[ 250.796619][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 250.797019][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 250.797019][ T72] netdev_get_by_index+0x5e/0x80 [ 250.797019][ T72] fib6_nh_init+0x3d8/0x15b0 [ 250.797019][ T72] ip6_route_info_create+0xf18/0x17d0 [ 250.797019][ T72] addrconf_f6i_alloc+0x244/0x410 [ 250.797019][ T72] ipv6_add_addr+0x411/0x2000 [ 250.797019][ T72] inet6_addr_add+0x30e/0xa40 [ 250.797019][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 250.797019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 250.797019][ T72] netlink_rcv_skb+0x130/0x360 [ 250.797019][ T72] netlink_unicast+0x449/0x710 [ 250.797019][ T72] netlink_sendmsg+0x723/0xbe0 [ 250.797019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 250.797019][ T72] ___sys_sendmsg+0xee/0x170 [ 250.797019][ T72] __sys_sendmsg+0xcd/0x170 [ 250.797019][ T72] do_syscall_64+0xc6/0x1e0 [ 250.797019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.797019][ T72] [ 250.799480][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 250.799480][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 250.799480][ T72] ipv6_find_idev+0x102/0x170 [ 250.799480][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 250.799480][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 250.799480][ T72] netlink_rcv_skb+0x130/0x360 [ 250.799480][ T72] netlink_unicast+0x449/0x710 [ 250.799480][ T72] netlink_sendmsg+0x723/0xbe0 [ 250.799480][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 250.799480][ T72] ___sys_sendmsg+0xee/0x170 [ 250.799480][ T72] __sys_sendmsg+0xcd/0x170 [ 250.799480][ T72] do_syscall_64+0xc6/0x1e0 [ 250.799480][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.799480][ T72] [ 250.801291][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 250.801291][ T72] neigh_parms_alloc+0x1e5/0x510 [ 250.801291][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 250.801291][ T72] ipv6_find_idev+0x102/0x170 [ 250.801291][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 250.801291][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 250.801291][ T72] netlink_rcv_skb+0x130/0x360 [ 250.801291][ T72] netlink_unicast+0x449/0x710 [ 250.801291][ T72] netlink_sendmsg+0x723/0xbe0 [ 250.801291][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 250.801291][ T72] ___sys_sendmsg+0xee/0x170 [ 250.801291][ T72] __sys_sendmsg+0xcd/0x170 [ 250.801291][ T72] do_syscall_64+0xc6/0x1e0 [ 250.801291][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.801291][ T72] [ 250.803410][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 250.803744][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 250.803744][ T72] netdev_get_by_index+0x5e/0x80 [ 250.803744][ T72] fib6_nh_init+0x3d8/0x15b0 [ 250.803744][ T72] ip6_route_info_create+0xf18/0x17d0 [ 250.803744][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 250.803744][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 250.803744][ T72] addrconf_join_anycast+0x1c0/0x220 [ 250.803744][ T72] dev_forward_change+0x2a6/0x7b0 [ 250.803744][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 250.803744][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 250.803744][ T72] proc_sys_call_handler+0x403/0x5e0 [ 250.803744][ T72] vfs_write+0x9e5/0x10a0 [ 250.803744][ T72] ksys_write+0xf5/0x1e0 [ 250.803744][ T72] do_syscall_64+0xc6/0x1e0 [ 250.803744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.803744][ T72] [ 250.805916][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 250.805916][ T72] netdev_get_by_index+0x5e/0x80 [ 250.805916][ T72] fib6_nh_init+0x3d8/0x15b0 [ 250.805916][ T72] ip6_route_info_create+0xf18/0x17d0 [ 250.805916][ T72] addrconf_f6i_alloc+0x244/0x410 [ 250.805916][ T72] ipv6_add_addr+0x411/0x2000 [ 250.805916][ T72] inet6_addr_add+0x30e/0xa40 [ 250.805916][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 250.805916][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 250.805916][ T72] netlink_rcv_skb+0x130/0x360 [ 250.805916][ T72] netlink_unicast+0x449/0x710 [ 250.805916][ T72] netlink_sendmsg+0x723/0xbe0 [ 250.805916][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 250.805916][ T72] ___sys_sendmsg+0xee/0x170 [ 250.805916][ T72] __sys_sendmsg+0xcd/0x170 [ 250.805916][ T72] do_syscall_64+0xc6/0x1e0 [ 250.805916][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.805916][ T72] [ 250.808261][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 250.808261][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 250.808261][ T72] ipv6_find_idev+0x102/0x170 [ 250.808261][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 250.808261][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 250.808261][ T72] netlink_rcv_skb+0x130/0x360 [ 250.808261][ T72] netlink_unicast+0x449/0x710 [ 250.808261][ T72] netlink_sendmsg+0x723/0xbe0 [ 250.808261][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 250.808261][ T72] ___sys_sendmsg+0xee/0x170 [ 250.808261][ T72] __sys_sendmsg+0xcd/0x170 [ 250.808261][ T72] do_syscall_64+0xc6/0x1e0 [ 250.808261][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.808261][ T72] [ 250.810051][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 250.810051][ T72] neigh_parms_alloc+0x1e5/0x510 [ 250.810051][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 250.810051][ T72] ipv6_find_idev+0x102/0x170 [ 250.810051][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 250.810051][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 250.810051][ T72] netlink_rcv_skb+0x130/0x360 [ 250.810051][ T72] netlink_unicast+0x449/0x710 [ 250.810051][ T72] netlink_sendmsg+0x723/0xbe0 [ 250.810051][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 250.810051][ T72] ___sys_sendmsg+0xee/0x170 [ 250.810051][ T72] __sys_sendmsg+0xcd/0x170 [ 250.810051][ T72] do_syscall_64+0xc6/0x1e0 [ 250.810051][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.810051][ T72] [ 250.811952][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 250.812226][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 250.812226][ T72] dst_init+0x84/0x4a0 [ 250.812226][ T72] dst_alloc+0x97/0x150 [ 250.812226][ T72] ip6_dst_alloc+0x23/0x90 [ 250.812226][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 250.812226][ T72] ip6_pol_route+0x56f/0x840 [ 250.812226][ T72] fib6_rule_lookup+0x227/0x600 [ 250.812226][ T72] ip6_route_output_flags+0x251/0x460 [ 250.812226][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 250.812226][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 250.812226][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 250.812226][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 250.812226][ T72] ip6_datagram_connect+0x2c/0x50 [ 250.812226][ T72] __sys_connect+0x217/0x2a0 [ 250.812226][ T72] __x64_sys_connect+0x72/0xb0 [ 250.812226][ T72] do_syscall_64+0xc6/0x1e0 [ 250.812226][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 250.812226][ T72] [ 258.157113][ T1128] netem: version 1.3 [ 260.948616][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 260.949065][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 260.949065][ T72] netdev_get_by_index+0x5e/0x80 [ 260.949065][ T72] fib6_nh_init+0x3d8/0x15b0 [ 260.949065][ T72] ip6_route_info_create+0xf18/0x17d0 [ 260.949065][ T72] addrconf_f6i_alloc+0x244/0x410 [ 260.949065][ T72] ipv6_add_addr+0x411/0x2000 [ 260.949065][ T72] inet6_addr_add+0x30e/0xa40 [ 260.949065][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 260.949065][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 260.949065][ T72] netlink_rcv_skb+0x130/0x360 [ 260.949065][ T72] netlink_unicast+0x449/0x710 [ 260.949065][ T72] netlink_sendmsg+0x723/0xbe0 [ 260.949065][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 260.949065][ T72] ___sys_sendmsg+0xee/0x170 [ 260.949065][ T72] __sys_sendmsg+0xcd/0x170 [ 260.949065][ T72] do_syscall_64+0xc6/0x1e0 [ 260.949065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.949065][ T72] [ 260.951094][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 260.951094][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 260.951094][ T72] ipv6_find_idev+0x102/0x170 [ 260.951094][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 260.951094][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 260.951094][ T72] netlink_rcv_skb+0x130/0x360 [ 260.951094][ T72] netlink_unicast+0x449/0x710 [ 260.951094][ T72] netlink_sendmsg+0x723/0xbe0 [ 260.951094][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 260.951094][ T72] ___sys_sendmsg+0xee/0x170 [ 260.951094][ T72] __sys_sendmsg+0xcd/0x170 [ 260.951094][ T72] do_syscall_64+0xc6/0x1e0 [ 260.951094][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.951094][ T72] [ 260.952767][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 260.952767][ T72] neigh_parms_alloc+0x1e5/0x510 [ 260.952767][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 260.952767][ T72] ipv6_find_idev+0x102/0x170 [ 260.952767][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 260.952767][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 260.952767][ T72] netlink_rcv_skb+0x130/0x360 [ 260.952767][ T72] netlink_unicast+0x449/0x710 [ 260.952767][ T72] netlink_sendmsg+0x723/0xbe0 [ 260.952767][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 260.952767][ T72] ___sys_sendmsg+0xee/0x170 [ 260.952767][ T72] __sys_sendmsg+0xcd/0x170 [ 260.952767][ T72] do_syscall_64+0xc6/0x1e0 [ 260.952767][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.952767][ T72] [ 260.954569][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 260.955019][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 260.955019][ T72] netdev_get_by_index+0x5e/0x80 [ 260.955019][ T72] fib6_nh_init+0x3d8/0x15b0 [ 260.955019][ T72] ip6_route_info_create+0xf18/0x17d0 [ 260.955019][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 260.955019][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 260.955019][ T72] addrconf_join_anycast+0x1c0/0x220 [ 260.955019][ T72] dev_forward_change+0x2a6/0x7b0 [ 260.955019][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 260.955019][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 260.955019][ T72] proc_sys_call_handler+0x403/0x5e0 [ 260.955019][ T72] vfs_write+0x9e5/0x10a0 [ 260.955019][ T72] ksys_write+0xf5/0x1e0 [ 260.955019][ T72] do_syscall_64+0xc6/0x1e0 [ 260.955019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.955019][ T72] [ 260.956848][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 260.956848][ T72] netdev_get_by_index+0x5e/0x80 [ 260.956848][ T72] fib6_nh_init+0x3d8/0x15b0 [ 260.956848][ T72] ip6_route_info_create+0xf18/0x17d0 [ 260.956848][ T72] addrconf_f6i_alloc+0x244/0x410 [ 260.956848][ T72] ipv6_add_addr+0x411/0x2000 [ 260.956848][ T72] inet6_addr_add+0x30e/0xa40 [ 260.956848][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 260.956848][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 260.956848][ T72] netlink_rcv_skb+0x130/0x360 [ 260.956848][ T72] netlink_unicast+0x449/0x710 [ 260.956848][ T72] netlink_sendmsg+0x723/0xbe0 [ 260.956848][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 260.956848][ T72] ___sys_sendmsg+0xee/0x170 [ 260.956848][ T72] __sys_sendmsg+0xcd/0x170 [ 260.956848][ T72] do_syscall_64+0xc6/0x1e0 [ 260.956848][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.956848][ T72] [ 260.958812][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 260.958812][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 260.958812][ T72] ipv6_find_idev+0x102/0x170 [ 260.958812][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 260.958812][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 260.958812][ T72] netlink_rcv_skb+0x130/0x360 [ 260.958812][ T72] netlink_unicast+0x449/0x710 [ 260.958812][ T72] netlink_sendmsg+0x723/0xbe0 [ 260.958812][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 260.958812][ T72] ___sys_sendmsg+0xee/0x170 [ 260.958812][ T72] __sys_sendmsg+0xcd/0x170 [ 260.958812][ T72] do_syscall_64+0xc6/0x1e0 [ 260.958812][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.958812][ T72] [ 260.960355][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 260.960355][ T72] neigh_parms_alloc+0x1e5/0x510 [ 260.960355][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 260.960355][ T72] ipv6_find_idev+0x102/0x170 [ 260.960355][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 260.960355][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 260.960355][ T72] netlink_rcv_skb+0x130/0x360 [ 260.960355][ T72] netlink_unicast+0x449/0x710 [ 260.960355][ T72] netlink_sendmsg+0x723/0xbe0 [ 260.960355][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 260.960355][ T72] ___sys_sendmsg+0xee/0x170 [ 260.960355][ T72] __sys_sendmsg+0xcd/0x170 [ 260.960355][ T72] do_syscall_64+0xc6/0x1e0 [ 260.960355][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.960355][ T72] [ 260.962013][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 260.962257][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 260.962257][ T72] dst_init+0x84/0x4a0 [ 260.962257][ T72] dst_alloc+0x97/0x150 [ 260.962257][ T72] ip6_dst_alloc+0x23/0x90 [ 260.962257][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 260.962257][ T72] ip6_pol_route+0x56f/0x840 [ 260.962257][ T72] fib6_rule_lookup+0x227/0x600 [ 260.962257][ T72] ip6_route_output_flags+0x251/0x460 [ 260.962257][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 260.962257][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 260.962257][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 260.962257][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 260.962257][ T72] ip6_datagram_connect+0x2c/0x50 [ 260.962257][ T72] __sys_connect+0x217/0x2a0 [ 260.962257][ T72] __x64_sys_connect+0x72/0xb0 [ 260.962257][ T72] do_syscall_64+0xc6/0x1e0 [ 260.962257][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 260.962257][ T72] [ 271.084699][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 271.085137][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 271.085137][ T72] netdev_get_by_index+0x5e/0x80 [ 271.085137][ T72] fib6_nh_init+0x3d8/0x15b0 [ 271.085137][ T72] ip6_route_info_create+0xf18/0x17d0 [ 271.085137][ T72] addrconf_f6i_alloc+0x244/0x410 [ 271.085137][ T72] ipv6_add_addr+0x411/0x2000 [ 271.085137][ T72] inet6_addr_add+0x30e/0xa40 [ 271.085137][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 271.085137][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 271.085137][ T72] netlink_rcv_skb+0x130/0x360 [ 271.085137][ T72] netlink_unicast+0x449/0x710 [ 271.085137][ T72] netlink_sendmsg+0x723/0xbe0 [ 271.085137][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 271.085137][ T72] ___sys_sendmsg+0xee/0x170 [ 271.085137][ T72] __sys_sendmsg+0xcd/0x170 [ 271.085137][ T72] do_syscall_64+0xc6/0x1e0 [ 271.085137][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.085137][ T72] [ 271.087160][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 271.087160][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 271.087160][ T72] ipv6_find_idev+0x102/0x170 [ 271.087160][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 271.087160][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 271.087160][ T72] netlink_rcv_skb+0x130/0x360 [ 271.087160][ T72] netlink_unicast+0x449/0x710 [ 271.087160][ T72] netlink_sendmsg+0x723/0xbe0 [ 271.087160][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 271.087160][ T72] ___sys_sendmsg+0xee/0x170 [ 271.087160][ T72] __sys_sendmsg+0xcd/0x170 [ 271.087160][ T72] do_syscall_64+0xc6/0x1e0 [ 271.087160][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.087160][ T72] [ 271.088719][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 271.088719][ T72] neigh_parms_alloc+0x1e5/0x510 [ 271.088719][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 271.088719][ T72] ipv6_find_idev+0x102/0x170 [ 271.088719][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 271.088719][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 271.088719][ T72] netlink_rcv_skb+0x130/0x360 [ 271.088719][ T72] netlink_unicast+0x449/0x710 [ 271.088719][ T72] netlink_sendmsg+0x723/0xbe0 [ 271.088719][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 271.088719][ T72] ___sys_sendmsg+0xee/0x170 [ 271.088719][ T72] __sys_sendmsg+0xcd/0x170 [ 271.088719][ T72] do_syscall_64+0xc6/0x1e0 [ 271.088719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.088719][ T72] [ 271.090434][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 271.090730][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 271.090730][ T72] netdev_get_by_index+0x5e/0x80 [ 271.090730][ T72] fib6_nh_init+0x3d8/0x15b0 [ 271.090730][ T72] ip6_route_info_create+0xf18/0x17d0 [ 271.090730][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 271.090730][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 271.090730][ T72] addrconf_join_anycast+0x1c0/0x220 [ 271.090730][ T72] dev_forward_change+0x2a6/0x7b0 [ 271.090730][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 271.090730][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 271.090730][ T72] proc_sys_call_handler+0x403/0x5e0 [ 271.090730][ T72] vfs_write+0x9e5/0x10a0 [ 271.090730][ T72] ksys_write+0xf5/0x1e0 [ 271.090730][ T72] do_syscall_64+0xc6/0x1e0 [ 271.090730][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.090730][ T72] [ 271.092565][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 271.092565][ T72] netdev_get_by_index+0x5e/0x80 [ 271.092565][ T72] fib6_nh_init+0x3d8/0x15b0 [ 271.092565][ T72] ip6_route_info_create+0xf18/0x17d0 [ 271.092565][ T72] addrconf_f6i_alloc+0x244/0x410 [ 271.092565][ T72] ipv6_add_addr+0x411/0x2000 [ 271.092565][ T72] inet6_addr_add+0x30e/0xa40 [ 271.092565][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 271.092565][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 271.092565][ T72] netlink_rcv_skb+0x130/0x360 [ 271.092565][ T72] netlink_unicast+0x449/0x710 [ 271.092565][ T72] netlink_sendmsg+0x723/0xbe0 [ 271.092565][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 271.092565][ T72] ___sys_sendmsg+0xee/0x170 [ 271.092565][ T72] __sys_sendmsg+0xcd/0x170 [ 271.092565][ T72] do_syscall_64+0xc6/0x1e0 [ 271.092565][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.092565][ T72] [ 271.094543][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 271.094543][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 271.094543][ T72] ipv6_find_idev+0x102/0x170 [ 271.094543][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 271.094543][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 271.094543][ T72] netlink_rcv_skb+0x130/0x360 [ 271.094543][ T72] netlink_unicast+0x449/0x710 [ 271.094543][ T72] netlink_sendmsg+0x723/0xbe0 [ 271.094543][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 271.094543][ T72] ___sys_sendmsg+0xee/0x170 [ 271.094543][ T72] __sys_sendmsg+0xcd/0x170 [ 271.094543][ T72] do_syscall_64+0xc6/0x1e0 [ 271.094543][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.094543][ T72] [ 271.096068][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 271.096068][ T72] neigh_parms_alloc+0x1e5/0x510 [ 271.096068][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 271.096068][ T72] ipv6_find_idev+0x102/0x170 [ 271.096068][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 271.096068][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 271.096068][ T72] netlink_rcv_skb+0x130/0x360 [ 271.096068][ T72] netlink_unicast+0x449/0x710 [ 271.096068][ T72] netlink_sendmsg+0x723/0xbe0 [ 271.096068][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 271.096068][ T72] ___sys_sendmsg+0xee/0x170 [ 271.096068][ T72] __sys_sendmsg+0xcd/0x170 [ 271.096068][ T72] do_syscall_64+0xc6/0x1e0 [ 271.096068][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.096068][ T72] [ 271.097736][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 271.097982][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 271.097982][ T72] dst_init+0x84/0x4a0 [ 271.097982][ T72] dst_alloc+0x97/0x150 [ 271.097982][ T72] ip6_dst_alloc+0x23/0x90 [ 271.097982][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 271.097982][ T72] ip6_pol_route+0x56f/0x840 [ 271.097982][ T72] fib6_rule_lookup+0x227/0x600 [ 271.097982][ T72] ip6_route_output_flags+0x251/0x460 [ 271.097982][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 271.097982][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 271.097982][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 271.097982][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 271.097982][ T72] ip6_datagram_connect+0x2c/0x50 [ 271.097982][ T72] __sys_connect+0x217/0x2a0 [ 271.097982][ T72] __x64_sys_connect+0x72/0xb0 [ 271.097982][ T72] do_syscall_64+0xc6/0x1e0 [ 271.097982][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 271.097982][ T72] [ 281.212696][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 281.213143][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 281.213143][ T72] netdev_get_by_index+0x5e/0x80 [ 281.213143][ T72] fib6_nh_init+0x3d8/0x15b0 [ 281.213143][ T72] ip6_route_info_create+0xf18/0x17d0 [ 281.213143][ T72] addrconf_f6i_alloc+0x244/0x410 [ 281.213143][ T72] ipv6_add_addr+0x411/0x2000 [ 281.213143][ T72] inet6_addr_add+0x30e/0xa40 [ 281.213143][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 281.213143][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 281.213143][ T72] netlink_rcv_skb+0x130/0x360 [ 281.213143][ T72] netlink_unicast+0x449/0x710 [ 281.213143][ T72] netlink_sendmsg+0x723/0xbe0 [ 281.213143][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 281.213143][ T72] ___sys_sendmsg+0xee/0x170 [ 281.213143][ T72] __sys_sendmsg+0xcd/0x170 [ 281.213143][ T72] do_syscall_64+0xc6/0x1e0 [ 281.213143][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.213143][ T72] [ 281.215185][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 281.215185][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 281.215185][ T72] ipv6_find_idev+0x102/0x170 [ 281.215185][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 281.215185][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 281.215185][ T72] netlink_rcv_skb+0x130/0x360 [ 281.215185][ T72] netlink_unicast+0x449/0x710 [ 281.215185][ T72] netlink_sendmsg+0x723/0xbe0 [ 281.215185][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 281.215185][ T72] ___sys_sendmsg+0xee/0x170 [ 281.215185][ T72] __sys_sendmsg+0xcd/0x170 [ 281.215185][ T72] do_syscall_64+0xc6/0x1e0 [ 281.215185][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.215185][ T72] [ 281.216759][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 281.216759][ T72] neigh_parms_alloc+0x1e5/0x510 [ 281.216759][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 281.216759][ T72] ipv6_find_idev+0x102/0x170 [ 281.216759][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 281.216759][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 281.216759][ T72] netlink_rcv_skb+0x130/0x360 [ 281.216759][ T72] netlink_unicast+0x449/0x710 [ 281.216759][ T72] netlink_sendmsg+0x723/0xbe0 [ 281.216759][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 281.216759][ T72] ___sys_sendmsg+0xee/0x170 [ 281.216759][ T72] __sys_sendmsg+0xcd/0x170 [ 281.216759][ T72] do_syscall_64+0xc6/0x1e0 [ 281.216759][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.216759][ T72] [ 281.218534][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 281.218832][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 281.218832][ T72] netdev_get_by_index+0x5e/0x80 [ 281.218832][ T72] fib6_nh_init+0x3d8/0x15b0 [ 281.218832][ T72] ip6_route_info_create+0xf18/0x17d0 [ 281.218832][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 281.218832][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 281.218832][ T72] addrconf_join_anycast+0x1c0/0x220 [ 281.218832][ T72] dev_forward_change+0x2a6/0x7b0 [ 281.218832][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 281.218832][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 281.218832][ T72] proc_sys_call_handler+0x403/0x5e0 [ 281.218832][ T72] vfs_write+0x9e5/0x10a0 [ 281.218832][ T72] ksys_write+0xf5/0x1e0 [ 281.218832][ T72] do_syscall_64+0xc6/0x1e0 [ 281.218832][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.218832][ T72] [ 281.220691][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 281.220691][ T72] netdev_get_by_index+0x5e/0x80 [ 281.220691][ T72] fib6_nh_init+0x3d8/0x15b0 [ 281.220691][ T72] ip6_route_info_create+0xf18/0x17d0 [ 281.220691][ T72] addrconf_f6i_alloc+0x244/0x410 [ 281.220691][ T72] ipv6_add_addr+0x411/0x2000 [ 281.220691][ T72] inet6_addr_add+0x30e/0xa40 [ 281.220691][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 281.220691][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 281.220691][ T72] netlink_rcv_skb+0x130/0x360 [ 281.220691][ T72] netlink_unicast+0x449/0x710 [ 281.220691][ T72] netlink_sendmsg+0x723/0xbe0 [ 281.220691][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 281.220691][ T72] ___sys_sendmsg+0xee/0x170 [ 281.220691][ T72] __sys_sendmsg+0xcd/0x170 [ 281.220691][ T72] do_syscall_64+0xc6/0x1e0 [ 281.220691][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.220691][ T72] [ 281.222690][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 281.222690][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 281.222690][ T72] ipv6_find_idev+0x102/0x170 [ 281.222690][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 281.222690][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 281.222690][ T72] netlink_rcv_skb+0x130/0x360 [ 281.222690][ T72] netlink_unicast+0x449/0x710 [ 281.222690][ T72] netlink_sendmsg+0x723/0xbe0 [ 281.222690][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 281.222690][ T72] ___sys_sendmsg+0xee/0x170 [ 281.222690][ T72] __sys_sendmsg+0xcd/0x170 [ 281.222690][ T72] do_syscall_64+0xc6/0x1e0 [ 281.222690][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.222690][ T72] [ 281.224214][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 281.224214][ T72] neigh_parms_alloc+0x1e5/0x510 [ 281.224214][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 281.224214][ T72] ipv6_find_idev+0x102/0x170 [ 281.224214][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 281.224214][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 281.224214][ T72] netlink_rcv_skb+0x130/0x360 [ 281.224214][ T72] netlink_unicast+0x449/0x710 [ 281.224214][ T72] netlink_sendmsg+0x723/0xbe0 [ 281.224214][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 281.224214][ T72] ___sys_sendmsg+0xee/0x170 [ 281.224214][ T72] __sys_sendmsg+0xcd/0x170 [ 281.224214][ T72] do_syscall_64+0xc6/0x1e0 [ 281.224214][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.224214][ T72] [ 281.225905][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 281.226146][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 281.226146][ T72] dst_init+0x84/0x4a0 [ 281.226146][ T72] dst_alloc+0x97/0x150 [ 281.226146][ T72] ip6_dst_alloc+0x23/0x90 [ 281.226146][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 281.226146][ T72] ip6_pol_route+0x56f/0x840 [ 281.226146][ T72] fib6_rule_lookup+0x227/0x600 [ 281.226146][ T72] ip6_route_output_flags+0x251/0x460 [ 281.226146][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 281.226146][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 281.226146][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 281.226146][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 281.226146][ T72] ip6_datagram_connect+0x2c/0x50 [ 281.226146][ T72] __sys_connect+0x217/0x2a0 [ 281.226146][ T72] __x64_sys_connect+0x72/0xb0 [ 281.226146][ T72] do_syscall_64+0xc6/0x1e0 [ 281.226146][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 281.226146][ T72] [ 291.317937][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 291.318358][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 291.318358][ T72] netdev_get_by_index+0x5e/0x80 [ 291.318358][ T72] fib6_nh_init+0x3d8/0x15b0 [ 291.318358][ T72] ip6_route_info_create+0xf18/0x17d0 [ 291.318358][ T72] addrconf_f6i_alloc+0x244/0x410 [ 291.318358][ T72] ipv6_add_addr+0x411/0x2000 [ 291.318358][ T72] inet6_addr_add+0x30e/0xa40 [ 291.318358][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 291.318358][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 291.318358][ T72] netlink_rcv_skb+0x130/0x360 [ 291.318358][ T72] netlink_unicast+0x449/0x710 [ 291.318358][ T72] netlink_sendmsg+0x723/0xbe0 [ 291.318358][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 291.318358][ T72] ___sys_sendmsg+0xee/0x170 [ 291.318358][ T72] __sys_sendmsg+0xcd/0x170 [ 291.318358][ T72] do_syscall_64+0xc6/0x1e0 [ 291.318358][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.318358][ T72] [ 291.320395][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 291.320395][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 291.320395][ T72] ipv6_find_idev+0x102/0x170 [ 291.320395][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 291.320395][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 291.320395][ T72] netlink_rcv_skb+0x130/0x360 [ 291.320395][ T72] netlink_unicast+0x449/0x710 [ 291.320395][ T72] netlink_sendmsg+0x723/0xbe0 [ 291.320395][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 291.320395][ T72] ___sys_sendmsg+0xee/0x170 [ 291.320395][ T72] __sys_sendmsg+0xcd/0x170 [ 291.320395][ T72] do_syscall_64+0xc6/0x1e0 [ 291.320395][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.320395][ T72] [ 291.321968][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 291.321968][ T72] neigh_parms_alloc+0x1e5/0x510 [ 291.321968][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 291.321968][ T72] ipv6_find_idev+0x102/0x170 [ 291.321968][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 291.321968][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 291.321968][ T72] netlink_rcv_skb+0x130/0x360 [ 291.321968][ T72] netlink_unicast+0x449/0x710 [ 291.321968][ T72] netlink_sendmsg+0x723/0xbe0 [ 291.321968][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 291.321968][ T72] ___sys_sendmsg+0xee/0x170 [ 291.321968][ T72] __sys_sendmsg+0xcd/0x170 [ 291.321968][ T72] do_syscall_64+0xc6/0x1e0 [ 291.321968][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.321968][ T72] [ 291.323894][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 291.324334][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 291.324334][ T72] netdev_get_by_index+0x5e/0x80 [ 291.324334][ T72] fib6_nh_init+0x3d8/0x15b0 [ 291.324334][ T72] ip6_route_info_create+0xf18/0x17d0 [ 291.324334][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 291.324334][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 291.324334][ T72] addrconf_join_anycast+0x1c0/0x220 [ 291.324334][ T72] dev_forward_change+0x2a6/0x7b0 [ 291.324334][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 291.324334][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 291.324334][ T72] proc_sys_call_handler+0x403/0x5e0 [ 291.324334][ T72] vfs_write+0x9e5/0x10a0 [ 291.324334][ T72] ksys_write+0xf5/0x1e0 [ 291.324334][ T72] do_syscall_64+0xc6/0x1e0 [ 291.324334][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.324334][ T72] [ 291.326239][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 291.326239][ T72] netdev_get_by_index+0x5e/0x80 [ 291.326239][ T72] fib6_nh_init+0x3d8/0x15b0 [ 291.326239][ T72] ip6_route_info_create+0xf18/0x17d0 [ 291.326239][ T72] addrconf_f6i_alloc+0x244/0x410 [ 291.326239][ T72] ipv6_add_addr+0x411/0x2000 [ 291.326239][ T72] inet6_addr_add+0x30e/0xa40 [ 291.326239][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 291.326239][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 291.326239][ T72] netlink_rcv_skb+0x130/0x360 [ 291.326239][ T72] netlink_unicast+0x449/0x710 [ 291.326239][ T72] netlink_sendmsg+0x723/0xbe0 [ 291.326239][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 291.326239][ T72] ___sys_sendmsg+0xee/0x170 [ 291.326239][ T72] __sys_sendmsg+0xcd/0x170 [ 291.326239][ T72] do_syscall_64+0xc6/0x1e0 [ 291.326239][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.326239][ T72] [ 291.328201][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 291.328201][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 291.328201][ T72] ipv6_find_idev+0x102/0x170 [ 291.328201][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 291.328201][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 291.328201][ T72] netlink_rcv_skb+0x130/0x360 [ 291.328201][ T72] netlink_unicast+0x449/0x710 [ 291.328201][ T72] netlink_sendmsg+0x723/0xbe0 [ 291.328201][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 291.328201][ T72] ___sys_sendmsg+0xee/0x170 [ 291.328201][ T72] __sys_sendmsg+0xcd/0x170 [ 291.328201][ T72] do_syscall_64+0xc6/0x1e0 [ 291.328201][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.328201][ T72] [ 291.329741][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 291.329741][ T72] neigh_parms_alloc+0x1e5/0x510 [ 291.329741][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 291.329741][ T72] ipv6_find_idev+0x102/0x170 [ 291.329741][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 291.329741][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 291.329741][ T72] netlink_rcv_skb+0x130/0x360 [ 291.329741][ T72] netlink_unicast+0x449/0x710 [ 291.329741][ T72] netlink_sendmsg+0x723/0xbe0 [ 291.329741][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 291.329741][ T72] ___sys_sendmsg+0xee/0x170 [ 291.329741][ T72] __sys_sendmsg+0xcd/0x170 [ 291.329741][ T72] do_syscall_64+0xc6/0x1e0 [ 291.329741][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.329741][ T72] [ 291.331764][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 291.332136][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 291.332136][ T72] dst_init+0x84/0x4a0 [ 291.332136][ T72] dst_alloc+0x97/0x150 [ 291.332136][ T72] ip6_dst_alloc+0x23/0x90 [ 291.332136][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 291.332136][ T72] ip6_pol_route+0x56f/0x840 [ 291.332136][ T72] fib6_rule_lookup+0x227/0x600 [ 291.332136][ T72] ip6_route_output_flags+0x251/0x460 [ 291.332136][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 291.332136][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 291.332136][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 291.332136][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 291.332136][ T72] ip6_datagram_connect+0x2c/0x50 [ 291.332136][ T72] __sys_connect+0x217/0x2a0 [ 291.332136][ T72] __x64_sys_connect+0x72/0xb0 [ 291.332136][ T72] do_syscall_64+0xc6/0x1e0 [ 291.332136][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 291.332136][ T72] [ 301.396826][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 301.397212][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 301.397212][ T72] netdev_get_by_index+0x5e/0x80 [ 301.397212][ T72] fib6_nh_init+0x3d8/0x15b0 [ 301.397212][ T72] ip6_route_info_create+0xf18/0x17d0 [ 301.397212][ T72] addrconf_f6i_alloc+0x244/0x410 [ 301.397212][ T72] ipv6_add_addr+0x411/0x2000 [ 301.397212][ T72] inet6_addr_add+0x30e/0xa40 [ 301.397212][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 301.397212][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 301.397212][ T72] netlink_rcv_skb+0x130/0x360 [ 301.397212][ T72] netlink_unicast+0x449/0x710 [ 301.397212][ T72] netlink_sendmsg+0x723/0xbe0 [ 301.397212][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 301.397212][ T72] ___sys_sendmsg+0xee/0x170 [ 301.397212][ T72] __sys_sendmsg+0xcd/0x170 [ 301.397212][ T72] do_syscall_64+0xc6/0x1e0 [ 301.397212][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.397212][ T72] [ 301.399232][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 301.399232][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 301.399232][ T72] ipv6_find_idev+0x102/0x170 [ 301.399232][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 301.399232][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 301.399232][ T72] netlink_rcv_skb+0x130/0x360 [ 301.399232][ T72] netlink_unicast+0x449/0x710 [ 301.399232][ T72] netlink_sendmsg+0x723/0xbe0 [ 301.399232][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 301.399232][ T72] ___sys_sendmsg+0xee/0x170 [ 301.399232][ T72] __sys_sendmsg+0xcd/0x170 [ 301.399232][ T72] do_syscall_64+0xc6/0x1e0 [ 301.399232][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.399232][ T72] [ 301.400783][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 301.400783][ T72] neigh_parms_alloc+0x1e5/0x510 [ 301.400783][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 301.400783][ T72] ipv6_find_idev+0x102/0x170 [ 301.400783][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 301.400783][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 301.400783][ T72] netlink_rcv_skb+0x130/0x360 [ 301.400783][ T72] netlink_unicast+0x449/0x710 [ 301.400783][ T72] netlink_sendmsg+0x723/0xbe0 [ 301.400783][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 301.400783][ T72] ___sys_sendmsg+0xee/0x170 [ 301.400783][ T72] __sys_sendmsg+0xcd/0x170 [ 301.400783][ T72] do_syscall_64+0xc6/0x1e0 [ 301.400783][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.400783][ T72] [ 301.402484][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 301.402761][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 301.402761][ T72] netdev_get_by_index+0x5e/0x80 [ 301.402761][ T72] fib6_nh_init+0x3d8/0x15b0 [ 301.402761][ T72] ip6_route_info_create+0xf18/0x17d0 [ 301.402761][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 301.402761][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 301.402761][ T72] addrconf_join_anycast+0x1c0/0x220 [ 301.402761][ T72] dev_forward_change+0x2a6/0x7b0 [ 301.402761][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 301.402761][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 301.402761][ T72] proc_sys_call_handler+0x403/0x5e0 [ 301.402761][ T72] vfs_write+0x9e5/0x10a0 [ 301.402761][ T72] ksys_write+0xf5/0x1e0 [ 301.402761][ T72] do_syscall_64+0xc6/0x1e0 [ 301.402761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.402761][ T72] [ 301.404580][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 301.404580][ T72] netdev_get_by_index+0x5e/0x80 [ 301.404580][ T72] fib6_nh_init+0x3d8/0x15b0 [ 301.404580][ T72] ip6_route_info_create+0xf18/0x17d0 [ 301.404580][ T72] addrconf_f6i_alloc+0x244/0x410 [ 301.404580][ T72] ipv6_add_addr+0x411/0x2000 [ 301.404580][ T72] inet6_addr_add+0x30e/0xa40 [ 301.404580][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 301.404580][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 301.404580][ T72] netlink_rcv_skb+0x130/0x360 [ 301.404580][ T72] netlink_unicast+0x449/0x710 [ 301.404580][ T72] netlink_sendmsg+0x723/0xbe0 [ 301.404580][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 301.404580][ T72] ___sys_sendmsg+0xee/0x170 [ 301.404580][ T72] __sys_sendmsg+0xcd/0x170 [ 301.404580][ T72] do_syscall_64+0xc6/0x1e0 [ 301.404580][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.404580][ T72] [ 301.406559][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 301.406559][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 301.406559][ T72] ipv6_find_idev+0x102/0x170 [ 301.406559][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 301.406559][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 301.406559][ T72] netlink_rcv_skb+0x130/0x360 [ 301.406559][ T72] netlink_unicast+0x449/0x710 [ 301.406559][ T72] netlink_sendmsg+0x723/0xbe0 [ 301.406559][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 301.406559][ T72] ___sys_sendmsg+0xee/0x170 [ 301.406559][ T72] __sys_sendmsg+0xcd/0x170 [ 301.406559][ T72] do_syscall_64+0xc6/0x1e0 [ 301.406559][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.406559][ T72] [ 301.408072][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 301.408072][ T72] neigh_parms_alloc+0x1e5/0x510 [ 301.408072][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 301.408072][ T72] ipv6_find_idev+0x102/0x170 [ 301.408072][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 301.408072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 301.408072][ T72] netlink_rcv_skb+0x130/0x360 [ 301.408072][ T72] netlink_unicast+0x449/0x710 [ 301.408072][ T72] netlink_sendmsg+0x723/0xbe0 [ 301.408072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 301.408072][ T72] ___sys_sendmsg+0xee/0x170 [ 301.408072][ T72] __sys_sendmsg+0xcd/0x170 [ 301.408072][ T72] do_syscall_64+0xc6/0x1e0 [ 301.408072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.408072][ T72] [ 301.409743][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 301.409984][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 301.409984][ T72] dst_init+0x84/0x4a0 [ 301.409984][ T72] dst_alloc+0x97/0x150 [ 301.409984][ T72] ip6_dst_alloc+0x23/0x90 [ 301.409984][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 301.409984][ T72] ip6_pol_route+0x56f/0x840 [ 301.409984][ T72] fib6_rule_lookup+0x227/0x600 [ 301.409984][ T72] ip6_route_output_flags+0x251/0x460 [ 301.409984][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 301.409984][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 301.409984][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 301.409984][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 301.409984][ T72] ip6_datagram_connect+0x2c/0x50 [ 301.409984][ T72] __sys_connect+0x217/0x2a0 [ 301.409984][ T72] __x64_sys_connect+0x72/0xb0 [ 301.409984][ T72] do_syscall_64+0xc6/0x1e0 [ 301.409984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 301.409984][ T72] [ 311.476613][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 311.477058][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 311.477058][ T72] netdev_get_by_index+0x5e/0x80 [ 311.477058][ T72] fib6_nh_init+0x3d8/0x15b0 [ 311.477058][ T72] ip6_route_info_create+0xf18/0x17d0 [ 311.477058][ T72] addrconf_f6i_alloc+0x244/0x410 [ 311.477058][ T72] ipv6_add_addr+0x411/0x2000 [ 311.477058][ T72] inet6_addr_add+0x30e/0xa40 [ 311.477058][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 311.477058][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 311.477058][ T72] netlink_rcv_skb+0x130/0x360 [ 311.477058][ T72] netlink_unicast+0x449/0x710 [ 311.477058][ T72] netlink_sendmsg+0x723/0xbe0 [ 311.477058][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 311.477058][ T72] ___sys_sendmsg+0xee/0x170 [ 311.477058][ T72] __sys_sendmsg+0xcd/0x170 [ 311.477058][ T72] do_syscall_64+0xc6/0x1e0 [ 311.477058][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.477058][ T72] [ 311.479095][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 311.479095][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 311.479095][ T72] ipv6_find_idev+0x102/0x170 [ 311.479095][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 311.479095][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 311.479095][ T72] netlink_rcv_skb+0x130/0x360 [ 311.479095][ T72] netlink_unicast+0x449/0x710 [ 311.479095][ T72] netlink_sendmsg+0x723/0xbe0 [ 311.479095][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 311.479095][ T72] ___sys_sendmsg+0xee/0x170 [ 311.479095][ T72] __sys_sendmsg+0xcd/0x170 [ 311.479095][ T72] do_syscall_64+0xc6/0x1e0 [ 311.479095][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.479095][ T72] [ 311.480661][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 311.480661][ T72] neigh_parms_alloc+0x1e5/0x510 [ 311.480661][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 311.480661][ T72] ipv6_find_idev+0x102/0x170 [ 311.480661][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 311.480661][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 311.480661][ T72] netlink_rcv_skb+0x130/0x360 [ 311.480661][ T72] netlink_unicast+0x449/0x710 [ 311.480661][ T72] netlink_sendmsg+0x723/0xbe0 [ 311.480661][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 311.480661][ T72] ___sys_sendmsg+0xee/0x170 [ 311.480661][ T72] __sys_sendmsg+0xcd/0x170 [ 311.480661][ T72] do_syscall_64+0xc6/0x1e0 [ 311.480661][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.480661][ T72] [ 311.482534][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 311.482935][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 311.482935][ T72] netdev_get_by_index+0x5e/0x80 [ 311.482935][ T72] fib6_nh_init+0x3d8/0x15b0 [ 311.482935][ T72] ip6_route_info_create+0xf18/0x17d0 [ 311.482935][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 311.482935][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 311.482935][ T72] addrconf_join_anycast+0x1c0/0x220 [ 311.482935][ T72] dev_forward_change+0x2a6/0x7b0 [ 311.482935][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 311.482935][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 311.482935][ T72] proc_sys_call_handler+0x403/0x5e0 [ 311.482935][ T72] vfs_write+0x9e5/0x10a0 [ 311.482935][ T72] ksys_write+0xf5/0x1e0 [ 311.482935][ T72] do_syscall_64+0xc6/0x1e0 [ 311.482935][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.482935][ T72] [ 311.484793][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 311.484793][ T72] netdev_get_by_index+0x5e/0x80 [ 311.484793][ T72] fib6_nh_init+0x3d8/0x15b0 [ 311.484793][ T72] ip6_route_info_create+0xf18/0x17d0 [ 311.484793][ T72] addrconf_f6i_alloc+0x244/0x410 [ 311.484793][ T72] ipv6_add_addr+0x411/0x2000 [ 311.484793][ T72] inet6_addr_add+0x30e/0xa40 [ 311.484793][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 311.484793][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 311.484793][ T72] netlink_rcv_skb+0x130/0x360 [ 311.484793][ T72] netlink_unicast+0x449/0x710 [ 311.484793][ T72] netlink_sendmsg+0x723/0xbe0 [ 311.484793][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 311.484793][ T72] ___sys_sendmsg+0xee/0x170 [ 311.484793][ T72] __sys_sendmsg+0xcd/0x170 [ 311.484793][ T72] do_syscall_64+0xc6/0x1e0 [ 311.484793][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.484793][ T72] [ 311.486780][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 311.486780][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 311.486780][ T72] ipv6_find_idev+0x102/0x170 [ 311.486780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 311.486780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 311.486780][ T72] netlink_rcv_skb+0x130/0x360 [ 311.486780][ T72] netlink_unicast+0x449/0x710 [ 311.486780][ T72] netlink_sendmsg+0x723/0xbe0 [ 311.486780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 311.486780][ T72] ___sys_sendmsg+0xee/0x170 [ 311.486780][ T72] __sys_sendmsg+0xcd/0x170 [ 311.486780][ T72] do_syscall_64+0xc6/0x1e0 [ 311.486780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.486780][ T72] [ 311.488305][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 311.488305][ T72] neigh_parms_alloc+0x1e5/0x510 [ 311.488305][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 311.488305][ T72] ipv6_find_idev+0x102/0x170 [ 311.488305][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 311.488305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 311.488305][ T72] netlink_rcv_skb+0x130/0x360 [ 311.488305][ T72] netlink_unicast+0x449/0x710 [ 311.488305][ T72] netlink_sendmsg+0x723/0xbe0 [ 311.488305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 311.488305][ T72] ___sys_sendmsg+0xee/0x170 [ 311.488305][ T72] __sys_sendmsg+0xcd/0x170 [ 311.488305][ T72] do_syscall_64+0xc6/0x1e0 [ 311.488305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.488305][ T72] [ 311.490153][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 311.490550][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 311.490550][ T72] dst_init+0x84/0x4a0 [ 311.490550][ T72] dst_alloc+0x97/0x150 [ 311.490550][ T72] ip6_dst_alloc+0x23/0x90 [ 311.490550][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 311.490550][ T72] ip6_pol_route+0x56f/0x840 [ 311.490550][ T72] fib6_rule_lookup+0x227/0x600 [ 311.490550][ T72] ip6_route_output_flags+0x251/0x460 [ 311.490550][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 311.490550][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 311.490550][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 311.490550][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 311.490550][ T72] ip6_datagram_connect+0x2c/0x50 [ 311.490550][ T72] __sys_connect+0x217/0x2a0 [ 311.490550][ T72] __x64_sys_connect+0x72/0xb0 [ 311.490550][ T72] do_syscall_64+0xc6/0x1e0 [ 311.490550][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 311.490550][ T72] [ 321.613687][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 321.614035][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 321.614035][ T72] netdev_get_by_index+0x5e/0x80 [ 321.614035][ T72] fib6_nh_init+0x3d8/0x15b0 [ 321.614035][ T72] ip6_route_info_create+0xf18/0x17d0 [ 321.614035][ T72] addrconf_f6i_alloc+0x244/0x410 [ 321.614035][ T72] ipv6_add_addr+0x411/0x2000 [ 321.614035][ T72] inet6_addr_add+0x30e/0xa40 [ 321.614035][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 321.614035][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 321.614035][ T72] netlink_rcv_skb+0x130/0x360 [ 321.614035][ T72] netlink_unicast+0x449/0x710 [ 321.614035][ T72] netlink_sendmsg+0x723/0xbe0 [ 321.614035][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 321.614035][ T72] ___sys_sendmsg+0xee/0x170 [ 321.614035][ T72] __sys_sendmsg+0xcd/0x170 [ 321.614035][ T72] do_syscall_64+0xc6/0x1e0 [ 321.614035][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.614035][ T72] [ 321.616082][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 321.616082][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 321.616082][ T72] ipv6_find_idev+0x102/0x170 [ 321.616082][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 321.616082][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 321.616082][ T72] netlink_rcv_skb+0x130/0x360 [ 321.616082][ T72] netlink_unicast+0x449/0x710 [ 321.616082][ T72] netlink_sendmsg+0x723/0xbe0 [ 321.616082][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 321.616082][ T72] ___sys_sendmsg+0xee/0x170 [ 321.616082][ T72] __sys_sendmsg+0xcd/0x170 [ 321.616082][ T72] do_syscall_64+0xc6/0x1e0 [ 321.616082][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.616082][ T72] [ 321.617659][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 321.617659][ T72] neigh_parms_alloc+0x1e5/0x510 [ 321.617659][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 321.617659][ T72] ipv6_find_idev+0x102/0x170 [ 321.617659][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 321.617659][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 321.617659][ T72] netlink_rcv_skb+0x130/0x360 [ 321.617659][ T72] netlink_unicast+0x449/0x710 [ 321.617659][ T72] netlink_sendmsg+0x723/0xbe0 [ 321.617659][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 321.617659][ T72] ___sys_sendmsg+0xee/0x170 [ 321.617659][ T72] __sys_sendmsg+0xcd/0x170 [ 321.617659][ T72] do_syscall_64+0xc6/0x1e0 [ 321.617659][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.617659][ T72] [ 321.619458][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 321.619761][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 321.619761][ T72] netdev_get_by_index+0x5e/0x80 [ 321.619761][ T72] fib6_nh_init+0x3d8/0x15b0 [ 321.619761][ T72] ip6_route_info_create+0xf18/0x17d0 [ 321.619761][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 321.619761][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 321.619761][ T72] addrconf_join_anycast+0x1c0/0x220 [ 321.619761][ T72] dev_forward_change+0x2a6/0x7b0 [ 321.619761][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 321.619761][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 321.619761][ T72] proc_sys_call_handler+0x403/0x5e0 [ 321.619761][ T72] vfs_write+0x9e5/0x10a0 [ 321.619761][ T72] ksys_write+0xf5/0x1e0 [ 321.619761][ T72] do_syscall_64+0xc6/0x1e0 [ 321.619761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.619761][ T72] [ 321.621734][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 321.621734][ T72] netdev_get_by_index+0x5e/0x80 [ 321.621734][ T72] fib6_nh_init+0x3d8/0x15b0 [ 321.621734][ T72] ip6_route_info_create+0xf18/0x17d0 [ 321.621734][ T72] addrconf_f6i_alloc+0x244/0x410 [ 321.621734][ T72] ipv6_add_addr+0x411/0x2000 [ 321.621734][ T72] inet6_addr_add+0x30e/0xa40 [ 321.621734][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 321.621734][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 321.621734][ T72] netlink_rcv_skb+0x130/0x360 [ 321.621734][ T72] netlink_unicast+0x449/0x710 [ 321.621734][ T72] netlink_sendmsg+0x723/0xbe0 [ 321.621734][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 321.621734][ T72] ___sys_sendmsg+0xee/0x170 [ 321.621734][ T72] __sys_sendmsg+0xcd/0x170 [ 321.621734][ T72] do_syscall_64+0xc6/0x1e0 [ 321.621734][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.621734][ T72] [ 321.623760][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 321.623760][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 321.623760][ T72] ipv6_find_idev+0x102/0x170 [ 321.623760][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 321.623760][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 321.623760][ T72] netlink_rcv_skb+0x130/0x360 [ 321.623760][ T72] netlink_unicast+0x449/0x710 [ 321.623760][ T72] netlink_sendmsg+0x723/0xbe0 [ 321.623760][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 321.623760][ T72] ___sys_sendmsg+0xee/0x170 [ 321.623760][ T72] __sys_sendmsg+0xcd/0x170 [ 321.623760][ T72] do_syscall_64+0xc6/0x1e0 [ 321.623760][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.623760][ T72] [ 321.625318][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 321.625318][ T72] neigh_parms_alloc+0x1e5/0x510 [ 321.625318][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 321.625318][ T72] ipv6_find_idev+0x102/0x170 [ 321.625318][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 321.625318][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 321.625318][ T72] netlink_rcv_skb+0x130/0x360 [ 321.625318][ T72] netlink_unicast+0x449/0x710 [ 321.625318][ T72] netlink_sendmsg+0x723/0xbe0 [ 321.625318][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 321.625318][ T72] ___sys_sendmsg+0xee/0x170 [ 321.625318][ T72] __sys_sendmsg+0xcd/0x170 [ 321.625318][ T72] do_syscall_64+0xc6/0x1e0 [ 321.625318][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.625318][ T72] [ 321.627343][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 321.627592][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 321.627592][ T72] dst_init+0x84/0x4a0 [ 321.627592][ T72] dst_alloc+0x97/0x150 [ 321.627592][ T72] ip6_dst_alloc+0x23/0x90 [ 321.627592][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 321.627592][ T72] ip6_pol_route+0x56f/0x840 [ 321.627592][ T72] fib6_rule_lookup+0x227/0x600 [ 321.627592][ T72] ip6_route_output_flags+0x251/0x460 [ 321.627592][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 321.627592][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 321.627592][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 321.627592][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 321.627592][ T72] ip6_datagram_connect+0x2c/0x50 [ 321.627592][ T72] __sys_connect+0x217/0x2a0 [ 321.627592][ T72] __x64_sys_connect+0x72/0xb0 [ 321.627592][ T72] do_syscall_64+0xc6/0x1e0 [ 321.627592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 321.627592][ T72] [ 331.724630][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 331.725023][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 331.725023][ T72] netdev_get_by_index+0x5e/0x80 [ 331.725023][ T72] fib6_nh_init+0x3d8/0x15b0 [ 331.725023][ T72] ip6_route_info_create+0xf18/0x17d0 [ 331.725023][ T72] addrconf_f6i_alloc+0x244/0x410 [ 331.725023][ T72] ipv6_add_addr+0x411/0x2000 [ 331.725023][ T72] inet6_addr_add+0x30e/0xa40 [ 331.725023][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 331.725023][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 331.725023][ T72] netlink_rcv_skb+0x130/0x360 [ 331.725023][ T72] netlink_unicast+0x449/0x710 [ 331.725023][ T72] netlink_sendmsg+0x723/0xbe0 [ 331.725023][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 331.725023][ T72] ___sys_sendmsg+0xee/0x170 [ 331.725023][ T72] __sys_sendmsg+0xcd/0x170 [ 331.725023][ T72] do_syscall_64+0xc6/0x1e0 [ 331.725023][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.725023][ T72] [ 331.727138][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 331.727138][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 331.727138][ T72] ipv6_find_idev+0x102/0x170 [ 331.727138][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 331.727138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 331.727138][ T72] netlink_rcv_skb+0x130/0x360 [ 331.727138][ T72] netlink_unicast+0x449/0x710 [ 331.727138][ T72] netlink_sendmsg+0x723/0xbe0 [ 331.727138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 331.727138][ T72] ___sys_sendmsg+0xee/0x170 [ 331.727138][ T72] __sys_sendmsg+0xcd/0x170 [ 331.727138][ T72] do_syscall_64+0xc6/0x1e0 [ 331.727138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.727138][ T72] [ 331.728739][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 331.728739][ T72] neigh_parms_alloc+0x1e5/0x510 [ 331.728739][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 331.728739][ T72] ipv6_find_idev+0x102/0x170 [ 331.728739][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 331.728739][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 331.728739][ T72] netlink_rcv_skb+0x130/0x360 [ 331.728739][ T72] netlink_unicast+0x449/0x710 [ 331.728739][ T72] netlink_sendmsg+0x723/0xbe0 [ 331.728739][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 331.728739][ T72] ___sys_sendmsg+0xee/0x170 [ 331.728739][ T72] __sys_sendmsg+0xcd/0x170 [ 331.728739][ T72] do_syscall_64+0xc6/0x1e0 [ 331.728739][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.728739][ T72] [ 331.730613][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 331.730936][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 331.730936][ T72] netdev_get_by_index+0x5e/0x80 [ 331.730936][ T72] fib6_nh_init+0x3d8/0x15b0 [ 331.730936][ T72] ip6_route_info_create+0xf18/0x17d0 [ 331.730936][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 331.730936][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 331.730936][ T72] addrconf_join_anycast+0x1c0/0x220 [ 331.730936][ T72] dev_forward_change+0x2a6/0x7b0 [ 331.730936][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 331.730936][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 331.730936][ T72] proc_sys_call_handler+0x403/0x5e0 [ 331.730936][ T72] vfs_write+0x9e5/0x10a0 [ 331.730936][ T72] ksys_write+0xf5/0x1e0 [ 331.730936][ T72] do_syscall_64+0xc6/0x1e0 [ 331.730936][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.730936][ T72] [ 331.733106][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 331.733106][ T72] netdev_get_by_index+0x5e/0x80 [ 331.733106][ T72] fib6_nh_init+0x3d8/0x15b0 [ 331.733106][ T72] ip6_route_info_create+0xf18/0x17d0 [ 331.733106][ T72] addrconf_f6i_alloc+0x244/0x410 [ 331.733106][ T72] ipv6_add_addr+0x411/0x2000 [ 331.733106][ T72] inet6_addr_add+0x30e/0xa40 [ 331.733106][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 331.733106][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 331.733106][ T72] netlink_rcv_skb+0x130/0x360 [ 331.733106][ T72] netlink_unicast+0x449/0x710 [ 331.733106][ T72] netlink_sendmsg+0x723/0xbe0 [ 331.733106][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 331.733106][ T72] ___sys_sendmsg+0xee/0x170 [ 331.733106][ T72] __sys_sendmsg+0xcd/0x170 [ 331.733106][ T72] do_syscall_64+0xc6/0x1e0 [ 331.733106][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.733106][ T72] [ 331.735087][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 331.735087][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 331.735087][ T72] ipv6_find_idev+0x102/0x170 [ 331.735087][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 331.735087][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 331.735087][ T72] netlink_rcv_skb+0x130/0x360 [ 331.735087][ T72] netlink_unicast+0x449/0x710 [ 331.735087][ T72] netlink_sendmsg+0x723/0xbe0 [ 331.735087][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 331.735087][ T72] ___sys_sendmsg+0xee/0x170 [ 331.735087][ T72] __sys_sendmsg+0xcd/0x170 [ 331.735087][ T72] do_syscall_64+0xc6/0x1e0 [ 331.735087][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.735087][ T72] [ 331.736610][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 331.736610][ T72] neigh_parms_alloc+0x1e5/0x510 [ 331.736610][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 331.736610][ T72] ipv6_find_idev+0x102/0x170 [ 331.736610][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 331.736610][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 331.736610][ T72] netlink_rcv_skb+0x130/0x360 [ 331.736610][ T72] netlink_unicast+0x449/0x710 [ 331.736610][ T72] netlink_sendmsg+0x723/0xbe0 [ 331.736610][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 331.736610][ T72] ___sys_sendmsg+0xee/0x170 [ 331.736610][ T72] __sys_sendmsg+0xcd/0x170 [ 331.736610][ T72] do_syscall_64+0xc6/0x1e0 [ 331.736610][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.736610][ T72] [ 331.738322][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 331.738590][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 331.738590][ T72] dst_init+0x84/0x4a0 [ 331.738590][ T72] dst_alloc+0x97/0x150 [ 331.738590][ T72] ip6_dst_alloc+0x23/0x90 [ 331.738590][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 331.738590][ T72] ip6_pol_route+0x56f/0x840 [ 331.738590][ T72] fib6_rule_lookup+0x227/0x600 [ 331.738590][ T72] ip6_route_output_flags+0x251/0x460 [ 331.738590][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 331.738590][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 331.738590][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 331.738590][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 331.738590][ T72] ip6_datagram_connect+0x2c/0x50 [ 331.738590][ T72] __sys_connect+0x217/0x2a0 [ 331.738590][ T72] __x64_sys_connect+0x72/0xb0 [ 331.738590][ T72] do_syscall_64+0xc6/0x1e0 [ 331.738590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 331.738590][ T72] [ 341.820686][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 341.821117][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 341.821117][ T72] netdev_get_by_index+0x5e/0x80 [ 341.821117][ T72] fib6_nh_init+0x3d8/0x15b0 [ 341.821117][ T72] ip6_route_info_create+0xf18/0x17d0 [ 341.821117][ T72] addrconf_f6i_alloc+0x244/0x410 [ 341.821117][ T72] ipv6_add_addr+0x411/0x2000 [ 341.821117][ T72] inet6_addr_add+0x30e/0xa40 [ 341.821117][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 341.821117][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 341.821117][ T72] netlink_rcv_skb+0x130/0x360 [ 341.821117][ T72] netlink_unicast+0x449/0x710 [ 341.821117][ T72] netlink_sendmsg+0x723/0xbe0 [ 341.821117][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 341.821117][ T72] ___sys_sendmsg+0xee/0x170 [ 341.821117][ T72] __sys_sendmsg+0xcd/0x170 [ 341.821117][ T72] do_syscall_64+0xc6/0x1e0 [ 341.821117][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.821117][ T72] [ 341.823119][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 341.823119][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 341.823119][ T72] ipv6_find_idev+0x102/0x170 [ 341.823119][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 341.823119][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 341.823119][ T72] netlink_rcv_skb+0x130/0x360 [ 341.823119][ T72] netlink_unicast+0x449/0x710 [ 341.823119][ T72] netlink_sendmsg+0x723/0xbe0 [ 341.823119][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 341.823119][ T72] ___sys_sendmsg+0xee/0x170 [ 341.823119][ T72] __sys_sendmsg+0xcd/0x170 [ 341.823119][ T72] do_syscall_64+0xc6/0x1e0 [ 341.823119][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.823119][ T72] [ 341.824649][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 341.824649][ T72] neigh_parms_alloc+0x1e5/0x510 [ 341.824649][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 341.824649][ T72] ipv6_find_idev+0x102/0x170 [ 341.824649][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 341.824649][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 341.824649][ T72] netlink_rcv_skb+0x130/0x360 [ 341.824649][ T72] netlink_unicast+0x449/0x710 [ 341.824649][ T72] netlink_sendmsg+0x723/0xbe0 [ 341.824649][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 341.824649][ T72] ___sys_sendmsg+0xee/0x170 [ 341.824649][ T72] __sys_sendmsg+0xcd/0x170 [ 341.824649][ T72] do_syscall_64+0xc6/0x1e0 [ 341.824649][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.824649][ T72] [ 341.826325][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 341.826599][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 341.826599][ T72] netdev_get_by_index+0x5e/0x80 [ 341.826599][ T72] fib6_nh_init+0x3d8/0x15b0 [ 341.826599][ T72] ip6_route_info_create+0xf18/0x17d0 [ 341.826599][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 341.826599][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 341.826599][ T72] addrconf_join_anycast+0x1c0/0x220 [ 341.826599][ T72] dev_forward_change+0x2a6/0x7b0 [ 341.826599][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 341.826599][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 341.826599][ T72] proc_sys_call_handler+0x403/0x5e0 [ 341.826599][ T72] vfs_write+0x9e5/0x10a0 [ 341.826599][ T72] ksys_write+0xf5/0x1e0 [ 341.826599][ T72] do_syscall_64+0xc6/0x1e0 [ 341.826599][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.826599][ T72] [ 341.828431][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 341.828431][ T72] netdev_get_by_index+0x5e/0x80 [ 341.828431][ T72] fib6_nh_init+0x3d8/0x15b0 [ 341.828431][ T72] ip6_route_info_create+0xf18/0x17d0 [ 341.828431][ T72] addrconf_f6i_alloc+0x244/0x410 [ 341.828431][ T72] ipv6_add_addr+0x411/0x2000 [ 341.828431][ T72] inet6_addr_add+0x30e/0xa40 [ 341.828431][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 341.828431][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 341.828431][ T72] netlink_rcv_skb+0x130/0x360 [ 341.828431][ T72] netlink_unicast+0x449/0x710 [ 341.828431][ T72] netlink_sendmsg+0x723/0xbe0 [ 341.828431][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 341.828431][ T72] ___sys_sendmsg+0xee/0x170 [ 341.828431][ T72] __sys_sendmsg+0xcd/0x170 [ 341.828431][ T72] do_syscall_64+0xc6/0x1e0 [ 341.828431][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.828431][ T72] [ 341.830411][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 341.830411][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 341.830411][ T72] ipv6_find_idev+0x102/0x170 [ 341.830411][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 341.830411][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 341.830411][ T72] netlink_rcv_skb+0x130/0x360 [ 341.830411][ T72] netlink_unicast+0x449/0x710 [ 341.830411][ T72] netlink_sendmsg+0x723/0xbe0 [ 341.830411][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 341.830411][ T72] ___sys_sendmsg+0xee/0x170 [ 341.830411][ T72] __sys_sendmsg+0xcd/0x170 [ 341.830411][ T72] do_syscall_64+0xc6/0x1e0 [ 341.830411][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.830411][ T72] [ 341.831913][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 341.831913][ T72] neigh_parms_alloc+0x1e5/0x510 [ 341.831913][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 341.831913][ T72] ipv6_find_idev+0x102/0x170 [ 341.831913][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 341.831913][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 341.831913][ T72] netlink_rcv_skb+0x130/0x360 [ 341.831913][ T72] netlink_unicast+0x449/0x710 [ 341.831913][ T72] netlink_sendmsg+0x723/0xbe0 [ 341.831913][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 341.831913][ T72] ___sys_sendmsg+0xee/0x170 [ 341.831913][ T72] __sys_sendmsg+0xcd/0x170 [ 341.831913][ T72] do_syscall_64+0xc6/0x1e0 [ 341.831913][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.831913][ T72] [ 341.833561][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 341.833803][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 341.833803][ T72] dst_init+0x84/0x4a0 [ 341.833803][ T72] dst_alloc+0x97/0x150 [ 341.833803][ T72] ip6_dst_alloc+0x23/0x90 [ 341.833803][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 341.833803][ T72] ip6_pol_route+0x56f/0x840 [ 341.833803][ T72] fib6_rule_lookup+0x227/0x600 [ 341.833803][ T72] ip6_route_output_flags+0x251/0x460 [ 341.833803][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 341.833803][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 341.833803][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 341.833803][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 341.833803][ T72] ip6_datagram_connect+0x2c/0x50 [ 341.833803][ T72] __sys_connect+0x217/0x2a0 [ 341.833803][ T72] __x64_sys_connect+0x72/0xb0 [ 341.833803][ T72] do_syscall_64+0xc6/0x1e0 [ 341.833803][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 341.833803][ T72] [ 351.916631][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 351.917060][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 351.917060][ T72] netdev_get_by_index+0x5e/0x80 [ 351.917060][ T72] fib6_nh_init+0x3d8/0x15b0 [ 351.917060][ T72] ip6_route_info_create+0xf18/0x17d0 [ 351.917060][ T72] addrconf_f6i_alloc+0x244/0x410 [ 351.917060][ T72] ipv6_add_addr+0x411/0x2000 [ 351.917060][ T72] inet6_addr_add+0x30e/0xa40 [ 351.917060][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 351.917060][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 351.917060][ T72] netlink_rcv_skb+0x130/0x360 [ 351.917060][ T72] netlink_unicast+0x449/0x710 [ 351.917060][ T72] netlink_sendmsg+0x723/0xbe0 [ 351.917060][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 351.917060][ T72] ___sys_sendmsg+0xee/0x170 [ 351.917060][ T72] __sys_sendmsg+0xcd/0x170 [ 351.917060][ T72] do_syscall_64+0xc6/0x1e0 [ 351.917060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.917060][ T72] [ 351.919061][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 351.919061][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 351.919061][ T72] ipv6_find_idev+0x102/0x170 [ 351.919061][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 351.919061][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 351.919061][ T72] netlink_rcv_skb+0x130/0x360 [ 351.919061][ T72] netlink_unicast+0x449/0x710 [ 351.919061][ T72] netlink_sendmsg+0x723/0xbe0 [ 351.919061][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 351.919061][ T72] ___sys_sendmsg+0xee/0x170 [ 351.919061][ T72] __sys_sendmsg+0xcd/0x170 [ 351.919061][ T72] do_syscall_64+0xc6/0x1e0 [ 351.919061][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.919061][ T72] [ 351.920590][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 351.920590][ T72] neigh_parms_alloc+0x1e5/0x510 [ 351.920590][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 351.920590][ T72] ipv6_find_idev+0x102/0x170 [ 351.920590][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 351.920590][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 351.920590][ T72] netlink_rcv_skb+0x130/0x360 [ 351.920590][ T72] netlink_unicast+0x449/0x710 [ 351.920590][ T72] netlink_sendmsg+0x723/0xbe0 [ 351.920590][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 351.920590][ T72] ___sys_sendmsg+0xee/0x170 [ 351.920590][ T72] __sys_sendmsg+0xcd/0x170 [ 351.920590][ T72] do_syscall_64+0xc6/0x1e0 [ 351.920590][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.920590][ T72] [ 351.922263][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 351.922582][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 351.922582][ T72] netdev_get_by_index+0x5e/0x80 [ 351.922582][ T72] fib6_nh_init+0x3d8/0x15b0 [ 351.922582][ T72] ip6_route_info_create+0xf18/0x17d0 [ 351.922582][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 351.922582][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 351.922582][ T72] addrconf_join_anycast+0x1c0/0x220 [ 351.922582][ T72] dev_forward_change+0x2a6/0x7b0 [ 351.922582][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 351.922582][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 351.922582][ T72] proc_sys_call_handler+0x403/0x5e0 [ 351.922582][ T72] vfs_write+0x9e5/0x10a0 [ 351.922582][ T72] ksys_write+0xf5/0x1e0 [ 351.922582][ T72] do_syscall_64+0xc6/0x1e0 [ 351.922582][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.922582][ T72] [ 351.924396][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 351.924396][ T72] netdev_get_by_index+0x5e/0x80 [ 351.924396][ T72] fib6_nh_init+0x3d8/0x15b0 [ 351.924396][ T72] ip6_route_info_create+0xf18/0x17d0 [ 351.924396][ T72] addrconf_f6i_alloc+0x244/0x410 [ 351.924396][ T72] ipv6_add_addr+0x411/0x2000 [ 351.924396][ T72] inet6_addr_add+0x30e/0xa40 [ 351.924396][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 351.924396][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 351.924396][ T72] netlink_rcv_skb+0x130/0x360 [ 351.924396][ T72] netlink_unicast+0x449/0x710 [ 351.924396][ T72] netlink_sendmsg+0x723/0xbe0 [ 351.924396][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 351.924396][ T72] ___sys_sendmsg+0xee/0x170 [ 351.924396][ T72] __sys_sendmsg+0xcd/0x170 [ 351.924396][ T72] do_syscall_64+0xc6/0x1e0 [ 351.924396][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.924396][ T72] [ 351.926360][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 351.926360][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 351.926360][ T72] ipv6_find_idev+0x102/0x170 [ 351.926360][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 351.926360][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 351.926360][ T72] netlink_rcv_skb+0x130/0x360 [ 351.926360][ T72] netlink_unicast+0x449/0x710 [ 351.926360][ T72] netlink_sendmsg+0x723/0xbe0 [ 351.926360][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 351.926360][ T72] ___sys_sendmsg+0xee/0x170 [ 351.926360][ T72] __sys_sendmsg+0xcd/0x170 [ 351.926360][ T72] do_syscall_64+0xc6/0x1e0 [ 351.926360][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.926360][ T72] [ 351.927871][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 351.927871][ T72] neigh_parms_alloc+0x1e5/0x510 [ 351.927871][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 351.927871][ T72] ipv6_find_idev+0x102/0x170 [ 351.927871][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 351.927871][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 351.927871][ T72] netlink_rcv_skb+0x130/0x360 [ 351.927871][ T72] netlink_unicast+0x449/0x710 [ 351.927871][ T72] netlink_sendmsg+0x723/0xbe0 [ 351.927871][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 351.927871][ T72] ___sys_sendmsg+0xee/0x170 [ 351.927871][ T72] __sys_sendmsg+0xcd/0x170 [ 351.927871][ T72] do_syscall_64+0xc6/0x1e0 [ 351.927871][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.927871][ T72] [ 351.929538][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 351.929822][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 351.929822][ T72] dst_init+0x84/0x4a0 [ 351.929822][ T72] dst_alloc+0x97/0x150 [ 351.929822][ T72] ip6_dst_alloc+0x23/0x90 [ 351.929822][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 351.929822][ T72] ip6_pol_route+0x56f/0x840 [ 351.929822][ T72] fib6_rule_lookup+0x227/0x600 [ 351.929822][ T72] ip6_route_output_flags+0x251/0x460 [ 351.929822][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 351.929822][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 351.929822][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 351.929822][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 351.929822][ T72] ip6_datagram_connect+0x2c/0x50 [ 351.929822][ T72] __sys_connect+0x217/0x2a0 [ 351.929822][ T72] __x64_sys_connect+0x72/0xb0 [ 351.929822][ T72] do_syscall_64+0xc6/0x1e0 [ 351.929822][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 351.929822][ T72] [ 362.052764][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 362.053189][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 362.053189][ T72] netdev_get_by_index+0x5e/0x80 [ 362.053189][ T72] fib6_nh_init+0x3d8/0x15b0 [ 362.053189][ T72] ip6_route_info_create+0xf18/0x17d0 [ 362.053189][ T72] addrconf_f6i_alloc+0x244/0x410 [ 362.053189][ T72] ipv6_add_addr+0x411/0x2000 [ 362.053189][ T72] inet6_addr_add+0x30e/0xa40 [ 362.053189][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 362.053189][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 362.053189][ T72] netlink_rcv_skb+0x130/0x360 [ 362.053189][ T72] netlink_unicast+0x449/0x710 [ 362.053189][ T72] netlink_sendmsg+0x723/0xbe0 [ 362.053189][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 362.053189][ T72] ___sys_sendmsg+0xee/0x170 [ 362.053189][ T72] __sys_sendmsg+0xcd/0x170 [ 362.053189][ T72] do_syscall_64+0xc6/0x1e0 [ 362.053189][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.053189][ T72] [ 362.055214][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 362.055214][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 362.055214][ T72] ipv6_find_idev+0x102/0x170 [ 362.055214][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 362.055214][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 362.055214][ T72] netlink_rcv_skb+0x130/0x360 [ 362.055214][ T72] netlink_unicast+0x449/0x710 [ 362.055214][ T72] netlink_sendmsg+0x723/0xbe0 [ 362.055214][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 362.055214][ T72] ___sys_sendmsg+0xee/0x170 [ 362.055214][ T72] __sys_sendmsg+0xcd/0x170 [ 362.055214][ T72] do_syscall_64+0xc6/0x1e0 [ 362.055214][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.055214][ T72] [ 362.056744][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 362.056744][ T72] neigh_parms_alloc+0x1e5/0x510 [ 362.056744][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 362.056744][ T72] ipv6_find_idev+0x102/0x170 [ 362.056744][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 362.056744][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 362.056744][ T72] netlink_rcv_skb+0x130/0x360 [ 362.056744][ T72] netlink_unicast+0x449/0x710 [ 362.056744][ T72] netlink_sendmsg+0x723/0xbe0 [ 362.056744][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 362.056744][ T72] ___sys_sendmsg+0xee/0x170 [ 362.056744][ T72] __sys_sendmsg+0xcd/0x170 [ 362.056744][ T72] do_syscall_64+0xc6/0x1e0 [ 362.056744][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.056744][ T72] [ 362.058436][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 362.058721][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 362.058721][ T72] netdev_get_by_index+0x5e/0x80 [ 362.058721][ T72] fib6_nh_init+0x3d8/0x15b0 [ 362.058721][ T72] ip6_route_info_create+0xf18/0x17d0 [ 362.058721][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 362.058721][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 362.058721][ T72] addrconf_join_anycast+0x1c0/0x220 [ 362.058721][ T72] dev_forward_change+0x2a6/0x7b0 [ 362.058721][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 362.058721][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 362.058721][ T72] proc_sys_call_handler+0x403/0x5e0 [ 362.058721][ T72] vfs_write+0x9e5/0x10a0 [ 362.058721][ T72] ksys_write+0xf5/0x1e0 [ 362.058721][ T72] do_syscall_64+0xc6/0x1e0 [ 362.058721][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.058721][ T72] [ 362.060551][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 362.060551][ T72] netdev_get_by_index+0x5e/0x80 [ 362.060551][ T72] fib6_nh_init+0x3d8/0x15b0 [ 362.060551][ T72] ip6_route_info_create+0xf18/0x17d0 [ 362.060551][ T72] addrconf_f6i_alloc+0x244/0x410 [ 362.060551][ T72] ipv6_add_addr+0x411/0x2000 [ 362.060551][ T72] inet6_addr_add+0x30e/0xa40 [ 362.060551][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 362.060551][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 362.060551][ T72] netlink_rcv_skb+0x130/0x360 [ 362.060551][ T72] netlink_unicast+0x449/0x710 [ 362.060551][ T72] netlink_sendmsg+0x723/0xbe0 [ 362.060551][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 362.060551][ T72] ___sys_sendmsg+0xee/0x170 [ 362.060551][ T72] __sys_sendmsg+0xcd/0x170 [ 362.060551][ T72] do_syscall_64+0xc6/0x1e0 [ 362.060551][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.060551][ T72] [ 362.062529][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 362.062529][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 362.062529][ T72] ipv6_find_idev+0x102/0x170 [ 362.062529][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 362.062529][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 362.062529][ T72] netlink_rcv_skb+0x130/0x360 [ 362.062529][ T72] netlink_unicast+0x449/0x710 [ 362.062529][ T72] netlink_sendmsg+0x723/0xbe0 [ 362.062529][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 362.062529][ T72] ___sys_sendmsg+0xee/0x170 [ 362.062529][ T72] __sys_sendmsg+0xcd/0x170 [ 362.062529][ T72] do_syscall_64+0xc6/0x1e0 [ 362.062529][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.062529][ T72] [ 362.064049][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 362.064049][ T72] neigh_parms_alloc+0x1e5/0x510 [ 362.064049][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 362.064049][ T72] ipv6_find_idev+0x102/0x170 [ 362.064049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 362.064049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 362.064049][ T72] netlink_rcv_skb+0x130/0x360 [ 362.064049][ T72] netlink_unicast+0x449/0x710 [ 362.064049][ T72] netlink_sendmsg+0x723/0xbe0 [ 362.064049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 362.064049][ T72] ___sys_sendmsg+0xee/0x170 [ 362.064049][ T72] __sys_sendmsg+0xcd/0x170 [ 362.064049][ T72] do_syscall_64+0xc6/0x1e0 [ 362.064049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.064049][ T72] [ 362.065707][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 362.065946][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 362.065946][ T72] dst_init+0x84/0x4a0 [ 362.065946][ T72] dst_alloc+0x97/0x150 [ 362.065946][ T72] ip6_dst_alloc+0x23/0x90 [ 362.065946][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 362.065946][ T72] ip6_pol_route+0x56f/0x840 [ 362.065946][ T72] fib6_rule_lookup+0x227/0x600 [ 362.065946][ T72] ip6_route_output_flags+0x251/0x460 [ 362.065946][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 362.065946][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 362.065946][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 362.065946][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 362.065946][ T72] ip6_datagram_connect+0x2c/0x50 [ 362.065946][ T72] __sys_connect+0x217/0x2a0 [ 362.065946][ T72] __x64_sys_connect+0x72/0xb0 [ 362.065946][ T72] do_syscall_64+0xc6/0x1e0 [ 362.065946][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 362.065946][ T72] [ 372.140608][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 372.141022][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 372.141022][ T72] netdev_get_by_index+0x5e/0x80 [ 372.141022][ T72] fib6_nh_init+0x3d8/0x15b0 [ 372.141022][ T72] ip6_route_info_create+0xf18/0x17d0 [ 372.141022][ T72] addrconf_f6i_alloc+0x244/0x410 [ 372.141022][ T72] ipv6_add_addr+0x411/0x2000 [ 372.141022][ T72] inet6_addr_add+0x30e/0xa40 [ 372.141022][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 372.141022][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 372.141022][ T72] netlink_rcv_skb+0x130/0x360 [ 372.141022][ T72] netlink_unicast+0x449/0x710 [ 372.141022][ T72] netlink_sendmsg+0x723/0xbe0 [ 372.141022][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 372.141022][ T72] ___sys_sendmsg+0xee/0x170 [ 372.141022][ T72] __sys_sendmsg+0xcd/0x170 [ 372.141022][ T72] do_syscall_64+0xc6/0x1e0 [ 372.141022][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.141022][ T72] [ 372.143019][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 372.143019][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 372.143019][ T72] ipv6_find_idev+0x102/0x170 [ 372.143019][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 372.143019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 372.143019][ T72] netlink_rcv_skb+0x130/0x360 [ 372.143019][ T72] netlink_unicast+0x449/0x710 [ 372.143019][ T72] netlink_sendmsg+0x723/0xbe0 [ 372.143019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 372.143019][ T72] ___sys_sendmsg+0xee/0x170 [ 372.143019][ T72] __sys_sendmsg+0xcd/0x170 [ 372.143019][ T72] do_syscall_64+0xc6/0x1e0 [ 372.143019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.143019][ T72] [ 372.144592][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 372.144592][ T72] neigh_parms_alloc+0x1e5/0x510 [ 372.144592][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 372.144592][ T72] ipv6_find_idev+0x102/0x170 [ 372.144592][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 372.144592][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 372.144592][ T72] netlink_rcv_skb+0x130/0x360 [ 372.144592][ T72] netlink_unicast+0x449/0x710 [ 372.144592][ T72] netlink_sendmsg+0x723/0xbe0 [ 372.144592][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 372.144592][ T72] ___sys_sendmsg+0xee/0x170 [ 372.144592][ T72] __sys_sendmsg+0xcd/0x170 [ 372.144592][ T72] do_syscall_64+0xc6/0x1e0 [ 372.144592][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.144592][ T72] [ 372.146264][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 372.146536][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 372.146536][ T72] netdev_get_by_index+0x5e/0x80 [ 372.146536][ T72] fib6_nh_init+0x3d8/0x15b0 [ 372.146536][ T72] ip6_route_info_create+0xf18/0x17d0 [ 372.146536][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 372.146536][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 372.146536][ T72] addrconf_join_anycast+0x1c0/0x220 [ 372.146536][ T72] dev_forward_change+0x2a6/0x7b0 [ 372.146536][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 372.146536][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 372.146536][ T72] proc_sys_call_handler+0x403/0x5e0 [ 372.146536][ T72] vfs_write+0x9e5/0x10a0 [ 372.146536][ T72] ksys_write+0xf5/0x1e0 [ 372.146536][ T72] do_syscall_64+0xc6/0x1e0 [ 372.146536][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.146536][ T72] [ 372.148369][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 372.148369][ T72] netdev_get_by_index+0x5e/0x80 [ 372.148369][ T72] fib6_nh_init+0x3d8/0x15b0 [ 372.148369][ T72] ip6_route_info_create+0xf18/0x17d0 [ 372.148369][ T72] addrconf_f6i_alloc+0x244/0x410 [ 372.148369][ T72] ipv6_add_addr+0x411/0x2000 [ 372.148369][ T72] inet6_addr_add+0x30e/0xa40 [ 372.148369][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 372.148369][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 372.148369][ T72] netlink_rcv_skb+0x130/0x360 [ 372.148369][ T72] netlink_unicast+0x449/0x710 [ 372.148369][ T72] netlink_sendmsg+0x723/0xbe0 [ 372.148369][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 372.148369][ T72] ___sys_sendmsg+0xee/0x170 [ 372.148369][ T72] __sys_sendmsg+0xcd/0x170 [ 372.148369][ T72] do_syscall_64+0xc6/0x1e0 [ 372.148369][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.148369][ T72] [ 372.150345][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 372.150345][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 372.150345][ T72] ipv6_find_idev+0x102/0x170 [ 372.150345][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 372.150345][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 372.150345][ T72] netlink_rcv_skb+0x130/0x360 [ 372.150345][ T72] netlink_unicast+0x449/0x710 [ 372.150345][ T72] netlink_sendmsg+0x723/0xbe0 [ 372.150345][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 372.150345][ T72] ___sys_sendmsg+0xee/0x170 [ 372.150345][ T72] __sys_sendmsg+0xcd/0x170 [ 372.150345][ T72] do_syscall_64+0xc6/0x1e0 [ 372.150345][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.150345][ T72] [ 372.151869][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 372.151869][ T72] neigh_parms_alloc+0x1e5/0x510 [ 372.151869][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 372.151869][ T72] ipv6_find_idev+0x102/0x170 [ 372.151869][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 372.151869][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 372.151869][ T72] netlink_rcv_skb+0x130/0x360 [ 372.151869][ T72] netlink_unicast+0x449/0x710 [ 372.151869][ T72] netlink_sendmsg+0x723/0xbe0 [ 372.151869][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 372.151869][ T72] ___sys_sendmsg+0xee/0x170 [ 372.151869][ T72] __sys_sendmsg+0xcd/0x170 [ 372.151869][ T72] do_syscall_64+0xc6/0x1e0 [ 372.151869][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.151869][ T72] [ 372.153538][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 372.153801][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 372.153801][ T72] dst_init+0x84/0x4a0 [ 372.153801][ T72] dst_alloc+0x97/0x150 [ 372.153801][ T72] ip6_dst_alloc+0x23/0x90 [ 372.153801][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 372.153801][ T72] ip6_pol_route+0x56f/0x840 [ 372.153801][ T72] fib6_rule_lookup+0x227/0x600 [ 372.153801][ T72] ip6_route_output_flags+0x251/0x460 [ 372.153801][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 372.153801][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 372.153801][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 372.153801][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 372.153801][ T72] ip6_datagram_connect+0x2c/0x50 [ 372.153801][ T72] __sys_connect+0x217/0x2a0 [ 372.153801][ T72] __x64_sys_connect+0x72/0xb0 [ 372.153801][ T72] do_syscall_64+0xc6/0x1e0 [ 372.153801][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 372.153801][ T72]