460][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3135.404460][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3135.404460][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3135.404460][ T72] ipv6_find_idev+0x102/0x170 [ 3135.404460][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3135.404460][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3135.404460][ T72] netlink_rcv_skb+0x130/0x360 [ 3135.404460][ T72] netlink_unicast+0x449/0x710 [ 3135.404460][ T72] netlink_sendmsg+0x723/0xbe0 [ 3135.404460][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3135.404460][ T72] ___sys_sendmsg+0xee/0x170 [ 3135.404460][ T72] __sys_sendmsg+0xcd/0x170 [ 3135.404460][ T72] do_syscall_64+0xc6/0x1e0 [ 3135.404460][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3135.404460][ T72] [ 3145.646839][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3145.647699][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3145.647699][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.647699][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.647699][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.647699][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.647699][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.647699][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.647699][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.647699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.647699][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.647699][ T72] netlink_unicast+0x449/0x710 [ 3145.647699][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.647699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.647699][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.647699][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.647699][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.647699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.647699][ T72] [ 3145.649803][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3145.649803][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.649803][ T72] ipv6_find_idev+0x102/0x170 [ 3145.649803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.649803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.649803][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.649803][ T72] netlink_unicast+0x449/0x710 [ 3145.649803][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.649803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.649803][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.649803][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.649803][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.649803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.649803][ T72] [ 3145.651348][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3145.651348][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.651348][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.651348][ T72] ipv6_find_idev+0x102/0x170 [ 3145.651348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.651348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.651348][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.651348][ T72] netlink_unicast+0x449/0x710 [ 3145.651348][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.651348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.651348][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.651348][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.651348][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.651348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.651348][ T72] [ 3145.653410][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3145.653683][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3145.653683][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.653683][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.653683][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.653683][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.653683][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.653683][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.653683][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.653683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.653683][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.653683][ T72] netlink_unicast+0x449/0x710 [ 3145.653683][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.653683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.653683][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.653683][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.653683][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.653683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.653683][ T72] [ 3145.655676][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3145.655676][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.655676][ T72] ipv6_find_idev+0x102/0x170 [ 3145.655676][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.655676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.655676][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.655676][ T72] netlink_unicast+0x449/0x710 [ 3145.655676][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.655676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.655676][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.655676][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.655676][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.655676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.655676][ T72] [ 3145.657228][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3145.657228][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.657228][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.657228][ T72] ipv6_find_idev+0x102/0x170 [ 3145.657228][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.657228][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.657228][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.657228][ T72] netlink_unicast+0x449/0x710 [ 3145.657228][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.657228][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.657228][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.657228][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.657228][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.657228][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.657228][ T72] [ 3145.658913][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3145.659181][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3145.659181][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.659181][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.659181][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.659181][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.659181][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.659181][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.659181][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.659181][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.659181][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.659181][ T72] netlink_unicast+0x449/0x710 [ 3145.659181][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.659181][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.659181][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.659181][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.659181][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.659181][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.659181][ T72] [ 3145.661169][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3145.661169][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.661169][ T72] ipv6_find_idev+0x102/0x170 [ 3145.661169][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.661169][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.661169][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.661169][ T72] netlink_unicast+0x449/0x710 [ 3145.661169][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.661169][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.661169][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.661169][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.661169][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.661169][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.661169][ T72] [ 3145.662699][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3145.662699][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.662699][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.662699][ T72] ipv6_find_idev+0x102/0x170 [ 3145.662699][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.662699][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.662699][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.662699][ T72] netlink_unicast+0x449/0x710 [ 3145.662699][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.662699][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.662699][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.662699][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.662699][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.662699][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.662699][ T72] [ 3145.664378][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3145.664649][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3145.664649][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.664649][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.664649][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.664649][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.664649][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.664649][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.664649][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.664649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.664649][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.664649][ T72] netlink_unicast+0x449/0x710 [ 3145.664649][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.664649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.664649][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.664649][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.664649][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.664649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.664649][ T72] [ 3145.666659][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3145.666659][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.666659][ T72] ipv6_find_idev+0x102/0x170 [ 3145.666659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.666659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.666659][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.666659][ T72] netlink_unicast+0x449/0x710 [ 3145.666659][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.666659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.666659][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.666659][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.666659][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.666659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.666659][ T72] [ 3145.668231][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3145.668231][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.668231][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.668231][ T72] ipv6_find_idev+0x102/0x170 [ 3145.668231][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.668231][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.668231][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.668231][ T72] netlink_unicast+0x449/0x710 [ 3145.668231][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.668231][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.668231][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.668231][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.668231][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.668231][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.668231][ T72] [ 3145.670320][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3145.670924][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3145.670924][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.670924][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.670924][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.670924][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.670924][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.670924][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.670924][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.670924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.670924][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.670924][ T72] netlink_unicast+0x449/0x710 [ 3145.670924][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.670924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.670924][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.670924][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.670924][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.670924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.670924][ T72] [ 3145.672942][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3145.672942][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.672942][ T72] ipv6_find_idev+0x102/0x170 [ 3145.672942][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.672942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.672942][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.672942][ T72] netlink_unicast+0x449/0x710 [ 3145.672942][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.672942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.672942][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.672942][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.672942][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.672942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.672942][ T72] [ 3145.674476][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3145.674476][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.674476][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.674476][ T72] ipv6_find_idev+0x102/0x170 [ 3145.674476][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.674476][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.674476][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.674476][ T72] netlink_unicast+0x449/0x710 [ 3145.674476][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.674476][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.674476][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.674476][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.674476][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.674476][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.674476][ T72] [ 3145.676174][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3145.676461][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3145.676461][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.676461][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.676461][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.676461][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.676461][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.676461][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.676461][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.676461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.676461][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.676461][ T72] netlink_unicast+0x449/0x710 [ 3145.676461][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.676461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.676461][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.676461][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.676461][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.676461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.676461][ T72] [ 3145.678452][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3145.678452][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.678452][ T72] ipv6_find_idev+0x102/0x170 [ 3145.678452][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.678452][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.678452][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.678452][ T72] netlink_unicast+0x449/0x710 [ 3145.678452][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.678452][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.678452][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.678452][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.678452][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.678452][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.678452][ T72] [ 3145.680050][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3145.680050][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.680050][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.680050][ T72] ipv6_find_idev+0x102/0x170 [ 3145.680050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.680050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.680050][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.680050][ T72] netlink_unicast+0x449/0x710 [ 3145.680050][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.680050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.680050][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.680050][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.680050][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.680050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.680050][ T72] [ 3145.682075][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3145.682381][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3145.682381][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.682381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.682381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.682381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.682381][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.682381][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.682381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.682381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.682381][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.682381][ T72] netlink_unicast+0x449/0x710 [ 3145.682381][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.682381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.682381][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.682381][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.682381][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.682381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.682381][ T72] [ 3145.684556][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3145.684556][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.684556][ T72] ipv6_find_idev+0x102/0x170 [ 3145.684556][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.684556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.684556][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.684556][ T72] netlink_unicast+0x449/0x710 [ 3145.684556][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.684556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.684556][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.684556][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.684556][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.684556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.684556][ T72] [ 3145.686278][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3145.686278][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.686278][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.686278][ T72] ipv6_find_idev+0x102/0x170 [ 3145.686278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.686278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.686278][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.686278][ T72] netlink_unicast+0x449/0x710 [ 3145.686278][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.686278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.686278][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.686278][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.686278][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.686278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.686278][ T72] [ 3145.688199][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3145.688509][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3145.688509][ T72] netdev_get_by_index+0x5e/0x80 [ 3145.688509][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3145.688509][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3145.688509][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3145.688509][ T72] ipv6_add_addr+0x411/0x2000 [ 3145.688509][ T72] inet6_addr_add+0x30e/0xa40 [ 3145.688509][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3145.688509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.688509][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.688509][ T72] netlink_unicast+0x449/0x710 [ 3145.688509][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.688509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.688509][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.688509][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.688509][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.688509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.688509][ T72] [ 3145.690690][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3145.690690][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3145.690690][ T72] ipv6_find_idev+0x102/0x170 [ 3145.690690][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.690690][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.690690][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.690690][ T72] netlink_unicast+0x449/0x710 [ 3145.690690][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.690690][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.690690][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.690690][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.690690][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.690690][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.690690][ T72] [ 3145.692461][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3145.692461][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3145.692461][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3145.692461][ T72] ipv6_find_idev+0x102/0x170 [ 3145.692461][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3145.692461][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3145.692461][ T72] netlink_rcv_skb+0x130/0x360 [ 3145.692461][ T72] netlink_unicast+0x449/0x710 [ 3145.692461][ T72] netlink_sendmsg+0x723/0xbe0 [ 3145.692461][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3145.692461][ T72] ___sys_sendmsg+0xee/0x170 [ 3145.692461][ T72] __sys_sendmsg+0xcd/0x170 [ 3145.692461][ T72] do_syscall_64+0xc6/0x1e0 [ 3145.692461][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3145.692461][ T72] [ 3155.742880][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3155.743380][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3155.743380][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.743380][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.743380][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.743380][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.743380][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.743380][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.743380][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.743380][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.743380][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.743380][ T72] netlink_unicast+0x449/0x710 [ 3155.743380][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.743380][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.743380][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.743380][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.743380][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.743380][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.743380][ T72] [ 3155.745385][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3155.745385][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.745385][ T72] ipv6_find_idev+0x102/0x170 [ 3155.745385][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.745385][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.745385][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.745385][ T72] netlink_unicast+0x449/0x710 [ 3155.745385][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.745385][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.745385][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.745385][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.745385][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.745385][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.745385][ T72] [ 3155.746959][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3155.746959][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.746959][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.746959][ T72] ipv6_find_idev+0x102/0x170 [ 3155.746959][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.746959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.746959][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.746959][ T72] netlink_unicast+0x449/0x710 [ 3155.746959][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.746959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.746959][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.746959][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.746959][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.746959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.746959][ T72] [ 3155.748715][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3155.749383][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3155.749383][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.749383][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.749383][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.749383][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.749383][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.749383][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.749383][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.749383][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.749383][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.749383][ T72] netlink_unicast+0x449/0x710 [ 3155.749383][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.749383][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.749383][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.749383][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.749383][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.749383][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.749383][ T72] [ 3155.751372][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3155.751372][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.751372][ T72] ipv6_find_idev+0x102/0x170 [ 3155.751372][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.751372][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.751372][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.751372][ T72] netlink_unicast+0x449/0x710 [ 3155.751372][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.751372][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.751372][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.751372][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.751372][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.751372][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.751372][ T72] [ 3155.752904][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3155.752904][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.752904][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.752904][ T72] ipv6_find_idev+0x102/0x170 [ 3155.752904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.752904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.752904][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.752904][ T72] netlink_unicast+0x449/0x710 [ 3155.752904][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.752904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.752904][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.752904][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.752904][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.752904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.752904][ T72] [ 3155.754588][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3155.754863][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3155.754863][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.754863][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.754863][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.754863][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.754863][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.754863][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.754863][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.754863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.754863][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.754863][ T72] netlink_unicast+0x449/0x710 [ 3155.754863][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.754863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.754863][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.754863][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.754863][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.754863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.754863][ T72] [ 3155.756887][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3155.756887][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.756887][ T72] ipv6_find_idev+0x102/0x170 [ 3155.756887][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.756887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.756887][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.756887][ T72] netlink_unicast+0x449/0x710 [ 3155.756887][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.756887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.756887][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.756887][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.756887][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.756887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.756887][ T72] [ 3155.758426][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3155.758426][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.758426][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.758426][ T72] ipv6_find_idev+0x102/0x170 [ 3155.758426][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.758426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.758426][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.758426][ T72] netlink_unicast+0x449/0x710 [ 3155.758426][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.758426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.758426][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.758426][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.758426][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.758426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.758426][ T72] [ 3155.760111][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3155.760377][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3155.760377][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.760377][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.760377][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.760377][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.760377][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.760377][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.760377][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.760377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.760377][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.760377][ T72] netlink_unicast+0x449/0x710 [ 3155.760377][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.760377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.760377][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.760377][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.760377][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.760377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.760377][ T72] [ 3155.762359][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3155.762359][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.762359][ T72] ipv6_find_idev+0x102/0x170 [ 3155.762359][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.762359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.762359][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.762359][ T72] netlink_unicast+0x449/0x710 [ 3155.762359][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.762359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.762359][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.762359][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.762359][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.762359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.762359][ T72] [ 3155.763899][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3155.763899][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.763899][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.763899][ T72] ipv6_find_idev+0x102/0x170 [ 3155.763899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.763899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.763899][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.763899][ T72] netlink_unicast+0x449/0x710 [ 3155.763899][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.763899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.763899][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.763899][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.763899][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.763899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.763899][ T72] [ 3155.765993][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3155.766592][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3155.766592][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.766592][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.766592][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.766592][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.766592][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.766592][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.766592][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.766592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.766592][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.766592][ T72] netlink_unicast+0x449/0x710 [ 3155.766592][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.766592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.766592][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.766592][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.766592][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.766592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.766592][ T72] [ 3155.768594][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3155.768594][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.768594][ T72] ipv6_find_idev+0x102/0x170 [ 3155.768594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.768594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.768594][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.768594][ T72] netlink_unicast+0x449/0x710 [ 3155.768594][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.768594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.768594][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.768594][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.768594][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.768594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.768594][ T72] [ 3155.770130][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3155.770130][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.770130][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.770130][ T72] ipv6_find_idev+0x102/0x170 [ 3155.770130][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.770130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.770130][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.770130][ T72] netlink_unicast+0x449/0x710 [ 3155.770130][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.770130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.770130][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.770130][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.770130][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.770130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.770130][ T72] [ 3155.771816][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3155.772093][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3155.772093][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.772093][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.772093][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.772093][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.772093][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.772093][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.772093][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.772093][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.772093][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.772093][ T72] netlink_unicast+0x449/0x710 [ 3155.772093][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.772093][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.772093][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.772093][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.772093][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.772093][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.772093][ T72] [ 3155.774099][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3155.774099][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.774099][ T72] ipv6_find_idev+0x102/0x170 [ 3155.774099][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.774099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.774099][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.774099][ T72] netlink_unicast+0x449/0x710 [ 3155.774099][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.774099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.774099][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.774099][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.774099][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.774099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.774099][ T72] [ 3155.775709][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3155.775709][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.775709][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.775709][ T72] ipv6_find_idev+0x102/0x170 [ 3155.775709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.775709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.775709][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.775709][ T72] netlink_unicast+0x449/0x710 [ 3155.775709][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.775709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.775709][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.775709][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.775709][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.775709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.775709][ T72] [ 3155.777715][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3155.778037][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3155.778037][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.778037][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.778037][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.778037][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.778037][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.778037][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.778037][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.778037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.778037][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.778037][ T72] netlink_unicast+0x449/0x710 [ 3155.778037][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.778037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.778037][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.778037][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.778037][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.778037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.778037][ T72] [ 3155.780258][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3155.780258][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.780258][ T72] ipv6_find_idev+0x102/0x170 [ 3155.780258][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.780258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.780258][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.780258][ T72] netlink_unicast+0x449/0x710 [ 3155.780258][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.780258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.780258][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.780258][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.780258][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.780258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.780258][ T72] [ 3155.781970][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3155.781970][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.781970][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.781970][ T72] ipv6_find_idev+0x102/0x170 [ 3155.781970][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.781970][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.781970][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.781970][ T72] netlink_unicast+0x449/0x710 [ 3155.781970][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.781970][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.781970][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.781970][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.781970][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.781970][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.781970][ T72] [ 3155.783867][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3155.784173][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3155.784173][ T72] netdev_get_by_index+0x5e/0x80 [ 3155.784173][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3155.784173][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3155.784173][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3155.784173][ T72] ipv6_add_addr+0x411/0x2000 [ 3155.784173][ T72] inet6_addr_add+0x30e/0xa40 [ 3155.784173][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3155.784173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.784173][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.784173][ T72] netlink_unicast+0x449/0x710 [ 3155.784173][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.784173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.784173][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.784173][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.784173][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.784173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.784173][ T72] [ 3155.786340][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3155.786340][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3155.786340][ T72] ipv6_find_idev+0x102/0x170 [ 3155.786340][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.786340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.786340][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.786340][ T72] netlink_unicast+0x449/0x710 [ 3155.786340][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.786340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.786340][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.786340][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.786340][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.786340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.786340][ T72] [ 3155.788050][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3155.788050][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3155.788050][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3155.788050][ T72] ipv6_find_idev+0x102/0x170 [ 3155.788050][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3155.788050][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3155.788050][ T72] netlink_rcv_skb+0x130/0x360 [ 3155.788050][ T72] netlink_unicast+0x449/0x710 [ 3155.788050][ T72] netlink_sendmsg+0x723/0xbe0 [ 3155.788050][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3155.788050][ T72] ___sys_sendmsg+0xee/0x170 [ 3155.788050][ T72] __sys_sendmsg+0xcd/0x170 [ 3155.788050][ T72] do_syscall_64+0xc6/0x1e0 [ 3155.788050][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3155.788050][ T72] [ 3166.014975][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3166.015379][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3166.015379][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.015379][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.015379][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.015379][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.015379][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.015379][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.015379][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.015379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.015379][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.015379][ T72] netlink_unicast+0x449/0x710 [ 3166.015379][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.015379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.015379][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.015379][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.015379][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.015379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.015379][ T72] [ 3166.017384][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3166.017384][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.017384][ T72] ipv6_find_idev+0x102/0x170 [ 3166.017384][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.017384][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.017384][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.017384][ T72] netlink_unicast+0x449/0x710 [ 3166.017384][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.017384][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.017384][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.017384][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.017384][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.017384][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.017384][ T72] [ 3166.018899][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3166.018899][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.018899][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.018899][ T72] ipv6_find_idev+0x102/0x170 [ 3166.018899][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.018899][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.018899][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.018899][ T72] netlink_unicast+0x449/0x710 [ 3166.018899][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.018899][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.018899][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.018899][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.018899][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.018899][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.018899][ T72] [ 3166.020596][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3166.020893][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3166.020893][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.020893][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.020893][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.020893][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.020893][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.020893][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.020893][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.020893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.020893][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.020893][ T72] netlink_unicast+0x449/0x710 [ 3166.020893][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.020893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.020893][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.020893][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.020893][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.020893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.020893][ T72] [ 3166.022860][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3166.022860][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.022860][ T72] ipv6_find_idev+0x102/0x170 [ 3166.022860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.022860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.022860][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.022860][ T72] netlink_unicast+0x449/0x710 [ 3166.022860][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.022860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.022860][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.022860][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.022860][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.022860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.022860][ T72] [ 3166.024375][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3166.024375][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.024375][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.024375][ T72] ipv6_find_idev+0x102/0x170 [ 3166.024375][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.024375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.024375][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.024375][ T72] netlink_unicast+0x449/0x710 [ 3166.024375][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.024375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.024375][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.024375][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.024375][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.024375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.024375][ T72] [ 3166.026030][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3166.026309][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3166.026309][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.026309][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.026309][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.026309][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.026309][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.026309][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.026309][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.026309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.026309][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.026309][ T72] netlink_unicast+0x449/0x710 [ 3166.026309][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.026309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.026309][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.026309][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.026309][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.026309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.026309][ T72] [ 3166.028269][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3166.028269][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.028269][ T72] ipv6_find_idev+0x102/0x170 [ 3166.028269][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.028269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.028269][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.028269][ T72] netlink_unicast+0x449/0x710 [ 3166.028269][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.028269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.028269][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.028269][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.028269][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.028269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.028269][ T72] [ 3166.029787][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3166.029787][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.029787][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.029787][ T72] ipv6_find_idev+0x102/0x170 [ 3166.029787][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.029787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.029787][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.029787][ T72] netlink_unicast+0x449/0x710 [ 3166.029787][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.029787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.029787][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.029787][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.029787][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.029787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.029787][ T72] [ 3166.031442][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3166.031706][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3166.031706][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.031706][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.031706][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.031706][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.031706][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.031706][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.031706][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.031706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.031706][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.031706][ T72] netlink_unicast+0x449/0x710 [ 3166.031706][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.031706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.031706][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.031706][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.031706][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.031706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.031706][ T72] [ 3166.033706][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3166.033706][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.033706][ T72] ipv6_find_idev+0x102/0x170 [ 3166.033706][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.033706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.033706][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.033706][ T72] netlink_unicast+0x449/0x710 [ 3166.033706][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.033706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.033706][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.033706][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.033706][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.033706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.033706][ T72] [ 3166.035222][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3166.035222][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.035222][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.035222][ T72] ipv6_find_idev+0x102/0x170 [ 3166.035222][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.035222][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.035222][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.035222][ T72] netlink_unicast+0x449/0x710 [ 3166.035222][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.035222][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.035222][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.035222][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.035222][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.035222][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.035222][ T72] [ 3166.037295][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3166.037556][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3166.037556][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.037556][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.037556][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.037556][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.037556][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.037556][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.037556][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.037556][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.037556][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.037556][ T72] netlink_unicast+0x449/0x710 [ 3166.037556][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.037556][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.037556][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.037556][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.037556][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.037556][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.037556][ T72] [ 3166.039518][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3166.039518][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.039518][ T72] ipv6_find_idev+0x102/0x170 [ 3166.039518][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.039518][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.039518][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.039518][ T72] netlink_unicast+0x449/0x710 [ 3166.039518][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.039518][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.039518][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.039518][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.039518][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.039518][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.039518][ T72] [ 3166.041036][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3166.041036][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.041036][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.041036][ T72] ipv6_find_idev+0x102/0x170 [ 3166.041036][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.041036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.041036][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.041036][ T72] netlink_unicast+0x449/0x710 [ 3166.041036][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.041036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.041036][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.041036][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.041036][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.041036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.041036][ T72] [ 3166.042730][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3166.043047][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3166.043047][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.043047][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.043047][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.043047][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.043047][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.043047][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.043047][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.043047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.043047][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.043047][ T72] netlink_unicast+0x449/0x710 [ 3166.043047][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.043047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.043047][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.043047][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.043047][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.043047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.043047][ T72] [ 3166.045134][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3166.045134][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.045134][ T72] ipv6_find_idev+0x102/0x170 [ 3166.045134][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.045134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.045134][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.045134][ T72] netlink_unicast+0x449/0x710 [ 3166.045134][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.045134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.045134][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.045134][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.045134][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.045134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.045134][ T72] [ 3166.046889][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3166.046889][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.046889][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.046889][ T72] ipv6_find_idev+0x102/0x170 [ 3166.046889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.046889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.046889][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.046889][ T72] netlink_unicast+0x449/0x710 [ 3166.046889][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.046889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.046889][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.046889][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.046889][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.046889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.046889][ T72] [ 3166.048770][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3166.049565][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3166.049565][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.049565][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.049565][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.049565][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.049565][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.049565][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.049565][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.049565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.049565][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.049565][ T72] netlink_unicast+0x449/0x710 [ 3166.049565][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.049565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.049565][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.049565][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.049565][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.049565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.049565][ T72] [ 3166.051765][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3166.051765][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.051765][ T72] ipv6_find_idev+0x102/0x170 [ 3166.051765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.051765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.051765][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.051765][ T72] netlink_unicast+0x449/0x710 [ 3166.051765][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.051765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.051765][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.051765][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.051765][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.051765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.051765][ T72] [ 3166.053398][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3166.053398][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.053398][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.053398][ T72] ipv6_find_idev+0x102/0x170 [ 3166.053398][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.053398][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.053398][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.053398][ T72] netlink_unicast+0x449/0x710 [ 3166.053398][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.053398][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.053398][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.053398][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.053398][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.053398][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.053398][ T72] [ 3166.055327][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3166.055591][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3166.055591][ T72] netdev_get_by_index+0x5e/0x80 [ 3166.055591][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3166.055591][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3166.055591][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3166.055591][ T72] ipv6_add_addr+0x411/0x2000 [ 3166.055591][ T72] inet6_addr_add+0x30e/0xa40 [ 3166.055591][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3166.055591][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.055591][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.055591][ T72] netlink_unicast+0x449/0x710 [ 3166.055591][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.055591][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.055591][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.055591][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.055591][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.055591][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.055591][ T72] [ 3166.057793][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3166.057793][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3166.057793][ T72] ipv6_find_idev+0x102/0x170 [ 3166.057793][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.057793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.057793][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.057793][ T72] netlink_unicast+0x449/0x710 [ 3166.057793][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.057793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.057793][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.057793][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.057793][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.057793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.057793][ T72] [ 3166.059487][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3166.059487][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3166.059487][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3166.059487][ T72] ipv6_find_idev+0x102/0x170 [ 3166.059487][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3166.059487][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3166.059487][ T72] netlink_rcv_skb+0x130/0x360 [ 3166.059487][ T72] netlink_unicast+0x449/0x710 [ 3166.059487][ T72] netlink_sendmsg+0x723/0xbe0 [ 3166.059487][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3166.059487][ T72] ___sys_sendmsg+0xee/0x170 [ 3166.059487][ T72] __sys_sendmsg+0xcd/0x170 [ 3166.059487][ T72] do_syscall_64+0xc6/0x1e0 [ 3166.059487][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3166.059487][ T72] [ 3176.302921][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3176.303336][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3176.303336][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.303336][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.303336][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.303336][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.303336][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.303336][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.303336][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.303336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.303336][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.303336][ T72] netlink_unicast+0x449/0x710 [ 3176.303336][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.303336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.303336][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.303336][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.303336][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.303336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.303336][ T72] [ 3176.305417][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3176.305417][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.305417][ T72] ipv6_find_idev+0x102/0x170 [ 3176.305417][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.305417][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.305417][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.305417][ T72] netlink_unicast+0x449/0x710 [ 3176.305417][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.305417][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.305417][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.305417][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.305417][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.305417][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.305417][ T72] [ 3176.306949][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3176.306949][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.306949][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.306949][ T72] ipv6_find_idev+0x102/0x170 [ 3176.306949][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.306949][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.306949][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.306949][ T72] netlink_unicast+0x449/0x710 [ 3176.306949][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.306949][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.306949][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.306949][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.306949][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.306949][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.306949][ T72] [ 3176.308655][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3176.308954][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3176.308954][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.308954][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.308954][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.308954][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.308954][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.308954][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.308954][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.308954][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.308954][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.308954][ T72] netlink_unicast+0x449/0x710 [ 3176.308954][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.308954][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.308954][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.308954][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.308954][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.308954][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.308954][ T72] [ 3176.310915][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3176.310915][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.310915][ T72] ipv6_find_idev+0x102/0x170 [ 3176.310915][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.310915][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.310915][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.310915][ T72] netlink_unicast+0x449/0x710 [ 3176.310915][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.310915][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.310915][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.310915][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.310915][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.310915][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.310915][ T72] [ 3176.312427][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3176.312427][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.312427][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.312427][ T72] ipv6_find_idev+0x102/0x170 [ 3176.312427][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.312427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.312427][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.312427][ T72] netlink_unicast+0x449/0x710 [ 3176.312427][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.312427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.312427][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.312427][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.312427][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.312427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.312427][ T72] [ 3176.314087][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3176.314355][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3176.314355][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.314355][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.314355][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.314355][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.314355][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.314355][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.314355][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.314355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.314355][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.314355][ T72] netlink_unicast+0x449/0x710 [ 3176.314355][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.314355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.314355][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.314355][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.314355][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.314355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.314355][ T72] [ 3176.316350][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3176.316350][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.316350][ T72] ipv6_find_idev+0x102/0x170 [ 3176.316350][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.316350][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.316350][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.316350][ T72] netlink_unicast+0x449/0x710 [ 3176.316350][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.316350][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.316350][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.316350][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.316350][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.316350][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.316350][ T72] [ 3176.317861][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3176.317861][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.317861][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.317861][ T72] ipv6_find_idev+0x102/0x170 [ 3176.317861][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.317861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.317861][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.317861][ T72] netlink_unicast+0x449/0x710 [ 3176.317861][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.317861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.317861][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.317861][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.317861][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.317861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.317861][ T72] [ 3176.319517][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3176.319781][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3176.319781][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.319781][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.319781][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.319781][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.319781][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.319781][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.319781][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.319781][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.319781][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.319781][ T72] netlink_unicast+0x449/0x710 [ 3176.319781][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.319781][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.319781][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.319781][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.319781][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.319781][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.319781][ T72] [ 3176.321738][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3176.321738][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.321738][ T72] ipv6_find_idev+0x102/0x170 [ 3176.321738][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.321738][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.321738][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.321738][ T72] netlink_unicast+0x449/0x710 [ 3176.321738][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.321738][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.321738][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.321738][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.321738][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.321738][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.321738][ T72] [ 3176.323254][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3176.323254][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.323254][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.323254][ T72] ipv6_find_idev+0x102/0x170 [ 3176.323254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.323254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.323254][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.323254][ T72] netlink_unicast+0x449/0x710 [ 3176.323254][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.323254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.323254][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.323254][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.323254][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.323254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.323254][ T72] [ 3176.325309][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3176.325566][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3176.325566][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.325566][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.325566][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.325566][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.325566][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.325566][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.325566][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.325566][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.325566][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.325566][ T72] netlink_unicast+0x449/0x710 [ 3176.325566][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.325566][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.325566][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.325566][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.325566][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.325566][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.325566][ T72] [ 3176.327541][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3176.327541][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.327541][ T72] ipv6_find_idev+0x102/0x170 [ 3176.327541][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.327541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.327541][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.327541][ T72] netlink_unicast+0x449/0x710 [ 3176.327541][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.327541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.327541][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.327541][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.327541][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.327541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.327541][ T72] [ 3176.329049][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3176.329049][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.329049][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.329049][ T72] ipv6_find_idev+0x102/0x170 [ 3176.329049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.329049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.329049][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.329049][ T72] netlink_unicast+0x449/0x710 [ 3176.329049][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.329049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.329049][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.329049][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.329049][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.329049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.329049][ T72] [ 3176.330754][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3176.331012][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3176.331012][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.331012][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.331012][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.331012][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.331012][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.331012][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.331012][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.331012][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.331012][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.331012][ T72] netlink_unicast+0x449/0x710 [ 3176.331012][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.331012][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.331012][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.331012][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.331012][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.331012][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.331012][ T72] [ 3176.333111][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3176.333111][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.333111][ T72] ipv6_find_idev+0x102/0x170 [ 3176.333111][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.333111][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.333111][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.333111][ T72] netlink_unicast+0x449/0x710 [ 3176.333111][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.333111][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.333111][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.333111][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.333111][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.333111][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.333111][ T72] [ 3176.334860][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3176.334860][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.334860][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.334860][ T72] ipv6_find_idev+0x102/0x170 [ 3176.334860][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.334860][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.334860][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.334860][ T72] netlink_unicast+0x449/0x710 [ 3176.334860][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.334860][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.334860][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.334860][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.334860][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.334860][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.334860][ T72] [ 3176.336790][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3176.337048][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3176.337048][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.337048][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.337048][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.337048][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.337048][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.337048][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.337048][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.337048][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.337048][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.337048][ T72] netlink_unicast+0x449/0x710 [ 3176.337048][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.337048][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.337048][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.337048][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.337048][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.337048][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.337048][ T72] [ 3176.339192][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3176.339192][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.339192][ T72] ipv6_find_idev+0x102/0x170 [ 3176.339192][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.339192][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.339192][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.339192][ T72] netlink_unicast+0x449/0x710 [ 3176.339192][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.339192][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.339192][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.339192][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.339192][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.339192][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.339192][ T72] [ 3176.340885][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3176.340885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.340885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.340885][ T72] ipv6_find_idev+0x102/0x170 [ 3176.340885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.340885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.340885][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.340885][ T72] netlink_unicast+0x449/0x710 [ 3176.340885][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.340885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.340885][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.340885][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.340885][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.340885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.340885][ T72] [ 3176.342770][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3176.343035][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3176.343035][ T72] netdev_get_by_index+0x5e/0x80 [ 3176.343035][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3176.343035][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3176.343035][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3176.343035][ T72] ipv6_add_addr+0x411/0x2000 [ 3176.343035][ T72] inet6_addr_add+0x30e/0xa40 [ 3176.343035][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3176.343035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.343035][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.343035][ T72] netlink_unicast+0x449/0x710 [ 3176.343035][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.343035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.343035][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.343035][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.343035][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.343035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.343035][ T72] [ 3176.345302][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3176.345302][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3176.345302][ T72] ipv6_find_idev+0x102/0x170 [ 3176.345302][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.345302][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.345302][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.345302][ T72] netlink_unicast+0x449/0x710 [ 3176.345302][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.345302][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.345302][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.345302][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.345302][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.345302][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.345302][ T72] [ 3176.347010][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3176.347010][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3176.347010][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3176.347010][ T72] ipv6_find_idev+0x102/0x170 [ 3176.347010][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3176.347010][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3176.347010][ T72] netlink_rcv_skb+0x130/0x360 [ 3176.347010][ T72] netlink_unicast+0x449/0x710 [ 3176.347010][ T72] netlink_sendmsg+0x723/0xbe0 [ 3176.347010][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3176.347010][ T72] ___sys_sendmsg+0xee/0x170 [ 3176.347010][ T72] __sys_sendmsg+0xcd/0x170 [ 3176.347010][ T72] do_syscall_64+0xc6/0x1e0 [ 3176.347010][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3176.347010][ T72] [ 3186.358891][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3186.359357][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3186.359357][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.359357][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.359357][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.359357][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.359357][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.359357][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.359357][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.359357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.359357][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.359357][ T72] netlink_unicast+0x449/0x710 [ 3186.359357][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.359357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.359357][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.359357][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.359357][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.359357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.359357][ T72] [ 3186.361345][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3186.361345][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.361345][ T72] ipv6_find_idev+0x102/0x170 [ 3186.361345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.361345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.361345][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.361345][ T72] netlink_unicast+0x449/0x710 [ 3186.361345][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.361345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.361345][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.361345][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.361345][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.361345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.361345][ T72] [ 3186.362869][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3186.362869][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.362869][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.362869][ T72] ipv6_find_idev+0x102/0x170 [ 3186.362869][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.362869][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.362869][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.362869][ T72] netlink_unicast+0x449/0x710 [ 3186.362869][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.362869][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.362869][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.362869][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.362869][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.362869][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.362869][ T72] [ 3186.364534][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3186.364821][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3186.364821][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.364821][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.364821][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.364821][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.364821][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.364821][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.364821][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.364821][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.364821][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.364821][ T72] netlink_unicast+0x449/0x710 [ 3186.364821][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.364821][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.364821][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.364821][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.364821][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.364821][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.364821][ T72] [ 3186.366789][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3186.366789][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.366789][ T72] ipv6_find_idev+0x102/0x170 [ 3186.366789][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.366789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.366789][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.366789][ T72] netlink_unicast+0x449/0x710 [ 3186.366789][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.366789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.366789][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.366789][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.366789][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.366789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.366789][ T72] [ 3186.368296][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3186.368296][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.368296][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.368296][ T72] ipv6_find_idev+0x102/0x170 [ 3186.368296][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.368296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.368296][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.368296][ T72] netlink_unicast+0x449/0x710 [ 3186.368296][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.368296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.368296][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.368296][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.368296][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.368296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.368296][ T72] [ 3186.369958][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3186.370225][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3186.370225][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.370225][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.370225][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.370225][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.370225][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.370225][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.370225][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.370225][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.370225][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.370225][ T72] netlink_unicast+0x449/0x710 [ 3186.370225][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.370225][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.370225][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.370225][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.370225][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.370225][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.370225][ T72] [ 3186.372183][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3186.372183][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.372183][ T72] ipv6_find_idev+0x102/0x170 [ 3186.372183][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.372183][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.372183][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.372183][ T72] netlink_unicast+0x449/0x710 [ 3186.372183][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.372183][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.372183][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.372183][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.372183][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.372183][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.372183][ T72] [ 3186.373688][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3186.373688][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.373688][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.373688][ T72] ipv6_find_idev+0x102/0x170 [ 3186.373688][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.373688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.373688][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.373688][ T72] netlink_unicast+0x449/0x710 [ 3186.373688][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.373688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.373688][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.373688][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.373688][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.373688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.373688][ T72] [ 3186.375332][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3186.375592][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3186.375592][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.375592][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.375592][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.375592][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.375592][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.375592][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.375592][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.375592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.375592][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.375592][ T72] netlink_unicast+0x449/0x710 [ 3186.375592][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.375592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.375592][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.375592][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.375592][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.375592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.375592][ T72] [ 3186.377555][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3186.377555][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.377555][ T72] ipv6_find_idev+0x102/0x170 [ 3186.377555][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.377555][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.377555][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.377555][ T72] netlink_unicast+0x449/0x710 [ 3186.377555][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.377555][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.377555][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.377555][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.377555][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.377555][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.377555][ T72] [ 3186.379058][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3186.379058][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.379058][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.379058][ T72] ipv6_find_idev+0x102/0x170 [ 3186.379058][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.379058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.379058][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.379058][ T72] netlink_unicast+0x449/0x710 [ 3186.379058][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.379058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.379058][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.379058][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.379058][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.379058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.379058][ T72] [ 3186.381114][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3186.381374][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3186.381374][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.381374][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.381374][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.381374][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.381374][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.381374][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.381374][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.381374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.381374][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.381374][ T72] netlink_unicast+0x449/0x710 [ 3186.381374][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.381374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.381374][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.381374][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.381374][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.381374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.381374][ T72] [ 3186.383322][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3186.383322][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.383322][ T72] ipv6_find_idev+0x102/0x170 [ 3186.383322][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.383322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.383322][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.383322][ T72] netlink_unicast+0x449/0x710 [ 3186.383322][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.383322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.383322][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.383322][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.383322][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.383322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.383322][ T72] [ 3186.384826][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3186.384826][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.384826][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.384826][ T72] ipv6_find_idev+0x102/0x170 [ 3186.384826][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.384826][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.384826][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.384826][ T72] netlink_unicast+0x449/0x710 [ 3186.384826][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.384826][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.384826][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.384826][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.384826][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.384826][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.384826][ T72] [ 3186.386522][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3186.386780][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3186.386780][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.386780][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.386780][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.386780][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.386780][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.386780][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.386780][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.386780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.386780][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.386780][ T72] netlink_unicast+0x449/0x710 [ 3186.386780][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.386780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.386780][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.386780][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.386780][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.386780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.386780][ T72] [ 3186.388857][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3186.388857][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.388857][ T72] ipv6_find_idev+0x102/0x170 [ 3186.388857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.388857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.388857][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.388857][ T72] netlink_unicast+0x449/0x710 [ 3186.388857][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.388857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.388857][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.388857][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.388857][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.388857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.388857][ T72] [ 3186.390602][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3186.390602][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.390602][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.390602][ T72] ipv6_find_idev+0x102/0x170 [ 3186.390602][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.390602][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.390602][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.390602][ T72] netlink_unicast+0x449/0x710 [ 3186.390602][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.390602][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.390602][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.390602][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.390602][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.390602][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.390602][ T72] [ 3186.392537][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3186.392845][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3186.392845][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.392845][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.392845][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.392845][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.392845][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.392845][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.392845][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.392845][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.392845][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.392845][ T72] netlink_unicast+0x449/0x710 [ 3186.392845][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.392845][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.392845][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.392845][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.392845][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.392845][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.392845][ T72] [ 3186.394993][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3186.394993][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.394993][ T72] ipv6_find_idev+0x102/0x170 [ 3186.394993][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.394993][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.394993][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.394993][ T72] netlink_unicast+0x449/0x710 [ 3186.394993][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.394993][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.394993][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.394993][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.394993][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.394993][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.394993][ T72] [ 3186.396626][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3186.396626][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.396626][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.396626][ T72] ipv6_find_idev+0x102/0x170 [ 3186.396626][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.396626][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.396626][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.396626][ T72] netlink_unicast+0x449/0x710 [ 3186.396626][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.396626][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.396626][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.396626][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.396626][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.396626][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.396626][ T72] [ 3186.398544][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3186.398864][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3186.398864][ T72] netdev_get_by_index+0x5e/0x80 [ 3186.398864][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3186.398864][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3186.398864][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3186.398864][ T72] ipv6_add_addr+0x411/0x2000 [ 3186.398864][ T72] inet6_addr_add+0x30e/0xa40 [ 3186.398864][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3186.398864][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.398864][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.398864][ T72] netlink_unicast+0x449/0x710 [ 3186.398864][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.398864][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.398864][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.398864][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.398864][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.398864][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.398864][ T72] [ 3186.401063][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3186.401063][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3186.401063][ T72] ipv6_find_idev+0x102/0x170 [ 3186.401063][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.401063][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.401063][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.401063][ T72] netlink_unicast+0x449/0x710 [ 3186.401063][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.401063][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.401063][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.401063][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.401063][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.401063][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.401063][ T72] [ 3186.402757][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3186.402757][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3186.402757][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3186.402757][ T72] ipv6_find_idev+0x102/0x170 [ 3186.402757][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3186.402757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3186.402757][ T72] netlink_rcv_skb+0x130/0x360 [ 3186.402757][ T72] netlink_unicast+0x449/0x710 [ 3186.402757][ T72] netlink_sendmsg+0x723/0xbe0 [ 3186.402757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3186.402757][ T72] ___sys_sendmsg+0xee/0x170 [ 3186.402757][ T72] __sys_sendmsg+0xcd/0x170 [ 3186.402757][ T72] do_syscall_64+0xc6/0x1e0 [ 3186.402757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3186.402757][ T72] [ 3196.646791][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3196.647189][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3196.647189][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.647189][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.647189][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.647189][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.647189][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.647189][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.647189][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.647189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.647189][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.647189][ T72] netlink_unicast+0x449/0x710 [ 3196.647189][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.647189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.647189][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.647189][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.647189][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.647189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.647189][ T72] [ 3196.649175][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3196.649175][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.649175][ T72] ipv6_find_idev+0x102/0x170 [ 3196.649175][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.649175][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.649175][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.649175][ T72] netlink_unicast+0x449/0x710 [ 3196.649175][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.649175][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.649175][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.649175][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.649175][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.649175][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.649175][ T72] [ 3196.650689][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3196.650689][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.650689][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.650689][ T72] ipv6_find_idev+0x102/0x170 [ 3196.650689][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.650689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.650689][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.650689][ T72] netlink_unicast+0x449/0x710 [ 3196.650689][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.650689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.650689][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.650689][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.650689][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.650689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.650689][ T72] [ 3196.652351][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3196.652624][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3196.652624][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.652624][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.652624][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.652624][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.652624][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.652624][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.652624][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.652624][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.652624][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.652624][ T72] netlink_unicast+0x449/0x710 [ 3196.652624][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.652624][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.652624][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.652624][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.652624][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.652624][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.652624][ T72] [ 3196.654586][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3196.654586][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.654586][ T72] ipv6_find_idev+0x102/0x170 [ 3196.654586][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.654586][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.654586][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.654586][ T72] netlink_unicast+0x449/0x710 [ 3196.654586][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.654586][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.654586][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.654586][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.654586][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.654586][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.654586][ T72] [ 3196.656116][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3196.656116][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.656116][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.656116][ T72] ipv6_find_idev+0x102/0x170 [ 3196.656116][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.656116][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.656116][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.656116][ T72] netlink_unicast+0x449/0x710 [ 3196.656116][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.656116][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.656116][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.656116][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.656116][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.656116][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.656116][ T72] [ 3196.657776][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3196.658047][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3196.658047][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.658047][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.658047][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.658047][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.658047][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.658047][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.658047][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.658047][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.658047][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.658047][ T72] netlink_unicast+0x449/0x710 [ 3196.658047][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.658047][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.658047][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.658047][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.658047][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.658047][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.658047][ T72] [ 3196.660004][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3196.660004][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.660004][ T72] ipv6_find_idev+0x102/0x170 [ 3196.660004][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.660004][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.660004][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.660004][ T72] netlink_unicast+0x449/0x710 [ 3196.660004][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.660004][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.660004][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.660004][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.660004][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.660004][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.660004][ T72] [ 3196.661528][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3196.661528][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.661528][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.661528][ T72] ipv6_find_idev+0x102/0x170 [ 3196.661528][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.661528][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.661528][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.661528][ T72] netlink_unicast+0x449/0x710 [ 3196.661528][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.661528][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.661528][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.661528][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.661528][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.661528][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.661528][ T72] [ 3196.663181][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3196.663448][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3196.663448][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.663448][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.663448][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.663448][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.663448][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.663448][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.663448][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.663448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.663448][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.663448][ T72] netlink_unicast+0x449/0x710 [ 3196.663448][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.663448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.663448][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.663448][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.663448][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.663448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.663448][ T72] [ 3196.665407][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3196.665407][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.665407][ T72] ipv6_find_idev+0x102/0x170 [ 3196.665407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.665407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.665407][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.665407][ T72] netlink_unicast+0x449/0x710 [ 3196.665407][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.665407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.665407][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.665407][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.665407][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.665407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.665407][ T72] [ 3196.666920][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3196.666920][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.666920][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.666920][ T72] ipv6_find_idev+0x102/0x170 [ 3196.666920][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.666920][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.666920][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.666920][ T72] netlink_unicast+0x449/0x710 [ 3196.666920][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.666920][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.666920][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.666920][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.666920][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.666920][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.666920][ T72] [ 3196.669026][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3196.669292][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3196.669292][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.669292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.669292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.669292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.669292][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.669292][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.669292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.669292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.669292][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.669292][ T72] netlink_unicast+0x449/0x710 [ 3196.669292][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.669292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.669292][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.669292][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.669292][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.669292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.669292][ T72] [ 3196.671242][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3196.671242][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.671242][ T72] ipv6_find_idev+0x102/0x170 [ 3196.671242][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.671242][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.671242][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.671242][ T72] netlink_unicast+0x449/0x710 [ 3196.671242][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.671242][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.671242][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.671242][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.671242][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.671242][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.671242][ T72] [ 3196.672753][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3196.672753][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.672753][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.672753][ T72] ipv6_find_idev+0x102/0x170 [ 3196.672753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.672753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.672753][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.672753][ T72] netlink_unicast+0x449/0x710 [ 3196.672753][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.672753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.672753][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.672753][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.672753][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.672753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.672753][ T72] [ 3196.674449][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3196.674740][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3196.674740][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.674740][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.674740][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.674740][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.674740][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.674740][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.674740][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.674740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.674740][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.674740][ T72] netlink_unicast+0x449/0x710 [ 3196.674740][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.674740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.674740][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.674740][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.674740][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.674740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.674740][ T72] [ 3196.676871][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3196.676871][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.676871][ T72] ipv6_find_idev+0x102/0x170 [ 3196.676871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.676871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.676871][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.676871][ T72] netlink_unicast+0x449/0x710 [ 3196.676871][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.676871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.676871][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.676871][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.676871][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.676871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.676871][ T72] [ 3196.678563][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3196.678563][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.678563][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.678563][ T72] ipv6_find_idev+0x102/0x170 [ 3196.678563][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.678563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.678563][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.678563][ T72] netlink_unicast+0x449/0x710 [ 3196.678563][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.678563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.678563][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.678563][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.678563][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.678563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.678563][ T72] [ 3196.680566][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3196.680880][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3196.680880][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.680880][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.680880][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.680880][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.680880][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.680880][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.680880][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.680880][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.680880][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.680880][ T72] netlink_unicast+0x449/0x710 [ 3196.680880][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.680880][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.680880][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.680880][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.680880][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.680880][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.680880][ T72] [ 3196.683029][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3196.683029][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.683029][ T72] ipv6_find_idev+0x102/0x170 [ 3196.683029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.683029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.683029][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.683029][ T72] netlink_unicast+0x449/0x710 [ 3196.683029][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.683029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.683029][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.683029][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.683029][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.683029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.683029][ T72] [ 3196.684662][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3196.684662][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.684662][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.684662][ T72] ipv6_find_idev+0x102/0x170 [ 3196.684662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.684662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.684662][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.684662][ T72] netlink_unicast+0x449/0x710 [ 3196.684662][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.684662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.684662][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.684662][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.684662][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.684662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.684662][ T72] [ 3196.686610][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3196.686924][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3196.686924][ T72] netdev_get_by_index+0x5e/0x80 [ 3196.686924][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3196.686924][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3196.686924][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3196.686924][ T72] ipv6_add_addr+0x411/0x2000 [ 3196.686924][ T72] inet6_addr_add+0x30e/0xa40 [ 3196.686924][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3196.686924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.686924][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.686924][ T72] netlink_unicast+0x449/0x710 [ 3196.686924][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.686924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.686924][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.686924][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.686924][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.686924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.686924][ T72] [ 3196.689070][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3196.689070][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3196.689070][ T72] ipv6_find_idev+0x102/0x170 [ 3196.689070][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.689070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.689070][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.689070][ T72] netlink_unicast+0x449/0x710 [ 3196.689070][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.689070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.689070][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.689070][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.689070][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.689070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.689070][ T72] [ 3196.690823][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3196.690823][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3196.690823][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3196.690823][ T72] ipv6_find_idev+0x102/0x170 [ 3196.690823][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3196.690823][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3196.690823][ T72] netlink_rcv_skb+0x130/0x360 [ 3196.690823][ T72] netlink_unicast+0x449/0x710 [ 3196.690823][ T72] netlink_sendmsg+0x723/0xbe0 [ 3196.690823][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3196.690823][ T72] ___sys_sendmsg+0xee/0x170 [ 3196.690823][ T72] __sys_sendmsg+0xcd/0x170 [ 3196.690823][ T72] do_syscall_64+0xc6/0x1e0 [ 3196.690823][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3196.690823][ T72] [ 3206.934818][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3206.935292][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3206.935292][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.935292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.935292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.935292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.935292][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.935292][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.935292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.935292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.935292][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.935292][ T72] netlink_unicast+0x449/0x710 [ 3206.935292][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.935292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.935292][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.935292][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.935292][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.935292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.935292][ T72] [ 3206.937313][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3206.937313][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.937313][ T72] ipv6_find_idev+0x102/0x170 [ 3206.937313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.937313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.937313][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.937313][ T72] netlink_unicast+0x449/0x710 [ 3206.937313][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.937313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.937313][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.937313][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.937313][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.937313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.937313][ T72] [ 3206.938831][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3206.938831][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.938831][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.938831][ T72] ipv6_find_idev+0x102/0x170 [ 3206.938831][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.938831][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.938831][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.938831][ T72] netlink_unicast+0x449/0x710 [ 3206.938831][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.938831][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.938831][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.938831][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.938831][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.938831][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.938831][ T72] [ 3206.940509][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3206.940773][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3206.940773][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.940773][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.940773][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.940773][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.940773][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.940773][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.940773][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.940773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.940773][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.940773][ T72] netlink_unicast+0x449/0x710 [ 3206.940773][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.940773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.940773][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.940773][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.940773][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.940773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.940773][ T72] [ 3206.942740][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3206.942740][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.942740][ T72] ipv6_find_idev+0x102/0x170 [ 3206.942740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.942740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.942740][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.942740][ T72] netlink_unicast+0x449/0x710 [ 3206.942740][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.942740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.942740][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.942740][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.942740][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.942740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.942740][ T72] [ 3206.944259][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3206.944259][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.944259][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.944259][ T72] ipv6_find_idev+0x102/0x170 [ 3206.944259][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.944259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.944259][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.944259][ T72] netlink_unicast+0x449/0x710 [ 3206.944259][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.944259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.944259][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.944259][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.944259][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.944259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.944259][ T72] [ 3206.945925][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3206.946200][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3206.946200][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.946200][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.946200][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.946200][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.946200][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.946200][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.946200][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.946200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.946200][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.946200][ T72] netlink_unicast+0x449/0x710 [ 3206.946200][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.946200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.946200][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.946200][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.946200][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.946200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.946200][ T72] [ 3206.948194][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3206.948194][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.948194][ T72] ipv6_find_idev+0x102/0x170 [ 3206.948194][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.948194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.948194][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.948194][ T72] netlink_unicast+0x449/0x710 [ 3206.948194][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.948194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.948194][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.948194][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.948194][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.948194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.948194][ T72] [ 3206.949712][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3206.949712][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.949712][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.949712][ T72] ipv6_find_idev+0x102/0x170 [ 3206.949712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.949712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.949712][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.949712][ T72] netlink_unicast+0x449/0x710 [ 3206.949712][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.949712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.949712][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.949712][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.949712][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.949712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.949712][ T72] [ 3206.951375][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3206.951642][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3206.951642][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.951642][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.951642][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.951642][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.951642][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.951642][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.951642][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.951642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.951642][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.951642][ T72] netlink_unicast+0x449/0x710 [ 3206.951642][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.951642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.951642][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.951642][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.951642][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.951642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.951642][ T72] [ 3206.953619][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3206.953619][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.953619][ T72] ipv6_find_idev+0x102/0x170 [ 3206.953619][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.953619][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.953619][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.953619][ T72] netlink_unicast+0x449/0x710 [ 3206.953619][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.953619][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.953619][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.953619][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.953619][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.953619][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.953619][ T72] [ 3206.955134][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3206.955134][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.955134][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.955134][ T72] ipv6_find_idev+0x102/0x170 [ 3206.955134][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.955134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.955134][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.955134][ T72] netlink_unicast+0x449/0x710 [ 3206.955134][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.955134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.955134][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.955134][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.955134][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.955134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.955134][ T72] [ 3206.957200][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3206.957470][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3206.957470][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.957470][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.957470][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.957470][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.957470][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.957470][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.957470][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.957470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.957470][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.957470][ T72] netlink_unicast+0x449/0x710 [ 3206.957470][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.957470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.957470][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.957470][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.957470][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.957470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.957470][ T72] [ 3206.959435][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3206.959435][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.959435][ T72] ipv6_find_idev+0x102/0x170 [ 3206.959435][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.959435][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.959435][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.959435][ T72] netlink_unicast+0x449/0x710 [ 3206.959435][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.959435][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.959435][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.959435][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.959435][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.959435][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.959435][ T72] [ 3206.960962][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3206.960962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.960962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.960962][ T72] ipv6_find_idev+0x102/0x170 [ 3206.960962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.960962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.960962][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.960962][ T72] netlink_unicast+0x449/0x710 [ 3206.960962][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.960962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.960962][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.960962][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.960962][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.960962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.960962][ T72] [ 3206.962665][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3206.962987][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3206.962987][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.962987][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.962987][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.962987][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.962987][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.962987][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.962987][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.962987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.962987][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.962987][ T72] netlink_unicast+0x449/0x710 [ 3206.962987][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.962987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.962987][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.962987][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.962987][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.962987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.962987][ T72] [ 3206.965094][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3206.965094][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.965094][ T72] ipv6_find_idev+0x102/0x170 [ 3206.965094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.965094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.965094][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.965094][ T72] netlink_unicast+0x449/0x710 [ 3206.965094][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.965094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.965094][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.965094][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.965094][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.965094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.965094][ T72] [ 3206.966800][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3206.966800][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.966800][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.966800][ T72] ipv6_find_idev+0x102/0x170 [ 3206.966800][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.966800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.966800][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.966800][ T72] netlink_unicast+0x449/0x710 [ 3206.966800][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.966800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.966800][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.966800][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.966800][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.966800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.966800][ T72] [ 3206.968771][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3206.969029][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3206.969029][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.969029][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.969029][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.969029][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.969029][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.969029][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.969029][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.969029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.969029][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.969029][ T72] netlink_unicast+0x449/0x710 [ 3206.969029][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.969029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.969029][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.969029][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.969029][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.969029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.969029][ T72] [ 3206.971275][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3206.971275][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.971275][ T72] ipv6_find_idev+0x102/0x170 [ 3206.971275][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.971275][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.971275][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.971275][ T72] netlink_unicast+0x449/0x710 [ 3206.971275][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.971275][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.971275][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.971275][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.971275][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.971275][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.971275][ T72] [ 3206.972924][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3206.972924][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.972924][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.972924][ T72] ipv6_find_idev+0x102/0x170 [ 3206.972924][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.972924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.972924][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.972924][ T72] netlink_unicast+0x449/0x710 [ 3206.972924][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.972924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.972924][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.972924][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.972924][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.972924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.972924][ T72] [ 3206.974877][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3206.975139][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3206.975139][ T72] netdev_get_by_index+0x5e/0x80 [ 3206.975139][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3206.975139][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3206.975139][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3206.975139][ T72] ipv6_add_addr+0x411/0x2000 [ 3206.975139][ T72] inet6_addr_add+0x30e/0xa40 [ 3206.975139][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3206.975139][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.975139][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.975139][ T72] netlink_unicast+0x449/0x710 [ 3206.975139][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.975139][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.975139][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.975139][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.975139][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.975139][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.975139][ T72] [ 3206.977311][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3206.977311][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3206.977311][ T72] ipv6_find_idev+0x102/0x170 [ 3206.977311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.977311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.977311][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.977311][ T72] netlink_unicast+0x449/0x710 [ 3206.977311][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.977311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.977311][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.977311][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.977311][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.977311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.977311][ T72] [ 3206.979088][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3206.979088][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3206.979088][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3206.979088][ T72] ipv6_find_idev+0x102/0x170 [ 3206.979088][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3206.979088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3206.979088][ T72] netlink_rcv_skb+0x130/0x360 [ 3206.979088][ T72] netlink_unicast+0x449/0x710 [ 3206.979088][ T72] netlink_sendmsg+0x723/0xbe0 [ 3206.979088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3206.979088][ T72] ___sys_sendmsg+0xee/0x170 [ 3206.979088][ T72] __sys_sendmsg+0xcd/0x170 [ 3206.979088][ T72] do_syscall_64+0xc6/0x1e0 [ 3206.979088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3206.979088][ T72] [ 3217.222936][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3217.223344][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3217.223344][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.223344][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.223344][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.223344][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.223344][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.223344][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.223344][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.223344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.223344][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.223344][ T72] netlink_unicast+0x449/0x710 [ 3217.223344][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.223344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.223344][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.223344][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.223344][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.223344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.223344][ T72] [ 3217.225327][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3217.225327][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.225327][ T72] ipv6_find_idev+0x102/0x170 [ 3217.225327][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.225327][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.225327][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.225327][ T72] netlink_unicast+0x449/0x710 [ 3217.225327][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.225327][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.225327][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.225327][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.225327][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.225327][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.225327][ T72] [ 3217.226854][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3217.226854][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.226854][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.226854][ T72] ipv6_find_idev+0x102/0x170 [ 3217.226854][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.226854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.226854][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.226854][ T72] netlink_unicast+0x449/0x710 [ 3217.226854][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.226854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.226854][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.226854][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.226854][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.226854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.226854][ T72] [ 3217.228522][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3217.228800][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3217.228800][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.228800][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.228800][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.228800][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.228800][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.228800][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.228800][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.228800][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.228800][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.228800][ T72] netlink_unicast+0x449/0x710 [ 3217.228800][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.228800][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.228800][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.228800][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.228800][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.228800][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.228800][ T72] [ 3217.230761][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3217.230761][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.230761][ T72] ipv6_find_idev+0x102/0x170 [ 3217.230761][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.230761][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.230761][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.230761][ T72] netlink_unicast+0x449/0x710 [ 3217.230761][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.230761][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.230761][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.230761][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.230761][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.230761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.230761][ T72] [ 3217.232274][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3217.232274][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.232274][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.232274][ T72] ipv6_find_idev+0x102/0x170 [ 3217.232274][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.232274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.232274][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.232274][ T72] netlink_unicast+0x449/0x710 [ 3217.232274][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.232274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.232274][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.232274][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.232274][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.232274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.232274][ T72] [ 3217.233936][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3217.234197][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3217.234197][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.234197][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.234197][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.234197][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.234197][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.234197][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.234197][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.234197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.234197][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.234197][ T72] netlink_unicast+0x449/0x710 [ 3217.234197][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.234197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.234197][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.234197][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.234197][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.234197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.234197][ T72] [ 3217.236153][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3217.236153][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.236153][ T72] ipv6_find_idev+0x102/0x170 [ 3217.236153][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.236153][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.236153][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.236153][ T72] netlink_unicast+0x449/0x710 [ 3217.236153][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.236153][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.236153][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.236153][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.236153][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.236153][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.236153][ T72] [ 3217.237662][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3217.237662][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.237662][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.237662][ T72] ipv6_find_idev+0x102/0x170 [ 3217.237662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.237662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.237662][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.237662][ T72] netlink_unicast+0x449/0x710 [ 3217.237662][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.237662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.237662][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.237662][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.237662][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.237662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.237662][ T72] [ 3217.239311][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3217.239580][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3217.239580][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.239580][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.239580][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.239580][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.239580][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.239580][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.239580][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.239580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.239580][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.239580][ T72] netlink_unicast+0x449/0x710 [ 3217.239580][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.239580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.239580][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.239580][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.239580][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.239580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.239580][ T72] [ 3217.241527][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3217.241527][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.241527][ T72] ipv6_find_idev+0x102/0x170 [ 3217.241527][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.241527][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.241527][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.241527][ T72] netlink_unicast+0x449/0x710 [ 3217.241527][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.241527][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.241527][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.241527][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.241527][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.241527][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.241527][ T72] [ 3217.243035][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3217.243035][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.243035][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.243035][ T72] ipv6_find_idev+0x102/0x170 [ 3217.243035][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.243035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.243035][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.243035][ T72] netlink_unicast+0x449/0x710 [ 3217.243035][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.243035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.243035][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.243035][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.243035][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.243035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.243035][ T72] [ 3217.244728][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3217.245043][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3217.245043][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.245043][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.245043][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.245043][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.245043][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.245043][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.245043][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.245043][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.245043][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.245043][ T72] netlink_unicast+0x449/0x710 [ 3217.245043][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.245043][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.245043][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.245043][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.245043][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.245043][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.245043][ T72] [ 3217.247001][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3217.247001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.247001][ T72] ipv6_find_idev+0x102/0x170 [ 3217.247001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.247001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.247001][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.247001][ T72] netlink_unicast+0x449/0x710 [ 3217.247001][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.247001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.247001][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.247001][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.247001][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.247001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.247001][ T72] [ 3217.248509][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3217.248509][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.248509][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.248509][ T72] ipv6_find_idev+0x102/0x170 [ 3217.248509][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.248509][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.248509][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.248509][ T72] netlink_unicast+0x449/0x710 [ 3217.248509][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.248509][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.248509][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.248509][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.248509][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.248509][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.248509][ T72] [ 3217.250381][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3217.250639][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3217.250639][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.250639][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.250639][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.250639][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.250639][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.250639][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.250639][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.250639][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.250639][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.250639][ T72] netlink_unicast+0x449/0x710 [ 3217.250639][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.250639][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.250639][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.250639][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.250639][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.250639][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.250639][ T72] [ 3217.252903][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3217.252903][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.252903][ T72] ipv6_find_idev+0x102/0x170 [ 3217.252903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.252903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.252903][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.252903][ T72] netlink_unicast+0x449/0x710 [ 3217.252903][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.252903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.252903][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.252903][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.252903][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.252903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.252903][ T72] [ 3217.254588][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3217.254588][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.254588][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.254588][ T72] ipv6_find_idev+0x102/0x170 [ 3217.254588][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.254588][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.254588][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.254588][ T72] netlink_unicast+0x449/0x710 [ 3217.254588][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.254588][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.254588][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.254588][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.254588][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.254588][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.254588][ T72] [ 3217.256470][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3217.256725][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3217.256725][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.256725][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.256725][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.256725][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.256725][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.256725][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.256725][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.256725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.256725][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.256725][ T72] netlink_unicast+0x449/0x710 [ 3217.256725][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.256725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.256725][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.256725][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.256725][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.256725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.256725][ T72] [ 3217.258926][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3217.258926][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.258926][ T72] ipv6_find_idev+0x102/0x170 [ 3217.258926][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.258926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.258926][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.258926][ T72] netlink_unicast+0x449/0x710 [ 3217.258926][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.258926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.258926][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.258926][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.258926][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.258926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.258926][ T72] [ 3217.260679][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3217.260679][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.260679][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.260679][ T72] ipv6_find_idev+0x102/0x170 [ 3217.260679][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.260679][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.260679][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.260679][ T72] netlink_unicast+0x449/0x710 [ 3217.260679][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.260679][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.260679][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.260679][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.260679][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.260679][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.260679][ T72] [ 3217.262538][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3217.262854][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3217.262854][ T72] netdev_get_by_index+0x5e/0x80 [ 3217.262854][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3217.262854][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3217.262854][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3217.262854][ T72] ipv6_add_addr+0x411/0x2000 [ 3217.262854][ T72] inet6_addr_add+0x30e/0xa40 [ 3217.262854][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3217.262854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.262854][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.262854][ T72] netlink_unicast+0x449/0x710 [ 3217.262854][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.262854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.262854][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.262854][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.262854][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.262854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.262854][ T72] [ 3217.264983][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3217.264983][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3217.264983][ T72] ipv6_find_idev+0x102/0x170 [ 3217.264983][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.264983][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.264983][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.264983][ T72] netlink_unicast+0x449/0x710 [ 3217.264983][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.264983][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.264983][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.264983][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.264983][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.264983][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.264983][ T72] [ 3217.266676][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3217.266676][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3217.266676][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3217.266676][ T72] ipv6_find_idev+0x102/0x170 [ 3217.266676][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3217.266676][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3217.266676][ T72] netlink_rcv_skb+0x130/0x360 [ 3217.266676][ T72] netlink_unicast+0x449/0x710 [ 3217.266676][ T72] netlink_sendmsg+0x723/0xbe0 [ 3217.266676][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3217.266676][ T72] ___sys_sendmsg+0xee/0x170 [ 3217.266676][ T72] __sys_sendmsg+0xcd/0x170 [ 3217.266676][ T72] do_syscall_64+0xc6/0x1e0 [ 3217.266676][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3217.266676][ T72] [ 3227.510891][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3227.511423][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3227.511423][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.511423][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.511423][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.511423][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.511423][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.511423][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.511423][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.511423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.511423][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.511423][ T72] netlink_unicast+0x449/0x710 [ 3227.511423][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.511423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.511423][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.511423][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.511423][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.511423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.511423][ T72] [ 3227.513395][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3227.513395][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.513395][ T72] ipv6_find_idev+0x102/0x170 [ 3227.513395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.513395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.513395][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.513395][ T72] netlink_unicast+0x449/0x710 [ 3227.513395][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.513395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.513395][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.513395][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.513395][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.513395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.513395][ T72] [ 3227.514911][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3227.514911][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.514911][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.514911][ T72] ipv6_find_idev+0x102/0x170 [ 3227.514911][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.514911][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.514911][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.514911][ T72] netlink_unicast+0x449/0x710 [ 3227.514911][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.514911][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.514911][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.514911][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.514911][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.514911][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.514911][ T72] [ 3227.516584][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3227.516861][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3227.516861][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.516861][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.516861][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.516861][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.516861][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.516861][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.516861][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.516861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.516861][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.516861][ T72] netlink_unicast+0x449/0x710 [ 3227.516861][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.516861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.516861][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.516861][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.516861][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.516861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.516861][ T72] [ 3227.518818][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3227.518818][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.518818][ T72] ipv6_find_idev+0x102/0x170 [ 3227.518818][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.518818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.518818][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.518818][ T72] netlink_unicast+0x449/0x710 [ 3227.518818][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.518818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.518818][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.518818][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.518818][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.518818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.518818][ T72] [ 3227.520330][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3227.520330][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.520330][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.520330][ T72] ipv6_find_idev+0x102/0x170 [ 3227.520330][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.520330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.520330][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.520330][ T72] netlink_unicast+0x449/0x710 [ 3227.520330][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.520330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.520330][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.520330][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.520330][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.520330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.520330][ T72] [ 3227.521993][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3227.522252][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3227.522252][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.522252][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.522252][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.522252][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.522252][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.522252][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.522252][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.522252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.522252][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.522252][ T72] netlink_unicast+0x449/0x710 [ 3227.522252][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.522252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.522252][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.522252][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.522252][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.522252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.522252][ T72] [ 3227.524213][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3227.524213][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.524213][ T72] ipv6_find_idev+0x102/0x170 [ 3227.524213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.524213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.524213][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.524213][ T72] netlink_unicast+0x449/0x710 [ 3227.524213][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.524213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.524213][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.524213][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.524213][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.524213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.524213][ T72] [ 3227.525721][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3227.525721][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.525721][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.525721][ T72] ipv6_find_idev+0x102/0x170 [ 3227.525721][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.525721][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.525721][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.525721][ T72] netlink_unicast+0x449/0x710 [ 3227.525721][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.525721][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.525721][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.525721][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.525721][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.525721][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.525721][ T72] [ 3227.527374][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3227.527638][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3227.527638][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.527638][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.527638][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.527638][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.527638][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.527638][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.527638][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.527638][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.527638][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.527638][ T72] netlink_unicast+0x449/0x710 [ 3227.527638][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.527638][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.527638][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.527638][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.527638][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.527638][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.527638][ T72] [ 3227.529593][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3227.529593][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.529593][ T72] ipv6_find_idev+0x102/0x170 [ 3227.529593][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.529593][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.529593][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.529593][ T72] netlink_unicast+0x449/0x710 [ 3227.529593][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.529593][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.529593][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.529593][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.529593][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.529593][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.529593][ T72] [ 3227.531096][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3227.531096][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.531096][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.531096][ T72] ipv6_find_idev+0x102/0x170 [ 3227.531096][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.531096][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.531096][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.531096][ T72] netlink_unicast+0x449/0x710 [ 3227.531096][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.531096][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.531096][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.531096][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.531096][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.531096][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.531096][ T72] [ 3227.533149][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3227.533410][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3227.533410][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.533410][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.533410][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.533410][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.533410][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.533410][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.533410][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.533410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.533410][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.533410][ T72] netlink_unicast+0x449/0x710 [ 3227.533410][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.533410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.533410][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.533410][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.533410][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.533410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.533410][ T72] [ 3227.535353][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3227.535353][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.535353][ T72] ipv6_find_idev+0x102/0x170 [ 3227.535353][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.535353][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.535353][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.535353][ T72] netlink_unicast+0x449/0x710 [ 3227.535353][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.535353][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.535353][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.535353][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.535353][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.535353][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.535353][ T72] [ 3227.536867][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3227.536867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.536867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.536867][ T72] ipv6_find_idev+0x102/0x170 [ 3227.536867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.536867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.536867][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.536867][ T72] netlink_unicast+0x449/0x710 [ 3227.536867][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.536867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.536867][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.536867][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.536867][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.536867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.536867][ T72] [ 3227.538547][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3227.538862][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3227.538862][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.538862][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.538862][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.538862][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.538862][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.538862][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.538862][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.538862][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.538862][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.538862][ T72] netlink_unicast+0x449/0x710 [ 3227.538862][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.538862][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.538862][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.538862][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.538862][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.538862][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.538862][ T72] [ 3227.540820][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3227.540820][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.540820][ T72] ipv6_find_idev+0x102/0x170 [ 3227.540820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.540820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.540820][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.540820][ T72] netlink_unicast+0x449/0x710 [ 3227.540820][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.540820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.540820][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.540820][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.540820][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.540820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.540820][ T72] [ 3227.542581][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3227.542581][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.542581][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.542581][ T72] ipv6_find_idev+0x102/0x170 [ 3227.542581][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.542581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.542581][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.542581][ T72] netlink_unicast+0x449/0x710 [ 3227.542581][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.542581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.542581][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.542581][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.542581][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.542581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.542581][ T72] [ 3227.544455][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3227.544717][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3227.544717][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.544717][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.544717][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.544717][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.544717][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.544717][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.544717][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.544717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.544717][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.544717][ T72] netlink_unicast+0x449/0x710 [ 3227.544717][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.544717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.544717][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.544717][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.544717][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.544717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.544717][ T72] [ 3227.547016][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3227.547016][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.547016][ T72] ipv6_find_idev+0x102/0x170 [ 3227.547016][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.547016][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.547016][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.547016][ T72] netlink_unicast+0x449/0x710 [ 3227.547016][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.547016][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.547016][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.547016][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.547016][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.547016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.547016][ T72] [ 3227.548719][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3227.548719][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.548719][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.548719][ T72] ipv6_find_idev+0x102/0x170 [ 3227.548719][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.548719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.548719][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.548719][ T72] netlink_unicast+0x449/0x710 [ 3227.548719][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.548719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.548719][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.548719][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.548719][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.548719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.548719][ T72] [ 3227.550603][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3227.550917][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3227.550917][ T72] netdev_get_by_index+0x5e/0x80 [ 3227.550917][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3227.550917][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3227.550917][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3227.550917][ T72] ipv6_add_addr+0x411/0x2000 [ 3227.550917][ T72] inet6_addr_add+0x30e/0xa40 [ 3227.550917][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3227.550917][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.550917][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.550917][ T72] netlink_unicast+0x449/0x710 [ 3227.550917][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.550917][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.550917][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.550917][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.550917][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.550917][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.550917][ T72] [ 3227.553125][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3227.553125][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3227.553125][ T72] ipv6_find_idev+0x102/0x170 [ 3227.553125][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.553125][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.553125][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.553125][ T72] netlink_unicast+0x449/0x710 [ 3227.553125][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.553125][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.553125][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.553125][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.553125][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.553125][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.553125][ T72] [ 3227.554820][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3227.554820][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3227.554820][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3227.554820][ T72] ipv6_find_idev+0x102/0x170 [ 3227.554820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3227.554820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3227.554820][ T72] netlink_rcv_skb+0x130/0x360 [ 3227.554820][ T72] netlink_unicast+0x449/0x710 [ 3227.554820][ T72] netlink_sendmsg+0x723/0xbe0 [ 3227.554820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3227.554820][ T72] ___sys_sendmsg+0xee/0x170 [ 3227.554820][ T72] __sys_sendmsg+0xcd/0x170 [ 3227.554820][ T72] do_syscall_64+0xc6/0x1e0 [ 3227.554820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3227.554820][ T72] [ 3237.798919][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3237.799330][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3237.799330][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.799330][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.799330][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.799330][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.799330][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.799330][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.799330][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.799330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.799330][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.799330][ T72] netlink_unicast+0x449/0x710 [ 3237.799330][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.799330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.799330][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.799330][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.799330][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.799330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.799330][ T72] [ 3237.801314][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3237.801314][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.801314][ T72] ipv6_find_idev+0x102/0x170 [ 3237.801314][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.801314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.801314][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.801314][ T72] netlink_unicast+0x449/0x710 [ 3237.801314][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.801314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.801314][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.801314][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.801314][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.801314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.801314][ T72] [ 3237.802839][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3237.802839][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.802839][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.802839][ T72] ipv6_find_idev+0x102/0x170 [ 3237.802839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.802839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.802839][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.802839][ T72] netlink_unicast+0x449/0x710 [ 3237.802839][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.802839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.802839][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.802839][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.802839][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.802839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.802839][ T72] [ 3237.804508][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3237.804798][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3237.804798][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.804798][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.804798][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.804798][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.804798][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.804798][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.804798][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.804798][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.804798][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.804798][ T72] netlink_unicast+0x449/0x710 [ 3237.804798][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.804798][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.804798][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.804798][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.804798][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.804798][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.804798][ T72] [ 3237.806769][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3237.806769][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.806769][ T72] ipv6_find_idev+0x102/0x170 [ 3237.806769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.806769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.806769][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.806769][ T72] netlink_unicast+0x449/0x710 [ 3237.806769][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.806769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.806769][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.806769][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.806769][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.806769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.806769][ T72] [ 3237.808282][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3237.808282][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.808282][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.808282][ T72] ipv6_find_idev+0x102/0x170 [ 3237.808282][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.808282][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.808282][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.808282][ T72] netlink_unicast+0x449/0x710 [ 3237.808282][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.808282][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.808282][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.808282][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.808282][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.808282][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.808282][ T72] [ 3237.809933][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3237.810190][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3237.810190][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.810190][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.810190][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.810190][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.810190][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.810190][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.810190][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.810190][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.810190][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.810190][ T72] netlink_unicast+0x449/0x710 [ 3237.810190][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.810190][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.810190][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.810190][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.810190][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.810190][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.810190][ T72] [ 3237.812146][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3237.812146][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.812146][ T72] ipv6_find_idev+0x102/0x170 [ 3237.812146][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.812146][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.812146][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.812146][ T72] netlink_unicast+0x449/0x710 [ 3237.812146][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.812146][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.812146][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.812146][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.812146][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.812146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.812146][ T72] [ 3237.813665][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3237.813665][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.813665][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.813665][ T72] ipv6_find_idev+0x102/0x170 [ 3237.813665][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.813665][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.813665][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.813665][ T72] netlink_unicast+0x449/0x710 [ 3237.813665][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.813665][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.813665][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.813665][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.813665][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.813665][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.813665][ T72] [ 3237.815313][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3237.815584][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3237.815584][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.815584][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.815584][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.815584][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.815584][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.815584][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.815584][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.815584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.815584][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.815584][ T72] netlink_unicast+0x449/0x710 [ 3237.815584][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.815584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.815584][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.815584][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.815584][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.815584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.815584][ T72] [ 3237.817543][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3237.817543][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.817543][ T72] ipv6_find_idev+0x102/0x170 [ 3237.817543][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.817543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.817543][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.817543][ T72] netlink_unicast+0x449/0x710 [ 3237.817543][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.817543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.817543][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.817543][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.817543][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.817543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.817543][ T72] [ 3237.819057][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3237.819057][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.819057][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.819057][ T72] ipv6_find_idev+0x102/0x170 [ 3237.819057][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.819057][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.819057][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.819057][ T72] netlink_unicast+0x449/0x710 [ 3237.819057][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.819057][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.819057][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.819057][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.819057][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.819057][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.819057][ T72] [ 3237.821119][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3237.821381][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3237.821381][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.821381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.821381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.821381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.821381][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.821381][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.821381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.821381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.821381][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.821381][ T72] netlink_unicast+0x449/0x710 [ 3237.821381][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.821381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.821381][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.821381][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.821381][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.821381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.821381][ T72] [ 3237.823332][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3237.823332][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.823332][ T72] ipv6_find_idev+0x102/0x170 [ 3237.823332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.823332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.823332][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.823332][ T72] netlink_unicast+0x449/0x710 [ 3237.823332][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.823332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.823332][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.823332][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.823332][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.823332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.823332][ T72] [ 3237.824843][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3237.824843][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.824843][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.824843][ T72] ipv6_find_idev+0x102/0x170 [ 3237.824843][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.824843][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.824843][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.824843][ T72] netlink_unicast+0x449/0x710 [ 3237.824843][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.824843][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.824843][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.824843][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.824843][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.824843][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.824843][ T72] [ 3237.826567][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3237.826973][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3237.826973][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.826973][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.826973][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.826973][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.826973][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.826973][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.826973][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.826973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.826973][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.826973][ T72] netlink_unicast+0x449/0x710 [ 3237.826973][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.826973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.826973][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.826973][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.826973][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.826973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.826973][ T72] [ 3237.828998][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3237.828998][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.828998][ T72] ipv6_find_idev+0x102/0x170 [ 3237.828998][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.828998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.828998][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.828998][ T72] netlink_unicast+0x449/0x710 [ 3237.828998][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.828998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.828998][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.828998][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.828998][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.828998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.828998][ T72] [ 3237.830692][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3237.830692][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.830692][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.830692][ T72] ipv6_find_idev+0x102/0x170 [ 3237.830692][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.830692][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.830692][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.830692][ T72] netlink_unicast+0x449/0x710 [ 3237.830692][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.830692][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.830692][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.830692][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.830692][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.830692][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.830692][ T72] [ 3237.832643][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3237.832959][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3237.832959][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.832959][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.832959][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.832959][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.832959][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.832959][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.832959][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.832959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.832959][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.832959][ T72] netlink_unicast+0x449/0x710 [ 3237.832959][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.832959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.832959][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.832959][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.832959][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.832959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.832959][ T72] [ 3237.835095][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3237.835095][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.835095][ T72] ipv6_find_idev+0x102/0x170 [ 3237.835095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.835095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.835095][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.835095][ T72] netlink_unicast+0x449/0x710 [ 3237.835095][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.835095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.835095][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.835095][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.835095][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.835095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.835095][ T72] [ 3237.836842][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3237.836842][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.836842][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.836842][ T72] ipv6_find_idev+0x102/0x170 [ 3237.836842][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.836842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.836842][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.836842][ T72] netlink_unicast+0x449/0x710 [ 3237.836842][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.836842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.836842][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.836842][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.836842][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.836842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.836842][ T72] [ 3237.838792][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3237.839051][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3237.839051][ T72] netdev_get_by_index+0x5e/0x80 [ 3237.839051][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3237.839051][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3237.839051][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3237.839051][ T72] ipv6_add_addr+0x411/0x2000 [ 3237.839051][ T72] inet6_addr_add+0x30e/0xa40 [ 3237.839051][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3237.839051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.839051][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.839051][ T72] netlink_unicast+0x449/0x710 [ 3237.839051][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.839051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.839051][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.839051][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.839051][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.839051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.839051][ T72] [ 3237.841183][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3237.841183][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3237.841183][ T72] ipv6_find_idev+0x102/0x170 [ 3237.841183][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.841183][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.841183][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.841183][ T72] netlink_unicast+0x449/0x710 [ 3237.841183][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.841183][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.841183][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.841183][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.841183][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.841183][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.841183][ T72] [ 3237.842925][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3237.842925][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3237.842925][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3237.842925][ T72] ipv6_find_idev+0x102/0x170 [ 3237.842925][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3237.842925][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3237.842925][ T72] netlink_rcv_skb+0x130/0x360 [ 3237.842925][ T72] netlink_unicast+0x449/0x710 [ 3237.842925][ T72] netlink_sendmsg+0x723/0xbe0 [ 3237.842925][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3237.842925][ T72] ___sys_sendmsg+0xee/0x170 [ 3237.842925][ T72] __sys_sendmsg+0xcd/0x170 [ 3237.842925][ T72] do_syscall_64+0xc6/0x1e0 [ 3237.842925][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3237.842925][ T72] [ 3248.086859][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3248.087269][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3248.087269][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.087269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.087269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.087269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.087269][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.087269][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.087269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.087269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.087269][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.087269][ T72] netlink_unicast+0x449/0x710 [ 3248.087269][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.087269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.087269][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.087269][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.087269][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.087269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.087269][ T72] [ 3248.089359][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3248.089359][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.089359][ T72] ipv6_find_idev+0x102/0x170 [ 3248.089359][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.089359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.089359][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.089359][ T72] netlink_unicast+0x449/0x710 [ 3248.089359][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.089359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.089359][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.089359][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.089359][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.089359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.089359][ T72] [ 3248.090871][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3248.090871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.090871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.090871][ T72] ipv6_find_idev+0x102/0x170 [ 3248.090871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.090871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.090871][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.090871][ T72] netlink_unicast+0x449/0x710 [ 3248.090871][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.090871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.090871][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.090871][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.090871][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.090871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.090871][ T72] [ 3248.092534][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3248.092812][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3248.092812][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.092812][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.092812][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.092812][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.092812][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.092812][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.092812][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.092812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.092812][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.092812][ T72] netlink_unicast+0x449/0x710 [ 3248.092812][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.092812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.092812][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.092812][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.092812][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.092812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.092812][ T72] [ 3248.094765][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3248.094765][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.094765][ T72] ipv6_find_idev+0x102/0x170 [ 3248.094765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.094765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.094765][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.094765][ T72] netlink_unicast+0x449/0x710 [ 3248.094765][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.094765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.094765][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.094765][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.094765][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.094765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.094765][ T72] [ 3248.096284][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3248.096284][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.096284][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.096284][ T72] ipv6_find_idev+0x102/0x170 [ 3248.096284][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.096284][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.096284][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.096284][ T72] netlink_unicast+0x449/0x710 [ 3248.096284][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.096284][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.096284][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.096284][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.096284][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.096284][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.096284][ T72] [ 3248.097937][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3248.098195][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3248.098195][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.098195][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.098195][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.098195][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.098195][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.098195][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.098195][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.098195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.098195][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.098195][ T72] netlink_unicast+0x449/0x710 [ 3248.098195][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.098195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.098195][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.098195][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.098195][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.098195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.098195][ T72] [ 3248.100160][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3248.100160][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.100160][ T72] ipv6_find_idev+0x102/0x170 [ 3248.100160][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.100160][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.100160][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.100160][ T72] netlink_unicast+0x449/0x710 [ 3248.100160][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.100160][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.100160][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.100160][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.100160][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.100160][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.100160][ T72] [ 3248.101668][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3248.101668][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.101668][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.101668][ T72] ipv6_find_idev+0x102/0x170 [ 3248.101668][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.101668][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.101668][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.101668][ T72] netlink_unicast+0x449/0x710 [ 3248.101668][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.101668][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.101668][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.101668][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.101668][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.101668][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.101668][ T72] [ 3248.103310][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3248.103580][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3248.103580][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.103580][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.103580][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.103580][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.103580][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.103580][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.103580][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.103580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.103580][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.103580][ T72] netlink_unicast+0x449/0x710 [ 3248.103580][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.103580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.103580][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.103580][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.103580][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.103580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.103580][ T72] [ 3248.105546][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3248.105546][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.105546][ T72] ipv6_find_idev+0x102/0x170 [ 3248.105546][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.105546][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.105546][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.105546][ T72] netlink_unicast+0x449/0x710 [ 3248.105546][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.105546][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.105546][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.105546][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.105546][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.105546][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.105546][ T72] [ 3248.107617][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3248.107617][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.107617][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.107617][ T72] ipv6_find_idev+0x102/0x170 [ 3248.107617][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.107617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.107617][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.107617][ T72] netlink_unicast+0x449/0x710 [ 3248.107617][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.107617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.107617][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.107617][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.107617][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.107617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.107617][ T72] [ 3248.109667][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3248.110267][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3248.110267][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.110267][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.110267][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.110267][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.110267][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.110267][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.110267][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.110267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.110267][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.110267][ T72] netlink_unicast+0x449/0x710 [ 3248.110267][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.110267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.110267][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.110267][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.110267][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.110267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.110267][ T72] [ 3248.112210][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3248.112210][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.112210][ T72] ipv6_find_idev+0x102/0x170 [ 3248.112210][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.112210][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.112210][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.112210][ T72] netlink_unicast+0x449/0x710 [ 3248.112210][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.112210][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.112210][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.112210][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.112210][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.112210][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.112210][ T72] [ 3248.113714][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3248.113714][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.113714][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.113714][ T72] ipv6_find_idev+0x102/0x170 [ 3248.113714][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.113714][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.113714][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.113714][ T72] netlink_unicast+0x449/0x710 [ 3248.113714][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.113714][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.113714][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.113714][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.113714][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.113714][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.113714][ T72] [ 3248.115358][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3248.115623][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3248.115623][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.115623][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.115623][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.115623][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.115623][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.115623][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.115623][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.115623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.115623][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.115623][ T72] netlink_unicast+0x449/0x710 [ 3248.115623][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.115623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.115623][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.115623][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.115623][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.115623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.115623][ T72] [ 3248.117583][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3248.117583][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.117583][ T72] ipv6_find_idev+0x102/0x170 [ 3248.117583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.117583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.117583][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.117583][ T72] netlink_unicast+0x449/0x710 [ 3248.117583][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.117583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.117583][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.117583][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.117583][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.117583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.117583][ T72] [ 3248.119150][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3248.119150][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.119150][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.119150][ T72] ipv6_find_idev+0x102/0x170 [ 3248.119150][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.119150][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.119150][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.119150][ T72] netlink_unicast+0x449/0x710 [ 3248.119150][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.119150][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.119150][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.119150][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.119150][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.119150][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.119150][ T72] [ 3248.121017][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3248.121279][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3248.121279][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.121279][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.121279][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.121279][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.121279][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.121279][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.121279][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.121279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.121279][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.121279][ T72] netlink_unicast+0x449/0x710 [ 3248.121279][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.121279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.121279][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.121279][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.121279][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.121279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.121279][ T72] [ 3248.123471][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3248.123471][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.123471][ T72] ipv6_find_idev+0x102/0x170 [ 3248.123471][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.123471][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.123471][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.123471][ T72] netlink_unicast+0x449/0x710 [ 3248.123471][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.123471][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.123471][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.123471][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.123471][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.123471][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.123471][ T72] [ 3248.125151][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3248.125151][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.125151][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.125151][ T72] ipv6_find_idev+0x102/0x170 [ 3248.125151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.125151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.125151][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.125151][ T72] netlink_unicast+0x449/0x710 [ 3248.125151][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.125151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.125151][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.125151][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.125151][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.125151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.125151][ T72] [ 3248.127027][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3248.127287][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3248.127287][ T72] netdev_get_by_index+0x5e/0x80 [ 3248.127287][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3248.127287][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3248.127287][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3248.127287][ T72] ipv6_add_addr+0x411/0x2000 [ 3248.127287][ T72] inet6_addr_add+0x30e/0xa40 [ 3248.127287][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3248.127287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.127287][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.127287][ T72] netlink_unicast+0x449/0x710 [ 3248.127287][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.127287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.127287][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.127287][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.127287][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.127287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.127287][ T72] [ 3248.129478][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3248.129478][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3248.129478][ T72] ipv6_find_idev+0x102/0x170 [ 3248.129478][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.129478][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.129478][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.129478][ T72] netlink_unicast+0x449/0x710 [ 3248.129478][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.129478][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.129478][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.129478][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.129478][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.129478][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.129478][ T72] [ 3248.131506][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3248.131506][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3248.131506][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3248.131506][ T72] ipv6_find_idev+0x102/0x170 [ 3248.131506][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3248.131506][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3248.131506][ T72] netlink_rcv_skb+0x130/0x360 [ 3248.131506][ T72] netlink_unicast+0x449/0x710 [ 3248.131506][ T72] netlink_sendmsg+0x723/0xbe0 [ 3248.131506][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3248.131506][ T72] ___sys_sendmsg+0xee/0x170 [ 3248.131506][ T72] __sys_sendmsg+0xcd/0x170 [ 3248.131506][ T72] do_syscall_64+0xc6/0x1e0 [ 3248.131506][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3248.131506][ T72] [ 3258.374891][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3258.375356][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3258.375356][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.375356][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.375356][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.375356][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.375356][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.375356][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.375356][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.375356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.375356][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.375356][ T72] netlink_unicast+0x449/0x710 [ 3258.375356][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.375356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.375356][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.375356][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.375356][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.375356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.375356][ T72] [ 3258.377344][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3258.377344][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.377344][ T72] ipv6_find_idev+0x102/0x170 [ 3258.377344][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.377344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.377344][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.377344][ T72] netlink_unicast+0x449/0x710 [ 3258.377344][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.377344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.377344][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.377344][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.377344][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.377344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.377344][ T72] [ 3258.378863][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3258.378863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.378863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.378863][ T72] ipv6_find_idev+0x102/0x170 [ 3258.378863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.378863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.378863][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.378863][ T72] netlink_unicast+0x449/0x710 [ 3258.378863][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.378863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.378863][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.378863][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.378863][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.378863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.378863][ T72] [ 3258.380530][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3258.380811][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3258.380811][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.380811][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.380811][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.380811][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.380811][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.380811][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.380811][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.380811][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.380811][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.380811][ T72] netlink_unicast+0x449/0x710 [ 3258.380811][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.380811][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.380811][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.380811][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.380811][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.380811][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.380811][ T72] [ 3258.382778][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3258.382778][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.382778][ T72] ipv6_find_idev+0x102/0x170 [ 3258.382778][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.382778][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.382778][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.382778][ T72] netlink_unicast+0x449/0x710 [ 3258.382778][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.382778][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.382778][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.382778][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.382778][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.382778][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.382778][ T72] [ 3258.384289][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3258.384289][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.384289][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.384289][ T72] ipv6_find_idev+0x102/0x170 [ 3258.384289][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.384289][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.384289][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.384289][ T72] netlink_unicast+0x449/0x710 [ 3258.384289][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.384289][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.384289][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.384289][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.384289][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.384289][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.384289][ T72] [ 3258.385945][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3258.386206][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3258.386206][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.386206][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.386206][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.386206][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.386206][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.386206][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.386206][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.386206][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.386206][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.386206][ T72] netlink_unicast+0x449/0x710 [ 3258.386206][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.386206][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.386206][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.386206][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.386206][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.386206][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.386206][ T72] [ 3258.388172][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3258.388172][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.388172][ T72] ipv6_find_idev+0x102/0x170 [ 3258.388172][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.388172][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.388172][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.388172][ T72] netlink_unicast+0x449/0x710 [ 3258.388172][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.388172][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.388172][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.388172][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.388172][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.388172][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.388172][ T72] [ 3258.389685][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3258.389685][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.389685][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.389685][ T72] ipv6_find_idev+0x102/0x170 [ 3258.389685][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.389685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.389685][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.389685][ T72] netlink_unicast+0x449/0x710 [ 3258.389685][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.389685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.389685][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.389685][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.389685][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.389685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.389685][ T72] [ 3258.391344][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3258.391608][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3258.391608][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.391608][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.391608][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.391608][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.391608][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.391608][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.391608][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.391608][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.391608][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.391608][ T72] netlink_unicast+0x449/0x710 [ 3258.391608][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.391608][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.391608][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.391608][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.391608][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.391608][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.391608][ T72] [ 3258.393603][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3258.393603][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.393603][ T72] ipv6_find_idev+0x102/0x170 [ 3258.393603][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.393603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.393603][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.393603][ T72] netlink_unicast+0x449/0x710 [ 3258.393603][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.393603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.393603][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.393603][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.393603][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.393603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.393603][ T72] [ 3258.395122][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3258.395122][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.395122][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.395122][ T72] ipv6_find_idev+0x102/0x170 [ 3258.395122][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.395122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.395122][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.395122][ T72] netlink_unicast+0x449/0x710 [ 3258.395122][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.395122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.395122][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.395122][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.395122][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.395122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.395122][ T72] [ 3258.397594][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3258.398233][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3258.398233][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.398233][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.398233][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.398233][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.398233][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.398233][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.398233][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.398233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.398233][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.398233][ T72] netlink_unicast+0x449/0x710 [ 3258.398233][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.398233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.398233][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.398233][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.398233][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.398233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.398233][ T72] [ 3258.400193][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3258.400193][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.400193][ T72] ipv6_find_idev+0x102/0x170 [ 3258.400193][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.400193][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.400193][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.400193][ T72] netlink_unicast+0x449/0x710 [ 3258.400193][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.400193][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.400193][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.400193][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.400193][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.400193][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.400193][ T72] [ 3258.401709][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3258.401709][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.401709][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.401709][ T72] ipv6_find_idev+0x102/0x170 [ 3258.401709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.401709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.401709][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.401709][ T72] netlink_unicast+0x449/0x710 [ 3258.401709][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.401709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.401709][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.401709][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.401709][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.401709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.401709][ T72] [ 3258.403360][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3258.403626][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3258.403626][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.403626][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.403626][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.403626][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.403626][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.403626][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.403626][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.403626][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.403626][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.403626][ T72] netlink_unicast+0x449/0x710 [ 3258.403626][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.403626][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.403626][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.403626][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.403626][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.403626][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.403626][ T72] [ 3258.405600][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3258.405600][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.405600][ T72] ipv6_find_idev+0x102/0x170 [ 3258.405600][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.405600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.405600][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.405600][ T72] netlink_unicast+0x449/0x710 [ 3258.405600][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.405600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.405600][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.405600][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.405600][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.405600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.405600][ T72] [ 3258.407197][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3258.407197][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.407197][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.407197][ T72] ipv6_find_idev+0x102/0x170 [ 3258.407197][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.407197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.407197][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.407197][ T72] netlink_unicast+0x449/0x710 [ 3258.407197][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.407197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.407197][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.407197][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.407197][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.407197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.407197][ T72] [ 3258.409147][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3258.409408][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3258.409408][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.409408][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.409408][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.409408][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.409408][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.409408][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.409408][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.409408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.409408][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.409408][ T72] netlink_unicast+0x449/0x710 [ 3258.409408][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.409408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.409408][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.409408][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.409408][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.409408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.409408][ T72] [ 3258.411554][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3258.411554][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.411554][ T72] ipv6_find_idev+0x102/0x170 [ 3258.411554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.411554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.411554][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.411554][ T72] netlink_unicast+0x449/0x710 [ 3258.411554][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.411554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.411554][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.411554][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.411554][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.411554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.411554][ T72] [ 3258.413253][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3258.413253][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.413253][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.413253][ T72] ipv6_find_idev+0x102/0x170 [ 3258.413253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.413253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.413253][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.413253][ T72] netlink_unicast+0x449/0x710 [ 3258.413253][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.413253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.413253][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.413253][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.413253][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.413253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.413253][ T72] [ 3258.415137][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3258.415442][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3258.415442][ T72] netdev_get_by_index+0x5e/0x80 [ 3258.415442][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3258.415442][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3258.415442][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3258.415442][ T72] ipv6_add_addr+0x411/0x2000 [ 3258.415442][ T72] inet6_addr_add+0x30e/0xa40 [ 3258.415442][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3258.415442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.415442][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.415442][ T72] netlink_unicast+0x449/0x710 [ 3258.415442][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.415442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.415442][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.415442][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.415442][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.415442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.415442][ T72] [ 3258.418129][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3258.418129][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3258.418129][ T72] ipv6_find_idev+0x102/0x170 [ 3258.418129][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.418129][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.418129][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.418129][ T72] netlink_unicast+0x449/0x710 [ 3258.418129][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.418129][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.418129][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.418129][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.418129][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.418129][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.418129][ T72] [ 3258.419889][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3258.419889][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3258.419889][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3258.419889][ T72] ipv6_find_idev+0x102/0x170 [ 3258.419889][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3258.419889][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3258.419889][ T72] netlink_rcv_skb+0x130/0x360 [ 3258.419889][ T72] netlink_unicast+0x449/0x710 [ 3258.419889][ T72] netlink_sendmsg+0x723/0xbe0 [ 3258.419889][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3258.419889][ T72] ___sys_sendmsg+0xee/0x170 [ 3258.419889][ T72] __sys_sendmsg+0xcd/0x170 [ 3258.419889][ T72] do_syscall_64+0xc6/0x1e0 [ 3258.419889][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3258.419889][ T72] [ 3268.638935][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3268.639403][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3268.639403][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.639403][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.639403][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.639403][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.639403][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.639403][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.639403][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.639403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.639403][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.639403][ T72] netlink_unicast+0x449/0x710 [ 3268.639403][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.639403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.639403][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.639403][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.639403][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.639403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.639403][ T72] [ 3268.641794][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3268.641794][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.641794][ T72] ipv6_find_idev+0x102/0x170 [ 3268.641794][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.641794][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.641794][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.641794][ T72] netlink_unicast+0x449/0x710 [ 3268.641794][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.641794][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.641794][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.641794][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.641794][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.641794][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.641794][ T72] [ 3268.643321][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3268.643321][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.643321][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.643321][ T72] ipv6_find_idev+0x102/0x170 [ 3268.643321][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.643321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.643321][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.643321][ T72] netlink_unicast+0x449/0x710 [ 3268.643321][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.643321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.643321][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.643321][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.643321][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.643321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.643321][ T72] [ 3268.645000][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3268.645271][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3268.645271][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.645271][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.645271][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.645271][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.645271][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.645271][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.645271][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.645271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.645271][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.645271][ T72] netlink_unicast+0x449/0x710 [ 3268.645271][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.645271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.645271][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.645271][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.645271][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.645271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.645271][ T72] [ 3268.647254][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3268.647254][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.647254][ T72] ipv6_find_idev+0x102/0x170 [ 3268.647254][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.647254][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.647254][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.647254][ T72] netlink_unicast+0x449/0x710 [ 3268.647254][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.647254][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.647254][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.647254][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.647254][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.647254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.647254][ T72] [ 3268.648773][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3268.648773][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.648773][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.648773][ T72] ipv6_find_idev+0x102/0x170 [ 3268.648773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.648773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.648773][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.648773][ T72] netlink_unicast+0x449/0x710 [ 3268.648773][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.648773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.648773][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.648773][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.648773][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.648773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.648773][ T72] [ 3268.650440][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3268.650705][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3268.650705][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.650705][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.650705][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.650705][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.650705][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.650705][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.650705][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.650705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.650705][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.650705][ T72] netlink_unicast+0x449/0x710 [ 3268.650705][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.650705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.650705][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.650705][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.650705][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.650705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.650705][ T72] [ 3268.652694][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3268.652694][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.652694][ T72] ipv6_find_idev+0x102/0x170 [ 3268.652694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.652694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.652694][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.652694][ T72] netlink_unicast+0x449/0x710 [ 3268.652694][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.652694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.652694][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.652694][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.652694][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.652694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.652694][ T72] [ 3268.654218][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3268.654218][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.654218][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.654218][ T72] ipv6_find_idev+0x102/0x170 [ 3268.654218][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.654218][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.654218][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.654218][ T72] netlink_unicast+0x449/0x710 [ 3268.654218][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.654218][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.654218][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.654218][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.654218][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.654218][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.654218][ T72] [ 3268.655903][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3268.656164][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3268.656164][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.656164][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.656164][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.656164][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.656164][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.656164][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.656164][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.656164][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.656164][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.656164][ T72] netlink_unicast+0x449/0x710 [ 3268.656164][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.656164][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.656164][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.656164][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.656164][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.656164][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.656164][ T72] [ 3268.658144][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3268.658144][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.658144][ T72] ipv6_find_idev+0x102/0x170 [ 3268.658144][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.658144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.658144][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.658144][ T72] netlink_unicast+0x449/0x710 [ 3268.658144][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.658144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.658144][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.658144][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.658144][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.658144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.658144][ T72] [ 3268.659673][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3268.659673][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.659673][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.659673][ T72] ipv6_find_idev+0x102/0x170 [ 3268.659673][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.659673][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.659673][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.659673][ T72] netlink_unicast+0x449/0x710 [ 3268.659673][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.659673][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.659673][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.659673][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.659673][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.659673][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.659673][ T72] [ 3268.661782][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3268.662110][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3268.662110][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.662110][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.662110][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.662110][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.662110][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.662110][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.662110][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.662110][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.662110][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.662110][ T72] netlink_unicast+0x449/0x710 [ 3268.662110][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.662110][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.662110][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.662110][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.662110][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.662110][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.662110][ T72] [ 3268.664104][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3268.664104][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.664104][ T72] ipv6_find_idev+0x102/0x170 [ 3268.664104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.664104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.664104][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.664104][ T72] netlink_unicast+0x449/0x710 [ 3268.664104][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.664104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.664104][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.664104][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.664104][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.664104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.664104][ T72] [ 3268.665645][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3268.665645][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.665645][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.665645][ T72] ipv6_find_idev+0x102/0x170 [ 3268.665645][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.665645][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.665645][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.665645][ T72] netlink_unicast+0x449/0x710 [ 3268.665645][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.665645][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.665645][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.665645][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.665645][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.665645][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.665645][ T72] [ 3268.667377][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3268.667647][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3268.667647][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.667647][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.667647][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.667647][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.667647][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.667647][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.667647][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.667647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.667647][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.667647][ T72] netlink_unicast+0x449/0x710 [ 3268.667647][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.667647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.667647][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.667647][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.667647][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.667647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.667647][ T72] [ 3268.669747][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3268.669747][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.669747][ T72] ipv6_find_idev+0x102/0x170 [ 3268.669747][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.669747][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.669747][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.669747][ T72] netlink_unicast+0x449/0x710 [ 3268.669747][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.669747][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.669747][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.669747][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.669747][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.669747][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.669747][ T72] [ 3268.671459][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3268.671459][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.671459][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.671459][ T72] ipv6_find_idev+0x102/0x170 [ 3268.671459][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.671459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.671459][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.671459][ T72] netlink_unicast+0x449/0x710 [ 3268.671459][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.671459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.671459][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.671459][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.671459][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.671459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.671459][ T72] [ 3268.673358][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3268.673622][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3268.673622][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.673622][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.673622][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.673622][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.673622][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.673622][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.673622][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.673622][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.673622][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.673622][ T72] netlink_unicast+0x449/0x710 [ 3268.673622][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.673622][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.673622][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.673622][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.673622][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.673622][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.673622][ T72] [ 3268.675774][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3268.675774][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.675774][ T72] ipv6_find_idev+0x102/0x170 [ 3268.675774][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.675774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.675774][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.675774][ T72] netlink_unicast+0x449/0x710 [ 3268.675774][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.675774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.675774][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.675774][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.675774][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.675774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.675774][ T72] [ 3268.677482][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3268.677482][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.677482][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.677482][ T72] ipv6_find_idev+0x102/0x170 [ 3268.677482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.677482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.677482][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.677482][ T72] netlink_unicast+0x449/0x710 [ 3268.677482][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.677482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.677482][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.677482][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.677482][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.677482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.677482][ T72] [ 3268.679380][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3268.679650][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3268.679650][ T72] netdev_get_by_index+0x5e/0x80 [ 3268.679650][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3268.679650][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3268.679650][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3268.679650][ T72] ipv6_add_addr+0x411/0x2000 [ 3268.679650][ T72] inet6_addr_add+0x30e/0xa40 [ 3268.679650][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3268.679650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.679650][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.679650][ T72] netlink_unicast+0x449/0x710 [ 3268.679650][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.679650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.679650][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.679650][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.679650][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.679650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.679650][ T72] [ 3268.681878][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3268.681878][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3268.681878][ T72] ipv6_find_idev+0x102/0x170 [ 3268.681878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.681878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.681878][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.681878][ T72] netlink_unicast+0x449/0x710 [ 3268.681878][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.681878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.681878][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.681878][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.681878][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.681878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.681878][ T72] [ 3268.683662][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3268.683662][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3268.683662][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3268.683662][ T72] ipv6_find_idev+0x102/0x170 [ 3268.683662][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3268.683662][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3268.683662][ T72] netlink_rcv_skb+0x130/0x360 [ 3268.683662][ T72] netlink_unicast+0x449/0x710 [ 3268.683662][ T72] netlink_sendmsg+0x723/0xbe0 [ 3268.683662][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3268.683662][ T72] ___sys_sendmsg+0xee/0x170 [ 3268.683662][ T72] __sys_sendmsg+0xcd/0x170 [ 3268.683662][ T72] do_syscall_64+0xc6/0x1e0 [ 3268.683662][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3268.683662][ T72] [ 3278.750828][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3278.751344][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3278.751344][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.751344][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.751344][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.751344][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.751344][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.751344][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.751344][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.751344][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.751344][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.751344][ T72] netlink_unicast+0x449/0x710 [ 3278.751344][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.751344][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.751344][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.751344][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.751344][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.751344][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.751344][ T72] [ 3278.753426][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3278.753426][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.753426][ T72] ipv6_find_idev+0x102/0x170 [ 3278.753426][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.753426][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.753426][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.753426][ T72] netlink_unicast+0x449/0x710 [ 3278.753426][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.753426][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.753426][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.753426][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.753426][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.753426][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.753426][ T72] [ 3278.755056][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3278.755056][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.755056][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.755056][ T72] ipv6_find_idev+0x102/0x170 [ 3278.755056][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.755056][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.755056][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.755056][ T72] netlink_unicast+0x449/0x710 [ 3278.755056][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.755056][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.755056][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.755056][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.755056][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.755056][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.755056][ T72] [ 3278.756824][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3278.757108][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3278.757108][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.757108][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.757108][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.757108][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.757108][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.757108][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.757108][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.757108][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.757108][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.757108][ T72] netlink_unicast+0x449/0x710 [ 3278.757108][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.757108][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.757108][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.757108][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.757108][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.757108][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.757108][ T72] [ 3278.759152][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3278.759152][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.759152][ T72] ipv6_find_idev+0x102/0x170 [ 3278.759152][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.759152][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.759152][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.759152][ T72] netlink_unicast+0x449/0x710 [ 3278.759152][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.759152][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.759152][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.759152][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.759152][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.759152][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.759152][ T72] [ 3278.760753][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3278.760753][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.760753][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.760753][ T72] ipv6_find_idev+0x102/0x170 [ 3278.760753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.760753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.760753][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.760753][ T72] netlink_unicast+0x449/0x710 [ 3278.760753][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.760753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.760753][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.760753][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.760753][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.760753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.760753][ T72] [ 3278.762639][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3278.762932][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3278.762932][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.762932][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.762932][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.762932][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.762932][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.762932][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.762932][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.762932][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.762932][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.762932][ T72] netlink_unicast+0x449/0x710 [ 3278.762932][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.762932][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.762932][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.762932][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.762932][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.762932][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.762932][ T72] [ 3278.764961][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3278.764961][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.764961][ T72] ipv6_find_idev+0x102/0x170 [ 3278.764961][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.764961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.764961][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.764961][ T72] netlink_unicast+0x449/0x710 [ 3278.764961][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.764961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.764961][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.764961][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.764961][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.764961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.764961][ T72] [ 3278.766569][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3278.766569][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.766569][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.766569][ T72] ipv6_find_idev+0x102/0x170 [ 3278.766569][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.766569][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.766569][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.766569][ T72] netlink_unicast+0x449/0x710 [ 3278.766569][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.766569][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.766569][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.766569][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.766569][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.766569][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.766569][ T72] [ 3278.768288][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3278.768564][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3278.768564][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.768564][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.768564][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.768564][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.768564][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.768564][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.768564][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.768564][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.768564][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.768564][ T72] netlink_unicast+0x449/0x710 [ 3278.768564][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.768564][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.768564][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.768564][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.768564][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.768564][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.768564][ T72] [ 3278.770630][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3278.770630][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.770630][ T72] ipv6_find_idev+0x102/0x170 [ 3278.770630][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.770630][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.770630][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.770630][ T72] netlink_unicast+0x449/0x710 [ 3278.770630][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.770630][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.770630][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.770630][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.770630][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.770630][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.770630][ T72] [ 3278.772179][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3278.772179][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.772179][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.772179][ T72] ipv6_find_idev+0x102/0x170 [ 3278.772179][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.772179][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.772179][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.772179][ T72] netlink_unicast+0x449/0x710 [ 3278.772179][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.772179][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.772179][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.772179][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.772179][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.772179][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.772179][ T72] [ 3278.774245][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3278.774902][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3278.774902][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.774902][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.774902][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.774902][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.774902][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.774902][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.774902][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.774902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.774902][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.774902][ T72] netlink_unicast+0x449/0x710 [ 3278.774902][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.774902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.774902][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.774902][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.774902][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.774902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.774902][ T72] [ 3278.776928][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3278.776928][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.776928][ T72] ipv6_find_idev+0x102/0x170 [ 3278.776928][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.776928][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.776928][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.776928][ T72] netlink_unicast+0x449/0x710 [ 3278.776928][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.776928][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.776928][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.776928][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.776928][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.776928][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.776928][ T72] [ 3278.778526][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3278.778526][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.778526][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.778526][ T72] ipv6_find_idev+0x102/0x170 [ 3278.778526][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.778526][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.778526][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.778526][ T72] netlink_unicast+0x449/0x710 [ 3278.778526][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.778526][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.778526][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.778526][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.778526][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.778526][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.778526][ T72] [ 3278.780272][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3278.780552][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3278.780552][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.780552][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.780552][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.780552][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.780552][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.780552][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.780552][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.780552][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.780552][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.780552][ T72] netlink_unicast+0x449/0x710 [ 3278.780552][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.780552][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.780552][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.780552][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.780552][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.780552][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.780552][ T72] [ 3278.782765][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3278.782765][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.782765][ T72] ipv6_find_idev+0x102/0x170 [ 3278.782765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.782765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.782765][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.782765][ T72] netlink_unicast+0x449/0x710 [ 3278.782765][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.782765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.782765][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.782765][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.782765][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.782765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.782765][ T72] [ 3278.784503][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3278.784503][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.784503][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.784503][ T72] ipv6_find_idev+0x102/0x170 [ 3278.784503][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.784503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.784503][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.784503][ T72] netlink_unicast+0x449/0x710 [ 3278.784503][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.784503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.784503][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.784503][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.784503][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.784503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.784503][ T72] [ 3278.786492][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3278.786769][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3278.786769][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.786769][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.786769][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.786769][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.786769][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.786769][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.786769][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.786769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.786769][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.786769][ T72] netlink_unicast+0x449/0x710 [ 3278.786769][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.786769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.786769][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.786769][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.786769][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.786769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.786769][ T72] [ 3278.789045][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3278.789045][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.789045][ T72] ipv6_find_idev+0x102/0x170 [ 3278.789045][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.789045][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.789045][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.789045][ T72] netlink_unicast+0x449/0x710 [ 3278.789045][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.789045][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.789045][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.789045][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.789045][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.789045][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.789045][ T72] [ 3278.790748][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3278.790748][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.790748][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.790748][ T72] ipv6_find_idev+0x102/0x170 [ 3278.790748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.790748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.790748][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.790748][ T72] netlink_unicast+0x449/0x710 [ 3278.790748][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.790748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.790748][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.790748][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.790748][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.790748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.790748][ T72] [ 3278.792587][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3278.792921][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3278.792921][ T72] netdev_get_by_index+0x5e/0x80 [ 3278.792921][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3278.792921][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3278.792921][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3278.792921][ T72] ipv6_add_addr+0x411/0x2000 [ 3278.792921][ T72] inet6_addr_add+0x30e/0xa40 [ 3278.792921][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3278.792921][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.792921][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.792921][ T72] netlink_unicast+0x449/0x710 [ 3278.792921][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.792921][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.792921][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.792921][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.792921][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.792921][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.792921][ T72] [ 3278.795173][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3278.795173][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3278.795173][ T72] ipv6_find_idev+0x102/0x170 [ 3278.795173][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.795173][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.795173][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.795173][ T72] netlink_unicast+0x449/0x710 [ 3278.795173][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.795173][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.795173][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.795173][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.795173][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.795173][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.795173][ T72] [ 3278.796902][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3278.796902][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3278.796902][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3278.796902][ T72] ipv6_find_idev+0x102/0x170 [ 3278.796902][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3278.796902][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3278.796902][ T72] netlink_rcv_skb+0x130/0x360 [ 3278.796902][ T72] netlink_unicast+0x449/0x710 [ 3278.796902][ T72] netlink_sendmsg+0x723/0xbe0 [ 3278.796902][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3278.796902][ T72] ___sys_sendmsg+0xee/0x170 [ 3278.796902][ T72] __sys_sendmsg+0xcd/0x170 [ 3278.796902][ T72] do_syscall_64+0xc6/0x1e0 [ 3278.796902][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3278.796902][ T72] [ 3288.910896][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3288.911366][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3288.911366][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.911366][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.911366][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.911366][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.911366][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.911366][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.911366][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.911366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.911366][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.911366][ T72] netlink_unicast+0x449/0x710 [ 3288.911366][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.911366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.911366][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.911366][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.911366][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.911366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.911366][ T72] [ 3288.913374][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3288.913374][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.913374][ T72] ipv6_find_idev+0x102/0x170 [ 3288.913374][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.913374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.913374][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.913374][ T72] netlink_unicast+0x449/0x710 [ 3288.913374][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.913374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.913374][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.913374][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.913374][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.913374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.913374][ T72] [ 3288.914894][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3288.914894][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.914894][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.914894][ T72] ipv6_find_idev+0x102/0x170 [ 3288.914894][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.914894][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.914894][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.914894][ T72] netlink_unicast+0x449/0x710 [ 3288.914894][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.914894][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.914894][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.914894][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.914894][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.914894][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.914894][ T72] [ 3288.916945][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3288.917222][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3288.917222][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.917222][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.917222][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.917222][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.917222][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.917222][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.917222][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.917222][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.917222][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.917222][ T72] netlink_unicast+0x449/0x710 [ 3288.917222][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.917222][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.917222][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.917222][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.917222][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.917222][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.917222][ T72] [ 3288.919178][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3288.919178][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.919178][ T72] ipv6_find_idev+0x102/0x170 [ 3288.919178][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.919178][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.919178][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.919178][ T72] netlink_unicast+0x449/0x710 [ 3288.919178][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.919178][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.919178][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.919178][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.919178][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.919178][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.919178][ T72] [ 3288.920695][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3288.920695][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.920695][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.920695][ T72] ipv6_find_idev+0x102/0x170 [ 3288.920695][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.920695][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.920695][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.920695][ T72] netlink_unicast+0x449/0x710 [ 3288.920695][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.920695][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.920695][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.920695][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.920695][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.920695][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.920695][ T72] [ 3288.922333][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3288.922589][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3288.922589][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.922589][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.922589][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.922589][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.922589][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.922589][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.922589][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.922589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.922589][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.922589][ T72] netlink_unicast+0x449/0x710 [ 3288.922589][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.922589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.922589][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.922589][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.922589][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.922589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.922589][ T72] [ 3288.924551][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3288.924551][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.924551][ T72] ipv6_find_idev+0x102/0x170 [ 3288.924551][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.924551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.924551][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.924551][ T72] netlink_unicast+0x449/0x710 [ 3288.924551][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.924551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.924551][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.924551][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.924551][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.924551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.924551][ T72] [ 3288.926063][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3288.926063][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.926063][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.926063][ T72] ipv6_find_idev+0x102/0x170 [ 3288.926063][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.926063][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.926063][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.926063][ T72] netlink_unicast+0x449/0x710 [ 3288.926063][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.926063][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.926063][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.926063][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.926063][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.926063][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.926063][ T72] [ 3288.927706][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3288.928400][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3288.928400][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.928400][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.928400][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.928400][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.928400][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.928400][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.928400][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.928400][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.928400][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.928400][ T72] netlink_unicast+0x449/0x710 [ 3288.928400][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.928400][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.928400][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.928400][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.928400][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.928400][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.928400][ T72] [ 3288.930354][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3288.930354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.930354][ T72] ipv6_find_idev+0x102/0x170 [ 3288.930354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.930354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.930354][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.930354][ T72] netlink_unicast+0x449/0x710 [ 3288.930354][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.930354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.930354][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.930354][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.930354][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.930354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.930354][ T72] [ 3288.931856][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3288.931856][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.931856][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.931856][ T72] ipv6_find_idev+0x102/0x170 [ 3288.931856][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.931856][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.931856][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.931856][ T72] netlink_unicast+0x449/0x710 [ 3288.931856][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.931856][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.931856][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.931856][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.931856][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.931856][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.931856][ T72] [ 3288.933538][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3288.933847][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3288.933847][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.933847][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.933847][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.933847][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.933847][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.933847][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.933847][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.933847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.933847][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.933847][ T72] netlink_unicast+0x449/0x710 [ 3288.933847][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.933847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.933847][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.933847][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.933847][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.933847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.933847][ T72] [ 3288.935809][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3288.935809][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.935809][ T72] ipv6_find_idev+0x102/0x170 [ 3288.935809][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.935809][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.935809][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.935809][ T72] netlink_unicast+0x449/0x710 [ 3288.935809][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.935809][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.935809][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.935809][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.935809][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.935809][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.935809][ T72] [ 3288.937320][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3288.937320][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.937320][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.937320][ T72] ipv6_find_idev+0x102/0x170 [ 3288.937320][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.937320][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.937320][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.937320][ T72] netlink_unicast+0x449/0x710 [ 3288.937320][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.937320][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.937320][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.937320][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.937320][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.937320][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.937320][ T72] [ 3288.939016][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3288.939278][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3288.939278][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.939278][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.939278][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.939278][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.939278][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.939278][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.939278][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.939278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.939278][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.939278][ T72] netlink_unicast+0x449/0x710 [ 3288.939278][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.939278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.939278][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.939278][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.939278][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.939278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.939278][ T72] [ 3288.941306][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3288.941306][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.941306][ T72] ipv6_find_idev+0x102/0x170 [ 3288.941306][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.941306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.941306][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.941306][ T72] netlink_unicast+0x449/0x710 [ 3288.941306][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.941306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.941306][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.941306][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.941306][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.941306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.941306][ T72] [ 3288.942936][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3288.942936][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.942936][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.942936][ T72] ipv6_find_idev+0x102/0x170 [ 3288.942936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.942936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.942936][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.942936][ T72] netlink_unicast+0x449/0x710 [ 3288.942936][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.942936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.942936][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.942936][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.942936][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.942936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.942936][ T72] [ 3288.944857][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3288.945118][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3288.945118][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.945118][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.945118][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.945118][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.945118][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.945118][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.945118][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.945118][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.945118][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.945118][ T72] netlink_unicast+0x449/0x710 [ 3288.945118][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.945118][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.945118][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.945118][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.945118][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.945118][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.945118][ T72] [ 3288.947319][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3288.947319][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.947319][ T72] ipv6_find_idev+0x102/0x170 [ 3288.947319][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.947319][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.947319][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.947319][ T72] netlink_unicast+0x449/0x710 [ 3288.947319][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.947319][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.947319][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.947319][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.947319][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.947319][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.947319][ T72] [ 3288.948949][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3288.948949][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.948949][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.948949][ T72] ipv6_find_idev+0x102/0x170 [ 3288.948949][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.948949][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.948949][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.948949][ T72] netlink_unicast+0x449/0x710 [ 3288.948949][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.948949][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.948949][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.948949][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.948949][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.948949][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.948949][ T72] [ 3288.950873][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3288.951182][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3288.951182][ T72] netdev_get_by_index+0x5e/0x80 [ 3288.951182][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3288.951182][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3288.951182][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3288.951182][ T72] ipv6_add_addr+0x411/0x2000 [ 3288.951182][ T72] inet6_addr_add+0x30e/0xa40 [ 3288.951182][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3288.951182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.951182][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.951182][ T72] netlink_unicast+0x449/0x710 [ 3288.951182][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.951182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.951182][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.951182][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.951182][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.951182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.951182][ T72] [ 3288.953324][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3288.953324][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3288.953324][ T72] ipv6_find_idev+0x102/0x170 [ 3288.953324][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.953324][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.953324][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.953324][ T72] netlink_unicast+0x449/0x710 [ 3288.953324][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.953324][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.953324][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.953324][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.953324][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.953324][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.953324][ T72] [ 3288.955076][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3288.955076][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3288.955076][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3288.955076][ T72] ipv6_find_idev+0x102/0x170 [ 3288.955076][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3288.955076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3288.955076][ T72] netlink_rcv_skb+0x130/0x360 [ 3288.955076][ T72] netlink_unicast+0x449/0x710 [ 3288.955076][ T72] netlink_sendmsg+0x723/0xbe0 [ 3288.955076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3288.955076][ T72] ___sys_sendmsg+0xee/0x170 [ 3288.955076][ T72] __sys_sendmsg+0xcd/0x170 [ 3288.955076][ T72] do_syscall_64+0xc6/0x1e0 [ 3288.955076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3288.955076][ T72] [ 3299.086944][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3299.087365][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3299.087365][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.087365][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.087365][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.087365][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.087365][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.087365][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.087365][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.087365][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.087365][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.087365][ T72] netlink_unicast+0x449/0x710 [ 3299.087365][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.087365][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.087365][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.087365][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.087365][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.087365][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.087365][ T72] [ 3299.089448][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3299.089448][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.089448][ T72] ipv6_find_idev+0x102/0x170 [ 3299.089448][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.089448][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.089448][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.089448][ T72] netlink_unicast+0x449/0x710 [ 3299.089448][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.089448][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.089448][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.089448][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.089448][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.089448][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.089448][ T72] [ 3299.090966][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3299.090966][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.090966][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.090966][ T72] ipv6_find_idev+0x102/0x170 [ 3299.090966][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.090966][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.090966][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.090966][ T72] netlink_unicast+0x449/0x710 [ 3299.090966][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.090966][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.090966][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.090966][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.090966][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.090966][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.090966][ T72] [ 3299.093172][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3299.093445][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3299.093445][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.093445][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.093445][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.093445][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.093445][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.093445][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.093445][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.093445][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.093445][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.093445][ T72] netlink_unicast+0x449/0x710 [ 3299.093445][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.093445][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.093445][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.093445][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.093445][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.093445][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.093445][ T72] [ 3299.095405][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3299.095405][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.095405][ T72] ipv6_find_idev+0x102/0x170 [ 3299.095405][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.095405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.095405][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.095405][ T72] netlink_unicast+0x449/0x710 [ 3299.095405][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.095405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.095405][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.095405][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.095405][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.095405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.095405][ T72] [ 3299.096926][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3299.096926][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.096926][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.096926][ T72] ipv6_find_idev+0x102/0x170 [ 3299.096926][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.096926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.096926][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.096926][ T72] netlink_unicast+0x449/0x710 [ 3299.096926][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.096926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.096926][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.096926][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.096926][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.096926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.096926][ T72] [ 3299.098585][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3299.098853][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3299.098853][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.098853][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.098853][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.098853][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.098853][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.098853][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.098853][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.098853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.098853][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.098853][ T72] netlink_unicast+0x449/0x710 [ 3299.098853][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.098853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.098853][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.098853][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.098853][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.098853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.098853][ T72] [ 3299.100816][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3299.100816][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.100816][ T72] ipv6_find_idev+0x102/0x170 [ 3299.100816][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.100816][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.100816][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.100816][ T72] netlink_unicast+0x449/0x710 [ 3299.100816][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.100816][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.100816][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.100816][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.100816][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.100816][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.100816][ T72] [ 3299.102716][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3299.102716][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.102716][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.102716][ T72] ipv6_find_idev+0x102/0x170 [ 3299.102716][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.102716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.102716][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.102716][ T72] netlink_unicast+0x449/0x710 [ 3299.102716][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.102716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.102716][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.102716][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.102716][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.102716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.102716][ T72] [ 3299.104361][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3299.104623][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3299.104623][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.104623][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.104623][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.104623][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.104623][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.104623][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.104623][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.104623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.104623][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.104623][ T72] netlink_unicast+0x449/0x710 [ 3299.104623][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.104623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.104623][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.104623][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.104623][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.104623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.104623][ T72] [ 3299.106596][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3299.106596][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.106596][ T72] ipv6_find_idev+0x102/0x170 [ 3299.106596][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.106596][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.106596][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.106596][ T72] netlink_unicast+0x449/0x710 [ 3299.106596][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.106596][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.106596][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.106596][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.106596][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.106596][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.106596][ T72] [ 3299.108101][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3299.108101][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.108101][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.108101][ T72] ipv6_find_idev+0x102/0x170 [ 3299.108101][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.108101][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.108101][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.108101][ T72] netlink_unicast+0x449/0x710 [ 3299.108101][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.108101][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.108101][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.108101][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.108101][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.108101][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.108101][ T72] [ 3299.110148][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3299.110405][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3299.110405][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.110405][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.110405][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.110405][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.110405][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.110405][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.110405][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.110405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.110405][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.110405][ T72] netlink_unicast+0x449/0x710 [ 3299.110405][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.110405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.110405][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.110405][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.110405][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.110405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.110405][ T72] [ 3299.112371][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3299.112371][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.112371][ T72] ipv6_find_idev+0x102/0x170 [ 3299.112371][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.112371][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.112371][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.112371][ T72] netlink_unicast+0x449/0x710 [ 3299.112371][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.112371][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.112371][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.112371][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.112371][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.112371][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.112371][ T72] [ 3299.113882][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3299.113882][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.113882][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.113882][ T72] ipv6_find_idev+0x102/0x170 [ 3299.113882][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.113882][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.113882][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.113882][ T72] netlink_unicast+0x449/0x710 [ 3299.113882][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.113882][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.113882][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.113882][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.113882][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.113882][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.113882][ T72] [ 3299.115565][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3299.115891][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3299.115891][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.115891][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.115891][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.115891][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.115891][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.115891][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.115891][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.115891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.115891][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.115891][ T72] netlink_unicast+0x449/0x710 [ 3299.115891][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.115891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.115891][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.115891][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.115891][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.115891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.115891][ T72] [ 3299.117965][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3299.117965][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.117965][ T72] ipv6_find_idev+0x102/0x170 [ 3299.117965][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.117965][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.117965][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.117965][ T72] netlink_unicast+0x449/0x710 [ 3299.117965][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.117965][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.117965][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.117965][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.117965][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.117965][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.117965][ T72] [ 3299.119713][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3299.119713][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.119713][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.119713][ T72] ipv6_find_idev+0x102/0x170 [ 3299.119713][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.119713][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.119713][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.119713][ T72] netlink_unicast+0x449/0x710 [ 3299.119713][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.119713][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.119713][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.119713][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.119713][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.119713][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.119713][ T72] [ 3299.121573][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3299.121887][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3299.121887][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.121887][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.121887][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.121887][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.121887][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.121887][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.121887][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.121887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.121887][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.121887][ T72] netlink_unicast+0x449/0x710 [ 3299.121887][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.121887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.121887][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.121887][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.121887][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.121887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.121887][ T72] [ 3299.124033][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3299.124033][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.124033][ T72] ipv6_find_idev+0x102/0x170 [ 3299.124033][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.124033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.124033][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.124033][ T72] netlink_unicast+0x449/0x710 [ 3299.124033][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.124033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.124033][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.124033][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.124033][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.124033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.124033][ T72] [ 3299.125669][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3299.125669][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.125669][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.125669][ T72] ipv6_find_idev+0x102/0x170 [ 3299.125669][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.125669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.125669][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.125669][ T72] netlink_unicast+0x449/0x710 [ 3299.125669][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.125669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.125669][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.125669][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.125669][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.125669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.125669][ T72] [ 3299.127541][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3299.127861][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3299.127861][ T72] netdev_get_by_index+0x5e/0x80 [ 3299.127861][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3299.127861][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3299.127861][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3299.127861][ T72] ipv6_add_addr+0x411/0x2000 [ 3299.127861][ T72] inet6_addr_add+0x30e/0xa40 [ 3299.127861][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3299.127861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.127861][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.127861][ T72] netlink_unicast+0x449/0x710 [ 3299.127861][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.127861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.127861][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.127861][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.127861][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.127861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.127861][ T72] [ 3299.130064][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3299.130064][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3299.130064][ T72] ipv6_find_idev+0x102/0x170 [ 3299.130064][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.130064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.130064][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.130064][ T72] netlink_unicast+0x449/0x710 [ 3299.130064][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.130064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.130064][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.130064][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.130064][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.130064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.130064][ T72] [ 3299.131755][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3299.131755][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3299.131755][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3299.131755][ T72] ipv6_find_idev+0x102/0x170 [ 3299.131755][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3299.131755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3299.131755][ T72] netlink_rcv_skb+0x130/0x360 [ 3299.131755][ T72] netlink_unicast+0x449/0x710 [ 3299.131755][ T72] netlink_sendmsg+0x723/0xbe0 [ 3299.131755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3299.131755][ T72] ___sys_sendmsg+0xee/0x170 [ 3299.131755][ T72] __sys_sendmsg+0xcd/0x170 [ 3299.131755][ T72] do_syscall_64+0xc6/0x1e0 [ 3299.131755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3299.131755][ T72] [ 3309.198876][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3309.199274][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3309.199274][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.199274][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.199274][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.199274][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.199274][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.199274][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.199274][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.199274][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.199274][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.199274][ T72] netlink_unicast+0x449/0x710 [ 3309.199274][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.199274][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.199274][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.199274][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.199274][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.199274][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.199274][ T72] [ 3309.201368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3309.201368][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.201368][ T72] ipv6_find_idev+0x102/0x170 [ 3309.201368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.201368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.201368][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.201368][ T72] netlink_unicast+0x449/0x710 [ 3309.201368][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.201368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.201368][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.201368][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.201368][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.201368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.201368][ T72] [ 3309.202895][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3309.202895][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.202895][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.202895][ T72] ipv6_find_idev+0x102/0x170 [ 3309.202895][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.202895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.202895][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.202895][ T72] netlink_unicast+0x449/0x710 [ 3309.202895][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.202895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.202895][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.202895][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.202895][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.202895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.202895][ T72] [ 3309.204561][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3309.204841][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3309.204841][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.204841][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.204841][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.204841][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.204841][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.204841][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.204841][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.204841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.204841][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.204841][ T72] netlink_unicast+0x449/0x710 [ 3309.204841][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.204841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.204841][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.204841][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.204841][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.204841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.204841][ T72] [ 3309.206824][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3309.206824][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.206824][ T72] ipv6_find_idev+0x102/0x170 [ 3309.206824][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.206824][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.206824][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.206824][ T72] netlink_unicast+0x449/0x710 [ 3309.206824][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.206824][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.206824][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.206824][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.206824][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.206824][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.206824][ T72] [ 3309.208343][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3309.208343][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.208343][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.208343][ T72] ipv6_find_idev+0x102/0x170 [ 3309.208343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.208343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.208343][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.208343][ T72] netlink_unicast+0x449/0x710 [ 3309.208343][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.208343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.208343][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.208343][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.208343][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.208343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.208343][ T72] [ 3309.210013][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3309.210272][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3309.210272][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.210272][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.210272][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.210272][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.210272][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.210272][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.210272][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.210272][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.210272][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.210272][ T72] netlink_unicast+0x449/0x710 [ 3309.210272][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.210272][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.210272][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.210272][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.210272][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.210272][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.210272][ T72] [ 3309.212230][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3309.212230][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.212230][ T72] ipv6_find_idev+0x102/0x170 [ 3309.212230][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.212230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.212230][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.212230][ T72] netlink_unicast+0x449/0x710 [ 3309.212230][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.212230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.212230][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.212230][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.212230][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.212230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.212230][ T72] [ 3309.213744][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3309.213744][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.213744][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.213744][ T72] ipv6_find_idev+0x102/0x170 [ 3309.213744][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.213744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.213744][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.213744][ T72] netlink_unicast+0x449/0x710 [ 3309.213744][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.213744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.213744][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.213744][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.213744][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.213744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.213744][ T72] [ 3309.215806][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3309.216069][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3309.216069][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.216069][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.216069][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.216069][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.216069][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.216069][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.216069][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.216069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.216069][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.216069][ T72] netlink_unicast+0x449/0x710 [ 3309.216069][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.216069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.216069][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.216069][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.216069][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.216069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.216069][ T72] [ 3309.218027][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3309.218027][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.218027][ T72] ipv6_find_idev+0x102/0x170 [ 3309.218027][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.218027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.218027][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.218027][ T72] netlink_unicast+0x449/0x710 [ 3309.218027][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.218027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.218027][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.218027][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.218027][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.218027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.218027][ T72] [ 3309.219529][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3309.219529][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.219529][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.219529][ T72] ipv6_find_idev+0x102/0x170 [ 3309.219529][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.219529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.219529][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.219529][ T72] netlink_unicast+0x449/0x710 [ 3309.219529][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.219529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.219529][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.219529][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.219529][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.219529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.219529][ T72] [ 3309.221236][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3309.221492][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3309.221492][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.221492][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.221492][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.221492][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.221492][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.221492][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.221492][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.221492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.221492][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.221492][ T72] netlink_unicast+0x449/0x710 [ 3309.221492][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.221492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.221492][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.221492][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.221492][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.221492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.221492][ T72] [ 3309.223470][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3309.223470][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.223470][ T72] ipv6_find_idev+0x102/0x170 [ 3309.223470][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.223470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.223470][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.223470][ T72] netlink_unicast+0x449/0x710 [ 3309.223470][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.223470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.223470][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.223470][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.223470][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.223470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.223470][ T72] [ 3309.224984][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3309.224984][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.224984][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.224984][ T72] ipv6_find_idev+0x102/0x170 [ 3309.224984][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.224984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.224984][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.224984][ T72] netlink_unicast+0x449/0x710 [ 3309.224984][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.224984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.224984][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.224984][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.224984][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.224984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.224984][ T72] [ 3309.226677][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3309.226998][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3309.226998][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.226998][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.226998][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.226998][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.226998][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.226998][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.226998][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.226998][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.226998][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.226998][ T72] netlink_unicast+0x449/0x710 [ 3309.226998][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.226998][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.226998][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.226998][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.226998][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.226998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.226998][ T72] [ 3309.229027][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3309.229027][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.229027][ T72] ipv6_find_idev+0x102/0x170 [ 3309.229027][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.229027][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.229027][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.229027][ T72] netlink_unicast+0x449/0x710 [ 3309.229027][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.229027][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.229027][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.229027][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.229027][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.229027][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.229027][ T72] [ 3309.230722][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3309.230722][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.230722][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.230722][ T72] ipv6_find_idev+0x102/0x170 [ 3309.230722][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.230722][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.230722][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.230722][ T72] netlink_unicast+0x449/0x710 [ 3309.230722][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.230722][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.230722][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.230722][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.230722][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.230722][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.230722][ T72] [ 3309.232588][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3309.232906][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3309.232906][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.232906][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.232906][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.232906][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.232906][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.232906][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.232906][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.232906][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.232906][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.232906][ T72] netlink_unicast+0x449/0x710 [ 3309.232906][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.232906][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.232906][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.232906][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.232906][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.232906][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.232906][ T72] [ 3309.235044][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3309.235044][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.235044][ T72] ipv6_find_idev+0x102/0x170 [ 3309.235044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.235044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.235044][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.235044][ T72] netlink_unicast+0x449/0x710 [ 3309.235044][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.235044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.235044][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.235044][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.235044][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.235044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.235044][ T72] [ 3309.236685][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3309.236685][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.236685][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.236685][ T72] ipv6_find_idev+0x102/0x170 [ 3309.236685][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.236685][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.236685][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.236685][ T72] netlink_unicast+0x449/0x710 [ 3309.236685][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.236685][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.236685][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.236685][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.236685][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.236685][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.236685][ T72] [ 3309.238600][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3309.238916][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3309.238916][ T72] netdev_get_by_index+0x5e/0x80 [ 3309.238916][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3309.238916][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3309.238916][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3309.238916][ T72] ipv6_add_addr+0x411/0x2000 [ 3309.238916][ T72] inet6_addr_add+0x30e/0xa40 [ 3309.238916][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3309.238916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.238916][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.238916][ T72] netlink_unicast+0x449/0x710 [ 3309.238916][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.238916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.238916][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.238916][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.238916][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.238916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.238916][ T72] [ 3309.241114][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3309.241114][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3309.241114][ T72] ipv6_find_idev+0x102/0x170 [ 3309.241114][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.241114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.241114][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.241114][ T72] netlink_unicast+0x449/0x710 [ 3309.241114][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.241114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.241114][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.241114][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.241114][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.241114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.241114][ T72] [ 3309.242813][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3309.242813][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3309.242813][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3309.242813][ T72] ipv6_find_idev+0x102/0x170 [ 3309.242813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3309.242813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3309.242813][ T72] netlink_rcv_skb+0x130/0x360 [ 3309.242813][ T72] netlink_unicast+0x449/0x710 [ 3309.242813][ T72] netlink_sendmsg+0x723/0xbe0 [ 3309.242813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3309.242813][ T72] ___sys_sendmsg+0xee/0x170 [ 3309.242813][ T72] __sys_sendmsg+0xcd/0x170 [ 3309.242813][ T72] do_syscall_64+0xc6/0x1e0 [ 3309.242813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3309.242813][ T72] [ 3319.494820][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3319.495295][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3319.495295][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.495295][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.495295][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.495295][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.495295][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.495295][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.495295][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.495295][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.495295][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.495295][ T72] netlink_unicast+0x449/0x710 [ 3319.495295][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.495295][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.495295][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.495295][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.495295][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.495295][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.495295][ T72] [ 3319.497285][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3319.497285][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.497285][ T72] ipv6_find_idev+0x102/0x170 [ 3319.497285][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.497285][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.497285][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.497285][ T72] netlink_unicast+0x449/0x710 [ 3319.497285][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.497285][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.497285][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.497285][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.497285][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.497285][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.497285][ T72] [ 3319.498803][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3319.498803][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.498803][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.498803][ T72] ipv6_find_idev+0x102/0x170 [ 3319.498803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.498803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.498803][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.498803][ T72] netlink_unicast+0x449/0x710 [ 3319.498803][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.498803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.498803][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.498803][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.498803][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.498803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.498803][ T72] [ 3319.500482][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3319.500743][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3319.500743][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.500743][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.500743][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.500743][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.500743][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.500743][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.500743][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.500743][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.500743][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.500743][ T72] netlink_unicast+0x449/0x710 [ 3319.500743][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.500743][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.500743][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.500743][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.500743][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.500743][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.500743][ T72] [ 3319.502709][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3319.502709][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.502709][ T72] ipv6_find_idev+0x102/0x170 [ 3319.502709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.502709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.502709][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.502709][ T72] netlink_unicast+0x449/0x710 [ 3319.502709][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.502709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.502709][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.502709][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.502709][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.502709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.502709][ T72] [ 3319.504218][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3319.504218][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.504218][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.504218][ T72] ipv6_find_idev+0x102/0x170 [ 3319.504218][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.504218][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.504218][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.504218][ T72] netlink_unicast+0x449/0x710 [ 3319.504218][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.504218][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.504218][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.504218][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.504218][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.504218][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.504218][ T72] [ 3319.505863][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3319.506123][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3319.506123][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.506123][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.506123][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.506123][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.506123][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.506123][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.506123][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.506123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.506123][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.506123][ T72] netlink_unicast+0x449/0x710 [ 3319.506123][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.506123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.506123][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.506123][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.506123][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.506123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.506123][ T72] [ 3319.508088][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3319.508088][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.508088][ T72] ipv6_find_idev+0x102/0x170 [ 3319.508088][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.508088][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.508088][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.508088][ T72] netlink_unicast+0x449/0x710 [ 3319.508088][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.508088][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.508088][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.508088][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.508088][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.508088][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.508088][ T72] [ 3319.509599][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3319.509599][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.509599][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.509599][ T72] ipv6_find_idev+0x102/0x170 [ 3319.509599][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.509599][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.509599][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.509599][ T72] netlink_unicast+0x449/0x710 [ 3319.509599][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.509599][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.509599][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.509599][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.509599][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.509599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.509599][ T72] [ 3319.511249][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3319.511510][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3319.511510][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.511510][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.511510][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.511510][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.511510][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.511510][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.511510][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.511510][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.511510][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.511510][ T72] netlink_unicast+0x449/0x710 [ 3319.511510][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.511510][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.511510][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.511510][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.511510][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.511510][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.511510][ T72] [ 3319.513476][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3319.513476][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.513476][ T72] ipv6_find_idev+0x102/0x170 [ 3319.513476][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.513476][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.513476][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.513476][ T72] netlink_unicast+0x449/0x710 [ 3319.513476][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.513476][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.513476][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.513476][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.513476][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.513476][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.513476][ T72] [ 3319.515082][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3319.515082][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.515082][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.515082][ T72] ipv6_find_idev+0x102/0x170 [ 3319.515082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.515082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.515082][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.515082][ T72] netlink_unicast+0x449/0x710 [ 3319.515082][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.515082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.515082][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.515082][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.515082][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.515082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.515082][ T72] [ 3319.517149][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3319.517410][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3319.517410][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.517410][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.517410][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.517410][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.517410][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.517410][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.517410][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.517410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.517410][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.517410][ T72] netlink_unicast+0x449/0x710 [ 3319.517410][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.517410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.517410][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.517410][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.517410][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.517410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.517410][ T72] [ 3319.519413][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3319.519413][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.519413][ T72] ipv6_find_idev+0x102/0x170 [ 3319.519413][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.519413][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.519413][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.519413][ T72] netlink_unicast+0x449/0x710 [ 3319.519413][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.519413][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.519413][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.519413][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.519413][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.519413][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.519413][ T72] [ 3319.520924][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3319.520924][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.520924][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.520924][ T72] ipv6_find_idev+0x102/0x170 [ 3319.520924][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.520924][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.520924][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.520924][ T72] netlink_unicast+0x449/0x710 [ 3319.520924][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.520924][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.520924][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.520924][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.520924][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.520924][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.520924][ T72] [ 3319.522621][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3319.522936][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3319.522936][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.522936][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.522936][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.522936][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.522936][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.522936][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.522936][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.522936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.522936][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.522936][ T72] netlink_unicast+0x449/0x710 [ 3319.522936][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.522936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.522936][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.522936][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.522936][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.522936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.522936][ T72] [ 3319.525042][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3319.525042][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.525042][ T72] ipv6_find_idev+0x102/0x170 [ 3319.525042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.525042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.525042][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.525042][ T72] netlink_unicast+0x449/0x710 [ 3319.525042][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.525042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.525042][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.525042][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.525042][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.525042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.525042][ T72] [ 3319.526804][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3319.526804][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.526804][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.526804][ T72] ipv6_find_idev+0x102/0x170 [ 3319.526804][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.526804][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.526804][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.526804][ T72] netlink_unicast+0x449/0x710 [ 3319.526804][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.526804][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.526804][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.526804][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.526804][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.526804][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.526804][ T72] [ 3319.528671][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3319.528990][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3319.528990][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.528990][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.528990][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.528990][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.528990][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.528990][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.528990][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.528990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.528990][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.528990][ T72] netlink_unicast+0x449/0x710 [ 3319.528990][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.528990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.528990][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.528990][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.528990][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.528990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.528990][ T72] [ 3319.531079][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3319.531079][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.531079][ T72] ipv6_find_idev+0x102/0x170 [ 3319.531079][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.531079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.531079][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.531079][ T72] netlink_unicast+0x449/0x710 [ 3319.531079][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.531079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.531079][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.531079][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.531079][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.531079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.531079][ T72] [ 3319.532709][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3319.532709][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.532709][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.532709][ T72] ipv6_find_idev+0x102/0x170 [ 3319.532709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.532709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.532709][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.532709][ T72] netlink_unicast+0x449/0x710 [ 3319.532709][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.532709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.532709][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.532709][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.532709][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.532709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.532709][ T72] [ 3319.534578][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3319.534903][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3319.534903][ T72] netdev_get_by_index+0x5e/0x80 [ 3319.534903][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3319.534903][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3319.534903][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3319.534903][ T72] ipv6_add_addr+0x411/0x2000 [ 3319.534903][ T72] inet6_addr_add+0x30e/0xa40 [ 3319.534903][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3319.534903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.534903][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.534903][ T72] netlink_unicast+0x449/0x710 [ 3319.534903][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.534903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.534903][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.534903][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.534903][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.534903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.534903][ T72] [ 3319.537120][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3319.537120][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3319.537120][ T72] ipv6_find_idev+0x102/0x170 [ 3319.537120][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.537120][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.537120][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.537120][ T72] netlink_unicast+0x449/0x710 [ 3319.537120][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.537120][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.537120][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.537120][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.537120][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.537120][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.537120][ T72] [ 3319.538813][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3319.538813][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3319.538813][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3319.538813][ T72] ipv6_find_idev+0x102/0x170 [ 3319.538813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3319.538813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3319.538813][ T72] netlink_rcv_skb+0x130/0x360 [ 3319.538813][ T72] netlink_unicast+0x449/0x710 [ 3319.538813][ T72] netlink_sendmsg+0x723/0xbe0 [ 3319.538813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3319.538813][ T72] ___sys_sendmsg+0xee/0x170 [ 3319.538813][ T72] __sys_sendmsg+0xcd/0x170 [ 3319.538813][ T72] do_syscall_64+0xc6/0x1e0 [ 3319.538813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3319.538813][ T72] [ 3329.606850][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3329.607334][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3329.607334][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.607334][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.607334][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.607334][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.607334][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.607334][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.607334][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.607334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.607334][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.607334][ T72] netlink_unicast+0x449/0x710 [ 3329.607334][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.607334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.607334][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.607334][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.607334][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.607334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.607334][ T72] [ 3329.609348][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3329.609348][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.609348][ T72] ipv6_find_idev+0x102/0x170 [ 3329.609348][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.609348][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.609348][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.609348][ T72] netlink_unicast+0x449/0x710 [ 3329.609348][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.609348][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.609348][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.609348][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.609348][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.609348][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.609348][ T72] [ 3329.610886][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3329.610886][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.610886][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.610886][ T72] ipv6_find_idev+0x102/0x170 [ 3329.610886][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.610886][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.610886][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.610886][ T72] netlink_unicast+0x449/0x710 [ 3329.610886][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.610886][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.610886][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.610886][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.610886][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.610886][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.610886][ T72] [ 3329.612573][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3329.612884][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3329.612884][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.612884][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.612884][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.612884][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.612884][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.612884][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.612884][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.612884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.612884][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.612884][ T72] netlink_unicast+0x449/0x710 [ 3329.612884][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.612884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.612884][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.612884][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.612884][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.612884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.612884][ T72] [ 3329.614884][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3329.614884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.614884][ T72] ipv6_find_idev+0x102/0x170 [ 3329.614884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.614884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.614884][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.614884][ T72] netlink_unicast+0x449/0x710 [ 3329.614884][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.614884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.614884][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.614884][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.614884][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.614884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.614884][ T72] [ 3329.616470][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3329.616470][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.616470][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.616470][ T72] ipv6_find_idev+0x102/0x170 [ 3329.616470][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.616470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.616470][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.616470][ T72] netlink_unicast+0x449/0x710 [ 3329.616470][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.616470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.616470][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.616470][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.616470][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.616470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.616470][ T72] [ 3329.618219][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3329.618497][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3329.618497][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.618497][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.618497][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.618497][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.618497][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.618497][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.618497][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.618497][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.618497][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.618497][ T72] netlink_unicast+0x449/0x710 [ 3329.618497][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.618497][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.618497][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.618497][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.618497][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.618497][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.618497][ T72] [ 3329.620523][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3329.620523][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.620523][ T72] ipv6_find_idev+0x102/0x170 [ 3329.620523][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.620523][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.620523][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.620523][ T72] netlink_unicast+0x449/0x710 [ 3329.620523][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.620523][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.620523][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.620523][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.620523][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.620523][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.620523][ T72] [ 3329.622085][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3329.622085][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.622085][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.622085][ T72] ipv6_find_idev+0x102/0x170 [ 3329.622085][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.622085][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.622085][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.622085][ T72] netlink_unicast+0x449/0x710 [ 3329.622085][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.622085][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.622085][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.622085][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.622085][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.622085][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.622085][ T72] [ 3329.624231][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3329.624498][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3329.624498][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.624498][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.624498][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.624498][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.624498][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.624498][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.624498][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.624498][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.624498][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.624498][ T72] netlink_unicast+0x449/0x710 [ 3329.624498][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.624498][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.624498][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.624498][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.624498][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.624498][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.624498][ T72] [ 3329.626553][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3329.626553][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.626553][ T72] ipv6_find_idev+0x102/0x170 [ 3329.626553][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.626553][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.626553][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.626553][ T72] netlink_unicast+0x449/0x710 [ 3329.626553][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.626553][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.626553][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.626553][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.626553][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.626553][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.626553][ T72] [ 3329.628076][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3329.628076][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.628076][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.628076][ T72] ipv6_find_idev+0x102/0x170 [ 3329.628076][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.628076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.628076][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.628076][ T72] netlink_unicast+0x449/0x710 [ 3329.628076][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.628076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.628076][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.628076][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.628076][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.628076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.628076][ T72] [ 3329.629805][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3329.630074][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3329.630074][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.630074][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.630074][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.630074][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.630074][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.630074][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.630074][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.630074][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.630074][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.630074][ T72] netlink_unicast+0x449/0x710 [ 3329.630074][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.630074][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.630074][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.630074][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.630074][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.630074][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.630074][ T72] [ 3329.632078][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3329.632078][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.632078][ T72] ipv6_find_idev+0x102/0x170 [ 3329.632078][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.632078][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.632078][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.632078][ T72] netlink_unicast+0x449/0x710 [ 3329.632078][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.632078][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.632078][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.632078][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.632078][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.632078][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.632078][ T72] [ 3329.633710][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3329.633710][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.633710][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.633710][ T72] ipv6_find_idev+0x102/0x170 [ 3329.633710][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.633710][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.633710][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.633710][ T72] netlink_unicast+0x449/0x710 [ 3329.633710][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.633710][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.633710][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.633710][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.633710][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.633710][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.633710][ T72] [ 3329.635458][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3329.635752][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3329.635752][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.635752][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.635752][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.635752][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.635752][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.635752][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.635752][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.635752][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.635752][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.635752][ T72] netlink_unicast+0x449/0x710 [ 3329.635752][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.635752][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.635752][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.635752][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.635752][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.635752][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.635752][ T72] [ 3329.637903][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3329.637903][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.637903][ T72] ipv6_find_idev+0x102/0x170 [ 3329.637903][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.637903][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.637903][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.637903][ T72] netlink_unicast+0x449/0x710 [ 3329.637903][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.637903][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.637903][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.637903][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.637903][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.637903][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.637903][ T72] [ 3329.639654][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3329.639654][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.639654][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.639654][ T72] ipv6_find_idev+0x102/0x170 [ 3329.639654][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.639654][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.639654][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.639654][ T72] netlink_unicast+0x449/0x710 [ 3329.639654][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.639654][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.639654][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.639654][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.639654][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.639654][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.639654][ T72] [ 3329.641708][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3329.642090][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3329.642090][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.642090][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.642090][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.642090][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.642090][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.642090][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.642090][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.642090][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.642090][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.642090][ T72] netlink_unicast+0x449/0x710 [ 3329.642090][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.642090][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.642090][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.642090][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.642090][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.642090][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.642090][ T72] [ 3329.644296][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3329.644296][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.644296][ T72] ipv6_find_idev+0x102/0x170 [ 3329.644296][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.644296][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.644296][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.644296][ T72] netlink_unicast+0x449/0x710 [ 3329.644296][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.644296][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.644296][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.644296][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.644296][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.644296][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.644296][ T72] [ 3329.646019][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3329.646019][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.646019][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.646019][ T72] ipv6_find_idev+0x102/0x170 [ 3329.646019][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.646019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.646019][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.646019][ T72] netlink_unicast+0x449/0x710 [ 3329.646019][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.646019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.646019][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.646019][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.646019][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.646019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.646019][ T72] [ 3329.648093][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3329.648373][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3329.648373][ T72] netdev_get_by_index+0x5e/0x80 [ 3329.648373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3329.648373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3329.648373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3329.648373][ T72] ipv6_add_addr+0x411/0x2000 [ 3329.648373][ T72] inet6_addr_add+0x30e/0xa40 [ 3329.648373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3329.648373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.648373][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.648373][ T72] netlink_unicast+0x449/0x710 [ 3329.648373][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.648373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.648373][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.648373][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.648373][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.648373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.648373][ T72] [ 3329.650645][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3329.650645][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3329.650645][ T72] ipv6_find_idev+0x102/0x170 [ 3329.650645][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.650645][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.650645][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.650645][ T72] netlink_unicast+0x449/0x710 [ 3329.650645][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.650645][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.650645][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.650645][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.650645][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.650645][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.650645][ T72] [ 3329.652439][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3329.652439][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3329.652439][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3329.652439][ T72] ipv6_find_idev+0x102/0x170 [ 3329.652439][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3329.652439][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3329.652439][ T72] netlink_rcv_skb+0x130/0x360 [ 3329.652439][ T72] netlink_unicast+0x449/0x710 [ 3329.652439][ T72] netlink_sendmsg+0x723/0xbe0 [ 3329.652439][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3329.652439][ T72] ___sys_sendmsg+0xee/0x170 [ 3329.652439][ T72] __sys_sendmsg+0xcd/0x170 [ 3329.652439][ T72] do_syscall_64+0xc6/0x1e0 [ 3329.652439][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3329.652439][ T72] [ 3339.894828][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3339.895297][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3339.895297][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.895297][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.895297][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.895297][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.895297][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.895297][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.895297][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.895297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.895297][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.895297][ T72] netlink_unicast+0x449/0x710 [ 3339.895297][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.895297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.895297][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.895297][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.895297][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.895297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.895297][ T72] [ 3339.897303][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3339.897303][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.897303][ T72] ipv6_find_idev+0x102/0x170 [ 3339.897303][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.897303][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.897303][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.897303][ T72] netlink_unicast+0x449/0x710 [ 3339.897303][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.897303][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.897303][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.897303][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.897303][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.897303][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.897303][ T72] [ 3339.898825][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3339.898825][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.898825][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.898825][ T72] ipv6_find_idev+0x102/0x170 [ 3339.898825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.898825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.898825][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.898825][ T72] netlink_unicast+0x449/0x710 [ 3339.898825][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.898825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.898825][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.898825][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.898825][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.898825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.898825][ T72] [ 3339.900492][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3339.900767][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3339.900767][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.900767][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.900767][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.900767][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.900767][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.900767][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.900767][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.900767][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.900767][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.900767][ T72] netlink_unicast+0x449/0x710 [ 3339.900767][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.900767][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.900767][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.900767][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.900767][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.900767][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.900767][ T72] [ 3339.902735][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3339.902735][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.902735][ T72] ipv6_find_idev+0x102/0x170 [ 3339.902735][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.902735][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.902735][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.902735][ T72] netlink_unicast+0x449/0x710 [ 3339.902735][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.902735][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.902735][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.902735][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.902735][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.902735][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.902735][ T72] [ 3339.904264][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3339.904264][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.904264][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.904264][ T72] ipv6_find_idev+0x102/0x170 [ 3339.904264][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.904264][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.904264][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.904264][ T72] netlink_unicast+0x449/0x710 [ 3339.904264][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.904264][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.904264][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.904264][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.904264][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.904264][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.904264][ T72] [ 3339.905908][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3339.906167][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3339.906167][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.906167][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.906167][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.906167][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.906167][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.906167][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.906167][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.906167][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.906167][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.906167][ T72] netlink_unicast+0x449/0x710 [ 3339.906167][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.906167][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.906167][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.906167][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.906167][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.906167][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.906167][ T72] [ 3339.908137][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3339.908137][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.908137][ T72] ipv6_find_idev+0x102/0x170 [ 3339.908137][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.908137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.908137][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.908137][ T72] netlink_unicast+0x449/0x710 [ 3339.908137][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.908137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.908137][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.908137][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.908137][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.908137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.908137][ T72] [ 3339.909644][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3339.909644][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.909644][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.909644][ T72] ipv6_find_idev+0x102/0x170 [ 3339.909644][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.909644][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.909644][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.909644][ T72] netlink_unicast+0x449/0x710 [ 3339.909644][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.909644][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.909644][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.909644][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.909644][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.909644][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.909644][ T72] [ 3339.911314][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3339.911571][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3339.911571][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.911571][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.911571][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.911571][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.911571][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.911571][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.911571][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.911571][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.911571][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.911571][ T72] netlink_unicast+0x449/0x710 [ 3339.911571][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.911571][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.911571][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.911571][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.911571][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.911571][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.911571][ T72] [ 3339.913547][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3339.913547][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.913547][ T72] ipv6_find_idev+0x102/0x170 [ 3339.913547][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.913547][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.913547][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.913547][ T72] netlink_unicast+0x449/0x710 [ 3339.913547][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.913547][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.913547][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.913547][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.913547][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.913547][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.913547][ T72] [ 3339.915075][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3339.915075][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.915075][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.915075][ T72] ipv6_find_idev+0x102/0x170 [ 3339.915075][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.915075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.915075][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.915075][ T72] netlink_unicast+0x449/0x710 [ 3339.915075][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.915075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.915075][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.915075][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.915075][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.915075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.915075][ T72] [ 3339.917169][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3339.917438][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3339.917438][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.917438][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.917438][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.917438][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.917438][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.917438][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.917438][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.917438][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.917438][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.917438][ T72] netlink_unicast+0x449/0x710 [ 3339.917438][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.917438][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.917438][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.917438][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.917438][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.917438][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.917438][ T72] [ 3339.919407][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3339.919407][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.919407][ T72] ipv6_find_idev+0x102/0x170 [ 3339.919407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.919407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.919407][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.919407][ T72] netlink_unicast+0x449/0x710 [ 3339.919407][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.919407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.919407][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.919407][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.919407][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.919407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.919407][ T72] [ 3339.920918][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3339.920918][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.920918][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.920918][ T72] ipv6_find_idev+0x102/0x170 [ 3339.920918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.920918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.920918][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.920918][ T72] netlink_unicast+0x449/0x710 [ 3339.920918][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.920918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.920918][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.920918][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.920918][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.920918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.920918][ T72] [ 3339.922615][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3339.922931][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3339.922931][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.922931][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.922931][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.922931][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.922931][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.922931][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.922931][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.922931][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.922931][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.922931][ T72] netlink_unicast+0x449/0x710 [ 3339.922931][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.922931][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.922931][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.922931][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.922931][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.922931][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.922931][ T72] [ 3339.925037][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3339.925037][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.925037][ T72] ipv6_find_idev+0x102/0x170 [ 3339.925037][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.925037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.925037][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.925037][ T72] netlink_unicast+0x449/0x710 [ 3339.925037][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.925037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.925037][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.925037][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.925037][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.925037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.925037][ T72] [ 3339.926745][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3339.926745][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.926745][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.926745][ T72] ipv6_find_idev+0x102/0x170 [ 3339.926745][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.926745][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.926745][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.926745][ T72] netlink_unicast+0x449/0x710 [ 3339.926745][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.926745][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.926745][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.926745][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.926745][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.926745][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.926745][ T72] [ 3339.928786][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3339.929064][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3339.929064][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.929064][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.929064][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.929064][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.929064][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.929064][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.929064][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.929064][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.929064][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.929064][ T72] netlink_unicast+0x449/0x710 [ 3339.929064][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.929064][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.929064][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.929064][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.929064][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.929064][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.929064][ T72] [ 3339.931200][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3339.931200][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.931200][ T72] ipv6_find_idev+0x102/0x170 [ 3339.931200][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.931200][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.931200][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.931200][ T72] netlink_unicast+0x449/0x710 [ 3339.931200][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.931200][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.931200][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.931200][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.931200][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.931200][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.931200][ T72] [ 3339.932898][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3339.932898][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.932898][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.932898][ T72] ipv6_find_idev+0x102/0x170 [ 3339.932898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.932898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.932898][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.932898][ T72] netlink_unicast+0x449/0x710 [ 3339.932898][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.932898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.932898][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.932898][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.932898][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.932898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.932898][ T72] [ 3339.934773][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3339.935036][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3339.935036][ T72] netdev_get_by_index+0x5e/0x80 [ 3339.935036][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3339.935036][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3339.935036][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3339.935036][ T72] ipv6_add_addr+0x411/0x2000 [ 3339.935036][ T72] inet6_addr_add+0x30e/0xa40 [ 3339.935036][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3339.935036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.935036][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.935036][ T72] netlink_unicast+0x449/0x710 [ 3339.935036][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.935036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.935036][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.935036][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.935036][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.935036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.935036][ T72] [ 3339.937243][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3339.937243][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3339.937243][ T72] ipv6_find_idev+0x102/0x170 [ 3339.937243][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.937243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.937243][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.937243][ T72] netlink_unicast+0x449/0x710 [ 3339.937243][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.937243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.937243][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.937243][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.937243][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.937243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.937243][ T72] [ 3339.939003][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3339.939003][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3339.939003][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3339.939003][ T72] ipv6_find_idev+0x102/0x170 [ 3339.939003][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3339.939003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3339.939003][ T72] netlink_rcv_skb+0x130/0x360 [ 3339.939003][ T72] netlink_unicast+0x449/0x710 [ 3339.939003][ T72] netlink_sendmsg+0x723/0xbe0 [ 3339.939003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3339.939003][ T72] ___sys_sendmsg+0xee/0x170 [ 3339.939003][ T72] __sys_sendmsg+0xcd/0x170 [ 3339.939003][ T72] do_syscall_64+0xc6/0x1e0 [ 3339.939003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3339.939003][ T72] [ 3350.182910][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3350.183336][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3350.183336][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.183336][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.183336][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.183336][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.183336][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.183336][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.183336][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.183336][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.183336][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.183336][ T72] netlink_unicast+0x449/0x710 [ 3350.183336][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.183336][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.183336][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.183336][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.183336][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.183336][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.183336][ T72] [ 3350.185307][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3350.185307][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.185307][ T72] ipv6_find_idev+0x102/0x170 [ 3350.185307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.185307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.185307][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.185307][ T72] netlink_unicast+0x449/0x710 [ 3350.185307][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.185307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.185307][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.185307][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.185307][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.185307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.185307][ T72] [ 3350.186825][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3350.186825][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.186825][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.186825][ T72] ipv6_find_idev+0x102/0x170 [ 3350.186825][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.186825][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.186825][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.186825][ T72] netlink_unicast+0x449/0x710 [ 3350.186825][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.186825][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.186825][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.186825][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.186825][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.186825][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.186825][ T72] [ 3350.188493][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3350.188768][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3350.188768][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.188768][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.188768][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.188768][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.188768][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.188768][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.188768][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.188768][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.188768][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.188768][ T72] netlink_unicast+0x449/0x710 [ 3350.188768][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.188768][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.188768][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.188768][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.188768][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.188768][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.188768][ T72] [ 3350.190725][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3350.190725][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.190725][ T72] ipv6_find_idev+0x102/0x170 [ 3350.190725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.190725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.190725][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.190725][ T72] netlink_unicast+0x449/0x710 [ 3350.190725][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.190725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.190725][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.190725][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.190725][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.190725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.190725][ T72] [ 3350.192233][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3350.192233][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.192233][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.192233][ T72] ipv6_find_idev+0x102/0x170 [ 3350.192233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.192233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.192233][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.192233][ T72] netlink_unicast+0x449/0x710 [ 3350.192233][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.192233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.192233][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.192233][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.192233][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.192233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.192233][ T72] [ 3350.193871][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3350.194133][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3350.194133][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.194133][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.194133][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.194133][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.194133][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.194133][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.194133][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.194133][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.194133][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.194133][ T72] netlink_unicast+0x449/0x710 [ 3350.194133][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.194133][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.194133][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.194133][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.194133][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.194133][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.194133][ T72] [ 3350.196104][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3350.196104][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.196104][ T72] ipv6_find_idev+0x102/0x170 [ 3350.196104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.196104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.196104][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.196104][ T72] netlink_unicast+0x449/0x710 [ 3350.196104][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.196104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.196104][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.196104][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.196104][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.196104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.196104][ T72] [ 3350.197612][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3350.197612][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.197612][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.197612][ T72] ipv6_find_idev+0x102/0x170 [ 3350.197612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.197612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.197612][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.197612][ T72] netlink_unicast+0x449/0x710 [ 3350.197612][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.197612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.197612][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.197612][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.197612][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.197612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.197612][ T72] [ 3350.199255][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3350.199518][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3350.199518][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.199518][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.199518][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.199518][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.199518][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.199518][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.199518][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.199518][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.199518][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.199518][ T72] netlink_unicast+0x449/0x710 [ 3350.199518][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.199518][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.199518][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.199518][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.199518][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.199518][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.199518][ T72] [ 3350.201484][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3350.201484][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.201484][ T72] ipv6_find_idev+0x102/0x170 [ 3350.201484][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.201484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.201484][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.201484][ T72] netlink_unicast+0x449/0x710 [ 3350.201484][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.201484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.201484][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.201484][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.201484][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.201484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.201484][ T72] [ 3350.202990][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3350.202990][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.202990][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.202990][ T72] ipv6_find_idev+0x102/0x170 [ 3350.202990][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.202990][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.202990][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.202990][ T72] netlink_unicast+0x449/0x710 [ 3350.202990][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.202990][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.202990][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.202990][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.202990][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.202990][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.202990][ T72] [ 3350.205037][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3350.205294][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3350.205294][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.205294][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.205294][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.205294][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.205294][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.205294][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.205294][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.205294][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.205294][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.205294][ T72] netlink_unicast+0x449/0x710 [ 3350.205294][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.205294][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.205294][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.205294][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.205294][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.205294][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.205294][ T72] [ 3350.207258][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3350.207258][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.207258][ T72] ipv6_find_idev+0x102/0x170 [ 3350.207258][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.207258][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.207258][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.207258][ T72] netlink_unicast+0x449/0x710 [ 3350.207258][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.207258][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.207258][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.207258][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.207258][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.207258][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.207258][ T72] [ 3350.208806][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3350.208806][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.208806][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.208806][ T72] ipv6_find_idev+0x102/0x170 [ 3350.208806][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.208806][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.208806][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.208806][ T72] netlink_unicast+0x449/0x710 [ 3350.208806][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.208806][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.208806][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.208806][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.208806][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.208806][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.208806][ T72] [ 3350.210506][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3350.210766][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3350.210766][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.210766][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.210766][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.210766][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.210766][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.210766][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.210766][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.210766][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.210766][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.210766][ T72] netlink_unicast+0x449/0x710 [ 3350.210766][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.210766][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.210766][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.210766][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.210766][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.210766][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.210766][ T72] [ 3350.212853][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3350.212853][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.212853][ T72] ipv6_find_idev+0x102/0x170 [ 3350.212853][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.212853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.212853][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.212853][ T72] netlink_unicast+0x449/0x710 [ 3350.212853][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.212853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.212853][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.212853][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.212853][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.212853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.212853][ T72] [ 3350.214541][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3350.214541][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.214541][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.214541][ T72] ipv6_find_idev+0x102/0x170 [ 3350.214541][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.214541][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.214541][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.214541][ T72] netlink_unicast+0x449/0x710 [ 3350.214541][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.214541][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.214541][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.214541][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.214541][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.214541][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.214541][ T72] [ 3350.216466][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3350.216723][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3350.216723][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.216723][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.216723][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.216723][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.216723][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.216723][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.216723][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.216723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.216723][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.216723][ T72] netlink_unicast+0x449/0x710 [ 3350.216723][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.216723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.216723][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.216723][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.216723][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.216723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.216723][ T72] [ 3350.218926][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3350.218926][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.218926][ T72] ipv6_find_idev+0x102/0x170 [ 3350.218926][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.218926][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.218926][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.218926][ T72] netlink_unicast+0x449/0x710 [ 3350.218926][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.218926][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.218926][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.218926][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.218926][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.218926][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.218926][ T72] [ 3350.220615][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3350.220615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.220615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.220615][ T72] ipv6_find_idev+0x102/0x170 [ 3350.220615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.220615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.220615][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.220615][ T72] netlink_unicast+0x449/0x710 [ 3350.220615][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.220615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.220615][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.220615][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.220615][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.220615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.220615][ T72] [ 3350.222487][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3350.222751][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3350.222751][ T72] netdev_get_by_index+0x5e/0x80 [ 3350.222751][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3350.222751][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3350.222751][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3350.222751][ T72] ipv6_add_addr+0x411/0x2000 [ 3350.222751][ T72] inet6_addr_add+0x30e/0xa40 [ 3350.222751][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3350.222751][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.222751][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.222751][ T72] netlink_unicast+0x449/0x710 [ 3350.222751][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.222751][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.222751][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.222751][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.222751][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.222751][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.222751][ T72] [ 3350.224944][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3350.224944][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3350.224944][ T72] ipv6_find_idev+0x102/0x170 [ 3350.224944][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.224944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.224944][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.224944][ T72] netlink_unicast+0x449/0x710 [ 3350.224944][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.224944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.224944][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.224944][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.224944][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.224944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.224944][ T72] [ 3350.226579][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3350.226579][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3350.226579][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3350.226579][ T72] ipv6_find_idev+0x102/0x170 [ 3350.226579][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3350.226579][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3350.226579][ T72] netlink_rcv_skb+0x130/0x360 [ 3350.226579][ T72] netlink_unicast+0x449/0x710 [ 3350.226579][ T72] netlink_sendmsg+0x723/0xbe0 [ 3350.226579][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3350.226579][ T72] ___sys_sendmsg+0xee/0x170 [ 3350.226579][ T72] __sys_sendmsg+0xcd/0x170 [ 3350.226579][ T72] do_syscall_64+0xc6/0x1e0 [ 3350.226579][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3350.226579][ T72] [ 3360.470860][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3360.471273][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3360.471273][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.471273][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.471273][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.471273][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.471273][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.471273][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.471273][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.471273][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.471273][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.471273][ T72] netlink_unicast+0x449/0x710 [ 3360.471273][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.471273][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.471273][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.471273][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.471273][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.471273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.471273][ T72] [ 3360.473253][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3360.473253][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.473253][ T72] ipv6_find_idev+0x102/0x170 [ 3360.473253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.473253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.473253][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.473253][ T72] netlink_unicast+0x449/0x710 [ 3360.473253][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.473253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.473253][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.473253][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.473253][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.473253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.473253][ T72] [ 3360.474774][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3360.474774][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.474774][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.474774][ T72] ipv6_find_idev+0x102/0x170 [ 3360.474774][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.474774][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.474774][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.474774][ T72] netlink_unicast+0x449/0x710 [ 3360.474774][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.474774][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.474774][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.474774][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.474774][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.474774][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.474774][ T72] [ 3360.476450][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3360.476718][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3360.476718][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.476718][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.476718][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.476718][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.476718][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.476718][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.476718][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.476718][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.476718][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.476718][ T72] netlink_unicast+0x449/0x710 [ 3360.476718][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.476718][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.476718][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.476718][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.476718][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.476718][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.476718][ T72] [ 3360.478681][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3360.478681][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.478681][ T72] ipv6_find_idev+0x102/0x170 [ 3360.478681][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.478681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.478681][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.478681][ T72] netlink_unicast+0x449/0x710 [ 3360.478681][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.478681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.478681][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.478681][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.478681][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.478681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.478681][ T72] [ 3360.480198][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3360.480198][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.480198][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.480198][ T72] ipv6_find_idev+0x102/0x170 [ 3360.480198][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.480198][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.480198][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.480198][ T72] netlink_unicast+0x449/0x710 [ 3360.480198][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.480198][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.480198][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.480198][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.480198][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.480198][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.480198][ T72] [ 3360.481838][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3360.482095][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3360.482095][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.482095][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.482095][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.482095][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.482095][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.482095][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.482095][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.482095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.482095][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.482095][ T72] netlink_unicast+0x449/0x710 [ 3360.482095][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.482095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.482095][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.482095][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.482095][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.482095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.482095][ T72] [ 3360.484058][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3360.484058][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.484058][ T72] ipv6_find_idev+0x102/0x170 [ 3360.484058][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.484058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.484058][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.484058][ T72] netlink_unicast+0x449/0x710 [ 3360.484058][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.484058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.484058][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.484058][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.484058][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.484058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.484058][ T72] [ 3360.485583][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3360.485583][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.485583][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.485583][ T72] ipv6_find_idev+0x102/0x170 [ 3360.485583][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.485583][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.485583][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.485583][ T72] netlink_unicast+0x449/0x710 [ 3360.485583][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.485583][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.485583][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.485583][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.485583][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.485583][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.485583][ T72] [ 3360.487243][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3360.487507][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3360.487507][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.487507][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.487507][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.487507][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.487507][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.487507][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.487507][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.487507][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.487507][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.487507][ T72] netlink_unicast+0x449/0x710 [ 3360.487507][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.487507][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.487507][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.487507][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.487507][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.487507][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.487507][ T72] [ 3360.489483][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3360.489483][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.489483][ T72] ipv6_find_idev+0x102/0x170 [ 3360.489483][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.489483][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.489483][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.489483][ T72] netlink_unicast+0x449/0x710 [ 3360.489483][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.489483][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.489483][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.489483][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.489483][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.489483][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.489483][ T72] [ 3360.490999][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3360.490999][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.490999][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.490999][ T72] ipv6_find_idev+0x102/0x170 [ 3360.490999][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.490999][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.490999][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.490999][ T72] netlink_unicast+0x449/0x710 [ 3360.490999][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.490999][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.490999][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.490999][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.490999][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.490999][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.490999][ T72] [ 3360.493097][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3360.493355][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3360.493355][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.493355][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.493355][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.493355][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.493355][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.493355][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.493355][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.493355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.493355][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.493355][ T72] netlink_unicast+0x449/0x710 [ 3360.493355][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.493355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.493355][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.493355][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.493355][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.493355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.493355][ T72] [ 3360.495317][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3360.495317][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.495317][ T72] ipv6_find_idev+0x102/0x170 [ 3360.495317][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.495317][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.495317][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.495317][ T72] netlink_unicast+0x449/0x710 [ 3360.495317][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.495317][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.495317][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.495317][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.495317][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.495317][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.495317][ T72] [ 3360.496827][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3360.496827][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.496827][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.496827][ T72] ipv6_find_idev+0x102/0x170 [ 3360.496827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.496827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.496827][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.496827][ T72] netlink_unicast+0x449/0x710 [ 3360.496827][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.496827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.496827][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.496827][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.496827][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.496827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.496827][ T72] [ 3360.498518][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3360.498786][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3360.498786][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.498786][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.498786][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.498786][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.498786][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.498786][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.498786][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.498786][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.498786][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.498786][ T72] netlink_unicast+0x449/0x710 [ 3360.498786][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.498786][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.498786][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.498786][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.498786][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.498786][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.498786][ T72] [ 3360.500859][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3360.500859][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.500859][ T72] ipv6_find_idev+0x102/0x170 [ 3360.500859][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.500859][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.500859][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.500859][ T72] netlink_unicast+0x449/0x710 [ 3360.500859][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.500859][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.500859][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.500859][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.500859][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.500859][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.500859][ T72] [ 3360.502612][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3360.502612][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.502612][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.502612][ T72] ipv6_find_idev+0x102/0x170 [ 3360.502612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.502612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.502612][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.502612][ T72] netlink_unicast+0x449/0x710 [ 3360.502612][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.502612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.502612][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.502612][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.502612][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.502612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.502612][ T72] [ 3360.504537][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3360.504842][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3360.504842][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.504842][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.504842][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.504842][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.504842][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.504842][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.504842][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.504842][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.504842][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.504842][ T72] netlink_unicast+0x449/0x710 [ 3360.504842][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.504842][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.504842][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.504842][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.504842][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.504842][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.504842][ T72] [ 3360.506941][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3360.506941][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.506941][ T72] ipv6_find_idev+0x102/0x170 [ 3360.506941][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.506941][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.506941][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.506941][ T72] netlink_unicast+0x449/0x710 [ 3360.506941][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.506941][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.506941][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.506941][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.506941][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.506941][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.506941][ T72] [ 3360.508572][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3360.508572][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.508572][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.508572][ T72] ipv6_find_idev+0x102/0x170 [ 3360.508572][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.508572][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.508572][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.508572][ T72] netlink_unicast+0x449/0x710 [ 3360.508572][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.508572][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.508572][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.508572][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.508572][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.508572][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.508572][ T72] [ 3360.510444][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3360.510706][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3360.510706][ T72] netdev_get_by_index+0x5e/0x80 [ 3360.510706][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3360.510706][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3360.510706][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3360.510706][ T72] ipv6_add_addr+0x411/0x2000 [ 3360.510706][ T72] inet6_addr_add+0x30e/0xa40 [ 3360.510706][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3360.510706][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.510706][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.510706][ T72] netlink_unicast+0x449/0x710 [ 3360.510706][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.510706][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.510706][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.510706][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.510706][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.510706][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.510706][ T72] [ 3360.512910][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3360.512910][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3360.512910][ T72] ipv6_find_idev+0x102/0x170 [ 3360.512910][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.512910][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.512910][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.512910][ T72] netlink_unicast+0x449/0x710 [ 3360.512910][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.512910][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.512910][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.512910][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.512910][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.512910][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.512910][ T72] [ 3360.514609][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3360.514609][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3360.514609][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3360.514609][ T72] ipv6_find_idev+0x102/0x170 [ 3360.514609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3360.514609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3360.514609][ T72] netlink_rcv_skb+0x130/0x360 [ 3360.514609][ T72] netlink_unicast+0x449/0x710 [ 3360.514609][ T72] netlink_sendmsg+0x723/0xbe0 [ 3360.514609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3360.514609][ T72] ___sys_sendmsg+0xee/0x170 [ 3360.514609][ T72] __sys_sendmsg+0xcd/0x170 [ 3360.514609][ T72] do_syscall_64+0xc6/0x1e0 [ 3360.514609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3360.514609][ T72] [ 3370.758856][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3370.759453][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3370.759453][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.759453][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.759453][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.759453][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.759453][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.759453][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.759453][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.759453][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.759453][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.759453][ T72] netlink_unicast+0x449/0x710 [ 3370.759453][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.759453][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.759453][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.759453][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.759453][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.759453][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.759453][ T72] [ 3370.761424][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3370.761424][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.761424][ T72] ipv6_find_idev+0x102/0x170 [ 3370.761424][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.761424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.761424][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.761424][ T72] netlink_unicast+0x449/0x710 [ 3370.761424][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.761424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.761424][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.761424][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.761424][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.761424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.761424][ T72] [ 3370.762940][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3370.762940][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.762940][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.762940][ T72] ipv6_find_idev+0x102/0x170 [ 3370.762940][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.762940][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.762940][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.762940][ T72] netlink_unicast+0x449/0x710 [ 3370.762940][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.762940][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.762940][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.762940][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.762940][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.762940][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.762940][ T72] [ 3370.764625][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3370.764905][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3370.764905][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.764905][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.764905][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.764905][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.764905][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.764905][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.764905][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.764905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.764905][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.764905][ T72] netlink_unicast+0x449/0x710 [ 3370.764905][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.764905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.764905][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.764905][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.764905][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.764905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.764905][ T72] [ 3370.766878][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3370.766878][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.766878][ T72] ipv6_find_idev+0x102/0x170 [ 3370.766878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.766878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.766878][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.766878][ T72] netlink_unicast+0x449/0x710 [ 3370.766878][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.766878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.766878][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.766878][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.766878][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.766878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.766878][ T72] [ 3370.768407][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3370.768407][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.768407][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.768407][ T72] ipv6_find_idev+0x102/0x170 [ 3370.768407][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.768407][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.768407][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.768407][ T72] netlink_unicast+0x449/0x710 [ 3370.768407][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.768407][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.768407][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.768407][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.768407][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.768407][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.768407][ T72] [ 3370.770612][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3370.770887][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3370.770887][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.770887][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.770887][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.770887][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.770887][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.770887][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.770887][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.770887][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.770887][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.770887][ T72] netlink_unicast+0x449/0x710 [ 3370.770887][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.770887][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.770887][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.770887][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.770887][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.770887][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.770887][ T72] [ 3370.772850][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3370.772850][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.772850][ T72] ipv6_find_idev+0x102/0x170 [ 3370.772850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.772850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.772850][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.772850][ T72] netlink_unicast+0x449/0x710 [ 3370.772850][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.772850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.772850][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.772850][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.772850][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.772850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.772850][ T72] [ 3370.774360][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3370.774360][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.774360][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.774360][ T72] ipv6_find_idev+0x102/0x170 [ 3370.774360][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.774360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.774360][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.774360][ T72] netlink_unicast+0x449/0x710 [ 3370.774360][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.774360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.774360][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.774360][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.774360][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.774360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.774360][ T72] [ 3370.776412][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3370.776671][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3370.776671][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.776671][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.776671][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.776671][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.776671][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.776671][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.776671][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.776671][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.776671][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.776671][ T72] netlink_unicast+0x449/0x710 [ 3370.776671][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.776671][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.776671][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.776671][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.776671][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.776671][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.776671][ T72] [ 3370.778632][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3370.778632][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.778632][ T72] ipv6_find_idev+0x102/0x170 [ 3370.778632][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.778632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.778632][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.778632][ T72] netlink_unicast+0x449/0x710 [ 3370.778632][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.778632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.778632][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.778632][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.778632][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.778632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.778632][ T72] [ 3370.780142][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3370.780142][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.780142][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.780142][ T72] ipv6_find_idev+0x102/0x170 [ 3370.780142][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.780142][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.780142][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.780142][ T72] netlink_unicast+0x449/0x710 [ 3370.780142][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.780142][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.780142][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.780142][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.780142][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.780142][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.780142][ T72] [ 3370.782228][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3370.782490][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3370.782490][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.782490][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.782490][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.782490][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.782490][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.782490][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.782490][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.782490][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.782490][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.782490][ T72] netlink_unicast+0x449/0x710 [ 3370.782490][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.782490][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.782490][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.782490][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.782490][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.782490][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.782490][ T72] [ 3370.784457][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3370.784457][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.784457][ T72] ipv6_find_idev+0x102/0x170 [ 3370.784457][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.784457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.784457][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.784457][ T72] netlink_unicast+0x449/0x710 [ 3370.784457][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.784457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.784457][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.784457][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.784457][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.784457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.784457][ T72] [ 3370.785994][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3370.785994][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.785994][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.785994][ T72] ipv6_find_idev+0x102/0x170 [ 3370.785994][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.785994][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.785994][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.785994][ T72] netlink_unicast+0x449/0x710 [ 3370.785994][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.785994][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.785994][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.785994][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.785994][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.785994][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.785994][ T72] [ 3370.787674][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3370.787986][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3370.787986][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.787986][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.787986][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.787986][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.787986][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.787986][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.787986][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.787986][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.787986][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.787986][ T72] netlink_unicast+0x449/0x710 [ 3370.787986][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.787986][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.787986][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.787986][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.787986][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.787986][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.787986][ T72] [ 3370.790012][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3370.790012][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.790012][ T72] ipv6_find_idev+0x102/0x170 [ 3370.790012][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.790012][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.790012][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.790012][ T72] netlink_unicast+0x449/0x710 [ 3370.790012][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.790012][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.790012][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.790012][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.790012][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.790012][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.790012][ T72] [ 3370.791763][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3370.791763][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.791763][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.791763][ T72] ipv6_find_idev+0x102/0x170 [ 3370.791763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.791763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.791763][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.791763][ T72] netlink_unicast+0x449/0x710 [ 3370.791763][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.791763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.791763][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.791763][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.791763][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.791763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.791763][ T72] [ 3370.793622][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3370.793936][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3370.793936][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.793936][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.793936][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.793936][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.793936][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.793936][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.793936][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.793936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.793936][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.793936][ T72] netlink_unicast+0x449/0x710 [ 3370.793936][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.793936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.793936][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.793936][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.793936][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.793936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.793936][ T72] [ 3370.796087][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3370.796087][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.796087][ T72] ipv6_find_idev+0x102/0x170 [ 3370.796087][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.796087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.796087][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.796087][ T72] netlink_unicast+0x449/0x710 [ 3370.796087][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.796087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.796087][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.796087][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.796087][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.796087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.796087][ T72] [ 3370.797723][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3370.797723][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.797723][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.797723][ T72] ipv6_find_idev+0x102/0x170 [ 3370.797723][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.797723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.797723][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.797723][ T72] netlink_unicast+0x449/0x710 [ 3370.797723][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.797723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.797723][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.797723][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.797723][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.797723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.797723][ T72] [ 3370.799651][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3370.799971][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3370.799971][ T72] netdev_get_by_index+0x5e/0x80 [ 3370.799971][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3370.799971][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3370.799971][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3370.799971][ T72] ipv6_add_addr+0x411/0x2000 [ 3370.799971][ T72] inet6_addr_add+0x30e/0xa40 [ 3370.799971][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3370.799971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.799971][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.799971][ T72] netlink_unicast+0x449/0x710 [ 3370.799971][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.799971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.799971][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.799971][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.799971][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.799971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.799971][ T72] [ 3370.802171][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3370.802171][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3370.802171][ T72] ipv6_find_idev+0x102/0x170 [ 3370.802171][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.802171][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.802171][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.802171][ T72] netlink_unicast+0x449/0x710 [ 3370.802171][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.802171][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.802171][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.802171][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.802171][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.802171][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.802171][ T72] [ 3370.804230][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3370.804230][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3370.804230][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3370.804230][ T72] ipv6_find_idev+0x102/0x170 [ 3370.804230][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3370.804230][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3370.804230][ T72] netlink_rcv_skb+0x130/0x360 [ 3370.804230][ T72] netlink_unicast+0x449/0x710 [ 3370.804230][ T72] netlink_sendmsg+0x723/0xbe0 [ 3370.804230][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3370.804230][ T72] ___sys_sendmsg+0xee/0x170 [ 3370.804230][ T72] __sys_sendmsg+0xcd/0x170 [ 3370.804230][ T72] do_syscall_64+0xc6/0x1e0 [ 3370.804230][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3370.804230][ T72] [ 3381.046893][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3381.047368][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3381.047368][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.047368][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.047368][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.047368][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.047368][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.047368][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.047368][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.047368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.047368][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.047368][ T72] netlink_unicast+0x449/0x710 [ 3381.047368][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.047368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.047368][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.047368][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.047368][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.047368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.047368][ T72] [ 3381.049459][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3381.049459][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.049459][ T72] ipv6_find_idev+0x102/0x170 [ 3381.049459][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.049459][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.049459][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.049459][ T72] netlink_unicast+0x449/0x710 [ 3381.049459][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.049459][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.049459][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.049459][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.049459][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.049459][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.049459][ T72] [ 3381.050980][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3381.050980][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.050980][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.050980][ T72] ipv6_find_idev+0x102/0x170 [ 3381.050980][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.050980][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.050980][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.050980][ T72] netlink_unicast+0x449/0x710 [ 3381.050980][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.050980][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.050980][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.050980][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.050980][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.050980][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.050980][ T72] [ 3381.052646][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3381.052945][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3381.052945][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.052945][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.052945][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.052945][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.052945][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.052945][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.052945][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.052945][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.052945][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.052945][ T72] netlink_unicast+0x449/0x710 [ 3381.052945][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.052945][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.052945][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.052945][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.052945][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.052945][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.052945][ T72] [ 3381.054909][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3381.054909][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.054909][ T72] ipv6_find_idev+0x102/0x170 [ 3381.054909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.054909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.054909][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.054909][ T72] netlink_unicast+0x449/0x710 [ 3381.054909][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.054909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.054909][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.054909][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.054909][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.054909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.054909][ T72] [ 3381.056434][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3381.056434][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.056434][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.056434][ T72] ipv6_find_idev+0x102/0x170 [ 3381.056434][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.056434][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.056434][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.056434][ T72] netlink_unicast+0x449/0x710 [ 3381.056434][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.056434][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.056434][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.056434][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.056434][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.056434][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.056434][ T72] [ 3381.058080][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3381.058338][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3381.058338][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.058338][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.058338][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.058338][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.058338][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.058338][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.058338][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.058338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.058338][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.058338][ T72] netlink_unicast+0x449/0x710 [ 3381.058338][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.058338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.058338][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.058338][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.058338][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.058338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.058338][ T72] [ 3381.060297][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3381.060297][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.060297][ T72] ipv6_find_idev+0x102/0x170 [ 3381.060297][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.060297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.060297][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.060297][ T72] netlink_unicast+0x449/0x710 [ 3381.060297][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.060297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.060297][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.060297][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.060297][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.060297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.060297][ T72] [ 3381.061812][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3381.061812][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.061812][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.061812][ T72] ipv6_find_idev+0x102/0x170 [ 3381.061812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.061812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.061812][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.061812][ T72] netlink_unicast+0x449/0x710 [ 3381.061812][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.061812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.061812][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.061812][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.061812][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.061812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.061812][ T72] [ 3381.063513][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3381.063776][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3381.063776][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.063776][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.063776][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.063776][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.063776][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.063776][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.063776][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.063776][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.063776][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.063776][ T72] netlink_unicast+0x449/0x710 [ 3381.063776][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.063776][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.063776][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.063776][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.063776][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.063776][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.063776][ T72] [ 3381.065753][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3381.065753][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.065753][ T72] ipv6_find_idev+0x102/0x170 [ 3381.065753][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.065753][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.065753][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.065753][ T72] netlink_unicast+0x449/0x710 [ 3381.065753][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.065753][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.065753][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.065753][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.065753][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.065753][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.065753][ T72] [ 3381.067270][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3381.067270][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.067270][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.067270][ T72] ipv6_find_idev+0x102/0x170 [ 3381.067270][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.067270][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.067270][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.067270][ T72] netlink_unicast+0x449/0x710 [ 3381.067270][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.067270][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.067270][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.067270][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.067270][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.067270][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.067270][ T72] [ 3381.068975][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3381.069239][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3381.069239][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.069239][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.069239][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.069239][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.069239][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.069239][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.069239][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.069239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.069239][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.069239][ T72] netlink_unicast+0x449/0x710 [ 3381.069239][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.069239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.069239][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.069239][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.069239][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.069239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.069239][ T72] [ 3381.071203][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3381.071203][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.071203][ T72] ipv6_find_idev+0x102/0x170 [ 3381.071203][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.071203][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.071203][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.071203][ T72] netlink_unicast+0x449/0x710 [ 3381.071203][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.071203][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.071203][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.071203][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.071203][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.071203][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.071203][ T72] [ 3381.072727][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3381.072727][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.072727][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.072727][ T72] ipv6_find_idev+0x102/0x170 [ 3381.072727][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.072727][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.072727][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.072727][ T72] netlink_unicast+0x449/0x710 [ 3381.072727][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.072727][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.072727][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.072727][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.072727][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.072727][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.072727][ T72] [ 3381.074589][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3381.074905][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3381.074905][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.074905][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.074905][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.074905][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.074905][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.074905][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.074905][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.074905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.074905][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.074905][ T72] netlink_unicast+0x449/0x710 [ 3381.074905][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.074905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.074905][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.074905][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.074905][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.074905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.074905][ T72] [ 3381.077130][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3381.077130][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.077130][ T72] ipv6_find_idev+0x102/0x170 [ 3381.077130][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.077130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.077130][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.077130][ T72] netlink_unicast+0x449/0x710 [ 3381.077130][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.077130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.077130][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.077130][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.077130][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.077130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.077130][ T72] [ 3381.078822][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3381.078822][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.078822][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.078822][ T72] ipv6_find_idev+0x102/0x170 [ 3381.078822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.078822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.078822][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.078822][ T72] netlink_unicast+0x449/0x710 [ 3381.078822][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.078822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.078822][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.078822][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.078822][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.078822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.078822][ T72] [ 3381.080762][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3381.081026][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3381.081026][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.081026][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.081026][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.081026][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.081026][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.081026][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.081026][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.081026][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.081026][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.081026][ T72] netlink_unicast+0x449/0x710 [ 3381.081026][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.081026][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.081026][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.081026][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.081026][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.081026][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.081026][ T72] [ 3381.083163][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3381.083163][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.083163][ T72] ipv6_find_idev+0x102/0x170 [ 3381.083163][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.083163][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.083163][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.083163][ T72] netlink_unicast+0x449/0x710 [ 3381.083163][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.083163][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.083163][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.083163][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.083163][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.083163][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.083163][ T72] [ 3381.084855][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3381.084855][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.084855][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.084855][ T72] ipv6_find_idev+0x102/0x170 [ 3381.084855][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.084855][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.084855][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.084855][ T72] netlink_unicast+0x449/0x710 [ 3381.084855][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.084855][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.084855][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.084855][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.084855][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.084855][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.084855][ T72] [ 3381.086860][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3381.087118][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3381.087118][ T72] netdev_get_by_index+0x5e/0x80 [ 3381.087118][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3381.087118][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3381.087118][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3381.087118][ T72] ipv6_add_addr+0x411/0x2000 [ 3381.087118][ T72] inet6_addr_add+0x30e/0xa40 [ 3381.087118][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3381.087118][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.087118][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.087118][ T72] netlink_unicast+0x449/0x710 [ 3381.087118][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.087118][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.087118][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.087118][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.087118][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.087118][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.087118][ T72] [ 3381.089206][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3381.089206][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3381.089206][ T72] ipv6_find_idev+0x102/0x170 [ 3381.089206][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.089206][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.089206][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.089206][ T72] netlink_unicast+0x449/0x710 [ 3381.089206][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.089206][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.089206][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.089206][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.089206][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.089206][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.089206][ T72] [ 3381.090898][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3381.090898][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3381.090898][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3381.090898][ T72] ipv6_find_idev+0x102/0x170 [ 3381.090898][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3381.090898][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3381.090898][ T72] netlink_rcv_skb+0x130/0x360 [ 3381.090898][ T72] netlink_unicast+0x449/0x710 [ 3381.090898][ T72] netlink_sendmsg+0x723/0xbe0 [ 3381.090898][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3381.090898][ T72] ___sys_sendmsg+0xee/0x170 [ 3381.090898][ T72] __sys_sendmsg+0xcd/0x170 [ 3381.090898][ T72] do_syscall_64+0xc6/0x1e0 [ 3381.090898][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3381.090898][ T72] [ 3391.334857][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3391.335408][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3391.335408][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.335408][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.335408][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.335408][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.335408][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.335408][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.335408][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.335408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.335408][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.335408][ T72] netlink_unicast+0x449/0x710 [ 3391.335408][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.335408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.335408][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.335408][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.335408][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.335408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.335408][ T72] [ 3391.337405][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3391.337405][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.337405][ T72] ipv6_find_idev+0x102/0x170 [ 3391.337405][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.337405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.337405][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.337405][ T72] netlink_unicast+0x449/0x710 [ 3391.337405][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.337405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.337405][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.337405][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.337405][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.337405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.337405][ T72] [ 3391.338935][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3391.338935][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.338935][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.338935][ T72] ipv6_find_idev+0x102/0x170 [ 3391.338935][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.338935][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.338935][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.338935][ T72] netlink_unicast+0x449/0x710 [ 3391.338935][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.338935][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.338935][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.338935][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.338935][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.338935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.338935][ T72] [ 3391.340635][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3391.340944][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3391.340944][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.340944][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.340944][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.340944][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.340944][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.340944][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.340944][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.340944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.340944][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.340944][ T72] netlink_unicast+0x449/0x710 [ 3391.340944][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.340944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.340944][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.340944][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.340944][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.340944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.340944][ T72] [ 3391.342929][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3391.342929][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.342929][ T72] ipv6_find_idev+0x102/0x170 [ 3391.342929][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.342929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.342929][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.342929][ T72] netlink_unicast+0x449/0x710 [ 3391.342929][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.342929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.342929][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.342929][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.342929][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.342929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.342929][ T72] [ 3391.344467][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3391.344467][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.344467][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.344467][ T72] ipv6_find_idev+0x102/0x170 [ 3391.344467][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.344467][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.344467][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.344467][ T72] netlink_unicast+0x449/0x710 [ 3391.344467][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.344467][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.344467][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.344467][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.344467][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.344467][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.344467][ T72] [ 3391.346143][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3391.346411][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3391.346411][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.346411][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.346411][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.346411][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.346411][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.346411][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.346411][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.346411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.346411][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.346411][ T72] netlink_unicast+0x449/0x710 [ 3391.346411][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.346411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.346411][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.346411][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.346411][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.346411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.346411][ T72] [ 3391.348404][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3391.348404][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.348404][ T72] ipv6_find_idev+0x102/0x170 [ 3391.348404][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.348404][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.348404][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.348404][ T72] netlink_unicast+0x449/0x710 [ 3391.348404][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.348404][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.348404][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.348404][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.348404][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.348404][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.348404][ T72] [ 3391.349933][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3391.349933][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.349933][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.349933][ T72] ipv6_find_idev+0x102/0x170 [ 3391.349933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.349933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.349933][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.349933][ T72] netlink_unicast+0x449/0x710 [ 3391.349933][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.349933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.349933][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.349933][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.349933][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.349933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.349933][ T72] [ 3391.351617][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3391.351892][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3391.351892][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.351892][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.351892][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.351892][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.351892][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.351892][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.351892][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.351892][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.351892][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.351892][ T72] netlink_unicast+0x449/0x710 [ 3391.351892][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.351892][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.351892][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.351892][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.351892][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.351892][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.351892][ T72] [ 3391.353891][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3391.353891][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.353891][ T72] ipv6_find_idev+0x102/0x170 [ 3391.353891][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.353891][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.353891][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.353891][ T72] netlink_unicast+0x449/0x710 [ 3391.353891][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.353891][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.353891][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.353891][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.353891][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.353891][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.353891][ T72] [ 3391.355427][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3391.355427][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.355427][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.355427][ T72] ipv6_find_idev+0x102/0x170 [ 3391.355427][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.355427][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.355427][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.355427][ T72] netlink_unicast+0x449/0x710 [ 3391.355427][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.355427][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.355427][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.355427][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.355427][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.355427][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.355427][ T72] [ 3391.357103][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3391.357367][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3391.357367][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.357367][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.357367][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.357367][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.357367][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.357367][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.357367][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.357367][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.357367][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.357367][ T72] netlink_unicast+0x449/0x710 [ 3391.357367][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.357367][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.357367][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.357367][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.357367][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.357367][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.357367][ T72] [ 3391.359345][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3391.359345][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.359345][ T72] ipv6_find_idev+0x102/0x170 [ 3391.359345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.359345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.359345][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.359345][ T72] netlink_unicast+0x449/0x710 [ 3391.359345][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.359345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.359345][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.359345][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.359345][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.359345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.359345][ T72] [ 3391.360878][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3391.360878][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.360878][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.360878][ T72] ipv6_find_idev+0x102/0x170 [ 3391.360878][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.360878][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.360878][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.360878][ T72] netlink_unicast+0x449/0x710 [ 3391.360878][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.360878][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.360878][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.360878][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.360878][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.360878][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.360878][ T72] [ 3391.362930][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3391.363238][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3391.363238][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.363238][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.363238][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.363238][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.363238][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.363238][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.363238][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.363238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.363238][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.363238][ T72] netlink_unicast+0x449/0x710 [ 3391.363238][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.363238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.363238][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.363238][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.363238][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.363238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.363238][ T72] [ 3391.365408][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3391.365408][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.365408][ T72] ipv6_find_idev+0x102/0x170 [ 3391.365408][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.365408][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.365408][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.365408][ T72] netlink_unicast+0x449/0x710 [ 3391.365408][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.365408][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.365408][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.365408][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.365408][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.365408][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.365408][ T72] [ 3391.367114][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3391.367114][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.367114][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.367114][ T72] ipv6_find_idev+0x102/0x170 [ 3391.367114][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.367114][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.367114][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.367114][ T72] netlink_unicast+0x449/0x710 [ 3391.367114][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.367114][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.367114][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.367114][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.367114][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.367114][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.367114][ T72] [ 3391.369020][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3391.369325][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3391.369325][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.369325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.369325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.369325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.369325][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.369325][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.369325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.369325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.369325][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.369325][ T72] netlink_unicast+0x449/0x710 [ 3391.369325][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.369325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.369325][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.369325][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.369325][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.369325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.369325][ T72] [ 3391.371503][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3391.371503][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.371503][ T72] ipv6_find_idev+0x102/0x170 [ 3391.371503][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.371503][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.371503][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.371503][ T72] netlink_unicast+0x449/0x710 [ 3391.371503][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.371503][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.371503][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.371503][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.371503][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.371503][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.371503][ T72] [ 3391.373266][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3391.373266][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.373266][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.373266][ T72] ipv6_find_idev+0x102/0x170 [ 3391.373266][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.373266][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.373266][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.373266][ T72] netlink_unicast+0x449/0x710 [ 3391.373266][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.373266][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.373266][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.373266][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.373266][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.373266][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.373266][ T72] [ 3391.375163][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3391.375482][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3391.375482][ T72] netdev_get_by_index+0x5e/0x80 [ 3391.375482][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3391.375482][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3391.375482][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3391.375482][ T72] ipv6_add_addr+0x411/0x2000 [ 3391.375482][ T72] inet6_addr_add+0x30e/0xa40 [ 3391.375482][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3391.375482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.375482][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.375482][ T72] netlink_unicast+0x449/0x710 [ 3391.375482][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.375482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.375482][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.375482][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.375482][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.375482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.375482][ T72] [ 3391.377649][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3391.377649][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3391.377649][ T72] ipv6_find_idev+0x102/0x170 [ 3391.377649][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.377649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.377649][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.377649][ T72] netlink_unicast+0x449/0x710 [ 3391.377649][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.377649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.377649][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.377649][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.377649][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.377649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.377649][ T72] [ 3391.379357][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3391.379357][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3391.379357][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3391.379357][ T72] ipv6_find_idev+0x102/0x170 [ 3391.379357][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3391.379357][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3391.379357][ T72] netlink_rcv_skb+0x130/0x360 [ 3391.379357][ T72] netlink_unicast+0x449/0x710 [ 3391.379357][ T72] netlink_sendmsg+0x723/0xbe0 [ 3391.379357][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3391.379357][ T72] ___sys_sendmsg+0xee/0x170 [ 3391.379357][ T72] __sys_sendmsg+0xcd/0x170 [ 3391.379357][ T72] do_syscall_64+0xc6/0x1e0 [ 3391.379357][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3391.379357][ T72] [ 3401.382791][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3401.383281][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3401.383281][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.383281][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.383281][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.383281][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.383281][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.383281][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.383281][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.383281][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.383281][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.383281][ T72] netlink_unicast+0x449/0x710 [ 3401.383281][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.383281][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.383281][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.383281][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.383281][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.383281][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.383281][ T72] [ 3401.385305][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3401.385305][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.385305][ T72] ipv6_find_idev+0x102/0x170 [ 3401.385305][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.385305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.385305][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.385305][ T72] netlink_unicast+0x449/0x710 [ 3401.385305][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.385305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.385305][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.385305][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.385305][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.385305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.385305][ T72] [ 3401.386839][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3401.386839][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.386839][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.386839][ T72] ipv6_find_idev+0x102/0x170 [ 3401.386839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.386839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.386839][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.386839][ T72] netlink_unicast+0x449/0x710 [ 3401.386839][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.386839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.386839][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.386839][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.386839][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.386839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.386839][ T72] [ 3401.388537][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3401.388829][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3401.388829][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.388829][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.388829][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.388829][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.388829][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.388829][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.388829][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.388829][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.388829][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.388829][ T72] netlink_unicast+0x449/0x710 [ 3401.388829][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.388829][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.388829][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.388829][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.388829][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.388829][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.388829][ T72] [ 3401.390809][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3401.390809][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.390809][ T72] ipv6_find_idev+0x102/0x170 [ 3401.390809][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.390809][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.390809][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.390809][ T72] netlink_unicast+0x449/0x710 [ 3401.390809][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.390809][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.390809][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.390809][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.390809][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.390809][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.390809][ T72] [ 3401.392338][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3401.392338][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.392338][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.392338][ T72] ipv6_find_idev+0x102/0x170 [ 3401.392338][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.392338][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.392338][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.392338][ T72] netlink_unicast+0x449/0x710 [ 3401.392338][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.392338][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.392338][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.392338][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.392338][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.392338][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.392338][ T72] [ 3401.394019][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3401.394287][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3401.394287][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.394287][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.394287][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.394287][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.394287][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.394287][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.394287][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.394287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.394287][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.394287][ T72] netlink_unicast+0x449/0x710 [ 3401.394287][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.394287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.394287][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.394287][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.394287][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.394287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.394287][ T72] [ 3401.396292][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3401.396292][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.396292][ T72] ipv6_find_idev+0x102/0x170 [ 3401.396292][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.396292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.396292][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.396292][ T72] netlink_unicast+0x449/0x710 [ 3401.396292][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.396292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.396292][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.396292][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.396292][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.396292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.396292][ T72] [ 3401.397820][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3401.397820][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.397820][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.397820][ T72] ipv6_find_idev+0x102/0x170 [ 3401.397820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.397820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.397820][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.397820][ T72] netlink_unicast+0x449/0x710 [ 3401.397820][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.397820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.397820][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.397820][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.397820][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.397820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.397820][ T72] [ 3401.399495][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3401.399765][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3401.399765][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.399765][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.399765][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.399765][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.399765][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.399765][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.399765][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.399765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.399765][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.399765][ T72] netlink_unicast+0x449/0x710 [ 3401.399765][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.399765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.399765][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.399765][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.399765][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.399765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.399765][ T72] [ 3401.401848][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3401.401848][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.401848][ T72] ipv6_find_idev+0x102/0x170 [ 3401.401848][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.401848][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.401848][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.401848][ T72] netlink_unicast+0x449/0x710 [ 3401.401848][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.401848][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.401848][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.401848][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.401848][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.401848][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.401848][ T72] [ 3401.403383][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3401.403383][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.403383][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.403383][ T72] ipv6_find_idev+0x102/0x170 [ 3401.403383][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.403383][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.403383][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.403383][ T72] netlink_unicast+0x449/0x710 [ 3401.403383][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.403383][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.403383][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.403383][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.403383][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.403383][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.403383][ T72] [ 3401.405505][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3401.406123][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3401.406123][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.406123][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.406123][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.406123][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.406123][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.406123][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.406123][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.406123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.406123][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.406123][ T72] netlink_unicast+0x449/0x710 [ 3401.406123][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.406123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.406123][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.406123][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.406123][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.406123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.406123][ T72] [ 3401.408102][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3401.408102][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.408102][ T72] ipv6_find_idev+0x102/0x170 [ 3401.408102][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.408102][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.408102][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.408102][ T72] netlink_unicast+0x449/0x710 [ 3401.408102][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.408102][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.408102][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.408102][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.408102][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.408102][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.408102][ T72] [ 3401.409629][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3401.409629][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.409629][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.409629][ T72] ipv6_find_idev+0x102/0x170 [ 3401.409629][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.409629][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.409629][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.409629][ T72] netlink_unicast+0x449/0x710 [ 3401.409629][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.409629][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.409629][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.409629][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.409629][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.409629][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.409629][ T72] [ 3401.411305][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3401.411570][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3401.411570][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.411570][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.411570][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.411570][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.411570][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.411570][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.411570][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.411570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.411570][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.411570][ T72] netlink_unicast+0x449/0x710 [ 3401.411570][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.411570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.411570][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.411570][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.411570][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.411570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.411570][ T72] [ 3401.413570][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3401.413570][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.413570][ T72] ipv6_find_idev+0x102/0x170 [ 3401.413570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.413570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.413570][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.413570][ T72] netlink_unicast+0x449/0x710 [ 3401.413570][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.413570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.413570][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.413570][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.413570][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.413570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.413570][ T72] [ 3401.415174][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3401.415174][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.415174][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.415174][ T72] ipv6_find_idev+0x102/0x170 [ 3401.415174][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.415174][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.415174][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.415174][ T72] netlink_unicast+0x449/0x710 [ 3401.415174][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.415174][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.415174][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.415174][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.415174][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.415174][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.415174][ T72] [ 3401.417206][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3401.417515][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3401.417515][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.417515][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.417515][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.417515][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.417515][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.417515][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.417515][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.417515][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.417515][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.417515][ T72] netlink_unicast+0x449/0x710 [ 3401.417515][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.417515][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.417515][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.417515][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.417515][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.417515][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.417515][ T72] [ 3401.419677][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3401.419677][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.419677][ T72] ipv6_find_idev+0x102/0x170 [ 3401.419677][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.419677][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.419677][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.419677][ T72] netlink_unicast+0x449/0x710 [ 3401.419677][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.419677][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.419677][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.419677][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.419677][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.419677][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.419677][ T72] [ 3401.421394][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3401.421394][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.421394][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.421394][ T72] ipv6_find_idev+0x102/0x170 [ 3401.421394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.421394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.421394][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.421394][ T72] netlink_unicast+0x449/0x710 [ 3401.421394][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.421394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.421394][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.421394][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.421394][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.421394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.421394][ T72] [ 3401.423295][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3401.423600][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3401.423600][ T72] netdev_get_by_index+0x5e/0x80 [ 3401.423600][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3401.423600][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3401.423600][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3401.423600][ T72] ipv6_add_addr+0x411/0x2000 [ 3401.423600][ T72] inet6_addr_add+0x30e/0xa40 [ 3401.423600][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3401.423600][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.423600][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.423600][ T72] netlink_unicast+0x449/0x710 [ 3401.423600][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.423600][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.423600][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.423600][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.423600][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.423600][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.423600][ T72] [ 3401.425773][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3401.425773][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3401.425773][ T72] ipv6_find_idev+0x102/0x170 [ 3401.425773][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.425773][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.425773][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.425773][ T72] netlink_unicast+0x449/0x710 [ 3401.425773][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.425773][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.425773][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.425773][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.425773][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.425773][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.425773][ T72] [ 3401.427538][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3401.427538][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3401.427538][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3401.427538][ T72] ipv6_find_idev+0x102/0x170 [ 3401.427538][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3401.427538][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3401.427538][ T72] netlink_rcv_skb+0x130/0x360 [ 3401.427538][ T72] netlink_unicast+0x449/0x710 [ 3401.427538][ T72] netlink_sendmsg+0x723/0xbe0 [ 3401.427538][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3401.427538][ T72] ___sys_sendmsg+0xee/0x170 [ 3401.427538][ T72] __sys_sendmsg+0xcd/0x170 [ 3401.427538][ T72] do_syscall_64+0xc6/0x1e0 [ 3401.427538][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3401.427538][ T72] [ 3411.662862][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3411.663271][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3411.663271][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.663271][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.663271][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.663271][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.663271][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.663271][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.663271][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.663271][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.663271][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.663271][ T72] netlink_unicast+0x449/0x710 [ 3411.663271][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.663271][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.663271][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.663271][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.663271][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.663271][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.663271][ T72] [ 3411.665278][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3411.665278][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.665278][ T72] ipv6_find_idev+0x102/0x170 [ 3411.665278][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.665278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.665278][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.665278][ T72] netlink_unicast+0x449/0x710 [ 3411.665278][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.665278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.665278][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.665278][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.665278][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.665278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.665278][ T72] [ 3411.666803][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3411.666803][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.666803][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.666803][ T72] ipv6_find_idev+0x102/0x170 [ 3411.666803][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.666803][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.666803][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.666803][ T72] netlink_unicast+0x449/0x710 [ 3411.666803][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.666803][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.666803][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.666803][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.666803][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.666803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.666803][ T72] [ 3411.668494][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3411.668770][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3411.668770][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.668770][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.668770][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.668770][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.668770][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.668770][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.668770][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.668770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.668770][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.668770][ T72] netlink_unicast+0x449/0x710 [ 3411.668770][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.668770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.668770][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.668770][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.668770][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.668770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.668770][ T72] [ 3411.670740][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3411.670740][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.670740][ T72] ipv6_find_idev+0x102/0x170 [ 3411.670740][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.670740][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.670740][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.670740][ T72] netlink_unicast+0x449/0x710 [ 3411.670740][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.670740][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.670740][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.670740][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.670740][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.670740][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.670740][ T72] [ 3411.672265][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3411.672265][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.672265][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.672265][ T72] ipv6_find_idev+0x102/0x170 [ 3411.672265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.672265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.672265][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.672265][ T72] netlink_unicast+0x449/0x710 [ 3411.672265][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.672265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.672265][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.672265][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.672265][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.672265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.672265][ T72] [ 3411.673932][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3411.674194][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3411.674194][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.674194][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.674194][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.674194][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.674194][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.674194][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.674194][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.674194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.674194][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.674194][ T72] netlink_unicast+0x449/0x710 [ 3411.674194][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.674194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.674194][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.674194][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.674194][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.674194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.674194][ T72] [ 3411.676184][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3411.676184][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.676184][ T72] ipv6_find_idev+0x102/0x170 [ 3411.676184][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.676184][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.676184][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.676184][ T72] netlink_unicast+0x449/0x710 [ 3411.676184][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.676184][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.676184][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.676184][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.676184][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.676184][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.676184][ T72] [ 3411.677710][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3411.677710][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.677710][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.677710][ T72] ipv6_find_idev+0x102/0x170 [ 3411.677710][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.677710][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.677710][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.677710][ T72] netlink_unicast+0x449/0x710 [ 3411.677710][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.677710][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.677710][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.677710][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.677710][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.677710][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.677710][ T72] [ 3411.679377][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3411.679639][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3411.679639][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.679639][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.679639][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.679639][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.679639][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.679639][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.679639][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.679639][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.679639][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.679639][ T72] netlink_unicast+0x449/0x710 [ 3411.679639][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.679639][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.679639][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.679639][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.679639][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.679639][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.679639][ T72] [ 3411.681609][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3411.681609][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.681609][ T72] ipv6_find_idev+0x102/0x170 [ 3411.681609][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.681609][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.681609][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.681609][ T72] netlink_unicast+0x449/0x710 [ 3411.681609][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.681609][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.681609][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.681609][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.681609][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.681609][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.681609][ T72] [ 3411.683127][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3411.683127][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.683127][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.683127][ T72] ipv6_find_idev+0x102/0x170 [ 3411.683127][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.683127][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.683127][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.683127][ T72] netlink_unicast+0x449/0x710 [ 3411.683127][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.683127][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.683127][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.683127][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.683127][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.683127][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.683127][ T72] [ 3411.685205][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3411.685472][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3411.685472][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.685472][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.685472][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.685472][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.685472][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.685472][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.685472][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.685472][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.685472][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.685472][ T72] netlink_unicast+0x449/0x710 [ 3411.685472][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.685472][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.685472][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.685472][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.685472][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.685472][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.685472][ T72] [ 3411.687442][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3411.687442][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.687442][ T72] ipv6_find_idev+0x102/0x170 [ 3411.687442][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.687442][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.687442][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.687442][ T72] netlink_unicast+0x449/0x710 [ 3411.687442][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.687442][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.687442][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.687442][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.687442][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.687442][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.687442][ T72] [ 3411.688951][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3411.688951][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.688951][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.688951][ T72] ipv6_find_idev+0x102/0x170 [ 3411.688951][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.688951][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.688951][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.688951][ T72] netlink_unicast+0x449/0x710 [ 3411.688951][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.688951][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.688951][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.688951][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.688951][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.688951][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.688951][ T72] [ 3411.690656][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3411.690979][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3411.690979][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.690979][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.690979][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.690979][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.690979][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.690979][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.690979][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.690979][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.690979][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.690979][ T72] netlink_unicast+0x449/0x710 [ 3411.690979][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.690979][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.690979][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.690979][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.690979][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.690979][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.690979][ T72] [ 3411.693103][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3411.693103][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.693103][ T72] ipv6_find_idev+0x102/0x170 [ 3411.693103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.693103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.693103][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.693103][ T72] netlink_unicast+0x449/0x710 [ 3411.693103][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.693103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.693103][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.693103][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.693103][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.693103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.693103][ T72] [ 3411.694815][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3411.694815][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.694815][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.694815][ T72] ipv6_find_idev+0x102/0x170 [ 3411.694815][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.694815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.694815][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.694815][ T72] netlink_unicast+0x449/0x710 [ 3411.694815][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.694815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.694815][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.694815][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.694815][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.694815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.694815][ T72] [ 3411.696780][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3411.697039][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3411.697039][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.697039][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.697039][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.697039][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.697039][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.697039][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.697039][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.697039][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.697039][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.697039][ T72] netlink_unicast+0x449/0x710 [ 3411.697039][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.697039][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.697039][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.697039][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.697039][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.697039][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.697039][ T72] [ 3411.699248][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3411.699248][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.699248][ T72] ipv6_find_idev+0x102/0x170 [ 3411.699248][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.699248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.699248][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.699248][ T72] netlink_unicast+0x449/0x710 [ 3411.699248][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.699248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.699248][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.699248][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.699248][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.699248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.699248][ T72] [ 3411.700955][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3411.700955][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.700955][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.700955][ T72] ipv6_find_idev+0x102/0x170 [ 3411.700955][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.700955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.700955][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.700955][ T72] netlink_unicast+0x449/0x710 [ 3411.700955][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.700955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.700955][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.700955][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.700955][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.700955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.700955][ T72] [ 3411.702837][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3411.703098][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3411.703098][ T72] netdev_get_by_index+0x5e/0x80 [ 3411.703098][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3411.703098][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3411.703098][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3411.703098][ T72] ipv6_add_addr+0x411/0x2000 [ 3411.703098][ T72] inet6_addr_add+0x30e/0xa40 [ 3411.703098][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3411.703098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.703098][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.703098][ T72] netlink_unicast+0x449/0x710 [ 3411.703098][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.703098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.703098][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.703098][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.703098][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.703098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.703098][ T72] [ 3411.705280][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3411.705280][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3411.705280][ T72] ipv6_find_idev+0x102/0x170 [ 3411.705280][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.705280][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.705280][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.705280][ T72] netlink_unicast+0x449/0x710 [ 3411.705280][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.705280][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.705280][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.705280][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.705280][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.705280][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.705280][ T72] [ 3411.707046][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3411.707046][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3411.707046][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3411.707046][ T72] ipv6_find_idev+0x102/0x170 [ 3411.707046][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3411.707046][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3411.707046][ T72] netlink_rcv_skb+0x130/0x360 [ 3411.707046][ T72] netlink_unicast+0x449/0x710 [ 3411.707046][ T72] netlink_sendmsg+0x723/0xbe0 [ 3411.707046][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3411.707046][ T72] ___sys_sendmsg+0xee/0x170 [ 3411.707046][ T72] __sys_sendmsg+0xcd/0x170 [ 3411.707046][ T72] do_syscall_64+0xc6/0x1e0 [ 3411.707046][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3411.707046][ T72] [ 3421.958779][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3421.959195][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3421.959195][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.959195][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.959195][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.959195][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.959195][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.959195][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.959195][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.959195][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.959195][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.959195][ T72] netlink_unicast+0x449/0x710 [ 3421.959195][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.959195][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.959195][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.959195][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.959195][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.959195][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.959195][ T72] [ 3421.961325][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3421.961325][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3421.961325][ T72] ipv6_find_idev+0x102/0x170 [ 3421.961325][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.961325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.961325][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.961325][ T72] netlink_unicast+0x449/0x710 [ 3421.961325][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.961325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.961325][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.961325][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.961325][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.961325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.961325][ T72] [ 3421.962853][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3421.962853][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3421.962853][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3421.962853][ T72] ipv6_find_idev+0x102/0x170 [ 3421.962853][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.962853][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.962853][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.962853][ T72] netlink_unicast+0x449/0x710 [ 3421.962853][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.962853][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.962853][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.962853][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.962853][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.962853][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.962853][ T72] [ 3421.964538][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3421.964818][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3421.964818][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.964818][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.964818][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.964818][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.964818][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.964818][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.964818][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.964818][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.964818][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.964818][ T72] netlink_unicast+0x449/0x710 [ 3421.964818][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.964818][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.964818][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.964818][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.964818][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.964818][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.964818][ T72] [ 3421.966802][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3421.966802][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3421.966802][ T72] ipv6_find_idev+0x102/0x170 [ 3421.966802][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.966802][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.966802][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.966802][ T72] netlink_unicast+0x449/0x710 [ 3421.966802][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.966802][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.966802][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.966802][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.966802][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.966802][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.966802][ T72] [ 3421.968325][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3421.968325][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3421.968325][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3421.968325][ T72] ipv6_find_idev+0x102/0x170 [ 3421.968325][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.968325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.968325][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.968325][ T72] netlink_unicast+0x449/0x710 [ 3421.968325][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.968325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.968325][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.968325][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.968325][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.968325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.968325][ T72] [ 3421.969999][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3421.970269][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3421.970269][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.970269][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.970269][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.970269][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.970269][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.970269][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.970269][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.970269][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.970269][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.970269][ T72] netlink_unicast+0x449/0x710 [ 3421.970269][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.970269][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.970269][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.970269][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.970269][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.970269][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.970269][ T72] [ 3421.972260][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3421.972260][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3421.972260][ T72] ipv6_find_idev+0x102/0x170 [ 3421.972260][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.972260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.972260][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.972260][ T72] netlink_unicast+0x449/0x710 [ 3421.972260][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.972260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.972260][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.972260][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.972260][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.972260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.972260][ T72] [ 3421.973790][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3421.973790][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3421.973790][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3421.973790][ T72] ipv6_find_idev+0x102/0x170 [ 3421.973790][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.973790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.973790][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.973790][ T72] netlink_unicast+0x449/0x710 [ 3421.973790][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.973790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.973790][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.973790][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.973790][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.973790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.973790][ T72] [ 3421.975490][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3421.975758][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3421.975758][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.975758][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.975758][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.975758][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.975758][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.975758][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.975758][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.975758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.975758][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.975758][ T72] netlink_unicast+0x449/0x710 [ 3421.975758][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.975758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.975758][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.975758][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.975758][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.975758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.975758][ T72] [ 3421.977733][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3421.977733][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3421.977733][ T72] ipv6_find_idev+0x102/0x170 [ 3421.977733][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.977733][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.977733][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.977733][ T72] netlink_unicast+0x449/0x710 [ 3421.977733][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.977733][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.977733][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.977733][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.977733][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.977733][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.977733][ T72] [ 3421.979256][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3421.979256][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3421.979256][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3421.979256][ T72] ipv6_find_idev+0x102/0x170 [ 3421.979256][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.979256][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.979256][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.979256][ T72] netlink_unicast+0x449/0x710 [ 3421.979256][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.979256][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.979256][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.979256][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.979256][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.979256][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.979256][ T72] [ 3421.981323][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3421.981923][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3421.981923][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.981923][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.981923][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.981923][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.981923][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.981923][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.981923][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.981923][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.981923][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.981923][ T72] netlink_unicast+0x449/0x710 [ 3421.981923][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.981923][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.981923][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.981923][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.981923][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.981923][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.981923][ T72] [ 3421.983908][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3421.983908][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3421.983908][ T72] ipv6_find_idev+0x102/0x170 [ 3421.983908][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.983908][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.983908][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.983908][ T72] netlink_unicast+0x449/0x710 [ 3421.983908][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.983908][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.983908][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.983908][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.983908][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.983908][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.983908][ T72] [ 3421.985464][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3421.985464][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3421.985464][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3421.985464][ T72] ipv6_find_idev+0x102/0x170 [ 3421.985464][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.985464][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.985464][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.985464][ T72] netlink_unicast+0x449/0x710 [ 3421.985464][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.985464][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.985464][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.985464][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.985464][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.985464][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.985464][ T72] [ 3421.987162][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3421.987428][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3421.987428][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.987428][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.987428][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.987428][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.987428][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.987428][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.987428][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.987428][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.987428][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.987428][ T72] netlink_unicast+0x449/0x710 [ 3421.987428][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.987428][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.987428][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.987428][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.987428][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.987428][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.987428][ T72] [ 3421.989424][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3421.989424][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3421.989424][ T72] ipv6_find_idev+0x102/0x170 [ 3421.989424][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.989424][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.989424][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.989424][ T72] netlink_unicast+0x449/0x710 [ 3421.989424][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.989424][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.989424][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.989424][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.989424][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.989424][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.989424][ T72] [ 3421.991032][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3421.991032][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3421.991032][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3421.991032][ T72] ipv6_find_idev+0x102/0x170 [ 3421.991032][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.991032][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.991032][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.991032][ T72] netlink_unicast+0x449/0x710 [ 3421.991032][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.991032][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.991032][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.991032][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.991032][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.991032][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.991032][ T72] [ 3421.992901][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3421.993208][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3421.993208][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.993208][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.993208][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.993208][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.993208][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.993208][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.993208][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.993208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.993208][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.993208][ T72] netlink_unicast+0x449/0x710 [ 3421.993208][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.993208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.993208][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.993208][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.993208][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.993208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.993208][ T72] [ 3421.995885][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3421.995885][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3421.995885][ T72] ipv6_find_idev+0x102/0x170 [ 3421.995885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.995885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.995885][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.995885][ T72] netlink_unicast+0x449/0x710 [ 3421.995885][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.995885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.995885][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.995885][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.995885][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.995885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.995885][ T72] [ 3421.997492][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3421.997492][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3421.997492][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3421.997492][ T72] ipv6_find_idev+0x102/0x170 [ 3421.997492][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3421.997492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.997492][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.997492][ T72] netlink_unicast+0x449/0x710 [ 3421.997492][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.997492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.997492][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.997492][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.997492][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.997492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.997492][ T72] [ 3421.999363][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3421.999689][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3421.999689][ T72] netdev_get_by_index+0x5e/0x80 [ 3421.999689][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3421.999689][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3421.999689][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3421.999689][ T72] ipv6_add_addr+0x411/0x2000 [ 3421.999689][ T72] inet6_addr_add+0x30e/0xa40 [ 3421.999689][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3421.999689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3421.999689][ T72] netlink_rcv_skb+0x130/0x360 [ 3421.999689][ T72] netlink_unicast+0x449/0x710 [ 3421.999689][ T72] netlink_sendmsg+0x723/0xbe0 [ 3421.999689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3421.999689][ T72] ___sys_sendmsg+0xee/0x170 [ 3421.999689][ T72] __sys_sendmsg+0xcd/0x170 [ 3421.999689][ T72] do_syscall_64+0xc6/0x1e0 [ 3421.999689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3421.999689][ T72] [ 3422.002151][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3422.002151][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3422.002151][ T72] ipv6_find_idev+0x102/0x170 [ 3422.002151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3422.002151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3422.002151][ T72] netlink_rcv_skb+0x130/0x360 [ 3422.002151][ T72] netlink_unicast+0x449/0x710 [ 3422.002151][ T72] netlink_sendmsg+0x723/0xbe0 [ 3422.002151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3422.002151][ T72] ___sys_sendmsg+0xee/0x170 [ 3422.002151][ T72] __sys_sendmsg+0xcd/0x170 [ 3422.002151][ T72] do_syscall_64+0xc6/0x1e0 [ 3422.002151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3422.002151][ T72] [ 3422.003846][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3422.003846][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3422.003846][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3422.003846][ T72] ipv6_find_idev+0x102/0x170 [ 3422.003846][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3422.003846][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3422.003846][ T72] netlink_rcv_skb+0x130/0x360 [ 3422.003846][ T72] netlink_unicast+0x449/0x710 [ 3422.003846][ T72] netlink_sendmsg+0x723/0xbe0 [ 3422.003846][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3422.003846][ T72] ___sys_sendmsg+0xee/0x170 [ 3422.003846][ T72] __sys_sendmsg+0xcd/0x170 [ 3422.003846][ T72] do_syscall_64+0xc6/0x1e0 [ 3422.003846][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3422.003846][ T72] [ 3432.102923][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3432.103330][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3432.103330][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.103330][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.103330][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.103330][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.103330][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.103330][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.103330][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.103330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.103330][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.103330][ T72] netlink_unicast+0x449/0x710 [ 3432.103330][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.103330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.103330][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.103330][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.103330][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.103330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.103330][ T72] [ 3432.105352][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3432.105352][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.105352][ T72] ipv6_find_idev+0x102/0x170 [ 3432.105352][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.105352][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.105352][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.105352][ T72] netlink_unicast+0x449/0x710 [ 3432.105352][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.105352][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.105352][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.105352][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.105352][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.105352][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.105352][ T72] [ 3432.106869][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3432.106869][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.106869][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.106869][ T72] ipv6_find_idev+0x102/0x170 [ 3432.106869][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.106869][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.106869][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.106869][ T72] netlink_unicast+0x449/0x710 [ 3432.106869][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.106869][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.106869][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.106869][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.106869][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.106869][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.106869][ T72] [ 3432.108534][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3432.108815][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3432.108815][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.108815][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.108815][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.108815][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.108815][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.108815][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.108815][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.108815][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.108815][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.108815][ T72] netlink_unicast+0x449/0x710 [ 3432.108815][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.108815][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.108815][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.108815][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.108815][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.108815][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.108815][ T72] [ 3432.110789][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3432.110789][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.110789][ T72] ipv6_find_idev+0x102/0x170 [ 3432.110789][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.110789][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.110789][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.110789][ T72] netlink_unicast+0x449/0x710 [ 3432.110789][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.110789][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.110789][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.110789][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.110789][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.110789][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.110789][ T72] [ 3432.112688][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3432.112688][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.112688][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.112688][ T72] ipv6_find_idev+0x102/0x170 [ 3432.112688][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.112688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.112688][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.112688][ T72] netlink_unicast+0x449/0x710 [ 3432.112688][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.112688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.112688][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.112688][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.112688][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.112688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.112688][ T72] [ 3432.114351][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3432.114616][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3432.114616][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.114616][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.114616][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.114616][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.114616][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.114616][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.114616][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.114616][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.114616][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.114616][ T72] netlink_unicast+0x449/0x710 [ 3432.114616][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.114616][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.114616][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.114616][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.114616][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.114616][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.114616][ T72] [ 3432.116581][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3432.116581][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.116581][ T72] ipv6_find_idev+0x102/0x170 [ 3432.116581][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.116581][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.116581][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.116581][ T72] netlink_unicast+0x449/0x710 [ 3432.116581][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.116581][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.116581][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.116581][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.116581][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.116581][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.116581][ T72] [ 3432.118099][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3432.118099][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.118099][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.118099][ T72] ipv6_find_idev+0x102/0x170 [ 3432.118099][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.118099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.118099][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.118099][ T72] netlink_unicast+0x449/0x710 [ 3432.118099][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.118099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.118099][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.118099][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.118099][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.118099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.118099][ T72] [ 3432.119755][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3432.120018][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3432.120018][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.120018][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.120018][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.120018][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.120018][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.120018][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.120018][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.120018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.120018][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.120018][ T72] netlink_unicast+0x449/0x710 [ 3432.120018][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.120018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.120018][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.120018][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.120018][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.120018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.120018][ T72] [ 3432.121997][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3432.121997][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.121997][ T72] ipv6_find_idev+0x102/0x170 [ 3432.121997][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.121997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.121997][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.121997][ T72] netlink_unicast+0x449/0x710 [ 3432.121997][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.121997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.121997][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.121997][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.121997][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.121997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.121997][ T72] [ 3432.123513][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3432.123513][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.123513][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.123513][ T72] ipv6_find_idev+0x102/0x170 [ 3432.123513][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.123513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.123513][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.123513][ T72] netlink_unicast+0x449/0x710 [ 3432.123513][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.123513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.123513][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.123513][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.123513][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.123513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.123513][ T72] [ 3432.125580][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3432.126174][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3432.126174][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.126174][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.126174][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.126174][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.126174][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.126174][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.126174][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.126174][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.126174][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.126174][ T72] netlink_unicast+0x449/0x710 [ 3432.126174][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.126174][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.126174][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.126174][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.126174][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.126174][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.126174][ T72] [ 3432.128128][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3432.128128][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.128128][ T72] ipv6_find_idev+0x102/0x170 [ 3432.128128][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.128128][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.128128][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.128128][ T72] netlink_unicast+0x449/0x710 [ 3432.128128][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.128128][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.128128][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.128128][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.128128][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.128128][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.128128][ T72] [ 3432.129647][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3432.129647][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.129647][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.129647][ T72] ipv6_find_idev+0x102/0x170 [ 3432.129647][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.129647][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.129647][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.129647][ T72] netlink_unicast+0x449/0x710 [ 3432.129647][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.129647][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.129647][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.129647][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.129647][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.129647][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.129647][ T72] [ 3432.131298][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3432.131563][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3432.131563][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.131563][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.131563][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.131563][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.131563][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.131563][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.131563][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.131563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.131563][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.131563][ T72] netlink_unicast+0x449/0x710 [ 3432.131563][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.131563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.131563][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.131563][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.131563][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.131563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.131563][ T72] [ 3432.133523][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3432.133523][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.133523][ T72] ipv6_find_idev+0x102/0x170 [ 3432.133523][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.133523][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.133523][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.133523][ T72] netlink_unicast+0x449/0x710 [ 3432.133523][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.133523][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.133523][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.133523][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.133523][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.133523][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.133523][ T72] [ 3432.135104][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3432.135104][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.135104][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.135104][ T72] ipv6_find_idev+0x102/0x170 [ 3432.135104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.135104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.135104][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.135104][ T72] netlink_unicast+0x449/0x710 [ 3432.135104][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.135104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.135104][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.135104][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.135104][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.135104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.135104][ T72] [ 3432.137035][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3432.137292][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3432.137292][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.137292][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.137292][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.137292][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.137292][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.137292][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.137292][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.137292][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.137292][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.137292][ T72] netlink_unicast+0x449/0x710 [ 3432.137292][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.137292][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.137292][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.137292][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.137292][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.137292][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.137292][ T72] [ 3432.139528][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3432.139528][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.139528][ T72] ipv6_find_idev+0x102/0x170 [ 3432.139528][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.139528][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.139528][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.139528][ T72] netlink_unicast+0x449/0x710 [ 3432.139528][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.139528][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.139528][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.139528][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.139528][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.139528][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.139528][ T72] [ 3432.141233][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3432.141233][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.141233][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.141233][ T72] ipv6_find_idev+0x102/0x170 [ 3432.141233][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.141233][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.141233][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.141233][ T72] netlink_unicast+0x449/0x710 [ 3432.141233][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.141233][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.141233][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.141233][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.141233][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.141233][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.141233][ T72] [ 3432.143115][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3432.143373][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3432.143373][ T72] netdev_get_by_index+0x5e/0x80 [ 3432.143373][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3432.143373][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3432.143373][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3432.143373][ T72] ipv6_add_addr+0x411/0x2000 [ 3432.143373][ T72] inet6_addr_add+0x30e/0xa40 [ 3432.143373][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3432.143373][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.143373][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.143373][ T72] netlink_unicast+0x449/0x710 [ 3432.143373][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.143373][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.143373][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.143373][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.143373][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.143373][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.143373][ T72] [ 3432.145587][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3432.145587][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3432.145587][ T72] ipv6_find_idev+0x102/0x170 [ 3432.145587][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.145587][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.145587][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.145587][ T72] netlink_unicast+0x449/0x710 [ 3432.145587][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.145587][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.145587][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.145587][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.145587][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.145587][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.145587][ T72] [ 3432.147300][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3432.147300][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3432.147300][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3432.147300][ T72] ipv6_find_idev+0x102/0x170 [ 3432.147300][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3432.147300][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3432.147300][ T72] netlink_rcv_skb+0x130/0x360 [ 3432.147300][ T72] netlink_unicast+0x449/0x710 [ 3432.147300][ T72] netlink_sendmsg+0x723/0xbe0 [ 3432.147300][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3432.147300][ T72] ___sys_sendmsg+0xee/0x170 [ 3432.147300][ T72] __sys_sendmsg+0xcd/0x170 [ 3432.147300][ T72] do_syscall_64+0xc6/0x1e0 [ 3432.147300][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3432.147300][ T72] [ 3442.382802][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3442.383217][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3442.383217][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.383217][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.383217][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.383217][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.383217][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.383217][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.383217][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.383217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.383217][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.383217][ T72] netlink_unicast+0x449/0x710 [ 3442.383217][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.383217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.383217][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.383217][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.383217][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.383217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.383217][ T72] [ 3442.385241][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3442.385241][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.385241][ T72] ipv6_find_idev+0x102/0x170 [ 3442.385241][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.385241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.385241][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.385241][ T72] netlink_unicast+0x449/0x710 [ 3442.385241][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.385241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.385241][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.385241][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.385241][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.385241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.385241][ T72] [ 3442.386770][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3442.386770][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.386770][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.386770][ T72] ipv6_find_idev+0x102/0x170 [ 3442.386770][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.386770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.386770][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.386770][ T72] netlink_unicast+0x449/0x710 [ 3442.386770][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.386770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.386770][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.386770][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.386770][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.386770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.386770][ T72] [ 3442.388500][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3442.388787][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3442.388787][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.388787][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.388787][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.388787][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.388787][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.388787][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.388787][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.388787][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.388787][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.388787][ T72] netlink_unicast+0x449/0x710 [ 3442.388787][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.388787][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.388787][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.388787][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.388787][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.388787][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.388787][ T72] [ 3442.390785][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3442.390785][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.390785][ T72] ipv6_find_idev+0x102/0x170 [ 3442.390785][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.390785][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.390785][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.390785][ T72] netlink_unicast+0x449/0x710 [ 3442.390785][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.390785][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.390785][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.390785][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.390785][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.390785][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.390785][ T72] [ 3442.392321][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3442.392321][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.392321][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.392321][ T72] ipv6_find_idev+0x102/0x170 [ 3442.392321][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.392321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.392321][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.392321][ T72] netlink_unicast+0x449/0x710 [ 3442.392321][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.392321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.392321][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.392321][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.392321][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.392321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.392321][ T72] [ 3442.394057][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3442.394349][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3442.394349][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.394349][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.394349][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.394349][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.394349][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.394349][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.394349][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.394349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.394349][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.394349][ T72] netlink_unicast+0x449/0x710 [ 3442.394349][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.394349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.394349][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.394349][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.394349][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.394349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.394349][ T72] [ 3442.396435][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3442.396435][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.396435][ T72] ipv6_find_idev+0x102/0x170 [ 3442.396435][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.396435][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.396435][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.396435][ T72] netlink_unicast+0x449/0x710 [ 3442.396435][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.396435][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.396435][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.396435][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.396435][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.396435][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.396435][ T72] [ 3442.398029][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3442.398029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.398029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.398029][ T72] ipv6_find_idev+0x102/0x170 [ 3442.398029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.398029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.398029][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.398029][ T72] netlink_unicast+0x449/0x710 [ 3442.398029][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.398029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.398029][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.398029][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.398029][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.398029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.398029][ T72] [ 3442.399759][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3442.400068][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3442.400068][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.400068][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.400068][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.400068][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.400068][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.400068][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.400068][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.400068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.400068][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.400068][ T72] netlink_unicast+0x449/0x710 [ 3442.400068][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.400068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.400068][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.400068][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.400068][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.400068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.400068][ T72] [ 3442.402138][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3442.402138][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.402138][ T72] ipv6_find_idev+0x102/0x170 [ 3442.402138][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.402138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.402138][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.402138][ T72] netlink_unicast+0x449/0x710 [ 3442.402138][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.402138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.402138][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.402138][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.402138][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.402138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.402138][ T72] [ 3442.403721][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3442.403721][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.403721][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.403721][ T72] ipv6_find_idev+0x102/0x170 [ 3442.403721][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.403721][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.403721][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.403721][ T72] netlink_unicast+0x449/0x710 [ 3442.403721][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.403721][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.403721][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.403721][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.403721][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.403721][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.403721][ T72] [ 3442.405976][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3442.406248][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3442.406248][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.406248][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.406248][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.406248][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.406248][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.406248][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.406248][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.406248][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.406248][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.406248][ T72] netlink_unicast+0x449/0x710 [ 3442.406248][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.406248][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.406248][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.406248][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.406248][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.406248][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.406248][ T72] [ 3442.408240][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3442.408240][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.408240][ T72] ipv6_find_idev+0x102/0x170 [ 3442.408240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.408240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.408240][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.408240][ T72] netlink_unicast+0x449/0x710 [ 3442.408240][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.408240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.408240][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.408240][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.408240][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.408240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.408240][ T72] [ 3442.409765][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3442.409765][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.409765][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.409765][ T72] ipv6_find_idev+0x102/0x170 [ 3442.409765][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.409765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.409765][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.409765][ T72] netlink_unicast+0x449/0x710 [ 3442.409765][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.409765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.409765][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.409765][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.409765][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.409765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.409765][ T72] [ 3442.411611][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3442.411971][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3442.411971][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.411971][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.411971][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.411971][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.411971][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.411971][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.411971][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.411971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.411971][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.411971][ T72] netlink_unicast+0x449/0x710 [ 3442.411971][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.411971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.411971][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.411971][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.411971][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.411971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.411971][ T72] [ 3442.414120][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3442.414120][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.414120][ T72] ipv6_find_idev+0x102/0x170 [ 3442.414120][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.414120][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.414120][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.414120][ T72] netlink_unicast+0x449/0x710 [ 3442.414120][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.414120][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.414120][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.414120][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.414120][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.414120][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.414120][ T72] [ 3442.415883][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3442.415883][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.415883][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.415883][ T72] ipv6_find_idev+0x102/0x170 [ 3442.415883][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.415883][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.415883][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.415883][ T72] netlink_unicast+0x449/0x710 [ 3442.415883][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.415883][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.415883][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.415883][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.415883][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.415883][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.415883][ T72] [ 3442.417828][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3442.418122][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3442.418122][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.418122][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.418122][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.418122][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.418122][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.418122][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.418122][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.418122][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.418122][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.418122][ T72] netlink_unicast+0x449/0x710 [ 3442.418122][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.418122][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.418122][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.418122][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.418122][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.418122][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.418122][ T72] [ 3442.420327][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3442.420327][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.420327][ T72] ipv6_find_idev+0x102/0x170 [ 3442.420327][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.420327][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.420327][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.420327][ T72] netlink_unicast+0x449/0x710 [ 3442.420327][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.420327][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.420327][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.420327][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.420327][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.420327][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.420327][ T72] [ 3442.422069][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3442.422069][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.422069][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.422069][ T72] ipv6_find_idev+0x102/0x170 [ 3442.422069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.422069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.422069][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.422069][ T72] netlink_unicast+0x449/0x710 [ 3442.422069][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.422069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.422069][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.422069][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.422069][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.422069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.422069][ T72] [ 3442.423974][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3442.424238][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3442.424238][ T72] netdev_get_by_index+0x5e/0x80 [ 3442.424238][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3442.424238][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3442.424238][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3442.424238][ T72] ipv6_add_addr+0x411/0x2000 [ 3442.424238][ T72] inet6_addr_add+0x30e/0xa40 [ 3442.424238][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3442.424238][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.424238][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.424238][ T72] netlink_unicast+0x449/0x710 [ 3442.424238][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.424238][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.424238][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.424238][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.424238][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.424238][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.424238][ T72] [ 3442.426394][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3442.426394][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3442.426394][ T72] ipv6_find_idev+0x102/0x170 [ 3442.426394][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.426394][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.426394][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.426394][ T72] netlink_unicast+0x449/0x710 [ 3442.426394][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.426394][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.426394][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.426394][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.426394][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.426394][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.426394][ T72] [ 3442.428049][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3442.428049][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3442.428049][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3442.428049][ T72] ipv6_find_idev+0x102/0x170 [ 3442.428049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3442.428049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3442.428049][ T72] netlink_rcv_skb+0x130/0x360 [ 3442.428049][ T72] netlink_unicast+0x449/0x710 [ 3442.428049][ T72] netlink_sendmsg+0x723/0xbe0 [ 3442.428049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3442.428049][ T72] ___sys_sendmsg+0xee/0x170 [ 3442.428049][ T72] __sys_sendmsg+0xcd/0x170 [ 3442.428049][ T72] do_syscall_64+0xc6/0x1e0 [ 3442.428049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3442.428049][ T72] [ 3452.430860][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3452.431279][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3452.431279][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.431279][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.431279][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.431279][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.431279][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.431279][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.431279][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.431279][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.431279][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.431279][ T72] netlink_unicast+0x449/0x710 [ 3452.431279][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.431279][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.431279][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.431279][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.431279][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.431279][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.431279][ T72] [ 3452.433469][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3452.433469][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.433469][ T72] ipv6_find_idev+0x102/0x170 [ 3452.433469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.433469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.433469][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.433469][ T72] netlink_unicast+0x449/0x710 [ 3452.433469][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.433469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.433469][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.433469][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.433469][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.433469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.433469][ T72] [ 3452.435090][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3452.435090][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.435090][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.435090][ T72] ipv6_find_idev+0x102/0x170 [ 3452.435090][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.435090][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.435090][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.435090][ T72] netlink_unicast+0x449/0x710 [ 3452.435090][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.435090][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.435090][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.435090][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.435090][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.435090][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.435090][ T72] [ 3452.436864][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3452.437150][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3452.437150][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.437150][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.437150][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.437150][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.437150][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.437150][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.437150][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.437150][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.437150][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.437150][ T72] netlink_unicast+0x449/0x710 [ 3452.437150][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.437150][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.437150][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.437150][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.437150][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.437150][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.437150][ T72] [ 3452.439240][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3452.439240][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.439240][ T72] ipv6_find_idev+0x102/0x170 [ 3452.439240][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.439240][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.439240][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.439240][ T72] netlink_unicast+0x449/0x710 [ 3452.439240][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.439240][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.439240][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.439240][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.439240][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.439240][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.439240][ T72] [ 3452.440849][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3452.440849][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.440849][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.440849][ T72] ipv6_find_idev+0x102/0x170 [ 3452.440849][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.440849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.440849][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.440849][ T72] netlink_unicast+0x449/0x710 [ 3452.440849][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.440849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.440849][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.440849][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.440849][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.440849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.440849][ T72] [ 3452.442601][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3452.442895][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3452.442895][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.442895][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.442895][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.442895][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.442895][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.442895][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.442895][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.442895][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.442895][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.442895][ T72] netlink_unicast+0x449/0x710 [ 3452.442895][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.442895][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.442895][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.442895][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.442895][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.442895][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.442895][ T72] [ 3452.444974][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3452.444974][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.444974][ T72] ipv6_find_idev+0x102/0x170 [ 3452.444974][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.444974][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.444974][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.444974][ T72] netlink_unicast+0x449/0x710 [ 3452.444974][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.444974][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.444974][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.444974][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.444974][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.444974][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.444974][ T72] [ 3452.446575][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3452.446575][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.446575][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.446575][ T72] ipv6_find_idev+0x102/0x170 [ 3452.446575][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.446575][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.446575][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.446575][ T72] netlink_unicast+0x449/0x710 [ 3452.446575][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.446575][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.446575][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.446575][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.446575][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.446575][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.446575][ T72] [ 3452.448328][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3452.448616][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3452.448616][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.448616][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.448616][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.448616][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.448616][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.448616][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.448616][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.448616][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.448616][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.448616][ T72] netlink_unicast+0x449/0x710 [ 3452.448616][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.448616][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.448616][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.448616][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.448616][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.448616][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.448616][ T72] [ 3452.450694][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3452.450694][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.450694][ T72] ipv6_find_idev+0x102/0x170 [ 3452.450694][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.450694][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.450694][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.450694][ T72] netlink_unicast+0x449/0x710 [ 3452.450694][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.450694][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.450694][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.450694][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.450694][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.450694][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.450694][ T72] [ 3452.452306][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3452.452306][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.452306][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.452306][ T72] ipv6_find_idev+0x102/0x170 [ 3452.452306][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.452306][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.452306][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.452306][ T72] netlink_unicast+0x449/0x710 [ 3452.452306][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.452306][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.452306][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.452306][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.452306][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.452306][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.452306][ T72] [ 3452.454461][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3452.455081][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3452.455081][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.455081][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.455081][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.455081][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.455081][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.455081][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.455081][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.455081][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.455081][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.455081][ T72] netlink_unicast+0x449/0x710 [ 3452.455081][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.455081][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.455081][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.455081][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.455081][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.455081][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.455081][ T72] [ 3452.457148][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3452.457148][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.457148][ T72] ipv6_find_idev+0x102/0x170 [ 3452.457148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.457148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.457148][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.457148][ T72] netlink_unicast+0x449/0x710 [ 3452.457148][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.457148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.457148][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.457148][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.457148][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.457148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.457148][ T72] [ 3452.458717][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3452.458717][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.458717][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.458717][ T72] ipv6_find_idev+0x102/0x170 [ 3452.458717][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.458717][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.458717][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.458717][ T72] netlink_unicast+0x449/0x710 [ 3452.458717][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.458717][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.458717][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.458717][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.458717][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.458717][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.458717][ T72] [ 3452.460397][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3452.460669][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3452.460669][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.460669][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.460669][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.460669][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.460669][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.460669][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.460669][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.460669][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.460669][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.460669][ T72] netlink_unicast+0x449/0x710 [ 3452.460669][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.460669][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.460669][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.460669][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.460669][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.460669][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.460669][ T72] [ 3452.462656][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3452.462656][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.462656][ T72] ipv6_find_idev+0x102/0x170 [ 3452.462656][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.462656][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.462656][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.462656][ T72] netlink_unicast+0x449/0x710 [ 3452.462656][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.462656][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.462656][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.462656][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.462656][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.462656][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.462656][ T72] [ 3452.464246][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3452.464246][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.464246][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.464246][ T72] ipv6_find_idev+0x102/0x170 [ 3452.464246][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.464246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.464246][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.464246][ T72] netlink_unicast+0x449/0x710 [ 3452.464246][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.464246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.464246][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.464246][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.464246][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.464246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.464246][ T72] [ 3452.466270][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3452.466578][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3452.466578][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.466578][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.466578][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.466578][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.466578][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.466578][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.466578][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.466578][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.466578][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.466578][ T72] netlink_unicast+0x449/0x710 [ 3452.466578][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.466578][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.466578][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.466578][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.466578][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.466578][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.466578][ T72] [ 3452.468758][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3452.468758][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.468758][ T72] ipv6_find_idev+0x102/0x170 [ 3452.468758][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.468758][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.468758][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.468758][ T72] netlink_unicast+0x449/0x710 [ 3452.468758][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.468758][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.468758][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.468758][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.468758][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.468758][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.468758][ T72] [ 3452.470468][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3452.470468][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.470468][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.470468][ T72] ipv6_find_idev+0x102/0x170 [ 3452.470468][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.470468][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.470468][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.470468][ T72] netlink_unicast+0x449/0x710 [ 3452.470468][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.470468][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.470468][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.470468][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.470468][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.470468][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.470468][ T72] [ 3452.472369][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3452.472681][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3452.472681][ T72] netdev_get_by_index+0x5e/0x80 [ 3452.472681][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3452.472681][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3452.472681][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3452.472681][ T72] ipv6_add_addr+0x411/0x2000 [ 3452.472681][ T72] inet6_addr_add+0x30e/0xa40 [ 3452.472681][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3452.472681][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.472681][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.472681][ T72] netlink_unicast+0x449/0x710 [ 3452.472681][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.472681][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.472681][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.472681][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.472681][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.472681][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.472681][ T72] [ 3452.474844][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3452.474844][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3452.474844][ T72] ipv6_find_idev+0x102/0x170 [ 3452.474844][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.474844][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.474844][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.474844][ T72] netlink_unicast+0x449/0x710 [ 3452.474844][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.474844][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.474844][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.474844][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.474844][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.474844][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.474844][ T72] [ 3452.476559][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3452.476559][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3452.476559][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3452.476559][ T72] ipv6_find_idev+0x102/0x170 [ 3452.476559][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3452.476559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3452.476559][ T72] netlink_rcv_skb+0x130/0x360 [ 3452.476559][ T72] netlink_unicast+0x449/0x710 [ 3452.476559][ T72] netlink_sendmsg+0x723/0xbe0 [ 3452.476559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3452.476559][ T72] ___sys_sendmsg+0xee/0x170 [ 3452.476559][ T72] __sys_sendmsg+0xcd/0x170 [ 3452.476559][ T72] do_syscall_64+0xc6/0x1e0 [ 3452.476559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3452.476559][ T72] [ 3462.718864][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3462.719288][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3462.719288][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.719288][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.719288][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.719288][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.719288][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.719288][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.719288][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.719288][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.719288][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.719288][ T72] netlink_unicast+0x449/0x710 [ 3462.719288][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.719288][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.719288][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.719288][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.719288][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.719288][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.719288][ T72] [ 3462.721495][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3462.721495][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.721495][ T72] ipv6_find_idev+0x102/0x170 [ 3462.721495][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.721495][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.721495][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.721495][ T72] netlink_unicast+0x449/0x710 [ 3462.721495][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.721495][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.721495][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.721495][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.721495][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.721495][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.721495][ T72] [ 3462.723037][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3462.723037][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.723037][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.723037][ T72] ipv6_find_idev+0x102/0x170 [ 3462.723037][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.723037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.723037][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.723037][ T72] netlink_unicast+0x449/0x710 [ 3462.723037][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.723037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.723037][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.723037][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.723037][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.723037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.723037][ T72] [ 3462.724745][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3462.725037][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3462.725037][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.725037][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.725037][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.725037][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.725037][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.725037][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.725037][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.725037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.725037][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.725037][ T72] netlink_unicast+0x449/0x710 [ 3462.725037][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.725037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.725037][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.725037][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.725037][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.725037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.725037][ T72] [ 3462.727028][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3462.727028][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.727028][ T72] ipv6_find_idev+0x102/0x170 [ 3462.727028][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.727028][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.727028][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.727028][ T72] netlink_unicast+0x449/0x710 [ 3462.727028][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.727028][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.727028][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.727028][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.727028][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.727028][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.727028][ T72] [ 3462.728557][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3462.728557][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.728557][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.728557][ T72] ipv6_find_idev+0x102/0x170 [ 3462.728557][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.728557][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.728557][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.728557][ T72] netlink_unicast+0x449/0x710 [ 3462.728557][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.728557][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.728557][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.728557][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.728557][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.728557][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.728557][ T72] [ 3462.730231][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3462.730500][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3462.730500][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.730500][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.730500][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.730500][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.730500][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.730500][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.730500][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.730500][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.730500][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.730500][ T72] netlink_unicast+0x449/0x710 [ 3462.730500][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.730500][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.730500][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.730500][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.730500][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.730500][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.730500][ T72] [ 3462.732484][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3462.732484][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.732484][ T72] ipv6_find_idev+0x102/0x170 [ 3462.732484][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.732484][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.732484][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.732484][ T72] netlink_unicast+0x449/0x710 [ 3462.732484][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.732484][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.732484][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.732484][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.732484][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.732484][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.732484][ T72] [ 3462.734018][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3462.734018][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.734018][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.734018][ T72] ipv6_find_idev+0x102/0x170 [ 3462.734018][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.734018][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.734018][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.734018][ T72] netlink_unicast+0x449/0x710 [ 3462.734018][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.734018][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.734018][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.734018][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.734018][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.734018][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.734018][ T72] [ 3462.735701][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3462.736406][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3462.736406][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.736406][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.736406][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.736406][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.736406][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.736406][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.736406][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.736406][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.736406][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.736406][ T72] netlink_unicast+0x449/0x710 [ 3462.736406][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.736406][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.736406][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.736406][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.736406][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.736406][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.736406][ T72] [ 3462.738385][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3462.738385][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.738385][ T72] ipv6_find_idev+0x102/0x170 [ 3462.738385][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.738385][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.738385][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.738385][ T72] netlink_unicast+0x449/0x710 [ 3462.738385][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.738385][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.738385][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.738385][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.738385][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.738385][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.738385][ T72] [ 3462.739911][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3462.739911][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.739911][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.739911][ T72] ipv6_find_idev+0x102/0x170 [ 3462.739911][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.739911][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.739911][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.739911][ T72] netlink_unicast+0x449/0x710 [ 3462.739911][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.739911][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.739911][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.739911][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.739911][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.739911][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.739911][ T72] [ 3462.741624][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3462.741943][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3462.741943][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.741943][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.741943][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.741943][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.741943][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.741943][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.741943][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.741943][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.741943][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.741943][ T72] netlink_unicast+0x449/0x710 [ 3462.741943][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.741943][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.741943][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.741943][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.741943][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.741943][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.741943][ T72] [ 3462.743955][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3462.743955][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.743955][ T72] ipv6_find_idev+0x102/0x170 [ 3462.743955][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.743955][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.743955][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.743955][ T72] netlink_unicast+0x449/0x710 [ 3462.743955][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.743955][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.743955][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.743955][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.743955][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.743955][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.743955][ T72] [ 3462.745502][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3462.745502][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.745502][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.745502][ T72] ipv6_find_idev+0x102/0x170 [ 3462.745502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.745502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.745502][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.745502][ T72] netlink_unicast+0x449/0x710 [ 3462.745502][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.745502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.745502][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.745502][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.745502][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.745502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.745502][ T72] [ 3462.747230][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3462.747545][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3462.747545][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.747545][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.747545][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.747545][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.747545][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.747545][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.747545][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.747545][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.747545][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.747545][ T72] netlink_unicast+0x449/0x710 [ 3462.747545][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.747545][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.747545][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.747545][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.747545][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.747545][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.747545][ T72] [ 3462.749597][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3462.749597][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.749597][ T72] ipv6_find_idev+0x102/0x170 [ 3462.749597][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.749597][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.749597][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.749597][ T72] netlink_unicast+0x449/0x710 [ 3462.749597][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.749597][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.749597][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.749597][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.749597][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.749597][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.749597][ T72] [ 3462.751313][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3462.751313][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.751313][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.751313][ T72] ipv6_find_idev+0x102/0x170 [ 3462.751313][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.751313][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.751313][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.751313][ T72] netlink_unicast+0x449/0x710 [ 3462.751313][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.751313][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.751313][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.751313][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.751313][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.751313][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.751313][ T72] [ 3462.753214][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3462.753535][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3462.753535][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.753535][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.753535][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.753535][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.753535][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.753535][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.753535][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.753535][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.753535][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.753535][ T72] netlink_unicast+0x449/0x710 [ 3462.753535][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.753535][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.753535][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.753535][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.753535][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.753535][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.753535][ T72] [ 3462.755763][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3462.755763][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.755763][ T72] ipv6_find_idev+0x102/0x170 [ 3462.755763][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.755763][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.755763][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.755763][ T72] netlink_unicast+0x449/0x710 [ 3462.755763][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.755763][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.755763][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.755763][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.755763][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.755763][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.755763][ T72] [ 3462.757474][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3462.757474][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.757474][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.757474][ T72] ipv6_find_idev+0x102/0x170 [ 3462.757474][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.757474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.757474][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.757474][ T72] netlink_unicast+0x449/0x710 [ 3462.757474][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.757474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.757474][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.757474][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.757474][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.757474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.757474][ T72] [ 3462.759372][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3462.759686][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3462.759686][ T72] netdev_get_by_index+0x5e/0x80 [ 3462.759686][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3462.759686][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3462.759686][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3462.759686][ T72] ipv6_add_addr+0x411/0x2000 [ 3462.759686][ T72] inet6_addr_add+0x30e/0xa40 [ 3462.759686][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3462.759686][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.759686][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.759686][ T72] netlink_unicast+0x449/0x710 [ 3462.759686][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.759686][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.759686][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.759686][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.759686][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.759686][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.759686][ T72] [ 3462.761854][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3462.761854][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3462.761854][ T72] ipv6_find_idev+0x102/0x170 [ 3462.761854][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.761854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.761854][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.761854][ T72] netlink_unicast+0x449/0x710 [ 3462.761854][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.761854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.761854][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.761854][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.761854][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.761854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.761854][ T72] [ 3462.763564][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3462.763564][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3462.763564][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3462.763564][ T72] ipv6_find_idev+0x102/0x170 [ 3462.763564][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3462.763564][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3462.763564][ T72] netlink_rcv_skb+0x130/0x360 [ 3462.763564][ T72] netlink_unicast+0x449/0x710 [ 3462.763564][ T72] netlink_sendmsg+0x723/0xbe0 [ 3462.763564][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3462.763564][ T72] ___sys_sendmsg+0xee/0x170 [ 3462.763564][ T72] __sys_sendmsg+0xcd/0x170 [ 3462.763564][ T72] do_syscall_64+0xc6/0x1e0 [ 3462.763564][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3462.763564][ T72] [ 3473.006882][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3473.007310][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3473.007310][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.007310][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.007310][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.007310][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.007310][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.007310][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.007310][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.007310][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.007310][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.007310][ T72] netlink_unicast+0x449/0x710 [ 3473.007310][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.007310][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.007310][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.007310][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.007310][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.007310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.007310][ T72] [ 3473.009321][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3473.009321][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.009321][ T72] ipv6_find_idev+0x102/0x170 [ 3473.009321][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.009321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.009321][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.009321][ T72] netlink_unicast+0x449/0x710 [ 3473.009321][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.009321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.009321][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.009321][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.009321][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.009321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.009321][ T72] [ 3473.010885][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3473.010885][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.010885][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.010885][ T72] ipv6_find_idev+0x102/0x170 [ 3473.010885][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.010885][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.010885][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.010885][ T72] netlink_unicast+0x449/0x710 [ 3473.010885][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.010885][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.010885][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.010885][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.010885][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.010885][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.010885][ T72] [ 3473.012620][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3473.012909][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3473.012909][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.012909][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.012909][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.012909][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.012909][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.012909][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.012909][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.012909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.012909][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.012909][ T72] netlink_unicast+0x449/0x710 [ 3473.012909][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.012909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.012909][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.012909][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.012909][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.012909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.012909][ T72] [ 3473.014905][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3473.014905][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.014905][ T72] ipv6_find_idev+0x102/0x170 [ 3473.014905][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.014905][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.014905][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.014905][ T72] netlink_unicast+0x449/0x710 [ 3473.014905][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.014905][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.014905][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.014905][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.014905][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.014905][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.014905][ T72] [ 3473.016451][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3473.016451][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.016451][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.016451][ T72] ipv6_find_idev+0x102/0x170 [ 3473.016451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.016451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.016451][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.016451][ T72] netlink_unicast+0x449/0x710 [ 3473.016451][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.016451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.016451][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.016451][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.016451][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.016451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.016451][ T72] [ 3473.018137][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3473.018405][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3473.018405][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.018405][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.018405][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.018405][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.018405][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.018405][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.018405][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.018405][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.018405][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.018405][ T72] netlink_unicast+0x449/0x710 [ 3473.018405][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.018405][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.018405][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.018405][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.018405][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.018405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.018405][ T72] [ 3473.020387][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3473.020387][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.020387][ T72] ipv6_find_idev+0x102/0x170 [ 3473.020387][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.020387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.020387][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.020387][ T72] netlink_unicast+0x449/0x710 [ 3473.020387][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.020387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.020387][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.020387][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.020387][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.020387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.020387][ T72] [ 3473.021916][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3473.021916][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.021916][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.021916][ T72] ipv6_find_idev+0x102/0x170 [ 3473.021916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.021916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.021916][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.021916][ T72] netlink_unicast+0x449/0x710 [ 3473.021916][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.021916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.021916][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.021916][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.021916][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.021916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.021916][ T72] [ 3473.023591][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3473.024289][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3473.024289][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.024289][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.024289][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.024289][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.024289][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.024289][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.024289][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.024289][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.024289][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.024289][ T72] netlink_unicast+0x449/0x710 [ 3473.024289][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.024289][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.024289][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.024289][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.024289][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.024289][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.024289][ T72] [ 3473.026270][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3473.026270][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.026270][ T72] ipv6_find_idev+0x102/0x170 [ 3473.026270][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.026270][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.026270][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.026270][ T72] netlink_unicast+0x449/0x710 [ 3473.026270][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.026270][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.026270][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.026270][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.026270][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.026270][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.026270][ T72] [ 3473.027813][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3473.027813][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.027813][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.027813][ T72] ipv6_find_idev+0x102/0x170 [ 3473.027813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.027813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.027813][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.027813][ T72] netlink_unicast+0x449/0x710 [ 3473.027813][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.027813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.027813][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.027813][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.027813][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.027813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.027813][ T72] [ 3473.029535][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3473.029855][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3473.029855][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.029855][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.029855][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.029855][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.029855][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.029855][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.029855][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.029855][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.029855][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.029855][ T72] netlink_unicast+0x449/0x710 [ 3473.029855][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.029855][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.029855][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.029855][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.029855][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.029855][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.029855][ T72] [ 3473.031836][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3473.031836][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.031836][ T72] ipv6_find_idev+0x102/0x170 [ 3473.031836][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.031836][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.031836][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.031836][ T72] netlink_unicast+0x449/0x710 [ 3473.031836][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.031836][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.031836][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.031836][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.031836][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.031836][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.031836][ T72] [ 3473.033363][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3473.033363][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.033363][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.033363][ T72] ipv6_find_idev+0x102/0x170 [ 3473.033363][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.033363][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.033363][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.033363][ T72] netlink_unicast+0x449/0x710 [ 3473.033363][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.033363][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.033363][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.033363][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.033363][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.033363][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.033363][ T72] [ 3473.035103][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3473.035410][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3473.035410][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.035410][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.035410][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.035410][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.035410][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.035410][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.035410][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.035410][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.035410][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.035410][ T72] netlink_unicast+0x449/0x710 [ 3473.035410][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.035410][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.035410][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.035410][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.035410][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.035410][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.035410][ T72] [ 3473.037475][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3473.037475][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.037475][ T72] ipv6_find_idev+0x102/0x170 [ 3473.037475][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.037475][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.037475][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.037475][ T72] netlink_unicast+0x449/0x710 [ 3473.037475][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.037475][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.037475][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.037475][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.037475][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.037475][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.037475][ T72] [ 3473.039246][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3473.039246][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.039246][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.039246][ T72] ipv6_find_idev+0x102/0x170 [ 3473.039246][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.039246][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.039246][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.039246][ T72] netlink_unicast+0x449/0x710 [ 3473.039246][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.039246][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.039246][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.039246][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.039246][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.039246][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.039246][ T72] [ 3473.041186][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3473.041496][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3473.041496][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.041496][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.041496][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.041496][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.041496][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.041496][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.041496][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.041496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.041496][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.041496][ T72] netlink_unicast+0x449/0x710 [ 3473.041496][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.041496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.041496][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.041496][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.041496][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.041496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.041496][ T72] [ 3473.044189][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3473.044189][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.044189][ T72] ipv6_find_idev+0x102/0x170 [ 3473.044189][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.044189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.044189][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.044189][ T72] netlink_unicast+0x449/0x710 [ 3473.044189][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.044189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.044189][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.044189][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.044189][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.044189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.044189][ T72] [ 3473.045907][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3473.045907][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.045907][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.045907][ T72] ipv6_find_idev+0x102/0x170 [ 3473.045907][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.045907][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.045907][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.045907][ T72] netlink_unicast+0x449/0x710 [ 3473.045907][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.045907][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.045907][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.045907][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.045907][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.045907][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.045907][ T72] [ 3473.047817][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3473.048138][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3473.048138][ T72] netdev_get_by_index+0x5e/0x80 [ 3473.048138][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3473.048138][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3473.048138][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3473.048138][ T72] ipv6_add_addr+0x411/0x2000 [ 3473.048138][ T72] inet6_addr_add+0x30e/0xa40 [ 3473.048138][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3473.048138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.048138][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.048138][ T72] netlink_unicast+0x449/0x710 [ 3473.048138][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.048138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.048138][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.048138][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.048138][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.048138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.048138][ T72] [ 3473.050309][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3473.050309][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3473.050309][ T72] ipv6_find_idev+0x102/0x170 [ 3473.050309][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.050309][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.050309][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.050309][ T72] netlink_unicast+0x449/0x710 [ 3473.050309][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.050309][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.050309][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.050309][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.050309][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.050309][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.050309][ T72] [ 3473.052075][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3473.052075][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3473.052075][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3473.052075][ T72] ipv6_find_idev+0x102/0x170 [ 3473.052075][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3473.052075][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3473.052075][ T72] netlink_rcv_skb+0x130/0x360 [ 3473.052075][ T72] netlink_unicast+0x449/0x710 [ 3473.052075][ T72] netlink_sendmsg+0x723/0xbe0 [ 3473.052075][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3473.052075][ T72] ___sys_sendmsg+0xee/0x170 [ 3473.052075][ T72] __sys_sendmsg+0xcd/0x170 [ 3473.052075][ T72] do_syscall_64+0xc6/0x1e0 [ 3473.052075][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3473.052075][ T72] [ 3483.158932][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3483.159449][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3483.159449][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.159449][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.159449][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.159449][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.159449][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.159449][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.159449][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.159449][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.159449][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.159449][ T72] netlink_unicast+0x449/0x710 [ 3483.159449][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.159449][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.159449][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.159449][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.159449][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.159449][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.159449][ T72] [ 3483.161501][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3483.161501][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.161501][ T72] ipv6_find_idev+0x102/0x170 [ 3483.161501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.161501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.161501][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.161501][ T72] netlink_unicast+0x449/0x710 [ 3483.161501][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.161501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.161501][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.161501][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.161501][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.161501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.161501][ T72] [ 3483.163079][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3483.163079][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.163079][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.163079][ T72] ipv6_find_idev+0x102/0x170 [ 3483.163079][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.163079][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.163079][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.163079][ T72] netlink_unicast+0x449/0x710 [ 3483.163079][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.163079][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.163079][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.163079][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.163079][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.163079][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.163079][ T72] [ 3483.164868][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3483.165158][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3483.165158][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.165158][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.165158][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.165158][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.165158][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.165158][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.165158][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.165158][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.165158][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.165158][ T72] netlink_unicast+0x449/0x710 [ 3483.165158][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.165158][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.165158][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.165158][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.165158][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.165158][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.165158][ T72] [ 3483.167265][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3483.167265][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.167265][ T72] ipv6_find_idev+0x102/0x170 [ 3483.167265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.167265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.167265][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.167265][ T72] netlink_unicast+0x449/0x710 [ 3483.167265][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.167265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.167265][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.167265][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.167265][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.167265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.167265][ T72] [ 3483.168871][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3483.168871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.168871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.168871][ T72] ipv6_find_idev+0x102/0x170 [ 3483.168871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.168871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.168871][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.168871][ T72] netlink_unicast+0x449/0x710 [ 3483.168871][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.168871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.168871][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.168871][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.168871][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.168871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.168871][ T72] [ 3483.170651][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3483.170944][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3483.170944][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.170944][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.170944][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.170944][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.170944][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.170944][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.170944][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.170944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.170944][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.170944][ T72] netlink_unicast+0x449/0x710 [ 3483.170944][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.170944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.170944][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.170944][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.170944][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.170944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.170944][ T72] [ 3483.172964][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3483.172964][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.172964][ T72] ipv6_find_idev+0x102/0x170 [ 3483.172964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.172964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.172964][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.172964][ T72] netlink_unicast+0x449/0x710 [ 3483.172964][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.172964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.172964][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.172964][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.172964][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.172964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.172964][ T72] [ 3483.174496][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3483.174496][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.174496][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.174496][ T72] ipv6_find_idev+0x102/0x170 [ 3483.174496][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.174496][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.174496][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.174496][ T72] netlink_unicast+0x449/0x710 [ 3483.174496][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.174496][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.174496][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.174496][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.174496][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.174496][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.174496][ T72] [ 3483.176187][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3483.176454][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3483.176454][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.176454][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.176454][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.176454][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.176454][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.176454][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.176454][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.176454][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.176454][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.176454][ T72] netlink_unicast+0x449/0x710 [ 3483.176454][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.176454][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.176454][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.176454][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.176454][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.176454][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.176454][ T72] [ 3483.178450][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3483.178450][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.178450][ T72] ipv6_find_idev+0x102/0x170 [ 3483.178450][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.178450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.178450][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.178450][ T72] netlink_unicast+0x449/0x710 [ 3483.178450][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.178450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.178450][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.178450][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.178450][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.178450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.178450][ T72] [ 3483.179981][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3483.179981][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.179981][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.179981][ T72] ipv6_find_idev+0x102/0x170 [ 3483.179981][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.179981][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.179981][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.179981][ T72] netlink_unicast+0x449/0x710 [ 3483.179981][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.179981][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.179981][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.179981][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.179981][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.179981][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.179981][ T72] [ 3483.181710][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3483.182034][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3483.182034][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.182034][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.182034][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.182034][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.182034][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.182034][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.182034][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.182034][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.182034][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.182034][ T72] netlink_unicast+0x449/0x710 [ 3483.182034][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.182034][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.182034][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.182034][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.182034][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.182034][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.182034][ T72] [ 3483.184015][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3483.184015][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.184015][ T72] ipv6_find_idev+0x102/0x170 [ 3483.184015][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.184015][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.184015][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.184015][ T72] netlink_unicast+0x449/0x710 [ 3483.184015][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.184015][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.184015][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.184015][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.184015][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.184015][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.184015][ T72] [ 3483.185549][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3483.185549][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.185549][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.185549][ T72] ipv6_find_idev+0x102/0x170 [ 3483.185549][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.185549][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.185549][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.185549][ T72] netlink_unicast+0x449/0x710 [ 3483.185549][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.185549][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.185549][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.185549][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.185549][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.185549][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.185549][ T72] [ 3483.187660][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3483.187992][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3483.187992][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.187992][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.187992][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.187992][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.187992][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.187992][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.187992][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.187992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.187992][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.187992][ T72] netlink_unicast+0x449/0x710 [ 3483.187992][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.187992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.187992][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.187992][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.187992][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.187992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.187992][ T72] [ 3483.190247][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3483.190247][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.190247][ T72] ipv6_find_idev+0x102/0x170 [ 3483.190247][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.190247][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.190247][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.190247][ T72] netlink_unicast+0x449/0x710 [ 3483.190247][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.190247][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.190247][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.190247][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.190247][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.190247][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.190247][ T72] [ 3483.192029][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3483.192029][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.192029][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.192029][ T72] ipv6_find_idev+0x102/0x170 [ 3483.192029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.192029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.192029][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.192029][ T72] netlink_unicast+0x449/0x710 [ 3483.192029][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.192029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.192029][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.192029][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.192029][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.192029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.192029][ T72] [ 3483.194010][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3483.194326][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3483.194326][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.194326][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.194326][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.194326][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.194326][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.194326][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.194326][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.194326][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.194326][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.194326][ T72] netlink_unicast+0x449/0x710 [ 3483.194326][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.194326][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.194326][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.194326][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.194326][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.194326][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.194326][ T72] [ 3483.196590][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3483.196590][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.196590][ T72] ipv6_find_idev+0x102/0x170 [ 3483.196590][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.196590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.196590][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.196590][ T72] netlink_unicast+0x449/0x710 [ 3483.196590][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.196590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.196590][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.196590][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.196590][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.196590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.196590][ T72] [ 3483.198366][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3483.198366][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.198366][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.198366][ T72] ipv6_find_idev+0x102/0x170 [ 3483.198366][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.198366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.198366][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.198366][ T72] netlink_unicast+0x449/0x710 [ 3483.198366][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.198366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.198366][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.198366][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.198366][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.198366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.198366][ T72] [ 3483.200428][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3483.200752][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3483.200752][ T72] netdev_get_by_index+0x5e/0x80 [ 3483.200752][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3483.200752][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3483.200752][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3483.200752][ T72] ipv6_add_addr+0x411/0x2000 [ 3483.200752][ T72] inet6_addr_add+0x30e/0xa40 [ 3483.200752][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3483.200752][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.200752][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.200752][ T72] netlink_unicast+0x449/0x710 [ 3483.200752][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.200752][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.200752][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.200752][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.200752][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.200752][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.200752][ T72] [ 3483.203001][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3483.203001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3483.203001][ T72] ipv6_find_idev+0x102/0x170 [ 3483.203001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.203001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.203001][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.203001][ T72] netlink_unicast+0x449/0x710 [ 3483.203001][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.203001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.203001][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.203001][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.203001][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.203001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.203001][ T72] [ 3483.204782][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3483.204782][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3483.204782][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3483.204782][ T72] ipv6_find_idev+0x102/0x170 [ 3483.204782][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3483.204782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3483.204782][ T72] netlink_rcv_skb+0x130/0x360 [ 3483.204782][ T72] netlink_unicast+0x449/0x710 [ 3483.204782][ T72] netlink_sendmsg+0x723/0xbe0 [ 3483.204782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3483.204782][ T72] ___sys_sendmsg+0xee/0x170 [ 3483.204782][ T72] __sys_sendmsg+0xcd/0x170 [ 3483.204782][ T72] do_syscall_64+0xc6/0x1e0 [ 3483.204782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3483.204782][ T72] [ 3493.446836][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3493.447278][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3493.447278][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.447278][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.447278][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.447278][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.447278][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.447278][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.447278][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.447278][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.447278][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.447278][ T72] netlink_unicast+0x449/0x710 [ 3493.447278][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.447278][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.447278][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.447278][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.447278][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.447278][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.447278][ T72] [ 3493.449384][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3493.449384][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.449384][ T72] ipv6_find_idev+0x102/0x170 [ 3493.449384][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.449384][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.449384][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.449384][ T72] netlink_unicast+0x449/0x710 [ 3493.449384][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.449384][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.449384][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.449384][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.449384][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.449384][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.449384][ T72] [ 3493.450995][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3493.450995][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.450995][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.450995][ T72] ipv6_find_idev+0x102/0x170 [ 3493.450995][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.450995][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.450995][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.450995][ T72] netlink_unicast+0x449/0x710 [ 3493.450995][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.450995][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.450995][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.450995][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.450995][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.450995][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.450995][ T72] [ 3493.452773][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3493.453058][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3493.453058][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.453058][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.453058][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.453058][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.453058][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.453058][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.453058][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.453058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.453058][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.453058][ T72] netlink_unicast+0x449/0x710 [ 3493.453058][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.453058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.453058][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.453058][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.453058][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.453058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.453058][ T72] [ 3493.455144][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3493.455144][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.455144][ T72] ipv6_find_idev+0x102/0x170 [ 3493.455144][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.455144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.455144][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.455144][ T72] netlink_unicast+0x449/0x710 [ 3493.455144][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.455144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.455144][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.455144][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.455144][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.455144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.455144][ T72] [ 3493.456748][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3493.456748][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.456748][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.456748][ T72] ipv6_find_idev+0x102/0x170 [ 3493.456748][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.456748][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.456748][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.456748][ T72] netlink_unicast+0x449/0x710 [ 3493.456748][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.456748][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.456748][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.456748][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.456748][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.456748][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.456748][ T72] [ 3493.458511][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3493.458799][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3493.458799][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.458799][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.458799][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.458799][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.458799][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.458799][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.458799][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.458799][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.458799][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.458799][ T72] netlink_unicast+0x449/0x710 [ 3493.458799][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.458799][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.458799][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.458799][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.458799][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.458799][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.458799][ T72] [ 3493.460884][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3493.460884][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.460884][ T72] ipv6_find_idev+0x102/0x170 [ 3493.460884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.460884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.460884][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.460884][ T72] netlink_unicast+0x449/0x710 [ 3493.460884][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.460884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.460884][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.460884][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.460884][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.460884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.460884][ T72] [ 3493.462480][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3493.462480][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.462480][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.462480][ T72] ipv6_find_idev+0x102/0x170 [ 3493.462480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.462480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.462480][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.462480][ T72] netlink_unicast+0x449/0x710 [ 3493.462480][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.462480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.462480][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.462480][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.462480][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.462480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.462480][ T72] [ 3493.464231][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3493.464505][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3493.464505][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.464505][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.464505][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.464505][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.464505][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.464505][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.464505][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.464505][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.464505][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.464505][ T72] netlink_unicast+0x449/0x710 [ 3493.464505][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.464505][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.464505][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.464505][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.464505][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.464505][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.464505][ T72] [ 3493.466582][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3493.466582][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.466582][ T72] ipv6_find_idev+0x102/0x170 [ 3493.466582][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.466582][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.466582][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.466582][ T72] netlink_unicast+0x449/0x710 [ 3493.466582][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.466582][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.466582][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.466582][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.466582][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.466582][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.466582][ T72] [ 3493.468178][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3493.468178][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.468178][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.468178][ T72] ipv6_find_idev+0x102/0x170 [ 3493.468178][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.468178][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.468178][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.468178][ T72] netlink_unicast+0x449/0x710 [ 3493.468178][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.468178][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.468178][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.468178][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.468178][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.468178][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.468178][ T72] [ 3493.470328][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3493.470942][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3493.470942][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.470942][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.470942][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.470942][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.470942][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.470942][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.470942][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.470942][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.470942][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.470942][ T72] netlink_unicast+0x449/0x710 [ 3493.470942][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.470942][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.470942][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.470942][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.470942][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.470942][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.470942][ T72] [ 3493.473011][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3493.473011][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.473011][ T72] ipv6_find_idev+0x102/0x170 [ 3493.473011][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.473011][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.473011][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.473011][ T72] netlink_unicast+0x449/0x710 [ 3493.473011][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.473011][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.473011][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.473011][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.473011][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.473011][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.473011][ T72] [ 3493.474610][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3493.474610][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.474610][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.474610][ T72] ipv6_find_idev+0x102/0x170 [ 3493.474610][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.474610][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.474610][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.474610][ T72] netlink_unicast+0x449/0x710 [ 3493.474610][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.474610][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.474610][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.474610][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.474610][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.474610][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.474610][ T72] [ 3493.476384][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3493.476665][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3493.476665][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.476665][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.476665][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.476665][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.476665][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.476665][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.476665][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.476665][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.476665][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.476665][ T72] netlink_unicast+0x449/0x710 [ 3493.476665][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.476665][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.476665][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.476665][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.476665][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.476665][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.476665][ T72] [ 3493.478767][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3493.478767][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.478767][ T72] ipv6_find_idev+0x102/0x170 [ 3493.478767][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.478767][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.478767][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.478767][ T72] netlink_unicast+0x449/0x710 [ 3493.478767][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.478767][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.478767][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.478767][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.478767][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.478767][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.478767][ T72] [ 3493.480423][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3493.480423][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.480423][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.480423][ T72] ipv6_find_idev+0x102/0x170 [ 3493.480423][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.480423][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.480423][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.480423][ T72] netlink_unicast+0x449/0x710 [ 3493.480423][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.480423][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.480423][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.480423][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.480423][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.480423][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.480423][ T72] [ 3493.482528][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3493.482854][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3493.482854][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.482854][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.482854][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.482854][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.482854][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.482854][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.482854][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.482854][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.482854][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.482854][ T72] netlink_unicast+0x449/0x710 [ 3493.482854][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.482854][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.482854][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.482854][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.482854][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.482854][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.482854][ T72] [ 3493.485140][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3493.485140][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.485140][ T72] ipv6_find_idev+0x102/0x170 [ 3493.485140][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.485140][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.485140][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.485140][ T72] netlink_unicast+0x449/0x710 [ 3493.485140][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.485140][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.485140][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.485140][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.485140][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.485140][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.485140][ T72] [ 3493.486916][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3493.486916][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.486916][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.486916][ T72] ipv6_find_idev+0x102/0x170 [ 3493.486916][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.486916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.486916][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.486916][ T72] netlink_unicast+0x449/0x710 [ 3493.486916][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.486916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.486916][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.486916][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.486916][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.486916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.486916][ T72] [ 3493.488896][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3493.489216][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3493.489216][ T72] netdev_get_by_index+0x5e/0x80 [ 3493.489216][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3493.489216][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3493.489216][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3493.489216][ T72] ipv6_add_addr+0x411/0x2000 [ 3493.489216][ T72] inet6_addr_add+0x30e/0xa40 [ 3493.489216][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3493.489216][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.489216][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.489216][ T72] netlink_unicast+0x449/0x710 [ 3493.489216][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.489216][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.489216][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.489216][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.489216][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.489216][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.489216][ T72] [ 3493.491469][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3493.491469][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3493.491469][ T72] ipv6_find_idev+0x102/0x170 [ 3493.491469][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.491469][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.491469][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.491469][ T72] netlink_unicast+0x449/0x710 [ 3493.491469][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.491469][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.491469][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.491469][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.491469][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.491469][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.491469][ T72] [ 3493.493308][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3493.493308][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3493.493308][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3493.493308][ T72] ipv6_find_idev+0x102/0x170 [ 3493.493308][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3493.493308][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3493.493308][ T72] netlink_rcv_skb+0x130/0x360 [ 3493.493308][ T72] netlink_unicast+0x449/0x710 [ 3493.493308][ T72] netlink_sendmsg+0x723/0xbe0 [ 3493.493308][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3493.493308][ T72] ___sys_sendmsg+0xee/0x170 [ 3493.493308][ T72] __sys_sendmsg+0xcd/0x170 [ 3493.493308][ T72] do_syscall_64+0xc6/0x1e0 [ 3493.493308][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3493.493308][ T72] [ 3503.734968][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3503.735416][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3503.735416][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.735416][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.735416][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.735416][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.735416][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.735416][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.735416][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.735416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.735416][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.735416][ T72] netlink_unicast+0x449/0x710 [ 3503.735416][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.735416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.735416][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.735416][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.735416][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.735416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.735416][ T72] [ 3503.737554][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3503.737554][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.737554][ T72] ipv6_find_idev+0x102/0x170 [ 3503.737554][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.737554][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.737554][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.737554][ T72] netlink_unicast+0x449/0x710 [ 3503.737554][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.737554][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.737554][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.737554][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.737554][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.737554][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.737554][ T72] [ 3503.739157][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3503.739157][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.739157][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.739157][ T72] ipv6_find_idev+0x102/0x170 [ 3503.739157][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.739157][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.739157][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.739157][ T72] netlink_unicast+0x449/0x710 [ 3503.739157][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.739157][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.739157][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.739157][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.739157][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.739157][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.739157][ T72] [ 3503.740954][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3503.741244][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3503.741244][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.741244][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.741244][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.741244][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.741244][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.741244][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.741244][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.741244][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.741244][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.741244][ T72] netlink_unicast+0x449/0x710 [ 3503.741244][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.741244][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.741244][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.741244][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.741244][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.741244][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.741244][ T72] [ 3503.743321][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3503.743321][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.743321][ T72] ipv6_find_idev+0x102/0x170 [ 3503.743321][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.743321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.743321][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.743321][ T72] netlink_unicast+0x449/0x710 [ 3503.743321][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.743321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.743321][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.743321][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.743321][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.743321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.743321][ T72] [ 3503.744946][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3503.744946][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.744946][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.744946][ T72] ipv6_find_idev+0x102/0x170 [ 3503.744946][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.744946][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.744946][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.744946][ T72] netlink_unicast+0x449/0x710 [ 3503.744946][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.744946][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.744946][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.744946][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.744946][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.744946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.744946][ T72] [ 3503.746727][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3503.747033][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3503.747033][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.747033][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.747033][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.747033][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.747033][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.747033][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.747033][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.747033][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.747033][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.747033][ T72] netlink_unicast+0x449/0x710 [ 3503.747033][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.747033][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.747033][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.747033][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.747033][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.747033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.747033][ T72] [ 3503.749103][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3503.749103][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.749103][ T72] ipv6_find_idev+0x102/0x170 [ 3503.749103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.749103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.749103][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.749103][ T72] netlink_unicast+0x449/0x710 [ 3503.749103][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.749103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.749103][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.749103][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.749103][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.749103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.749103][ T72] [ 3503.750698][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3503.750698][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.750698][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.750698][ T72] ipv6_find_idev+0x102/0x170 [ 3503.750698][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.750698][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.750698][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.750698][ T72] netlink_unicast+0x449/0x710 [ 3503.750698][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.750698][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.750698][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.750698][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.750698][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.750698][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.750698][ T72] [ 3503.752482][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3503.752782][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3503.752782][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.752782][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.752782][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.752782][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.752782][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.752782][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.752782][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.752782][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.752782][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.752782][ T72] netlink_unicast+0x449/0x710 [ 3503.752782][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.752782][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.752782][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.752782][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.752782][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.752782][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.752782][ T72] [ 3503.754876][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3503.754876][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.754876][ T72] ipv6_find_idev+0x102/0x170 [ 3503.754876][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.754876][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.754876][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.754876][ T72] netlink_unicast+0x449/0x710 [ 3503.754876][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.754876][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.754876][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.754876][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.754876][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.754876][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.754876][ T72] [ 3503.756447][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3503.756447][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.756447][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.756447][ T72] ipv6_find_idev+0x102/0x170 [ 3503.756447][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.756447][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.756447][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.756447][ T72] netlink_unicast+0x449/0x710 [ 3503.756447][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.756447][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.756447][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.756447][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.756447][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.756447][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.756447][ T72] [ 3503.758523][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3503.759135][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3503.759135][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.759135][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.759135][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.759135][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.759135][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.759135][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.759135][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.759135][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.759135][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.759135][ T72] netlink_unicast+0x449/0x710 [ 3503.759135][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.759135][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.759135][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.759135][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.759135][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.759135][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.759135][ T72] [ 3503.761104][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3503.761104][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.761104][ T72] ipv6_find_idev+0x102/0x170 [ 3503.761104][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.761104][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.761104][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.761104][ T72] netlink_unicast+0x449/0x710 [ 3503.761104][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.761104][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.761104][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.761104][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.761104][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.761104][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.761104][ T72] [ 3503.762627][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3503.762627][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.762627][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.762627][ T72] ipv6_find_idev+0x102/0x170 [ 3503.762627][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.762627][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.762627][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.762627][ T72] netlink_unicast+0x449/0x710 [ 3503.762627][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.762627][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.762627][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.762627][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.762627][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.762627][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.762627][ T72] [ 3503.764306][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3503.764574][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3503.764574][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.764574][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.764574][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.764574][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.764574][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.764574][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.764574][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.764574][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.764574][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.764574][ T72] netlink_unicast+0x449/0x710 [ 3503.764574][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.764574][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.764574][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.764574][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.764574][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.764574][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.764574][ T72] [ 3503.766563][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3503.766563][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.766563][ T72] ipv6_find_idev+0x102/0x170 [ 3503.766563][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.766563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.766563][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.766563][ T72] netlink_unicast+0x449/0x710 [ 3503.766563][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.766563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.766563][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.766563][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.766563][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.766563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.766563][ T72] [ 3503.768151][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3503.768151][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.768151][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.768151][ T72] ipv6_find_idev+0x102/0x170 [ 3503.768151][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.768151][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.768151][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.768151][ T72] netlink_unicast+0x449/0x710 [ 3503.768151][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.768151][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.768151][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.768151][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.768151][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.768151][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.768151][ T72] [ 3503.770104][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3503.770409][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3503.770409][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.770409][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.770409][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.770409][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.770409][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.770409][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.770409][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.770409][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.770409][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.770409][ T72] netlink_unicast+0x449/0x710 [ 3503.770409][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.770409][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.770409][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.770409][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.770409][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.770409][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.770409][ T72] [ 3503.772623][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3503.772623][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.772623][ T72] ipv6_find_idev+0x102/0x170 [ 3503.772623][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.772623][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.772623][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.772623][ T72] netlink_unicast+0x449/0x710 [ 3503.772623][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.772623][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.772623][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.772623][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.772623][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.772623][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.772623][ T72] [ 3503.774325][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3503.774325][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.774325][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.774325][ T72] ipv6_find_idev+0x102/0x170 [ 3503.774325][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.774325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.774325][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.774325][ T72] netlink_unicast+0x449/0x710 [ 3503.774325][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.774325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.774325][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.774325][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.774325][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.774325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.774325][ T72] [ 3503.776228][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3503.776534][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3503.776534][ T72] netdev_get_by_index+0x5e/0x80 [ 3503.776534][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3503.776534][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3503.776534][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3503.776534][ T72] ipv6_add_addr+0x411/0x2000 [ 3503.776534][ T72] inet6_addr_add+0x30e/0xa40 [ 3503.776534][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3503.776534][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.776534][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.776534][ T72] netlink_unicast+0x449/0x710 [ 3503.776534][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.776534][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.776534][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.776534][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.776534][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.776534][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.776534][ T72] [ 3503.778705][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3503.778705][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3503.778705][ T72] ipv6_find_idev+0x102/0x170 [ 3503.778705][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.778705][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.778705][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.778705][ T72] netlink_unicast+0x449/0x710 [ 3503.778705][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.778705][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.778705][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.778705][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.778705][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.778705][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.778705][ T72] [ 3503.780403][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3503.780403][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3503.780403][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3503.780403][ T72] ipv6_find_idev+0x102/0x170 [ 3503.780403][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3503.780403][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3503.780403][ T72] netlink_rcv_skb+0x130/0x360 [ 3503.780403][ T72] netlink_unicast+0x449/0x710 [ 3503.780403][ T72] netlink_sendmsg+0x723/0xbe0 [ 3503.780403][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3503.780403][ T72] ___sys_sendmsg+0xee/0x170 [ 3503.780403][ T72] __sys_sendmsg+0xcd/0x170 [ 3503.780403][ T72] do_syscall_64+0xc6/0x1e0 [ 3503.780403][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3503.780403][ T72] [ 3514.022897][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3514.023339][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3514.023339][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.023339][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.023339][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.023339][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.023339][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.023339][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.023339][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.023339][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.023339][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.023339][ T72] netlink_unicast+0x449/0x710 [ 3514.023339][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.023339][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.023339][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.023339][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.023339][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.023339][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.023339][ T72] [ 3514.025395][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3514.025395][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.025395][ T72] ipv6_find_idev+0x102/0x170 [ 3514.025395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.025395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.025395][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.025395][ T72] netlink_unicast+0x449/0x710 [ 3514.025395][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.025395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.025395][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.025395][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.025395][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.025395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.025395][ T72] [ 3514.027098][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3514.027098][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.027098][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.027098][ T72] ipv6_find_idev+0x102/0x170 [ 3514.027098][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.027098][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.027098][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.027098][ T72] netlink_unicast+0x449/0x710 [ 3514.027098][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.027098][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.027098][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.027098][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.027098][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.027098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.027098][ T72] [ 3514.028884][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3514.029167][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3514.029167][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.029167][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.029167][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.029167][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.029167][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.029167][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.029167][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.029167][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.029167][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.029167][ T72] netlink_unicast+0x449/0x710 [ 3514.029167][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.029167][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.029167][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.029167][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.029167][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.029167][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.029167][ T72] [ 3514.031243][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3514.031243][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.031243][ T72] ipv6_find_idev+0x102/0x170 [ 3514.031243][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.031243][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.031243][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.031243][ T72] netlink_unicast+0x449/0x710 [ 3514.031243][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.031243][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.031243][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.031243][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.031243][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.031243][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.031243][ T72] [ 3514.032872][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3514.032872][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.032872][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.032872][ T72] ipv6_find_idev+0x102/0x170 [ 3514.032872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.032872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.032872][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.032872][ T72] netlink_unicast+0x449/0x710 [ 3514.032872][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.032872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.032872][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.032872][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.032872][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.032872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.032872][ T72] [ 3514.034630][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3514.034929][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3514.034929][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.034929][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.034929][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.034929][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.034929][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.034929][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.034929][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.034929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.034929][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.034929][ T72] netlink_unicast+0x449/0x710 [ 3514.034929][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.034929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.034929][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.034929][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.034929][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.034929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.034929][ T72] [ 3514.037000][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3514.037000][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.037000][ T72] ipv6_find_idev+0x102/0x170 [ 3514.037000][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.037000][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.037000][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.037000][ T72] netlink_unicast+0x449/0x710 [ 3514.037000][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.037000][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.037000][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.037000][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.037000][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.037000][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.037000][ T72] [ 3514.038594][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3514.038594][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.038594][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.038594][ T72] ipv6_find_idev+0x102/0x170 [ 3514.038594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.038594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.038594][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.038594][ T72] netlink_unicast+0x449/0x710 [ 3514.038594][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.038594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.038594][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.038594][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.038594][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.038594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.038594][ T72] [ 3514.040345][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3514.040617][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3514.040617][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.040617][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.040617][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.040617][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.040617][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.040617][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.040617][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.040617][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.040617][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.040617][ T72] netlink_unicast+0x449/0x710 [ 3514.040617][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.040617][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.040617][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.040617][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.040617][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.040617][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.040617][ T72] [ 3514.042701][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3514.042701][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.042701][ T72] ipv6_find_idev+0x102/0x170 [ 3514.042701][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.042701][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.042701][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.042701][ T72] netlink_unicast+0x449/0x710 [ 3514.042701][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.042701][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.042701][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.042701][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.042701][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.042701][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.042701][ T72] [ 3514.044311][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3514.044311][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.044311][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.044311][ T72] ipv6_find_idev+0x102/0x170 [ 3514.044311][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.044311][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.044311][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.044311][ T72] netlink_unicast+0x449/0x710 [ 3514.044311][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.044311][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.044311][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.044311][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.044311][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.044311][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.044311][ T72] [ 3514.046458][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3514.047076][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3514.047076][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.047076][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.047076][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.047076][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.047076][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.047076][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.047076][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.047076][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.047076][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.047076][ T72] netlink_unicast+0x449/0x710 [ 3514.047076][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.047076][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.047076][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.047076][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.047076][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.047076][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.047076][ T72] [ 3514.049148][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3514.049148][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.049148][ T72] ipv6_find_idev+0x102/0x170 [ 3514.049148][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.049148][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.049148][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.049148][ T72] netlink_unicast+0x449/0x710 [ 3514.049148][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.049148][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.049148][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.049148][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.049148][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.049148][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.049148][ T72] [ 3514.050749][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3514.050749][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.050749][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.050749][ T72] ipv6_find_idev+0x102/0x170 [ 3514.050749][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.050749][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.050749][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.050749][ T72] netlink_unicast+0x449/0x710 [ 3514.050749][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.050749][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.050749][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.050749][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.050749][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.050749][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.050749][ T72] [ 3514.052507][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3514.052849][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3514.052849][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.052849][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.052849][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.052849][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.052849][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.052849][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.052849][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.052849][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.052849][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.052849][ T72] netlink_unicast+0x449/0x710 [ 3514.052849][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.052849][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.052849][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.052849][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.052849][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.052849][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.052849][ T72] [ 3514.054934][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3514.054934][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.054934][ T72] ipv6_find_idev+0x102/0x170 [ 3514.054934][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.054934][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.054934][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.054934][ T72] netlink_unicast+0x449/0x710 [ 3514.054934][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.054934][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.054934][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.054934][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.054934][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.054934][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.054934][ T72] [ 3514.057154][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3514.057154][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.057154][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.057154][ T72] ipv6_find_idev+0x102/0x170 [ 3514.057154][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.057154][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.057154][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.057154][ T72] netlink_unicast+0x449/0x710 [ 3514.057154][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.057154][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.057154][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.057154][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.057154][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.057154][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.057154][ T72] [ 3514.059002][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3514.059335][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3514.059335][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.059335][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.059335][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.059335][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.059335][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.059335][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.059335][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.059335][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.059335][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.059335][ T72] netlink_unicast+0x449/0x710 [ 3514.059335][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.059335][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.059335][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.059335][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.059335][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.059335][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.059335][ T72] [ 3514.061474][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3514.061474][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.061474][ T72] ipv6_find_idev+0x102/0x170 [ 3514.061474][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.061474][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.061474][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.061474][ T72] netlink_unicast+0x449/0x710 [ 3514.061474][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.061474][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.061474][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.061474][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.061474][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.061474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.061474][ T72] [ 3514.063134][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3514.063134][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.063134][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.063134][ T72] ipv6_find_idev+0x102/0x170 [ 3514.063134][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.063134][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.063134][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.063134][ T72] netlink_unicast+0x449/0x710 [ 3514.063134][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.063134][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.063134][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.063134][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.063134][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.063134][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.063134][ T72] [ 3514.065010][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3514.065325][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3514.065325][ T72] netdev_get_by_index+0x5e/0x80 [ 3514.065325][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3514.065325][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3514.065325][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3514.065325][ T72] ipv6_add_addr+0x411/0x2000 [ 3514.065325][ T72] inet6_addr_add+0x30e/0xa40 [ 3514.065325][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3514.065325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.065325][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.065325][ T72] netlink_unicast+0x449/0x710 [ 3514.065325][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.065325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.065325][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.065325][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.065325][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.065325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.065325][ T72] [ 3514.067457][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3514.067457][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3514.067457][ T72] ipv6_find_idev+0x102/0x170 [ 3514.067457][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.067457][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.067457][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.067457][ T72] netlink_unicast+0x449/0x710 [ 3514.067457][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.067457][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.067457][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.067457][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.067457][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.067457][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.067457][ T72] [ 3514.069111][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3514.069111][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3514.069111][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3514.069111][ T72] ipv6_find_idev+0x102/0x170 [ 3514.069111][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3514.069111][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3514.069111][ T72] netlink_rcv_skb+0x130/0x360 [ 3514.069111][ T72] netlink_unicast+0x449/0x710 [ 3514.069111][ T72] netlink_sendmsg+0x723/0xbe0 [ 3514.069111][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3514.069111][ T72] ___sys_sendmsg+0xee/0x170 [ 3514.069111][ T72] __sys_sendmsg+0xcd/0x170 [ 3514.069111][ T72] do_syscall_64+0xc6/0x1e0 [ 3514.069111][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3514.069111][ T72] [ 3524.310876][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3524.311381][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3524.311381][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.311381][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.311381][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.311381][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.311381][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.311381][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.311381][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.311381][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.311381][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.311381][ T72] netlink_unicast+0x449/0x710 [ 3524.311381][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.311381][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.311381][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.311381][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.311381][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.311381][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.311381][ T72] [ 3524.313501][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3524.313501][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.313501][ T72] ipv6_find_idev+0x102/0x170 [ 3524.313501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.313501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.313501][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.313501][ T72] netlink_unicast+0x449/0x710 [ 3524.313501][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.313501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.313501][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.313501][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.313501][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.313501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.313501][ T72] [ 3524.315121][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3524.315121][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.315121][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.315121][ T72] ipv6_find_idev+0x102/0x170 [ 3524.315121][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.315121][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.315121][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.315121][ T72] netlink_unicast+0x449/0x710 [ 3524.315121][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.315121][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.315121][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.315121][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.315121][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.315121][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.315121][ T72] [ 3524.316903][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3524.317191][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3524.317191][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.317191][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.317191][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.317191][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.317191][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.317191][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.317191][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.317191][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.317191][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.317191][ T72] netlink_unicast+0x449/0x710 [ 3524.317191][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.317191][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.317191][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.317191][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.317191][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.317191][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.317191][ T72] [ 3524.319262][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3524.319262][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.319262][ T72] ipv6_find_idev+0x102/0x170 [ 3524.319262][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.319262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.319262][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.319262][ T72] netlink_unicast+0x449/0x710 [ 3524.319262][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.319262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.319262][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.319262][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.319262][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.319262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.319262][ T72] [ 3524.320867][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3524.320867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.320867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.320867][ T72] ipv6_find_idev+0x102/0x170 [ 3524.320867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.320867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.320867][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.320867][ T72] netlink_unicast+0x449/0x710 [ 3524.320867][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.320867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.320867][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.320867][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.320867][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.320867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.320867][ T72] [ 3524.322618][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3524.322904][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3524.322904][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.322904][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.322904][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.322904][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.322904][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.322904][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.322904][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.322904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.322904][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.322904][ T72] netlink_unicast+0x449/0x710 [ 3524.322904][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.322904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.322904][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.322904][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.322904][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.322904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.322904][ T72] [ 3524.325001][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3524.325001][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.325001][ T72] ipv6_find_idev+0x102/0x170 [ 3524.325001][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.325001][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.325001][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.325001][ T72] netlink_unicast+0x449/0x710 [ 3524.325001][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.325001][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.325001][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.325001][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.325001][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.325001][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.325001][ T72] [ 3524.326605][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3524.326605][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.326605][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.326605][ T72] ipv6_find_idev+0x102/0x170 [ 3524.326605][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.326605][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.326605][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.326605][ T72] netlink_unicast+0x449/0x710 [ 3524.326605][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.326605][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.326605][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.326605][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.326605][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.326605][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.326605][ T72] [ 3524.328373][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3524.328648][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3524.328648][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.328648][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.328648][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.328648][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.328648][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.328648][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.328648][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.328648][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.328648][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.328648][ T72] netlink_unicast+0x449/0x710 [ 3524.328648][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.328648][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.328648][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.328648][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.328648][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.328648][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.328648][ T72] [ 3524.330733][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3524.330733][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.330733][ T72] ipv6_find_idev+0x102/0x170 [ 3524.330733][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.330733][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.330733][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.330733][ T72] netlink_unicast+0x449/0x710 [ 3524.330733][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.330733][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.330733][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.330733][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.330733][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.330733][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.330733][ T72] [ 3524.332332][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3524.332332][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.332332][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.332332][ T72] ipv6_find_idev+0x102/0x170 [ 3524.332332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.332332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.332332][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.332332][ T72] netlink_unicast+0x449/0x710 [ 3524.332332][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.332332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.332332][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.332332][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.332332][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.332332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.332332][ T72] [ 3524.334490][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3524.335127][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3524.335127][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.335127][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.335127][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.335127][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.335127][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.335127][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.335127][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.335127][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.335127][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.335127][ T72] netlink_unicast+0x449/0x710 [ 3524.335127][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.335127][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.335127][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.335127][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.335127][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.335127][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.335127][ T72] [ 3524.337206][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3524.337206][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.337206][ T72] ipv6_find_idev+0x102/0x170 [ 3524.337206][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.337206][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.337206][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.337206][ T72] netlink_unicast+0x449/0x710 [ 3524.337206][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.337206][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.337206][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.337206][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.337206][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.337206][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.337206][ T72] [ 3524.338801][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3524.338801][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.338801][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.338801][ T72] ipv6_find_idev+0x102/0x170 [ 3524.338801][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.338801][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.338801][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.338801][ T72] netlink_unicast+0x449/0x710 [ 3524.338801][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.338801][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.338801][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.338801][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.338801][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.338801][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.338801][ T72] [ 3524.340548][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3524.340894][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3524.340894][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.340894][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.340894][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.340894][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.340894][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.340894][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.340894][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.340894][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.340894][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.340894][ T72] netlink_unicast+0x449/0x710 [ 3524.340894][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.340894][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.340894][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.340894][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.340894][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.340894][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.340894][ T72] [ 3524.342971][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3524.342971][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.342971][ T72] ipv6_find_idev+0x102/0x170 [ 3524.342971][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.342971][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.342971][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.342971][ T72] netlink_unicast+0x449/0x710 [ 3524.342971][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.342971][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.342971][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.342971][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.342971][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.342971][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.342971][ T72] [ 3524.344642][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3524.344642][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.344642][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.344642][ T72] ipv6_find_idev+0x102/0x170 [ 3524.344642][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.344642][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.344642][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.344642][ T72] netlink_unicast+0x449/0x710 [ 3524.344642][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.344642][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.344642][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.344642][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.344642][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.344642][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.344642][ T72] [ 3524.346611][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3524.346939][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3524.346939][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.346939][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.346939][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.346939][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.346939][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.346939][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.346939][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.346939][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.346939][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.346939][ T72] netlink_unicast+0x449/0x710 [ 3524.346939][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.346939][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.346939][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.346939][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.346939][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.346939][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.346939][ T72] [ 3524.349188][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3524.349188][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.349188][ T72] ipv6_find_idev+0x102/0x170 [ 3524.349188][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.349188][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.349188][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.349188][ T72] netlink_unicast+0x449/0x710 [ 3524.349188][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.349188][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.349188][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.349188][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.349188][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.349188][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.349188][ T72] [ 3524.351023][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3524.351023][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.351023][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.351023][ T72] ipv6_find_idev+0x102/0x170 [ 3524.351023][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.351023][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.351023][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.351023][ T72] netlink_unicast+0x449/0x710 [ 3524.351023][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.351023][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.351023][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.351023][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.351023][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.351023][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.351023][ T72] [ 3524.353001][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3524.353322][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3524.353322][ T72] netdev_get_by_index+0x5e/0x80 [ 3524.353322][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3524.353322][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3524.353322][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3524.353322][ T72] ipv6_add_addr+0x411/0x2000 [ 3524.353322][ T72] inet6_addr_add+0x30e/0xa40 [ 3524.353322][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3524.353322][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.353322][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.353322][ T72] netlink_unicast+0x449/0x710 [ 3524.353322][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.353322][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.353322][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.353322][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.353322][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.353322][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.353322][ T72] [ 3524.355594][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3524.355594][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3524.355594][ T72] ipv6_find_idev+0x102/0x170 [ 3524.355594][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.355594][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.355594][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.355594][ T72] netlink_unicast+0x449/0x710 [ 3524.355594][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.355594][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.355594][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.355594][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.355594][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.355594][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.355594][ T72] [ 3524.357379][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3524.357379][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3524.357379][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3524.357379][ T72] ipv6_find_idev+0x102/0x170 [ 3524.357379][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3524.357379][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3524.357379][ T72] netlink_rcv_skb+0x130/0x360 [ 3524.357379][ T72] netlink_unicast+0x449/0x710 [ 3524.357379][ T72] netlink_sendmsg+0x723/0xbe0 [ 3524.357379][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3524.357379][ T72] ___sys_sendmsg+0xee/0x170 [ 3524.357379][ T72] __sys_sendmsg+0xcd/0x170 [ 3524.357379][ T72] do_syscall_64+0xc6/0x1e0 [ 3524.357379][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3524.357379][ T72] [ 3534.598947][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3534.599452][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3534.599452][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.599452][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.599452][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.599452][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.599452][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.599452][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.599452][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.599452][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.599452][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.599452][ T72] netlink_unicast+0x449/0x710 [ 3534.599452][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.599452][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.599452][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.599452][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.599452][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.599452][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.599452][ T72] [ 3534.601570][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3534.601570][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.601570][ T72] ipv6_find_idev+0x102/0x170 [ 3534.601570][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.601570][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.601570][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.601570][ T72] netlink_unicast+0x449/0x710 [ 3534.601570][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.601570][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.601570][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.601570][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.601570][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.601570][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.601570][ T72] [ 3534.603194][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3534.603194][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.603194][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.603194][ T72] ipv6_find_idev+0x102/0x170 [ 3534.603194][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.603194][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.603194][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.603194][ T72] netlink_unicast+0x449/0x710 [ 3534.603194][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.603194][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.603194][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.603194][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.603194][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.603194][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.603194][ T72] [ 3534.605003][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3534.605287][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3534.605287][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.605287][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.605287][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.605287][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.605287][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.605287][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.605287][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.605287][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.605287][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.605287][ T72] netlink_unicast+0x449/0x710 [ 3534.605287][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.605287][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.605287][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.605287][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.605287][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.605287][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.605287][ T72] [ 3534.607370][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3534.607370][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.607370][ T72] ipv6_find_idev+0x102/0x170 [ 3534.607370][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.607370][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.607370][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.607370][ T72] netlink_unicast+0x449/0x710 [ 3534.607370][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.607370][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.607370][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.607370][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.607370][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.607370][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.607370][ T72] [ 3534.608973][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3534.608973][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.608973][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.608973][ T72] ipv6_find_idev+0x102/0x170 [ 3534.608973][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.608973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.608973][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.608973][ T72] netlink_unicast+0x449/0x710 [ 3534.608973][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.608973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.608973][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.608973][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.608973][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.608973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.608973][ T72] [ 3534.610725][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3534.611014][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3534.611014][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.611014][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.611014][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.611014][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.611014][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.611014][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.611014][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.611014][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.611014][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.611014][ T72] netlink_unicast+0x449/0x710 [ 3534.611014][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.611014][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.611014][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.611014][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.611014][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.611014][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.611014][ T72] [ 3534.613090][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3534.613090][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.613090][ T72] ipv6_find_idev+0x102/0x170 [ 3534.613090][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.613090][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.613090][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.613090][ T72] netlink_unicast+0x449/0x710 [ 3534.613090][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.613090][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.613090][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.613090][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.613090][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.613090][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.613090][ T72] [ 3534.614702][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3534.614702][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.614702][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.614702][ T72] ipv6_find_idev+0x102/0x170 [ 3534.614702][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.614702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.614702][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.614702][ T72] netlink_unicast+0x449/0x710 [ 3534.614702][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.614702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.614702][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.614702][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.614702][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.614702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.614702][ T72] [ 3534.616438][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3534.616702][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3534.616702][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.616702][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.616702][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.616702][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.616702][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.616702][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.616702][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.616702][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.616702][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.616702][ T72] netlink_unicast+0x449/0x710 [ 3534.616702][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.616702][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.616702][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.616702][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.616702][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.616702][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.616702][ T72] [ 3534.618695][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3534.618695][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.618695][ T72] ipv6_find_idev+0x102/0x170 [ 3534.618695][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.618695][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.618695][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.618695][ T72] netlink_unicast+0x449/0x710 [ 3534.618695][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.618695][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.618695][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.618695][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.618695][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.618695][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.618695][ T72] [ 3534.620219][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3534.620219][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.620219][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.620219][ T72] ipv6_find_idev+0x102/0x170 [ 3534.620219][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.620219][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.620219][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.620219][ T72] netlink_unicast+0x449/0x710 [ 3534.620219][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.620219][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.620219][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.620219][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.620219][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.620219][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.620219][ T72] [ 3534.622292][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3534.622896][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3534.622896][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.622896][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.622896][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.622896][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.622896][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.622896][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.622896][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.622896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.622896][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.622896][ T72] netlink_unicast+0x449/0x710 [ 3534.622896][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.622896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.622896][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.622896][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.622896][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.622896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.622896][ T72] [ 3534.624872][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3534.624872][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.624872][ T72] ipv6_find_idev+0x102/0x170 [ 3534.624872][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.624872][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.624872][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.624872][ T72] netlink_unicast+0x449/0x710 [ 3534.624872][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.624872][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.624872][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.624872][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.624872][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.624872][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.624872][ T72] [ 3534.626390][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3534.626390][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.626390][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.626390][ T72] ipv6_find_idev+0x102/0x170 [ 3534.626390][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.626390][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.626390][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.626390][ T72] netlink_unicast+0x449/0x710 [ 3534.626390][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.626390][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.626390][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.626390][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.626390][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.626390][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.626390][ T72] [ 3534.628076][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3534.628359][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3534.628359][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.628359][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.628359][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.628359][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.628359][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.628359][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.628359][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.628359][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.628359][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.628359][ T72] netlink_unicast+0x449/0x710 [ 3534.628359][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.628359][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.628359][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.628359][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.628359][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.628359][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.628359][ T72] [ 3534.630340][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3534.630340][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.630340][ T72] ipv6_find_idev+0x102/0x170 [ 3534.630340][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.630340][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.630340][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.630340][ T72] netlink_unicast+0x449/0x710 [ 3534.630340][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.630340][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.630340][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.630340][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.630340][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.630340][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.630340][ T72] [ 3534.631936][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3534.631936][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.631936][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.631936][ T72] ipv6_find_idev+0x102/0x170 [ 3534.631936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.631936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.631936][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.631936][ T72] netlink_unicast+0x449/0x710 [ 3534.631936][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.631936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.631936][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.631936][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.631936][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.631936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.631936][ T72] [ 3534.633950][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3534.634257][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3534.634257][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.634257][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.634257][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.634257][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.634257][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.634257][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.634257][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.634257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.634257][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.634257][ T72] netlink_unicast+0x449/0x710 [ 3534.634257][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.634257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.634257][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.634257][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.634257][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.634257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.634257][ T72] [ 3534.636418][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3534.636418][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.636418][ T72] ipv6_find_idev+0x102/0x170 [ 3534.636418][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.636418][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.636418][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.636418][ T72] netlink_unicast+0x449/0x710 [ 3534.636418][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.636418][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.636418][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.636418][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.636418][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.636418][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.636418][ T72] [ 3534.638136][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3534.638136][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.638136][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.638136][ T72] ipv6_find_idev+0x102/0x170 [ 3534.638136][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.638136][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.638136][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.638136][ T72] netlink_unicast+0x449/0x710 [ 3534.638136][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.638136][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.638136][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.638136][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.638136][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.638136][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.638136][ T72] [ 3534.640031][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3534.640349][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3534.640349][ T72] netdev_get_by_index+0x5e/0x80 [ 3534.640349][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3534.640349][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3534.640349][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3534.640349][ T72] ipv6_add_addr+0x411/0x2000 [ 3534.640349][ T72] inet6_addr_add+0x30e/0xa40 [ 3534.640349][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3534.640349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.640349][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.640349][ T72] netlink_unicast+0x449/0x710 [ 3534.640349][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.640349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.640349][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.640349][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.640349][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.640349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.640349][ T72] [ 3534.642502][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3534.642502][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3534.642502][ T72] ipv6_find_idev+0x102/0x170 [ 3534.642502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.642502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.642502][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.642502][ T72] netlink_unicast+0x449/0x710 [ 3534.642502][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.642502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.642502][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.642502][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.642502][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.642502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.642502][ T72] [ 3534.644270][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3534.644270][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3534.644270][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3534.644270][ T72] ipv6_find_idev+0x102/0x170 [ 3534.644270][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3534.644270][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3534.644270][ T72] netlink_rcv_skb+0x130/0x360 [ 3534.644270][ T72] netlink_unicast+0x449/0x710 [ 3534.644270][ T72] netlink_sendmsg+0x723/0xbe0 [ 3534.644270][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3534.644270][ T72] ___sys_sendmsg+0xee/0x170 [ 3534.644270][ T72] __sys_sendmsg+0xcd/0x170 [ 3534.644270][ T72] do_syscall_64+0xc6/0x1e0 [ 3534.644270][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3534.644270][ T72] [ 3544.886858][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3544.887356][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3544.887356][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.887356][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.887356][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.887356][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.887356][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.887356][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.887356][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.887356][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.887356][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.887356][ T72] netlink_unicast+0x449/0x710 [ 3544.887356][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.887356][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.887356][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.887356][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.887356][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.887356][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.887356][ T72] [ 3544.889354][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3544.889354][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.889354][ T72] ipv6_find_idev+0x102/0x170 [ 3544.889354][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.889354][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.889354][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.889354][ T72] netlink_unicast+0x449/0x710 [ 3544.889354][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.889354][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.889354][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.889354][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.889354][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.889354][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.889354][ T72] [ 3544.890871][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3544.890871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.890871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.890871][ T72] ipv6_find_idev+0x102/0x170 [ 3544.890871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.890871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.890871][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.890871][ T72] netlink_unicast+0x449/0x710 [ 3544.890871][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.890871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.890871][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.890871][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.890871][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.890871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.890871][ T72] [ 3544.892529][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3544.892819][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3544.892819][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.892819][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.892819][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.892819][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.892819][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.892819][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.892819][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.892819][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.892819][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.892819][ T72] netlink_unicast+0x449/0x710 [ 3544.892819][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.892819][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.892819][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.892819][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.892819][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.892819][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.892819][ T72] [ 3544.894792][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3544.894792][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.894792][ T72] ipv6_find_idev+0x102/0x170 [ 3544.894792][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.894792][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.894792][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.894792][ T72] netlink_unicast+0x449/0x710 [ 3544.894792][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.894792][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.894792][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.894792][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.894792][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.894792][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.894792][ T72] [ 3544.896349][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3544.896349][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.896349][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.896349][ T72] ipv6_find_idev+0x102/0x170 [ 3544.896349][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.896349][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.896349][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.896349][ T72] netlink_unicast+0x449/0x710 [ 3544.896349][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.896349][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.896349][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.896349][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.896349][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.896349][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.896349][ T72] [ 3544.898002][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3544.898262][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3544.898262][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.898262][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.898262][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.898262][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.898262][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.898262][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.898262][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.898262][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.898262][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.898262][ T72] netlink_unicast+0x449/0x710 [ 3544.898262][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.898262][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.898262][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.898262][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.898262][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.898262][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.898262][ T72] [ 3544.900219][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3544.900219][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.900219][ T72] ipv6_find_idev+0x102/0x170 [ 3544.900219][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.900219][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.900219][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.900219][ T72] netlink_unicast+0x449/0x710 [ 3544.900219][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.900219][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.900219][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.900219][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.900219][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.900219][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.900219][ T72] [ 3544.901725][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3544.901725][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.901725][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.901725][ T72] ipv6_find_idev+0x102/0x170 [ 3544.901725][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.901725][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.901725][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.901725][ T72] netlink_unicast+0x449/0x710 [ 3544.901725][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.901725][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.901725][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.901725][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.901725][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.901725][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.901725][ T72] [ 3544.903374][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3544.903631][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3544.903631][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.903631][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.903631][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.903631][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.903631][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.903631][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.903631][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.903631][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.903631][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.903631][ T72] netlink_unicast+0x449/0x710 [ 3544.903631][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.903631][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.903631][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.903631][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.903631][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.903631][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.903631][ T72] [ 3544.905619][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3544.905619][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.905619][ T72] ipv6_find_idev+0x102/0x170 [ 3544.905619][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.905619][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.905619][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.905619][ T72] netlink_unicast+0x449/0x710 [ 3544.905619][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.905619][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.905619][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.905619][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.905619][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.905619][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.905619][ T72] [ 3544.907135][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3544.907135][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.907135][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.907135][ T72] ipv6_find_idev+0x102/0x170 [ 3544.907135][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.907135][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.907135][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.907135][ T72] netlink_unicast+0x449/0x710 [ 3544.907135][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.907135][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.907135][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.907135][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.907135][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.907135][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.907135][ T72] [ 3544.909180][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3544.909441][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3544.909441][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.909441][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.909441][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.909441][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.909441][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.909441][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.909441][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.909441][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.909441][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.909441][ T72] netlink_unicast+0x449/0x710 [ 3544.909441][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.909441][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.909441][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.909441][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.909441][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.909441][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.909441][ T72] [ 3544.911397][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3544.911397][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.911397][ T72] ipv6_find_idev+0x102/0x170 [ 3544.911397][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.911397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.911397][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.911397][ T72] netlink_unicast+0x449/0x710 [ 3544.911397][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.911397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.911397][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.911397][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.911397][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.911397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.911397][ T72] [ 3544.912904][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3544.912904][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.912904][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.912904][ T72] ipv6_find_idev+0x102/0x170 [ 3544.912904][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.912904][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.912904][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.912904][ T72] netlink_unicast+0x449/0x710 [ 3544.912904][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.912904][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.912904][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.912904][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.912904][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.912904][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.912904][ T72] [ 3544.914613][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3544.914929][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3544.914929][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.914929][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.914929][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.914929][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.914929][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.914929][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.914929][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.914929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.914929][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.914929][ T72] netlink_unicast+0x449/0x710 [ 3544.914929][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.914929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.914929][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.914929][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.914929][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.914929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.914929][ T72] [ 3544.917005][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3544.917005][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.917005][ T72] ipv6_find_idev+0x102/0x170 [ 3544.917005][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.917005][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.917005][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.917005][ T72] netlink_unicast+0x449/0x710 [ 3544.917005][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.917005][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.917005][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.917005][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.917005][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.917005][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.917005][ T72] [ 3544.918695][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3544.918695][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.918695][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.918695][ T72] ipv6_find_idev+0x102/0x170 [ 3544.918695][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.918695][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.918695][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.918695][ T72] netlink_unicast+0x449/0x710 [ 3544.918695][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.918695][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.918695][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.918695][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.918695][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.918695][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.918695][ T72] [ 3544.920641][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3544.920956][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3544.920956][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.920956][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.920956][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.920956][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.920956][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.920956][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.920956][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.920956][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.920956][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.920956][ T72] netlink_unicast+0x449/0x710 [ 3544.920956][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.920956][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.920956][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.920956][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.920956][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.920956][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.920956][ T72] [ 3544.923093][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3544.923093][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.923093][ T72] ipv6_find_idev+0x102/0x170 [ 3544.923093][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.923093][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.923093][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.923093][ T72] netlink_unicast+0x449/0x710 [ 3544.923093][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.923093][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.923093][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.923093][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.923093][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.923093][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.923093][ T72] [ 3544.924790][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3544.924790][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.924790][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.924790][ T72] ipv6_find_idev+0x102/0x170 [ 3544.924790][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.924790][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.924790][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.924790][ T72] netlink_unicast+0x449/0x710 [ 3544.924790][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.924790][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.924790][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.924790][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.924790][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.924790][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.924790][ T72] [ 3544.926649][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3544.926961][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3544.926961][ T72] netdev_get_by_index+0x5e/0x80 [ 3544.926961][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3544.926961][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3544.926961][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3544.926961][ T72] ipv6_add_addr+0x411/0x2000 [ 3544.926961][ T72] inet6_addr_add+0x30e/0xa40 [ 3544.926961][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3544.926961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.926961][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.926961][ T72] netlink_unicast+0x449/0x710 [ 3544.926961][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.926961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.926961][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.926961][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.926961][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.926961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.926961][ T72] [ 3544.929621][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3544.929621][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3544.929621][ T72] ipv6_find_idev+0x102/0x170 [ 3544.929621][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.929621][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.929621][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.929621][ T72] netlink_unicast+0x449/0x710 [ 3544.929621][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.929621][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.929621][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.929621][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.929621][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.929621][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.929621][ T72] [ 3544.931692][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3544.931692][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3544.931692][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3544.931692][ T72] ipv6_find_idev+0x102/0x170 [ 3544.931692][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3544.931692][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3544.931692][ T72] netlink_rcv_skb+0x130/0x360 [ 3544.931692][ T72] netlink_unicast+0x449/0x710 [ 3544.931692][ T72] netlink_sendmsg+0x723/0xbe0 [ 3544.931692][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3544.931692][ T72] ___sys_sendmsg+0xee/0x170 [ 3544.931692][ T72] __sys_sendmsg+0xcd/0x170 [ 3544.931692][ T72] do_syscall_64+0xc6/0x1e0 [ 3544.931692][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3544.931692][ T72] [ 3554.934802][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3554.935305][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3554.935305][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.935305][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.935305][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.935305][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.935305][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.935305][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.935305][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.935305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.935305][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.935305][ T72] netlink_unicast+0x449/0x710 [ 3554.935305][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.935305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.935305][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.935305][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.935305][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.935305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.935305][ T72] [ 3554.937378][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3554.937378][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.937378][ T72] ipv6_find_idev+0x102/0x170 [ 3554.937378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.937378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.937378][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.937378][ T72] netlink_unicast+0x449/0x710 [ 3554.937378][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.937378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.937378][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.937378][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.937378][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.937378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.937378][ T72] [ 3554.938896][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3554.938896][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.938896][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.938896][ T72] ipv6_find_idev+0x102/0x170 [ 3554.938896][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.938896][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.938896][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.938896][ T72] netlink_unicast+0x449/0x710 [ 3554.938896][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.938896][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.938896][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.938896][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.938896][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.938896][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.938896][ T72] [ 3554.940568][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3554.940861][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3554.940861][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.940861][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.940861][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.940861][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.940861][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.940861][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.940861][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.940861][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.940861][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.940861][ T72] netlink_unicast+0x449/0x710 [ 3554.940861][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.940861][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.940861][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.940861][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.940861][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.940861][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.940861][ T72] [ 3554.942827][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3554.942827][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.942827][ T72] ipv6_find_idev+0x102/0x170 [ 3554.942827][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.942827][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.942827][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.942827][ T72] netlink_unicast+0x449/0x710 [ 3554.942827][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.942827][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.942827][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.942827][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.942827][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.942827][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.942827][ T72] [ 3554.944343][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3554.944343][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.944343][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.944343][ T72] ipv6_find_idev+0x102/0x170 [ 3554.944343][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.944343][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.944343][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.944343][ T72] netlink_unicast+0x449/0x710 [ 3554.944343][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.944343][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.944343][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.944343][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.944343][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.944343][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.944343][ T72] [ 3554.946019][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3554.946283][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3554.946283][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.946283][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.946283][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.946283][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.946283][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.946283][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.946283][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.946283][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.946283][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.946283][ T72] netlink_unicast+0x449/0x710 [ 3554.946283][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.946283][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.946283][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.946283][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.946283][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.946283][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.946283][ T72] [ 3554.948257][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3554.948257][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.948257][ T72] ipv6_find_idev+0x102/0x170 [ 3554.948257][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.948257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.948257][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.948257][ T72] netlink_unicast+0x449/0x710 [ 3554.948257][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.948257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.948257][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.948257][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.948257][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.948257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.948257][ T72] [ 3554.949770][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3554.949770][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.949770][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.949770][ T72] ipv6_find_idev+0x102/0x170 [ 3554.949770][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.949770][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.949770][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.949770][ T72] netlink_unicast+0x449/0x710 [ 3554.949770][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.949770][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.949770][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.949770][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.949770][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.949770][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.949770][ T72] [ 3554.951429][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3554.951693][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3554.951693][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.951693][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.951693][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.951693][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.951693][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.951693][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.951693][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.951693][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.951693][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.951693][ T72] netlink_unicast+0x449/0x710 [ 3554.951693][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.951693][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.951693][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.951693][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.951693][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.951693][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.951693][ T72] [ 3554.953659][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3554.953659][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.953659][ T72] ipv6_find_idev+0x102/0x170 [ 3554.953659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.953659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.953659][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.953659][ T72] netlink_unicast+0x449/0x710 [ 3554.953659][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.953659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.953659][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.953659][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.953659][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.953659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.953659][ T72] [ 3554.955180][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3554.955180][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.955180][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.955180][ T72] ipv6_find_idev+0x102/0x170 [ 3554.955180][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.955180][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.955180][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.955180][ T72] netlink_unicast+0x449/0x710 [ 3554.955180][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.955180][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.955180][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.955180][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.955180][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.955180][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.955180][ T72] [ 3554.957622][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3554.958217][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3554.958217][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.958217][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.958217][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.958217][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.958217][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.958217][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.958217][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.958217][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.958217][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.958217][ T72] netlink_unicast+0x449/0x710 [ 3554.958217][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.958217][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.958217][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.958217][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.958217][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.958217][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.958217][ T72] [ 3554.960181][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3554.960181][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.960181][ T72] ipv6_find_idev+0x102/0x170 [ 3554.960181][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.960181][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.960181][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.960181][ T72] netlink_unicast+0x449/0x710 [ 3554.960181][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.960181][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.960181][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.960181][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.960181][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.960181][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.960181][ T72] [ 3554.961683][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3554.961683][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.961683][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.961683][ T72] ipv6_find_idev+0x102/0x170 [ 3554.961683][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.961683][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.961683][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.961683][ T72] netlink_unicast+0x449/0x710 [ 3554.961683][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.961683][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.961683][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.961683][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.961683][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.961683][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.961683][ T72] [ 3554.963470][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3554.963742][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3554.963742][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.963742][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.963742][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.963742][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.963742][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.963742][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.963742][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.963742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.963742][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.963742][ T72] netlink_unicast+0x449/0x710 [ 3554.963742][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.963742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.963742][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.963742][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.963742][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.963742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.963742][ T72] [ 3554.965791][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3554.965791][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.965791][ T72] ipv6_find_idev+0x102/0x170 [ 3554.965791][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.965791][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.965791][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.965791][ T72] netlink_unicast+0x449/0x710 [ 3554.965791][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.965791][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.965791][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.965791][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.965791][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.965791][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.965791][ T72] [ 3554.967430][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3554.967430][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.967430][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.967430][ T72] ipv6_find_idev+0x102/0x170 [ 3554.967430][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.967430][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.967430][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.967430][ T72] netlink_unicast+0x449/0x710 [ 3554.967430][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.967430][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.967430][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.967430][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.967430][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.967430][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.967430][ T72] [ 3554.969441][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3554.969716][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3554.969716][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.969716][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.969716][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.969716][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.969716][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.969716][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.969716][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.969716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.969716][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.969716][ T72] netlink_unicast+0x449/0x710 [ 3554.969716][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.969716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.969716][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.969716][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.969716][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.969716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.969716][ T72] [ 3554.971936][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3554.971936][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.971936][ T72] ipv6_find_idev+0x102/0x170 [ 3554.971936][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.971936][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.971936][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.971936][ T72] netlink_unicast+0x449/0x710 [ 3554.971936][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.971936][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.971936][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.971936][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.971936][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.971936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.971936][ T72] [ 3554.973754][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3554.973754][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.973754][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.973754][ T72] ipv6_find_idev+0x102/0x170 [ 3554.973754][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.973754][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.973754][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.973754][ T72] netlink_unicast+0x449/0x710 [ 3554.973754][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.973754][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.973754][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.973754][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.973754][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.973754][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.973754][ T72] [ 3554.975718][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3554.976041][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3554.976041][ T72] netdev_get_by_index+0x5e/0x80 [ 3554.976041][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3554.976041][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3554.976041][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3554.976041][ T72] ipv6_add_addr+0x411/0x2000 [ 3554.976041][ T72] inet6_addr_add+0x30e/0xa40 [ 3554.976041][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3554.976041][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.976041][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.976041][ T72] netlink_unicast+0x449/0x710 [ 3554.976041][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.976041][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.976041][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.976041][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.976041][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.976041][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.976041][ T72] [ 3554.978182][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3554.978182][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3554.978182][ T72] ipv6_find_idev+0x102/0x170 [ 3554.978182][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.978182][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.978182][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.978182][ T72] netlink_unicast+0x449/0x710 [ 3554.978182][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.978182][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.978182][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.978182][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.978182][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.978182][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.978182][ T72] [ 3554.979877][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3554.979877][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3554.979877][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3554.979877][ T72] ipv6_find_idev+0x102/0x170 [ 3554.979877][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3554.979877][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3554.979877][ T72] netlink_rcv_skb+0x130/0x360 [ 3554.979877][ T72] netlink_unicast+0x449/0x710 [ 3554.979877][ T72] netlink_sendmsg+0x723/0xbe0 [ 3554.979877][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3554.979877][ T72] ___sys_sendmsg+0xee/0x170 [ 3554.979877][ T72] __sys_sendmsg+0xcd/0x170 [ 3554.979877][ T72] do_syscall_64+0xc6/0x1e0 [ 3554.979877][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3554.979877][ T72] [ 3565.166850][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3565.167251][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3565.167251][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.167251][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.167251][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.167251][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.167251][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.167251][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.167251][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.167251][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.167251][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.167251][ T72] netlink_unicast+0x449/0x710 [ 3565.167251][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.167251][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.167251][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.167251][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.167251][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.167251][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.167251][ T72] [ 3565.169252][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3565.169252][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.169252][ T72] ipv6_find_idev+0x102/0x170 [ 3565.169252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.169252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.169252][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.169252][ T72] netlink_unicast+0x449/0x710 [ 3565.169252][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.169252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.169252][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.169252][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.169252][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.169252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.169252][ T72] [ 3565.170777][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3565.170777][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.170777][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.170777][ T72] ipv6_find_idev+0x102/0x170 [ 3565.170777][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.170777][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.170777][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.170777][ T72] netlink_unicast+0x449/0x710 [ 3565.170777][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.170777][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.170777][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.170777][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.170777][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.170777][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.170777][ T72] [ 3565.172451][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3565.172723][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3565.172723][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.172723][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.172723][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.172723][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.172723][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.172723][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.172723][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.172723][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.172723][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.172723][ T72] netlink_unicast+0x449/0x710 [ 3565.172723][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.172723][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.172723][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.172723][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.172723][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.172723][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.172723][ T72] [ 3565.174709][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3565.174709][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.174709][ T72] ipv6_find_idev+0x102/0x170 [ 3565.174709][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.174709][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.174709][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.174709][ T72] netlink_unicast+0x449/0x710 [ 3565.174709][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.174709][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.174709][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.174709][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.174709][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.174709][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.174709][ T72] [ 3565.176757][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3565.176757][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.176757][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.176757][ T72] ipv6_find_idev+0x102/0x170 [ 3565.176757][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.176757][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.176757][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.176757][ T72] netlink_unicast+0x449/0x710 [ 3565.176757][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.176757][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.176757][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.176757][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.176757][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.176757][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.176757][ T72] [ 3565.179284][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3565.179651][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3565.179651][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.179651][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.179651][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.179651][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.179651][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.179651][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.179651][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.179651][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.179651][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.179651][ T72] netlink_unicast+0x449/0x710 [ 3565.179651][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.179651][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.179651][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.179651][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.179651][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.179651][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.179651][ T72] [ 3565.182646][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3565.182646][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.182646][ T72] ipv6_find_idev+0x102/0x170 [ 3565.182646][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.182646][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.182646][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.182646][ T72] netlink_unicast+0x449/0x710 [ 3565.182646][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.182646][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.182646][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.182646][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.182646][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.182646][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.182646][ T72] [ 3565.184944][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3565.184944][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.184944][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.184944][ T72] ipv6_find_idev+0x102/0x170 [ 3565.184944][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.184944][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.184944][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.184944][ T72] netlink_unicast+0x449/0x710 [ 3565.184944][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.184944][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.184944][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.184944][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.184944][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.184944][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.184944][ T72] [ 3565.187560][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3565.187997][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3565.187997][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.187997][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.187997][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.187997][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.187997][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.187997][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.187997][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.187997][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.187997][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.187997][ T72] netlink_unicast+0x449/0x710 [ 3565.187997][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.187997][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.187997][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.187997][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.187997][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.187997][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.187997][ T72] [ 3565.191144][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3565.191144][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.191144][ T72] ipv6_find_idev+0x102/0x170 [ 3565.191144][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.191144][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.191144][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.191144][ T72] netlink_unicast+0x449/0x710 [ 3565.191144][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.191144][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.191144][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.191144][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.191144][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.191144][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.191144][ T72] [ 3565.193366][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3565.193366][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.193366][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.193366][ T72] ipv6_find_idev+0x102/0x170 [ 3565.193366][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.193366][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.193366][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.193366][ T72] netlink_unicast+0x449/0x710 [ 3565.193366][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.193366][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.193366][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.193366][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.193366][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.193366][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.193366][ T72] [ 3565.195923][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3565.196259][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3565.196259][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.196259][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.196259][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.196259][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.196259][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.196259][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.196259][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.196259][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.196259][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.196259][ T72] netlink_unicast+0x449/0x710 [ 3565.196259][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.196259][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.196259][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.196259][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.196259][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.196259][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.196259][ T72] [ 3565.199196][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3565.199196][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.199196][ T72] ipv6_find_idev+0x102/0x170 [ 3565.199196][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.199196][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.199196][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.199196][ T72] netlink_unicast+0x449/0x710 [ 3565.199196][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.199196][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.199196][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.199196][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.199196][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.199196][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.199196][ T72] [ 3565.201589][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3565.201589][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.201589][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.201589][ T72] ipv6_find_idev+0x102/0x170 [ 3565.201589][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.201589][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.201589][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.201589][ T72] netlink_unicast+0x449/0x710 [ 3565.201589][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.201589][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.201589][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.201589][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.201589][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.201589][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.201589][ T72] [ 3565.204510][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3565.205016][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3565.205016][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.205016][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.205016][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.205016][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.205016][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.205016][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.205016][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.205016][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.205016][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.205016][ T72] netlink_unicast+0x449/0x710 [ 3565.205016][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.205016][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.205016][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.205016][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.205016][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.205016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.205016][ T72] [ 3565.208351][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3565.208351][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.208351][ T72] ipv6_find_idev+0x102/0x170 [ 3565.208351][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.208351][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.208351][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.208351][ T72] netlink_unicast+0x449/0x710 [ 3565.208351][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.208351][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.208351][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.208351][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.208351][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.208351][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.208351][ T72] [ 3565.210987][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3565.210987][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.210987][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.210987][ T72] ipv6_find_idev+0x102/0x170 [ 3565.210987][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.210987][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.210987][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.210987][ T72] netlink_unicast+0x449/0x710 [ 3565.210987][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.210987][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.210987][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.210987][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.210987][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.210987][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.210987][ T72] [ 3565.213997][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3565.214422][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3565.214422][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.214422][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.214422][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.214422][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.214422][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.214422][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.214422][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.214422][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.214422][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.214422][ T72] netlink_unicast+0x449/0x710 [ 3565.214422][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.214422][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.214422][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.214422][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.214422][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.214422][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.214422][ T72] [ 3565.218052][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3565.218052][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.218052][ T72] ipv6_find_idev+0x102/0x170 [ 3565.218052][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.218052][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.218052][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.218052][ T72] netlink_unicast+0x449/0x710 [ 3565.218052][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.218052][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.218052][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.218052][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.218052][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.218052][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.218052][ T72] [ 3565.220755][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3565.220755][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.220755][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.220755][ T72] ipv6_find_idev+0x102/0x170 [ 3565.220755][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.220755][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.220755][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.220755][ T72] netlink_unicast+0x449/0x710 [ 3565.220755][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.220755][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.220755][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.220755][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.220755][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.220755][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.220755][ T72] [ 3565.223785][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3565.224208][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3565.224208][ T72] netdev_get_by_index+0x5e/0x80 [ 3565.224208][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3565.224208][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3565.224208][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3565.224208][ T72] ipv6_add_addr+0x411/0x2000 [ 3565.224208][ T72] inet6_addr_add+0x30e/0xa40 [ 3565.224208][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3565.224208][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.224208][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.224208][ T72] netlink_unicast+0x449/0x710 [ 3565.224208][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.224208][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.224208][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.224208][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.224208][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.224208][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.224208][ T72] [ 3565.227712][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3565.227712][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3565.227712][ T72] ipv6_find_idev+0x102/0x170 [ 3565.227712][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.227712][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.227712][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.227712][ T72] netlink_unicast+0x449/0x710 [ 3565.227712][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.227712][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.227712][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.227712][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.227712][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.227712][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.227712][ T72] [ 3565.230559][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3565.230559][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3565.230559][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3565.230559][ T72] ipv6_find_idev+0x102/0x170 [ 3565.230559][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3565.230559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3565.230559][ T72] netlink_rcv_skb+0x130/0x360 [ 3565.230559][ T72] netlink_unicast+0x449/0x710 [ 3565.230559][ T72] netlink_sendmsg+0x723/0xbe0 [ 3565.230559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3565.230559][ T72] ___sys_sendmsg+0xee/0x170 [ 3565.230559][ T72] __sys_sendmsg+0xcd/0x170 [ 3565.230559][ T72] do_syscall_64+0xc6/0x1e0 [ 3565.230559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3565.230559][ T72] [ 3575.422793][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3575.423216][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3575.423216][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.423216][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.423216][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.423216][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.423216][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.423216][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.423216][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.423216][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.423216][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.423216][ T72] netlink_unicast+0x449/0x710 [ 3575.423216][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.423216][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.423216][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.423216][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.423216][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.423216][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.423216][ T72] [ 3575.425334][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3575.425334][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.425334][ T72] ipv6_find_idev+0x102/0x170 [ 3575.425334][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.425334][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.425334][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.425334][ T72] netlink_unicast+0x449/0x710 [ 3575.425334][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.425334][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.425334][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.425334][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.425334][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.425334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.425334][ T72] [ 3575.426867][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3575.426867][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.426867][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.426867][ T72] ipv6_find_idev+0x102/0x170 [ 3575.426867][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.426867][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.426867][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.426867][ T72] netlink_unicast+0x449/0x710 [ 3575.426867][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.426867][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.426867][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.426867][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.426867][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.426867][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.426867][ T72] [ 3575.428568][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3575.428851][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3575.428851][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.428851][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.428851][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.428851][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.428851][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.428851][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.428851][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.428851][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.428851][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.428851][ T72] netlink_unicast+0x449/0x710 [ 3575.428851][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.428851][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.428851][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.428851][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.428851][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.428851][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.428851][ T72] [ 3575.430847][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3575.430847][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.430847][ T72] ipv6_find_idev+0x102/0x170 [ 3575.430847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.430847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.430847][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.430847][ T72] netlink_unicast+0x449/0x710 [ 3575.430847][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.430847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.430847][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.430847][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.430847][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.430847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.430847][ T72] [ 3575.432378][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3575.432378][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.432378][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.432378][ T72] ipv6_find_idev+0x102/0x170 [ 3575.432378][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.432378][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.432378][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.432378][ T72] netlink_unicast+0x449/0x710 [ 3575.432378][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.432378][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.432378][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.432378][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.432378][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.432378][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.432378][ T72] [ 3575.434051][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3575.434314][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3575.434314][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.434314][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.434314][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.434314][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.434314][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.434314][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.434314][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.434314][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.434314][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.434314][ T72] netlink_unicast+0x449/0x710 [ 3575.434314][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.434314][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.434314][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.434314][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.434314][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.434314][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.434314][ T72] [ 3575.436307][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3575.436307][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.436307][ T72] ipv6_find_idev+0x102/0x170 [ 3575.436307][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.436307][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.436307][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.436307][ T72] netlink_unicast+0x449/0x710 [ 3575.436307][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.436307][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.436307][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.436307][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.436307][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.436307][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.436307][ T72] [ 3575.437862][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3575.437862][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.437862][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.437862][ T72] ipv6_find_idev+0x102/0x170 [ 3575.437862][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.437862][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.437862][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.437862][ T72] netlink_unicast+0x449/0x710 [ 3575.437862][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.437862][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.437862][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.437862][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.437862][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.437862][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.437862][ T72] [ 3575.439529][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3575.440239][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3575.440239][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.440239][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.440239][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.440239][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.440239][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.440239][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.440239][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.440239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.440239][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.440239][ T72] netlink_unicast+0x449/0x710 [ 3575.440239][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.440239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.440239][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.440239][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.440239][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.440239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.440239][ T72] [ 3575.442213][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3575.442213][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.442213][ T72] ipv6_find_idev+0x102/0x170 [ 3575.442213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.442213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.442213][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.442213][ T72] netlink_unicast+0x449/0x710 [ 3575.442213][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.442213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.442213][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.442213][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.442213][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.442213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.442213][ T72] [ 3575.443739][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3575.443739][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.443739][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.443739][ T72] ipv6_find_idev+0x102/0x170 [ 3575.443739][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.443739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.443739][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.443739][ T72] netlink_unicast+0x449/0x710 [ 3575.443739][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.443739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.443739][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.443739][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.443739][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.443739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.443739][ T72] [ 3575.445454][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3575.445765][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3575.445765][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.445765][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.445765][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.445765][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.445765][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.445765][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.445765][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.445765][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.445765][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.445765][ T72] netlink_unicast+0x449/0x710 [ 3575.445765][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.445765][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.445765][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.445765][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.445765][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.445765][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.445765][ T72] [ 3575.447742][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3575.447742][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.447742][ T72] ipv6_find_idev+0x102/0x170 [ 3575.447742][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.447742][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.447742][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.447742][ T72] netlink_unicast+0x449/0x710 [ 3575.447742][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.447742][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.447742][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.447742][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.447742][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.447742][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.447742][ T72] [ 3575.449337][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3575.449337][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.449337][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.449337][ T72] ipv6_find_idev+0x102/0x170 [ 3575.449337][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.449337][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.449337][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.449337][ T72] netlink_unicast+0x449/0x710 [ 3575.449337][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.449337][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.449337][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.449337][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.449337][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.449337][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.449337][ T72] [ 3575.451122][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3575.451439][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3575.451439][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.451439][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.451439][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.451439][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.451439][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.451439][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.451439][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.451439][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.451439][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.451439][ T72] netlink_unicast+0x449/0x710 [ 3575.451439][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.451439][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.451439][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.451439][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.451439][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.451439][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.451439][ T72] [ 3575.453580][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3575.453580][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.453580][ T72] ipv6_find_idev+0x102/0x170 [ 3575.453580][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.453580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.453580][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.453580][ T72] netlink_unicast+0x449/0x710 [ 3575.453580][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.453580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.453580][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.453580][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.453580][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.453580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.453580][ T72] [ 3575.455267][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3575.455267][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.455267][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.455267][ T72] ipv6_find_idev+0x102/0x170 [ 3575.455267][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.455267][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.455267][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.455267][ T72] netlink_unicast+0x449/0x710 [ 3575.455267][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.455267][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.455267][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.455267][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.455267][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.455267][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.455267][ T72] [ 3575.457183][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3575.457500][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3575.457500][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.457500][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.457500][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.457500][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.457500][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.457500][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.457500][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.457500][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.457500][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.457500][ T72] netlink_unicast+0x449/0x710 [ 3575.457500][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.457500][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.457500][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.457500][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.457500][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.457500][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.457500][ T72] [ 3575.459632][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3575.459632][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.459632][ T72] ipv6_find_idev+0x102/0x170 [ 3575.459632][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.459632][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.459632][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.459632][ T72] netlink_unicast+0x449/0x710 [ 3575.459632][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.459632][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.459632][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.459632][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.459632][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.459632][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.459632][ T72] [ 3575.461421][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3575.461421][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.461421][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.461421][ T72] ipv6_find_idev+0x102/0x170 [ 3575.461421][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.461421][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.461421][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.461421][ T72] netlink_unicast+0x449/0x710 [ 3575.461421][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.461421][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.461421][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.461421][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.461421][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.461421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.461421][ T72] [ 3575.463264][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3575.463603][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3575.463603][ T72] netdev_get_by_index+0x5e/0x80 [ 3575.463603][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3575.463603][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3575.463603][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3575.463603][ T72] ipv6_add_addr+0x411/0x2000 [ 3575.463603][ T72] inet6_addr_add+0x30e/0xa40 [ 3575.463603][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3575.463603][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.463603][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.463603][ T72] netlink_unicast+0x449/0x710 [ 3575.463603][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.463603][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.463603][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.463603][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.463603][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.463603][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.463603][ T72] [ 3575.465813][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3575.465813][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3575.465813][ T72] ipv6_find_idev+0x102/0x170 [ 3575.465813][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.465813][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.465813][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.465813][ T72] netlink_unicast+0x449/0x710 [ 3575.465813][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.465813][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.465813][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.465813][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.465813][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.465813][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.465813][ T72] [ 3575.467477][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3575.467477][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3575.467477][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3575.467477][ T72] ipv6_find_idev+0x102/0x170 [ 3575.467477][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3575.467477][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3575.467477][ T72] netlink_rcv_skb+0x130/0x360 [ 3575.467477][ T72] netlink_unicast+0x449/0x710 [ 3575.467477][ T72] netlink_sendmsg+0x723/0xbe0 [ 3575.467477][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3575.467477][ T72] ___sys_sendmsg+0xee/0x170 [ 3575.467477][ T72] __sys_sendmsg+0xcd/0x170 [ 3575.467477][ T72] do_syscall_64+0xc6/0x1e0 [ 3575.467477][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3575.467477][ T72] [ 3585.839034][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3585.839450][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3585.839450][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.839450][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.839450][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.839450][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.839450][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.839450][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.839450][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.839450][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.839450][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.839450][ T72] netlink_unicast+0x449/0x710 [ 3585.839450][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.839450][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.839450][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.839450][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.839450][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.839450][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.839450][ T72] [ 3585.841451][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3585.841451][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.841451][ T72] ipv6_find_idev+0x102/0x170 [ 3585.841451][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.841451][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.841451][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.841451][ T72] netlink_unicast+0x449/0x710 [ 3585.841451][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.841451][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.841451][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.841451][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.841451][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.841451][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.841451][ T72] [ 3585.842967][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3585.842967][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.842967][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.842967][ T72] ipv6_find_idev+0x102/0x170 [ 3585.842967][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.842967][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.842967][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.842967][ T72] netlink_unicast+0x449/0x710 [ 3585.842967][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.842967][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.842967][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.842967][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.842967][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.842967][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.842967][ T72] [ 3585.844713][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3585.845003][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3585.845003][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.845003][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.845003][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.845003][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.845003][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.845003][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.845003][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.845003][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.845003][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.845003][ T72] netlink_unicast+0x449/0x710 [ 3585.845003][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.845003][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.845003][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.845003][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.845003][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.845003][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.845003][ T72] [ 3585.846964][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3585.846964][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.846964][ T72] ipv6_find_idev+0x102/0x170 [ 3585.846964][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.846964][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.846964][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.846964][ T72] netlink_unicast+0x449/0x710 [ 3585.846964][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.846964][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.846964][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.846964][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.846964][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.846964][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.846964][ T72] [ 3585.848480][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3585.848480][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.848480][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.848480][ T72] ipv6_find_idev+0x102/0x170 [ 3585.848480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.848480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.848480][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.848480][ T72] netlink_unicast+0x449/0x710 [ 3585.848480][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.848480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.848480][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.848480][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.848480][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.848480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.848480][ T72] [ 3585.850127][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3585.850387][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3585.850387][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.850387][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.850387][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.850387][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.850387][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.850387][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.850387][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.850387][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.850387][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.850387][ T72] netlink_unicast+0x449/0x710 [ 3585.850387][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.850387][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.850387][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.850387][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.850387][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.850387][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.850387][ T72] [ 3585.852358][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3585.852358][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.852358][ T72] ipv6_find_idev+0x102/0x170 [ 3585.852358][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.852358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.852358][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.852358][ T72] netlink_unicast+0x449/0x710 [ 3585.852358][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.852358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.852358][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.852358][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.852358][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.852358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.852358][ T72] [ 3585.853863][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3585.853863][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.853863][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.853863][ T72] ipv6_find_idev+0x102/0x170 [ 3585.853863][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.853863][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.853863][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.853863][ T72] netlink_unicast+0x449/0x710 [ 3585.853863][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.853863][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.853863][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.853863][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.853863][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.853863][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.853863][ T72] [ 3585.855517][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3585.856229][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3585.856229][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.856229][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.856229][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.856229][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.856229][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.856229][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.856229][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.856229][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.856229][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.856229][ T72] netlink_unicast+0x449/0x710 [ 3585.856229][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.856229][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.856229][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.856229][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.856229][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.856229][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.856229][ T72] [ 3585.858181][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3585.858181][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.858181][ T72] ipv6_find_idev+0x102/0x170 [ 3585.858181][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.858181][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.858181][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.858181][ T72] netlink_unicast+0x449/0x710 [ 3585.858181][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.858181][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.858181][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.858181][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.858181][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.858181][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.858181][ T72] [ 3585.859682][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3585.859682][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.859682][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.859682][ T72] ipv6_find_idev+0x102/0x170 [ 3585.859682][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.859682][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.859682][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.859682][ T72] netlink_unicast+0x449/0x710 [ 3585.859682][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.859682][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.859682][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.859682][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.859682][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.859682][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.859682][ T72] [ 3585.861404][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3585.861672][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3585.861672][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.861672][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.861672][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.861672][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.861672][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.861672][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.861672][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.861672][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.861672][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.861672][ T72] netlink_unicast+0x449/0x710 [ 3585.861672][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.861672][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.861672][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.861672][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.861672][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.861672][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.861672][ T72] [ 3585.863626][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3585.863626][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.863626][ T72] ipv6_find_idev+0x102/0x170 [ 3585.863626][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.863626][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.863626][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.863626][ T72] netlink_unicast+0x449/0x710 [ 3585.863626][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.863626][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.863626][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.863626][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.863626][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.863626][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.863626][ T72] [ 3585.865152][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3585.865152][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.865152][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.865152][ T72] ipv6_find_idev+0x102/0x170 [ 3585.865152][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.865152][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.865152][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.865152][ T72] netlink_unicast+0x449/0x710 [ 3585.865152][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.865152][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.865152][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.865152][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.865152][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.865152][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.865152][ T72] [ 3585.866846][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3585.867106][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3585.867106][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.867106][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.867106][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.867106][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.867106][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.867106][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.867106][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.867106][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.867106][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.867106][ T72] netlink_unicast+0x449/0x710 [ 3585.867106][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.867106][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.867106][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.867106][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.867106][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.867106][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.867106][ T72] [ 3585.869130][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3585.869130][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.869130][ T72] ipv6_find_idev+0x102/0x170 [ 3585.869130][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.869130][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.869130][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.869130][ T72] netlink_unicast+0x449/0x710 [ 3585.869130][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.869130][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.869130][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.869130][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.869130][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.869130][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.869130][ T72] [ 3585.870822][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3585.870822][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.870822][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.870822][ T72] ipv6_find_idev+0x102/0x170 [ 3585.870822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.870822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.870822][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.870822][ T72] netlink_unicast+0x449/0x710 [ 3585.870822][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.870822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.870822][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.870822][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.870822][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.870822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.870822][ T72] [ 3585.872693][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3585.873005][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3585.873005][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.873005][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.873005][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.873005][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.873005][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.873005][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.873005][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.873005][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.873005][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.873005][ T72] netlink_unicast+0x449/0x710 [ 3585.873005][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.873005][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.873005][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.873005][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.873005][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.873005][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.873005][ T72] [ 3585.875159][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3585.875159][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.875159][ T72] ipv6_find_idev+0x102/0x170 [ 3585.875159][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.875159][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.875159][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.875159][ T72] netlink_unicast+0x449/0x710 [ 3585.875159][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.875159][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.875159][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.875159][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.875159][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.875159][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.875159][ T72] [ 3585.876850][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3585.876850][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.876850][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.876850][ T72] ipv6_find_idev+0x102/0x170 [ 3585.876850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.876850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.876850][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.876850][ T72] netlink_unicast+0x449/0x710 [ 3585.876850][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.876850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.876850][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.876850][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.876850][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.876850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.876850][ T72] [ 3585.878850][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3585.879112][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3585.879112][ T72] netdev_get_by_index+0x5e/0x80 [ 3585.879112][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3585.879112][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3585.879112][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3585.879112][ T72] ipv6_add_addr+0x411/0x2000 [ 3585.879112][ T72] inet6_addr_add+0x30e/0xa40 [ 3585.879112][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3585.879112][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.879112][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.879112][ T72] netlink_unicast+0x449/0x710 [ 3585.879112][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.879112][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.879112][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.879112][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.879112][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.879112][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.879112][ T72] [ 3585.881245][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3585.881245][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3585.881245][ T72] ipv6_find_idev+0x102/0x170 [ 3585.881245][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.881245][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.881245][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.881245][ T72] netlink_unicast+0x449/0x710 [ 3585.881245][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.881245][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.881245][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.881245][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.881245][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.881245][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.881245][ T72] [ 3585.882960][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3585.882960][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3585.882960][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3585.882960][ T72] ipv6_find_idev+0x102/0x170 [ 3585.882960][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3585.882960][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3585.882960][ T72] netlink_rcv_skb+0x130/0x360 [ 3585.882960][ T72] netlink_unicast+0x449/0x710 [ 3585.882960][ T72] netlink_sendmsg+0x723/0xbe0 [ 3585.882960][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3585.882960][ T72] ___sys_sendmsg+0xee/0x170 [ 3585.882960][ T72] __sys_sendmsg+0xcd/0x170 [ 3585.882960][ T72] do_syscall_64+0xc6/0x1e0 [ 3585.882960][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3585.882960][ T72] [ 3596.126918][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3596.127397][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3596.127397][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.127397][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.127397][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.127397][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.127397][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.127397][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.127397][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.127397][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.127397][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.127397][ T72] netlink_unicast+0x449/0x710 [ 3596.127397][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.127397][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.127397][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.127397][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.127397][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.127397][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.127397][ T72] [ 3596.129374][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3596.129374][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.129374][ T72] ipv6_find_idev+0x102/0x170 [ 3596.129374][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.129374][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.129374][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.129374][ T72] netlink_unicast+0x449/0x710 [ 3596.129374][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.129374][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.129374][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.129374][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.129374][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.129374][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.129374][ T72] [ 3596.130884][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3596.130884][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.130884][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.130884][ T72] ipv6_find_idev+0x102/0x170 [ 3596.130884][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.130884][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.130884][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.130884][ T72] netlink_unicast+0x449/0x710 [ 3596.130884][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.130884][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.130884][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.130884][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.130884][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.130884][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.130884][ T72] [ 3596.132550][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3596.132841][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3596.132841][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.132841][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.132841][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.132841][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.132841][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.132841][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.132841][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.132841][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.132841][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.132841][ T72] netlink_unicast+0x449/0x710 [ 3596.132841][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.132841][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.132841][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.132841][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.132841][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.132841][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.132841][ T72] [ 3596.134822][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3596.134822][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.134822][ T72] ipv6_find_idev+0x102/0x170 [ 3596.134822][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.134822][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.134822][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.134822][ T72] netlink_unicast+0x449/0x710 [ 3596.134822][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.134822][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.134822][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.134822][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.134822][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.134822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.134822][ T72] [ 3596.136333][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3596.136333][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.136333][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.136333][ T72] ipv6_find_idev+0x102/0x170 [ 3596.136333][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.136333][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.136333][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.136333][ T72] netlink_unicast+0x449/0x710 [ 3596.136333][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.136333][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.136333][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.136333][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.136333][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.136333][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.136333][ T72] [ 3596.137980][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3596.138241][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3596.138241][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.138241][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.138241][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.138241][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.138241][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.138241][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.138241][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.138241][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.138241][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.138241][ T72] netlink_unicast+0x449/0x710 [ 3596.138241][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.138241][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.138241][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.138241][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.138241][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.138241][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.138241][ T72] [ 3596.140257][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3596.140257][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.140257][ T72] ipv6_find_idev+0x102/0x170 [ 3596.140257][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.140257][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.140257][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.140257][ T72] netlink_unicast+0x449/0x710 [ 3596.140257][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.140257][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.140257][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.140257][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.140257][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.140257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.140257][ T72] [ 3596.141769][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3596.141769][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.141769][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.141769][ T72] ipv6_find_idev+0x102/0x170 [ 3596.141769][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.141769][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.141769][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.141769][ T72] netlink_unicast+0x449/0x710 [ 3596.141769][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.141769][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.141769][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.141769][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.141769][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.141769][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.141769][ T72] [ 3596.143421][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3596.143687][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3596.143687][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.143687][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.143687][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.143687][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.143687][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.143687][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.143687][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.143687][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.143687][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.143687][ T72] netlink_unicast+0x449/0x710 [ 3596.143687][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.143687][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.143687][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.143687][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.143687][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.143687][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.143687][ T72] [ 3596.145671][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3596.145671][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.145671][ T72] ipv6_find_idev+0x102/0x170 [ 3596.145671][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.145671][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.145671][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.145671][ T72] netlink_unicast+0x449/0x710 [ 3596.145671][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.145671][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.145671][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.145671][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.145671][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.145671][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.145671][ T72] [ 3596.147179][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3596.147179][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.147179][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.147179][ T72] ipv6_find_idev+0x102/0x170 [ 3596.147179][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.147179][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.147179][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.147179][ T72] netlink_unicast+0x449/0x710 [ 3596.147179][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.147179][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.147179][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.147179][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.147179][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.147179][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.147179][ T72] [ 3596.149233][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3596.149492][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3596.149492][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.149492][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.149492][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.149492][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.149492][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.149492][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.149492][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.149492][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.149492][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.149492][ T72] netlink_unicast+0x449/0x710 [ 3596.149492][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.149492][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.149492][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.149492][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.149492][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.149492][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.149492][ T72] [ 3596.151446][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3596.151446][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.151446][ T72] ipv6_find_idev+0x102/0x170 [ 3596.151446][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.151446][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.151446][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.151446][ T72] netlink_unicast+0x449/0x710 [ 3596.151446][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.151446][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.151446][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.151446][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.151446][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.151446][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.151446][ T72] [ 3596.152948][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3596.152948][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.152948][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.152948][ T72] ipv6_find_idev+0x102/0x170 [ 3596.152948][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.152948][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.152948][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.152948][ T72] netlink_unicast+0x449/0x710 [ 3596.152948][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.152948][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.152948][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.152948][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.152948][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.152948][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.152948][ T72] [ 3596.154638][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3596.154952][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3596.154952][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.154952][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.154952][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.154952][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.154952][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.154952][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.154952][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.154952][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.154952][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.154952][ T72] netlink_unicast+0x449/0x710 [ 3596.154952][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.154952][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.154952][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.154952][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.154952][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.154952][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.154952][ T72] [ 3596.156983][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3596.156983][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.156983][ T72] ipv6_find_idev+0x102/0x170 [ 3596.156983][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.156983][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.156983][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.156983][ T72] netlink_unicast+0x449/0x710 [ 3596.156983][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.156983][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.156983][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.156983][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.156983][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.156983][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.156983][ T72] [ 3596.158730][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3596.158730][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.158730][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.158730][ T72] ipv6_find_idev+0x102/0x170 [ 3596.158730][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.158730][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.158730][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.158730][ T72] netlink_unicast+0x449/0x710 [ 3596.158730][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.158730][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.158730][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.158730][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.158730][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.158730][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.158730][ T72] [ 3596.160597][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3596.160909][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3596.160909][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.160909][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.160909][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.160909][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.160909][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.160909][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.160909][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.160909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.160909][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.160909][ T72] netlink_unicast+0x449/0x710 [ 3596.160909][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.160909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.160909][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.160909][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.160909][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.160909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.160909][ T72] [ 3596.162996][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3596.162996][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.162996][ T72] ipv6_find_idev+0x102/0x170 [ 3596.162996][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.162996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.162996][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.162996][ T72] netlink_unicast+0x449/0x710 [ 3596.162996][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.162996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.162996][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.162996][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.162996][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.162996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.162996][ T72] [ 3596.164689][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3596.164689][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.164689][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.164689][ T72] ipv6_find_idev+0x102/0x170 [ 3596.164689][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.164689][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.164689][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.164689][ T72] netlink_unicast+0x449/0x710 [ 3596.164689][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.164689][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.164689][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.164689][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.164689][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.164689][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.164689][ T72] [ 3596.166615][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3596.166933][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3596.166933][ T72] netdev_get_by_index+0x5e/0x80 [ 3596.166933][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3596.166933][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3596.166933][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3596.166933][ T72] ipv6_add_addr+0x411/0x2000 [ 3596.166933][ T72] inet6_addr_add+0x30e/0xa40 [ 3596.166933][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3596.166933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.166933][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.166933][ T72] netlink_unicast+0x449/0x710 [ 3596.166933][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.166933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.166933][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.166933][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.166933][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.166933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.166933][ T72] [ 3596.169123][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3596.169123][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3596.169123][ T72] ipv6_find_idev+0x102/0x170 [ 3596.169123][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.169123][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.169123][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.169123][ T72] netlink_unicast+0x449/0x710 [ 3596.169123][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.169123][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.169123][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.169123][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.169123][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.169123][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.169123][ T72] [ 3596.170820][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3596.170820][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3596.170820][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3596.170820][ T72] ipv6_find_idev+0x102/0x170 [ 3596.170820][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3596.170820][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3596.170820][ T72] netlink_rcv_skb+0x130/0x360 [ 3596.170820][ T72] netlink_unicast+0x449/0x710 [ 3596.170820][ T72] netlink_sendmsg+0x723/0xbe0 [ 3596.170820][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3596.170820][ T72] ___sys_sendmsg+0xee/0x170 [ 3596.170820][ T72] __sys_sendmsg+0xcd/0x170 [ 3596.170820][ T72] do_syscall_64+0xc6/0x1e0 [ 3596.170820][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3596.170820][ T72] [ 3606.350919][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3606.351386][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3606.351386][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.351386][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.351386][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.351386][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.351386][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.351386][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.351386][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.351386][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.351386][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.351386][ T72] netlink_unicast+0x449/0x710 [ 3606.351386][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.351386][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.351386][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.351386][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.351386][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.351386][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.351386][ T72] [ 3606.353375][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3606.353375][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.353375][ T72] ipv6_find_idev+0x102/0x170 [ 3606.353375][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.353375][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.353375][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.353375][ T72] netlink_unicast+0x449/0x710 [ 3606.353375][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.353375][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.353375][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.353375][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.353375][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.353375][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.353375][ T72] [ 3606.354909][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3606.354909][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.354909][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.354909][ T72] ipv6_find_idev+0x102/0x170 [ 3606.354909][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.354909][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.354909][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.354909][ T72] netlink_unicast+0x449/0x710 [ 3606.354909][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.354909][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.354909][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.354909][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.354909][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.354909][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.354909][ T72] [ 3606.356611][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3606.356893][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3606.356893][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.356893][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.356893][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.356893][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.356893][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.356893][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.356893][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.356893][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.356893][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.356893][ T72] netlink_unicast+0x449/0x710 [ 3606.356893][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.356893][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.356893][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.356893][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.356893][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.356893][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.356893][ T72] [ 3606.358857][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3606.358857][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.358857][ T72] ipv6_find_idev+0x102/0x170 [ 3606.358857][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.358857][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.358857][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.358857][ T72] netlink_unicast+0x449/0x710 [ 3606.358857][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.358857][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.358857][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.358857][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.358857][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.358857][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.358857][ T72] [ 3606.360368][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3606.360368][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.360368][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.360368][ T72] ipv6_find_idev+0x102/0x170 [ 3606.360368][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.360368][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.360368][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.360368][ T72] netlink_unicast+0x449/0x710 [ 3606.360368][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.360368][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.360368][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.360368][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.360368][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.360368][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.360368][ T72] [ 3606.362027][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3606.362286][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3606.362286][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.362286][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.362286][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.362286][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.362286][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.362286][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.362286][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.362286][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.362286][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.362286][ T72] netlink_unicast+0x449/0x710 [ 3606.362286][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.362286][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.362286][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.362286][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.362286][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.362286][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.362286][ T72] [ 3606.364265][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3606.364265][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.364265][ T72] ipv6_find_idev+0x102/0x170 [ 3606.364265][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.364265][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.364265][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.364265][ T72] netlink_unicast+0x449/0x710 [ 3606.364265][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.364265][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.364265][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.364265][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.364265][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.364265][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.364265][ T72] [ 3606.365783][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3606.365783][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.365783][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.365783][ T72] ipv6_find_idev+0x102/0x170 [ 3606.365783][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.365783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.365783][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.365783][ T72] netlink_unicast+0x449/0x710 [ 3606.365783][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.365783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.365783][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.365783][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.365783][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.365783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.365783][ T72] [ 3606.367437][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3606.367716][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3606.367716][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.367716][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.367716][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.367716][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.367716][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.367716][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.367716][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.367716][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.367716][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.367716][ T72] netlink_unicast+0x449/0x710 [ 3606.367716][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.367716][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.367716][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.367716][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.367716][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.367716][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.367716][ T72] [ 3606.369684][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3606.369684][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.369684][ T72] ipv6_find_idev+0x102/0x170 [ 3606.369684][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.369684][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.369684][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.369684][ T72] netlink_unicast+0x449/0x710 [ 3606.369684][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.369684][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.369684][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.369684][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.369684][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.369684][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.369684][ T72] [ 3606.371197][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3606.371197][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.371197][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.371197][ T72] ipv6_find_idev+0x102/0x170 [ 3606.371197][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.371197][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.371197][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.371197][ T72] netlink_unicast+0x449/0x710 [ 3606.371197][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.371197][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.371197][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.371197][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.371197][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.371197][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.371197][ T72] [ 3606.373265][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3606.373525][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3606.373525][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.373525][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.373525][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.373525][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.373525][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.373525][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.373525][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.373525][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.373525][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.373525][ T72] netlink_unicast+0x449/0x710 [ 3606.373525][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.373525][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.373525][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.373525][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.373525][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.373525][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.373525][ T72] [ 3606.375493][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3606.375493][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.375493][ T72] ipv6_find_idev+0x102/0x170 [ 3606.375493][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.375493][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.375493][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.375493][ T72] netlink_unicast+0x449/0x710 [ 3606.375493][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.375493][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.375493][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.375493][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.375493][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.375493][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.375493][ T72] [ 3606.377004][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3606.377004][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.377004][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.377004][ T72] ipv6_find_idev+0x102/0x170 [ 3606.377004][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.377004][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.377004][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.377004][ T72] netlink_unicast+0x449/0x710 [ 3606.377004][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.377004][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.377004][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.377004][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.377004][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.377004][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.377004][ T72] [ 3606.378702][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3606.379012][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3606.379012][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.379012][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.379012][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.379012][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.379012][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.379012][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.379012][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.379012][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.379012][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.379012][ T72] netlink_unicast+0x449/0x710 [ 3606.379012][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.379012][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.379012][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.379012][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.379012][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.379012][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.379012][ T72] [ 3606.381039][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3606.381039][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.381039][ T72] ipv6_find_idev+0x102/0x170 [ 3606.381039][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.381039][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.381039][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.381039][ T72] netlink_unicast+0x449/0x710 [ 3606.381039][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.381039][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.381039][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.381039][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.381039][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.381039][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.381039][ T72] [ 3606.382801][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3606.382801][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.382801][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.382801][ T72] ipv6_find_idev+0x102/0x170 [ 3606.382801][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.382801][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.382801][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.382801][ T72] netlink_unicast+0x449/0x710 [ 3606.382801][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.382801][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.382801][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.382801][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.382801][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.382801][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.382801][ T72] [ 3606.384683][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3606.384996][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3606.384996][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.384996][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.384996][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.384996][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.384996][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.384996][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.384996][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.384996][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.384996][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.384996][ T72] netlink_unicast+0x449/0x710 [ 3606.384996][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.384996][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.384996][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.384996][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.384996][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.384996][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.384996][ T72] [ 3606.387147][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3606.387147][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.387147][ T72] ipv6_find_idev+0x102/0x170 [ 3606.387147][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.387147][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.387147][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.387147][ T72] netlink_unicast+0x449/0x710 [ 3606.387147][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.387147][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.387147][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.387147][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.387147][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.387147][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.387147][ T72] [ 3606.388847][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3606.388847][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.388847][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.388847][ T72] ipv6_find_idev+0x102/0x170 [ 3606.388847][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.388847][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.388847][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.388847][ T72] netlink_unicast+0x449/0x710 [ 3606.388847][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.388847][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.388847][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.388847][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.388847][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.388847][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.388847][ T72] [ 3606.390796][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3606.391061][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3606.391061][ T72] netdev_get_by_index+0x5e/0x80 [ 3606.391061][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3606.391061][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3606.391061][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3606.391061][ T72] ipv6_add_addr+0x411/0x2000 [ 3606.391061][ T72] inet6_addr_add+0x30e/0xa40 [ 3606.391061][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3606.391061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.391061][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.391061][ T72] netlink_unicast+0x449/0x710 [ 3606.391061][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.391061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.391061][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.391061][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.391061][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.391061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.391061][ T72] [ 3606.393369][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3606.393369][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3606.393369][ T72] ipv6_find_idev+0x102/0x170 [ 3606.393369][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.393369][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.393369][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.393369][ T72] netlink_unicast+0x449/0x710 [ 3606.393369][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.393369][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.393369][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.393369][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.393369][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.393369][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.393369][ T72] [ 3606.395069][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3606.395069][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3606.395069][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3606.395069][ T72] ipv6_find_idev+0x102/0x170 [ 3606.395069][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3606.395069][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3606.395069][ T72] netlink_rcv_skb+0x130/0x360 [ 3606.395069][ T72] netlink_unicast+0x449/0x710 [ 3606.395069][ T72] netlink_sendmsg+0x723/0xbe0 [ 3606.395069][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3606.395069][ T72] ___sys_sendmsg+0xee/0x170 [ 3606.395069][ T72] __sys_sendmsg+0xcd/0x170 [ 3606.395069][ T72] do_syscall_64+0xc6/0x1e0 [ 3606.395069][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3606.395069][ T72] [ 3616.646869][ T72] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 3616.647362][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3616.647362][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.647362][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.647362][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.647362][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.647362][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.647362][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.647362][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.647362][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.647362][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.647362][ T72] netlink_unicast+0x449/0x710 [ 3616.647362][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.647362][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.647362][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.647362][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.647362][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.647362][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.647362][ T72] [ 3616.649502][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3616.649502][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.649502][ T72] ipv6_find_idev+0x102/0x170 [ 3616.649502][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.649502][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.649502][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.649502][ T72] netlink_unicast+0x449/0x710 [ 3616.649502][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.649502][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.649502][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.649502][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.649502][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.649502][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.649502][ T72] [ 3616.651036][ T72] ref_tracker: ns1eth4@ffff8880064645c0 has 1/3 users at [ 3616.651036][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.651036][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.651036][ T72] ipv6_find_idev+0x102/0x170 [ 3616.651036][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.651036][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.651036][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.651036][ T72] netlink_unicast+0x449/0x710 [ 3616.651036][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.651036][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.651036][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.651036][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.651036][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.651036][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.651036][ T72] [ 3616.652751][ T72] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 3616.653037][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3616.653037][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.653037][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.653037][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.653037][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.653037][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.653037][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.653037][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.653037][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.653037][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.653037][ T72] netlink_unicast+0x449/0x710 [ 3616.653037][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.653037][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.653037][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.653037][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.653037][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.653037][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.653037][ T72] [ 3616.655029][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3616.655029][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.655029][ T72] ipv6_find_idev+0x102/0x170 [ 3616.655029][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.655029][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.655029][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.655029][ T72] netlink_unicast+0x449/0x710 [ 3616.655029][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.655029][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.655029][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.655029][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.655029][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.655029][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.655029][ T72] [ 3616.656564][ T72] ref_tracker: ns2eth4@ffff8880064415c0 has 1/3 users at [ 3616.656564][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.656564][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.656564][ T72] ipv6_find_idev+0x102/0x170 [ 3616.656564][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.656564][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.656564][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.656564][ T72] netlink_unicast+0x449/0x710 [ 3616.656564][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.656564][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.656564][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.656564][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.656564][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.656564][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.656564][ T72] [ 3616.658248][ T72] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 3616.658513][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3616.658513][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.658513][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.658513][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.658513][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.658513][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.658513][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.658513][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.658513][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.658513][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.658513][ T72] netlink_unicast+0x449/0x710 [ 3616.658513][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.658513][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.658513][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.658513][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.658513][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.658513][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.658513][ T72] [ 3616.660501][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3616.660501][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.660501][ T72] ipv6_find_idev+0x102/0x170 [ 3616.660501][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.660501][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.660501][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.660501][ T72] netlink_unicast+0x449/0x710 [ 3616.660501][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.660501][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.660501][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.660501][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.660501][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.660501][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.660501][ T72] [ 3616.662032][ T72] ref_tracker: ns1eth3@ffff8880074b95c0 has 1/3 users at [ 3616.662032][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.662032][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.662032][ T72] ipv6_find_idev+0x102/0x170 [ 3616.662032][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.662032][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.662032][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.662032][ T72] netlink_unicast+0x449/0x710 [ 3616.662032][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.662032][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.662032][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.662032][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.662032][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.662032][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.662032][ T72] [ 3616.663704][ T72] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 3616.664425][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3616.664425][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.664425][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.664425][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.664425][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.664425][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.664425][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.664425][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.664425][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.664425][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.664425][ T72] netlink_unicast+0x449/0x710 [ 3616.664425][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.664425][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.664425][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.664425][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.664425][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.664425][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.664425][ T72] [ 3616.666411][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3616.666411][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.666411][ T72] ipv6_find_idev+0x102/0x170 [ 3616.666411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.666411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.666411][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.666411][ T72] netlink_unicast+0x449/0x710 [ 3616.666411][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.666411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.666411][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.666411][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.666411][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.666411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.666411][ T72] [ 3616.667933][ T72] ref_tracker: ns2eth3@ffff8880056795c0 has 1/3 users at [ 3616.667933][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.667933][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.667933][ T72] ipv6_find_idev+0x102/0x170 [ 3616.667933][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.667933][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.667933][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.667933][ T72] netlink_unicast+0x449/0x710 [ 3616.667933][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.667933][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.667933][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.667933][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.667933][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.667933][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.667933][ T72] [ 3616.669649][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 3616.669966][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3616.669966][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.669966][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.669966][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.669966][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.669966][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.669966][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.669966][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.669966][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.669966][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.669966][ T72] netlink_unicast+0x449/0x710 [ 3616.669966][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.669966][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.669966][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.669966][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.669966][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.669966][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.669966][ T72] [ 3616.671958][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3616.671958][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.671958][ T72] ipv6_find_idev+0x102/0x170 [ 3616.671958][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.671958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.671958][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.671958][ T72] netlink_unicast+0x449/0x710 [ 3616.671958][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.671958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.671958][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.671958][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.671958][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.671958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.671958][ T72] [ 3616.673482][ T72] ref_tracker: ns1eth2@ffff8880067e45c0 has 1/3 users at [ 3616.673482][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.673482][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.673482][ T72] ipv6_find_idev+0x102/0x170 [ 3616.673482][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.673482][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.673482][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.673482][ T72] netlink_unicast+0x449/0x710 [ 3616.673482][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.673482][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.673482][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.673482][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.673482][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.673482][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.673482][ T72] [ 3616.675237][ T72] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 3616.675563][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3616.675563][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.675563][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.675563][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.675563][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.675563][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.675563][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.675563][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.675563][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.675563][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.675563][ T72] netlink_unicast+0x449/0x710 [ 3616.675563][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.675563][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.675563][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.675563][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.675563][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.675563][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.675563][ T72] [ 3616.677612][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3616.677612][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.677612][ T72] ipv6_find_idev+0x102/0x170 [ 3616.677612][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.677612][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.677612][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.677612][ T72] netlink_unicast+0x449/0x710 [ 3616.677612][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.677612][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.677612][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.677612][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.677612][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.677612][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.677612][ T72] [ 3616.679377][ T72] ref_tracker: ns2eth2@ffff888005b795c0 has 1/3 users at [ 3616.679377][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.679377][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.679377][ T72] ipv6_find_idev+0x102/0x170 [ 3616.679377][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.679377][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.679377][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.679377][ T72] netlink_unicast+0x449/0x710 [ 3616.679377][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.679377][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.679377][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.679377][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.679377][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.679377][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.679377][ T72] [ 3616.681280][ T72] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 3616.681584][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3616.681584][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.681584][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.681584][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.681584][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.681584][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.681584][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.681584][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.681584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.681584][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.681584][ T72] netlink_unicast+0x449/0x710 [ 3616.681584][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.681584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.681584][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.681584][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.681584][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.681584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.681584][ T72] [ 3616.683750][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3616.683750][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.683750][ T72] ipv6_find_idev+0x102/0x170 [ 3616.683750][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.683750][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.683750][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.683750][ T72] netlink_unicast+0x449/0x710 [ 3616.683750][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.683750][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.683750][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.683750][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.683750][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.683750][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.683750][ T72] [ 3616.685470][ T72] ref_tracker: ns1eth1@ffff888002dc95c0 has 1/3 users at [ 3616.685470][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.685470][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.685470][ T72] ipv6_find_idev+0x102/0x170 [ 3616.685470][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.685470][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.685470][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.685470][ T72] netlink_unicast+0x449/0x710 [ 3616.685470][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.685470][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.685470][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.685470][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.685470][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.685470][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.685470][ T72] [ 3616.687377][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 3616.687688][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3616.687688][ T72] netdev_get_by_index+0x5e/0x80 [ 3616.687688][ T72] fib6_nh_init+0x3d8/0x15b0 [ 3616.687688][ T72] ip6_route_info_create+0xf18/0x17d0 [ 3616.687688][ T72] addrconf_f6i_alloc+0x244/0x410 [ 3616.687688][ T72] ipv6_add_addr+0x411/0x2000 [ 3616.687688][ T72] inet6_addr_add+0x30e/0xa40 [ 3616.687688][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 3616.687688][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.687688][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.687688][ T72] netlink_unicast+0x449/0x710 [ 3616.687688][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.687688][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.687688][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.687688][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.687688][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.687688][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.687688][ T72] [ 3616.689850][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3616.689850][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 3616.689850][ T72] ipv6_find_idev+0x102/0x170 [ 3616.689850][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.689850][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.689850][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.689850][ T72] netlink_unicast+0x449/0x710 [ 3616.689850][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.689850][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.689850][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.689850][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.689850][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.689850][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.689850][ T72] [ 3616.691615][ T72] ref_tracker: ns2eth1@ffff8880065345c0 has 1/3 users at [ 3616.691615][ T72] neigh_parms_alloc+0x1e5/0x510 [ 3616.691615][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 3616.691615][ T72] ipv6_find_idev+0x102/0x170 [ 3616.691615][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 3616.691615][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 3616.691615][ T72] netlink_rcv_skb+0x130/0x360 [ 3616.691615][ T72] netlink_unicast+0x449/0x710 [ 3616.691615][ T72] netlink_sendmsg+0x723/0xbe0 [ 3616.691615][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 3616.691615][ T72] ___sys_sendmsg+0xee/0x170 [ 3616.691615][ T72] __sys_sendmsg+0xcd/0x170 [ 3616.691615][ T72] do_syscall_64+0xc6/0x1e0 [ 3616.691615][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 3616.691615][ T72]