[ 1039.856688][ T10] unregister_netdevice: waiting for eth0 to become free. Usage count = 4 [ 1039.857023][ T10] ref_tracker: eth0@ffff8880081c15e0 has 1/3 users at [ 1039.857023][ T10] netdev_get_by_index+0x5e/0x80 [ 1039.857023][ T10] fib6_nh_init+0x3d8/0x1580 [ 1039.857023][ T10] ip6_route_info_create+0xf18/0x17d0 [ 1039.857023][ T10] addrconf_f6i_alloc+0x315/0x560 [ 1039.857023][ T10] ipv6_add_addr+0x411/0x2000 [ 1039.857023][ T10] inet6_addr_add+0x30e/0xa40 [ 1039.857023][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 1039.857023][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.857023][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.857023][ T10] netlink_unicast+0x449/0x710 [ 1039.857023][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.857023][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.857023][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.857023][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.857023][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.857023][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1039.857023][ T10] [ 1039.859189][ T10] ref_tracker: eth0@ffff8880081c15e0 has 1/3 users at [ 1039.859189][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 1039.859189][ T10] ipv6_find_idev+0x102/0x170 [ 1039.859189][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 1039.859189][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.859189][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.859189][ T10] netlink_unicast+0x449/0x710 [ 1039.859189][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.859189][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.859189][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.859189][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.859189][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.859189][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1039.859189][ T10] [ 1039.860809][ T10] ref_tracker: eth0@ffff8880081c15e0 has 1/3 users at [ 1039.860809][ T10] neigh_parms_alloc+0x1e5/0x510 [ 1039.860809][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 1039.860809][ T10] ipv6_find_idev+0x102/0x170 [ 1039.860809][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 1039.860809][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.860809][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.860809][ T10] netlink_unicast+0x449/0x710 [ 1039.860809][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.860809][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.860809][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.860809][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.860809][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.860809][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1039.860809][ T10] [ 1039.862606][ T10] unregister_netdevice: waiting for eth0 to become free. Usage count = 7 [ 1039.862895][ T10] ref_tracker: r1h1@ffff888008b845e0 has 1/6 users at [ 1039.862895][ T10] netdev_get_by_index+0x5e/0x80 [ 1039.862895][ T10] fib6_nh_init+0x3d8/0x1580 [ 1039.862895][ T10] ip6_route_info_create+0xf18/0x17d0 [ 1039.862895][ T10] addrconf_f6i_alloc+0x265/0x560 [ 1039.862895][ T10] __ipv6_dev_ac_inc+0x25f/0xb10 [ 1039.862895][ T10] addrconf_join_anycast+0x1c0/0x220 [ 1039.862895][ T10] __ipv6_ifa_notify+0x6b3/0xaf0 [ 1039.862895][ T10] addrconf_dad_completed+0x12b/0xe20 [ 1039.862895][ T10] addrconf_dad_begin+0x310/0x670 [ 1039.862895][ T10] addrconf_dad_work+0x10b/0xab0 [ 1039.862895][ T10] process_one_work+0x84d/0x18a0 [ 1039.862895][ T10] worker_thread+0x587/0xd30 [ 1039.862895][ T10] kthread+0x28a/0x350 [ 1039.862895][ T10] ret_from_fork+0x31/0x70 [ 1039.862895][ T10] ret_from_fork_asm+0x1a/0x30 [ 1039.862895][ T10] [ 1039.864926][ T10] ref_tracker: r1h1@ffff888008b845e0 has 1/6 users at [ 1039.864926][ T10] netdev_get_by_index+0x5e/0x80 [ 1039.864926][ T10] fib6_nh_init+0x3d8/0x1580 [ 1039.864926][ T10] ip6_route_info_create+0xf18/0x17d0 [ 1039.864926][ T10] ip6_route_add+0x1c/0x140 [ 1039.864926][ T10] addrconf_prefix_route+0x2a6/0x430 [ 1039.864926][ T10] inet6_addr_add+0x4f8/0xa40 [ 1039.864926][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 1039.864926][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.864926][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.864926][ T10] netlink_unicast+0x449/0x710 [ 1039.864926][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.864926][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.864926][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.864926][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.864926][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.864926][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1039.864926][ T10] [ 1039.867050][ T10] ref_tracker: r1h1@ffff888008b845e0 has 1/6 users at [ 1039.867050][ T10] netdev_get_by_index+0x5e/0x80 [ 1039.867050][ T10] fib6_nh_init+0x3d8/0x1580 [ 1039.867050][ T10] ip6_route_info_create+0xf18/0x17d0 [ 1039.867050][ T10] addrconf_f6i_alloc+0x315/0x560 [ 1039.867050][ T10] ipv6_add_addr+0x411/0x2000 [ 1039.867050][ T10] inet6_addr_add+0x30e/0xa40 [ 1039.867050][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 1039.867050][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.867050][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.867050][ T10] netlink_unicast+0x449/0x710 [ 1039.867050][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.867050][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.867050][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.867050][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.867050][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.867050][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1039.867050][ T10] [ 1039.869114][ T10] ref_tracker: r1h1@ffff888008b845e0 has 1/6 users at [ 1039.869114][ T10] netdev_get_by_index+0x5e/0x80 [ 1039.869114][ T10] fib6_nh_init+0x3d8/0x1580 [ 1039.869114][ T10] ip6_route_info_create+0xf18/0x17d0 [ 1039.869114][ T10] ip6_route_add+0x1c/0x140 [ 1039.869114][ T10] addrconf_add_mroute+0x1ac/0x2c0 [ 1039.869114][ T10] addrconf_add_dev+0xe2/0x170 [ 1039.869114][ T10] inet6_addr_add+0x12f/0xa40 [ 1039.869114][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 1039.869114][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.869114][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.869114][ T10] netlink_unicast+0x449/0x710 [ 1039.869114][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.869114][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.869114][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.869114][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.869114][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.869114][ T10] [ 1039.871131][ T10] ref_tracker: r1h1@ffff888008b845e0 has 1/6 users at [ 1039.871131][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 1039.871131][ T10] ipv6_find_idev+0x102/0x170 [ 1039.871131][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 1039.871131][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.871131][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.871131][ T10] netlink_unicast+0x449/0x710 [ 1039.871131][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.871131][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.871131][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.871131][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.871131][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.871131][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1039.871131][ T10] [ 1039.872760][ T10] ref_tracker: r1h1@ffff888008b845e0 has 1/6 users at [ 1039.872760][ T10] neigh_parms_alloc+0x1e5/0x510 [ 1039.872760][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 1039.872760][ T10] ipv6_find_idev+0x102/0x170 [ 1039.872760][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 1039.872760][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1039.872760][ T10] netlink_rcv_skb+0x130/0x360 [ 1039.872760][ T10] netlink_unicast+0x449/0x710 [ 1039.872760][ T10] netlink_sendmsg+0x723/0xbe0 [ 1039.872760][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 1039.872760][ T10] ___sys_sendmsg+0xee/0x170 [ 1039.872760][ T10] __sys_sendmsg+0xcd/0x170 [ 1039.872760][ T10] do_syscall_64+0xc6/0x1e0 [ 1039.872760][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1039.872760][ T10]